Originally Posted by Homerlovesbeer

That means "Auto" headlights so they come on automatically when the light sensor behind your rear vision mirror activates them.

Try this for non Xenon lights.

NOTE: This for the LCI updated E53 from July 2003

This is real OEM complete with all the part numbers

https://www.realoem.com/bmw/enUS/sho...diagId=63_0834