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Your car could have a dead battery. Your key opens your electical system only while a jump allows you use the other car's electical system (good battery and all). It could also be a bad starter. Autozone can check your starter, battery, and alternator for free. that happend on our 94 Ford Explorer and it turned out to be a bad wire connecting to the starter!

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โˆ™ 2005-11-18 17:29:11
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Q: Why would a car not start with your key but start easily with a jump start?
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No, a defibrillator will not jump start a car battery.

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The same way you jump start a car with a manual transmission.

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Just make sure the gear stick is in neutral and the hand brake (parking brake) is on. Then try to jump start it as you would do with an automatic car.

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Jump starters are used to jump start a car when the engine will not start by itself. It is a common reason for car breakdowns and all breakdown companies have jump starter tools.

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Why would a car make a clicking noise when you try to start it but will start with a jump?

You have a dead cell. You need a new battery

Will it damage a car to jump start a car with a bad alternator?

No It will not hurt a car to jump start with a bad Alternator. Only if you put the cables on backwards. Jeff 25 years Automotive Tech It has been my experience that although you can jump-start a car with a bad alternator and drive it, the car will eventually die while you are driving (usually in a spot where there is no one around to help you jump start it again). I recommend a jump start and then go to an auto parts store to buy another alternator.

Can you jump start your riding mower using a trickle charger connected to the battery?

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Can you jump start a car if it is all wet?