Why The ASD light is on in 1991 Mercedes 300E 24?

The ASD (Acceleration Slip Regulation) light on a 1991 Mercedes 300E 24 indicates a potential issue with the vehicle's traction control system. This could be due to a malfunction in the ASD system itself, such as a faulty sensor, wiring issue, or problems with the ABS system that it relies on. It could also signify that the system is actively engaging, typically during slippery conditions. A diagnostic scan can help identify the specific issue triggering the light.