Traction control is a system that integrates with the engine control system, brakes, and antilock brakes to control wheel slippage under acceleration.
By working with other vehicle systems, traction control manages these systems to limit and redirect torque output to the drive wheels of the vehicle. The end result is optimum torque output at the wheels for virtually any driving condition. When the traction control system senses slippage at a given drive wheel, it may limit engine output through various control strategies and apply the brakes.
Traction control is more of an integrated strategy than a system of its own; by itself, traction control requires no dedicated maintenance. To ensure proper traction control operation, regular maintenance of related systems is a must. This means regular brake inspections, replacing worn brake parts and flushing/refilling of the brake hydraulic system per the manufacturer's recommendations. Regular engine performance checks also help to ensure proper traction control operation. Faults in the engine's control system can affect traction control, so have any problems corrected as soon as possible.
Most traction control systems use a warning light on the dash to alert the driver of a system fault. This light should come on momentarily (bulb check) when the ignition is first turned on, and then go out. If the light doesn't come on when the ignition is first turned on, stays on or comes on while driving, the traction control system needs to be checked for faults. Contact a professional service technician to have the system diagnosed.