I had a small problem yesterday, I locked my car and I noticed the drivers door mirror did not fold.
I was expectating to remove the door mirror and look whats gone wrong and, probably have to get another one, ££££'s
Anyway, before taking the mirror off I thought I would try a little fine spray oil, from the outside of the car, I have an aerosol can of maintenance oil that has a small plastic tube. I sprayed oil to where I believe the mechanisim was, on the part attatched to the door from where the mirror body swivels, now the mirror moves as it should, so I went and done the same to the other side. Only time will tell if this has permently fixed the problem - fingers crossed.