• Charge the vehicle battery fully.
• Install fresh transmitter batteries.
• Check that the wheels spin freely.
• Inspect tires, wheel nuts, suspension arms, and steering linkage.
• Test steering and throttle with the car lifted off the ground.

• Car does not move: Check battery connection, power switch, and transmitter batteries.
• Steering works but throttle does not: Check battery charge, motor wiring, and drivetrain blockage.
• Pulls to one side: Adjust steering trim and inspect tires and linkage.
• Clicking or grinding: Stop driving and inspect gears, wheels, and drivetrain parts.

Turn off the car, disconnect the battery, remove dirt or debris, and let the motor and battery cool before storage or charging.

Runtime varies by model, battery condition, driving surface, throttle use, and driving style. Smooth driving uses less power than constant full throttle, hard braking, tall grass, or loose dirt.

• On-road cars: Pavement, asphalt, concrete, and smooth packed dirt.
• Off-road models: Rougher surfaces within the model's design limits. Avoid deep sand, mud, tall grass, and large jumps unless your model is built for that use.
• Speed cars: Smooth pavement for stable high-speed runs.

Some models can handle light puddles or wet grass, but they are not fully submersible. Avoid deep water and dry the chassis carefully after wet runs.

• Check battery charge and connector fit.
• Turn transmitter on first, then the car.
• Replace low transmitter batteries.
• Inspect wires after a crash.
• Check drivetrain movement for rocks, grass, or binding.

• Inspect suspension arms for cracks or bending.
• Check shocks for leaks or bent shafts.
• Make sure wheel nuts are tight.
• Look for bent driveshafts or stripped gears before the next run.

Check the surface first. On-road models work best on smooth pavement, while off-road models can still struggle in deep mud, loose sand, or tall grass. Clean the tires and drivetrain after use, and avoid running where debris can block the wheels or gears.

Slow down before turning, especially at high speed. Sudden steering input, rough terrain, and loose battery placement can all make the car roll over more easily. Keep the battery seated securely and drive more gently on uneven ground.

Stop driving and inspect the tires, suspension arms, gears, driveshafts, and wheel nuts. A small impact can shift the gear mesh or bend a part, which can make the car noisy, slow, or hard to control.