Automotive Maintenance Merit Badge

Free Resources and Answers

Time: 2–4 weeks
Difficulty: Moderate
Setting: Indoor garage, workshop
Best For: Scouts interested in cars, mechanics, hands-on work
Hands-On Level: High
Eagle Required: No

The Automotive Maintenance merit badge helps you learn how to take care of a vehicle. You practice useful skills like checking fluids, changing tires, and doing simple maintenance. You also learn how different parts of a car work together to keep it running safely.

As you work on the Automotive Maintenance merit badge, you gain confidence by doing real hands-on tasks. You learn skills which can help you save time and money. You also learn how regular maintenance can prevent problems before they become serious.

This merit badge helps you become more responsible and prepared for the future. You learn how to use tools safely and how to care for equipment properly. The knowledge you gain now can help you when you start driving and owning a vehicle someday.

The requirements for the Automotive Maintenance merit badge were updated on January 1, 2026.

Automotive Maintenance Merit Badge Requirements

Automotive Maintenance Merit Badge Pamphlet

Automotive Maintenance Merit Badge Check Off Sheet

Checklist for All Merit Badges

Help with Answers for Automotive Maintenance Merit Badge Requirements

Find specific helps for some of the Automotive Maintenance Merit Badge requirements listed below. Some of these resources will just give the answers. Others will provide engaging ways for older Scouts to introduce these concepts to new Scouts.

• Requirement 1: Safety and Registration
• Requirement 2: General Maintenance
• Requirement 3: Dashboard
• Requirement 4: Tires
• Requirement 5: Engine
• Requirement 6: Cooing System
• Requirement 7: Fuel System
• Requirement 8: Ignition and Electrical Systems
• Requirement 9: Drive Train
• Requirement 10: Brake System
• Requirement 11: Car Care
• Requirement 12: Careers

Requirement 1a: Automotive Maintenance Hazards

What You Need To Do

Learn about common hazards during automotive maintenance. Talk about ways to prevent injuries and stay safe while working on vehicles.

Helpful Tips

• Let the engine cool before touching engine parts.
• Wear gloves to protect your hands.
• Use safety glasses when working near chemicals or tools.
• Clean up oil and fluid spills right away.
• Keep long hair and loose clothing away from moving parts.
• Use the correct tool for each job.
• Work in a well-lit area.
• Ask an adult for help with dangerous tasks.

Resources

• Automotive Repair Safety Observations (video)

Leader Tips

• Show Scouts where common hazards are found.
• Demonstrate safe tool use before activities.
• Remind Scouts to wear safety gear.
• Watch closely during hands-on work.

Requirement 1b: Safety Equipment and Clothing

What You Need To Do

Learn about safety gear, tools, and clothing used for automotive work. Use the proper equipment while working on vehicles.

Helpful Tips

• Wear safety goggles to protect your eyes.
• Use gloves to avoid cuts and burns.
• Wear closed-toe shoes in the garage.
• Avoid loose sleeves and jewelry.
• Check tools for damage before using them.
• Keep tools organized while working.
• Use jack stands when lifting a vehicle.
• Put tools away after finishing the job.

Resources

• Garage and Shop Safety Basics (video)

Leader Tips

• Have safety gear ready before starting.
• Demonstrate how to use tools correctly.
• Encourage Scouts to work slowly and carefully.
• Stop unsafe behavior right away.

Requirement 1c: Types of Motors

What You Need To Do

Learn about different types of motors used in vehicles. Be able to describe how they are different.

Helpful Tips

• Learn the basics of gasoline engines.
• Look at pictures of diesel engines.
• Compare electric motors and gas engines.
• Learn what hybrid vehicles use for power.
• Find the starter motor on a vehicle.
• Ask questions about unfamiliar motors.
• Watch how motors connect to other vehicle systems.
• Use simple diagrams to help you remember parts.

Resources

• Difference Between Diesel and Gas Engines (video)
• Different Types of Motors in Electric Vehicles (video)
• Different Types of Hybrid Engines (video)
• How Do Hydrogen Cars Work (video)

Leader Tips

• Use real vehicles when possible.
• Keep explanations short and simple.
• Let Scouts point out parts on a car.
• Compare different vehicle types side by side.

Requirement 1d: High-Voltage Vehicle Safety

What You Need To Do

Learn the safety rules for vehicles with high-voltage electrical systems. Find out how electric and hybrid vehicles can be dangerous during repairs.

Helpful Tips

• Turn the vehicle off before working on it.
• Stay away from orange high-voltage cables.
• Wear insulated gloves when needed.
• Use insulated tools around electrical systems.
• Follow instructions from the owner’s manual.
• Never cut electrical cables.
• Ask trained adults for help with high-voltage systems.
• Treat electric vehicle systems with caution.

Resources

• Working on High Voltage Vehicles (video)

Leader Tips

• Review electrical safety before activities.
• Point out high-voltage warning labels.
• Keep Scouts from touching dangerous parts.
• Use videos or diagrams if no hybrid vehicle is available.

Requirement 1e: Vehicle Maintenance Chart

What You Need To Do

Review the maintenance chart in a vehicle owner’s manual. Learn when different maintenance tasks should be completed.

Helpful Tips

• Find the maintenance section in the manual.
• Look for mileage and time intervals.
• Check when oil changes are needed.
• Find tire rotation schedules.
• Look for brake inspection information.
• Write down common maintenance tasks.
• Compare older and newer maintenance schedules.
• Ask family members about vehicle maintenance routines.

