M-Class (W166) Produced 2012-2015

2015 Ml350 help

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Old Sep 1, 2025 | 12:48 PM
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2015 ml350
2015 Ml350 help

Idk where to start with this one. Um. Cel cam on and ran a bunch of codes P0024, P054c, P0301, P0351, P2200Had changed the intake manifold gaskets as 2 were broken, changed a vacuum line in the back driver side, and the two driver side camshaft position sensors and all codes went away except, Poo24 and P2200. Changed magnetic sensors and car ran for a while let it sit. And now it wont start…any suggestions or help. If i have to change the timing chain I don't think I'd like that especially at only barely hitting 64k miles
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Old Sep 2, 2025 | 07:35 PM
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W212 MY'14 M276-3.5NA @75kMi
LOW MILEAGE PITA

Originally Posted by PopzMB
Idk where to start with this one. Um. Cel cam on and ran a bunch of codes P0024, P054c, P0301, P0351, P2200Had changed the intake manifold gaskets as 2 were broken, changed a vacuum line in the back driver side, and the two driver side camshaft position sensors and all codes went away except, Poo24 and P2200. Changed magnetic sensors and car ran for a while let it sit. And now it wont start…any suggestions or help. If i have to change the timing chain I don't think I'd like that especially at only barely hitting 64k miles
can you translate your OBD codes into useful descriptions?

The way this went from bad to a "no start" is strange...
Is it cranking?
Do you see gas pressure?
Is crank speed near adequate?


No worries about timing chains at 65kMi. Simply be sure to replace your favorite oil at 5kMi... Annual schedule is not enough.

Last edited by CaliBenzDriver; Sep 2, 2025 at 08:03 PM.
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Old Sep 3, 2025 | 05:26 AM
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2015 ml350
Originally Posted by CaliBenzDriver
can you translate your OBD codes into useful descriptions?

The way this went from bad to a "no start" is strange...
Is it cranking?
Do you see gas pressure?
Is crank speed near adequate?


No worries about timing chains at 65kMi. Simply be sure to replace your favorite oil at 5kMi... Annual schedule is not enough.
I put a battery pack on and boom. Strong start.
I changed the oil with Liquimoly bout a month ago and still I am getting codes CEL and definitely misfires which I think my next move will be plugs and coils. I can't believe at such low miles and hardly driven this would happen.
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Old Sep 3, 2025 | 11:43 AM
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W212 MY'14 M276-3.5NA @75kMi
all fixed up

Originally Posted by PopzMB
I put a battery pack on and boom. Strong start.
I changed the oil with Liquimoly bout a month ago and still I am getting codes CEL and definitely misfires which I think my next move will be plugs and coils. I can't believe at such low miles and hardly driven this would happen.
From no-start to strong start... is that drained batteries confirmed?

These chassis are quite sensitive to voltage variations. Try to keep your batteries well charged, don't use "engine stop/start" (ECO).

Ignition parts must be kept reliable. Mandatory tune-up is every 50kMi.
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Old Sep 4, 2025 | 11:27 AM
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2013 Mercedes GL350 Bluetec (X166) & 2019 Mercedes A220 (W177) & Retired 2008 Mercedes C300 (W204)
Has the battery been replaced? It does seem like the battery may be part of the issue. I have noticed in the 5 different Benz's within our family, that 7 years seems to be the approx timeframe when the battery starts giving trouble.

As CaliBenzDriver mentioned, these vehicles are sensitive to voltage variations.
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Old Sep 5, 2025 | 10:29 AM
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Originally Posted by CaliBenzDriver
...Simply be sure to replace your favorite oil at 5kMi... Annual schedule is not enough.
Wow, I guess I've gotten pretty lucky over 20+ years, 13 Mercedes, and hundreds of thousands of miles following Mercedes 1 year/10,000 miles recommendation.
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Old Sep 5, 2025 | 02:37 PM
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W212 MY'14 M276-3.5NA @75kMi
it is simple....

Originally Posted by eddieo45
Wow, I guess I've gotten pretty lucky over 20+ years, 13 Mercedes, and hundreds of thousands of miles following Mercedes 1 year/10,000 miles recommendation.
You likely read one of your MB owner manuals...
annual service on normal duty
Severe duty is a shorter schedule.

City driving burns oil into sludge
highway cools engine well.

5kMi is still a smart choice even best oils.
1Yr oil schedule okay based on use.
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