Urgent notice. 03-06 E55's that were involved in the fuel sender recall are bombs.
I had the exact same issue as 03RSTT and many of you are having. The cabin of my 2003 E55 started smelling like gas, took it to the dealer, he said that both fuel sending units (there's one on either side of the gas tank) were leaking gas out the tops. He could not tell if it was a small crack in the plastic of the sending unit assembly or a broken o-ring seal on top. Either way he said both had to be replaced.
I had already done my research on this and other forums' posts and played dumb to see where he'd take it. I said "Oh wow, well that seems like a huge safety issue. Have you ever heard of anything like this happening with these cars? Have you heard of any bulletins or recalls?" He said he'd never seen or heard anything like this issue before. I let him get off the phone so he could call my extended warranty company to see if they'd cover it.
Next day he calls back and says the warranty doesn't cover the sending units. By now I have all my research handy (and have already priced out the replacement of both units - $2,000) and said "Well there's been a recall for this exact issue on this exact car, it's a major safety concern and I'm going to contact MBUSA as well as NHTSA on this matter." He solemnly asked for the recall campaign number (2008-020001) and pledged to look into it.
A few days later (without my calling MBUSA, NHTSA, or doing anything other than mentioning the above to him) he calls back and says the replacement of both sending units will be covered as a "goodwill gesture" by Mercedes Benz.
Clearly the above posts, complaints to MBUSA and NHTSA, and general uproar over this issue have gotten MBUSA's attention, because he'd clearly contacted his service manager who contacted MBUSA who said they'd cover it and to use the words "goodwill gesture", which other posters here (the lucky ones) have heard from their dealers as well.
Here's my advice: if you have this issue, bring it to your dealer, let him diagnose it, then bring up the recall and explain that you're prepared to complain to MBUSA and NHTSA (campaigns at the NHTSA exist for this issue for I believe all model years of the W211 E55). Hopefully you'll get the same answer.
A guy at work offered to buy my E55 from me, but I don't know if I can sell it to him with a clear conscience.....
A guy at work offered to buy my E55 from me, but I don't know if I can sell it to him with a clear conscience.....
Oh well. Maybe I'll take the E55 and my Chevy truck and go get a new King Ranch...




https://mbworld.org/forums/w211-amg/...ation-diy.html
On further investigation today, I will have to pull the fuel pumps out on the passenger (right) side in order to get the sender on the left out. The cap on the right side is starting to crack too. I think before too long, it is going to start leaking too! This is such a poor design!
My car is now under warranty. I will replace the driver's (left) side since it was leaking before I got the warranty. But the other side I am going to wait on and let warranty cover that one if/when it leaks. Each side is $348 to replace! (parts only).
I have the exact same problem and MB told me they would not help.
I have raw gasoline under the seats were my 16month old sits!! WOW!
I had the recall performed in 2008, but both units are leaking. Thanks to the members on this site I knew exactly what to check. I want to spend my time and money improving this car not fixing it!




The Best of Mercedes & AMG
Honestly, just search this forum. Everything I have ever needed for repairs, service, tuning or advise can be found on here.
I live two lives - the one I live on line looking at performance upgrades for my car and the real life I spend fixing the thing!
This latest thing has me boiling. - If you recall a car for a safety issue, repair it and a few months later the customer shows you the same problem - then you didn't fix it! basic customer service.
When you have a high end product like the AMG that is leaking fuel in the passenger compartment, I would do everything in my power to fix it for my names sake.
MB spend $1.5m a day on research and development, they could fix this.
52k the recall was performed
61k the seals failed and leaks started again
65k the senders failed/cracked/warped and fuel was pouring out
If you wish to test here is the procedure.
1. Fill the car up.
2. Drive straight home.
3. Park in the driveway.
4. Take rear seat out(pull up on the leading edge of the lower cushion...there are 2 tabs to depress then the seat comes up)
5. 8mm socket and take the drivers side inspection cover off.
6. As you see in my picture there will be a fuel lake around that sender.
They are replacing my tank, sender and pumps....
all on Mercedes Benz's dime. They know there is an issue, you just have to push
As background, both my fuel sending units were cracked and leaking. Took to dealer, he diagnosed it, was going to be about $2,000 to fix, I brought up the recall, dealer looked into it and decided to cover it as a "goodwill gesture".
Picked up the car from the dealer and asked about what was going on and why he covered it. He said that he hadn't known about the recall till I told him about it, he looked it up and saw it addressed exactly this issue. He couldn't see what the previous dealer who performed the recall work actually did (there were several options: replace sending unit, replace seal, do nothing). He said the dealer itself and Mercedes the company were involved, somehow sharing the cost of the repair/replacement. He said the part had been updated since '03 and so I shouldn't have this issue again.
Unfortunately it sounds like most people with this issue see it happen again, so I'm just waiting for it. I asked specifically about the warranty on the repair, and he said that since it was a "goodwill gesture" (read: free) there was no warranty on the sending units. However, I do have a feeling that if the exact same issue happens again, and I bring it to this dealer who supposedly did the work that was supposed to fix it for good, they won't just saddle me with the whole cost again. I'm very happy with this dealer and the way they've handled it, just not too pleased with Mercedes design...
Not much else to report, have been driving the car for a few weeks since the repair and have had no issues, but it will take time to tell. Once again can't stress enough that if you have this issue, take your car to the dealer and mention 2008-020001. Also, go to NHTSA and file a formal complaint, as I and countless other E55 owners have.




