This is a saga in itself and from what I understand from previous threads here is
how to tell whether you have this function from the factory if you have a SE or FR model:
- Cars which were built up to week 22 (w/c 27th May) had this feature but users reported the mirror not returning after lowering.
- Cars built from week 23 (w/c 3rd June) to week 48 (w/c25th Nov) didn't have this feature added at factory
- Cars built from week 49 (w/c 2nd Dec) has this feature reinstated and the feature works correctly. I can confirm this works as I have a week 50 car and all is good.
If the car doesn't have it the feature can be turned on using vcds, but I'm guessing that it could be unreliable still if the car is built before week 49.
To activate them just place the mirror control into L position (if you're in UK) and engage reverse gear and mirror will dip
