"Crank no Start" Due to Failed Crankshaft Position Sensor on Mercedes-Benz R350

Problem Description and Possible Solution

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance. Communicating these specific symptoms to your technician can save diagnostic time.

Problem Data
RepairPal Verified
Average mileage: 77,623 (26,000–130,000)
5 model years affected: 2006, 2007, 2008, 2009, more2011
20 people reported this problem
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Intermittent problems of starting of BlueTec R350. When turning key to start it will sometimes work and sometimes not. Change battery; no help in solving problem.