Hopefully I'll have something to add here eventually. My gauge is doing the same thing, so I tried cleaning the sender but it didn't help and I noticed the tabs for the reserve light is gone so I bought a new one, just need to install it now.

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Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k