Audi central locking

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: central locking problem

i had a similar problem on the front doors .after taking it to a garage for a quote £ 180 i read into it and there are micro swithches in the locks so with a gentle tap with the hand the door unlocks . hope this helps it saved me the money

SOURCE: Driver door central locking

You need a new door lock unit to fix properly.

SOURCE: vw transporter 05 central locking not working

water ingress in wiring loom below drivers seat, mainly loss of power to pin 23 middle multi plug blue and red wire middle multi plug.

remove drivers seat/frame trace wire back to corroded connection and repair. you may also have to remove passenger seat depending on where the break is. dealer quotes upto 2 hrs

SOURCE: Central locking problems

Aot of cars have problems with the actuators binding up. The sympton is you see or hear the switch trying to but wont.

The only fix is to replace the units.