My advice if going back to Mercedes is don't tell them you have opened up the two ports to look at the fuel issue otherwise they will say that they are "concerned" about contamination getting into that area causing the failure! Just tell them you smell gas and read about incidents and leave it at that. I may be SOL but I am going to give it a try at least.
The campaign on the E55 sending unit involved inspecting it for cracks, if a crack was present in the plastic a new sending unit was installed. If no crack was present, a modified metal sleeve was installed to reinforce it. Most of the time, the plastic broke when attempting to replace the sleeve so a new sender was installed.
The main sources of fuel gathering around that left sending unit bowl are. 1: leak at the fuel tank pressure sensor 2: leak where the vent line to charcoal canister is molded into the top of the fuel tank. Wrong and wrong. sorry try again. This is why the car will smell of raw gasoline after completely filling it. Wrong againThe gas will run out of that vent and collect around the left sending unit. You can not see the vent unless the fuel tank is removed from the car.
I don't think the exhaust back there is hot enough to ignite it. Your kidding right? 99% of the gas will sit there? Thats why I had gas puddles under the car. Thats why my lower splash shield was full of gas and gas was spilling over it and on the ground. You really think the exhaust pipes on a E55 dont get hot? Get a grip folks. And 99% of the gas will just sit in that bowl. Sending unit seals do not leak that often, and can even split when torqueing the caps down. Been there, done this. Hmmm, mine have leaked on both sides 2 times over the course of 2 years[/quote]
On a more positive note. Glad this thread has helped a few owners. The complaints are piling up at NTHSA and you can read the complaints on the web site. The latest work by Turbo97se seems to have picked up on something new. I will try to go out and check my old failed components later this weekend.
[quote=csumt76;4368938]
I don't pop up here often anymore, but I know what I'm talking about buddy. cheers
On a more positive note. Glad this thread has helped a few owners. The complaints are piling up at NTHSA and you can read the complaints on the web site. The latest work by Turbo97se seems to have picked up on something new. I will try to go out and check my old failed components later this weekend.
Maybe you need to find someone to work on your car that knows what they are doing.




One more thing ... I was surprised/disappointed/shocked to see the terminals on the fuel pumps are not even insulated! Mercedes couldn't even be bothered enough to put a couple of neoprene or molded HPDE over the connections ... bare connections immersed in the fuel tank? Come on Mercedes!!!
Last edited by turbo97se; Nov 25, 2010 at 11:26 PM.
The Evap Valve which is located on the saddle and goes to a 1" vent line cracks and leaks.
It's not the tank, it's the evap valve. when it leaks the fuel will flow down to the pump/sender basket and pool on the pump or sender.
The ONLY way to see the evap valve leak is to drop the fuel tank (After you drop the exhaust and drive shaft)
so there you go we know know what the problem is








BMW M5 - insulated wires - http://picasaweb.google.com/lh/photo...t=embedwebsite
You need to tell all these guys they are doing it all wrong because clearly they should be dealing with external pumps!
External fuel pump on Toyota Lexus?? http://my.is/forums/f221/diy-walbro-...s-alot-409785/
External fuel pump on Nissan Maxima?? http://www.youtube.com/watch?v=51iZC...eature=related
External pump on a Acura/Honda?? http://www.honda-tech.com/showthread.php?t=2424575
Last edited by turbo97se; Nov 27, 2010 at 02:38 AM.




