Hello, my 2005 Audi Allroad C5 platform had some water in the BACK of the car due to clogged sunroof drain. The car was parking upwards in a slope and the amp ceased to work correctly when I turned on and off the car, the speakers made a lound sound.
I removed the water from the back of the car then parked it inside a roofed and level garage. Three days later the battery was dead so I replaced it and removed the amp on the back of the car.
About two weeks later, the car alarm started behaving strangely it would not stop when I pressed the remote control key, and at times would not stop even while driving, and the power lock worked only some times. A few weeks later the power lock ceased to work altogether not working from the remote control key nor from the button on the door, the interior lights stopped working and the windows stopped working too.
I checked the fuse #14 and it looks good, I even changed it with another fuse. There was some humidity under the carpet but not too much, and there was no sign of water inside the CCM box. The connectors of the CCM were also looking good. Anyhow, I bought another CCM with the exact same number but nothing changed.
I don't know what to do now. One odd thing that may or may not be related: the internal motion sensor light on the driver's door pillar remains ON no matter if I push it. The internal motion sensor light will turn OFF without fuse #14, so while I look for a solution, I have been leaving fuse #14 disconnected for fear if having the battery drain again, but I'm wondering if this could have something to do with the door locks / windows / interior lights problem.
Thank you for your help
Maybe the convenience (or comfort) control module under the driver seat carpet also got water damaged? If you have VAGcom (VCDS), run diagnostic scan and post here.
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