Question about 2007 Mercedes-Benz C230 Sedan
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Posted on Jan 02, 2017
There is a valve to control the coolant to the heater core. You can identify this by looking at the hose connected to the coolant path. When it is bad it didn't close so hot coolant keeps flowing to your heater core when the AC is on causing hot air. It needs to be replace. Don't be fool by checking the resistance of the terminals since it may tell you the solenoid is still good. Why, since the valve is stuck inside, so even the solenoid is working but it could not pull the valve. Good luck.
Posted on Mar 14, 2010
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