Resources

• Should I Follow the Manufacturer’s Maintenance Schedule (video)

Leader Tips

• Bring several owner’s manuals to meetings.
• Help Scouts read maintenance charts.
• Point out common maintenance intervals.
• Connect the chart to real vehicle care.

Requirement 1f: Safety Belts and Passive Restraints

What You Need To Do

Learn how safety belts and passive restraints protect passengers. Find out their limits during accidents.

Helpful Tips

• Wear your seat belt every time you ride.
• Make sure the belt fits correctly.
• Learn how airbags help during crashes.
• Sit properly in the seat.
• Keep feet off the dashboard.
• Read about child safety seat rules.
• Check seat belts for damage.
• Learn why airbags do not replace seat belts.

Resources

• Seatbelt | How Does it Work? (video)
• Seatbelts (website)
• On Air Bags (website)

Leader Tips

• Demonstrate proper seat belt positioning.
• Discuss common safety mistakes in vehicles.
• Encourage Scouts to practice safe habits daily.
• Use simple examples from everyday driving.

Requirement 1g: Emissions and Safety Inspections

What You Need To Do

Find out your state’s rules for emissions and safety inspections. Learn how often vehicles must be inspected.

Helpful Tips

• Ask family members about inspection stickers.
• Look for inspection dates on vehicles.
• Learn what emissions testing checks.
• Learn what safety inspections include.
• Find out how often inspections happen in your state.
• Ask where inspections are performed locally.
• Learn why inspections help drivers stay safe.
• Compare rules in nearby states if possible.

Resources

• Tips on How to Pass State Inspection (video)

Leader Tips

• Help Scouts find local inspection information.
• Show examples of inspection stickers.
• Discuss how inspections improve safety.
• Keep examples connected to local laws.

Requirement 1h: Vehicle Registration

What You Need To Do

Learn why vehicles must be registered with the state. Find out the renewal fee for your family vehicle.

Helpful Tips

• Ask where the registration card is kept.
• Look at the expiration date on the registration.
• Learn why registration is required by law.
• Find out how often registration is renewed.
• Ask how renewal payments are made.
• Learn what information is listed on the registration.
• Compare registration fees for different vehicles.
• Learn what can happen if registration expires.

Resources

• Vehicle Registration Near Me (video)

Leader Tips

• Show Scouts a sample registration form if possible.
• Help Scouts connect registration to responsible ownership.
• Encourage Scouts to ask questions at home.
• Keep discussions focused on practical information.

Requirement 2a: Checking Vehicle Fluids

What You Need To Do

Learn how to check important vehicle fluids. Practice checking fluid levels safely and adding fluid when needed.

Helpful Tips

• Park the vehicle on level ground before checking fluids.
• Let the engine cool before opening coolant containers.
• Wipe the oil dipstick clean before checking the level.
• Use the correct type of fluid for each system.
• Check brake fluid at the marked fill lines.
• Keep dirt out of fluid reservoirs.
• Reinstall caps and dipsticks securely.
• Clean spills right away.

Resources

• Your Car’s Fluids (video)
• How to Care for Your Automotive Battery (video)
• How to Check & Properly Fill Water Levels in a Car Battery (video)

Leader Tips

• Demonstrate each fluid check slowly.
• Remind Scouts about hot engine parts.
• Let Scouts practice using dipsticks and reservoirs.
• Review the correct fluid types for the vehicle.

Requirement 2b: Checking Battery Condition and Fuses

What You Need To Do

Check the battery condition and inspect battery terminals. Locate fuse boxes and practice replacing a blown fuse.

Helpful Tips

• Look for corrosion on battery terminals.
• Keep metal tools away from battery posts.
• Wear eye protection near batteries.
• Find fuse boxes in the engine area and inside the vehicle.
• Match replacement fuses to the correct size and type.
• Use a fuse puller if available.
• Replace only one fuse at a time.
• Check the owner’s manual for fuse locations.

Resources

• How to Check Car Fuses (video)

Leader Tips

• Show Scouts common signs of battery corrosion.
• Demonstrate safe fuse replacement.
• Keep extra fuses available for practice.
• Supervise closely around batteries.

Requirement 2c: Belts and Hoses

What You Need To Do

Inspect belts and hoses for wear and damage. Learn how to check belt tension and hose condition.

Helpful Tips

• Look for cracks or fraying on belts.
• Check hoses for leaks or soft spots.
• Press belts gently to check tension.
• Inspect hose connections for looseness.
• Keep hands away from moving engine parts.
• Check belts with the engine turned off.
• Use a flashlight to see hard-to-reach areas.
• Compare worn parts with newer ones if possible.

Resources

• How to Inspect Belts (video)
• How to Check Serpentine Belt (video)
• How to Inspect Hoses (video)

Leader Tips

• Point out common wear areas on belts and hoses.
• Demonstrate proper inspection methods.
• Keep engines off during inspections.
• Encourage careful observation during checks.

Requirement 2d: Vehicle Lights

What You Need To Do

Check the operation of the vehicle’s lights inside and outside the car. Make sure bulbs and warning lights work properly.

Helpful Tips

• Test headlights on both high and low beams.
• Check brake lights with help from another person.
• Turn on hazard lights and signal lights.
• Test interior dome lights.
• Check dashboard instrument lights.
• Look for burned-out bulbs.
• Clean dirty light covers.
• Replace bulbs with the correct type.

Resources

• How to Check Car Lights (video)
• Basics of Automotive Lighting Systems (video)

Leader Tips

• Pair Scouts so they can help each other test lights.
• Demonstrate how to check brake lights safely.
• Explain common warning light symbols.
• Encourage Scouts to work through a checklist.

