2024 User manual, page 553 - it can be manual turned off in settings.

In the event of a collision they will automatically turn on.

No you cant turn it off but you can drive in a way to prevent it from coming on. I try to run the just batteries in the scenario you described with it 2 bars from full in stop and go traffic. The engine is coming on because of something you are doing to trigger the engine to start.

Nice, I like the color. I’ve been wanting one since they announced it.