Just unclip and pull back the rubber boot and check the wiring.
Mk5 golf drivers door not locking.
So can you lock the car by using the key in the drivers side door lock.
If one set of switches can control the windows it s likely the switch on the opposing side that needs to be replaced.
Once off the wiring that enters the panel near the latch can be pulled slightly and try the lock unlock with the key.
The power windows lock unlock trunk release mirror switches and all that do not work.
I did find one post on the mk5 golf gti forum that looked hopeful though even though ours is a match not a gti and decided it was worth a try.
You do need two people.
If it works will the wiring pulled slightly the wiring in the actuator will be bad.
9 times out of 10 there is damage to one or more of the wires that run from the door to the body.
One operates the central lock switch on the drivers door while the other tries to open the passenger door.
The windows work off the passenger side switch but not the drivers side or vice versa.
How to remove vw golf mk5 door lock to repair central locking issue.
For further enquires contact wishart auto tech on 03 9329 8792 http wishartautotech.
I tried to lock the door from the passenger s side and the passenger s side would lock but the driver s side would not.
If you look at the other doors that will open you will notice a lever on the side of the latch it will release the latch.
The issue will likely be in the actuator and the drivers door panel will need to come off.
You will not get all the screws out.
Just something els to check while your looking at the wiring at my work we used to see alot of mk5 s with similar faults.
If the lock slowly started to lose power speed locking and locking or would stop working intermittently and start again the motor actuator is most likely to blame.
Golf mk5 gttdi 2 0 nov 19 2007 3 1 on the fuse.