Requirement 2e: Air Filters

What You Need To Do

Locate the vehicle’s air filter or filters. Check the filters for dirt and replace them if needed.

Helpful Tips

• Use the owner’s manual to find the air filter.
• Open the filter housing carefully.
• Hold the filter up to the light to check for dirt.
• Replace filters that look clogged.
• Keep dirt from falling into the air intake.
• Reinstall the filter in the correct direction.
• Secure the housing after inspection.
• Compare a dirty filter to a clean one if possible.

Resources

• Check and Change Air Filter (video)

Leader Tips

• Show Scouts where filters are commonly located.
• Demonstrate how to open filter housings safely.
• Let Scouts inspect both clean and dirty filters.
• Remind Scouts to reassemble parts correctly.

Requirement 3a: Dashboard Gauges

What You Need To Do

Learn the purpose of the main dashboard gauges. Be able to point out each gauge on the instrument cluster.

Helpful Tips

• Find the fuel gauge on the dashboard.
• Watch how the speedometer changes while driving.
• Locate the tachometer and look at the RPM numbers.
• Learn what normal engine temperature looks like.
• Find the oil pressure gauge or warning light.
• Use the owner’s manual to identify gauges.
• Compare gauges in different vehicles if possible.
• Practice pointing out each gauge quickly.

Resources

• Understanding the Car Gauges (video)

Leader Tips

• Sit in the vehicle with Scouts during the lesson.
• Point to each gauge while explaining its purpose.
• Use the owner’s manual for different vehicle layouts.
• Keep explanations connected to real driving situations.

Requirement 3b: Dashboard Warning Symbols

What You Need To Do

Learn the meaning of dashboard warning symbols. Understand the difference between yellow warnings and red warnings.

Helpful Tips

• Look through the owner’s manual for dashboard symbols.
• Learn common warning lights like check engine and battery.
• Treat red warning lights as urgent problems.
• Treat yellow lights as warnings needing attention soon.
• Find the brake warning light on the dashboard.
• Learn what the ABS warning light means.
• Check what airbag warning symbols look like.
• Practice matching symbols to their meanings.

Resources

• Dashboard Warning Lights Explained (video)

Leader Tips

• Show Scouts pictures of common dashboard symbols.
• Compare yellow and red warning lights clearly.
• Use real vehicles if possible.
• Encourage Scouts to use the owner’s manual often.

Requirement 3c: Dashboard Messages and Alerts

What You Need To Do

Learn about dashboard messages and alerts. Review common maintenance reminders and driver information messages.

Helpful Tips

• Look for maintenance reminder messages.
• Learn what low tire pressure alerts mean.
• Check how door ajar warnings appear.
• Read messages carefully before driving.
• Learn how service reminders help vehicle care.
• Use the owner’s manual to understand alerts.
• Watch for warning messages during vehicle startup.
• Ask about alerts you do not recognize.

Leader Tips

• Demonstrate dashboard alerts in a vehicle if possible.
• Explain how reminders help prevent vehicle problems.
• Encourage Scouts to read messages fully.
• Keep examples simple and practical.

Requirement 4a: Tire Specifications

What You Need To Do

Learn the difference between tire manufacturer specifications and vehicle manufacturer specifications. Find where this information is located on a vehicle and tire.

Helpful Tips

• Look at the tire sidewall for tire information.
• Find the recommended tire pressure on the driver’s door sticker.
• Compare tire sizes from the tire and owner’s manual.
• Learn what load ratings mean.
• Check the maximum tire pressure on the tire sidewall.
• Use the owner’s manual for vehicle recommendations.
• Compare information from different vehicles if possible.
• Practice reading tire markings carefully.

Resources

• How to Read aTire (video)

Leader Tips

• Show Scouts real examples on a vehicle.
• Point out the difference between tire and vehicle information.
• Help Scouts read tire sidewall markings.
• Use simple explanations for tire terms.

Requirement 4b: Checking Tire Pressure

What You Need To Do

Learn how to check tire pressure and inflate tires properly. Check the spare tire to make sure it is ready to use.

Helpful Tips

• Use a tire pressure gauge on cold tires.
• Remove the valve cap before checking pressure.
• Compare the reading to the recommended pressure.
• Add air slowly to avoid overinflating the tire.
• Recheck pressure after adding air.
• Replace the valve cap after checking.
• Check all four tires and the spare tire.
• Keep a tire gauge in the vehicle.

Resources

• How to Properly Check and Fill Tires (video)

Leader Tips

• Demonstrate how to use a tire gauge.
• Let Scouts practice adding air safely.
• Remind Scouts to use vehicle pressure recommendations.
• Include the spare tire during inspections.

Requirement 4c: Wheel Alignment

What You Need To Do

Learn why wheel alignment is important. Be able to describe caster, camber, and toe-in adjustments.

Helpful Tips

• Look for uneven tire wear patterns.
• Learn how alignment affects steering.
• Study simple diagrams of caster and camber.
• Learn how toe-in affects tire direction.
• Ask how poor alignment damages tires.
• Watch how alignment improves vehicle handling.
• Learn common signs of alignment problems.
• Connect alignment to tire life and safety.

Resources

Understanding Wheel Alignment Process (video)

Leader Tips

• Use pictures or diagrams during explanations.
• Show examples of uneven tire wear.
• Keep alignment terms simple and practical.
• Relate alignment to everyday driving.

Requirement 4d: Lateral-Wear Bar Indicator

What You Need To Do

Learn the purpose of the lateral-wear bar indicator. Find out how it shows when a tire should be replaced.

