TugboatBill

Likely a design issue with the separator. So unless MB has redesigned it, replacement just gets you a clean separator which will exhibit the same issue again when it gets clogged.

chassis

Precisely. As stated above or in the other RMS thread.

Someone needs to check EPC for succession of part number for the separators. If a history of part number changes is the case, and if your car does not have the latest part number, replace the separators with the latest part number. Because the problem is new/emerging, there is no guarantee the latest part number is “the solution”. It is simply the best choice available at the moment.

If there is no evidence of part number revisions, replacing the separators is still prudent because it would avoid a plugged separator which has seen some use. As stated earlier, it’s not possible to know exactly how much time or mileage is required before the separators plug. But it is certain that a newly installed separator is not plugged.

The above is a movie seen by MB owners over the years. MB has a problem, doesn’t say anything, and issues revised parts in the hope of solving the issue without fanfare.

Sunbeltgolfer11

My VIN is W1KZF8KB3MA967517. If that can be used to determine part numbers or updated part numbers it would be appreciated. I am probably in the minority on this issue, but, would be willing to spend the money every year if necessary to keep the separators changed and avoid the RMS failure.

SnoopLevine

I called my local MB dealer earlier today and spoke with parts department, no updated part numbers for the separators. Figured i'd share the part numbers and the prices that I was quoted...

Right: 1770105103 ($185.30)
Left: 1770105003 ($178.00)

sixfive

I just took mine to an independent shop to get oil changed and we noticed a slight seeping from somewhere. Upon further research the tech told me it is the rear main seal. Mine is a '19 with a bit over 60k on it. Tech is looking into price to get that repaired but I also just found out my front brakes need replacement . . .

bobblehead

Any warranty left on yours ?

parts are cheap. Labor is the killer if you have to pay from your own wallet

theboogers

Mbusa should own up on these unlimited mileage.

sixfive

nope . . .

HBerman

Waiting for the first 2020 to be leaking. I'm still wondering if this is just an issue with 2018 and 2019 engines.

Mach1n15t

Appreciate the info on this thread. I'm in the process of servicing my 2018 E63S with 30k on it. "RMS failure" popped up in conversation so I figured I'd share my experience as it progresses. I've asked the dealer to take photos of the progress as they replace valve covers by pulling the engine?

As we all know finding leaks can be tricky. In the diagnostics phase by two service companies (local MB tech and MB dealer) areas that were considered was oil sensor at pan (that was changed and vehicle still leaks), oil pan gasket (not changed and later said to not be leaking), cylinder head gasket passenger side (up in the air), valve covers (voted most likely) , and my suggestion which I wish I could have checked when I had the vehicle, was a Campaign No-2017100008_ Cam Shaft Cover leak 10 min fix. The last thing the dealer mentioned was a possible RMS leak but they didn't want to go there without replacing the valve cover gasket.

Currently the dealer is convinced its a valve cover leak and their process is to pulling the engine to replace the valve covers (not sure why engine needs to come out for valve covers but I wouldn't put it past engineers these days right?) and they said since the engines out they can check the RMS? For valve covers they want $13k with parts and labor? I don't have cost on RMS replacement. No warranty, they wanted $11k for an added 3yrs 30k and I said... Nah!

My head is spinning with all this back and forth with service techs and have no idea what to believe.

Questions for the group:
Valve cover gaskets requires an engine pull?
$13k for valve cover gasket replacement? AlldataDIY is saying 15hrs (@ $250/hr thats $3750)? RMS at hrs?
Anyone have any luck getting Mercedes to cover some cost? How much?
Anyone find ALLDATADYI useful for major service jobs they need to do themselves?

bobblehead

wow. you certainly have gone thru a lot more than some of us had in this RMS issue. My RMS & oil/air separators jobs are just shy of 30 hrs in all but not at $250/hr US .... I am in Canada, MB dealer rate is $182 ... so converted to US would be $135 range. In my case, no warranty and everything is out of my own pocket. Even if I have extended warranty, my dealer felt it would not be covered. Still not so sure if the US cars will be covered if you have extended warranty.

Sunbeltgolfer11

Interesting question. Seems someone looked at part numbers and there were not updated numbers for the separators. If those turn out to be the cause of the RMS problem I'm guessing we'll all experience the issue unless the separators are changed at some reasonable interval to prevent clogging.

JTS97Z28

My buddy and I did the engine oil on my ‘19 E63 with 38k miles the other day. We also removed the rear panel to inspect for RMS leak and it’s bone dry and clean back there. 👍🏼
he has a YouTube channel so here’s the vid which shows where the oil starts to drip from for those that haven't seen it.

Gsav

That’s a good channel!

Highline-Autos.com

Just a reminder we offer extended warranty coverage form both Fidelity and Freedom Warranty that cover the RMS and oil/air seperator issue on the E63s. You can reach me at tgibson@highline-autos.com or (855) 924-1333 for pricing and example contracts that explain coverage.

RevisionCuda

same as mine is 2020 , 20000 KM

HBerman

So, your RMS is now leaking on your 2020 E63S?

PeterUbers

he is saying he's waiting for the first 2020 to document a leak ... as his is a 2020 with 20k on the odo without a leak thus far.

sixfive

had a local independent 'look' at it (spent barely 5 minutes doing that) and said that RMS is leaking, still waiting for quote. Spoke with local dealer right afterward and he indicated its very unlikely that its leaking as he's hardly had any '19s to fix but certainly possible. Many other spots leak could be from. Made appointment to take her in and investigate by mechanic . . . we'll see what comes of it. Still about 10 days out for that . . . not overly optimistic about it obviously but it'll be interesting . . .

bobblehead

to diagnose the leak, the shop should add dyes into the oil, if it is rms, then the dyed oil would be seen. This is to eliminate other types of fluid leaks as being the issue.

SnoopLevine

Great idea - I did this in a preventative way, I changed my oil and used liqui moly 5w40 molygen. It glows bright when you use a UV flashlight on it

sixfive

very good idea! You suppose the dealer I'm taking the car to would take that recommendation into consideration and do it? Or is that something I should do personally BEFORE taking car to the shop?

bobblehead

If dealer really wants to isolate the issue, that is the proper step. By just visual checking is only a guess work and may cost thousands of $ in not needed service work. My MB dealer did such that in my first visit, then asked me to drive for a week and come back for further investigation and found it was indeed RMS issue.

sixfive

thats why I'm thinking I should add something to mine about a week prior to my appointment and when I take the car in, they might have a much more usable visual . . .

bobblehead

exactly. Just tell the dealer ahead of time. or you can consult with the dealer as to what color is best suited for this investigation.

For mine, dealer used a 'blood' red color. Not sure it means this is the best color or not ?

don't use food dye color though. hehe.

You probably can buy that in your local Auto parts store. If not, ask the dealer or buy from Amazon. It is in a small bottle.