sensor Lexus GX460 2012 Owner's Guide

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60J00U)
Driving in vehicle-to-vehicle distance control mode
This mode employs a sensor to detect the presence of vehicles up to
approximately 400 ft. (120 m) ahead, determines the current vehicle-to-
vehicle following the distance, and operates to maintain a suitable follow-
ing distance from the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on long
downhill slopes.

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60J00U)
■Dynamic radar cruise can be set when
●The shift lever is in D. (Recommended)
Dynamic radar cruise control can also be set when the shift lever is in the S posi-
tion and range 4 or higher has been selected.
●Vehicle speed is above approximately 30 mph (50 km/h).
■Accelerating after setting the vehicle speed
The vehicle can be accelerated normally. After acceleration, the set speed
resumes. However, during vehicle-to-vehicle distance control mode, the vehicle
speed may decrease below the set speed in order to maintain the distance to the
vehicle ahead.
■Set speed
The set speed may be unsustainable depending on driving circumstances.
■Automatic cancelation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the follow-
ing situations:
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●The sensor cannot operate correctly because it is covered in some way.
●The windshield wipers are operating at high speed (when the wiper switch is set
to the high speed wiper operation position).
●The driving mode is set to second start mode.
●Bad weather causes the detection function to become extremely unstable.
●Multi-terrain mode is selected other than OFF.
●The center differential lock/unlock is not completed within 5 seconds while the
dynamic radar cruise control system is on.
If vehicle-to-vehicle distance control driving is automatically canceled for any other
reason, there may be a malfunction in the system. Contact your Lexus dealer.

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2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
■Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following situations:
●Actual vehicle speed is more than approximately 10 mph (16 km/h) below the
set vehicle speed.
At this time, the memorized set speed is not retained.
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●The center differential lock/unlock is not completed within 5 seconds while the
dynamic radar cruise control system is on.
■Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle
distance control operates properly. (Some obstructions, such as snow, ice or plastic
objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canceled if an obstruction is detected.
■Warning lights and messages for dynamic radar cruise control
Warning lights and messages are used to indicate a system malfunction or to inform
the driver of the need for caution while driving. (→P. 700)
Grille cover
Radar sensor

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60J00U)
CAUTION
■To avoid inadvertent cruise control activation
Switch the cruise control off using the “ON-OFF” button when not in use.
■Situations unsuitable for the dynamic radar cruise control
Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an accident
resulting in death or serious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice and snow
●On steep downhills, or where there are sudden changes between sharp up and
down gradients
●At entrances to expressways
●When weather conditions are bad enough that they may prevent the sensors
from functioning correctly (f og, snow, sandstorm, etc.)
●When a buzzer is heard often
●When towing a trailer or emergency towing
●In traffic conditions where the vehicle is repeatedly sped up and slowed down at
frequent intervals

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2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
CAUTION
■When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in
front of you.
As the sensor may not be able to correctly detect these types of vehicles, the
approach warning (→P. 257) will not be activated, and a fatal or serious accident
may result.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving
●Vehicles with small rear ends (trailers with no load on board etc.)
●Motorcycles traveling in the same lane
■Conditions under which the vehicle-to-vehicle distance control may not function
correctly
Apply the brakes as necessary in the following conditions as the radar sensor may
not be able to correctly detect vehicles ahead, and a fatal or serious accident may
result:
●When water or snow thrown up by the surrounding vehicles hinders the function-
ing of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the luggage
compartment etc.)
●When the road curves or when the lanes are narrow
●When steering wheel operation or your position in the lane is unstable
●When the vehicle ahead of you decelerates suddenly
●Excessive exhaust gas (black smoke) is coming from the vehicle ahead or other
vehicles around you, obscuring your front view
●The rear section of the vehicle ahead is extremely dirty
●The vehicle ahead has higher ground clearance

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60J00U)
CAUTION
■To ensure the sensor functions correctly
Do not do the following to the sensor or grille as doing so may cause the sensor not
to function correctly and could result in an accident:
●Sticking or attaching anything to them
●Leaving them dirty
●Disassembling or subjecting them to strong shocks
●Modifying or painting them
●Replacing them with non-genuine parts
■Handling the radar sensor
Observe the following to ensure the cruise control system can function effectively.
Otherwise, the system may not function correctly and could result in an accident.
●Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or damage
them.
●Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunction. If the
sensor or surrounding area is subject to a strong impact, always have the area
inspected and adjusted by your Lexus dealer.
●Do not disassemble the sensor.
●Do not attach accessories or stickers to the sensor, grille cover or surrounding
area.
●Do not modify or paint the sensor and grille cover.
●Do not replace them with non-genuine parts.

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2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
Intuitive parking assist∗
∗: If equipped
The distance from your vehicle to nearby obstacles when parallel parking
or maneuvering into a garage is measured by the sensors and communi-
cated via the multi-information display and a buzzer. Always check the sur-
rounding area when using this system.
Vehicles with a navigation system
Refer to the “Navigation System Owner’s Manual”.
Vehicles without a navigation system
■ Types of sensors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors

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2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
DisplayWhen the sensors detect an obstacle, a graphic is shown on the multi-
information display depending on the position and distance to the obsta-
cle.
■ Optitron meter
Front corner sensor operation
Front center sensor operation
Front tire angle
Rear corner sensor operation
Rear center sensor operation
■ Accessory meter
When the vehicle is moving for-
ward or backward
A simplified image is displayed
when an obstacle is detected.

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60J00U)
The distance display and buzzerWhen a sensor detects an obstacle, the direction of and the approximate
distance to the obstacle are displayed and the buzzer sounds.
■ Distance display
Corner sensor
Approximate distance to obstacleOptitron meterAccessory meter
(insert display)
Front:
2.0 ft. (60 cm) to 1.6 ft. (47.5 cm)
Rear:
1.8 ft. (55 cm) to 1.2 ft. (37.5 cm)
(continuous)(blinking)
Front:
1.6 ft. (47.5 cm) to 1.1 ft. (35 cm)
Rear:
1.2 ft. (37.5 cm) to 0.8 ft. (25 cm)
(continuous)(blinking rapidly)
Front:
Less than 1.1 ft. (35 cm)
Rear:
Less than 0.8 ft. (25 cm)
(blinking)(continuous)

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GX460_U.S.A. (OM60J00U)Center sensors
Approximate distance to obstacleOptitron meterAccessory meter
(insert display)
Front:
3.3 ft. (100 cm) to 1.6 ft. (50 cm)
Rear:
4.9 ft. (150 cm) to 2.1 ft. (65 cm)
(continuous)(blinking slowly)
Front:
1.6 ft. (50 cm) to 1.2 ft. (37.5 cm)
Rear:
2.1 ft. (65 cm) to 1.6 ft. (50 cm)
(continuous)(blinking)
Front:
1.2 ft. (37.5 cm) to 1.0 ft. (30 cm)
Rear:
1.6 ft. (50 cm) to 1.3 ft. (40 cm)
(continuous)(blinking rapidly)
Front:
Less than 1.0 ft. (30 cm)
Rear:
Less than 1.3 ft. (40 cm)
(blinking)(continuous)