2008 Mercedes Benz ML350 Car wont' start - Fuel

Tiny
AVANC9
  • MEMBER
  • 2008 MERCEDES BENZ ML350
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 229,000 MILES
As I turn on the ignition, I hear a low faint buzzing sound. The engine won't turn over. So I suspect it has something to do with fuel. Kindly advise.

Thank you,
Regan


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Tuesday, December 23rd, 2014 AT 10:26 AM

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Tiny
CARADIODOC
  • EXPERT
How did you come up with a fuel problem causing an electrical problem? If the engine won't crank, you haven't even gotten to the point where fuel is needed. The first thing to suspect is the battery. How bright are the head lights? What happens to them when you try to crank the engine? If you have a digital voltmeter, measure the battery voltage. It must be 12.6 volts. If you find it's closer to 12.2 volts, it's okay but discharged. Charge it at a slow rate for an hour, then try cranking the engine. If it's around 11 volts, it has a shorted cell and must be replaced.
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Tuesday, December 23rd, 2014 AT 2:09 PM

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