ASR Button
Last edited by buzzsaw21; May 30, 2026 at 10:28 PM.
The LED is controlled by the Electronic Brake Control Module (EBCM) which provides ground to the circuit. You can check that there is ground available on the purple/white wire at the switch when ASR is on and no ground when turned off. If not, then you have either a break in the purple/white wire between the switch and the EBCM or the EBCM is faulty.
The other possibility is that the LED in the switch is dead. It is not considered a serviceable part (although you might be able to replace it if you're good with soldering), so you would have to replace the switch.
The LED is controlled by the Electronic Brake Control Module (EBCM) which provides ground to the circuit. You can check that there is ground available on the purple/white wire at the switch when ASR is on and no ground when turned off. If not, then you have either a break in the purple/white wire between the switch and the EBCM or the EBCM is faulty.
The other possibility is that the LED in the switch is dead. It is not considered a serviceable part (although you might be able to replace it if you're good with soldering), so you would have to replace the switch.





