I have a 2007 MCS with Xenon headlights. When I turn the headlights on while the car is not running, they work. When I start the car, both headlights flicker horribly. I have replaced the bulbs and the ballasts with new. The body control (footwell) module has also been replaced. Problem still persists. I now believe that the problem is bad headlight grounding. Can anybody tell me which of the many grounds to chassis located throughout the car grounds the headlights?

 

check newtis.info

 

Thank you. That gives me some places to try.