vinkodex.B5: water ingress at the pollen filter housing, wet comfort control unit
It does not show up on every car. Check before you buy.
expensive
severity
not available
mileage
2
sources
2 sources. Forums, videos or complaints.
The fault
How you spot it
Leaves and debris block the drains of the water collector under the windscreen. The standing water runs in through the lid of the pollen filter housing and its perished seal, into the cabin, under the carpet. That is where the comfort electronics control unit sits, and it corrodes when wet: the central locking, the window regulators, the interior lighting, the mirrors and the fuel flap release start dropping out, typically intermittently and after wet weather. The control unit is the expensive part: whoever replaces only the unit but does not clean the drain destroys the new one too.
Which model
Who it affects
The card opens the generation, the engine or the transmission.
Generations and models
1 generations.
Volkswagen
B5
Passat
Volkswagen Passat B5
1997–2004
vinkodex.Checklist
B5: water ingress at the pollen filter housing, wet comfort control unit
What you would check for this fault. Take it to the car.
Before you buy
Checklist
What you tick stays on this device only.
Sources
How we know
forum sources only. That does not prove the car you are looking at has it.
Information, not an expert opinion
We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.
- A fault on the list does not mean the car you are looking at has it.
- A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
- You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.