[Simple5]

SO I just finished washing the car a while ago and when I turned on the car I had the dreaded headlight malfunction along with the front headlight signal, angel eyes, and marker not working.

After 1/2 an hour the side marker in the headlight along with the angel eyes came back on but the adaptive headlight still threw a code.

Another 1/2 an hour the headlight is working normally again...

Anyone ever had this happen to them? Can't exactly put in a warranty claim when its now functioning properly again...

[bimmertaxi]

Had this happen to me recently. Headlight worked again after I pulled and reinserted the fuse for the headlight driver module. I believe it leaves a bunch of fault codes that can be diagnosed. The dealer were prepared to swap the module if necessary, but I haven't been to the workshop yet.

I have the LED headlights btw.

[Simple5]

So pretty much we're taking a gamble when washing our cars even? I wonder if taping off the outer edges of the headlights and also near the fender liners would help with water not getting into the module area.. my car is garaged so in reality I only wash it once every couple of weeks..

[Pmen]

Just went through the same problems. Car wash brought on left turn signal and adaptive error lights. Turns out the circular cover on the back of the headlight assembly, accessed through the wheelwell had come loose and was lodged between the frame and the wheelwell. Put a hair dryer into the headlight to dry it off and reseated the cover on the back of the headlight and errors went away. All is good. There are two screws at the top of the wheelwell that hold a cover in place that allows access to the back of the headlight assembly.

[Simple5]

Originally Posted by Pmen

Just went through the same problems. Car wash brought on left turn signal and adaptive error lights. Turns out the circular cover on the back of the headlight assembly, accessed through the wheelwell had come loose and was lodged between the frame and the wheelwell. Put a hair dryer into the headlight to dry it off and reseated the cover on the back of the headlight and errors went away. All is good. There are two screws at the top of the wheelwell that hold a cover in place that allows access to the back of the headlight assembly.

Finally got a chance to jack up the car and take a look. Sure enough, the affected side, the passenger side, was indeed missing the rear circular cap. Made sure to give it an extra turn for tightness..

Thanks dude! Would have looked silly taking it to the dealer!