[Hazel]

My VSC and ABS lights turn on when my headlights switch on. They will stay on until I restart my engine.

I'm not sure exactly when this issue started as it only happened very rarely and I originally assumed it was a wheel speed sensor.

One of the first mods I did to my car was aftermarket headlights and taillights, and I've read around that sometimes those changes can cause this to happen. However, as time has gone on it has become more common and now after I replaced the LEDs in the gauge cluster the warning lights almost always turn on whenever the headlights or marker lights are switched on.

If anyone has any ideas of what might cause or where to start to diagnose this, it would be appreciated.


Edit: After replacing the aftermarket 4th taillight the previous owner installed, the problem has gone away entirely.