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I purchased this past summer a 2007 E63 AMG, with 24K original miles on it. From the first fuel fill-up, had the internal and external smell. Further diagnosis showed that the sender unit had gas on top and around it.
Since my car was no longer under the 15-year warranty extension per MBUSA (although the original owner had the letter and service booklet addendum nicely in with the owner’s manual pack…never getting the work done), I went ahead and just ordered the parts from my local dealer (MB Annapolis, www.getmercedesparts.com offering a 25% parts discount ordering online).
Got the two green replacement round seals, wiring pigtail for the E63, and a new sender and fuel pump unit.
Job took about two hours, taking my time. The hot tip is to attach a wire or cord to the fuel lines where they attach to the fuel pump unit. That way you can use the cord as a “fish tape” so you can pull the replacement sender unit’s hoses through the tank back to the fuel pump unit to re-attach them.
My fuel pump module (passenger side) was not leaking, so I saved it as a spare, if ever needed.
No problems since, but I am careful not to over-fill the tank when fueling up. Usually I just round it up to the nearest dollar after the first “click” of the pump handle to shut off. Don’t top off the tank when fueling up.
The parts (discounted per above) were somewhere around $600 for everything. Everything was in stock in US warehouses, so I was able to get it within just a few days. Considering getting a spare sender and pump unit again for the eventual re-leak of the unit(s) that I just replaced. Who knows how much longer MB will keep this stuff available, especially considering the relatively low numbers of E63s brought into the US…..
My 2011 C350 both the Fuel Filter and the Fuel Pump Cover are leaking- wet on top with tank full.
Fortunately it's pretty well documented how to change these out. But you're in for a hefty parts bill. Make sure you use one of the online MB parts dealers, so that you can get the parts at a 20-25% discount from MSRP. That eases the pain quite a bit.
Don't re-use your round rubber seals where the sender module and the pump module fit into the top of the fuel tank -- order new sealing rings. They are cheap. Also, you need to check whether your car requires a "dongle" adapter for the wiring to the sender unit.
It's not too difficult of a DIY repair job. My only advice is just drive your car so that the reserve light goes in, so you have 1/8 to 1/4 of a tank of gas. Makes the job much nicer and also much safer.
Last edited by gerryvz; Dec 26, 2024 at 11:07 AM.
Reason: updated on advice for additional parts to order/check.
Just had to replace Fuel Filter and Fuel Tank Access Cover on my ‘11 C350 both were leaking with fuel tank full and P0456 code.
Wanted Filter same day so bought at dealer $200 and another $46 for the Sealing Ring.
Have completed “Drive Cycles” check engine light has gone out.
Last edited by Craig Ewing; Jan 2, 2025 at 04:56 PM.
Hi guys, unfortunately I'm have a stalling issue where the fuel pressure isn't adequate. My car starts then stops after 5-6 seconds. I took it to the dealer last week and they said the fuel pump, sender and other components will cost me $2,800, parts and labor. I know the 15-year extension on this is expired, but am I eligible for a discount of some sort? Thanks
Hi guys, unfortunately I'm have a stalling issue where the fuel pressure isn't adequate. My car starts then stops after 5-6 seconds. I took it to the dealer last week and they said the fuel pump, sender and other components will cost me $2,800, parts and labor. I know the 15-year extension on this is expired, but am I eligible for a discount of some sort? Thanks
You should be able to get the factory parts via an online MB dealer for about 25-30% below MSRP. The dealer you talked to is probably quoting you MSRP or a marked-up MSRP, plus labor and such.
If you provide me with the VIN number of your car, I can get you the part numbers you will need. You should replace both the fuel pump module and the fuel pressure module, on either side of the fuel tank. You will also need a pigtail adapter for the wiring, and two round sealing rings.
The labor takes about 60-90 minutes, and only requires a few basic hand tools. Best to be done with a half full or lower level of gas in the tank. You can siphon it out to lower the fuel level if it is high. I did the job with a nearly full tank, you just end up spilling a bit more fuel when removing the modules from the tanks.
