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

Blower not working

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Old Mar 6, 2025 | 02:53 PM
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2010 Mercedes GL450
Blower not working

I have a 2010 GL450. Currently the blower motor isn’t working. I replaced the blower motor with a new one. And the blue 15 amp fuse in the engine compartment is intact.

I’m going with the blower motor resistor has failed. However I have no idea where it is to replace it.

or is there something else I should be checking?
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Old Mar 6, 2025 | 03:03 PM
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1998 SL500,2011 GL550,2009 ML350,past 1995 E320 Cabrio ,2005 ML500,2006 ML500,1996 SL500,1972 280SEL
blower motor replacement

Did you replace the controller along with the new blower motor? My experience after repairing a few and replacing a few … the bolt on controller gets corroded from water.
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Old Mar 6, 2025 | 04:19 PM
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2010 Mercedes GL450
Originally Posted by vesiadog
Did you replace the controller along with the new blower motor? My experience after repairing a few and replacing a few … the bolt on controller gets corroded from water.
Are we talking about the circuit board on top of the fan motor. Or something else? And if it’s something else where is this controller located?
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Old Mar 6, 2025 | 08:27 PM
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From: NE OHIO
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board

Originally Posted by TheOcho
Are we talking about the circuit board on top of the fan motor. Or something else? And if it’s something else where is this controller located?
yes board on fan… check the wiring and connectors that plug into the board for corrosion and power
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