Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 06-30-2008, 01:48 PM
Registered User
Join Date: Jul 2005
Location: Wilmington, NC
Posts: 39
Question 01 W210 AC Blower Motor Regulator question

2001 E320 Wagon, all wheel drive


I did a search on 210 blower motor, and found that most who had problems were 1998 and earlier.

My mechanic mentioned that half way through 1998, MB changed the regulator to a different style. He says it's an easy fix, the part is $280 with one hour of labor.

I'm thinking (not that I want to take business away from my mechanic) that if it's so easy, why don't I do it...only thing is, I couldn't find any instructions online and was wondering if anyone could help?

When I do a search, either here or a search engine, the only instructions I find are for "early w210" repairs (with the W140 regulator mod). Nothing for the later cars. I'd hate to get in over my head, but at the same time, I'm usually pretty good at DIY repairs. Any help or advice would be great, thanks for your time!!!


Reply With Quote
Old 06-30-2008, 02:08 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Very simple job, takes a good technician LESS than 1/2 hour.

Removal of PASSENGER underdash panel is required. then you will see the blower motor housing, about 5 screws later the regulator.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
Old 06-30-2008, 02:24 PM
Registered User
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
With a Name like that , you could do the whole job in about 2 min ... with just a Paper Clip........
A Dalton
Reply With Quote
Old 12-30-2008, 12:51 PM
Registered User
Join Date: Dec 2008
Posts: 9
97 E300 D Help! Blower unit running slow

I have a removed the blower fan and bench tested and it runs fast, when

I plug in to car I have 14 volts @ the blue and red wire with fan control set to off.

When I turn fan control on I get 1.3 volts and fan only runs slow?

Help Please

Reply With Quote
Old 12-30-2008, 12:53 PM
Registered User
Join Date: Oct 2005
Posts: 4,263
That sounds like your blower regulator has failed, Denver. Search for the instructions (and part number) to retrofit a W140 regulator in place of yours. That will save you about $500-600 for a new blower motor and mounting plate.
Reply With Quote
Old 12-30-2008, 01:01 PM
Registered User
Join Date: Dec 2008
Posts: 9
Ok I will search for that thanks, any other suggestions?

Reply With Quote
Old 12-30-2008, 02:09 PM
Registered User
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
Matt pretty much covered the options. Buy the entire assembly for ~$800 or get the $200 W140 regulator.

Call Phil and he'll get the right one for you.
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
Reply With Quote
Old 12-30-2008, 02:15 PM
Registered User
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
I would test a little further before condemning the regulator

If you simply run a jumper wire from the blu wire to a ground w/key ON, you should have a full/high fan...If NO , the problem is the blower.
If Yes, then you want a Voltage reading from the yellow wire to ground. That should be a variable voltage fro 2-9 volts, depending on the blower setting at the Control Panel. That sig is the speed trigger for the regulator and if it is not correct , then the problem is not the is the CP..
Most likely is the reg, but at those prices , I would certainly want to test those two circuits forst.
A Dalton
Reply With Quote
Old 12-30-2008, 02:16 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
My '98 has been exibiting some strange behavior lately. Sometimes I hear a high pitched "squeeling" sound from the passenger dashboard area. This is accompanied by the blower speed "revving" up and down as if some invisible person were pressing a throttle on it.

Otherwise, it seems to work fine in auto mode. I can also set the speed manually to any position and it will work.

Is this the same type of problem you guys have experienced and is the regulator on it's way out?

Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63

Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
Old 12-30-2008, 07:30 PM
Registered User
Join Date: Dec 2008
Posts: 9
Thanks Guys, appreciate the help, I will do some more testing, Can anyone tell me if 97 300D has the same fan and regulator as a gas 97 E300? I may have located a whole used assembly.

Reply With Quote
Old 12-30-2008, 07:41 PM
Registered User
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804

Just go to the top of the page and click on Parts ..then look up the two different chassis and see if they list the same part#..then you will know for sure... no guessing that way...........

A Dalton
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 02:42 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page