Why is the A/C hot air on the driver's side and cold air on the passenger's side?

DSUA049

MEMBER
2014 FORD FUSION
2.0L
4 CYL
TURBO
2WD
AUTOMATIC
85,000 MILES

Recently, my car’s battery drained, and we boosted the car back up. After that I noticed that when my A/C was turned on the driver side vent and the rear passenger vents blew hot air while the front passenger vents blew cold air. I took it to a mechanic who said that my R134a level was low, so they refilled it. It maybe lasted 2 days and the A/C went back to the hot/cold air coming out. I was told it could be the HVAC actuator, I changed the one behind the radio on the passenger side, the problem still remained. So, I thought it could be the actuator behind the steering wheel, so I changed that one too, but still have the same problem. If anyone here happens to know or has a slight idea as to what my problem could be please help me out. Thank you!

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

I found the location of the left side blend door actuator to make sure you replaced the correct unit. There doesn't seem to be an initialization procedure, so you don't need to worry about that, but I have seen people reset the system by removing the battery cable overnight. Here is the location of the blend door actuator. Check out the diagrams (below). Please let us know what happens.

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