How to program a VW Jetta remote?
Remote Key Programming Instructions
Put one key in the on position in the ignition (do not start) and put another key in the driver’s door and turn to the unlock position (counterclockwise) and hold til it beeps three times, about 10-15 seconds, then return to center position (leave in the door).
Then, hit one of the FOB buttons (if you have more than one, you must program all FOBs at the same time or else ones that worked won’t work anymore).
The horn will beep once for the number of FOB, example: 1 beep for the first FOB, 2 beeps for the second, etc.
Then turn the door key back to left until the horn beeps three times to deactivate program mode, and remove the ignition key.
All done, test your FOBs.