After replacing the battery, the vehicle runs rough then shuts off?

Tiny
MEH7777
  • MEMBER
  • 2010 FORD FUSION HYBRID
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 86,000 MILES
After installing the new battery in my vehicle listed above it starts but runs rough then shuts off with the Triangle display and message "Pull Over for Safety" and then shuts off. It has to be something simple since it ran just fine before replacing the battery. I also had Ford check the Hybrid battery's not too long ago and they said they were strong. I've already tried disconnecting the negative cable and letting it set then reconnecting and restarting but it does the same thing. Attaching a video.

Thoughts? Things to try?

Thank you,
Mike
Sunday, March 16th, 2025 AT 8:44 AM

4 Replies

Tiny
MEH7777
  • MEMBER
  • 3 POSTS
Attached video.
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Sunday, March 16th, 2025 AT 8:46 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,138 POSTS
Hey Mike,

This is strange, it seems like you have had a voltage spike that has taking out a sensor or module, I would run a CAN scan on the car to see what codes are stored.

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

Here is a note from Ford on changing the battery:.

When the battery (or PCM) is disconnected and connected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The charging system set point may also vary. The vehicle may need to be driven to relearn its strategy.

You might want to try a hard system reboot which can't hurt.

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

Please go over these guides and get back to us.
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Monday, March 17th, 2025 AT 10:53 AM
Tiny
MEH7777
  • MEMBER
  • 3 POSTS
Thank you! The second option actually worked. Thank you again for the advice. I appreciate it!
Mike
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Monday, March 17th, 2025 AT 3:12 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,138 POSTS
You are very welcome, can you please leave us a rating?

https://g.page/r/CZdEnyCkGgm6EB0/review

and

https://www.sitejabber.com/reviews/2carpros.com

Thank you! :)
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Tuesday, March 18th, 2025 AT 9:29 AM

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