Mechanics

MERCEDES BENZ C240 SENSOR PROBLEM

2003 Mercedes Benz C240 • 83,000 miles

Our Merc C240 will not crank over at all. Battery is fine as everything else works, voltage tests fine and will not start with a jumper battery either.
It was running rough earlier so I put a scanner on it. It showed a Crank sensor code. I have a new sensor and I'll be installing it hopefully tonight, if I can get to it.
Question is, wouldn't the engine crank over at least, if it is just a crank position sensor problem?
If the sensor has failed completely, can that prevent the car from even turning over?
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Guest
April 10, 2013.



Trouble codes does not necessarily mean the component is faulty. It is an indication of a fault in the circuit and can be due to wiring etc.

Generally cranking are not affected by faulty sensors but for your vehicle, starting signal is sent by the ME-SFI control unit and trouble codes might affect the cranking circuit.

KHLow2008
Apr 10, 2013.