Window Regulator/Door Control Unit Problem

Hello!

Yesterday, I wanted to check the error memory of my door control units because the central locking and rear window lifters weren't working.

After checking the comfort control unit, the front window lifters and the central locking system also stopped working.

He's only getting an error message now, indicating that he can no longer communicate with any of the four doors.



Does anyone have any advice?


Best regards.

Which vehicle? Year of manufacture/model year?

Part number for the comfort control unit?

Foreign radio?

VAG-COM version? Interface (manufacturer)?

Oh, sorry
forgotten


Passat TDI AFN, manufactured in 1998.
I don't know the part numbers for the control unit!
VAG-COM 311.2 Shareware.
I bought this adapter from the online diagnostic shop.


The airbag error could be easily cleared.



Original Beta radio:


Best regards.

As long as you've only read the error memory, any subsequent malfunction would likely be coincidental, unless the control unit is defective, which would then cause these problems.

I haven't done anything else...

I just wanted to know why my rear control units weren't working.


Too bad...

What errors are currently stored?

4 pieces.


For each door, there is no communication with the control units.

Yes, I was already aware of that, but WHICH ones?!

Generally, it would be helpful to check the wiring.
and if necessary, disconnect the comfort control unit from the power supply for about fifteen minutes.
almost a hard reset.

The comfort control unit malfunctions frequently and can only be reset by removing and reinserting the fuse.

A cable break could also be considered as a possible cause of the problem (door guides).

CU.

After resetting the fuse, the driver's side window lifter is working again.


However, the others did not.

I'm going to start measuring things now!


"Thank you."

Best regards.

I would be very surprised if they hadn't included the premium 'Comfort' package. It wouldn't be the first time!