Horn and door locks intermittently activating on there own

Rear camera no longer works. When vehicle is put in reverse, the display that is located in the rear view mirror will sometimes turn completely blue and then disappear. Other times it won't show anything at all. Wondering if anyone had come across this problem. And if so, what was the issue?

Unlocking of doors from drivers side ,there is a delay of time and sometimes will no unlock the doors by key