- Mercedes-Benz C-Class and AMG: Why Does My Car Smell Like Fuel?
Guide to diagnose trouble and recommended solutions
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Gas odor when tank is full



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This is the fuel pump sender unit. It's located under the rear seat driver side.
Now you see the sending unit completely removed and the pull string they're waiting so that I can install the new one when I get it in 48 hours. If you have any questions please feel free to reach out to me.
As you can see this is the top of the sending unit and the cracks are abound. This must have been leaking for a while, but finally got to the point to where the gas smell could not be buried. Initially I did not want to do this, but the dealer wanted to charge me $2,300 for this fix.
Just to make things easier because I did not want to put my hand in the gas tank and try to fix it through the small hole I just attached the string on the disconnected hoses from the fuel pump so that I could pull the entire unit and the string out to the other side. When I replace the part I will just attach a string and pull it through the other side in the reverse order.












