2012 CLS 63 Mis Fire- Cam Sensors
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2012 CLS550 AMG Pkg
Thanks for reporting back. I suspect I have the exact same issue. Especially considering I am getting associated O2 sensor warning messages in the same bank each time the C/E light returns after resetting. How did you know it was just one bad one? You tested them?
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2013 CLS63 AMG P30 EuroCharged Tuned; 2005 Dodge Viper Supercharged - 850 HP:
All other spark plugs were good.
I would definitely recommend you try that. It was a pain removing the spark plugs at first but once I got the hang of it, it wasn't too bad.
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2012 CLS550 AMG Pkg
When I took the spark plugs out, the bad spark plug's ceramic insulator that surrounds the electrode (the white part around the electrode) was not held in its place anymore. It had come loose and moving up and down the electrode. So, when it moves up, it covers the electrode and doesn't allow the spark to go out of the ceramic insulator. The absence of spark will result in not igniting the air/fuel mixture and cause the misfire.
All other spark plugs were good.
I would definitely recommend you try that. It was a pain removing the spark plugs at first but once I got the hang of it, it wasn't too bad.
All other spark plugs were good.
I would definitely recommend you try that. It was a pain removing the spark plugs at first but once I got the hang of it, it wasn't too bad.
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2013 CLS63 AMG P30 EuroCharged Tuned; 2005 Dodge Viper Supercharged - 850 HP:
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Too many german broads
Just adding my input here to help others, even though it is from a M278. Replace those Cam sensors and Cam valve solenoid magnets if you have the old part numbers!!! I can't believe Mercedes never did anything about recalling these parts. Changing these $300 worth of parts can save many potential headaches later! My wiring harness was already replaced long ago under warranty for leaking injectors but of course dealer never replaced these sensors...Dealer is never looking out for you!
MBWorld God!
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2012 CLS63
Just adding my input here to help others, even though it is from a M278. Replace those Cam sensors and Cam valve solenoid magnets if you have the old part numbers!!! I can't believe Mercedes never did anything about recalling these parts. Changing these $300 worth of parts can save many potential headaches later! My wiring harness was already replaced long ago under warranty for leaking injectors but of course dealer never replaced these sensors...Dealer is never looking out for you!
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2013 Cls63
T30 and comes right off
Loaded with oil, Yuk
Oil from inside the plug, Yuk!
Clean these plugs off very well!
This is the part number you need!
Get good electrical plug cleaner
You need 4 of these, this part number! Time will tell if these are manufactured better than the o es taken out.
DO NOT BUY or get these sold to you, DEMAND part number 276 905 1000.
If you have a 2012-2013 CLS 63 AMG read this and know this, your 4 Cam sensors need changed if you have not changed them yet. My car is verywell maintained never tracked never abused and has 55,000 Miles. Last week the CEL, check engine light came on as the car shuttered shook and had no power. Code says misfire 1,5,7,8,,,,, no sweat spark plugs are original let’s change them. Sweet ,problem fixed. Right? Wrong.
The next night same thing happens. CEL comes on;reader says same misfire.
Side note while changing my plugs earlier, my buddy says to me HOW did you get oil back here? I see no leaks or anything..... we are both �� stumped. Some of you experienced guys already know where this is going! Back here is irrelevant in location but always ominous in nature, oil where it shouldn’t be!
Read ,research ,read meet 6speeddave here on this forum and BAM he puts me on it; after 3-4 years these cam sensors leak and oil gets everywhere and causes all kinds of issues!
If you have the original Cam Sensors I. Your car change them now the OLD part number is 276 153 0028 The NEW part number is 276 905 1000.
MAKE SURE you check the new part number on the sensor stem MB dealer actually sold me 1 sensor marked as the new 276 905 1000 number while it was # 276 153 0028—. I am taking it back tomorrow to swap and finish the job.
Here is a question did MB enhance this sensor? Does the new part number mean it is improved and will not leak? Time of course will tell. Maybe it’s just a 3 year 30-40k change out!
About 50 bucks a piece and super easy change out. I have several pics to post.If you have any questions send me a PM call me whatever I can do to help you let me know.
The main take away is this: change these Cam censors before they cause you BIG problems. Make checking them a part of your annual inspection?Bi annually? Something!
The next night same thing happens. CEL comes on;reader says same misfire.
Side note while changing my plugs earlier, my buddy says to me HOW did you get oil back here? I see no leaks or anything..... we are both �� stumped. Some of you experienced guys already know where this is going! Back here is irrelevant in location but always ominous in nature, oil where it shouldn’t be!
