accidentally connected my jumper cables to my battery the wrong way

2005 SUBARU WRX
87,000 MILES
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LANCE RITCHIE
  • MEMBER
  • 1 POST
I accidentally connected my jumper cables to my battery the wrong way and now it has no power whatsoever. The alarm is sounding and I had to disconnect the battery to stop the alarm.
Jan 11, 2017 at 4:04 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,295 POSTS
Well if you are very lucky it is just a bunch of blown fuses and maybe the alternator. But in many cases this ruins the engine computer as well as the fuses and other electronics.

Start by checking every fuse in the under hood fuse box and the interior one as well. Expect to find a bunch blown. Pray that those are the only problem. Once you get the fuses checked and replaced, reconnect the battery and see what happens.
Good luck.
Jan 11, 2017 at 8:06 PM
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