W213 AMG Discuss the W213 AMG - 2017 to present

W213 E63s RMS Leak

Old Mar 7, 2023 | 10:10 AM
  #1  
Bullishness's Avatar
Thread Starter
Member
 
Joined: Jul 2021
Posts: 100
Likes: 19
2018 AMG G63, AMG E63s
W213 E63s RMS Leak

Hey guys, just picked up a new-to-me 2018 E63s sedan with 18k miles. After driving it for 2 weeks, I found some droplets on the floor of my driveway. I've been monitoring the leak throughout and I finally took it to the dealership, they are 99% certain it's another RMS leak... My question is, looks like this is a MAJOR issue for w213, WHY IN THE WORLD didn't MB recall for this issue?? This seems like it's a super common issue and in my car group, everyone and I mean everyone who had a w213 E63s has had a RMS failure.
Reply
Old Mar 7, 2023 | 10:32 AM
  #2  
SnoopLevine's Avatar
Junior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2020
Posts: 52
Likes: 46
From: Central NY (315)
'18 E63S Sedan - PA1 'Orange Pearl Metallic'
Damn, that's unfortunate. I totally share your frustration with this issue, MB should really issue a TSB asap. Here I am with a '18 at 26k miles thinking I was safe for at least another 10k. I could be wrong but I think you hold the title of lowest mileage w213 e63s to report a RMS leak.

Is your car modified at all?

Last edited by SnoopLevine; Mar 7, 2023 at 10:34 AM.
Reply
Old Mar 7, 2023 | 11:17 AM
  #3  
Cylinder Head's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Jul 2006
Posts: 6,760
Likes: 594
From: Seattle
'19 E63S, ‘16 CLS63 RIP, '09 E63 Gone, '06 M5 Gone, '97 Supra TT Gone
Yeah this is definitely the lowest mileage E63 I've seen with an RMS failure, I'm very sorry to hear that OP.
Reply
Old Mar 7, 2023 | 11:46 AM
  #4  
Bullishness's Avatar
Thread Starter
Member
 
Joined: Jul 2021
Posts: 100
Likes: 19
2018 AMG G63, AMG E63s
All stock.. unfortunately this is something that's happening to all of us.. where is a petition that we can sign to demand MB to recall this issue lol, I'm afraid after I spend $5k to replace the damn $26 part, its gonna fail in 20k again.
Reply
Old Mar 7, 2023 | 12:20 PM
  #5  
chassis's Avatar
Out Of Control!!
MBWorld Ambassador

5 Year Member
Liked
Loved
 
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
Sorry to hear. Please update when the diagnosis is available. It will be interesting to know if your engine has (a) failed vapor separator(s).
Reply
Old Mar 7, 2023 | 01:09 PM
  #6  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
parts are cheap (per se). It is all about labor costs for this repair and the time length as well (assuming all parts are readily available)
Reply
Old Mar 8, 2023 | 06:44 PM
  #7  
Jons550's Avatar
Member
 
Joined: Dec 2010
Posts: 98
Likes: 8
From: New Mexico
2019 E63s
Hmmmm.. This is a bit of a concern. I am looking into a 2019 CPO with a couple years of factory warranty tacked on, but still. The other thing is this seems to be a recurring problem. Some years a go I had an almost new 2012 C63 (the did not have an S at that time, just what they called the development package). In any case it also developed a rear main seal leak. It was a different engine than what we are talking about though.
Reply
Old Mar 8, 2023 | 07:04 PM
  #8  
SnoopLevine's Avatar
Junior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2020
Posts: 52
Likes: 46
From: Central NY (315)
'18 E63S Sedan - PA1 'Orange Pearl Metallic'
Originally Posted by Jons550
Hmmmm.. This is a bit of a concern. I am looking into a 2019 CPO with a couple years of factory warranty tacked on, but still. The other thing is this seems to be a recurring problem. Some years a go I had an almost new 2012 C63 (the did not have an S at that time, just what they called the development package). In any case it also developed a rear main seal leak. It was a different engine than what we are talking about though.
Definitely concerning. Seems to be that the issue with the rear main seal leaking is one of two things... 1) the seal is just **** to begin with or 2) the oil separators are not working as designed and creating too much pressure and pushing oil out through the rms.

