Smelly AC on windshield defrost.

[jayeh]

Hey Guys, I seem to have a nasty smell coming out of my vents intermittently when my windshield defroster is on. If I switch it to windshield then turn the heat up it smells bad for a little while. It's a pretty sharp chemical smell. It doesn't last very long.

The a/c seems to work fine, the fan works on all settings and modes, I can't seem to figure out if anything is the problem.

I just installed a new stereo, but I can't figure out how I could have screwed up anything doing that. I checked the AC section of the FSM and I didn't really go near anything important there.

Does the AC come on automatically when the defroster is turned on in the Yaris?


TIA for any ideas!

[CTScott]

If you do some searching on here for "smell" you will find a ton of threads about the AC stink issue. The AC does come on automatically with the defog mode.

[tk-421]

Like Scott said, there's lots of threads about this issue, and even a couple of fixes. I tried one and it worked great.

[jayeh]

I did try searching first, but AC Smell didn't find anything.Then I used google and found the threads.

Read through the posts. Read through the TSB. Blew out the house and it was clear, stuck a cablie tie up into the ac and it was bone dry. No backup of messy water thankfully.

Cabin air filter is pretty dirty, I'm going to change it out.