M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

CEL: Possible CPS Failure?

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Old Feb 24, 2012 | 11:07 PM
  #1  
bbearden's Avatar
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From: Los Angeles, CA
'03 E55 (My Daily), '01 ML 320 (Wifey), Twin Turbo '69 Camaro (In Progess)
CEL: Possible CPS Failure?

Gents, the ML acted up tonight and my wife mentioned that it took a while to get it started when she was leaving a store earlier today. On our way out to dinner and made a quick stop and the car didn't immediately start. Had to wait 5 minutes before it would finally start. Sounds like the classic case of a CEL on it's way out to me. I don't have a code reader though I am assuming it is the CPS. If I replace the CPS, will the CEL go away? Appreciate the advice in advance!
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Old Feb 25, 2012 | 11:50 AM
  #2  
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From: Los Angeles, CA
'03 E55 (My Daily), '01 ML 320 (Wifey), Twin Turbo '69 Camaro (In Progess)
Replaced the CPS and reset the CEL and all is good again!
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Old Mar 21, 2012 | 08:01 AM
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ML430
ML430 Wont Start (sometimes)

I m having an intermittent issue where the truck wont start. This is the second time. The first time I thought I left the lights on because i let it sit for an hour or two and it started back up and drove fine. This is the second time and now I am leaning toward the cps (crank position sensor). It also cut off during driving one day on the highway (but started back up at 40+ while driving). I told my dealer friend and he signaled the cps as well. I also have the mystery lights ets/bas/abs don't know if its related.
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Old May 25, 2012 | 03:50 PM
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ML430
Bad Battery Terminals

Seems like it didnt start becuase of bad battery terminals .
I was going to swap the battery, but before i started i said to myself let me try this one more time. hooked the battery in and its started. battery terminals were out of place. dealer priced both at $150. uugnh!
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Old Jun 18, 2012 | 02:22 PM
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From: NYC
ML430
ML430 cuts off while driving

Truck is back at the repair shop.
Will cut off during driving, sometimes doesn't start immediately.
I'm thinking Bad CPS (Crank Position Sensor)
any ideas?
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Old Jun 18, 2012 | 06:53 PM
  #6  
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2002 ML 320 & 2006 ML500
Originally Posted by NYCFIXMYPC.COM
Truck is back at the repair shop.
Will cut off during driving, sometimes doesn't start immediately.
I'm thinking Bad CPS (Crank Position Sensor)
any ideas?
Yes that's probably the problem, but why didn't you replace it yourself?
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