W211 AMG Discuss the W211 AMG's such as the E55 and the E63

AUXILIARY FUEL RELAY/FUSE DANGER!

Old Dec 21, 2019 | 02:25 PM
  #1  
DGSU4EA70's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2011
Posts: 328
Likes: 2
From: Huntington Beach / CA
2005 E55 (FST N OC)
AUXILIARY FUEL RELAY/FUSE DANGER!

Gents,

I recently did the fuel recall, and now I have a new issue with the auxiliary fuel relay/fuse burning/melting! This has happened to me twice now, and when this happens it renders my car useless (wont start). Have any of you had/have this issue and if so, what was the fix to cure this issue?



Happy Holidays Gents!

Surfer70

Last edited by DGSU4EA70; Dec 21, 2019 at 02:27 PM. Reason: SPELLING
Reply
Old Dec 21, 2019 | 02:44 PM
  #2  
E55Greasemonkey's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2012
Posts: 4,510
Likes: 1,513
From: Orbiting the planet
This place is a joke.
I ran my own 75amp 12v relay and 12 gauge wiring from the rear power distribution point, to the relay and then to the pump. No more problems. Be aware my car is a 2004 with a single relay feeding both pumps.
Reply
Old Dec 21, 2019 | 03:20 PM
  #3  
DGSU4EA70's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2011
Posts: 328
Likes: 2
From: Huntington Beach / CA
2005 E55 (FST N OC)
Thanks Brotha! I see others have had this issue in the FUEL RECALL THREAD. I'm trying to avoid the "stealership" with this issue, but I may make it THEIR problem since they extended the warranty. We shall see.....

Last edited by DGSU4EA70; Dec 26, 2019 at 12:48 PM.
Reply
Old Dec 21, 2019 | 05:19 PM
  #4  
bbirdwell's Avatar
MBWorld Fanatic!
Veteran: Army
10 Year Member
Liked
Community Favorite
 
Joined: Jan 2014
Posts: 3,966
Likes: 1,315
From: Republic of Texas
'99 and '05 E55 AMG
If only someone had posted information on this issue before...

Read the entire thread linked here as it includes the schematic and replacement relay information:
https://mbworld.org/forums/w211-amg/...intenance.html

Follow up with this:
https://mbworld.org/forums/w211-amg/...ify-parts.html

Wire gauge info here:
https://mbworld.org/forums/w211-amg/...ml#post7901019

Dealership won't cover it because the wiring is not a part of the leaky tank recall.

Merry Christmas, folks!


Last edited by bbirdwell; Dec 21, 2019 at 05:25 PM.
Reply
Old Dec 21, 2019 | 07:10 PM
  #5  
tlambert's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2015
Posts: 1,811
Likes: 282
From: SC
2005 E55 AMG
Barry all that info she be in the top sticky section of the forums. That would help a lot of people out.

Maybe an Admin could get that done!!
Reply
Old Dec 22, 2019 | 04:10 PM
  #6  
HardmanGT's Avatar
Junior Member
10 Year Member
Liked
 
Joined: Jun 2014
Posts: 40
Likes: 9
From: Rutherfordton, NC
2005 E55 2005 E500 4Matic
Mine just started acting up and I have the same burned relay issue. The new 70 amp relay and socket showed up from Amazon this morning. Went out to tin the ends new pigtail for soldering and my 100 watt soldering iron doesn’t have enough heat for the large gauge wires. Might have to get a soldering torch. Trying to avoid a crimp connector on this project.

Last edited by HardmanGT; Dec 22, 2019 at 09:18 PM.
Reply
Old Dec 22, 2019 | 05:25 PM
  #7  
bbirdwell's Avatar
MBWorld Fanatic!
Veteran: Army
10 Year Member
Liked
Community Favorite
 
Joined: Jan 2014
Posts: 3,966
Likes: 1,315
From: Republic of Texas
'99 and '05 E55 AMG
I used a 25-watt soldering iron although it was a PITA to maintain contact with the wire. A good crimp tool will actually microweld the contacts but I tend to second guess myself and solder the connector.
Reply
Old Dec 23, 2019 | 05:52 AM
  #8  
StarvingArtist's Avatar
MBWorld Fanatic!
10 Year Member
Photogenic
Liked
Loved
 
Joined: Aug 2012
Posts: 1,790
Likes: 109
From: DownEast Maine
CLS 55 AMG E500 ML320
The pumps pull more wattage when one is running backwards, might want to check their work on the replacement too.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Dec 26, 2019 | 12:47 PM
  #9  
DGSU4EA70's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2011
Posts: 328
Likes: 2
From: Huntington Beach / CA
2005 E55 (FST N OC)
Originally Posted by bbirdwell
If only someone had posted information on this issue before...

Read the entire thread linked here as it includes the schematic and replacement relay information:
https://mbworld.org/forums/w211-amg/...intenance.html

Follow up with this:
https://mbworld.org/forums/w211-amg/...ify-parts.html

Wire gauge info here:
https://mbworld.org/forums/w211-amg/...ml#post7901019

Dealership won't cover it because the wiring is not a part of the leaky tank recall.

Merry Christmas, folks!

Thanks Brotha! Hope you had a Merry Xmas.....
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 05:10 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE