I've been having a look for how to get into the Diagnostics Menu on my Prius+ (UK Spec version of the V), and got the Diagnosis Check screen (as per the picture) up. Compared to what appears to be older Prius's, there's not a lot I can do. The "Next Page" button comes up with speed, parking brake and reversing status, and I can do the speaker check, but nothing like as many options on the older cars (the Camera button doesn't do anything, but I do have a functioning reversing camera fitted) Did Toyota spoil our fun and lock it down for the newer versions of the software, or is there another way in to more options that I'm not doing?
Prius v 5 w/ ATP Hidden menu (can turn on backup camera in D) | PriusChat From the old discussion, there might be country specific or Adv. Tech. Pkg. hidden menus involved. Have fun.