Blower motor.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
Blower motor.
Having taken care of the coolant leak into the cowl I take her for a test drive. Back out of the driveway with ambient of 82 degrees. Ummm... why is the blower motor slowing down, speeding up... Turn off HVAC and turn back on... Now blower motor starts to growl. We know what this is.
Parts at MB stocks them. Replace as blower motor and controller.
WIS procedure starts with remove glove box. No need. Remove panel over pax side legs. Three small torx fasteners. Unplug electrical connector to lamp over pax feet. Blower motor is held in with five of same size fasteners. You will need a mirror and flashlight to see them. Unplug connector to blower motor. It wiggles right out. Controller attaches to blower motor. Blower motor plugs into controller.
Reassembly is reverse.
Hour of work start to finish.
Works great.
Original blower motor made it eleven years and 156,000 miles. Can’t complain.
Parts at MB stocks them. Replace as blower motor and controller.
WIS procedure starts with remove glove box. No need. Remove panel over pax side legs. Three small torx fasteners. Unplug electrical connector to lamp over pax feet. Blower motor is held in with five of same size fasteners. You will need a mirror and flashlight to see them. Unplug connector to blower motor. It wiggles right out. Controller attaches to blower motor. Blower motor plugs into controller.
Reassembly is reverse.
Hour of work start to finish.
Works great.
Original blower motor made it eleven years and 156,000 miles. Can’t complain.
Senior Member
Joined: Feb 2025
Posts: 265
Likes: 89
From: Seattle
Currently ‘2015 S550 4matic. Previously 03 E320, ‘06 S430, ‘08 S550 4matic
Having taken care of the coolant leak into the cowl I take her for a test drive. Back out of the driveway with ambient of 82 degrees. Ummm... why is the blower motor slowing down, speeding up... Turn off HVAC and turn back on... Now blower motor starts to growl. We know what this is.
Parts at MB stocks them. Replace as blower motor and controller.
WIS procedure starts with remove glove box. No need. Remove panel over pax side legs. Three small torx fasteners. Unplug electrical connector to lamp over pax feet. Blower motor is held in with five of same size fasteners. You will need a mirror and flashlight to see them. Unplug connector to blower motor. It wiggles right out. Controller attaches to blower motor. Blower motor plugs into controller.
Reassembly is reverse.
Hour of work start to finish.
Works great.
Original blower motor made it eleven years and 156,000 miles. Can’t complain.
Parts at MB stocks them. Replace as blower motor and controller.
WIS procedure starts with remove glove box. No need. Remove panel over pax side legs. Three small torx fasteners. Unplug electrical connector to lamp over pax feet. Blower motor is held in with five of same size fasteners. You will need a mirror and flashlight to see them. Unplug connector to blower motor. It wiggles right out. Controller attaches to blower motor. Blower motor plugs into controller.
Reassembly is reverse.
Hour of work start to finish.
Works great.
Original blower motor made it eleven years and 156,000 miles. Can’t complain.
I always love the work arounds that forum members share with the group.
This may be a stupid question but what are “pax side legs”
thanks
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,844
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From: Pacific Northwest
2001 S600 V12 Sold, 2011 Jaguar XFR Sold, 2017 S550 4-Matic, 2018 S63 AMG Sedan
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Joined: Jun 2025
Posts: 784
Likes: 249
From: USA
Having taken care of the coolant leak into the cowl I take her for a test drive. Back out of the driveway with ambient of 82 degrees. Ummm... why is the blower motor slowing down, speeding up... Turn off HVAC and turn back on... Now blower motor starts to growl. We know what this is.
Parts at MB stocks them. Replace as blower motor and controller.
WIS procedure starts with remove glove box. No need. Remove panel over pax side legs. Three small torx fasteners. Unplug electrical connector to lamp over pax feet. Blower motor is held in with five of same size fasteners. You will need a mirror and flashlight to see them. Unplug connector to blower motor. It wiggles right out. Controller attaches to blower motor. Blower motor plugs into controller.
Reassembly is reverse.
Hour of work start to finish.
Works great.
Original blower motor made it eleven years and 156,000 miles. Can’t complain.
Parts at MB stocks them. Replace as blower motor and controller.
WIS procedure starts with remove glove box. No need. Remove panel over pax side legs. Three small torx fasteners. Unplug electrical connector to lamp over pax feet. Blower motor is held in with five of same size fasteners. You will need a mirror and flashlight to see them. Unplug connector to blower motor. It wiggles right out. Controller attaches to blower motor. Blower motor plugs into controller.
Reassembly is reverse.
Hour of work start to finish.
Works great.
Original blower motor made it eleven years and 156,000 miles. Can’t complain.
Senior Member
Joined: Feb 2025
Posts: 265
Likes: 89
From: Seattle
Currently ‘2015 S550 4matic. Previously 03 E320, ‘06 S430, ‘08 S550 4matic
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MBWorld Fanatic!
Joined: Feb 2003
Posts: 1,416
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From: Charlotte, NC
Had: 1987 300TD, Had: 2004 C230 Sport Sedan, Have: 2014 E350 Sport, Have: 2019 S450
I tried to rehab the fan in the wife’s W212 - no joy.
You can’t get to the bearing, and spraying silicone lube at both ends of the shaft silenced the squeaky fan for about 10 minutes.
You can’t get to the bearing, and spraying silicone lube at both ends of the shaft silenced the squeaky fan for about 10 minutes.
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Thread Starter
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
The tray the blower motor mounts to is included with the replacement MB blower motor. Remove one torx fastener that retains blower motor controller from the old blower motor and install new blower motor controller.
One torx driver, mirror and flashlight are only tools needed.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
Removed two more torx screws on old blower motor to verify that brushes and commutator are worn.
Plain bushings that are bearings are sticking to the shaft.
Yup; not serviceable.
Plain bushings that are bearings are sticking to the shaft.
Yup; not serviceable.
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Joined: Jan 2009
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From: NY & FL
MB’s of all kinds.
Did you go with a Genuine MB Part or something you found online? Just curious as I did a blower motor in my 2012 E. I went with a cheap aftermarket online one and it worked great as where MB wanted like $275 for the part.
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,844
Likes: 797
From: Pacific Northwest
2001 S600 V12 Sold, 2011 Jaguar XFR Sold, 2017 S550 4-Matic, 2018 S63 AMG Sedan
If you can easily access the bushings and want to experiment with swapping the bushings, just for kicks and giggles, let me know. I have tons of bearings leftover from my RC days and might have some that will drop right in. Again, just out of curiosity.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
Stamped steel housing shaped around bushings such that they are not coming out. She's not serviceable without going to extra innings. Commutator is worn such that there can't be that much more copper for brushes to conduct electricity to.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
Senior Member
Joined: Feb 2025
Posts: 265
Likes: 89
From: Seattle
Currently ‘2015 S550 4matic. Previously 03 E320, ‘06 S430, ‘08 S550 4matic
Thread Starter
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