With the M156 engine, there's aftermarket oil air separators/catch cans that run the blowby through the oem PCV valve and back to the intake manifold. However, I don't currently see something similar being sold specific to the M177 LS2. I think the smart thing to do on these cars is to inspect underneath for an oil leak, if you don't see anything - thank god - and then throw a new set of oil separators on the car.
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 Mar 9, 2023 | 10:43 AM
  #9  
JTS97Z28's Avatar
Member
 
Joined: Jan 2021
Posts: 197
Likes: 98
From: Fernandina Beach, FL
2014 AMG E63S
Is an RMS leak something you can spot just by looking under the car, or reaching your phone under it and taking a pic? Or are there shields/panels in the way? ‘19 here with 35k miles and no signs of any drips under the. At, but I’d be curious to put my phone down there to get a little better look.
Reply
Old Mar 9, 2023 | 11:10 AM
  #10  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
Originally Posted by JTS97Z28
Is an RMS leak something you can spot just by looking under the car, or reaching your phone under it and taking a pic? Or are there shields/panels in the way? ‘19 here with 35k miles and no signs of any drips under the. At, but I’d be curious to put my phone down there to get a little better look.
There is a protective metal sheet panel right underneath to protect the tranny/engine. You have to rely on the fluid stain on the garage floor to give you the sign you may have an issue.
Reply
Old Mar 11, 2023 | 03:38 PM
  #11  
GreyE63Swagon's Avatar
Newbie
 
Joined: Jan 2023
Posts: 8
Likes: 11
Mercedes E63S Wagon
RMS seal leaking with cover removed
Attached Files
File Type: mov
RPReplay_Final1675714619.MOV (15.92 MB, 1375 views)
Reply
Old Mar 11, 2023 | 04:53 PM
  #12  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
Originally Posted by GreyE63Swagon
RMS seal leaking with cover removed
yup. No mistake.

what model year ? What mileage ?
Reply
Old Mar 11, 2023 | 05:32 PM
  #13  
chassis's Avatar
Out Of Control!!
MBWorld Ambassador

5 Year Member
Liked
Loved
 
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
Given what seems to be the emerging prevalence of this issue, expect to see a third party catch can to replace the factory catch can (vapor separators). MB poor engineering strikes again.
Reply
Old Mar 11, 2023 | 05:55 PM
  #14  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
I agree. I think nobody will design / make it now as w213 is at end of life.
Reply
Old Mar 11, 2023 | 07:37 PM
  #15  
Sunbeltgolfer11's Avatar
Super Member
Photogenic
Liked
Loved
Community Favorite
 
Joined: Mar 2021
Posts: 509
Likes: 217
From: Beech Mountain, NC
E63s SL550 GL450
Originally Posted by bobblehead
I agree. I think nobody will design / make it now as w213 is at end of life.
Good point. Hopefully there are enough of these engines out in the wild that someone will take a chance and design a fix for it.
Reply
Old Mar 12, 2023 | 02:04 PM
  #16  
GreyE63Swagon's Avatar
Newbie
 
Joined: Jan 2023
Posts: 8
Likes: 11
Mercedes E63S Wagon
2019 Wagon with 46,000 miles. It had the leak when I purchased it. Dealer is covering fix with CPO warranty.
Reply
Old Mar 12, 2023 | 02:12 PM
  #17  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
Just make sure dealer is fixing the seal + changing out the separators at the same time
Reply
Old Mar 12, 2023 | 02:15 PM
  #18  
GreyE63Swagon's Avatar
Newbie
 
Joined: Jan 2023
Posts: 8
Likes: 11
Mercedes E63S Wagon
Originally Posted by bobblehead
Just make sure dealer is fixing the seal + changing out the separators at the same time
I did. They are also replacing the oil pan. They have had it for a month now. I know this fix requires extensive labor, but it shouldn't take this long.
Reply
Old Mar 12, 2023 | 02:28 PM
  #19  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
Technically, if dealer has all the parts, j was told it should be a 4-5 days job.

