**Cross post from w218 forum** p0357 code
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‘15 CLS63 AMG S
**Cross post from w218 forum** p0357 code
Hey guys, (posted in w218 cls63 forum, posted here for more views)
I have a 2015 cls63 (m157) , sits at 46k miles right now. I had a ecc slav stage 1 ecu/tcu tune (tuned it at 42,100 miles) and the tune ran beautifully, no issues, no codes, etc. I tuned back to stock a week ago to pass smog since I live in CA, and the car began misifiring a few days later at low rpms. I was in 5th gear going around 60 mph, not much load on the engine at all and the CEL came on, started flashing at me. Pulled over, turned engine on, off, waited a minute, turned it on and plugged in my scanner and it says p0357, p0300, p13c5 (misfire, low voltage coil codes).
I did spark plugs around 38k miles so I doubt it is those, injectors seem fine too since it's not running rich either. I'm replacing all ignition coil packs this weekend, any thoughts on what this may be? The car WAS tuned for 4k> miles, currently it is running stock tune.
I have a 2015 cls63 (m157) , sits at 46k miles right now. I had a ecc slav stage 1 ecu/tcu tune (tuned it at 42,100 miles) and the tune ran beautifully, no issues, no codes, etc. I tuned back to stock a week ago to pass smog since I live in CA, and the car began misifiring a few days later at low rpms. I was in 5th gear going around 60 mph, not much load on the engine at all and the CEL came on, started flashing at me. Pulled over, turned engine on, off, waited a minute, turned it on and plugged in my scanner and it says p0357, p0300, p13c5 (misfire, low voltage coil codes).
I did spark plugs around 38k miles so I doubt it is those, injectors seem fine too since it's not running rich either. I'm replacing all ignition coil packs this weekend, any thoughts on what this may be? The car WAS tuned for 4k> miles, currently it is running stock tune.
#2
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Mine did that ~the same mileage. It was a bad coil. I think they designed them to fail just after warranty, but clearly it wasn't perfect.
Mine would miss here and there at light loads, then over time more often and over a broader range of loads. Very annoying... You can replace the one and wait for the others to go one at a time, or do them all now.
I don't know if there are any coils for it not designed to fail, so I can't suggest a brand.
Mine would miss here and there at light loads, then over time more often and over a broader range of loads. Very annoying... You can replace the one and wait for the others to go one at a time, or do them all now.
I don't know if there are any coils for it not designed to fail, so I can't suggest a brand.
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a6itv (05-23-2024)
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2014 E63S; AMS 100 octane ecu tune; edok tcu tune; BB intakes; dyno tuned
Hey guys, (posted in w218 cls63 forum, posted here for more views)
I have a 2015 cls63 (m157) , sits at 46k miles right now. I had a ecc slav stage 1 ecu/tcu tune (tuned it at 42,100 miles) and the tune ran beautifully, no issues, no codes, etc. I tuned back to stock a week ago to pass smog since I live in CA, and the car began misifiring a few days later at low rpms. I was in 5th gear going around 60 mph, not much load on the engine at all and the CEL came on, started flashing at me. Pulled over, turned engine on, off, waited a minute, turned it on and plugged in my scanner and it says p0357, p0300, p13c5 (misfire, low voltage coil codes).
I did spark plugs around 38k miles so I doubt it is those, injectors seem fine too since it's not running rich either. I'm replacing all ignition coil packs this weekend, any thoughts on what this may be? The car WAS tuned for 4k> miles, currently it is running stock tune.
I have a 2015 cls63 (m157) , sits at 46k miles right now. I had a ecc slav stage 1 ecu/tcu tune (tuned it at 42,100 miles) and the tune ran beautifully, no issues, no codes, etc. I tuned back to stock a week ago to pass smog since I live in CA, and the car began misifiring a few days later at low rpms. I was in 5th gear going around 60 mph, not much load on the engine at all and the CEL came on, started flashing at me. Pulled over, turned engine on, off, waited a minute, turned it on and plugged in my scanner and it says p0357, p0300, p13c5 (misfire, low voltage coil codes).
I did spark plugs around 38k miles so I doubt it is those, injectors seem fine too since it's not running rich either. I'm replacing all ignition coil packs this weekend, any thoughts on what this may be? The car WAS tuned for 4k> miles, currently it is running stock tune.
check the sticky - lots on misfires and coils
https://mbworld.org/forums/w212-amg/...2-amg-e63.html
![](https://cimg3.ibsrv.net/gimg/www.mbworld.org-vbulletin/920x2000/img_6573_b929656cb1df96da15822a7e1a9e60eccc30cd55.png)
Last edited by PeterUbers; 05-23-2024 at 06:37 PM.
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a6itv (05-23-2024)
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2014 E63S; AMS 100 octane ecu tune; edok tcu tune; BB intakes; dyno tuned
Last edited by PeterUbers; 05-23-2024 at 06:35 PM.
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a6itv (05-23-2024)
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‘15 CLS63 AMG S
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No not headgasket, but leaking cam sensors or cam magnets causing oil to wick into harness, it can make it's way to other parts of the engine to cause shorts and havoc. Tasos posted a video of a g wagon m157 engine that has these issues. Very common and known issue across the entire mb lineup
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2014 E63S; AMS 100 octane ecu tune; edok tcu tune; BB intakes; dyno tuned
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JettaRed (05-24-2024)
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‘15 CLS63 AMG S
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2014 E63S; AMS 100 octane ecu tune; edok tcu tune; BB intakes; dyno tuned
is there oil in the wire harness?
are the plugs indexed appropriately?
have you thrown the tuned ecu back in - do the CEL's go away?
Last edited by PeterUbers; 05-24-2024 at 10:53 PM.
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‘15 CLS63 AMG S
Coil packs were the issue I guess. Will update if it goes wrong again
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2014 E63S; AMS 100 octane ecu tune; edok tcu tune; BB intakes; dyno tuned