2006 Lexus GS430 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2005 PROD. OWNER'S MANUAL (OM30649U)

STARTING AND DRIVING
372
CAUTION
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. To avoid an
accident or injury, be sure to confirm a safe distance
around your vehicle with your eyes and drive slowly.
(C) Collision will be avoide d with the present steering
angle
G31057
 3 About 50 cm (1.5 ft.) to about 100 cm (3.0 ft.)
4About 37.5 cm (1.1 ft.) to about 50 cm (1.5 ft.)
5About 25 cm (0.8 ft.) to about 37.5 cm (1.1 ft.)

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373
1Multiinformation display:
The indicator bars will come on depending on the
distance to the obstacle.
2Screen:
The indicator bars will come on in green depending on the
distance to the obstacle. In addition, the current direction
of the tires is also indicated in 3 stages.
Beeps:
Beeps will not sound.
CAUTION
To avoid an accident or injury, observe the following.
When you move your vehicle, be sure to confirm a safe
distance around your vehicle with your eyes and drive
slowly.
 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 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.
Rear corner sensors
G31058
 3 About 37.5 cm (1.1 ft.) to about 50 cm (1.5 ft.)
4About 25 cm (0.8 ft.) to about 37.5 cm (1.1 ft.)
5Less than about 25 cm (0.8 ft.)

STARTING AND DRIVING
374The rear corner sensor only operates when the
transmission is in “R”, it checks the approximate distance
to obstacles at an angle to the rear of the vehicle, and
sounds a warning depending on the distance.
1
Multiinformation display:
The indicator bars will come on depending on the
distance to the obstacle and will flash when the distance
between the vehicle and the obstacle is less than about
25 cm (0.8 ft.).
2 Screen:
The indicator bars will come on in 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 bars 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.).
CAUTION
When backing up, be sure to confirm a safe distance
around your vehicle with your eyes to avoid an accident.
Back sensors
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 3
About 60 cm (2.0 ft.) to about 150 cm (5.0 ft.)
4About 45 cm (1.4 ft.) to about 60.0 cm (2.0ft.)
5About 35 cm (1.1 ft.) to about 45.0 cm (1.4 ft.)
6Less than about 35 cm (1.1 ft.)

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375
The back sensor only operates when the transmission is
in “R”, it checks the approximate distance to obstacles
close to the rear of the vehicle, and sounds a warning
depending on the distance.
1
Multiinformation display:
The indicator bars will come on depending on the
distance to the obstacle and will flash when the distance
between the vehicle and the obstacle is less than about
35 cm (1.1 ft.).
2 Screen:
The indicator bars will come on in yellow depending on
the distance to the obstacle. When the distance between
the vehicle and the obstacle is less than about 35 cm (1.1
ft.), the yellow indicator bars 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 35 cm (1.1 ft.).
CAUTION
When backing up, be sure to confirm a safe distance
around your vehicle with your eyes to avoid an accident.
Numerous obstacles are detected on the front
and rear of the vehicle simultaneously
G31060
When obstacles are detected on the front and rear of the
vehicle at the same time; the multiinformation display
and screen illuminate their relevant indicator bars. And
beeps are as follows:
1
Obstacles detected on the front and rear of the
vehicle are not in areas where continuous beeping
should sound:

STARTING AND DRIVING
376The warning for the obstacle closer to the vehicle will be
issued.
The above illustration indicates the obstacle detected
by the back sensors is closer to the vehicle. So, the warning for
the obstacle detected by the back sensors will be given.
2 The obstacle detected on the front or rear of the
vehicle is in an area where continuous beeping
should sound:
If the possibility of collision with the obstacle is high as shown,
the system warns the driver by continuous beeping (repeating
6 intermittent beeps and one longer beep as one cycle).
3 Both obstacles detected on the front and rear of the
vehicle are in areas where continuous beeping
should sound:
If the possibility of collision with the obstacles is very high as
shown, the system warns the driver by continuous beeping
(repeating 2 quick beeps and one longer beep as one cycle).
CAUTION
It might be difficult to hear beeps due to the volume of
audio or air flow noise of air conditioning. To avoid an
accident or injury, drive slowly using the brakes while
confirming a safe distance around your vehicle with
your eyes.
Detection range of sensors*
G31061
 1 About 3 m (10 ft.) 2About 1 m (3 ft.)
3About 1m 50 cm (5 ft.) 4About 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.

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377
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:
 When the bumper is damaged.
 When the part near the sensors is subjected to a strong
impact.
 When an accessory is installed within the sensor detection
range.
 When snowflakes or mud gets on the sensors.
(If removed, the system will work properly.)
 When water is splashed from a high pressure car wash or
steam on the sensors.
 When a sensor is covered with your hand.
 When the vehicle is tilted.
 In extreme hot or cold weather
(In extreme cold weather, the error display appears and the
system becomes inoperative.)
 When driving on bumpy roads, slopes, gravelled roads or
grass. 
Devices issuing ultrasonic waves are operated around your
vehicle, such as a horn from another vehicle, motorcycle
engine, air braking sound from heavy −duty vehicles.
 When another vehicle equipped with ultrasonic sensors
gets close to your vehicle.
 When heavy rain or water is splashed over the vehicle.
(Drive carefully as the braking distance may be affected.)
 When a radio antenna or fender pole is mounted on your
vehicle.
 If towing eyelet is installed on your vehicle.
 When you are driving towards a tall curb stone or curb stone
having right angle.
 The detection range for an object such as a traffic sign may
be shortened.
 An object just under the bumper cannot be detected.
Although an object lower than the location of sensors is
once detected, the detection might be stopped when your
vehicle gets closer to the object.
 When an obstacle is very close to the sensors.

STARTING AND DRIVING
378The intuitive parking assist may not detect the following:

Thin objects such as wire or rope
 Sound wave absorbing objects such as cotton or snow
 Objects with a sharp edge
 Tall objects with the upper part projected
 Shorter objects
Intuitive parking assist failure warning
If an error is detected when the intuitive parking assist is
turned on, the vehicle symbol comes on or flashes with
beeping sounds.
At this time steering guidance is temporarily stopped.
However, the sensors functioning properly continue their
obstacle detection. For details, see “When the detection range
of the sensors is shorter” on page 381.
The intuitive parking assist failure warning display is not given
in either of the following operations:
 Changing to another screen
 Turning off the main switch for the intuitive parking assist

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379
When snowflakes or mud gets on the sensors
G31062
 1
Multiinformation display 2Screen
If foreign matter gets on the sensors and the intuitive
parking assist cannot detect the object properly, the
above message appears. At this time, the vehicle symbol
and the indicator bars corresponding to the faulty
sensors flash for about 7 seconds and 2 beeps sound 5
times.
After about 7 seconds, the sensor indicator bars will
cease flashing, however will stay lit until the affected
sensor is cleaned. Furthermore, the vehicle symbol will
continue to flash until the affected sensor is cleaned.
The above illustration shows the sensor on the left front of the
vehicle malfunctioning.
If the failure warning does not go off even after the foreign
matter is removed, the intuitive parking assist may be
malfunctioning. Have it checked by your Lexus dealer. When the sensor is malfunctioning
G31063
 1
Multiinformation display 2Screen
If the sensor cable is broken and the intuitive parking
assist cannot detect the object properly, the above
message appears. At this time, the indicator bars
corresponding to the faulty sensor flash for about 7
seconds and 2 beeps sound 5 times.
The indicator bars continue lighting after flashing.
The above illustration shows the sensor on the right rear of the
vehicle malfunctioning.
If this message appears, have the sensor checked by your
Lexus dealer.