Another one bites the dust..

[h71]

Cruise set at 55, going up a small incline, 39 miles on the gom, yellow "!" lit up, followed by reduced power, then complete loss of power. Gom freaked out, reverted to full battery status and miles went to 3.. It's not the 12v. Disconnected 12v and letting it sit overnight, I'll try again tomorrow to charge it, but I already know...

 

[Randy960]

Sounds like a couple weak cells. You can clear the stored codes with the VCX Nano or an OBD scan tool with bidirectional control. That sort of sustained load cruising uphill is when they show up. With a Bluetooth OBD tool and Torque you can watch the individual cell voltages and see which ones are sagging under acceleration and the highest voltage while charging. My cells 80 and 81 are the worst. 16 and 49 aren't great either. My issues started at the end of summer, and I'm still commuting 30 miles a day, even in winter. In warmer weather I was still driving it further away and fast charging it, I just treated 20% as 0.

 

[h71]

Thanks, I'll check it out tomorrow. I have the torque app and setup, hopefully it can be brought back to life.

 

[RebamontanBeth]

Cruise set at 55, going up a small incline, 39 miles on the gom, yellow "!" lit up, followed by reduced power, then complete loss of power. Gom freaked out, reverted to full battery status and miles went to 3.. It's not the 12v. Disconnected 12v and letting it sit overnight, I'll try again tomorrow to charge it, but I already know...

I am going through the same thing with my mom’s spark. Were you able to find a solution?

 

[h71]

I am going through the same thing with my mom’s spark. Were you able to find a solution?

I haven't had a chance, Sparky went down last night. When it warms up a bit more outside I'll head out and connect the 12v battery and see if that reset anything. From what I have read from both Randy and other member posts the car likely has a bad cell or two that have fallen out of voltage with the rest of the pack cells and the pack has shut itself down as a result.

 

[Randy960]

This thread is from when I first had this issue, and I optimistically thought the 12v was the root cause.

Thread 'Died while driving due to 12v battery' https://www.mychevysparkev.com/threads/died-while-driving-due-to-12v-battery.9544/

This is when I upgraded my scan tool.

Post in thread 'My 2016 mod thread' https://www.mychevysparkev.com/threads/my-2016-mod-thread.9545/post-29872

 

[h71]

This thread is from when I first had this issue, and I optimistically thought the 12v was the root cause.

Thread 'Died while driving due to 12v battery' https://www.mychevysparkev.com/threads/died-while-driving-due-to-12v-battery.9544/

This is when I upgraded my scan tool.

Post in thread 'My 2016 mod thread' https://www.mychevysparkev.com/threads/my-2016-mod-thread.9545/post-29872

Thanks! I had a dealer do the official battery pack test last year before the battery warranty expired, which was 10 months back, they came back with 23% capacity loss, after using it for driving this winter it looks to be the end. With the pack crapping out with 2 bars over half and 39 miles on the gom, even if it can be un-bricked, that means this car is only capable 20 miles of range, it's 17 miles to work, add in heat or ac and the fact that charging there is impossible and this is the end for Sparky, it's too expensive to maintain tags and insurance for it to only be able to go around the neighborhood.