It was a pretty cold long weekend here in Greater Vancouver. Before I went into my local Audi dealership to check out the TT, A6 2.7T and 4.2 (more story later); I locked the doors as usual. There was no "beep" when the door's locked; however, the door's closed properly. The same thing happened ever since that moment, no "beep" whosoever.
Is it because of the battery of the remote or is the alarm?
Tom
97 A4 1.8TQMS
99 JETTA IV GLS 2.0
00 (OR 01) NEW BEETLE GLS 1.9TDI (ON ORDER)
98.5 A4 1.8TQAS WETTED

I had the same thing happen. Only my trunk wasn't closed properly. I managed to drive around for half a day before I went to open it, and found that it was already open. Yours may not be caused by this, but I found trunk needs to be "firmly" closed (not slammed), otherwise it appears to be closed. The trunk doesn't float open like on Japanese cars I've owned.

Really. (nt)