Jump starting cars today can cause more problems then they fix. Today’s cars have many control modules that operate the different systems in your car including the cranking system. Many times a very low voltage condition can damage one of the control modules as well as a voltage spike when you are jumping the car. Great care must be taken to be sure you have good connections, positive to positive and negative to the engine block is the best way. And doing this is no guarantee you won’t damage a control module.
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