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Stan, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3526
Experience:  Technical support engineer
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I have a vito(###) ###-####which will only start with easy start

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I have a vito(###) ###-####which will only start with easy start on damp mornings. Once going no problems, but another damp morning and it wont start again. Could I have problem with the MAP or MAF sensor, and if so will a sensor cleaner help?
Stan :

The engine will not start if the camshaft position sensor is faulty. Other possible causes are insufficient rail pressure due to faulty pressure regulator, quantity control valve or injectors I suggest to have them checked with Star Diagnosis to localize the cause. Some independent MB workshops have this tool besides the dealers

Stan :

Your van has an electric pre-delivery fuel pump, so the low-pressure supply is not likely to cause such problems.

Stan :

best regards,


Thank you Stan,


All these checks have already been done. As I pointed out earlier, it only seems to happen when there is a heavy mist overnight, and once we finally get it going, it will run all day, stopping and starting. So my question again is (CAN DAMP IN ONE OF THE SENSORS BE THE CAUSE?)

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