Auto darkening mirrors

[erubus]

Hi guys. now that my starting issues are resolved its time to get down to fixing the other annoying niggles that the car has.

One of these is that the driver's side auto darkening mirror very often auto darkens - and stays dark, meanwhile the rear view mirror stops working altogether. The passenger side is not affected due to being a non - darkening replacement.

The problem always occurs on start-up and as far as I can make out can only be fixed by pulling the battery for a few seconds. I originally thought it was due to the car struggling to start and causing various electrical glitches but it has since done it with the fixed starting.

So for the questions: Has anyone experienced this before/know what causes it and know how to stop it happening or even how to reset them without pulling the battery?

I'm slightly suspicious of the power management module. It doesnt communicate with my crappy copy of VCDS so I cant see if it has any faults logged. It seems the auto darkening mirrors are expensive to replace and there is something of a waiting list for them! I would really like to replace both the wing mirrors though as I constantly get dazzled by the passenger side one and the liquid inside the drivers side one leaves a little to be desired.

gill