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Old 03-28-2006, 03:39 AM
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Join Date: Mar 2006
Posts: 84
1989 300E Instrument Cluster Problems

My 89 300E instrument cluster is not working. When I start the car the gauges are not working (ex: speedo, rpm, oil pressure, etc...) none of the warning lights work either. The only thing that works on the cluster are the signal and hazard lights. I checked all the fuses and they are in working order.

Please help!!!


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Old 03-28-2006, 09:53 AM
Ta ra ra boom de ay
Join Date: Jun 2004
Location: Pittsburgh
Posts: 1,915
change out fuse #5 anyway...(8amp white)

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
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Old 03-28-2006, 03:10 PM
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Join Date: Mar 2006
Posts: 84
I changed the fuses and still nothing. Could it be anything else?

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Old 03-28-2006, 04:04 PM
Mike Murrell's Avatar
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Join Date: Feb 2000
Posts: 2,580
recheck seating on #5 fuse and all others in the box.

there's also a rheostat(trip meter reset) I believe. I found a post in the archives that pointed to a blown rheostat.
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
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Old 03-28-2006, 07:03 PM
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Join Date: Dec 2000
Location: AL
Posts: 1,219
Be SURE the fuses are OK.

Mine did the same thing once. I thought the fuses were fine, too. However, one fuse looked ok but it was actually physically broken...a hairline crack.

I would say which fuse but I don't remember.
2012 E350
2006 Callaway SC560
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Old 08-26-2006, 02:40 PM
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Join Date: Aug 2002
Posts: 56
And another happy "Fuse 5" replacer

Just adding to this thead that I too had the "gauges out and funny buzzing from behind panel except when turn signal in use" problem on my 1986 300E, and I too had visually examined all my fuses very closely in good light and thought they were all OK, but changing number 5 (which fell apart after removal) solved my problem.
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Old 08-26-2006, 02:48 PM
Ron in SC's Avatar
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Join Date: Aug 2003
Location: Charleston, SC
Posts: 1,095
Check post #5 in thread in link, it may help.

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