"There is a problem with the transmission "P" lock mechanism Park your your car on a flat surface and fully apply the parking brake." with the red triangle I've done a ton of google searches on this issue with no luck finding a resolution. I was hoping you guys may of heard of a real solution to this issue. This message and red triangle is a constant on my 2007 Prius from the moment you turn the car on to the point of shutting it off. I'm able to override the message on the screen temporarily by pressing the INFO button on the steering wheel to be able to access other screen functions. It's not the 12v battery. I've replaced it twice. load tested both batteries. benched charged them before installing. cleaned the terminals, clean the negative cable and replaced the bolt for the negative cable that bolts to the body and cleaned the threads in the hole of the body. I've also tested both batteries using the "turn the headlights on and off three times" method with both new batteries passing. The car has only failed to start once for my wife and I'm not 100% convinced her incident was related. Any new news on this issue? As anyone with this issue that didn't have to do with the battery successfully resolve their issue? I've heard of the brake pedal switch fix and the three relay fix behind the HV battery but they never returned to the forum to say it definitely resolved their issue.