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  #1  
Old 06-17-2009, 03:24 AM
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Combination Relay(s)

Can anybody tell me with specifics what the two SMALL relays do by the box? They are white
I am reading that they have some elements that affect window regulators, fuel pump, o2 sensor, sunroof, kickdown and more!

I need to pull these buggers apart and check for potential problems. Does anybody know which one's (I believe there are two IIRC) control what?

EDIT: M103/w124

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Old 06-17-2009, 06:14 AM
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I'm willing to try, but don't know which relays you're referring to. By "box" do you mean the main fuse/relay box on the left side firewall? In the W124/M103, there aren't any white relays in that box, only small aluminum cubes (as many as 6 of them). You must be referring to some other box.
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1988 California version 260E (W124)
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Owned since new and still going strong and smooth
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Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

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  #3  
Old 06-17-2009, 11:07 AM
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psycho,

This is what it says for your car at ********:

http://www.**********.com/search/product.aspx?sid=5mtnntqddgnaoqbdnzcjj055&makeid=800016@Mercedes&modelid=1194364@300TE&year=1988&cid=18@Electrical%20%26%20Vacuum&gid=3608@Multi-Purpose%20Relay/Combination%20Relay
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Old 06-17-2009, 12:08 PM
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Cal Learner: Yes those aluminum boxes, sorry.

OZC36: Thats where I saw the information, but it just says "etc"...I wanted to know "exactly" what the list of functions are. I wonder if a finicky connection in there could be causing a slow surging idle.
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  #5  
Old 06-17-2009, 04:04 PM
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If you have the FSM, the description is in Group 24 under "Relays and Control Modules" at page 3. The empty D location is for headlight washer relay (which my car doesn't have) and the empty G location is for a relay only used in Coupes.
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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't
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  #6  
Old 06-17-2009, 08:18 PM
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^ That's awesome thanks. Guess there is not one for the O2 sensors and such as that site states?

I will for sure pull that window relay though as I have problems in both my cars with the rear windows not working.
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  #7  
Old 06-17-2009, 11:56 PM
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try replacing fuse #2....it worked for me
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  #8  
Old 06-21-2009, 09:39 AM
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Quote:
Originally Posted by ps2cho View Post
...I will for sure pull that window relay though as I have problems in both my cars with the rear windows not working.
If any of the power windows at all are working, the relay is OK.

__________________
1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't

Last edited by Cal Learner; 06-29-2009 at 07:10 AM.
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