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First you should pull codes, if the actuators are bad I believe it will show a code. Also make sure your freon level is correct. Another thing you can try is resetting the actuators by pulling the hvac fuse for 60 seconds.
The codes will point to a right or left actuator (or both) out of range, but there's no reason not to do both while you are in there. Will save headaches later.
First you should pull codes, if the actuators are bad I believe it will show a code. Also make sure your freon level is correct. Another thing you can try is resetting the actuators by pulling the hvac fuse for 60 seconds.
Passenger side floor board. Pull the fuse box cover, read the diagram under the cover and find the hvac fuse and pull it out. Should be a 10a fuse but I don't exactly remember.
If resetting it don't work, replace both actuators unless you're young and just need some exercise. Some say they can replace the drivers side without removing the dash pad. After having mine off there is no way I'd even try that. You can buy the dorman part off of ebay much cheaper than an auto parts store. Many times 1/2 so you can get them both for what most auto places want for one. Make sure you get the right part, because the duel zone takes a different part number. They look the same, but they are not. 604-106 is the part number, just search for it on ebay.
If resetting it don't work, replace both actuators unless you're young and just need some exercise. Some say they can replace the drivers side without removing the dash pad. After having mine off there is no way I'd even try that. You can buy the dorman part off of ebay much cheaper than an auto parts store. Many times 1/2 so you can get them both for what most auto places want for one. Make sure you get the right part, because the duel zone takes a different part number. They look the same, but they are not. 604-106 is the part number, just search for it on ebay.
Just sharing my recent issue.
I had this happen recently but no codes.
I just got the car in December.
My first issue was the external sensor so I replaced that. Still had the same issue. I had to pull the fuse multiple times to get the logic reset. While the temp is the same on both side the car now it still seems cold unless I crank up the temp to like 78-80 on the automatic climate control. So now I am leaning towards the internal sensor.
I experienced the same thing but in reverse. The passenger side was cold but driver side was not. The mechanic checked coolant and found it was slightly below normal. Added more coolant and everything went back to normal.
I experienced the same thing but in reverse. The passenger side was cold but driver side was not. The mechanic checked coolant and found it was slightly below normal. Added more coolant and everything went back to normal.
Go figure.
Here's my problem.....
Driver side only blows cold will not blow hot even when I change the temp. Passenger side was working and now only blows hot even when I change temp.
And yes my car has the dual zone control unit.
Last edited by Sinister-one; 02-12-2016 at 02:13 PM.
Okay so both actuators, driver and passenger side are the unit, part number 604-106 ??
If so, I'm all over this !!
And thanks again for the help !
Yep, they're the same. Your welcome. Take your time doing this, there is a thread on here some place that explains what you have to do to replace them. It may be in the tech section. Search blend doors.
Driver side only blows cold will not blow hot even when I change the temp. Passenger side was working and now only blows hot even when I change temp.
And yes my car has the dual zone control unit.
Now you need both. This happened to me in late November just as I started using the heater. In trying to re-initialize the driver side, the passenger side broke too.
It is possible to change the driver side from the footwell - the passenger side requires the dashpad to come off. Plan about 3-4 hours to pull and about the same to re-install. The actual actuators require about 30 seconds to change.
Now you need both. This happened to me in late November just as I started using the heater. In trying to re-initialize the driver side, the passenger side broke too.
It is possible to change the driver side from the footwell - the passenger side requires the dashpad to come off. Plan about 3-4 hours to pull and about the same to re-install. The actual actuators require about 30 seconds to change.
I've had the dashpad off in the past on my previous C5.... it's quite a bit of work and a lot of screws.
02-11-2016, 12:54 PM
AC blows cold on driver side and hot on passenger side - HELP !
