for your 98 Jetta to program your remote. You must have 2 keys
1 switch ignition key on and get out and close the door.
2 with the 2nd key turn the door lock to the unlock position and hold it there until you get 3 beeps from the horn.
3 Quickly press the unlock button on the remote once,if you have more than 1 remote to do they must all be done within one minute.
4 again turn the key in the door lock to the off position and hold it there until you get 1 beep (about 10 sec)
5 open the door and turn the ign key off.
It worked for me,right out of the CD manual,just did it yesterday and still had the peice of paper i had written it on handy. Don