For my 2007 E63 AMG, the parts (discounted) cost around $700 all in. There are MANY online MB dealers that offer genuine MB parts at the discount levels I mentioned above. For example, my local dealership sells MB parts online via its web site www.getmercedesparts.com
There are plenty of Youtube videos that detail how to change these modules out, as well as threads here. Save yourself 2 grand and do the job yourself. As always, be careful when working around gasoline, and do the job whilst outdoors (not in your garage) for optimum ventilation.
You should be able to get the factory parts via an online MB dealer for about 25-30% below MSRP. The dealer you talked to is probably quoting you MSRP or a marked-up MSRP, plus labor and such.
If you provide me with the VIN number of your car, I can get you the part numbers you will need. You should replace both the fuel pump module and the fuel pressure module, on either side of the fuel tank. You will also need a pigtail adapter for the wiring, and two round sealing rings.
The labor takes about 60-90 minutes, and only requires a few basic hand tools. Best to be done with a half full or lower level of gas in the tank. You can siphon it out to lower the fuel level if it is high. I did the job with a nearly full tank, you just end up spilling a bit more fuel when removing the modules from the tanks.
For my 2007 E63 AMG, the parts (discounted) cost around $700 all in. There are MANY online MB dealers that offer genuine MB parts at the discount levels I mentioned above. For example, my local dealership sells MB parts online via its web site www.getmercedesparts.com
There are plenty of Youtube videos that detail how to change these modules out, as well as threads here. Save yourself 2 grand and do the job yourself. As always, be careful when working around gasoline, and do the job whilst outdoors (not in your garage) for optimum ventilation.
Thanks gerryvz, appreciate your response. I sent you a PM with my VIN #.
Hi guys, just got by fuel pumps and sender replaced with the piggyback harness. All is good now! Thanks to @gerryvz and his help.
Does anyone know if I can get reimbursed by MBUSA for this? I know I'm out of the warranty coverage period, but seeing if anyone out there has gotten any type of reimbursement from them. Thanks
Hi guys, just got by fuel pumps and sender replaced with the piggyback harness. All is good now! Thanks to @gerryvz and his help.
Does anyone know if I can get reimbursed by MBUSA for this? I know I'm out of the warranty coverage period, but seeing if anyone out there has gotten any type of reimbursement from them. Thanks
We are several years out of the warranty period. I believe it was 15 years from date of original delivery of the car. MB will laugh in your face if you ask them about any warranty, but they will certainly be happy to have you pay them $5K for a fuel delivery + pump module + fuel tank replacement. Yes, the original MB warranty specified replacement of the fuel tank, as well. This, of course, is not generally necessary when the delivery modules leak.
Just got off the phone with my local dealer and they're saying it's a class action settlement that's been set up, so we all get a fix at no cost. Apparently, it's a software patch that'll take care of the issue, so no messy recall necessary.
Just got off the phone with my local dealer and they're saying it's a class action settlement that's been set up, so we all get a fix at no cost. Apparently, it's a software patch that'll take care of the issue, so no messy recall necessary.
There is no software involved with the W211 E55 fuel system except the Motor Electronics providing a ground to activate the solenoid that provides power to the fuel pumps.
Any updates on this? Did you get the proper reimbursement from your local dealer, or MBUSA?
I just received an email today from MBUSA asking for me to provide the repair receipt to a local dealership. I had the repair done at a local Indie shop.
Dealership replied and said warranty expired in 2021. Guess I'm cooked.
Thanks for the update.
I would have been SHOCKED if the dealership would have honored the extended warranty, past the stated 15 years from date of delivery of the vehicle. Even as a goodwill gesture.
I'm waiting for the other recent poster to detail the software update that his dealership says fixes this fuel delivery module gasoline leakage issue, though.
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