2011 LEXUS RX350 Owners Manual

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2

When driving
CAUTION
nCautions regarding the driving assist systems
Observe the following precautions.
Failure to do so may cause an accident resulting in death or serious injury.
lAssisting the driver to measure following distance
The dynamic radar cruise control is only intended to help the driver in determin-
ing the following distance between the driver's own vehicle and a designated
vehicle traveling ahead. It is not a mechanism that allows careless or inattentive
driving, and it is not a system that can assist the driver in low-visibility conditions. It
is still necessary for driver to pay close attention to the vehicle's surroundings.
lAssisting the driver to judge proper following distance.
The dynamic radar cruise control determines whether the following distance
between the driver's own vehicle and a designated vehicle traveling ahead is
appropriate or not. It is not capable of making any other type of judgement.
Therefore, it is absolutely necessary for the driver to remain vigilant and to deter-
mine whether or not there is a possibility of danger in any given situation.
lAssisting the driver to operate the vehicle
The dynamic radar cruise control has no capability to prevent or avoid a collision
with a vehicle traveling ahead. Therefore, if there is ever any danger, the driver
must take immediate and direct control of the vehicle and act appropriately in
order to ensure the safety of all involved.
nTo avoid inadvertent dynamic radar cruise control activation
Switch the cruise control off using the “ON-OFF” button when not in use.

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2-4. Using other driving systems
CAUTION
nSituations unsuitable for 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.
lIn heavy traffic
lOn roads with sharp bends
lOn winding roads
lOn slippery roads, such as those covered with rain, ice and snow
lOn steep downhills, or where there are sudden changes between sharp up and
down gradients
lAt entrances to expressways
lWhen weather conditions are bad enough that they may prevent the sensors
from functioning correctly (fog, snow, sandstorm, heavy rain, etc.)
lWhen a buzzer is heard often
lWhen your vehicle is towing anything
nWhen 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. 213) will not be activated, and an accident may result.
lVehicles that cut in suddenly
lVehicles traveling at low speeds
lVehicles that are not moving
lVehicles with small rear ends (trailers with no load on board etc.)
lMotorcycles traveling in the same lane

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When driving
CAUTION
nConditions 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 an accident may result:
lWhen water or snow thrown up by the surrounding vehicles hinders the function-
ing of the radar sensor
lWhen your vehicle is pointing upwards (caused by a heavy load in the luggage
compartment etc.)
lWhen the road curves or when the lanes are narrow
lWhen steering wheel operation or your position in the lane is unstable
lWhen the vehicle ahead of you decelerates suddenly
nTo ensure the radar 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:
lSticking or attaching anything to them
lLeaving them dirty
lDisassembling or subjecting them to strong shocks
lModifying or painting them
lReplacing them with non-genuine parts
nHandling the radar sensor
Observe the following to ensure the cruise control system can function effectively:
lKeep the sensor and front grille clean at all times.
Clean the sensor and front grille with a soft cloth so you do not mark or damage
them.
lDo 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.
lDo not disassemble the sensor.
lDo not attach accessories or stickers to the sensor, grille or surrounding area.
lDo not modify or paint the sensor and grille.

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2-4. Using other driving systems
Intuitive parking assist∗
The distance to obstacles measured by the sensors is communicated via
the multi-information display and a buzzer when parallel parking or
maneuvering into a garage is conducted. Always check the surrounding
area when using this system.
nTypes of sensors
Front corner sensors
Rear corner sensors
Rear center sensors
nSetting the Intuitive parking assist mode
Press the menu switch.
The multi-information display
will change modes to elec-
tronic features control mode.
Press the “ENTER” switch
upwards or downwards until
the intuitive parking assist
mark appears in the multi-
information display.
STEP1
∗: If equipped

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When driving
Display
When the sensors detect an obstacle, the graphic is shown on the multi-
information display depending on the position and distance to the obsta-
cle.
Front corner sensor operation
Rear corner sensor operation
Rear center sensor operation
Press the “ENTER” switch to
change to “ON”.
The intuitive parking assist indi-
cator will be displayed.
Each pressing of the switch
turns the intuitive parking assist
on and off.
When on, the buzzer sounds to
inform the driver that the system
is operational.
Press the menu switch to
change to the normal display.
STEP2

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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.
nFront corner sensors
nRear corner sensors
Detection
level
Multi-information
display
Approximate dis-
tance to obstacleBuzzer
22.0 to 1.6 ft.
(60 to 47.5 cm)Medium
31.6 to 1.2 ft.
(47.5 to 35 cm)Fast
41.2 ft. (35 cm) or
lessContinuous
Detection
level
Multi-information
display
Approximate dis-
tance to obstacleBuzzer
21.6 to 1.2 ft.
(50 to 37.5 cm)Medium
31.2 to 0.8 ft.
(37.5 to 25 cm)Fast
40.8 f t. (25 cm) or
lessContinuous

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nRear center sensors
Detection
level
Multi-information
display
Approximate dis-
tance to obstacleBuzzer
1 4.9 to 2.0 ft.
(150 to 60 cm)Slow
22.0 to 1.5 ft.
(60 to 45 cm)Medium
31.5 to 1.2 ft.
(45 to 35 cm)Fast
41.2 ft. (35 cm) or
lessContinuous

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Detection range of the sensors
Approximately 2.0 ft. (60 cm)
Approximately 1.6 ft. (50 cm)
Approximately 4.9 ft. (150 cm)
The diagram shows the detection
range of the sensors. Note that the
sensors cannot detect obstacles
that are extremely close to the
vehicle.
The range of the sensors may
change depending on the shape of
the object etc.
nThe intuitive parking assist can be operated when
lFront corner sensors: