- First Name
- Mar 23, 2021
- Reaction score
- Bay Area, CA
- 2021 MME GT-PE, 1979 Fire-Am, 1972 K/5 Blazer
It’s kind of like when you “shut down” a PC. It still has stuff going on. It monitors for wake on network signals and other stuff. There are a ton of things that are on the Battery (always on) circuit, even more that are on the Accessory (on, but car can’t drive) circuit, and the driveline stuff that is on the Run (car can drive) circuit (just like an ICE vehicle).So, that brings up ANOTHER interesting question: just how “shut down” are our cars when they’re “shut down”? Clearly, they’re not REALLY shut down because they have to receive updates (including the all important remote frunk release update ). Also, they have to keep the alarms, occupancy/motion sensors, and so on going. So I’m not convinced they’re ever really “shut down” until the 12V system dies. I’ve always wondered what it means when you get into the car and the Sync screen is displaying “system powered off to save battery” (or something to that effect) with a progress bar?