Crankshaft Position Sensor Location R171 SLK55 - Mercedes Benz SLK Forum

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#1 Old 07-11-2013
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Crankshaft Position Sensor Location R171 SLK55

My CPS just recently took a dump on me, so I ordered one from OEDiscountparts.com. While trying to figure out where the devil the thing goes I finally found a picture that showed me exactly. I thought y'all might like to see this photo too, incase you have yours go out. BTW I also took a chunk of my knuckle out too whilst having my hand in the back of the engine bay. I won't show that picture
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#2 Old 07-11-2013
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Were you able to do the adaptation (with SDS) after replacing the Crankshaft Position Sensor?

IIRC, it may be easier if you are able to remove the hot film MAF assembly (as shown missing in the photo) and cutting the plastic tie that holds the wire leading to the CPS.

Just had mine replaced last week.

Eddy



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#3 Old 07-12-2013
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This is not exactly the same engine as in the SLK but the principal ( and location ) are the same:- https://www.youtube.com/watch?v=KTTM3VeJuA8

Hope thats useful for someone

Chris
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#4 Old 07-12-2013
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Originally Posted by thirteendog View Post
My CPS just recently took a dump on me, so I ordered one from OEDiscountparts.com. While trying to figure out where the devil the thing goes I finally found a picture that showed me exactly. I thought y'all might like to see this photo too, incase you have yours go out. BTW I also took a chunk of my knuckle out too whilst having my hand in the back of the engine bay. I won't show that picture
Not quite sure about the photo. Is this the back of an M272 engine? I do not recall the two black round plugs at the left bank of the M113 engine.

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#5 Old 07-15-2013
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Originally Posted by etyu View Post
Were you able to do the adaptation (with SDS) after replacing the Crankshaft Position Sensor?

IIRC, it may be easier if you are able to remove the hot film MAF assembly (as shown missing in the photo) and cutting the plastic tie that holds the wire leading to the CPS.

Just had mine replaced last week.
I removed the MAF, but it wasn't necessary. I slid the sheath that covers the connection up cable. I think that's what you're asking me about.

I saw that video but it left me more confused because it doesn't show anything.
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#6 Old 12-03-2014
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Thanks for the image thirteendog, it was most helpful in replacing my own CPS today! <3 <3 <3
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#7 Old 12-04-2014
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Thanks for the image thirteendog, it was most helpful in replacing my own CPS today! <3 <3 <3
I'm glad I could help!
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#8 Old 02-25-2016
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CPS failures...Twice! I've owned two 2006 SLK AMGs. Both around 70k miles. Both had CPS failures. Is there a Service Bulletin on these? Is this a known issue, that should be highlighed to replace on an appropriate check? I'm very displeased to be left stranded suddenly in the middle of the road!! Extremely unsafe. Shelled out over $500 bucks each with towing and shop fees.
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#9 Old 02-28-2016
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What are the symtoms and error code when this occurs. Just curious for future reference.

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#10 Old 02-28-2016
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What are the symtoms and error code when this occurs. Just curious for future reference.

Thanks
From my experience:

Initially,the engine stalled without warning. I pulled off to the side, turned off ignition, waited a few minutes and restarted the vehicle. Engine restarted and car ran fine except CEL warning light showed up. It was late in the evening, so I just turned off the engine after parking in home garage. Next morning, the engine started fine and CEL warning light disappeared. Talked to MB service advisor and he recommended observation as the CEL light went away.

A week later, while getting on the the off-ramp from freeway, engine stalled with our warning. I was able to cruise and get into the "emergency" lane at the side of the off-ramp. This time turning off the ignition and restarting did nothing. Engine would crank and nothing else would happen. Had to MB roadside assistance and they sent flat bed tow truck and got it into MB shop in mid-evening.

Next morning, service advisor said the Crankshaft Position Sensor was "toast", i.e., non-functional.

Vehicle had 64,187 miles, and one month shy of 6 years of ownership from new, single driver.

From the Invoice: "Engine test with DAS, code P2034-008. Test individual components per Diagnostic Trouble Code (DTC), crankshaft position sensor failed resistance test (56 MegaOhms MΩ when heat is applied). Replaced crankshaft position sensor, reset rotor adaptation and test drove car."

Currently the 2008 SLK55 has 87,610 miles, and 8.5 years of ownership from new, single driver, used almost daily.

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#11 Old 02-28-2016
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Originally Posted by Cat View Post
... Shelled out over $500 bucks each with towing and shop fees.
I feel your pain.

Eddy



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#12 Old 02-29-2016
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There used to be a member on this Forum named Dan, who was very savvy on our cars and associated Service Bulletins and Technical issues. Is he still on? I'm asking, "Is there a Service Bulletin on these? Is this a known issue, that should be highlighed to replace on an appropriate check?". This is an extremely unsafe issue for us owners. The symptoms described higher in this thread are exactly what I have experanced...ON BOTH SLK AMGS.
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#13 Old 02-29-2016
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Quote:
Originally Posted by Cat View Post
There used to be a member on this Forum named Dan, who was very savvy on our cars and associated Service Bulletins and Technical issues. Is he still on? I'm asking, "Is there a Service Bulletin on these? Is this a known issue, that should be highlighed to replace on an appropriate check?". This is an extremely unsafe issue for us owners. The symptoms described higher in this thread are exactly what I have experanced...ON BOTH SLK AMGS.
Dan is no longer here. He has checked in very infrequently

https://www.slkworld.com/ask-dansslk/...rmanently.html

The Ask Dan section has been closed permanently as Dan has not returned.
We hope he is ok and will return someday.
He was last seen on Last Activity: 01-20-2015

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