2009 Toyota Sienna Owners Manual - Page 240

2-4. Using other driving systems Detection range of the sensors Approximately 2.0 ft. (60 cm) Approximately 2.8 ft. (85 cm) Approximately 5.9 ft. (180 cm) The diagram shows the detection range of the sensors. Note that the sensors cannot detect obstacles that are extremely close to the vehicle. The range of the sensors may change depending on the shape of the object etc. *: if equipped * n Intuitive parking assist can be operated when The engine switch is in the "ON" position and the shift lever is not in P. n Rear corner and back sensors can be operated only when The shift lever is in R. n Front corner sensors can be operated when l The shift lever is in R. l The shift lever is not in P or R and vehicle speed is approximately 6 mph (10 km/h) or less. 212