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1997 Mercedes-Benz S420

Question: Jump start

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jayrosh, Kissimmee, FL, April 30, 2009, 20:09

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I made a terrible mistake, I have Mercedes S420 97, it was in storage for few months and battery was dead so I tried to jump start with my other car which was running. I put the key in MB and all the lights were on in the dashboard than I try to start it made only one turn and went dead completely
all the lights gone and nothing is happening, where did I go wrong? what could be damage? and how much will it cost.
Please help me, I do not want to sent this car to the garage until I know what it wrong otherwise I can be ripped off....
Please Help!!!!!

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• Best Answer
  patrick mannion from Greg Solow's Engine Room, April 30, 2009, 20:51
  

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  There is a possibility that your jumper cables just had poor connections. I dislike jump starting higher end cars, too many computers (risk of voltage spikes ect...). See if you can borrow a battery charger from a friend and let the battery charge fully before trying to start the car.
  Most cars have a main fuse or fuse links near the battery or in a fuse/relay box near the battery with heavy duty 200 Amp, 100 Amp, 80 Amp fuses that should blow before damaging the more sensitive electronics found on our cars.
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• Answer #2

  Visitor, August 24, 2010, 21:00

  DISCONNECT THE BATTERY FIRST!!! then charge the disconnected battery. after a full charge, reconnect the battery and start the car. too much risk of creating a power surge and damaging sensitive modules
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