Read ,research ,read meet 6speeddave here on this forum and BAM he puts me on it; after 3-4 years these cam sensors leak and oil gets everywhere and causes all kinds of issues!
If you have the original Cam Sensors I. Your car change them now the OLD part number is 276 153 0028 The NEW part number is 276 905 1000.
MAKE SURE you check the new part number on the sensor stem MB dealer actually sold me 1 sensor marked as the new 276 905 1000 number while it was # 276 153 0028—. I am taking it back tomorrow to swap and finish the job.
Here is a question did MB enhance this sensor? Does the new part number mean it is improved and will not leak? Time of course will tell. Maybe it’s just a 3 year 30-40k change out!
About 50 bucks a piece and super easy change out. I have several pics to post.If you have any questions send me a PM call me whatever I can do to help you let me know.
The main take away is this: change these Cam censors before they cause you BIG problems. Make checking them a part of your annual inspection?Bi annually? Something!
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From: Florida
Too many german broads
replaced my plugs last year when I first had the misfire issue. Just did my cam sensors and cleaned the plugs but still getting issue. My car has 100k miles so I'm sure the harness has got a lot of oil. Not sure what to do, get a misfire and limp mode when I get hard on the throttle, typically above 60 mph or so.... other than that I don't really have any issues with idle etc
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2013 Cls63
Yep, checked the ECU and cleaned those connectors also, although they had a lot less visible oil that the cam sensor connectors. I may not have cleaned the cam sensor connectors well enough. Can you explain the best technique of using the spray to clean connectors?
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Too many german broads
The ECU can handle the oil to a point, but if you're saying it had less visible oil then that's good. You replaced all the cam sensors with the updated parts? What about the cam magnets? If there is just too much oil in the harness, it just will continue to be a problem - in other words, it may be too late.
Last edited by OnlyGerman; Feb 17, 2021 at 06:36 PM.
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2013 Cls63
I do not believe there is any special method other than just getting them at a good angle. The ECU can handle the oil to a point, but if you're saying it had less visible oil then that's good. You replaced all the cam sensors with the updated parts? What about the cam magnets? If there is just too much oil in the harness, it just will continue to be a problem - in other words, it may be too late.
Edit: so I just looked up the part and I remember seeing at least one of those lol.. ill pull those connectors and give then a good spray also... and maybe go back in and give them cam sensor connectors another spray down
Last edited by hyundaimg; Feb 17, 2021 at 06:39 PM.
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Too many german broads
The magnets are very visible, search for part # 276-156-07-90, which is also the updated #, if yours is the 04-90, change it. The cam sensors should be 276-905-10-00. If they are the old ones, you have to change them, as they are the cause for this mess.
Last edited by OnlyGerman; Feb 17, 2021 at 06:45 PM.
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09E350, 07E63, 13CLS63
Very interesting thread. No CEL nor rough idle, just checked for precaution. Found some oil in the lower portion of the sensor but no oil passing the the seal, no oil in the plug. I think she is okay, right?
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2012 CLS63
But keep an eye on that.
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Too many german broads
If you have the old cam sensor part #s, change them out, then you won’t have to worry about it.
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09E350, 07E63, 13CLS63
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Too many german broads
yes. You need 4x of 276-156-10-00 AND change your cam solenoids as well with 4x 276-156-07-90
MBOEMPARTS.COM seems to be the cheapest
You can continue to monitor or change them all out now for piece of mind. As time goes on, the old sensors will leak.
MBOEMPARTS.COM seems to be the cheapest
You can continue to monitor or change them all out now for piece of mind. As time goes on, the old sensors will leak.
Last edited by OnlyGerman; Feb 22, 2021 at 02:20 PM.
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09E350, 07E63, 13CLS63
I'm sorry, I am not cars techie, where are those solenoids located? Photos would help. Thanks.
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Too many german broads
https://mbworld.org/forums/gl-class-...aking-oil.html
see post #1. part # is in direct visible view, you most likely have the older number for that as well.
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2013 Cls63
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Too many german broads
The solenoids leak inside the connector as well, need to remove connector to check. I do not think you understand the severity of getting the old ones switched out. Better now than leaking into your harness, causing upwards of 5k of damage.
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09E350, 07E63, 13CLS63
Replacing those solenoids require removing of oil filter housing, AC pipes, wires ..... Just got a quote around 2.5 hrs labor. I can replace the cam sensors myself but not the solenoids.
