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2018 Defroster Runs Constantly

nashman50

New member
6
0
1
Buick Ownership
2018 Regal Sportback Preferred I
Hi Everyone,

I am having trouble with my 2018 Sportback. Even with the heat set only on floor, the defroster runs constantly. If I turn off the floor setting, it only blows out of the defroster, but not the other way around. Is this a setting for the humidity sensor? I wouldn't think it would be that as it has been dry here lately.

Does anyone else have this issue?
 

Jmlo96

Member
91
62
18
Pittsburgh
Buick Ownership
19 Regal TourX Essence
I think these cars always blow a small amount of air from the defroster vents (at least when set to floor mode.) My 2019 TourX has a similar behavior to what you are describing. I noticed it sounds like the defroster is on but it's blowing out the floor vents.
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nashman50

New member
6
0
1
Buick Ownership
2018 Regal Sportback Preferred I
It seems to blow the same amount of air from the defroster if the button is pushed or not. It is still within the warranty period so I scheduled an appointment to have it diagnosed.
 
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