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  #1  
Old 12-11-2013, 06:05 PM
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Join Date: Dec 2013
Location: Atlanta GA
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95 W124 E300D breaklight/headlight/fuel gauge issue

So my problem started off with the fuel gauge dropping when the breaks were applied then the fuel gauge started moving with the left turn blinker and now the fuel gauge doesn't work at all when the headlights are on. This I could live with but now with the headlights on and the breaks applied the reverse lights and the license plate lights light up but no break lights and if I put the blinker on with the headlights on all the lights in the back blink. Does this sound like a ground issue or is this a sign that the wiring harness? Any help on were to start will be much appreciated

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  #2  
Old 12-11-2013, 07:03 PM
jay_bob's Avatar
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Bad ground.

Check the ground points in the trunk area.
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both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
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  #3  
Old 12-11-2013, 09:24 PM
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Can it also be the headlight relay which is under the fuse box?
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  #4  
Old 12-12-2013, 07:45 AM
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Thanks for the suggestions both sound better than the wiring harness. Please keep the suggestions coming
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  #5  
Old 12-12-2013, 01:16 PM
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Location: Eastern TN
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Umm... the way this works is you try the suggestions already made, report the results then request more ideas if necessary. For now, check the tail light cluster grounds and try the brakes with the headlight relay removed.

Sixto
87 300D
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  #6  
Old 12-13-2013, 01:38 PM
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Bad ground on the drivers side. So thanks for the help!!

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