Reset Rear Climate Control?

[W221copea]

Can anyone help? My rear climate control runs warm to ho air only with zero cooling. If i close the rear off from command I get a heat build up in the tunnel to the rear of the car and over a long period (drive) this heats to "very Warm". Activated this soon cools.

I am guessing the rear needs re-calibration or similar. Any Ideas to avoid another Stealership visit?

 

[Larkone]

A decent code reader will tell you if the flaps controlling temp are working or get it to an Indy and put on a STAR machine for diagnosis

 

[W221copea]

A decent code reader will tell you if the flaps controlling temp are working or get it to an Indy and put on a STAR machine for diagnosis

Any recommendations on a code reader? I have a very basic one but ot will only work on main engine codes and not the deeper complex ones

 

[Larkone]

iCarsoft MB V2.0 - Mercedes, Sprinter & Smart Professional Diagnostic Tool