Hi
Im working on a 2007 Jetta.
the cabin blower has stopped working.
I've done a lot of online searches, no definitive answer so far.
Sitrep!
The car has ACC
All fuses are ok
From what I see, all the relays are ok too.
There is a constant 12v (even with the ignition off!) at the two larger wires into the 4 wire plug into the fan unit.
The two wire plug into the motor has no volts.
The fan rotates fairly freely
The fan speed knob lights up but the fan doesn't work.
It stopped working after I changed the cam cover gasket!
Its done it before "a few months ago" garage fixed it but no idea what they did.

EDIT: forgot the language question! The display is in German, Ive tried all the suggestions online, pushing various buttons for 3 seconds etc. None worked.
Do I have to plug into the OBDII with something? Is it a DIY fix?

Any suggestions please?
Thanks