Question about 2007 Mercedes-Benz C-Class

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I have a C Class 230, 2007 with 27K miles. Owned

I have a C Class 230, 2007 with 27K miles. Owned about 3 months. Car does not start time to time, and when is towed to dealer, it starts. Dealer can't find any problems and they can not do any repairs. I feel like i can not travel long distance in case it happens again. Any suggestions ? Thanks.

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Let me understand that the problem is intermittent and engine is cranking but not started. For that being said, there are 2 main things to check.
1-The start is not on since there is not fuel delivered to the Fuel distribution. Fuel pump is controlled by the pump relay. But the pump relay is activated by the a fuel pump control module which is an electronics integrated module. This is the one gives unstable condition.
2- The start is not on since there is no electric signal to deliver to the primary coil. And this one is controlled by the ignition module. This is an integrated electronic module can give unstable condition.
The last thing to check is the Crank shaft sensor condition since it has to give the signal for the above 2 things to work. Good luck

Posted on Sep 04, 2009

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Ignition batary need to charge.

Posted on Sep 04, 2009

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