I haven't taken the doors off yet. I guess the computer can tell. We had a 07 Rubicon. Loved it. But this 392 is soooooo much more. Just all around a better jeep.Then how do you drive with doors off? If this is true I guess the computer cancels that feature once the wiring harness has been disconnected from the door. I am going to love the power of this Jeep but I also love my 06 that has zero wiring to the doors, no traction control, no ABS, no seat belt warning (it was very easily disabled).