Hello

Background:

My 2004 vRS gets little use these days and then only short journeys. First really cold morning last week, flat battery. Charged battery - back in business. Went to drive off and realised my rear passenger side window was fully down. Odd as I hadn't opened it (in fact, I rarely open either back windows). Now can't close the window. (All other windows / switches working normally)

 

Symptoms:

Pressing driver's door switch to open or close LH rear window does nothing. No clicks.

Pressing rear door switch to close window. Nothing. No clicks.

Pressing rear door switch to open window (already fully open), hear the relay click (actually it double clicks).

 

What I know so far:

The most relevant fault code suggests it's a short circuit in the driver's door switch. Another mentions "Implausible signal". I've removed the switch and taken it apart. It appears to be a basic mechanical unit that connects the various pathways on a simple printed circuit board depending upon the switch press. Off hand, I can't see anything wrong with it. Maybe it's not the switch itself but a wiring problem or something in one of the other plugs that things pass through in the driver's door?

 

If I could just get the window to close, I'd be happy with that for the time being. Any tricks to do that?

 

Anyway, any help, pointers or techniques to trace the fault would be greatly appreciated.

 

I hope some of you clever people out there can give me some clues.

 

Thanks.

check the cable harness from the driver door to the A pillar. look for any wear/splits/ crushing etc. disconnect its connectors and check the pins for corrosion. if you have a multi meter continuity check all the wires.

repeat this on the harness going to the door with the open window.

 

check the relay itself in case its sticking.

 

and then... get the door card off, and apply 12v directly to the rear window motor. if it spins that narrows you fault options,and you can close the window. if it doesnt the motor is failed.

 

Thanks - appreciated!