TOYOTA 2011 Tundra - Manual (Page 248)

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2-4. Using other driving systems
The distance and buzzer
n When a sensor detects an obstacle
The buzzer sounds.
Back sensors
Rear corner sensors
Zone
Distance
shown as
in in. (mm)
Indicator
and buzzer
Far
Approximately
70.9—45.3
(1800—1150)
Intermittent
Mid
Approximately
45.3—33.5
(1150—850)
Fast
intermittent
Near
Approximately
33.5 (850) or
less
Continuous
Zone
Distance
shown as
in in. (mm)
Indicator
and buzzer
Far
Approximately
33.5—20.5
(850—520)
Intermittent
Mid
Approximately
20.5—15.7
(520—400)
Fast
intermittent
Near
Approximately
15.7 (400) or
less
Continuous