02 plate vw golf door

It is a common problem
http://forums.vwvortex.com/zerothread?id=1542461&page=1
Usually it is a result of breakage of the soldered joints to the
module in the door. I guess that the part of the module with
the pins are fixed to the door, but the board that they are
soldered to is not fixed. So as one shuts the door, over time,
the pins poke further through the board and break the (rather
weak) soldering that holds them to the board. Then the board
is loose, and an intermittent fault prevails. There are six solder
joints that are prone to this failiure. Particularly two of the pins
have a tendency to poke too far and break their soldered
connections. The symptoms (never locking, appearing locked
even when not locked, being unable to unlock etc) may depend
upon which of the joints have broken.
Sometimes it can be one of the four (?) microswitches that fails.
This will usually (but there are hacks) *require* you to replace
the module.

But particularly when the fault is intermittent, it seems fair to
suspect a break in the soldering which, if you can get the door
open, can be fixed with a soldering Iron.

Thus....

You can buy a whole new module (at about 100-150USD) plus
installation (perhaps another 100 USD). Or you can open up
the door (see link above) and try re-soldering the joints yourself.
Several people have said that re-soldering works for them.

We are going to ask our garage to open up the door and try
and do the soldering ourselves before askign them to order a
new module.

are they frozen with the cold ??...or can you open drivers door with the key if yes then a fuse has blown or the fuse has a high resistance on its contacts which will be evident by blackening on the connections.battery flat in master key is another possibilty but door will open with key if it is