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  #1  
Old 12-10-2009, 01:07 AM
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Removing instrument cluster from 300SDL...

I'd like to remove the cluster to clean it. Any danger in doing that on the 300SDL - with the SRS system in there I'm a little hesitant... I've done it with no problems on my 300D.

Also, I've seen a photo of a back of such cluster on EBay and it looks quite a bit more complicated than the simple 300D cluster I messed with - looks like some of the plugs may not disconnect easily and also it looks like a ton of wires that will probably need to be labeled or else...

Anything else I should know before I pull it?!

Finally, is there a good plexi-glass cleaner that someone should recommend - my cluster is full of tiny little dots - not sure what they are, I'm guessing it was moisture/condensation, but would like to remove it and get it clean again.
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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
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  #2  
Old 12-10-2009, 01:32 AM
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I don't know about a cleaner...

But I've taken out my instrument cluster numerous times with some ease. The wires I had on my cluster were already [factory maybe] marked. You might wanna be careful on the oil/Fuel level/Temp plug...The polarity pin broke off on mine.
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  #3  
Old 12-10-2009, 04:00 AM
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coat hanger

Quote:
Originally Posted by MercFan View Post
Anything else I should know before I pull it?!

Finally, is there a good plexi-glass cleaner that someone should recommend - my cluster is full of tiny little dots - not sure what they are, I'm guessing it was moisture/condensation, but would like to remove it and get it clean again.
To Pull it take a metal coat hanger and cut the long flat piece on bottom out. cut that into two pieces, Curl one end using needle nose pliers. about one third of the way down on the outside slide them in and twist until you feel them grab the cluster. GENTLY tug a little at a time one side then the other it will pop out.
Everythung on the sdl dash is electronic so it will all unplug. I have had mine out about 5 times. TAKE YOUR TIME. It just sits in there.
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Last edited by Brian Carlton; 12-10-2009 at 08:07 AM.
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  #4  
Old 12-10-2009, 08:04 AM
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On my car I just removed the trim around the headlight switch, reached up, and pushed the cluster out.

-Jason
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1991 350SDL. 230,000 miles (new motor @ 150,000).

2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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  #5  
Old 12-10-2009, 09:46 AM
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Quote:
Originally Posted by compu_85 View Post
On my car I just removed the trim around the headlight switch, reached up, and pushed the cluster out.
No problems disconnecting the jungle of wires back there?!
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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
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  #6  
Old 12-10-2009, 10:13 AM
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Waiting for his Model 3..
 
Join Date: May 2008
Location: Springfield VA
Posts: 5,174
Nope. All the single lights are numberd too, so they're easy to put back.

-Jason
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000).

2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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  #7  
Old 12-10-2009, 11:06 AM
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No fundamenal difference between a W123 and a W126.
Same operation, same design.

Even easier, though. No mechanical oil ine or speedo cable....

Jim
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  #8  
Old 12-10-2009, 05:10 PM
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Location: Austin TX
Posts: 352
Sorry to high jack the post. But I have a 87 SDL and the odometer doesn't work anymore. It doesn't even turn. Do you know where I can purchase that small plastic peg that goes in the back? I'm thinking it went out and will need to be replaced.
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98 Jetta TDI with grease car kit + veg-therm (totaled)
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  #9  
Old 01-02-2010, 10:56 PM
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Finally pulled out the SDL's instrument cluster for cleaning - had some kind of spots everywhere behind the plexi glass - finally got it all cleaned out the way I like...

I remember that there was some type of light grinding noise at idle (or minimal speeds) coming from behind the instrument cluster and I've assumed in the past that it's probably the speedo cable that needs to be lubed... now that I see that it's electronic I know that this isn't it....

So, what else could be making the low grinding noises back there that I should investigate while the whole cluster is out?! Ideas welcome...

James
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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
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