Fuse nr.5 burns if the car moves forwards!?!?
If parked, you can give gas as much you want, and reversing goes well too, but driving forwards it burns immediatly!?!?
WTF!?! =)
Any ideas..?

 

Specifically what year is your car? What is fuse 5 labled as? I can pull a schematic when I get to the office on monday morning and see what that circuit is responsible for and give you some possible options as to what could be causing your issue.

 

The car is -01.

On the fusebox has only text: "nr5 10A Kl. 15-Versorgung (Steuergeräte)"
It's german and says not so much...

Maybe the engine/gearbox touches some wire when it moves on it's mounts when driving forwards?
Couldn't find any broken wires, so far.

When the fuse nr.5 burns:
the oil level sensor light goes on,
mirrors doesn't work,
outside temperatur goes off,
seat heating goes off,
the fan in the car goes off (the whole A/C screen goes off),
oil temperatur meter goes off

Maybe that was all... =)

I changed the oil level sensor allready, but it didn't help...