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Old 01-22-2003, 04:25 PM
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S320 (W140) Fuel Gauge Problems

My 1998 S320 seems to have a typical fuel gauge problem. That is when the tank is filled up, the needle shows as if it is 2-3 gallons short of full. It used to take about 220 miles before the needle reaches 1/2 mark but now it takes about 160 miles to do that.

I did a search on this forum and it looks like the fuel sender unit is bad. BUT when I tried to order this part from Fastlane or any other parts stores, there are NO fuel sender unit available for S320. I can see E320's fuel sender units available but it looks as if S320 doesn't have such units.

Any ideas?
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Old 01-22-2003, 05:42 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Most of the later MB's have this fuel gauge level sensor problem including the 1998 S320. The part number is 140-542-19-17 & has replaced 4 different part numbers!! List is $ 226.
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Old 01-22-2003, 05:46 PM
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Great replies. Does Fastlane have this part? Research time again...

Thanks DOC
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