I'm a little bit confused here. If this is mold build-up in my vents, shouldn't that be checked on? Should I take it to the dealer or is there some DIY method (like cranking the heater at max and letting it run for like 20 mins LOL)?
It's only been happening since the last 2-3 days. Before then I could turn it on without any issue or smell...
What do you guys mean by air-recirculation button, would that make it musty?