Replace lock mechanisim for jetta 1996

SOURCE: 1998 Jetta Passenger Door Won't Unlock

I had a similar problem with my son's 1998 Jetta K2 4 door. I sprayed loads of WD40 into the locking area from the end of the door through the clip slot, worked the mechanism sprayed some more and finally it start working. My mechanic said these are very prone to moisture causing rusting on the moving parts.

SOURCE: Door not closing, mechanism not ingaging

I had the same problem of the door not closing because of that little mechanism locked down. I kept wiggling and poking the little mechanism and it finally let up after i just pulled open on the inside door handle. hope this helps.

SOURCE: the driver side door lock broke on my 98 jetta door want open

according to my partsman (who has had great advice for many years), you do not have to remove the door panel to replace the door handle which contains the cylinder lock. the handle is released with a screw which you can see when you open the door. you will need a starhead screwdriver or socket. A new handle costs around $40 at a parts store in my area. call around for a locksmith who will re-key your key to the new lock or use the key which comes with the new lock, your choice. i am in dealing with this also

SOURCE: 2003 Volkswagen Jetta Door Ajar Light wont turn off and car alarm

The problem you are experiencing is the drivers side interior light switch is not working. This is usually found in the door latch on later model cars and usually requires the complete latch mechanism changing. However it would pay to check that your car doesn't have a pin switch fitted in the pillar.Unfortunately I think you have the former.

SOURCE: 03 VW Jetta Door Ajar light remains on, red door light too

door switch is not working.