Problem Description and Possible Solution
Condensation in the heater case may cause a musty odor from the heating, ventilation and AC (HVAC) system after sitting for two hours or more. Our technicians tell us that a cleaner is available for the heater case and the drain system should be checked for debris.
Average mileage: 58,383 (10,000–123,000)
19 people reported this problem
I have noticed when I started using the AC in the Spring now, AC smells like mold. After leaving the fan on high for a few minutes, the smell disappears (and or i'm just getting used to it).
I have begun to notice a distinct smell of antifreeze in the car, especially when climbing mountain ranges. The smell emanates from the vents even if the fan is completely turned off. No solution yet, but I suspect a slight leak in the heater core or the attached hoses. It resulted in extremely lungs for several weeks after an 8 hour road trip.
Strong odor of vinegar in HVAC began while driving in a humid climate. After spraying the special foam deodorizer that A/C repair shops use
(purchased on Amazon.com) into the cabin air intake and then changing the cabin air filter there was a 50% improvement. Then, about a week later I searched under the seats again and discovered the problem. - I recognized a slim take-out tray of left-over chicken with teriyaki vinegar sauce! It had been there for over a month.
A musty odor coming from the air conditioner vents. Dealer offered to check it for a price, we decline and bought a new AC filter from auto parts store, which I will replace myself.