Fellow S550 owners, please take a minute to read this thread...
02-26-2023 | 02:06 PM
#27
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Joined: Jul 2011
Posts: 154
Likes: 48
From: St. Louis
2015 S550, 2014 640i
Took a moment to check out one of my cam sensors and well... let the picture speak for itself. Only thing I can a bit annoyed that i did was I broke a clip on the harness (right side of the yellowish piece) so I took a small piece of electrical tape and wrapped it around the cam sensor and pushed it back into the harness since a small clip that holds it broke so ill have to add this to the list.
02-26-2023 | 02:40 PM
#28
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Joined: Jan 2015
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15 S550 4Matic, 86 560SL
Took a moment to check out one of my cam sensors and well... let the picture speak for itself.
Only thing I can a bit annoyed that i did was I broke a clip on the harness (right side of the yellowish piece) so I took a small piece of electrical tape and wrapped it around the cam sensor and pushed it back into the harness since a small clip that holds it broke so ill have to add this to the list.
Only thing I can a bit annoyed that i did was I broke a clip on the harness (right side of the yellowish piece) so I took a small piece of electrical tape and wrapped it around the cam sensor and pushed it back into the harness since a small clip that holds it broke so ill have to add this to the list.
One important question here - what is your mileage?
Because the part does not exist out of eBay. There is no known manufacturer for it outside of ZZPerformance.
02-26-2023 | 02:50 PM
#29
Member
Joined: Jul 2011
Posts: 154
Likes: 48
From: St. Louis
2015 S550, 2014 640i
So if we dont see any oil as of yet then simply installing the harnesses on top and bottom will suffice correct?
02-26-2023 | 04:24 PM
#30
Thread Starter
MBWorld Fanatic!
Joined: Jan 2015
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15 S550 4Matic, 86 560SL
Correct. That being said, from the data I’ve seen both the sensors and phasers leak by 70-80k miles. So if you’re close, I’d go ahead and replace them.
02-26-2023 | 06:22 PM
#34
Senior Member
Joined: Jan 2019
Posts: 495
Likes: 194
From: Palm Beach, Fl
2016 S550 sport, 2018 GLC300, M3, Zo7, 2021 Sierra Denali
03-01-2023 | 01:11 PM
#35
Senior Member
Joined: Aug 2011
Posts: 356
Likes: 19
From: RI
2017 S550 4matic
bought a kit, figure it's cheap insurance given I'm only at 12k miles but it is a 2017. Does this tend to be more mileage related due to mechanical wear or is it time related like seals going bad?
03-02-2023 | 08:31 PM
#37
Member
Joined: Jul 2011
Posts: 154
Likes: 48
From: St. Louis
2015 S550, 2014 640i
Last edited by Rmayrap; 03-02-2023 at 08:35 PM.
03-02-2023 | 10:52 PM
#38
Senior Member
Joined: Jan 2019
Posts: 495
Likes: 194
From: Palm Beach, Fl
2016 S550 sport, 2018 GLC300, M3, Zo7, 2021 Sierra Denali
I received the ZZperformance kit and will be doing the install this week. The quality is very nice. we shall see if there is oil in there, I am at 48K? Thanks again for all the info.
03-03-2023 | 01:28 AM
#39
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Joined: Jul 2011
Posts: 154
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From: St. Louis
2015 S550, 2014 640i
I would say mileage related since most are showing signs of leaking after 50k
03-03-2023 | 04:27 AM
#40
Out Of Control!!
Joined: Sep 2018
Posts: 13,555
Likes: 4,043
From: unbegrenzt
2017 GLE350 4MATIC
Oil in harness, not new news.
Affects M274/276/278/157 engines.
Fixable with new sensors and magnets. Pigtails are a bandaid and do not address the root cause. But are helpful.
Affects M274/276/278/157 engines.
Fixable with new sensors and magnets. Pigtails are a bandaid and do not address the root cause. But are helpful.
03-03-2023 | 06:35 AM
#41
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Joined: Jan 2015
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15 S550 4Matic, 86 560SL
Unfortunately even the newest revision parts still leak. So I would not say it is entirely “fixable” and the pigtails are just another layer of protection.
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seamus2154 (03-03-2023)
03-03-2023 | 09:09 AM
#42
Senior Member
Joined: Aug 2011
Posts: 356
Likes: 19
From: RI
2017 S550 4matic
At 12k miles I can easily justify the $100 to throw the pigtails at it instead of adding pigtails, sensors, and magnets if I don't really need all of it.
03-03-2023 | 03:53 PM
#43
Junior Member
Joined: Dec 2022
Posts: 25
Likes: 14
From: Oregon
2014 S550 4Matic, 2015 ML400 4Matic, 2019 E450 4Matic Wagon
Well obviously I'm a newbie and an idiot because I can't even get the electrical connectors to release. What is the trick? Stand on 1 leg and stick my tongue out
03-03-2023 | 03:59 PM
#44
Member
Joined: Jul 2011
Posts: 154
Likes: 48
From: St. Louis
2015 S550, 2014 640i
unlock by pushing the white pin away from the plug with a flat head carefully then press down on the released pin and pull away.
03-03-2023 | 04:23 PM
#45
Junior Member
Joined: Dec 2022
Posts: 25
Likes: 14
From: Oregon
2014 S550 4Matic, 2015 ML400 4Matic, 2019 E450 4Matic Wagon
YOU Sir are a Gentleman and a Scholar! I've been dinking around with those connectors for 2 hours. I now have 4 sacrificial pigtails installed. Fortunately no oil in any of them. Only 49k on my S550 so that may have helped.
Thank you very much!!
Thank you very much!!
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Rmayrap (03-03-2023)
03-03-2023 | 04:36 PM
#46
Member
Joined: Jul 2011
Posts: 154
Likes: 48
From: St. Louis
2015 S550, 2014 640i
you're welcome. Did you install only the sensor harness or only the magnet? I would do both if I were you.
03-03-2023 | 04:46 PM
#47
Junior Member
Joined: Dec 2022
Posts: 25
Likes: 14
From: Oregon
2014 S550 4Matic, 2015 ML400 4Matic, 2019 E450 4Matic Wagon
I installed the pigtails on the magnets only. it appears that the sensors are 3 wire and the sacrificial pig tails for the madness are 2 wire
03-03-2023 | 06:54 PM
#48
Member
Joined: Jul 2011
Posts: 154
Likes: 48
From: St. Louis
2015 S550, 2014 640i
