Question about 2002 Audi A4
My window lock button is stuck on. I can only roll the windows down by doing it from the drivers side, however the bummer is my driver window is also locked?? This all started when I pushed the lock button for the first time.... Any ideas on how to unlock it?
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Posted on Jan 02, 2017
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.
Posted on Aug 19, 2008
SOURCE: i have an audi a4
This is a common problem with your shape A4, pre 2001 A4s and old shape A6s. Rain water builds up in the area under the bonnet where your battery is. This can be accessed by removing the long black trim under the windscreen covering the battery. This area has two drain holes with small rubber tubes on it, these tubes get blocked over time by leaves, dirt etc. They need to be unblocked, and the tubes can be completely removed (and left off). This is much easier to do underneath the car but at least one can be done from the top. Its under the battery though. Be aware when you disconnect the battery, you will lose your radio coding.
It needs to be done though as if the water is coming in the car then it must be high. The water has most likely damaged your convenience control unit (electronic control unit) under the carpet of the footwell, this controls the failed electrical items you described. The water can cause further problems, electrical as it submerges the battery! And brakes as the brake servo can **** the water in causing many problems! Well worth getting it out sooner rather than later. Hope this helps and hasnt scared you too much. Good luck
Posted on Jan 23, 2009
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