Originally Posted by JINT
one of my buddies 540ia headlight fogged up and stays like that. Light expired already?
This is why BMW changed the adhesive in 2003, it didn't work so good.
If his 540 is not a 2003, he can remove the headlight, heat the seam with a hair dryer and open up his headlight. Then clean up the inside and let it dry. After a few days re assemble with hair dryer and problem should be solved.