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Old 04-17-2003, 08:25 PM
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Join Date: Jun 2002
Location: Connecticut
Posts: 118
Buzzing Combination Relay

When I started my '92 300TE4Matic wagon this afternoon, the 4Matic light on the dash remained on once the engine started, (a question for another time), and I could hear a buzzing sound coming from the fuse box location under the hood. When I got home, I undid the holding screws on the relay box and fusebox cover by the hood hinge and once removed, I could both hear and feel the buzzing item, (an @ 1" x 3" black relay), when the key was turned on with or without the engine running. I then searched my W124 service CD-rom electrical schematics and identified the culprit as the N10 Combination Relay.
Now I am hoping someone can tell me: (1) if I am right about what it is, (2) what the item/relay does and if it's related to the 4Matic dashboard light being on, (3) how long I have until it goes kaput - (can it wait until the MB dealer opens Monday with average town driving?) and finally, how it is removed - I imagine I just pull it up, but I want to be sure. Thanks.


1962 MB 220SEb "Fintail" Sedan
1963 Vespa VNB4T Motor Scooter
1992 MB 300TE4Matic Wagon
1995 Subaru Wagon
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  #2  
Old 04-18-2003, 08:41 PM
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Join Date: Jun 2002
Location: Connecticut
Posts: 118
No need to reply - I figured out the problem/cause: the fuse for the brake lights blew and that caused the relay to have a hissy fit. All fixed now, and the N10 combination relay is working as quietly as a mouse.

1962 MB 220SEb "Fintail" Sedan
1963 Vespa VNB4T Motor Scooter
1992 MB 300TE4Matic Wagon
1995 Subaru Wagon
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