AC blower comes and goes
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Junior Member
Joined: Mar 2006
Posts: 15
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AC blower comes and goes
It is hot in Dallas and the Ac unit in my 2003 E500 started a new game. The Blower stops blowing air out but showing the fan speed/bar disply to be working. I have turned the system off and back to on and it works. The air is cold as it should be. A few weeks ago, I had a chirping noise from the blower and I took it out to lubricate the moving parts. Now the chirping is gone but blower stops and go. Please share your thoughts as if I need to replace the blower fan or the regulator or both? Thanks in advance.
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,017
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From: Ft. Lauderdale Area, USA
2015 ML 350
You need a blower fan regulator (module) it installs under the dash passenger side. You kan keep the blower running in the mean time if you manually keep it from entering the MAX blower speed. (No AUTO). When it enters MAX (fan speed as in DEF or MAX settings) the unit quits blowing sometimes.
Turning off the car for a long while will reset it but its a known problem in your car. (Had it in my '04 way back when when no one had heard of it... but there is a fix)
Turning off the car for a long while will reset it but its a known problem in your car. (Had it in my '04 way back when when no one had heard of it... but there is a fix)
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,636
From: North Scottsdale, AZ
'71 Pinto
https://mbworld.org/forums/3888972-post13.html
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Thread Starter
Junior Member
Joined: Mar 2006
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It is logical to replace them both, I agree. I started looking at few online MBZ part stors today and they all offer a a same brand OE with different part #s. is there a difference between parts? The prices are almost the same.
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Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,636
From: North Scottsdale, AZ
'71 Pinto
2308210251 installed at production, replaced by 2308216351, replaced again to current 2308216451 - replacement usually indicates modification.
Newbie
Joined: Aug 2012
Posts: 8
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From: USA
96 w210, 03 e500
regulator 2308216451 for $59.99
Now this regulator sells much cheaper, for $59.99 No modifications required, very easy to replace. 
http://www.ebay.com/itm/171069925631?item=171069925631&viewitem=&vxp=mtr.
http://www.ebay.com/itm/171069925631?item=171069925631&viewitem=&vxp=mtr.
