W213 E63s RMS Leak
MBWorld Fanatic!
Joined: Jul 2013
Posts: 2,594
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From: Toronto, Ont, Canda
go fast grocery getter wagon
My scope of work on rms are:
labor
10 screws + 8 capscrews
13 bolts
crankcase cover 177-010-37-08
sealant 003-989-98-20-10
elastomer molded seal 177-201-03-00-64 + 177-201-09-00
there is a nov 2022 tsb on this issue. Citing crankcase pressure vacuum is too high.
labor
10 screws + 8 capscrews
13 bolts
crankcase cover 177-010-37-08
sealant 003-989-98-20-10
elastomer molded seal 177-201-03-00-64 + 177-201-09-00
there is a nov 2022 tsb on this issue. Citing crankcase pressure vacuum is too high.
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Can you post the TSB?
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
So, short of a preventive procedure for the oil separators to address the clogging, does it seem that all of our vehicles will eventually suffer the RMS failure? Is the issue unique to the E63S? This engine is used in other product lines, but I haven't seen any mention of RMS failures on those vehicles.
Last edited by HBerman; Apr 13, 2023 at 08:44 PM.
Senior Member
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'15 E63S,'21 LCI M5
So, short of a preventave procedure for the oil separators to address the clogging, does it seem that all of our vehicles will eventually suffer the RMS failure? Is the issue unique to the E63S? This engine is used in other product lines, but I haven't seen any mention of RMS failures on those vehicles.
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2020 GLS580, 2018 E63s
Last edited by Scttq; Apr 13, 2023 at 06:14 PM.
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From: Canada
2023 E63s Sedan, 2020 E53 Sedan
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From: Toronto, Ont, Canda
go fast grocery getter wagon
if you are still under warranty and has no sign of leaks, doing this as preventative measure may mean you are paying this out of own pocket. I am not sure if this is a good move ??
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From: Canada
2023 E63s Sedan, 2020 E53 Sedan
Out Of Control!!
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From: unbegrenzt
2017 GLE350 4MATIC
I think someone has posted parts costs for vapor separator replacement, it was far less than $1,000. There might be other clips or brackets that are broken during the separator replacement project, but I don't see this costing anywhere near $1,000 for a DIY job.
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From: Toronto, Ont, Canda
go fast grocery getter wagon
if diy on separators, then parts are like $300 at most. Otherwise, the labor is the killer.
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From: unbegrenzt
2017 GLE350 4MATIC
To make the vehicle downtime even shorter, one separator at a time could be replaced. I did this with spark plugs - replaced 3 out 6 in the first step, then replaced the second three when I had more time available.
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Joined: Mar 2021
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From: Beech Mountain, NC
E63s SL550 GL450
My 2021 sedan has 9700 miles on it. No signs of oil on the garage floor and it was in last week for service B and no sign of a leak. However, being OCD and **** retentive the potential concerns me. Any suggestions on when one should consider having the separators and vent lines changed to prevent an RMS being damaged?
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18 E63s Wagon
I got a quote from Mercedes dewler of $2200 and chsnge to replace JUST the separators, including the cost of the separatorw which I believe were $305 per side. This did not include the vent lines which when I got this quote a week ago were not available. Also got a quote at the same time for the whole assembly including the vent lines, separators and v belt was slightly over $1000 and on backorder....
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From: Phoenix
222 S-65
Question for MB techs.... Does the transmission come out of 177 powered cars without pulling the engine and transmission as a set?
If so... why not pull the box and replace the rear main seal as we have done with every other car since the advent of lip seals?
If so... why not pull the box and replace the rear main seal as we have done with every other car since the advent of lip seals?
Out Of Control!!
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From: unbegrenzt
2017 GLE350 4MATIC
My 2021 sedan has 9700 miles on it. No signs of oil on the garage floor and it was in last week for service B and no sign of a leak. However, being OCD and **** retentive the potential concerns me. Any suggestions on when one should consider having the separators and vent lines changed to prevent an RMS being damaged?
If there is no new part number, it's anyone's guess when to change the separators preemptively. If the vehicle is under warranty, it's not so much a financial issue as a time/hassle/inconvenience issue.
If there is a new part number available, I would think about changing the parts to the latest level.
Whether or not there is a new part number available, I would change them once the car is out of warranty.
Last edited by chassis; Apr 16, 2023 at 04:55 PM.
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Good question. If someone has EPC the could see the part number revision history. If MB has made a series of changes on the part, it's a potential (and likely) sign they know there is a problem and they are trying to address it with modified parts. This is the case with cam position sensors and cam magnets on the M274/M276/M278/M157 engines, and with pistons on the M274/M264 engines.
If there is no new part number, it's anyone's guess when to change the separators preemptively. If the vehicle is under warranty, it's not so much a financial issue as a time/hassle/inconvenience issue.
If there is a new part number available, I would think about changing the parts to the latest level.
Whether or not there is a new part number available, I would change them once the car is out of warranty.
If there is no new part number, it's anyone's guess when to change the separators preemptively. If the vehicle is under warranty, it's not so much a financial issue as a time/hassle/inconvenience issue.
If there is a new part number available, I would think about changing the parts to the latest level.
Whether or not there is a new part number available, I would change them once the car is out of warranty.
Super Member
Joined: Mar 2021
Posts: 509
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From: Beech Mountain, NC
E63s SL550 GL450
Good question. If someone has EPC the could see the part number revision history. If MB has made a series of changes on the part, it's a potential (and likely) sign they know there is a problem and they are trying to address it with modified parts. This is the case with cam position sensors and cam magnets on the M274/M276/M278/M157 engines, and with pistons on the M274/M264 engines.
If there is no new part number, it's anyone's guess when to change the separators preemptively. If the vehicle is under warranty, it's not so much a financial issue as a time/hassle/inconvenience issue.
If there is a new part number available, I would think about changing the parts to the latest level.
Whether or not there is a new part number available, I would change them once the car is out of warranty.
If there is no new part number, it's anyone's guess when to change the separators preemptively. If the vehicle is under warranty, it's not so much a financial issue as a time/hassle/inconvenience issue.
If there is a new part number available, I would think about changing the parts to the latest level.
Whether or not there is a new part number available, I would change them once the car is out of warranty.
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From: unbegrenzt
2017 GLE350 4MATIC
Thanks for the reply. I can't rely on the dealership I bought the car from to clarify the status of a parts update. Hell, they can't even get me a windshield wiper arm assembly for a GL450, or fix the clicking driver seat.. The thought of them pulling the engine and transmission to replace a RMS makes me sick to my stomach. If redesigned parts are available I'd buy them and pay the independent shop that has been doing work on our three other MB's to replace the separators and vent lines. Just not sure how to verify the parts issue.
Super Member
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From: Beech Mountain, NC
E63s SL550 GL450
EPC is the answer. If you post your VIN and if @konigstiger is willing to check, more light could be shed on the question.
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From: USA
2018 E63S Wagon, 2017 Z51 Corvette
For all of you that are looking at replacing your separators - You do realize this doesn't fix the root cause and you will have to replace the separators again?
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18 E63s Wagon
Super Member
Joined: Mar 2021
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From: Beech Mountain, NC
E63s SL550 GL450