But mine took exactly 1 month because of waiting for parts here and there and it was over the Christmas and New Year holidays.
Reply
Old Mar 12, 2023 | 02:50 PM
  #20  
Sunbeltgolfer11's Avatar
Super Member
Photogenic
Liked
Loved
Community Favorite
 
Joined: Mar 2021
Posts: 509
Likes: 217
From: Beech Mountain, NC
E63s SL550 GL450
Originally Posted by GreyE63Swagon
I did. They are also replacing the oil pan. They have had it for a month now. I know this fix requires extensive labor, but it shouldn't take this long.
Parts are a huge problem. I've had an engine mount for a different MB model on order for 11 months and still waiting. I was at the dealership yesterday to order a couple small parts and they said they are having trouble getting anything delivered. It seems the only parts being made are for the production line.
Reply
Old Mar 12, 2023 | 07:43 PM
  #21  
ska597's Avatar
Senior Member
Liked
Loved
Community Favorite
 
Joined: Feb 2021
Posts: 304
Likes: 75
From: New England
21 E63s wagon
What are the odds that even once repaired that the RMS could fail again in 20-30k miles? Does changing it out with newer parts somehow make this less an issue down the line or are we just buying time until it fails again due to poor engineering? I have 2021 wagon with 7,000 miles and I wonder if and when this will go out for mine.
Reply
Old Mar 12, 2023 | 08:57 PM
  #22  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2013
Posts: 2,591
Likes: 809
From: Toronto, Ont, Canda
go fast grocery getter wagon
Only time will tell … as you can see in this and another thread on this matter, the mileage can vary greatly.

mine failed at 5 yrs mark with 100,000km as i daily drive it

Last edited by bobblehead; Mar 12, 2023 at 09:00 PM.
Reply
Old Mar 13, 2023 | 12:45 AM
  #23  
Bullishness's Avatar
Thread Starter
Member
 
Joined: Jul 2021
Posts: 100
Likes: 19
2018 AMG G63, AMG E63s
Wonder if anyone has repaired the seals twice now in their lifetime ownership
Reply
Old Mar 13, 2023 | 02:32 AM
  #24  
chassis's Avatar
Out Of Control!!
MBWorld Ambassador

5 Year Member
Liked
Loved
 
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
Originally Posted by Bullishness
Wonder if anyone has repaired the seals twice now in their lifetime ownership
The vapor separator failure may be time related as much as mileage related. Higher mileage in a shorter time suggests higher average engine temperature, which to my way of thinking helps separator function. A garage queen would have generally cooler average engine temp (over the long term) and oil vapor can migrate, condense and gum up the works (plug the separator). The separators have some fussy valves (overpressure or relief valves) and maybe a mesh filter or two. Perfect for getting plugged.

Removing the factory separators and replacing with an aftermarket catch can would be one option. Or opening up the MB separators and modifying the internals by removing check valves and filters. Problem is the separators appear to be blow molded plastic and these could be hard to reassemble once taken apart. Someone will figure something out.

Last edited by chassis; Mar 13, 2023 at 02:39 AM.
Reply
Old Mar 13, 2023 | 11:46 AM
  #25  
Bullishness's Avatar
Thread Starter
Member
 
Joined: Jul 2021
Posts: 100
Likes: 19
2018 AMG G63, AMG E63s
Anyone used AT205 for resealing?
Reply

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 1 votes, 5.00 average.


All times are GMT -4. The time now is 04:05 PM.

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