Helpful Tips

• Look inside the tire tread grooves for wear bars.
• Compare tread depth to the wear bars.
• Learn why low tread can be dangerous.
• Check tires regularly for wear.
• Use a flashlight to inspect tread grooves.
• Compare worn tires with newer tires.
• Learn how tread helps with traction in rain.
• Replace tires before tread becomes unsafe.

Resources

• What is a TIre Wear Indicator Bar? (video)
• Knowing When to Replace Your Tires (video)

Leader Tips

• Show Scouts real wear bars on tires if possible.
• Explain how tread affects stopping distance.
• Compare safe and worn tires side by side.
• Encourage regular tire inspections.

Requirement 4e: Disposing of Old Tires

What You Need To Do

Learn how old tires should be disposed of according to local laws and regulations.

Helpful Tips

• Ask where old tires can be recycled locally.
• Learn why tires should not be dumped illegally.
• Find out if tire stores accept used tires.
• Learn how recycling centers handle old tires.
• Ask about local disposal fees if any.
• Learn how old tires can harm the environment.
• Watch for community tire recycling events.
• Follow local rules for tire disposal.

Resources

• Tires: How Do I Get Rid Of Them? (video)

Leader Tips

• Help Scouts find local recycling information.
• Discuss environmental problems caused by illegal dumping.
• Encourage Scouts to ask questions at tire shops.
• Keep examples connected to local communities.

Requirement 5a: Internal Combustion Engines

What You Need To Do

Learn how an internal combustion engine creates power. Compare gasoline engines, diesel engines, and gasoline-electric hybrid vehicles.

Helpful Tips

• Learn the basic four-stroke engine cycle.
• Find out how spark plugs work in gasoline engines.
• Learn how diesel engines use compression to ignite fuel.
• Compare gasoline and diesel fuel systems.
• Learn how hybrid vehicles use both gas and electricity.
• Watch how the electric motor helps a hybrid vehicle.
• Look at diagrams of engine parts.
• Practice explaining engine differences in simple words.

Resources

• Engines 101: Basics of How Engines Work (video)
• Engines 101: How Does a Diesel Engine Work (video)
• How Hybrid Cars Work (video)

Leader Tips

• Use simple diagrams to explain engine operation.
• Compare gasoline and diesel engines side by side.
• Keep explanations focused on basic functions.
• Use hybrid vehicle examples if available.

Requirement 5b: Engine Oil

What You Need To Do

Learn the purpose of engine oil. Be able to explain API service codes, SAE numbers, and viscosity ratings.

Helpful Tips

• Learn how oil reduces friction in the engine.
• Look for API service codes on oil containers.
• Find the SAE number on motor oil bottles.
• Learn what numbers like 5W-30 mean.
• Compare thinner and thicker oil ratings.
• Learn how oil helps cool engine parts.
• Check oil containers at a store or garage.
• Ask why different vehicles use different oils.

Resources

• API Motor Oil Ratings Explained (video)
• What Do SAE Grades Mean (video)

Leader Tips

• Show Scouts real oil containers.
• Explain oil ratings using simple examples.
• Connect oil care to engine life.
• Encourage Scouts to read labels carefully.

Requirement 5c: Recommended Oil Type and Amount

What You Need To Do

Find the recommended oil type and oil capacity for a vehicle engine. Use the owner’s manual or labels under the hood.

Helpful Tips

• Look in the owner’s manual for oil information.
• Check under the hood for oil labels.
• Write down the correct oil type.
• Find the total oil capacity for the engine.
• Compare oil recommendations for different vehicles.
• Learn why the correct oil type matters.
• Ask how often oil should be changed.
• Keep the owner’s manual in the vehicle.

Resources

• Choosing the Correct Engine Oil (video)

Leader Tips

• Help Scouts locate oil information quickly.
• Compare information from several vehicles if possible.
• Explain why wrong oil can damage engines.
• Encourage Scouts to use the owner’s manual often.

Requirement 6a: Coolant and Cooling Systems

What You Need To Do

Learn why coolant is important in a vehicle’s cooling system. Find out how to choose the correct coolant type for a vehicle.

Helpful Tips

• Learn how coolant helps prevent overheating.
• Find out how coolant protects against freezing.
• Check the owner’s manual for the correct coolant type.
• Compare coolant colors used in different vehicles.
• Learn why mixing coolant types can cause problems.
• Check coolant levels only when the engine is cool.
• Locate the radiator and coolant reservoir.
• Learn common signs of cooling system problems.

Resources

• Role of Antifreeze/Coolant (video)

Leader Tips

• Show Scouts where coolant information is listed.
• Explain the dangers of opening a hot radiator.
• Compare several coolant types if possible.
• Keep safety rules part of the discussion.

Requirement 6b: Flushing and Changing Coolant

What You Need To Do

Learn the basic steps for flushing and changing engine coolant. Find out how to dispose of used coolant safely.

Helpful Tips

• Let the engine cool completely before starting.
• Place a drain pan under the radiator.
• Open the drain plug carefully.
• Use distilled water when flushing the system.
• Refill with the correct coolant mixture.
• Check for leaks after refilling.
• Store used coolant in a sealed container.
• Take used coolant to a recycling or disposal center.

Resources

• Flushing and Filling Your Coolant System (video)

Leader Tips

• Demonstrate coolant changes in a safe area.
• Supervise closely around hot engine parts.
• Review safe handling of used coolant.
• Remind Scouts to clean spills immediately.

Requirement 7a: Air and Fuel Systems

What You Need To Do

Learn how the air and fuel systems work together in an engine. Find out why air filters and fuel filters are important.

