2000 Mercedes Benz S500 my car wont start

2000 MERCEDES BENZ S500
15,400 MILES • V8 • 2WD • AUTOMATIC
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THERDY64
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I did not use my car for 3 weeks.and tried to start yesterday but it wont start.Theres no sign of light,wipers,radio and other.When i put the key in ignition key it wont turn.So i decided to use the the jumper with another car.The light went on,rado but it wont start.

Is the battery dead? but how come it wont start even i use jumper with another car? or any electrical problem?

somebody can give me advice,thanks in advance.

therdy64,
May 22, 2010 at 9:17 AM
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RASMATAZ
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  • 75,992 POSTS
Cranks but no start condition:

Fuel and Spark:
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

No crank at all/nothing/nada:

Could be a blown fusible link,the starter, starter relay, clutch switch/park and neutral switch and ignition switch assuming the battery and connections are good
May 22, 2010 at 12:11 PM