2012 Toyota Prius Owners Manual - Page 757

5-2. Steps to take in an emergency Warning message Details Indicates that the EV drive mode is not available*2 A buzzer also sounds. The reason the EV drive mode is not available (the vehicle is idling, battery charge is low, speed is higher than the EV drive mode operating speed range, accelerator pedal is depressed too much) may be displayed. Indicates that the EV drive mode has been automatically cancelled*2 A buzzer also sounds. The reason the EV drive mode is not available (the battery charge is low, speed is higher than the EV drive mode speed range, accelerator pedal is depressed too much) may be displayed. Correction procedure Use the EV drive mode when it becomes available. Drive the vehicle for a while. (Flashes 3 times) *1: Refer to the separate "Scheduled Maintenance Guide" or "Owner's Manual Supplement" for the maintenance interval applicable to your vehicle. *2: For the EV drive mode operating conditions: →P. 170 448