Question about 2003 Mercedes-Benz E-Class

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Hi, This is mike. Would like to ask about MERCEDES BENZ 211/E240(2003,V6) Here is the problem, -For the first time it start,there's only a second of granking sound then silent. -I thought it was the battery problem,so I changed it.However,it was not. -It happen a few times per day. My question.. -What's the exact problem with this vehicle? -Is there's any back up battery for this vehicle? -If Yes,where is the location for the back up battery of this vehicle? Hope for a reply.

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Hi Mike,
Several possibilities for the short crank time on initial start up. The battery was a good place to start. Yes there is a back up battery on this vehicle but its solely for the braking system. It will play no part in the starting characteristics of the vehicle. It's location is in the engine compartment underneath the a/c cabin filter by the right hood hinge (passenger side). The battery, remote key, tip start relay can all play a factor in this condition. If you have second key I would try that one for awhile and see what happens. It would be impossible to say exact problem with out looking at the car. Can only give most likely cause. Last time I ran into this problem replacing the battery did the trick. The main battery is located in the trunk under the carpet. Guessing that is the one you replaced.

Posted on Oct 10, 2010


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