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Hooked the battery back up after three days of being unhooked and tried to start it and nothing happens?

Tiny
RHOADESD91
  • MEMBER
  • 2008 JEEP GRAND CHEROKEE
  • 3.7L
  • V6
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
So, I hit a deer on the way home the other evening and broke the bumper grille and headlight and the plastic on the radiator. So, I replaced all that and got it all squared away and found a plug that goes to an impact sensor. When I hooked the battery back up after three days of being unhooked and tried to start it nothing happened other than the dome light coming on. Nothing else comes on; no horn, headlight, or anything. I have checked the fuses and they all seem to be good. Please help.
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Monday, August 8th, 2022 AT 6:51 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Is the battery in good shape? If so, it sounds like the IPM is bad which is common. To be sure you can get a CAN scanner from Amazon for about $30.00.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here are the instructions on how to change the IPM out which is easy it-self learns there is no programming involved. Check out the diagrams (below). Please let us know what happens.

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Monday, August 8th, 2022 AT 5:21 PM
Tiny
RHOADESD91
  • MEMBER
  • 2 POSTS
So, I got it going there was a wire that came loose under the fuse box and while checking for broken grounds came across it. I hooked it and bam started right up. Thank you so much.
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Monday, August 8th, 2022 AT 8:55 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Nice work, we are here to help, please use 2CarPros anytime.
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Tuesday, August 9th, 2022 AT 12:40 PM

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