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Mist coming out of airvents

1K views 2 replies 2 participants last post by  ccomley 
Not a problem unless it happens all the time. It's caused by the a/c cooling incoming air to below its due point. More likely to happen on humid days when the air is carrying more moisture but other combinations of factors can cause it. It's just fog! Water vapour in the air.
 
If you get it a lot, there may be a small leak in the a/c/heating rads. The dealer can pressure test the coolant system easily enough, and if the a/c system is leaking it'll soon stop working so that'll be a clue. :)
 
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