Vw beetle (2003) door lock

SOURCE: How do I remove the door panel on my 2003 VW Beetle?

Disconnect your negative battery cable. Locate and remove the screws that hold your interior door handles in place (they may be hidden by snap in, or snap on clips). Remove the interior door handles, then disconnect the wire clips to the switches. Your panel is held in place by snap in clips; use a small pry bar to pull them from the door (try to get as close to, or directly under the clips to prevent them from tearing out of the door panel). Once the clips are pulled, pull the panel upward to remove it from the door.
Install in reverse.

SOURCE: VW 2000 New Beetle door sensor/car alarm goes off when doors open.

I found a thread - http://forums.vwvortex.com/zerothread?id=1542461 that details the repair of the soldering on the key lock door module. Our 2000 new beetle had the same issue. Also sometimes it refused to start. Soldering pins fixed it all.

Also see http://forums.vwvortex.com/zerothread?id=1015107 for releasing window from track, And door handle from inner panel.

I ripped the door apart and re-solderd the pins. I only had one pin with cracked solder but two others looked thin so I did them while I was in there. It's about a four or five hour project if you have all the tools. (8mm triple square also called an 8mm internal was the hardest to find - Also needed Torx T8 T10 T15 and T30 plus Philips Screw Driver. )
Project is difficult but not too bad for the mechanically inclined. A 7 on a scale of 10.
Since re-soldering pins - no more issues! My guess is that a VW dealer would get $200 for a new moduel plus 5 hours of service time for this gig - easily a $500 to $1000 bill. My cost - several new tools - about $25.00.

SOURCE: Have a 2000 VW Beetle. The alarm won't turn off!

My 2000 Beetle does same thing (although not all the time). Just found an internet post that suggests there is a problem in the door lock sensor. I assume you are using a regular key - not
the keyless entry - like I am. He also said that you can disable the alarm (also disables the
keyless entry - which doesn't bother me) by leaving the front door AND the rear trunk open and
starting the car up. Seems to work so far. I will get the door lock sensor replaced and turn the
alarm system back on (not sure how yet), and let you know if that stops the problem.

SOURCE: Central locking issue on my Land Rover Discovery II 2003

Does it open from the outside once you have manually opened it from the inside.

SOURCE: VW Beetle door won't open

2002 VW Beetle doors wont open from outside after changing battery