Cam position sensors/magnets may be leaking oil
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Gle350
Cam position sensors/magnets may be leaking oil
My 2018 GLE350 with 40k miles looks to be starting to seep oil around the cam magnets (located on the front of the motor in the timing covers).
Has anyone changed these seals? If so, what parts (seals only or did you change the entire cam magnet) do I need?
Did you also remove, clean and reseal both timing cover plates at the same time?
How difficult is the job?
If anyone is holding it, I would love to get a copy of the WIS for changing the cam position senors, seals and the timing covers.
Thank you, as always, for taking the time to respond and for sharing your experience and expertise.
Has anyone changed these seals? If so, what parts (seals only or did you change the entire cam magnet) do I need?
Did you also remove, clean and reseal both timing cover plates at the same time?
How difficult is the job?
If anyone is holding it, I would love to get a copy of the WIS for changing the cam position senors, seals and the timing covers.
Thank you, as always, for taking the time to respond and for sharing your experience and expertise.
Last edited by Refugee18; Feb 2, 2025 at 10:43 AM.
Out Of Control!!
Joined: Sep 2018
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From: unbegrenzt
2017 GLE350 4MATIC
I looked and don't have WIS for sensors. WIS is attached for cylinder head cover sealant removal and M157 cam solenoid replacement. M276 is nearly the same steps.
Sensor and magnet replacement are trivial jobs. The challenge is gaining access. Note the screws need to be replaced and the torque spec is very low: 4Nm + 60 degrees.
Resealing the front cylinder head cover requires careful removal of old sealant with Loctite 7200 and avoiding damage of the textured surface from the manufacturing process. No sharp tools (gasket scraper)!
Sensor and magnet replacement are trivial jobs. The challenge is gaining access. Note the screws need to be replaced and the torque spec is very low: 4Nm + 60 degrees.
Resealing the front cylinder head cover requires careful removal of old sealant with Loctite 7200 and avoiding damage of the textured surface from the manufacturing process. No sharp tools (gasket scraper)!
Last edited by chassis; Feb 3, 2025 at 09:16 PM.
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
Likes: 4,569
From: unbegrenzt
2017 GLE350 4MATIC
4 sensors, 1 per cam, 2 per cylinder head. Sensors are installed in the cam cover, near the front, on the top.
Search feature will give you dozens of threads on this topic. W212 E-Class and W205 C-Class use the same engine.
Search feature will give you dozens of threads on this topic. W212 E-Class and W205 C-Class use the same engine.
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
Likes: 4,569
From: unbegrenzt
2017 GLE350 4MATIC
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GLE500
Just note that replacing the culprit parts does not prevent the issue from returning; the new part numbers also leak. Serious issues resulting from the leak are usually expected in high-mileage cars. In my M278 engine, I have installed four piggy tails from the camshaft sensors for additional prevention.