Helpful Tips

• The engine mixes air and fuel together to create combustion.
• The air filter keeps dirt, dust, and bugs from entering the engine.
• A dirty air filter can reduce engine power and fuel economy.
• The fuel filter removes rust, dirt, and debris from the fuel before it reaches the engine.
• A clogged fuel filter can make the engine run poorly or stall.
• Check the owner’s manual to find filter locations.
• Replace filters with the correct type for the vehicle.
• Inspect filters regularly during maintenance checks.

Resources

• How Air Filter Works (video)
• Animation Fuel Filter (video)

Leader Tips

• Show Scouts dirty and clean filters side by side.
• Demonstrate where filters are located on a vehicle.
• Explain how blocked filters affect engine performance.
• Let Scouts practice removing and inspecting filters.

Requirement 7b: Fuel Injection Systems

What You Need To Do

Learn how a fuel injection system works. Find out how the onboard computer controls fuel delivery.

Helpful Tips

• Fuel injectors spray small amounts of fuel into the engine cylinders.
• The onboard computer checks sensor information many times each second.
• The oxygen sensor helps the computer adjust the fuel mixture.
• The throttle position sensor tracks how far the accelerator pedal is pressed.
• Fuel injection systems help engines start more easily and run smoothly.
• The computer changes fuel delivery during acceleration and idling.
• Modern fuel injection systems improve fuel economy and reduce pollution.
• Warning lights may come on if a sensor or injector has a problem.

Resources

• How a Car Fuel Injection System Works Explained Step-by-Step! (video)

Leader Tips

• Use diagrams to show how fuel moves through the system.
• Point out common sensors under the hood.
• Relate fuel injection to smoother engine operation.
• Keep explanations connected to real driving situations.

Requirement 8a: Electrical Systems

What You Need To Do

Learn the parts of a vehicle electrical system. Be able to explain how the parts work together.

Helpful Tips

• The battery stores electrical power for starting the vehicle.
• The starter motor turns the engine so it can begin running.
• The alternator recharges the battery while the engine runs.
• The voltage regulator keeps the electrical system from getting too much voltage.
• Wiring carries electricity between different vehicle systems.
• Fuses protect electrical parts from damage caused by too much current.
• Lighting systems use switches, bulbs, and wiring to operate safely.
• Hybrid and electric vehicles use inverters to change battery power into power for the motor.

Resources

• Car Electrical System Explained (video)
• Automotive Starting and Charging System (video)
• The Role of Inverters for EV Propulsion Systems (video)
• Automotive Lighting Circuits (video)

Leader Tips

• Use diagrams to show how electricity moves through the system.
• Point out electrical parts under the hood.
• Compare gasoline and electric vehicle systems.
• Keep explanations connected to real vehicle operation.

Requirement 8b: Engine Firing Order

What You Need To Do

Learn what engine firing order means and why it is important for engine operation.

Helpful Tips

• The firing order is the sequence in which spark plugs fire.
• Proper firing order helps the engine run smoothly.
• Incorrect firing order can cause shaking and poor performance.
• Engines are designed with specific firing orders for balance.
• Spark plugs ignite the fuel mixture inside each cylinder.
• Firing order information is often found in repair manuals.
• Different engines can use different firing orders.
• Engine timing works together with firing order.

Resources

• Explain Engine Firing Order | Automobile Engineering (video)

Leader Tips

• Use simple engine diagrams during explanations.
• Explain firing order with numbered cylinders.
• Keep the discussion focused on smooth engine operation.
• Relate firing order to engine balance and performance.

Requirement 8c: Spark Gap

What You Need To Do

Learn the purpose of the spark gap on a spark plug. Find out how the spark gap affects engine performance.

Helpful Tips

• The spark gap is the space between two parts of the spark plug.
• Electricity jumps across the gap to ignite the fuel mixture.
• A spark gap that is too small can weaken combustion.
• A spark gap that is too large can cause engine misfires.
• Proper spark gap helps engines run smoothly.
• Spark plug gap measurements are usually very small.
• Mechanics use special tools to measure spark gaps.
• Vehicle manuals list the correct spark gap size.

Resources

• What You Need to Know About Spark Plugs (video)

Leader Tips

• Show Scouts real spark plugs if possible.
• Demonstrate spark gap measuring tools.
• Explain how spark plugs affect combustion.
• Keep examples simple and practical.

Requirement 8d: Jumper Cables

What You Need To Do

Learn how to safely connect jumper cables to a vehicle battery.

Helpful Tips

• Park vehicles so the batteries are close but not touching.
• Connect the red cable to the positive terminal on the dead battery first.
• Connect the other red clamp to the good battery positive terminal.
• Connect the black cable to the negative terminal on the good battery.
• Attach the final black clamp to unpainted metal on the disabled vehicle.
• Keep clamps away from moving engine parts.
• Start the working vehicle before trying to start the disabled vehicle.
• Remove the cables in reverse order after the vehicle starts.

Resources

• How to Properly Jump Start a Car (video)
• How to Jump Start a Dead Battery (website)

Leader Tips

• Demonstrate jumper cable steps slowly.
• Stress battery safety during the activity.
• Watch Scouts closely during practice.
• Explain why the final black clamp is not attached to the dead battery.

Requirement 8e: Electric Vehicle Range and Charging

What You Need To Do

Learn what affects the driving range of electric and plug-in hybrid vehicles. Learn how these vehicles are recharged.

