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  #1  
Old 12-27-2003, 01:33 AM
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Join Date: Jun 2001
Posts: 16
Poof! There it is...n't

My 87 190E dash-lights are out and I can't get it back up! I took a corner and a wire must've touched something behind my CD Player, because the dash-lights went out then. I checked the fuse, it's good.
My turn indicators work and so do the warning lights when I start
it up. I checked the bulbs, they're good. Is there someplace else
I can check?
It hard to tell how fast I'm going at night. Any help is appreciated!
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  #2  
Old 12-27-2003, 09:00 AM
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Location: Omaha, NE
Posts: 962
I'm going to ask a dumb question: Any chance the dimmer potentiometer somehow got turned down recently? (We recently had a thread similar to yours and after much discussion about diagnostic issues, turned out to be this ...)
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'93 400E
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  #3  
Old 12-28-2003, 12:11 AM
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Thanks for your quick reply. I did check the dimmer and it's not
that. The dashlights were on when the "incident" happened,
then "poof" they went out.
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  #4  
Old 12-28-2003, 08:48 AM
J.HIDALGO's Avatar
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Join Date: Jul 1999
Location: Jax, FL
Posts: 1,785
If your car is like mine...and probably is.

There is a fuse behind the cluster. It looks like a regular light bulb holder but it is red. The bad new is the only way to check is to take the instrument cluster out and check. Good luck!
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'86 300E
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  #5  
Old 12-29-2003, 08:04 PM
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Location: Seattle
Posts: 596
My potentiometer went poof one night. Had to pull the cluster and installed a new one. Was easily able to resolder the old one, and kept it as a spare.
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David
1986 300E Anthracite + ECodes + MB Mileage Award
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  #6  
Old 12-31-2003, 12:50 AM
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I took the cluster out today, but I didn't see a red fuse holder.
Is it hidden somewhere? If I need to change-out the potentiometer, is this a "dealer only" item? Thanks for the
replys everyone! I feel I'm very close to solving this problem.
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  #7  
Old 01-02-2004, 07:36 PM
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Location: Seattle
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It can be found here and other parts sources.

Dash Light Rheostat
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1986 300E Anthracite + ECodes + MB Mileage Award
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  #8  
Old 01-10-2004, 10:06 PM
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Join Date: Sep 2003
Location: San Francisco
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Davanyo, I'm 99% certain this is your problem:

Have the instrument cluster out (you don't have to take it all the way out, it can just be sitting on the steering column with all the wires still connected). Look at the dash light rheostat, which is the unit right behind the knob that dims the lights. On my car it's beige. This unit has it's own fuse, and it just broke on mine last week. I soldered it back together and it works fine now. Check out your rheostat's fuse and let us know how it looks.
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  #9  
Old 01-14-2004, 05:24 PM
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Posts: 16
I didn't see anything that looks like a fuse, but I did solder the
2 leads to the light-dimmer. I still don't have lights that work.
I'm going to take out the instrument cluster and test the bulbs
with power, instead of just looking at them. Thanks again for the
help!
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