Lexus GS430 User Manual page 407

Detection range of sensors*
G31061
" 1 About 3 m (10 ft.)
2 About 1 m (3 ft.)
3 About 1m 50 cm (5 ft.) 4 About 50 cm (1.5 ft.)
The sensor detection range is limited around the bumper.
Be sure to confirm a safe distance around your vehicle
and drive slowly.
STARTING AND DRIVING
NOTE:
* The detection range can be changed from about 50 cm
(1.5 ft.) for dual sensors and about 60 cm (2 ft.) for back
sensors.
Ask your Lexus dealer for details.
The intuitive parking assist may not work properly in the
following cases:
D When the bumper is damaged.
D When the part near the sensors is subjected to a strong
impact.
D When an accessory is installed within the sensor detection
range.
D When snowflakes or mud gets on the sensors.
(If removed, the system will work properly.)
D When water is splashed from a high pressure car wash or
steam on the sensors.
D When a sensor is covered with your hand.
D When the vehicle is tilted.
D In extreme hot or cold weather
(In extreme cold weather, the error display appears and the
system becomes inoperative.)
D When driving on bumpy roads, slopes, gravelled roads or
grass.
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