GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Blower running?

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Old Apr 16, 2018 | 07:40 PM
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From: NEW YORK
2011 GL 450
Blower running?

2011 GL 450 ..........So this morning i went to go to work and DEAD Battery! Now it was cold and icy so i get it. Put on trickle and take the wife's car to work. Come home on lunch and jump it with a jump pack and it has been good all day since. After work i go out to my GL and when i open the door i feel the dash window blower going. Not the half hour run after you can get, this is hours after. So i read that it could be the blower resistor?


i unplugged the blower motor to save my battery 😉
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Old Apr 16, 2018 | 09:14 PM
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It is the hvac computer which is part of the blower assembly. They get wet and short out resulting in running all the time.
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Old Apr 16, 2018 | 09:56 PM
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blower resistor?
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Old Apr 16, 2018 | 10:13 PM
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It is not a resistor per se. It is a computer that resides in the blower assembly.
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Old Apr 17, 2018 | 06:35 AM
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Anyone have a MB part number?

maybe a schematic?
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Old Apr 17, 2018 | 07:52 AM
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is it part of the blower motor itself?
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Old Apr 17, 2018 | 10:57 AM
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Originally Posted by Jbchouinard
is it part of the blower motor itself?
yes. that plate on the top has a full blown computer inside. it gets wet, shorts and runs all the time. easy replacement, but it will do it again as there is a design defect. if you want to fix it forever open the cover and pot with hot glue the elements (except capacitors).
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