So about 6 years ago I had a vw Bora V5 Sport, had electric rain sensors and auto dimming mirror, which was fine until we had a summer where it got to about 34c, which inside the car was more like 3000c, so the mirror died and so I got a second hand one on ebay.
Last year in March I bought a mk4 4motion and managed to get 50 quid off because the mirror had already done the same thing, struggled to get a new mirror, but managed to find one for about £45, which has died recently it seems (as my car gets hot in the later part of the day parked on the drive).
I thought rather than muck about trying to find another mk4 golf/bora one which are starting to get rare, are there any other ones? are Passat ones of the same era the same? I presume if so that models up to 2005 fit.
What about mk5 golfs, seems auto-dimming mirrors were more common in the mk5, even though they are slightly different.
Finally regardless of what I do, is there any way to stop it happening or is it just random luck?