Helpful Tips

• Cold weather can reduce battery performance and driving range.
• High speeds use battery power more quickly.
• Hills and steep roads increase energy use.
• Heating and air conditioning can lower driving range.
• Plug-in vehicles recharge by connecting to a charging station or outlet.
• Charging times depend on the charger type and battery size.
• Fast chargers work more quickly than standard home chargers.
• Follow manufacturer instructions during charging for safety.

Resources

• Factors Affecting Range (video)

Leader Tips

• Discuss common situations that affect driving range.
• Compare home charging and public charging stations.
• Explain safe charging practices.
• Use local charging stations as examples if possible.

Requirement 8f: Systems Dependent on Electricity

What You Need To Do

Learn which vehicle systems depend on a reliable electrical system.

Helpful Tips

• Headlights and brake lights need electrical power to work.
• The radio and navigation system use electricity.
• Power windows and door locks depend on the electrical system.
• Airbags rely on electrical connections and sensors.
• Anti-lock braking systems use electrical controls.
• Heating and air conditioning systems use electrical parts.
• Dashboard gauges and warning lights depend on electricity.
• Weak batteries can affect many vehicle systems at once.

Resources

• Fundamentals of Automotive Electrical Systems (video)

Leader Tips

• Point out electrical systems throughout the vehicle.
• Explain how modern vehicles depend heavily on electricity.
• Connect electrical failures to real driving problems.
• Encourage Scouts to think about safety systems first.

Requirement 9a: Drive Train Parts

What You Need To Do

Learn the main parts of the drive train. Be able to explain how power moves from the engine to the wheels.

Helpful Tips

• The transmission changes engine power into usable wheel speed.
• The driveshaft carries power from the transmission to the differential.
• The differential allows wheels to turn at different speeds during turns.
• Axles connect the differential to the wheels.
• The drive train helps move the vehicle forward and backward.
• Some vehicles use more drive train parts than others.
• Four-wheel drive vehicles include extra components like a transfer case.
• Use diagrams to follow the path of power through the vehicle.

Resources

• Ultimate Drive Train Guide (video)

Leader Tips

• Use simple diagrams to explain power flow.
• Point out drive train parts under a vehicle if possible.
• Relate drive train parts to vehicle movement.
• Keep explanations practical and easy to follow.

Requirement 9b: Automatic and Standard Transmissions

What You Need To Do

Learn the difference between automatic and standard transmissions. Compare how each type changes gears.

Helpful Tips

• Automatic transmissions shift gears without driver input.
• Standard transmissions require the driver to use a clutch pedal.
• Manual shifting gives the driver more control over engine speed.
• Automatic transmissions are common in many passenger vehicles.
• Standard transmissions use a gear stick to select gears.
• Improper clutch use can wear out transmission parts.
• Automatic transmissions use fluid pressure to change gears.
• Learn the basic gear patterns in a manual transmission.

Resources

• Manual vs Automatic (video)

Leader Tips

• Show Scouts both transmission types if possible.
• Demonstrate how the clutch works in a manual vehicle.
• Explain the advantages of each system.
• Keep comparisons connected to everyday driving.

Requirement 9c: Automatic Transmission Fluid

What You Need To Do

Learn about the types of automatic transmission fluid and why the correct fluid matters.

Helpful Tips

• Automatic transmission fluid lubricates moving parts inside the transmission.
• Transmission fluid also helps cool the transmission.
• Different vehicles require different fluid types.
• Common fluid types include Dexron and Mercon.
• Using the wrong fluid can damage the transmission.
• Check the owner’s manual for the correct fluid type.
• Transmission fluid should stay clean and at the proper level.
• Dark or burned-smelling fluid can be a sign of problems.

Resources

• The Complexities of Today’s Automatic Transmission Fluid (video)

Leader Tips

• Show Scouts examples of transmission fluid containers.
• Explain why fluid types are not interchangeable.
• Demonstrate where transmission fluid is checked if possible.
• Discuss common signs of transmission trouble.

Requirement 9d: Lubricants for Drive Train Parts

What You Need To Do

Learn what lubricants are used in standard transmissions, differentials, and transfer cases.

Helpful Tips

• Manual transmissions often use thick gear oil for lubrication.
• Gear oil protects gears from friction and wear.
• Differentials use lubricants to protect moving gears during turns.
• Transfer cases send power to front and rear wheels in four-wheel drive vehicles.
• Some transfer cases use special transfer case fluid instead of gear oil.
• Lubricants help reduce heat inside drive train parts.
• Low lubricant levels can damage gears and bearings.
• Vehicle manuals list the correct lubricant type for each part.

Resources

• Which Fluids to Use (video)

Leader Tips

• Compare different lubricant containers during the lesson.
• Explain why gear oil is thicker than engine oil.
• Point out drive train components under a vehicle.
• Connect proper lubrication to longer equipment life.

Requirement 9e: Front-Wheel, Rear-Wheel, and Four-Wheel Drive

What You Need To Do

Learn the differences between front-wheel drive, rear-wheel drive, and four-wheel drive vehicles.

Helpful Tips

• Front-wheel drive vehicles send power to the front wheels.
• Front-wheel drive often provides good traction in rain and snow.
• Rear-wheel drive vehicles send power to the back wheels.
• Rear-wheel drive is common in trucks and performance vehicles.
• Four-wheel drive sends power to all four wheels.
• Four-wheel drive improves traction on rough or slippery surfaces.
• Some four-wheel drive systems can be turned on and off.
• Look under vehicles to identify drive system parts if possible.

