E-Class (W211) 2003-2009

Problem with 4 Zone Climate Control

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Old Aug 1, 2004 | 08:19 PM
  #1  
michael10128's Avatar
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From: New Jersey USA
2014 E350 4Matic/2011 E350 4matic / 2003 E500 /2000 CLK 430
Problem with 4 Zone Climate Control

Strange thing happened this weekend
Hot air blowing out of the rear passenger vents when AC is on

My AC was on high in the front, very cool, however there was very hot air blowing out of the rear seat vents - I checked to make sure the temperature was set at Low and it was...so my rear passengers got to enjoy hot air blown at them, i eventually shut the vents in the rear.

ANYONE have this problem??
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Old Aug 1, 2004 | 11:20 PM
  #2  
alewifebp's Avatar
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From: Northern NJ
2014 BMW 550i
Yes, this exact same problem has happened a few times so far. After I turn the car off and back on later it works fine. During the winter months, I had the opposite happen a few times, and that was cold air coming out of the front vents.
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Old Oct 31, 2009 | 05:54 PM
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From: Palm Coast, Florida
2019 E-450 Wagon
Old thread, but same problem:

Just noticed the rear vents blowing very hot air with the AC on full blast and cold air coming from the front vents.

Tried all combinations of settings and button pushing, no change.
Same crazy scenario repeated next day and the day after..

Does anybody have a fix? (Besides a sledgehammer)
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Old Oct 31, 2009 | 06:56 PM
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'71 Pinto
https://mbworld.org/forums/e-class-w...rol-valve.html
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Old Oct 31, 2009 | 07:45 PM
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From: Palm Coast, Florida
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Excellent Mr. Tiger: I am roaring to tear into the car and do the job myself, but right now sitting in a hotel room in Lima, Peru and cooling my jets.

My dog will also thank you as I did not realize the hot air was blowing "back there" until a few days ago...

Name your brand of beer or your preference of sweet stuff, and I will have it delivered to the tiger-den
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