AC Blower motor stopped working.
Thread Starter
Junior Member
Joined: Feb 2008
Posts: 47
Likes: 6
2001 ML320, 1998 E430
AC Blower motor stopped working.
Just today, I went to turn on my AC, and the fan doesn't blow at ALL. It was working just fine last night. The compressor clutch is engaging, and the AC system is working, but just no air from the vents. I can feel some cold air waft in through the vents while at speed, but the motor isn't working at all in any speed setting.
I checked the fuse in the engine bay fuse box, and it is intact. I even switched it with a known good fuse, and still the blower doesn't turn on.
What could be the issue?
Please help!!! 
I checked the fuse in the engine bay fuse box, and it is intact. I even switched it with a known good fuse, and still the blower doesn't turn on.
What could be the issue?
Please help!!!
MBWorld Fanatic!
Joined: Feb 2005
Posts: 5,761
Likes: 4
From: North Carolina
98 Black C43 , 12’ ML 350 Blutec
Has it been outside during the fall or spring -leaves or tree pollen? Have you dropped the cabin filter to make sure nothing is jamming the blower motor ?
Newbie
Joined: Jun 2007
Posts: 1
Likes: 0
May be it's abt time to pull out the blower and check the brushes. I had mine changed (DIY) and it all goes well again. Search the forum and you will find the step by step guide to gain access to the blower, its removal & reinstatement. Cost me 19 pound + postage to Sydney.
Thread Starter
Junior Member
Joined: Feb 2008
Posts: 47
Likes: 6
2001 ML320, 1998 E430
I determined that there is 12V supplied to the regulator, and the motor works perfectly when 12V are applied. So I ordered a new regulator. Hopefully that will fix the problem. 
Should arrive tomorrow.
Should arrive tomorrow.
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Junior Member
Joined: Jan 2010
Posts: 20
Likes: 0
From: Chile
1993 300D turbo
Blower motor regulator
Hello,
I am experiencing exactly the same problem.
Can you tell me where is the blower motor regulator?
Thank you,
OldBeaver
1989 300E
I am experiencing exactly the same problem.
Can you tell me where is the blower motor regulator?
Thank you,
OldBeaver
1989 300E
Newbie
Joined: Jun 2011
Posts: 2
Likes: 0
s430
help please abot mine problem
week ago i went to wash car place wash mine car parked in the garage and yesterday want to use and pu the a/c on everythink works fine besides the moter is not blowing any air at all
thanks for help
week ago i went to wash car place wash mine car parked in the garage and yesterday want to use and pu the a/c on everythink works fine besides the moter is not blowing any air at all
thanks for help
Newbie
Joined: Aug 2016
Posts: 4
Likes: 0
99 c280
I'm having a similar issue. No air coming out of my vents. I put in a new blower motor and resistor, dropped the cabin filter and cleaned everything out, fuse is fine. When I turn on the fan speed I can hear a click coming from the blower motor but its not spinning. I'm running out of ideas any suggestions?
Newbie
Joined: May 2011
Posts: 2
Likes: 0
1999 C280
1999 W202 Heating AC Blower Died
My C280’s blower seems to have died. Turned on the fan & soon after black burnt smelling smoke came out into the cabin. I turned it off.
Other than ebay curious where I can get an OEM replacement or something better? Thanks
Other than ebay curious where I can get an OEM replacement or something better? Thanks
