hooked the battery terminals up the wrong way, now it will not start?

2010 TOYOTA COROLLA
280,000 MILES
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DAMO84
Hello, my partner got a jumpstart off a friend and hooked the terminals up the wrong way and now the car won’t start. What could be the problem?
Jan 29, 2025 at 3:13 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,503 POSTS
  • ASE Certified Mechanic
Most of the time when this happens it will blow the main maxi fuse in the fuse panel under the hood. Here is the location of the fuse so you can check it out. Also, this guide can help:

https://www.2carpros.com/articles/resolving-reverse-battery-connection-in-cars-a-step-by-step-repair-guide

Please go over this guide as well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

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Jan 29, 2025 at 10:32 AM
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