All you need is a low-watt soldering iron and a little bit of solder. From there the steps are pretty simple to fix the MK4 door locks: Re-melt the solder joint
Full Answer
How to fix Mk4 door locks?
From there the steps are pretty simple to fix the MK4 door locks: The first step should re-establish the connection. Adding more solder will simply help strengthen the connection and hopefully avoid the issue popping up again in the future.
What kind of door lock does a VW MkIV have?
Unlike a basic mechanical door lock the VW MKIV uses an electro-mechanical device called a door-lock module or mechanism. It’s pretty standard tech on modern day cars, but it was relatively new during the MK4’s production. The door lock mechanism resides inside the door hidden behind the inner door panel and window regulator carrier.
How do I replace the lock on my door lock?
The easiest way to replace the lock it to dill out the small rivet (red arrow) holding it to the plastic bracket mounted to the door. Release the small snap clip (yellow arrow) to fee the lock from the bracket.
Are there any problems with the door lock on a Volkswagen?
A lot of Volkswagen’s that experience the door lock issues are in the 1999-2001 era. However, the issues aren’t limited to only those years. As explained in the introduction, it’s not just one problem like the doors not locking. There are all sorts of odd issues with the MK4 door locks.
What is a VW MKIV door lock?
Unlike a basic mechanical door lock the VW MKIV uses an electro-mechanical device called a door-lock module or mechanism. It’s pretty standard tech on modern day cars, but it was relatively new during the MK4’s production. The door lock mechanism resides inside the door hidden behind the inner door panel and window regulator carrier.
Where are the micro switches on a MK4 door lock?
The above image shows three of the four micro-switches. The fourth is found within the mechanical portion of the door lock module. The part numbers for the MKIV micro-switches are as follows:
How many micro switches does a MKIV have?
The MKIV uses at least four micro-switches; two determine if the key being turned to lock or unlock the doors and open or close the windows. Another monitors the locking mechanism and whether the door is locked or unlocked. Finally, the fourth monitors the position of the door (open or close).
Is the MK4 door lock localized?
There are all sorts of odd issues with the MK4 door locks. It’s also not localized to one specific door, but rather may occur to any or multiple doors.
Is a door lock module too expensive?
The door lock modules really aren’t too expensive individually. However, the cost may add up if you’re needing to fix multiple doors, especially if you go to a repair shop. For the DIY crowd, you may simply follow the above linked instructions for removing and replacing the door lock module. The parts are as follows:
