Toyota 2014 Sienna Manual page 320

2-4. Using other driving systems
The distance display and buzzer
When a sensor detects an obstacle, the direction of and the approxi-
mate distance to the obstacle are displayed and the buzzer sounds.
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Corner sensor operation and distance to an obstacle
The system operates when the vehicle approaches within the fol-
lowing distances to an obstacle. The indicator flashes and the
buzzer sounds when the system is operating.
Front (if equipped)
Approximate distance to obstacle
2.0 to 1.2 ft. (60 to 37.5 cm)
1.2 to 0.8 ft. (37.5 to 25 cm)
0.8 ft. (25 cm) or less
Rear
Approximate distance to obstacle
2.8 to 1.2 ft. (85 to 37.5 cm)
1.2 to 0.8 ft. (37.5 to 25 cm)
0.8 ft. (25 cm) or less
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SIENNA_OM_OM45483U_(U)
Indicator and buzzer / Color
Intermittent / yellow
Fast intermittent / yellow
Continuous / red
Indicator and buzzer / Color
Intermittent / yellow
Fast intermittent / yellow
Continuous / red