Mercedes-Benz SL500 Problem Report
Mercedes-Benz SL500 Stalling and/or "Crank no Start" Due to Failed Crankshaft Position Sensor
The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
Problem began by exhibiting the "crank but no start" behavior. Was told that perhaps the computer chip in the key was not transmitting correct data and to get a new key. Next it stalled at low speed (approaching a stop sign), and would not restart until approximately and hour had passed. Then stalled again at low speed in a parking lot, re-started 15 minutes later, and then stalled for the last time in the same parking lot. Called for a tow and left it. The car started fine the following morning so was able to get it onto the tow truck and get it to the shop. The crank shaft position sensor was replaced, and so far no more problems. - Visitor
Starts and runs fine for about 10 mins. Afterward - begins to hesitate and idles roughly. After cutoff - restarting results in choking, coughing, sputtering engine. Sometimes doesn't restart. And stalls at idle when this condition occurs. - Visitor
after parking and turning off engine, I could not turn the car back on. The car started after cooking off. During drive to mechanic, the car stalled on the road. Diagnosis of crankshaft sensor. $600 repair. Saw a fix on youtube that takes a total of 20 minutes with one tool. - jgibbs58
I had it replaced. - JonathanB1
Car starts up every morning however when I shut it down to go into store, gym, restaurants etc. many times (but not every) it won't start again unless I wait 20 min. or more (sometimes an hour). Any ideas why? Takes alot of fun out of driving the vehicle not sure if I go out to dinner if it will be a hassle to get it going again. - Visitor
same - cranks - diesels - wont start - thomshank
Engine would die, then restart after cooling for 15 minutes. Sensor was replaced for $285 and all is well. - Visitor
Crankshaft position sensor failed resulting in no engine ignition and a flatbed tow to the dealer. evidently this is a fairly common occurence due to age of vehicle. - Visitor
Replaced under warranty - Visitor
The car stalled and check engine light came on. Had towed to mechanic and he replaced crankshaft position sensor, no problems since. - Visitor
Starts cold and runs fine. After shutting down after a drive, car cranks and won't start. - Visitor
literally drove the car and parked in municipal parking garage. when I went to get the car out (2 hours later), car wouldn't start and had to have it towed to dealer for repair. luckily I had an extended warranty. - Visitor
Engine not starting when hot. When engine cooled it started fine.. - Visitor
Recently my car wouldn't start when we were leaving a friends place. 10 min later it started. Yesterday it stalled at a light. Didn't start for 1 hr. Took it to a dealer: Close to $600 to fix. (200 part and rest for labor and 40 tax).. I will never buy Mercedes again. For the price it is poor value. Car seems to be made to purposely have certain problems and they tend to force you to go to the dealer for fixing. My private mechanic said parts and labor should have been $300. (unfortunately he couldn't fix it yesterday for me) - Visitor
Car driving "rough"....almost like coughing at speeds of 40, engine light on, took to dealer...$600 to fix the crankshaft sensor. :( - Visitor
The engine turns over once or twice but will not start, repete the process a couple of times and the engine starts. - Visitor
Car would not start, ignition turned over but would not start. Started occurring occasionally with increased frequency until finally would not start at all. Mechanic shop replaced crankshaft sensor and all is fine now. - Visitor
Engine wouldn't start. Dealer replaced sensor under extended warranty. Works fine now. - Visitor
ENGINE WILL STALL AT A RED LIGHT AND NOT RESTART FOR 5-15MINUTES - Visitor
car runs great and when I drive it a few miles it will not start again, I can not figure out what is wrong for sure - mcgypsea
I have changed the flywheel sensor 3 times and the car still kills when I come to a stop sign....
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The engine turns over fine but does not start. It has spark, but does not get fuel.
after replacing the sensor now the car wont start at all
after installing sensor car would not start anymore.