2008 Toyota Sienna Owners Manual - Page 426

08 SIENNA_U (L/O 0801) The Toyota park assist system is designed to inform you of the approximate distance between your vehicle and an obstruction by indicator and buzzer when parking the vehicle. This system uses sensors to detect obstructions. This system works when the engine switch is in the "ON" position and the transmission is not in the "P" position. In the following cases, the buzzer will sound several times and the indicator will stay on to indicate that the system is not working properly. D When the temperature is extremely low. D When any of the sensors are malfunction. If the indicator is continuously on, have your Toyota dealer check the system. If the indicator remains blinking but you do not hear the buzzer sound, clean the sensors with soft cloth. To turn on: Push the switch. The indicator comes on and the buzzer will sound. To turn off: Push the switch again. D Rear and rear corner sensors work only when the transmission is in the "R" position. D Front corner sensors works when the transmission is in the "R" position. D Front corner sensors works when the transmission is not in the "P" or "R" position and vehicle speed is approximate 10 km/h (6 mph) or less. 385 2008 SIENNA from Aug. '08 Prod. (OM45455U)