In reference to [this post. ](https://www.theverge.com/2024/6/21/24183439/tesla-model-y-arizona-toddler-trapped-rescued)
In: Engineering
The high voltage battery and the 12V converter do not run all time when the car uses turned off. In most EVs those components only run when the car is on, when it is charging and for a short time once a day or whenever it senses the 12V battery is getting low to charge the 12V battery back up. Running them all the time would require running the high voltage battery heater/cooler all the time and would waste a lot of power.
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