ASC (Automatic Stability Control) is a system that was installed on Jaguar and BMW cars. It first appeared in 1997. It limits engine power, thereby helping to prevent skidding. The system improves vehicle dynamics and handling on slippery roads and also prevents skidding.
HOW ASC WORKS
ASC is closely related to the anti-lock braking system and shares a common control unit with it. Through the ABS sensors, the control unit monitors wheel speed. If one of them starts to slip, the engine control unit (DME) intervenes. It sends a command to the engine to limit the output power. This is achieved by cutting off one or more fuel injectors. Ignition timing and throttle position can also be adjusted.
The system activates automatically when the key is turned in the ignition switch. When driving with snow chains or on sand or fresh snow, it is advisable to deactivate the system by pressing the button on the center console. Hold the button down for a few seconds to deactivate the system.
POPULAR CARS EQUIPPED WITH ASC
- Jaguar XJ8
- BMW 5 Series E39, 3 Series E46, 6 Series E63, 7 Series E65, E66, E67