chassis

MB dealers truly are scum, aren't they?

I caught an MB SA lying to me and he looked like a little girl piddling her pants and looking for her mommy when he realized he wasn't going to get away with his blatant lie. He was a bit young and not very practiced lying, evidently.

Glad you got the vehicle out of there and back on the road.

ffejnotrom

MOST dealers are scum. Lol. Not just MB….

when it blows out again I’ll be there bright and early in the morning to get my new free rear main seal which will restart my 2 year unlimited mile warranty on THAT rear main seal. Lol. Replay that game as long as I have to. And if they try to pull the “well you declined the repair for the oil separators” I’ll be the first one with the email and texts in hand from the service advisor telling me “well the oil separators causing this is purely anecdotal, no way to know if that was the cause so we can’t cover it”

😂😂 ….. “well when you barked at me that it was anecdotal, when I diagnosed it for you, and the oil separators causes this…. you told me you wouldn’t cover it, because it’s anecdotal…. I ’ll be sure to remind you it’s still anecdotal now also, and if MB issues a TSB for the oil separator between now and then, then looks like those will be replaced free also. So when that time comes I’ll tell you to go ahead and put a new rear main seal in for me, free of charge of course”

3.Pointed.Czar

Juts piggybacking on this thread to ask, is the RMS/oil separators a common issue with the G? I know someone mentioned it was more of an issue with 2019-2020 models but has this since been rectified with a better part? Is it something to watch out for and make sure gets looked at while still under factory warranty? Expecting delivery around May and mine will be a 2024 for reference.

ffejnotrom

From what it appears its a common issue on any (or most) MB the use the M177 motor, possibly others. I dont know all of them off the top off my head, but it appears to be an issue with at least the 4.0L TT V8 that is in the G63, E63, GLE63, GLS63 etc. However, there is other reports on here like below on the "suggested, or related " posts, and one is a g550 2016, had the same issue. I think the most common are the 2018-2020 w177 motors, which is whats in my 2019 G63, maybe they changed something on 2020+ models, not sure. But most threads on here ive found are either 2018 E63, or 2019 G63.

So with that said, I dont think it has anything to do with the G63 specifically, it has to do with the MB M177 motor.

Chedman13

The sound is a constant hum/whine - almost like a supercharger belt wine. So I actually thought it was a belt going bad or needing some lubrication.

It didn't happen all the time. Sometimes it did it the entire drive, other times zero sound.

chassis

It is showing up on all 4.0TTV8 installations. Early examples on E63, now G-Wagen, I think a C-Class also was reported on this site. Haven't seen S-Class or GLE-/GLS- reports yet.

ArthurMBZ

I am having the same problem on my 2019 S560 with 53,000 miles. Oil separator failed causing the rear seal to leak. Now dealership is telling me $ 8,450 repair cost they have to remove the engine and transmission to repair.

chassis

Sorry to hear. Any possibility to get a second quote from an indy shop?

ArthurMBZ

I got a quote from Indy shop and they are asking 7K

Its just wrong MBUSA is not taking responsibility for the failed oil separator which caused this massive repair bill

Chedman13

FYI for future maintainence, talking with my mechanic - the air/oil separator will all fail, ranging from 20k-50k miles. Once these fails, it's almost an immediate failure of the rear main seal due to the negative pressure created to suck in the rubber O-ring, then which causes the leak.

So the repair is putting in new air/oil separators and new rear main seal gasket.

After this is done, and you're out of warranty - he suggested to proactively change the air/oil separator around 20-30k miles to avoid the rear main seal leak. Since the M177 engine has a lot of stuff up front to remove, when you're in there - you might as also replace the thermostat if you haven't already as those also fail around 40k miles and is a lot of labor if done separately.

chassis

Another MB engine which has earned the “do not buy” label if intending to own long term.

3.Pointed.Czar

Does anyone know if the oil separator/RMS issue has been resolved for the facelift? MBUX and cooled/heated cupholders are cool and all, but I sincerely hope this was one of the first things they looked at but I dont have much hope.

PeterUbers

there is no definitive evidence from anybody in Mercedes that this is resolved in anyway. There are reports in the W-213 AMG form that there are new part numbers for the separators that are being installed during the new repairs, but this does not suggest that this has been fixed definitively. Only time will tell how the 2023 models and beyond will do when they hit around 25 to 40,000 miles.

in fact, an aftermarket company is working on the E63 platform to create what they think is a definitive solution, way ahead of Mercedes, who doesn't even acknowledge that this is an official problem.




https://www.63motorsports.com/amg-bl...er-m177-update

Great info on e63 rms issue / must read

abhatti55

I think the start/stop eco system has a lot to do with it.

ffejnotrom

I'll add to this since I replied this time last year on this on my 19 G63.

I had the RMS replaced, and when they wouldn't replace the OVS under warranty I told them to F OFF. I also told them that since MB Dealers are mandated to include a 2 yr, unlimited mile warranty on repairs, that the good news for me is, if the RMS goes out AGAIN soon after it was replaced (since I did not change out the OVS) then they could just go ahead and replace the RMS again, for free. And they can keep doing this over and over and over until they actually fix the cause under warranty which is the OVS. The RMS is an effect, not the cause.

ill also note, it was about a year ago I had this done, i've put about 10k miles on the car since then and ive seen no oil drops, and no signs of another RMS failure, (yet). Even with out replacing the OVS.

Now I suppose its entirely possible they cleaned out the OVS, or maybe they did replace them and just didnt want to tell me ( both of these are doubtful of course)... BUT... I haven't had a NEW RMS leak occur (yet). With my luck it'll blow again just after the 2 year mark. But I doubt I'll have the car that long anyway.

MB knows damn well whats going on. They just give us all a fat middle finger.

In fact, it's well documented internally. They know. There is literature on it. they just wont give it to you. internal only. And part of it is HOW they properly diagnose it. Because of the specific way the RMS blows, it's a tell tale sign of a OVS failure if it sucks in, vs a more obvious blow out, or defective RMS. If it sucks in like that, thats how MB has identified it is indeed an OVS issue. They just wont fix the OVS. Even though it SHOULD have a 8yr 80k emissions warranty... but they covered themselves on that end also. By the OVS being one of like 2 or 3 parts of the emission system that is NOT covered under the 8/80k emission warranty.

MB executives are scum bags. Plain and simple.

IF we want something happen there needs to be a class action lawsuit. But doubt that'll happen.

chassis

Thanks for the update.

MB does not stand behind its products, the M17x OVS and RMS failure is one of many examples.

VAG/Porsche on the other hand is better. Not perfect, but better. 992 911 and early 9Y0 Cayenne were factory build with LiFePO4 batteries which often fail in less than 4 years because of electronic module failure built into the battery. The battery itself costs up to $2,000 at the dealer, and the dealer charges $1,000 for installation and coding.

When the failures started, Porsche did not help owners. Because the failures are relatively widespread, Porsche is covering LiFePO4 battery replacement under the emissions warranty.

Porsche ownership experience = far better than MB ownership experience.