Lexus GS430 User Manual page 404

When the intuitive parking assist determines that the
collision will be avoided with the present steering angle:
The indicator will come on in green.
However, if the sensors detect and determine an obstacle at
an angle to the front of the vehicle, the indicator will not come
on.
Beeps (except for avoidable collisions at the present
steering angle):
As distance to the obstacle gets closer, the interval of the
intermittent sound gets shorter, and then finally to a continuous
sound when the distance between the vehicle and the obstacle
is less than about 25 cm (0.8 ft.).
CAUTION
D When an obstacle is detected within about 25 cm (0.8
ft.) from the vehicle, the dual sensors will change the
determination to an unavoidable collision.
D With long obstacles such as walls, the decision of the
sensor may change as the obstacle gets closer; from
certain avoidance to avoidance if steering is
changed; from certain avoidance to unavoidable
collision; and there are also times when the decision
will be changed from avoidance if steering is
changed, to certain collision.
When you move your vehicle, be sure to confirm a safe
distance around your vehicle with your eyes and drive
slowly, or an accident or injury may result.
STARTING AND DRIVING
Rear corner sensors
G31068
" 1 About 35 cm (1.1ft.) to about 50 cm (1.5 ft.)
2 About 25 cm (0.8 ft.) to about 35 cm (1.1 ft.)
3 Less than about 25 cm (0.8 ft.)
Display:
The indicator will flash yellow depending on the distance to the
obstacle. When the distance between the vehicle and the
obstacle is less than about 25 cm (0.8 ft.), the yellow indicator
will turn red.
Beeps :
As distance to the obstacle gets closer, the interval of the
intermittent sound gets shorter, and then finally to a continuous
sound when the distance between the vehicle and the obstacle
is less than about 25 cm (0.8 ft.).
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