Heating problem
Thread Starter
Member
Joined: Aug 2004
Posts: 135
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From: Sweden
2013 E250CDI BlueEfficiency 4Matic
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?
