The HVAC is blowing only cold on the drivers' side and hot on the passenger side?

SHANEAHO

MEMBER
2016 FORD FOCUS
1.0L
3 CYL
2WD
AUTOMATIC
130,000 MILES

My dual climate zone HVAC is blowing only cold on drivers' side and hot on the passenger in all vent areas (upper windshield/upper body/floor locations). The passenger side is working as normal. Is this a blend door issue? What is the testing procedure on a dual zone climate control unit?

Thanks!

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,949 POSTS

Yes, this happens when the driver's side temperature blend door actuator has gone bad. here is how to change it out, you want to confirm the problem you should do a CAN scan.
You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is one for about $99.00 if you need it:

https://amzn.to/3ZixY4v

Here is how to change the actuator out in the images below. Please let us know if you need anything else to get the problem fixed.

Images (Click to make bigger)