Well our remotes only worked close the car and was driving us nuts. You'd have to be within 10 feet or so to arm or unarm the car. So i looked at the wiring diagram for the comfort control module and found which pin the antenna wire is at. Its pin 10 of the smaller connector (12 pin i think) and is a copper wound wire with a clear sheath around it. its the only one that doesnt have a colored insulation around it. I removed the terminal and wire from that slot and installed a new terminal with 6 feet of wire spliced on. I then routed the new antenna wire along the door sill and to the rear seat area. Its now a 6 foot antenna instead of the small 2 foot one. I then started walking away and arming and un-arming the car. i got to the end of my court (roughly 50 feet) and it was still arming and un-arming even if i held the remote low and not up in the air. Id have to say this was a HUGE imrovement and i am much happier not having to walk down stairs to arm the car.
So if any of you are tired of dealing with the weak range of the remote, perform this repair/upgrade and you will be much happier with the remotes range!
Edit: Look on Page 2 for Write up.
Modified by 03Jetta1.8T at 7:59 PM 7-12-2004