HELP! my 2002 audi a4 drivers window and electric mirrors are not working. also when doors lock on central locking the alarm doesn't arm, but then does 30 secs later also the central locking switch on drivers door works but led does not illuminate. and the anti tilt and movement sensor override switches on drivers door do not work either!

SOURCE: audi a4 1995 central locking problem

Hi there.
I had exactly the same problem and there are 2 ways of solving it. The first is to pay your Audi Service Centre £350-£550 to replace it for you and the second way is to do it yourself which will cost well under £100 (depending on ebay). Firstly check the Central Locking Pump to make sure the hoses haven't come off. This is located in the very back right hand corner of the boot so you will need to remove the carpet and internal trim and you will see a block of sponge. Carefully lift the top off this and you will see the pump sat inside it.
Actually there is a great set of photos online to help you and I will add the link for you at the end. If the hoses are still connected and not leaking it is very likely that the internal compressor wheel has shattered (quite a common fault). I believe it is possible to open the pump and replace this wheel (in fact there is one for sale on a very popular auction site at the moment) but my own preference was to simply buy a whole new pump and replace that (£16.00 + £8 p+p off the same auction site).
The most important thing for you to remember is that when you look to buy a replacement pump you need to find one with the EXACT same serial number. The one in the diagram shown is
8LO 862 257 N but I have a sneaky feeling yours might end in an A.
Anyway, I hope this is of some help and dont worry about the connections as both air connectors and all 3 electrical ones are different sizes and will only fit in one place each.
Good luck.
Rik

http://www.audiworld.com/tech/elec131.shtml

SOURCE: Audi A4 Y Reg 2001, Central locking

reset you computer, do this by removing the positive battery cable for 10 mins.

SOURCE: Audi fault code J386 (2002)

There's a TSB on that problem. It involves broken wires in the A and B pillar from the central convenience module to the rest of the car. Ask your VW dealership or what not for a more specific answer.

SOURCE: audi a4 1.8t windows, interior light wing mirrors not working

Folks, Just found my problem ...... There's a flexible conduit (corrugated rubber sleeve) between the driver's door and the door arch which contains the wiring loom for the drivers door central locking/door speaker/electric windows/mirrors etc....discovered when I slipped off the sleeve that 4 cables in the wiring loom had broken due to repeated flexing when drivers door was opened/closed over the years (2001 Audi A4). Resoldered broken wires and insulated same....now working better than ever again ...ie dashboard back lighting seems brighter than it had been for some time? Also drivers door loudspeaker is back in action again (hadn't noticed that it had gone).
It's kinda difficult to reseat the rubber sleeving correctly after the repair job...will probably use some silicone sealant on the sleeve to ensure that there is no water ingress to wiring loom afterwards. I'm not too impressed with Audi design people after that, should have used cable that has a better flexibility rating (esp on drivers door!).

Paul.

SOURCE: replacing the wing mirror on an audi A4

TO FIT A NEW MIRROR FIRST CONNECT THE WIRING PLUGS THEN ENSURE THE FRICTION PIN ON THE BACK OF MIRROR ENGAGES IN THE SLOT (OUTER EDGE OF MIRROR) PRESS FIRMLY AT THE CENTRE OF THE MIRROR TO ENGAGE THE RETAINING CLIP....IF YOU NEED TO REMOVE MIRROR INSERT A FLAT TOOL BEHIND THE LOWER EDGE AND LEVER IT FROM THE CLIPS.. HOPE I WAS OF SOME HELP TO YOU...