2011 Toyota Sequoia Owners Manual - Page 245

2-4. Using other driving systems n When two or more obstacles are detected simultaneously The buzzer system responds to the nearest zone. n When multiple obstacles are detected in front and behind the vehicle at the same time The buzzer will change in the following manner. l If an obstacle has been detected within 15.7 in. (400 mm) of the front or 33.5 (850 mm) in rear of the vehicle (a continuous buzzer is sounding), and a new obstacle is detected at the other end of the vehicle, the buzzer will sound 7 times then one continuous buzzer. l If an obstacle has been detected within 15.7 in. (400 mm) of the front or 33.5 in. (850 mm) in rear of the vehicle (a continuous buzzer is sounding), and a new obstacle is detected at the same way at the other end of the vehicle, the buzzer will sound 3 times then one continuous buzzer. 212