I really love the new filter I got. Its more expensive than OEM though. The thing about the new filter is it has both carbon and a polyphenol coating. I noticed that when my engine shuts down during start/stop that the air con doesnt have a wet dog smell anymore.
The second replacement filter was a Mann activated charcoal filter which does seem to help keep the interior smelling even fresher.
What finally seemed to help was replacing the cabin air filter (did myself in 3/2017) with one of the MANN charcoal filters (FP26 009 "Frecious Plus"). Perhaps this was just coincidental, but we have not experienced the problem since changing the filter.
You can get the engine and cabin filters on Amazon and save yourself $150+ dollars. Look up Mann filters (which is the same thing VW uses) for you year.
Might be a silly question, but have you considered building it to have a Mann CU 2038 fit it? Have been running those in my \"stock\" cabin air filter since the original filter is NLA.
I checked to make sure the cabin filter wasn't restricted (Mann filter less than a year old).
This is one of those things I do once a year. I live on dirt roads and 12-15K is about all I can take before needing to do a change.
Purchased OEM VW Charcoal Lined Cabin Filter / Fresh Air Filter and OEM VW engine Air Filter for $40 from ECS Tuning. Installed at 102k miles.
My AC smells like wet dog for the first 30 seconds I run it. Wonder if changing the cabin filter would help.
I have changed cabin filters multiple times, and cleaned the evaporator with foam. I first used Klima cleaner, then I tried DWD2. I can not get this problem to go away.
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