car wont start--- c200 auto

Tonight my c class simply would not start when turning the key starter motor would not turn over. 1st hunch is that the battery is dead but the lights horns and everything else seems tobe getting full power.I have managed to start it with jump leads,and have driven it afew miles but after letting it sit outside a hospital for forty minutes it refused to start again, so back to the jump leads and a very helpful smiling gentleman in a new Volvo got me on my way again .At home now after some further driving it has failed to start again. Do you think it is only the battery or could it be anything else - alternator -starter etc. I would really appreciate your advice service is hard to get here on a sunday.

[Benzmac]

Hmmmm. The battery is first to come to mind because you drove it after the jump start. Turn on the dome lamp and start the car. After you disconnect the jump cables the light should be a little dimmer but not too dim, If it is really dim you might have a faulty alt. Or you can check at the battery with a multimeter and see if the voltage when the engine is running is 13 or higher.

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Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM