Mechanics

SPEEDOMETER MALFUNCTIONS

1982 Mercedes Benz 300sd • 164,000 miles

The speedometer on my 82' 300sd shows the wrong speed most of the time.
When car is at stop it points on about 30mph, I noticed it shows some speed (about 25-30 mph) when ignition is turned on, even before engine starts. Thee is no cables going to instrument cluster, just a wire.
How to fix?
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Ezikyel
January 17, 2012.




Our reference material doesn't have any information for your vehicle. Your speedometer needs to be calibrated. This may be possible by simply turning a screw, or it may be something that can only be done at a shop.

Rivermikerat
Jan 17, 2012.


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