Tank Assembly problems of the 2004 Toyota Prius

The consumer owns a 2004 Toyota Prius. He says that he is having problems with the vehicle because it will shut off while in traffic. Also the park mechanism will disengaged and the lock button does not unlock the doors as specified in the owners manual. Also the start button does not consistently start the vehicle properly. The vehicle experienced: inoperative brake light, the fuel door spring was replaced, dome light remained on, engine would disengage, lights would remain lit after the vehicle was started, vehicle would not move until the vehicle was shut off and restarted to get the brake light to go out, rattling as if it were going to stall, the alarm sounded on one occasion when the door was opened, fuel door spring malfunctioned and fuel door would not open. The technicians were unable to verify the door lock malfunction. The consumer would like the vehicle replaced with a 2005 model equipped as detailed on the original invoice including aftermarket items paid for.