Crankshaft Position Sensor Problems of Mercedes Benz E500

Mercedes Benz E500 owners have reported 3 problems related to crankshaft position sensor (under the electrical system category). The most recently reported issues are listed below.

1 Crankshaft Position Sensor problem of the 2005 Mercedes Benz E500

Failure Date: 06/25/2015

On three separate occasions, the engine suddenly shut off as the vehicle was decelerating to a stop. Twice it occurred as the vehicle was coming to a stop at a stoplight and once it happened as the vehicle was on an off-ramp, exiting I-95. On the first two occasions, at the stoplights, the vehicle restarted immediately. On the third occasion, on the off-ramp, the vehicle would not restart until it was allowed to cool for at least five minutes. This was particularly dangerous on the off-ramp. After the third occasion, I had the vehicle towed to a repair shop where it was determined that the "crank position sensor" was failing and needed to be replaced. The engine shutting down at any time while the car is in motion is a safety hazard. Owners should be notified that it can happen and should be urged to get it checked.

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2 Crankshaft Position Sensor problem of the 2004 Mercedes Benz E500

Failure Date: 10/26/2009

Benz E500 2004 (54k miles) safety issue1: Nov 2008(36k miles), the car used to lose power and shut down while driving with all the lights blinking on the dash board. But I was able to break ansdstop . Sometimes it started back on and sometimes it did not. Dealer replaced the crankshaft sensor and the sender unit. Had to pay the bill of $600 plus towing. They did not inspect other safety issues like the sbc pump or let me know about the 10 year warranty. Neither did they tell me if sbc pump failure or its malfunction has any impact on other parts of the car. Safety issue 2: Jan 6th 2015. (refer to complaint #10676289)sbc pump failed during a long road trip and thinking it was just brake pads, could have been fatal. Dealer/mb refused any assistance in repairs. Cost us $2200. When the dealer refused to look at the sbc pump before the warranty expired and they know it is going to fail, customer is in a very uncomfortable position with safety aspect, huge repair costs involved and possible impact on other parts and situations. They designed a warranty on this programmable unit that is programmed to lend certain cycles or service. Mercedes benz has turned this major defect into a money making opportunity lately. They are installing reman units with a high repair cost of $2000-3000. Sometimes, more than the worth of the car. Regulators should revisit the case and have them provide life time warranty on this major flaw and maybe more. When there were two recalls just a year after it was bought, how can they get away with a 10 year warranty and a huge repair cost. Since they have more lawyers than any common man, only regulators can help the citizens and protect their interests and safety.

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3 Crankshaft Position Sensor problem of the 2004 Mercedes Benz E500

Failure Date: 06/25/2008

I own a mercedes-benz E500 bought new in 2004. 3 days ago I was driving the vehicle at about 35 miles an hour and car stalled and came to an abrupt stop in the middle of the road with no warning. I could not start the engine back for about 5 minutes. Luckily there were no other vehicles behind me, which would have hit me from behind. I later towed the car to the mercedes service station. They reported it as an electircal failure due to failing of the crankshaft position sensor. They have replaced the faulty sensor and the car is running ok now. I am still wondering why did the car come to an abrupt stop and did not allow me to coast the car to the side of the road, which should have been the backup safety mechanism in a failure like this to avoid a major accident. I am worried whether there is a design fault in this vehicle that did not allow that back up mechanism to kick-in. My service advisor says this fault is unlikely to recur. I feel that the sensors can fail at any time and the vehicle should have a safety mechanism to avoid abrrupt stops like this. If I was on a free way this would have created a major accident with so many vehicles piled up on top of me! my car has done only 40,000 miles within the last 4 years. It has new tires, a new battery and new brakes -all taken care of by the mercedes dealer at my last service about 2 weeks ago.


Other Common Electrical System related problems of Mercedes Benz E500



E500 Service Bulletins
E500 Defect Investigations