Heating problem
02-13-2017, 03:58 AM
#1
Junior Member
Thread Starter
Heating problem
I have a W220 S500 2003 and my interior heat is very low and sometimes i get no heat in the car at all.
I the HVAC diagnostics when engine heat (no.6) is 80c no.3 and no.4 (left and right heatexchanger) reads out just 3c.
What is my problem?
Duovalve?
The pump in the Duovalve?
I have read out a errorcode A31/1y2 this is for the Duovalve rear heating but that shouldnt affect the front, or should it?
I the HVAC diagnostics when engine heat (no.6) is 80c no.3 and no.4 (left and right heatexchanger) reads out just 3c.
What is my problem?
Duovalve?
The pump in the Duovalve?
I have read out a errorcode A31/1y2 this is for the Duovalve rear heating but that shouldnt affect the front, or should it?
