Internal fog

[Gastarg]

First time that happen to me, I had a lot of times, fog in the rear window, which make very hard to use the mirror, vut yesterday, had fog inside the mirror itself !!!

Anyone know if, opening windows, or leaving it off... Or, how to remove quicker that fog ?

[RAL7004]

Interesting – had the same experience (for the first time) last week!
Was a humid day, approx. 4-5 °C.
The whole thing disappeared after a good 10 minutes....

[EEEE]

Not had this happen to me - but I have recently resorted to using the mirror in the TV mode. This will generate heat and make any fog less visible. I guess if you switch from using it to turning it off, as it cools it could draw in moisture? I guess the only fix is to turn it on for an hour so it warms through (And then make sure the inside of the car is dry via the aircon and heating controls).