When a Car Won't Jump Start?

If the car starts right away, your problem is most likely a dead battery. Charge the battery and clean the terminals and cable connectors to ensure good contact. If your car does not start by jump-starting, you may have a problem with your starter, alternator or another component of the electrical system.

Can a car battery be so dead it won't jump start?

YES, a car battery can get so dead it will not receive a jump start anymore. To cut to the chase, and just before we get to the meaty stuff, a “dead” car battery is an indicator of different factors—and almost always, these occur all at the same time.

Why won't my car start without a jump?

If you wonder why you have a new battery, but the car won't start without a jump, then the alternator could be the main source of the problem. If your battery is working well and functioning at a high level, the battery will lose its charge due to the alternator failing to keep the battery charged while functioning.