Fuel gauge shows 3/4 tank when full
Thread Starter
Newbie
Joined: Jul 2014
Posts: 4
Likes: 0
From: Toronto
98 e300, 07 gl320cdi, 05 Smart Fortwo, Mini Cooper S
Fuel gauge shows 3/4 tank when full
Hi all. I hope I am not asking a question that has already been answered but I could not find any answers so that's why I'm asking. I have just replaced my lift pump (fuel pump module) on my 2007 x164 GL320 cdi. I used original equipment mb part but now that the vehicle has been filled to top with fuel the gauge only shows 3/4. I only replaced the pump module on passenger side not the level sender on drivers side. ( worked fine before). I know the previous generation vehicles you could reset the computer by pulling a fuse. Can't find any answers or solutions for this model year. Thank you in advance for any input.
Junior Member
Joined: Jul 2015
Posts: 21
Likes: 1
2007 GL 450; 2004 S500
I have the same problem on my 07 GL450. Changed the pump only with sender unit. Worked fine but only show 3/4 when I refill the tank. Did you get an answer? Can the fuse pull correct the issue? Did you resolved the issue? Thanks
Junior Member
Joined: Jul 2015
Posts: 21
Likes: 1
2007 GL 450; 2004 S500
Tank show 3/4 when full after replacing pump w/sender unit
Hi all. I hope I am not asking a question that has already been answered but I could not find any answers so that's why I'm asking. I have just replaced my lift pump (fuel pump module) on my 2007 x164 GL320 cdi. I used original equipment mb part but now that the vehicle has been filled to top with fuel the gauge only shows 3/4. I only replaced the pump module on passenger side not the level sender on drivers side. ( worked fine before). I know the previous generation vehicles you could reset the computer by pulling a fuse. Can't find any answers or solutions for this model year. Thank you in advance for any input.
I have the same problem on my 07 GL450. Changed the pump only with sender unit. Worked fine but only show 3/4 when I refill the tank. Did you get an answer? Can the fuse pull correct the issue? Did you resolved the issue? Thanks
Thread Starter
Newbie
Joined: Jul 2014
Posts: 4
Likes: 0
From: Toronto
98 e300, 07 gl320cdi, 05 Smart Fortwo, Mini Cooper S
3/4 tank showing on gauge after new pump
there is a wire that was not secured properly causing the float not to operate properly for the gauge. I removed the pump rerouted wire and all good.
Apparently there is a service bulletin about this.
Apparently there is a service bulletin about this.
Junior Member
Joined: Jul 2015
Posts: 21
Likes: 1
2007 GL 450; 2004 S500
See pictures of both pump and filter assembly attached:
Thanks
Thread Starter
Newbie
Joined: Jul 2014
Posts: 4
Likes: 0
From: Toronto
98 e300, 07 gl320cdi, 05 Smart Fortwo, Mini Cooper S
I don't recall but it was very evident once I removed the low pressure pump where the problem was causing the float to not function properly.
I hope this helps.
Good luck.
I hope this helps.
Good luck.
Junior Member
Joined: Jul 2015
Posts: 21
Likes: 1
2007 GL 450; 2004 S500
