The A/C unit in my 2008 CLS is blowing cold in the dash and hot in the rear. I set the rear temp to LO without any change. Help!

 

Best guess without full (correct) vehicle data for diagnosis, it could be:

* Damaged sensors?

* Failed stepper motors, There are eleven of these
Actuator Motor
MB# 203 820 16 42
List price is $134.00 each

* Damaged stepper motor harness
Harness
MB# 211 820 28 13
$85.00

* Damaged primary push button control unit
Operating unit
MB# 219 830 34 85
$ 950.00

* Damaged secondary push button control unit
Operating unit
MB# 211 830 02 85
$ 286.00


For the best diagnostic answer we need
CRITICAL INFORMATION:

Year.
Chassis model.
VIN#

Mercedes Work Information System (WIS) and Electronic Parts Catalog (EPC) give only generic (misleading) information from the simple chassis number (W123, W210, etc), the VIN# unlocks accurate technical + parts data.


Helpful information:

How many miles - kilometers are on the vehicle.

What (generic) geographic location - nearest major city population 100,000 or more should be enough.

Climate and weather can be a major factor in diagnosis.

Thank you.

roy@pelicanparts.com



.