Quote:
Originally Posted by Skyline2.0
I may be stating the obvious, but try changing the cabin air filters. 20k miles on the original filters is a good amount of time/distance if they haven't been replaced before. It's a huge PITA to get to compared to many other cars, but do-able with a bit of flexibility and patience. Installing new filters should be much easier than getting the old ones out.
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I think that would only filter out any incoming air/odours from outside, whereas the type of odour mentioned is most likely coming from the heater/cooler matrix where microbes will have become active and produced the stink. Cabin air filters are also a standard service replacement item, although I cannot recall the time interval frequency (the service schedule booklet is locked in my car for the night
!).