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SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

P0025 2008 SL550

 
Old 03-12-2019, 06:14 PM
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P0025 2008 SL550

Driving back home and the dreaded CEL came on, stopped by Autozone and got it scanned and it issued this code. P0025 Exhaust Camshaft Position Timing - Over-Ratarded (Bank 2). Have any of had this issue and how was it resolved? I also noticed that Sport mode was engaged at the moment.

Thanks in advance.
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Old 03-12-2019, 06:24 PM
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Check out this guy's issue. It seems the same as yours.

Good luck!

https://mbworld.org/forums/m-class-w...ixed-pics.html

Last edited by Eric79; 03-12-2019 at 06:24 PM. Reason: link
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Old 03-12-2019, 06:28 PM
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Originally Posted by Eric79 View Post
Check out this guy's issue. It seems the same as yours.

Good luck!

https://mbworld.org/forums/m-class-w...ixed-pics.html
Thanks, Iíll check it...
The only thing is, thatís for a different vehicle, Iím not sure if it applies.

Last edited by kemzo; 03-12-2019 at 06:30 PM.
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Old 03-12-2019, 08:52 PM
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Replace Camshaft Adjuster Magnet

I'm pretty sure you need a camshaft adjuster magnet. I had the same thing go out on my '07, but on bank 1 (RH from drivers position). Fortunately, they are very inexpensive and very easy to install.

Amazon Amazon


Visit this discussion for some great information from a few that understand this better.

https://mbworld.org/forums/sl-class-...rror-code.html
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Old 03-12-2019, 09:32 PM
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Originally Posted by Bhopkins View Post
I'm pretty sure you need a camshaft adjuster magnet. I had the same thing go out on my '07, but on bank 1 (RH from drivers position). Fortunately, they are very inexpensive and very easy to install.
Iíve already ordered two, do you know if mine is on the passenger side, based on the description? I really need to do this myself. Thanks!
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Old 03-12-2019, 10:41 PM
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Go ahead and replace all four. It; scenario #2 in this TSB:

http://benzbits.com/BalanceShaftTSB.pdf

You will probably need to remove the oil cooler to replace the left bank exhaust so you'll need a gasket for that (plus you'll want to drain a bit of coolant so you don;t make a mess). Othewise, this is an easy job with just a bit of wrenching.
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Old 03-12-2019, 10:52 PM
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Originally Posted by kemzo View Post
Iíve already ordered two, do you know if mine is on the passenger side, based on the description? I really need to do this myself. Thanks!
It is the exhaust on the LH (US Driver's) side. Take a few minutes to study the graphic that Rodney provided in post #12 in the link I attached above. It is very helpful.


Originally Posted by Rudeney View Post
Go ahead and replace all four. It; scenario #2 in this TSB:

http://benzbits.com/BalanceShaftTSB.pdf

You will probably need to remove the oil cooler to replace the left bank exhaust so you'll need a gasket for that (plus you'll want to drain a bit of coolant so you don;t make a mess). Othewise, this is an easy job with just a bit of wrenching.
Rodney, I've noticed that on a number of occasions, you have recommended replacing all four at the same time. What is your reasoning? It would seem reasonable to think that if one has failed the others may not be far behind, and they really aren't that expensive. Is there more to it?
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Old 03-13-2019, 10:24 AM
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The reason you have to replace any of them is that there was a manufacturing defect that causes them to fail. I think what happens is that oil gets inside of them and shorts them out. I guess you could replace them as they fail, but you can get all four for about $100, and other than the one behind the oil cooler, it takes just a few minutes to swap them, so why not just do them so you have no worries about future failures?
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Old 03-13-2019, 10:56 AM
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Originally Posted by Rudeney View Post
you can get all four for about $100, and other than the one behind the oil cooler, it takes just a few minutes to swap them, so why not just do them so you have no worries about future failures?
Understood! Iíll try to replace the ones I can reach and let my mechanic do the messy one, since I donít have an adequate space to do the job.

On a side note, I drove the car this morning to work, itís a 40 mile drive and once I arrived at work, the CEL is no longer displayed, maybe itís a fluke, still replacing them before my appointment with the dealership on Saturday for alignment.
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Old 03-15-2019, 08:34 AM
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Update!

I went ahead and replaced the two by the drivers side, I think that the car drives fine, since replacing them, or maybe itís in my head 🤣. Iíll be ordering two more for the passenger side. I read that it is advisable to also replace the ďCamshaft Position SensorĒ, when replacing the Camshaft Adjuster Magnets. Is that so? Amazon suggested those and I ordered two but my mechanic advices me not to do it, maybe it might require reprogramming. So, I still have them... Donít want to rock the boat 😀
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Old 03-15-2019, 11:32 AM
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No, the sensors rarely fail. And they are costly - I think $200+ each. BTW, here's a diagram showing which solenoid throws which OBDII error. This is from the perspective of standing in front of the engine and looking back at the car. But, as I said, you really should replace all four as the original parts used were defective.

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Old 03-15-2019, 11:46 AM
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Originally Posted by Rudeney View Post
No, the sensors rarely fail. And they are costly - I think $200+ each. BTW, here's a diagram showing which solenoid throws which OBDII error. This is from the perspective of standing in front of the engine and looking back at the car. But, as I said, you really should replace all four as the original parts used were defective.
Thanks, Iíve already replaced two, and sure enough, I replaced the right ones, and Iíve already ordered two more for the other side. The sensor I was referring to, is attached below.
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Old 03-15-2019, 08:07 PM
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That's probably fake. Amazon and eBay are so full of fake Bosch parts, I;d never consider buying there. The OE part is over $150:

https://www.mercedespartsdelivered.c...QtMTUzLTk2LTI4

But like I said, those rarely fail.
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Old 03-15-2019, 08:39 PM
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Originally Posted by Rudeney View Post
That's probably fake. Amazon and eBay are so full of fake Bosch parts, I;d never consider buying there. The OE part is over $150:

https://www.mercedespartsdelivered.c...QtMTUzLTk2LTI4

But like I said, those rarely fail.
Wow! I wonít install it. The Camshaft Magnets was shipped by a local Mercedes dealership by me.
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