Hi, I've just bought a 2003 l322 and its a great car. There are a few bits that need doing on it and I'll provably be asking a few more questions in the coming months. But my first thing to fix is the passenger door lock. The door will only actually unlock about 1/3 tines when the test of the car is unlocked. I can see the door pin try and go uo when I unlock, but it just doesn't manage it some times. Anyone got any ideas? Is it a knackered pump or perhaps just something that needs some lubricant? Tempted to squeeze some wd40 down the pin to aee if that frees anything, but wondered if anyone had any other ideas?