Service Electric Vehicle System message on the dashboard

[visionOn00]

I need experts, please!
I had to replace my 12V battery because it was reading 10V. I think it happened because I haven't been using the car for like 2 months. The problem is the car's battery pack still doesn't charge.
So I went to the dealership and he suggested a new battery pack or selling the car for parts, but he wanted almost $500 for a diagnosis. I also had to spend money to bring the car to the dealership. It is already frustrating.
Anyway, the car's dashboard shows left and right charging lights flashing and displays a message: Service Electric Vehicle System.

I used the OBD2 and got some errors related to battery packs and EV control. Three battery packs show no charge.
What should I do next? Thanks in advance.

 

[mistah187]

Whoa, that’s a crazy price just for a diagnosis! What kinda errors did you find on the OBD2?

 

[Eric Smith]

I need experts, please!
I had to replace my 12V battery because it was reading 10V. I think it happened because I haven't been using the car for like 2 months. The problem is the car's battery pack still doesn't charge.
So I went to the dealership and he suggested a new battery pack or selling the car for parts, but he wanted almost $500 for a diagnosis. I also had to spend money to bring the car to the dealership. It is already frustrating.
Anyway, the car's dashboard shows left and right charging lights flashing and displays a message: Service Electric Vehicle System.

I used the OBD2 and got some errors related to battery packs and EV control. Three battery packs show no charge.
What should I do next? Thanks in advance.

If you can swing it, get a pro to check out the health of each battery cell in the pack. You’d be surprised, sometimes just one bad cell can throw a wrench in the whole setup!

 

[visionOn00]

I finally got it sorted! It was a single faulty cell in the battery pack causing all the issues. I had a technician test each cell individually, and we replaced just the one that was dead. Now the car is charging up fine, and I am back on the road without the need for a full battery pack replacement.

Huge relief, and way cheaper than what the dealership suggested. Thanks for all the insights!