Lexus LS 600h L 2012 Owner's Manual page 255

2-4. Using other driving systems
The distance display and buzzer
When a sensor detects an obstacle, the direction of and the approximate
distance to the obstacle are displayed and the buzzer sounds.
Center sensors
Level
Display
example of
front center
sensor
Buzzer
Corner sensors and side sensors
Level
Display
example of
front right
sensor
Buzzer
252
1 2
Slow Medium
1 2
-
- Medium
3 4
Fast Continuous
3 4
Fast Continuous