My AC is acting up...when set to auto or manual ,with the AC on ,circulation closed or open,its blowing cool air from the vents on a passenger side and warm air from the driver side. Any idea what the problem is and how to fix it?
It is 2012 TL.
Thanks for any advice...

 

Assuming both passenger and driver is set to something like 20 oC, hit the sync button and see if it fixes it. Wonder if the set temp on either side is different or are they both the same?

 

its all set to the same temp, both to low, sync is on...still blowing cool on passenger side and warm on the driver side...

 

sync is on, both set to the same temp, still blowing cool on passenger side and warm on the driver side....both servo motors redirecting the air flow are working....closing and opening ducts

 

Maybe this? https://www.oemacuraparts.com/oem-parts/acura-motor-assembly-driver-temperature-79160tk4a41/?c=Zz1lbGVjdHJpY2FsLWV4aGF1c3QtaGVhdGVyLWZ1ZWwmcz1 oZWF0ZXItdW5pdCZpPVRLNEFCMTcyMCZyPTE2JmE9YWN1cmEmb z10bC1zZWRhbiZ5PTIwMTMmdD10ZWNoLXNoYXdkJmU9Ni1zcGV lZC1hdXRvbWF0aWM%3D

My 3G had a similar problem - driver side would get heat (without A/C on) passenger side no heat. I think what the dealer replaced was a blend door motor.

 

Problem "solved"...refrigerant was low . It looks like there is a tiny leak somewhere...got to keep an eye on it and eventually locate the leak and eliminate it....Dealer wanted $170 for diagnostic plus refrigerant cost...
$8 bottle of 134a fixed it ...at least for now....

 

Why AC if the passenger side is cold and the driver's is warm? It seems that the driver's temperature mixer has broken.

 

Arek1200 you're right when refrigerant was low is cold just on the right side

 

I had this same problem on my son's 04 Accord. Adding Freon corrected the problem. There are some posts on other forums that have this same problem/solution.