What is the reason for the ABS light turning on and then off after restarting?

[BradleyRose]

ABS light turning on and then off after restarting may be an intermittent fault. The reasons why it does not light up after restarting are as follows: 1. The vehicle has not moved, and the system components have not detected any abnormal data from the sensors. 2. No fault code has been triggered, so there is no current fault code, and the light does not illuminate. Reasons for the ABS light staying on: 1. The current working condition method for exhaust emission testing requires loading the two front wheels, so the vehicle's two front wheels are placed on the rollers of the testing equipment to "drive." 2. The vehicle's ABS control unit can receive normal wheel speed signals from the two front wheels but detects zero speed signals from the two rear wheels. The ABS control unit determines this as an abnormal driving condition, so the ABS system will follow the program to illuminate the ABS light and deactivate the ABS function.