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[Tutorial] Loud Blower Motor Fix

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Old Mar 27, 2023 | 05:07 PM
  #1  
dermotkirk9's Avatar
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2009 C220 Sport AMG
[Tutorial] Loud Blower Motor Fix

Hi

so I recently had the issue of a loud blower motor that gave off a constant squeal on lower speeds

This is how to fix it without any replacement parts and only a few tools


Panel under dashboard lowered from passenger footwell to gain access to the blower motor


Bottom view of the blower motor assembly


Use a sharp drill bit and only drill the plastic housing! It is around 3mm thick plastic


Finally pack some heavy duty grease into the hole you drilled previously & cap it off with a rubber grommet

enjoy your nice quiet fan

hope this helps some of you guys
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Old Mar 28, 2023 | 08:50 AM
  #2  
W205C43PFL's Avatar
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Originally Posted by dermotkirk9
Hi

so I recently had the issue of a loud blower motor that gave off a constant squeal on lower speeds

This is how to fix it without any replacement parts and only a few tools


Panel under dashboard lowered from passenger footwell to gain access to the blower motor


Bottom view of the blower motor assembly


Use a sharp drill bit and only drill the plastic housing! It is around 3mm thick plastic


Finally pack some heavy duty grease into the hole you drilled previously & cap it off with a rubber grommet

enjoy your nice quiet fan

hope this helps some of you guys
The idea is great, thanks for sharing. Hope it holds.
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Old Mar 28, 2023 | 09:08 AM
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2009 C220 Sport AMG
Originally Posted by W205C43PFL
The idea is great, thanks for sharing. Hope it holds.
I am driving the car today after doing this and the fan is completely silent, but definitely give it a try and report your findings
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Old Apr 4, 2023 | 09:47 PM
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W205C43PFL's Avatar
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Originally Posted by dermotkirk9
I am driving the car today after doing this and the fan is completely silent, but definitely give it a try and report your findings
Thanks OP, really appreciate you posting this and your update on it post rectifying it,
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Old Apr 5, 2023 | 06:47 AM
  #5  
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2009 MB C300 Sport 4matic
A 5 or 10 cc syringe might make the grease packing part easier..;.
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Old Apr 5, 2023 | 01:32 PM
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Great post! This is the kind of thing we’ll need to keep these cars running as they age and parts are no longer made. The W163 SUVs (1998-2005) are running into parts availability issues taking them out of service now.

BTW — What was that red grease that you used? I’m considering wheel bearing or CV joint grease on mine.
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Old Apr 5, 2023 | 02:43 PM
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2020 C300, 2013 C250, 2000 Boxster S
Originally Posted by Odd Piggy
Great post! This is the kind of thing we’ll need to keep these cars running as they age and parts are no longer made. The W163 SUVs (1998-2005) are running into parts availability issues taking them out of service now.

BTW — What was that red grease that you used? I’m considering wheel bearing or CV joint grease on mine.
Excellent maintenance post! I plan to use this when I get around to the intermittent squeaking in cold weather:

https://www.fcpeuro.com/products/cv-...red-line-80401

I bought it to repack the rear wheel bearings on the Boxster.
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