Question1983 Mercedes 300D: My fuel, temp, oil pressure guages as well as my tach (speedometer OK) do not work unless. . . . you pull on the upper right side of the plexiglass cover. The cover is pulled like you are trying to remove it by pulling on that upper right hand corner. It seems that by pulling on the upper right hand corner, it exerts pressure down on the lower left and side, thus correcting the problem. This was discovered by the previous owner. I'm thinking it is a grounding problem. What say you? Are the gadges easy to get at? It this a do it yourselfer or do I need technical assistance?
AnswerRemove the instrument cluster, it sounds like a damaged circuit board.
no dash lights, flaky tach, temp and fuel gauge not working...what gives?
http://www.mercedesshop.com/shopforum/showthread.php?t=141148
How to remove instrument cluster.
http://www.mercedesshop.com/shopforum/showthread.php?p=176202#post176202
Lets' Pull the Instrument Cluster!
http://www.mercedesshop.com/shopforum/showthread.php?p=447830#post447830
Hazard light switch cleaning
http://www.mercedesshop.com/shopforum/showthread.php?p=700225#post700225
electrical problems or gremlins
http://www.mercedesshop.com/shopforum/showthread.php?p=813923#post813923