02 A4 1.8T - Trunk won't open. Searched past posts and found only a single thread.
One suggestion was the lock itself which may be the case. But the OP of that thread (house4sale2) found that if he "shorted the comfort module" that functionality returned to the trunk release mechanism. I thought I'd try that prior to buying a new lock/mechanism.
(Unfortunately house4sale2 hasn't logged on since september so I don't think he'd see a PM).
Posts: 5081
Joined: 2/24/2007 From: Sacramento, CA Status: offline
The comfort control module is under the carpet on the driver's side in a black box. Thats probably not gonna fix your problem though, every trunk problem i ever had with either opening or closing has been the electrical contacts in the trunk latch itself. In other words you need to replace the latch thats attached to the trunk lid. The panel on the trunk lid has to come off then there is two 10mm nuts and two cables holding it in place.
In case anyone else is searching for this problem.
My situation: 2002 A4 1.8T Quattro. Trunk stopped opening via fob, cockpit remote, and trunk "button". You could still hear the little solenoid firing but nothing happened. I was able to use my physical key to open the trunk.
Solution: The solenoid is held to the trunk lid with two screws. One had loosened and the motor moved less then a quarter inch. Take the trunk lid trim piece out, push the motor back into position (obvious when you see it) and tighten the screws.
I took pictures, a video, and wrote up some instructions if anybody wants to see details.
Luckily I did not have to replace any parts (some suggested the motor and others the comfort module). Thanks everyone who helped.
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2002 A4 - Where is "comfort module"? -> T... - 
