Musty Smell (checked AC)
#16
Racer
#17
Driver School Candidate
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Its more about moisture. AC creates a lot of condensation and when on recirculate, you're just passing it around and recycling it which only amplifies the condition. I believe some on this forum suggest using recirculate only up to the point that you get the interior to your desired temperature and then switching to fresh. If you want to keep the system dry, switch off the AC while keeping the fresh setting on. This would allow some time for your system to dry out before you turned the ignition off for the remainder of the day.
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ravenuer (12-11-23)
#18
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I normally use the fresh air setting for A/C in the summer but after the engine has been stopped then later started again the setting defaults to recirculate. I always then have to push on the fresh air button to reset. It doesn't matter if I am in "AUTO" mode or not. Maybe some very busy individuals are not aware they are always in recirc. mode. I know my wife doesn't.
Last edited by jcg0324; 12-11-23 at 11:19 AM.
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ravenuer (12-11-23)
#19
Driver School Candidate
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I normally use the fresh air setting for A/C in the summer but after the engine has been stopped then later started again the setting defaults to recirculate. I always then have to push on the fresh air button to reset. It doesn't matter if I am in "AUTO" mode or not. Maybe some very busy individuals are not aware they are always in recirc. mode. I know my wife doesn't.
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#20
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Someone earlier in this post mentioned the drain tube from the evaporator. This is the first thing to check to see if it is plugged which will result in the musty smell. To check for a free draining tube, take a drive with AC on. When you are finished with your drive, check for a pool of water on driveway/garage floor usually on passenger side at corner of engine bay and fire wall. This work best if outside temp is warm/summery. I cannot vouch if this will work when temps here are low as its now in central Ontario. A pool of water will indicate a free flowing drain tube and its absence the opposite , subsequently the resultant moldy smell. I have noticed this pool of water on the garage floor from my Lexus NX200T everytime this summer after a 40 minute round trip drive into town.
#21
Racer
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Someone earlier in this post mentioned the drain tube from the evaporator. This is the first thing to check to see if it is plugged which will result in the musty smell. To check for a free draining tube, take a drive with AC on. When you are finished with your drive, check for a pool of water on driveway/garage floor usually on passenger side at corner of engine bay and fire wall. This work best if outside temp is warm/summery. I cannot vouch if this will work when temps here are low as its now in central Ontario. A pool of water will indicate a free flowing drain tube and its absence the opposite , subsequently the resultant moldy smell. I have noticed this pool of water on the garage floor from my Lexus NX200T everytime this summer after a 40 minute round trip drive into town.
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jollick (12-12-23)
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