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Old 05-25-2009, 01:52 PM   #1 (permalink)
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Date registered: Aug 2002
Vehicle: Black 2005 ML 500
Location: Galveston, TX
Posts: 1,662
P0335 Crankshaft Position Sensor A Circuit

Well finally the CPS cr@p happened to my 2005 ML 500, at 78,000 miles.

I was at a car dealer looking at cars for my wife. As we were leaving, I tried to turn on my ML(engine hot), it started but it immediately died with no error messages of any kind.

I thought this was very strange because once it starts, my ML always stays on. I had a similar problem fixed long time ago, where I will get a "start error" message displayed on my instrument cluster display, but the DAS module was replaced and this problem was fixed(below is the link to that problem).

http://www.benzworld.org/forums/w163...e-display.html

So I tried to start it again, and it started normally. While driving down the highway, I got an engine light. When I got home, I connected my OBDII scanner, and I got:

"P0335 Crankshaft Position Sensor A Circuit"

I guess I am going to have to search our forum for the instructions on how to change it, or if I don't have time, I will have to have the stealership perform this repair..

Any recommendations from anybody who have replaced their CPS's..? It's amazing to see the bad quality of these sensors that Mercedes use. They seem to have a very high failure rate.

Thanks,

AC
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2005 ML 500
Black, 18" AMG Wheels, 285/60R18 Yokohama Geolander HTS + Bi-Xenons(+ Drew's e-code mod, though the reflectors rusted off and do not give out much light anymore), Yakima roof bars, Akebono pads all around. Former vehicle 2001 ML 320 with 108K miles, when traded, and a large repair/defect history. After all these years of owning my current 2005 ML 500, it is a major unreliable vehicle with a very large/expensive repair/defect history and has been like this since brand new.

Last edited by AC_ML; 05-25-2009 at 01:56 PM.
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Old 05-25-2009, 02:04 PM   #2 (permalink)
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Date registered: Aug 2006
Vehicle: 02 ML320
Location: Bronx, New York
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On the 8 cyl. it is very tight (much easier on the 6 cyl.). The work around is to remove the left front wheel and the fender liner and go at it from there. You will need an E8 torx socket to do the job. The sensor is located behind the left cylinder bank.
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File Type: pdf Crank Pos. Sensor.pdf (362.4 KB, 950 views)
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Old 05-25-2009, 02:24 PM   #3 (permalink)
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Quote:
Originally Posted by AC_ML View Post
Well finally the CPS cr@p happened to my 2005 ML 500, at 78,000 miles.

I was at a car dealer looking at cars for my wife. As we were leaving, I tried to turn on my ML(engine hot), it started but it immediately died with no error messages of any kind.

I thought this was very strange because once it starts, my ML always stays on. I had a similar problem fixed long time ago, where I will get a "start error" message displayed on my instrument cluster display, but the DAS module was replaced and this problem was fixed(below is the link to that problem).

http://www.benzworld.org/forums/w163...e-display.html

So I tried to start it again, and it started normally. While driving down the highway, I got an engine light. When I got home, I connected my OBDII scanner, and I got:

"P0335 Crankshaft Position Sensor A Circuit"

I guess I am going to have to search our forum for the instructions on how to change it, or if I don't have time, I will have to have the stealership perform this repair..

Any recommendations from anybody who have replaced their CPS's..? It's amazing to see the bad quality of these sensors that Mercedes use. They seem to have a very high failure rate.

Thanks,

AC
Yes, failure rate is high. But a least newer software (ME 2.8) recognizes the problem and stores code for it. Saves time and aggravation on multiple tows.
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Old 05-25-2009, 03:18 PM   #4 (permalink)
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43sqd, Witek,

Thanks for the information..!! It is great that the new ME 2.8 software recognizes the failure...

43sqd, your pdf image was from an ML 320. I guess the sensor is located in the same area on the ML 500 engines...?

Do you all know around how much will the dealer labor charge is for changing the crankshaft position sensor..? I may need to be at work earlier than I thought so I don't know if I have time to do it myself tomorrow..

Thanks,

AC
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Old 05-25-2009, 03:36 PM   #5 (permalink)
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It is in the same exact location. As for the cost of the repair, the sensor lists for $135, with .6 to 1 hr. labor. Then they will probably charge you for diagnosis and re-initialization. So figure around $275-300.
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Old 05-25-2009, 03:48 PM   #6 (permalink)
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43sqd, From all of your information and from the DIY's, I think around $300.00 will be reasonable for a stealership.. Anything more than that, and I may take a vacation day and work on my ML..

Thanks for all your help.. There is nothing more annoying/worrisome than having a sick ML with no health insurance...

Regards,

AC
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Old 05-26-2009, 01:35 AM   #7 (permalink)
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AC_ML, on the bright side, proper code is stored for your truck. Other members had to chase around the same problem not knowing exactly what is the root cause.

let us know how the replacement of CPS goes...
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Old 05-26-2009, 07:17 AM   #8 (permalink)
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I just replaced my last night, as 43sqd pointed out it is easy on the 6 cyl, the whole thing only took me about 20 min or so. I used my hand went around the back of the engine, unscrew(taking the old one out) and screw(installing the new one) the last/first a few threads of the E8 bolt by hand. This way save the time retrieving the bolt.
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Old 05-26-2009, 08:20 AM   #9 (permalink)
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Well as expected from a Mercedes Stealership, I got ripped off, but had to go to work so I payed the Mercedes dealer to fix it. It took them about an hour to do it.

For my Mercedes 2005 ML 500:

Part Number:

003-153-28-28 Position Sensor $178.00

Install Labor: $301.00

78718 INSP. Perform INSP TK1597 $45.16


TOTAL: 543.24


I wish this would have happened early last weekend so that I would have had time to do this myself..


AC

Last edited by AC_ML; 05-26-2009 at 08:23 AM.
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Old 05-26-2009, 10:34 AM   #10 (permalink)
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Angry

Quote:
Originally Posted by AC_ML View Post
Well as expected from a Mercedes Stealership, I got ripped off, but had to go to work so I payed the Mercedes dealer to fix it. It took them about an hour to do it.

For my Mercedes 2005 ML 500:

Part Number:

003-153-28-28 Position Sensor $178.00

Install Labor: $301.00

78718 INSP. Perform INSP TK1597 $45.16


TOTAL: 543.24


I wish this would have happened early last weekend so that I would have had time to do this myself..


AC

Ouch!!!
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