How To Take A Volkswagen Key Apart. On the old key it may be a little more difficult. For mk3 1995-1999 Jetta TDI or Passat.

Pull the key in to its 2 halves. The cost depends on a number of factors. Pull other 2 halves apart.
The disassembly includes how to open the case remove the batt.
Volkswagen Key Disassembly In order to replace the battery on a Volkswagen Key you first need to disassemble your key. Remove the screw under the emblem. Once you get it apart you will see a little spring pin that holds the blade. Also includes immobilizer info.

