u/Fun_History7856

2017 Fiat 500E.

The car started warning me about battery health. I ordered a replacement and replaced it myself.

Now the car is showing an EV system warning icon (car icon with exclamation mark) on the instrument panel and refuses to start.

I don't have a code reader that supports the 500E, so I don't know what exactly the car is unhappy about, but it seems rather likely that it doesn't like the new battery. And the car owner's manual doesn't have a section on how to replace the service battery.

Can I reset whatever is making the car unhappy with the right code reader? Reading the Internet and this forum indicates it may be something called IBS, Intelligent Battery Sensor.

Thanks!