I have a new 2018 Pacifica Hybrid Touring version, purchased March 31. It has a similar problem with the backup camera function and radio (computer) power on-off button. This car does not have the fancy entertainment system or surround camera, just the backup camera and a basic entertainment system. Three times now the backup camera function did not turn on when backing up. The third time I also noticed that the power button to the radio (computer) would not turn the radio off while in drive. The button did work when the car was parked and the ignition turned off. Letting the car sit overnight brings the functions back. The dealer says he can't help unless he can see the malfunction for himself. So far I can't seem to find a pattern to it. Hopefully the June S/W update mentioned previously will fix the problem.