Central Locking

[jparkgb]

I'm having a problemwith my Mk 4 '99 1.6SE

All doors etc lock fine using the keyfob.
All doors lock fine using the key in the drivers door.
But, if I use the button inside the car to lock all my doors (as I drive through a dodgy looking area typically!) the offside rear passanger door unlocks itself straight after being locked.

Not too great from the security point of view.

Has anyone had a similar problem with their Golf?

How much did it cost to get fixed?

Thanks


James