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

Tiny
DAMO84
  • MEMBER
  • 2010 TOYOTA COROLLA
  • 280,000 MILES
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?
Wednesday, January 29th, 2025 AT 3:13 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,431 POSTS
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

Check out the images (below). Please let us know what happens.

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Wednesday, January 29th, 2025 AT 10:32 AM

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