Tons of info on it in this forum. Very common problem. I even contacted VDO about it, no luck
Leading Theory: It seems fuel deposits on the wires in the sending unit cause the problem. Try cleaning the wires.
If not, it could be the cold solder joint on the back of the gauge itself, or a faulty gauge (less likely), or the sending unit itself.
2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
2007 GL450 4Matic - 62,000 Km - Obsidian Black Metallic, black leather, all options
1998 E430 - sold
1989 300E - 333,000 Km - sold
1977 280E - sold
1971 250 - retired
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