Resources

• Ultimate Drive Train Guide (video)

Leader Tips

• Use diagrams to compare drive systems.
• Point out differences on real vehicles if available.
• Relate drive systems to weather and road conditions.
• Keep explanations focused on traction and vehicle handling.

Requirement 10a: Brake Systems and ABS

What You Need To Do

Learn how a vehicle brake system works. Find out how antilock brake systems help drivers maintain control during hard braking.

Helpful Tips

• Pressing the brake pedal creates pressure in the brake fluid lines.
• Brake fluid transfers pressure to the brakes at each wheel.
• Brake pads or brake shoes create friction to slow the vehicle.
• Antilock brake systems prevent wheels from locking during hard stops.
• ABS uses wheel sensors to monitor wheel speed.
• ABS can help drivers steer while braking on slippery roads.
• Brake warning lights on the dashboard may show system problems.
• Low brake fluid can reduce braking performance.

Resources

• Understanding ABS (video)

Leader Tips

• Use diagrams to explain brake fluid movement.
• Point out ABS components if possible.
• Explain how friction slows the vehicle.
• Connect brake safety to everyday driving situations.

Requirement 10b: Disc and Drum Brakes

What You Need To Do

Learn the differences between disc brakes and drum brakes. Compare how each system stops the vehicle.

Helpful Tips

• Disc brakes use pads that squeeze against a metal rotor.
• Drum brakes use shoes that press against the inside of a drum.
• Disc brakes usually cool more quickly than drum brakes.
• Drum brakes are often used on rear wheels of some vehicles.
• Disc brakes usually provide stronger stopping performance.
• Both systems use friction to slow the wheels.
• Worn brake pads and shoes reduce stopping ability.
• Brake parts should be inspected regularly for wear.

Resources

• Drum vs Disc Brakes – What Are the Differences? (Which Is the Better Choice?) (video)

Leader Tips

• Show Scouts pictures or real brake parts.
• Compare disc and drum systems side by side.
• Explain how heat affects brake performance.
• Keep explanations simple and practical.

Requirement 10c: Checking Brake Condition

What You Need To Do

Inspect the condition of a vehicle’s brake system. Identify signs of wear or damage and suggest needed repairs.

Helpful Tips

• Check brake fluid levels in the reservoir.
• Look for leaks around brake lines and hoses.
• Inspect brake pads for wear.
• Listen for squealing or grinding noises during braking.
• Feel for vibrations when pressing the brake pedal.
• Check brake rotors for grooves or damage.
• Look for warning lights on the dashboard.
• Recommend replacing worn pads, damaged parts, or leaking lines.

Resources

• How to Check Pads and Rotor (video)

Leader Tips

• Demonstrate safe brake inspections before practice.
• Point out common signs of brake wear.
• Supervise closely during hands-on checks.
• Encourage Scouts to connect symptoms with possible repairs.

Requirement 11a: Vehicle Costs and Insurance

What You Need To Do

Research the value and ownership costs for three vehicles. Compare insurance costs and calculate operating costs per mile.

Helpful Tips

• Compare prices for both new and used vehicles.
• Check fuel economy ratings for each vehicle.
• Liability insurance helps pay for damage to other people or property.
• Collision coverage helps pay for damage to your own vehicle after an accident.
• Comprehensive coverage helps with theft, weather damage, or vandalism.
• Towing coverage can help if the vehicle breaks down on the road.
• Rental car coverage helps pay for transportation during repairs.
• Add fuel, maintenance, and insurance costs when calculating cost per mile.

Resources

• How to Negotiate and Buy a Used Car (video)

Leader Tips

• Help Scouts compare realistic vehicle choices.
• Encourage Scouts to use trusted pricing sources.
• Review how insurance coverage works.
• Guide Scouts through the operating cost calculations.

Requirement 11b: Cleaning and Waxing a Vehicle

What You Need To Do

Choose cleaning and wax products for a vehicle. Clean the vehicle inside and out while protecting paint, vinyl, and rubber parts.

Helpful Tips

• Clear-coat paint protects the colored paint underneath.
• Harsh cleaners and rough brushes can scratch clear-coat finishes.
• Wash the vehicle from top to bottom to avoid spreading dirt.
• Wax helps protect paint from sunlight, water, and road grime.
• Vacuum carpets and seats before wiping surfaces.
• Vinyl and rubber protectants help prevent cracking and drying.
• Rubber door seals stay flexible longer with protectant.
• Use clean cloths to avoid scratching painted surfaces.

Resources

• How to Wax Your Car (video)

Leader Tips

• Demonstrate proper washing and waxing methods.
• Explain how dirt can damage paint over time.
• Encourage Scouts to use products made for vehicles.
• Remind Scouts to work carefully around trim and painted areas.

Requirement 11c: Using a Jack and Changing a Tire

What You Need To Do

Locate the vehicle jack and use it correctly. Demonstrate how to safely change a tire.

Helpful Tips

• Park on flat ground before using the jack.
• Turn on hazard lights before starting.
• Place wheel chocks or blocks behind the tires.
• Loosen lug nuts slightly before raising the vehicle.
• Use the jack only at the recommended jack points.
• Raise the vehicle only high enough to remove the tire.
• Tighten lug nuts in a crisscross pattern.
• Store the jack and tools securely after finishing.

Resources

• How to Change a Flat Tire (video)

Leader Tips

• Demonstrate safe jack placement first.
• Watch Scouts closely during lifting procedures.
• Emphasize stability and safety during tire changes.
• Review the correct lug nut tightening pattern.

Requirement 11d: Oil and Oil Filter Change

What You Need To Do

Perform an oil and oil filter change on a vehicle. Learn how to dispose of used oil and filters properly.

