How do you access the fuel sender on a 99 E430. My tank got overfilled at the gas station and I've now gone 200 miles and the gauge has only dropped to 3/4! BTW could anything else have been damaged, the car normally takes $65 to fill, I was expecting $75 as it was really empty and gas has gone up in price, it took $85 before it tripped off. When I removed the filler it blew a good gallon or so back at me.

Thanks for any information,

Peter