On occasion I have to haul something (bicycle) that wont let me close hatch. Can I turn off buzzer. I have an hour transport coming up.
I don't know, but it isn't too safe because carbon monoxide can enter the cabin if the hatch is open while driving.
That used to be a concern before emissions standards reduced the CO level so much in modern conventional ICE cars, let alone hybrids. I don't know if it is true, but "I have heard" that the old standard suicide method of running the car in a closed garage probably would not work any more with a modern car. I do not plan to test that conjecture.