Failed Digital Heater Control Valve May Cause Poor Heat Output on Mercedes-Benz E55 AMG

A failed digital heater control valve can cause a lack of heat output from the climate control system.

RepairPal Verified
Average mileage: 60,000 (50,000–70,000)
4 model years affected: 2003, 2004, 2005, 2006
7 people reported this problem
2 people shared problem details
No heat output from climate control system. Replacing the Digital Heater Control Valve solved the problem. It turned out the the original valve was completely frozen, it could even be manually manipulated to open.
Over $ 600 cost to replace. Can air works fine but no heat......
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