Fuel gauge does not reset on refueling - PeachParts Mercedes-Benz Forum

rickdefluiter · #1 01-22-2007, 03:06 PM

I have a 01 430 with about 67000mi, and the fuel gauge suddenly stopped working. With refueling the needle remained in the same spot and continued to drop to empty even though I filled up. It continues to do so even after several refuelings. It does not gradually climb after driving. I "rebooted" the car by disconnecting the battery, and this returned the fuel gauge to a normal operating pattern, until the next fill up, where it failed again to regester a full tank of fuel. This is the firsts MB I have owned and your site has been a big help. Thanks.............. 2/19/07 up date, after refueling a few times found out that if I don't top off the tank to the pump cut off, the gauge works just fine. So guess will put off the trip to the parts store or dealer for awhile.

Zim · #2 01-22-2007, 03:28 PM

I have an 01 ML430 and my gage does the same thing. When you fill up it goes to full then slowly falls off. Some times after I fill up it goes to full and when i turn off the key and restart it goes to empty. A lot of times i'll pull the fuse for the dash and it'll register the right amount. But as soom as you fill up the circus starts again. I guess the only fix would be a new fuel sender. But don't quote me on that one.

Johnhef · #3 01-22-2007, 04:11 PM

two options.

first is to take it in and have the cluster recoded to "direct sensor value"

if that doesnt fix it, the fuel level sensor/pump will need to be replaced

mbdoc · #4 01-22-2007, 04:59 PM

From description I believe that Johnhef is correct..bulletin on the cluster holding correct coding..start there.
Only other choice is sending unit which is part of the fuel pump assembly.