Folding mirror issue

[Mugzee]

Since owning the car (FL 4.2 QS), there has always been a problem with the folding mirrors. Folding them in is fine but when you want to fold them out again, there is a delay for a number of minutes before they do so.
Just received a replacement module from a8parts but the problem is still there.
I've done extensive research but found no definitive answers.

Anyone have any ideas? Would be greatly appreciated.

Tom.

[moltuae]

Could be something simple like a bad contact on the switch. Have you tried wiggling the switch or switching it back and forth?

I haven't checked the wiring diagram, but I would imagine you could also remove the connector from the switch, test the switch with a multimeter, and also bridge the appropriate pins on the connector to confirm whether or not the switch is the problem.

[HPsauce]

Presumably both mirrors fold out smoothly and simultaneously once they start?
The panel holding the switch comes out easily enough for testing. Might just be a bad contact?
I expect our sponsors can supply a new switch cheaply enough. They can: http://www.ebay.co.uk/itm/Audi-100-A...-/191510089465

I've got a whole spare (painted style) drivers door switch panel complete with all the switches. As it's in a box beside me I just checked and popped the switch out - it's one unit with the mirror adjustment rocker. 4A0 959 565B
Small recessed 8-pin connector so not that easy to test.

[Mugzee]

I suppose it could be the switch but I can hear the relay clicking in the footwell as I turn the rotary selector from fold to unfold. Very odd that they'll fold in but not out again. Both mirrors operate together and smoothly, when they do!
Maybe I do need to get the multimeter out.

[moltuae]

Originally Posted by Mugzee

but I can hear the relay clicking in the footwell

Could just be the relay contacts in that case.

[Mugzee]

Do you mean the relay contacts in the module in the footwell? How likely do you think it is that the second one from a8parts would cause the same issue?

[moltuae]

I was assuming you were referring to a separate relay, but yes, thinking about it the relay is probably an integral part of the module and, while possible, it's probably unlikely to be a fault with the module if you've changed it.

I haven't checked the wiring diagram, but I suspect that, if you can identify which connections go to the mirror motors, you could unplug the module and activate the mirrors manually, using a link wire or 'Power Probe' to determine if the fault is post or pre module.

[Mugzee]

Just tried the mirrors again today and they now work correctly. Strange.