E-Class (W212) 2010 - 2016: E 350, E 550

Fuel gauge

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Old 03-01-2022, 05:32 AM
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w212 3.5L
Fuel gauge

I'm driving a 2014 e-class. every time I fill the tank to the top the gauge does not reach the full level (sometimes stay at half a tank, the tank should be full) and when the tank has less than a half it would sometimes shut down with no lights what so ever. have this happened to any one ?
Old 03-01-2022, 09:41 AM
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1922 Ford Model T / no OBD
Did you have any job on fuel tank done lately?
The saddle tanks have dual metering gauges and venturi pump to transfer fuel above the hump.
You have symptoms that 1 side is not working.
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Old 03-01-2022, 10:59 AM
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I replaced the fuel pump a while ago.
Old 03-01-2022, 11:38 AM
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2016 E350 Sport
Originally Posted by fear24
I replaced the fuel pump a while ago.
First, I would run an iCarsoft (or other) diagnostic, and clear any codes.
Old 03-01-2022, 04:09 PM
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1922 Ford Model T / no OBD
Originally Posted by fear24
I replaced the fuel pump a while ago.
Is it the same time the above happen?
You need to reset everything to the standards.
Old 03-02-2022, 02:26 AM
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Originally Posted by fear24
I replaced the fuel pump a while ago.
Boom, you just answered your own question. You screwed something up. Go back through your work and fix it. God I'm good.
Old 03-02-2022, 04:13 AM
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What to you mean reset everything to standard I already check the fuel pump its work perfectly and the two sensors are working tried to push the sensors with my finger it gave me a reading. I did check the codes it said "right side positive ground" or something like this don't really remember.
The code had something to do with the fuel pump thats why I replaced it yet it still showed after replacing the fuel pump.

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Old 03-02-2022, 09:27 AM
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1922 Ford Model T / no OBD
You likely have 2 separate issues.
1 right side level sensor malfunction
2 the Venturi tube coming from the main pump is misaligned and is not sucking the fuel from right side.
My impression is that you tried to fix right side by replacing the left side, what lead to making left side bad as well.

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