E-Class Coupe (C207) & Cabrio (A207) 2010-: E250CDI Coupe, E350 Coupe, E350CDI Coupe, E500 Coupe, E550 Coupe [Coupes & Cabriolets]

Rear seat air outlet only blows very hot air!

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Old Apr 20, 2023 | 12:31 AM
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age911's Avatar
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2003 E500
Rear seat air outlet only blows very hot air!

My 2009 E500 coupe has multi-zone air conditioning, including a separate outlet for the rear seat with its own temperature control. I see that the rear unit has two internal ducts leading up to the air outlets. The outlet on the left seems to work as advertised, and will deliver air as per the temperature selected. The outlet on the right however only blows very hot air, regardless of the temperature that's selected. I've also noticed that the right hand side of the console gets very hot, particularly next to where my left knee is (the car is right-hand drive). There are no codes showing on my iCarsoft scanner.
Has anyone else experienced this issue and if so, what did you do to fix it? Thank you!

Last edited by age911; Apr 20, 2023 at 01:06 PM. Reason: Additional info
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Old Apr 20, 2023 | 11:01 AM
  #2  
konigstiger's Avatar
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From: North Scottsdale, AZ
'71 Pinto
Could be servomotor (actuator) or rear operating unit. Have someone pull codes using Xentry (MB diagnostics).
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