Rattles, then shuts off on its own?

2015 CHEVROLET MALIBU HYBRID
908,000 MILES • 4 CYL • 2WD • AUTOMATIC
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IZZY W
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(I meant to write 90,800) Hi! So, I just recently bought the car listed above LT Hybrid and drove it home today, everything was fine. However, when I got home, I was adjusting some things (Bluetooth, audio settings, etc.,) and the car rattled very aggressively and shut off. For a brief moment a “service battery charger” appeared but went away. I looked at the touch screen and the battery is completely drained, and the check engine light is on. So essentially, I turn it on, it rattles aggressively, the engine shows a light moving to the empty battery on the touch screen, and then the car shuts off on its own, doesn’t matter whether I'm in drive or reverse, it shuts down completely. Luckily, I have a warranty and plan to fix it, just curious as to what’s wrong with it.
Dec 30, 2023 at 4:27 PM
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STRAILER
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To me it sounds like the 12-volt battery is bad, but we should run the codes as well. If the engine doesn't have 12 volts the PCM will shut off and stall the engine.

This guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

I would remove the battery and take it to an auto parts store to have them load test it. Here is how. Check out the images (below). Please upload pictures or videos of the problem so we can see what's going on.

Dec 31, 2023 at 2:26 PM