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Mercedes-Benz E550 4MATIC Problems

Failed Digital Heater Control Valve May Cause Poor Heat Output on Mercedes-Benz E550 4MATIC

Problem Description and Possible Solution

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

(5 people reported this problem)

Mercedes-Benz E550 4MATIC Vehicles With This Problem

RepairPal Verified
Average mileage: 84,000 (84,000–84,000)
4 model years affected: 2007, 2008, 2009, 2010
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Brake problem? Or maybe a faulty head gasket cylinder?
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