Hello

I have a 1987 300E.

This evening when I started the car I heard a buzzing noise coming from the dash area. It ended up being a buzzing relay that is in the relay box that is attached to the fuse box under the hood near the master cylinder.

I drove off with the bussing sound for a quick trip to the store down the street. I noticed that whenever I would use the turn signal the buzzing would go away. I also noticed that the fuel, water temp and oil pressure gauges did not work.

I drove home and removed the cover to the relay box and found the relay that was making all the noise. Its part number 201 821 00 47

I did a search and was surprised that I couldn't find one available besides a used one on ebay. There were a couple of other sources however the delivery was almost a month (most likely coming from china?)

Anyone know were I can get one?

I would maybe if voltage right and amps, use standard relays save plugin from old one and wire new in.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

sounds like a bad ground to me. maybe low voltage. i've never replaced that relay in an mb in 25 yrs of working on them.

Believe Mercedes updated the part number around 2014. New part number is 201-821-02-47. Hope this helps.

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2023 Ram 1500
1987 300TD
2002 ML 320
2001 Chevy Suburban
2006 S430 (gone and trying to forget)
1985 300TD (returned to father)
2007 GL320 CDI (sold to brother)
1995 E320 (sold)
1991 500SL (parted out)
1995 E300D (RIP)
1991 300D (RIP)
1995 E320 Wagon (sold)
1992 300TE (sold)
1988 300CE (sold)
1994 E320 (sold)
1995 E300D (sold)
1978 300D (RIP)
1987 260E (sold)
1992 400E (parted out)
1989 300E (parted out)