accidentally

I recently bought a 2015 CT 200h and somehow managed to disable the rearview mirror backup camera. I have a non-navigation model. Can't find any documentation to re-enable. Can someone walk me through how to re-enable please!

I accidentally left my car running all day yesterday. It was o.k. in that the thing had only used 1/8 of a tank of a gas for 8 hours of being on, but I am really disturbed that it kept on running after the key was with me the whole day. Is there any way of 'oops I forgot to turn off the car...

What happens when you accidentally press PARK while car is on motion D(drive)? It is so easy to press P unintentionally.