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Old 07-03-2001, 08:20 PM
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Join Date: Jan 2000
Location: Pittsburgh, PA, USA
Posts: 86
I have an 83' 500sl (euro). Runs and drives fine but we don't drive it much. I took to work yesterday and everything was fine. I had to run to a client and I put the passenger side window down on the way. When I got to the client I couldn't put the window back up. The power window will work if I open the driver door but not if it is closed, car running or not. Later on the way home I noticed that the speedo, tach, just about all the guages are dead also. The mileage guage works and I understand why but, it looks like the clock works and this doesn't jive with a fuse. I made a cursory check of the fuses with a flashlight (front passenger kickpanel) and they look OK. I will test them with a continuity tester unless there is some obvious problem I am missing. I did a search on the messages and saw a similar situation on a 90' sl but there was no solution.

Any suggestions would be greatly appreciated.

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Old 07-03-2001, 09:42 PM
Registered User
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Even if the fuses show OK, they can be faulty because of the way they contact the block. I always replace the fuses wtih the updated copper ones....
Donnie Drummonds
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Old 07-04-2001, 05:13 PM
Posts: n/a
Whooa Benzmac

Brother of The Benz, benzmac
Updated copper?
Are you referencing the european ceramic tin/lead fuses?
These were put in service by Uncle Adolph(f ?).
This would be the best thing since water cooled engines!Let us all in on this!
Or am I the only one in the dark?
Happy Trails Beep Beep from The Spiderman in Houston!!!
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Old 07-05-2001, 09:03 AM
Registered User
Join Date: Jan 2000
Location: Pittsburgh, PA, USA
Posts: 86

Shortly after I wrote the original message I went down to give the fuses a more thorough examination. What I ended up doing was rotating each one to get a good look at it. After I did this everything is working fine.

I'm in the computer business and know that electronic devices rarely get better on their own so, I was concerned that this problem may reappear at an inopportune time.

So, to be clear, are you suggesting (since I don't know the history of the fuses in this car) that I replace all of the fuses? Has the design of the fuses been updated in general, so that they are readily available or would I have to specify an updated product?

Bare with me this is the only car I've had with this type of fuse.

Thanks again

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Old 07-05-2001, 02:35 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,114
There are two basic problems with the fuses MBs use; they can lose conductivity with the fuse panel contacts, and they can fail without causing a visible gap in the contact material. I believe the advise is to replace all fuses periodically (every 5 years?). You probably spent more scratching your head on this problem than you'll spend replacing all the fuses.

I don't know that there are better or worse fuses of the type MBs use. I got a pack of spare fuses from an auto parts store. The one fuse I replaced has lasted about a year so far.

I'd like to know about fuses that are of better design/quality/longevity than the original fuses.

91 300SE
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