Question about Mercedes-Benz 300-Class

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All the gauges stopped working on a 1989 mercedes 300sel and I suspect a relay that is bussing. The part # is 201-821-00-47. The relay is 3 1nches long by 1 1/4 in wide by 2 1/4 in tall.

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  • rovers922 Jan 19, 2009

    Same prob 89 TE wagon. Sounds like a relay just to the lower left of the dash buzzing. Gauges inop: fuel, temp, oil press, tach. Clock still works, where is that relay of which you speak? Sounds like that is bad, it happened after the coldest night of the year (here in SE PA), maybe froze up?....any help would be great!

    Driving Blind in Philly


  • Anonymous Apr 01, 2009

    I have a 500 sl and all the gauges just stopped working. What fuses should I check.

  • malcolm305 Apr 09, 2009

    91 S300 Gauges inoperable fuel, temp, oil press, tach. Clock still works, any assistance?

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Happened to me the same thing taday on a 1988 190E, just noticed that brake lamps and reverse lamps didn´t work either, fuse was OK but I replaced it anyway and now everything is working fine

Posted on Jan 11, 2009

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1991 300 SE dash guages except clock and economy meter are all controlled by 2018210047 relay located in the main fuse/relay panel under the hood in front of the driver. It is 3" by 1" and sits beside the longer DTR headlamp control relay. Normally noted as "B" on the mercedes pictorial legend of the main fuse relay box. Headlamp and DTR box is noted as 'A".

Posted on Apr 30, 2011

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