2013 Toyota Sienna Owners Manual - Page 649

2-4. Using other driving systems The Blind Spot Monitor function The Blind Spot Monitor function uses radar sensors to detect vehicles that are traveling in an adjacent lane in the area that is not reflected in the outside rear view mirror (the blind spot), and advises the driver of the vehicles existence via the outside rear view mirror indicator. The Blind Spot Monitor function detection areas The areas that vehicles can be detected in are outlined below. The range of the detection area extends to: Approximately 11.5 ft. (3.5 m) from the side of the vehicle The first 1.6 ft. (0.5 m) from the side of the vehicle is not in the detection area Approximately 9.8 ft. (3 m) from the rear bumper Approximately 3.3 ft. (1 m) forward of the rear bumper 348 SIENNA_OM_OM45472U_(U)