I have an 07 MKZ, and the problem just started yesterday. The passenger side seat works fine i will turn on the heat or the cool seat function the lights come on and I can heat the blower running great. All of sudden my driver side does not. When I start the car the driver side heated or cooled light will come on one time, after i press the button to turn it back on it will not ever light back up nor will the blower kick on. Also if I just leave it on it will kick off automatically after about 5 min and the blower runs really weak as if you had the setting on just one light when I have all three lit. Any Ideas? I have checked the fuses and they seem OK. It is just weird to me that the passenger side works fine but the driver does not.
Any help would be great, Been hitting my head against the wall
Sounds like the EATC (electronic automatic temperature control) module is acting up. Not sure of the location, but if you can swap sides for the passenger and drivers side, you can confirm module or sensor.