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Crankshaft Position Sensor

Model: Mercedes Classe M W163 - Years 1997-2005
Part: Engine

If you experience starting issues, especially when the engine is hot, a possible cause could be the crankshaft position sensor: if it does not read the position correctly, it causes a misalignment in the injection sequence, preventing starting. This sensor is located at the rear of the engine, roughly under the brake fluid reservoir; disconnect the connector, unscrew the fixing Torx screw, remove it from its housing, and replace it with the new one, ensuring it is seated correctly and tightening the fixing screw; reconnect the connector and check the starting.

Updated on 10 February 2026 by ScegliAuto

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