E-Class (W211) 2003-2009

W211 E320 blow hot air all the time

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Old 08-02-2021, 10:47 PM
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2003 E320, 1990 Honda Accord - Sold, 1991 Honda Accord, 1992 Audi 100S - Sold
W211 E320 blow hot air all the time

My 2003 E320 start to blow hot air all the time even the temperature gauge set to coolest and air conditioning turn on or off. At year 2009, the heater control valve had changed once time due to blew cool air only. Is this situation is due to the heater control valve again?

Thanks,

Eric
Old 08-04-2021, 01:03 PM
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1999 E300TD
could be however I would put a set of gauges on the car to check the refrig side

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