Tow truck coming in the morning

A stretched chain makes a rattle noise. I uploaded a video of what a Prius engine sounds like with a chain stretched.

I had this problem on a Prius a few years ago, but I don’t remember what the codes were.
I can't say for sure what the engine sounded like in the Prius I replaced the battery in because I was focused on the engine misfire and replacing the hybrid battery. I started it 2 or 3 times with the hood closed while sitting in the car as far as I remember.
The owner can tell how the engine sounds in her Prius.

 

I cycled the battery once and this is the capacity of four modules.
I wanted to check the capacity with the 4-channel charger again, but when I was trying to connect the 3rd channel, the battery shorted through the charger and now it is dead. Next time I will remove the bus bars from at least one side.
I'll test the battery with a Dr. Prius app when I get a chance.

Module voltages before discharge-charge cycle:
Module 2: 8:40 (1st test 8.42v)
Module 3: 8:32 (1st test 8.39v)
Module 15: 8:41 (1st test 8.39v)
Module 22: 8: 40 (1st test 8.35v)

The capacity of these 4 modules
Module 2: 7100mAh (prior 637 mAh)
Module 3: 7116mAh (prior 490 mAh)
Module 15: 7370mAh (prior 508 mAh)
Module 22: 6837mAh (prior 527 mAh)