strange electrical problem possibly involving my alarm

[Schnitzelwagen]

Hello all...
for about 2 months i have had a very strange problem with my 2007 quattro cabriolet. it all started when i noticed the drivers rear window would not go all the way down. it did this for a while, it would get 2/3 way down and then stop. then a few weeks later i put down the drivers window to mail some bills and it wouldnt go back up. also the key fob stopped working. i pulled the battery and let the car reset itself and replaced the battery in the fob for good measure. after this the car behaved itself... for about 10 minutes, then all hell broke loose. the car stopped responding to the fob intermittently, the alarm light would flash in a very odd pattern, the alarm would go off at all hrs when ever the hell it felt like it and now im stuck unlocking my car with the key like some sort of animal from the 70's. does anyone have any idea what direction to point me in. i am an automotive technician by trade and a fairly good one but this has me scratching my head.[headbang]

[Okedokey]

I would be looking at the instrument cluster. But before you do anything, you need to make sure your battery is fully charged. Then get it scanned, record the results.

[Schnitzelwagen]

Battery tested good as did the alternator, however I noticed that when I turned off the perimeter/security lights the problem went away so in leaning towards this. Also when I jiggle the switch the back lighting flickers on and off

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[Schnitzelwagen]

Spoke too soon. When I start up the car in the morning the interior lights flash also, I'll dig into the cluster later if it's slow here

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[Okedokey]

scan car

[Schnitzelwagen]

I'll do that, something is draining the battery slowly though so maybe something isn't shutting off

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[Okedokey]

With your car off with keys out, test amps at each fuse location until you total up the power loss

[Schnitzelwagen]

Update!!

Narrowed it down to the comfort control module thanks to German Auto Pros. When I lifted up the drivers carpet i found a LOT of water down there and the housing that looks like it is supposed to be water tight clearly let in moisture. the board is clearly damaged by water and it looks like there is corrosion on one of the plugs. My Question is can I use any comfort control module from a B7 or do I HAVE to use a cabriolet specific one

[Okedokey]

Well done, thanks for providing the conclusion. That’s what makes a good forum

[BenMTL]

Exactly what I was going to recommend, it sounds like you have 2 unrelated problems, first issue with alarm/key fob = CCM, and second with windows = window regulators.

[B7S3wannabi]

Open the CCM and clean the board with a toothbrush and rubbing alcohol. Same with the connector. Let it dry and reinstall. You may be able to save it.


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[Schnitzelwagen]

Replaced the comfort control module with a used one from a good salvage yard in jersey. ill get the name up here as soon as i find the they sent it in. with the cabriolet you have to use a ccm from a cabriolet or else it wont work. i also had a few bad wires that needed to be fixed. everything works as it should now and the universe is back in balance