Helpful Tips

• Warm oil drains more easily than cold oil.
• Use jack stands if the vehicle must be lifted.
• Drain old oil into a proper drain pan.
• Replace the drain plug securely after draining.
• Rub clean oil on the new oil filter gasket before installation.
• Add the correct amount and type of oil for the vehicle.
• Check the oil level with the dipstick after refilling.
• Take used oil and filters to a recycling center or auto parts store.

Resources

• How to Change Your Oil (website)

Leader Tips

• Review safety procedures before starting the oil change.
• Demonstrate proper filter removal and installation.
• Watch for spills and encourage careful cleanup.
• Discuss why regular oil changes help engine life.

Requirement 12: Automotive Careers

What You Need To Do

Research three careers in the automotive industry. Choose one career and learn about the education, training, and experience needed for that job.

Helpful Tips

• Look for careers connected to your interests and skills.
• Research what training or schooling is needed for each career.
• Find out if certifications are required for the job.
• Learn what daily work tasks are part of the career.
• Ask adults about careers they know in the automotive industry.
• Compare indoor and outdoor work environments.
• Learn which jobs require customer service skills.
• Research how technology is changing automotive careers.
• Find out which careers involve hands-on repair work.
• Think about which automotive jobs match your future goals.

Careers To Consider

• Automotive Technician
• Service Manager
• Automotive Engineer
• Auto Body Repair Technician
• Automotive Designer
• Parts Specialist
• Automotive Sales Consultant
• Collision Estimator
• Automotive Instructor
• Automotive Electrician

Resources

• 10 Exciting & Rewarding Jobs in the Automotive Industry (website)
• Automotive Jobs: The Highest Paying Ones (video)
• Best Careers in the Automotive Industry (video)

Leader Tips

• Encourage Scouts to explore careers matching their interests.
• Discuss both technical and customer service jobs.
• Help Scouts connect merit badge skills to real careers.
• Invite automotive professionals to speak if possible.

More Merit Badge Resources

The Automotive Maintenance merit badge gives Scouts a practical way to learn everyday skills. It fits well within the full merit badge program because it focuses on real-life knowledge that many Scouts will use as they get older. While other badges explore science, outdoors, or hobbies, this one teaches how cars work and how to keep them safe. It adds variety to the long list of choices and gives Scouts a chance to work with tools in a simple, hands-on way.

It also connects to other badges that build mechanical skills, like Welding or Engineering. Scouts who enjoy working with their hands often find this badge a good starting point. It helps them see how mechanical systems fit together.

Learn More about Scouts BSA

The Automotive Maintenance merit badge supports the larger goals of Scouts BSA by teaching responsibility, problem-solving, and careful planning. These traits help a Scout grow as a leader.

It also ties into fitness, citizenship, and personal growth. Basic car care encourages safe habits. Understanding how vehicles affect communities helps Scouts make better choices. Learning these skills builds confidence and independence.

What is the Automotive Maintenance merit badge?

The Automotive Maintenance merit badge teaches Scouts how to take care of cars. It includes learning about vehicle systems, maintenance tasks, and safety.

What will I learn while earning the Automotive Maintenance merit badge?

You will learn how to check and change oil, replace tires, inspect brakes, and understand vehicle systems. You will also learn about safety procedures and tools.

Do I need any prior experience with cars to earn the Automotive Maintenance merit badge?

No prior experience is needed. The badge is designed to teach you everything you need to know about basic car maintenance.

What tools and supplies will I need for the Automotive Maintenance merit badge?

You will need basic tools like wrenches, a jack, a tire gauge, and an oil filter wrench. Your merit badge counselor will provide a complete list.

How long does it take to complete the Automotive Maintenance merit badge?

The time to complete the badge varies. It depends on how quickly you learn and complete the requirements. It can take a few weeks to a few months.

Can I work on the Automotive Maintenance merit badge with a friend or family member?

Yes, you can work on the badge with others. Just make sure you complete all the requirements and learn the skills yourself.

Where can I find a merit badge counselor for the Automotive Maintenance merit badge?

Your Scoutmaster or local council can help you find a merit badge counselor who is certified to teach the Automotive Maintenance merit badge.

Do I need to own a car to earn the Automotive Maintenance merit badge?

You do not need to own a car. You can practice the skills on a family car or another vehicle with permission.

What should I do if I have trouble with a requirement for the Automotive Maintenance merit badge?

Ask your merit badge counselor for help. They are there to guide you and answer any questions you have about the requirements.

Will earning the Automotive Maintenance merit badge help me in the future?

Yes, the skills you learn will help you take care of your own vehicle and can save you money on repairs. It can also help if you are interested in a career in the automotive industry.

The Automotive Maintenance merit badge is perfect for Scouts who want to learn how to take care of cars. This badge teaches you the basics of vehicle maintenance and safety. You will learn how to check and change the oil, replace tires, inspect brakes, and understand different vehicle systems.

Earning the Automotive Maintenance merit badge is not just about getting your hands dirty. It is about understanding how cars work and how to keep them running smoothly. You will learn to identify common issues and how to fix them. This knowledge can save you money and time in the future.

Working on the Automotive Maintenance merit badge also helps build confidence. Knowing how to handle basic car problems can make you more self-reliant. Plus, these skills are useful for anyone who plans to drive a car. You will be better prepared to take care of your own vehicle someday.

Overall, the Automotive Maintenance merit badge is a practical and rewarding badge to earn. It provides valuable skills that you will use throughout your life. Whether you are interested in cars as a hobby or a career, this badge is a great place to start.