I am driving and the car is unlocked, the central locking keeps clicking like it would if you press unlock button on keyfob when car is already unlocked. If I lock the car from side panel, the car will.unlock itself!

When I lock car from outside, car sometimes unlocks itself and windows wind down aswell!! I have to disconnect battery and lock car manually at night for security!!

Any suggestions?

scan it for fault codes and post them.

The problem on my MK1 vRS was the soldering inside the door latches. They get cracks in the solder and they start acting up.