Hi throne7,

as far as I know, MB owners enjoy life-time, free of charge road side assitance. I'd push the car onto the road and call them (Being in the garage would represent no road hazard). Even if they cannot help you to jump start the car, they would be able to narrow down the problem area.

1-800-FORMERC

Good luck

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE