One problem related to transmission slip out of gear has been reported for the 2010 Toyota Prius. The most recently reported issues are listed below.
My 2010 Toyota Prius does not always recognize the key and will not open doors and not start the vehicle. The gear shift jumps out of gear going from reverse to drive and vice versa. The heater does not work properly. I am afraid to drive my newly purchased vehicle. Please advise.