Hi guys recently acquired a 2004 audi a4 cab but had a few days of head scratching business trying to come to a conclusion on a fault, now I require a few helping heads to help me out.
the car has no faultts whatsoever other than the known ecu in the multitronic fault but totally unrelated, full vcds scan reveals can bus faults in HVAC, the roof, central convenience and central electrics the fault code is 01336- data bus for comfort system 80-00 - single wire operation, my headache is there is no symptoms with the car. I have had the control unit out in the passenger floor but no signs of water or corrosion checked the wires in the door loom and all look ok.
if when control unit failed say the drivers door would it shut down all other units linked in the can system I.e passenger side as these two also show faults aswell as rear left and rear right even though it's a convertible,
if this makes sense any info would be great thanks