Used to happen to my Beetle all the time. Try dipping you key in rubbing alcohol, should un-freeze it. I suggest taking the entire handle apart and lubbing it up with WD-40 or something. What happens is if you do not have a tight seal water gets in there and drys up the lub and the moisture never leaves. Then when it's cold (like now) it freezes.
my locks freeze up all the time, but i've never had the passenger side freeze up at all... i guess its just cause its not used that much... so if they ever freeze up always remember to try the passenger side cause there's a chance it'll work...
Yeah, you could say my lock froze up. The whole cylinder came out on my key last month. I got a kit at my local VW Dealer which is just the cylinder replacement and you use the same key. Be careful though. There are small springs and wafer parts that cannot be replaced and should be reused. I made the mistake of losing one of the springs and had to hunt around for a locksmith who did VW's and Porshe's to get the little spring. Without the spring it was a re-key job at the dealer which would set me back a hundie.
I'm having a similar problem with the lock on the passenger side. The key turns fine in the lock, and the "plunger" on the door goes up indicating that the door is unlocked but when you pull on the handle, nothing. the door stays locked. So I lock, then unlock the door again....nothing. This seems to only happen at night. It's been cold here in Colorado, but not even close to freezing so I'm stumped. I sprayed some WD-40 on the door latch hoping that would help, but this morning before I drove to work once again the passenger door was locked solid.
Short of opening up the door panel, any suggestions?