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AC/Heater Blower, no Blow?

Old May 17, 2009 | 04:08 PM
  #1  
Nuru's Avatar
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S350 BT 4MATIC
AC/Heater Blower, no Blow?

I got into the car last night and suddenly the blower for the AC/Htr did not work. I checked all the other controls on the AC control unit and I believe they are working as I can hear the vents moving to different configurations as I ran through the controls. I wonder if the Potentiometer on the AC control unit that controls the blower is on the fritz? I already had one of these control units replaced via warranty, less than 3 months ago, looks like another one. This picked the wrong time to go too, I was caught in a thunderstorm and the windows got really fogged up and it too a while for them to clear-up.

Anyone else had this issue?
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Old May 20, 2009 | 01:10 PM
  #2  
patakka's Avatar
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From: SME- South-America
W210/W202/W164
blower

Maybe not a "technical" answer ,but try to "slap" it with your hand (right under your dashboard).

If he starts running , than it is your blower motor .
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Old May 20, 2009 | 02:49 PM
  #3  
peabers's Avatar
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
I believe the blower is above the front foot well area on the passenger side. It quit on my twice last winter due to ice build-up... gave it the magically slap to resuscitate back to life.
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Old May 20, 2009 | 06:15 PM
  #4  
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Gee took it in before I saw your responses and the dealer is ordering me another Heater/AC control unit, so we will see what happens when it arrives.
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Old May 20, 2009 | 06:44 PM
  #5  
peabers's Avatar
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From: Toronto, ON
2011 E350 4Matic Wagon, 2013 C350 4Matic Sedan
Well, that's a better solution!!
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Old May 20, 2009 | 07:25 PM
  #6  
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Well let's hope so!
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Old May 22, 2009 | 12:04 PM
  #7  
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Well i found out they ordered a blower and a relay as they apparently failed not my AC/HTR control unit - I do like that. As i would have been expecting to have continued issues with that control unit if the current one needed to be replaced.
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