sensor LEXUS RX450h 2015 Owner's Manual

2402-4. Using other driving systems
Driving in vehicle-to-vehicle distance control mode
This mode employs a radar sensor to detect the presence of vehicles up
to approximately 400 ft. (120 m) ah ead, determines the current vehicle-
to-vehicle following distance, and op erates 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.
Example of constant speed cruising
When there are no vehicles ahead The vehicle travels at the speed set by the driver. The desired vehicle-to-vehi-
cle distance can also be set by operat ing the vehicle-to-vehicle distance con-
trol.
Example of deceleration cruising
When the vehicle ahead is driving slower than the set speed
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a grea ter reduction in vehicle speed is nec-
essary, the system applies the brakes. A warning tone warns you when the
system cannot decelerate sufficiently to prevent your vehicle from closing in
on the vehicle ahead.

2432-4. Using other driving systems
2
When driving ■
Dynamic radar cruise co ntrol can be set when●
The shift lever is in D or range 4 or higher of S has been selected.●
Vehicle speed is above approximately 30 mph (50 km/h).■
Accelerating after setting the vehicle speed
The vehicle can accelerate 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.■
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 AUTO mode or the high speed wiper operation position).●
When the snow mode is set.
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. ■
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.

2442-4. Using other driving systems
■
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 and plas-
tic objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canc eled if an obstruction is detected.
■
Warning lights, messages and buzzer s for dynamic radar cruise control
Warning lights, messages and buzzers are us ed to indicate a system malfunction or
to inform the driver of the need for caution while driving. (  P. 74 8 )■
Certification
For vehicles sold in the U.S.A.
FCC ID: HYQDNMWR004
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiatio n exposure limits set forth for an uncon-
trolled environment.
This equipment should be installed and op erated with minimum distance of 20 cm
between the radiator (a ntenna) and your body.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter. Grille cover
Radar sensor

2462-4. Using other driving systems
CAUTION■
Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise contro l in any of the following situations.
Doing so may result in inappropriate sp eed 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 thos e covered with rain, ice or snow●
On steep downhills, or where there are sudden changes between sharp up and
down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.●
At entrances to expressways●
When weather conditions are bad enough that they may prevent the sensors
from functioning correctly (fog, sn ow, sandstorm, heavy rain, etc.)●
When an approach warning buzzer is heard often●
When your vehicle is towing a trailer or during emergency towing■
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. 241) 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 (tra ilers with no load on board etc.)
●
Motorcycles traveling in the same lane

2472-4. Using other driving systems
2
When driving CAUTION■
Conditions under which the vehicle-to-vehicle distance control may not function
correctly
Apply the brakes as necessary in the foll owing 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■
Handling the radar sensor
Observe the following to ensure the cruise control system can function effectively.
Otherwise, the system may not function co rrectly 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.

2482-4. Using other driving systems
Intuitive parking assist The distance to obstacles measured by the sensors is communicated via
the multi-information display, screen (vehicles with the Lexus Display
Audio system) and a buzzer when parallel parking or maneuvering into a
garage is conducted. Always check the surrounding area when using this
system.
■ Types of sensors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
■ Setting the intuitive parking assist mode
Press the menu switch.
The multi-information display
will change modes to elec-
tronic features control mode.
Press the “  ” or “  ” switch
until the intuitive parking
assist mark appears in the
multi-information display. STEP 1
 : If equipped

2492-4. Using other driving systems
2
When driving
Display
When the sensors detect an obstacle , a graphic is shown on the multi-
information display and screen (vehic les with the Lexus Display Audio
system) depending on the position and distance to the obstacle.
■ Multi-information display
Front corner sensor operation
Front center sensor operation
Rear corner sensor operation
Rear center sensor operationPress 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.STEP 2

2512-4. Using other driving systems
2
When driving The distance display and buzzer
When a sensor detects an obstacle, the direction of and the approximate
distance to the obstacle are di splayed and the buzzer sounds.The site of the obstacle will flash (detection level 4 only).
■ Front corner sensors Detection
level Multi-information
display Approximate dis-
tance to obstacle Buzzer
2 1.6 to 1.2 ft.
(50 to 37.5 cm) Medium
3 1.2 to 0.8 ft.
(37.5 to 25 cm) Fast
4 0.8 f t. (25 cm) or
less Continuous

2522-4. Using other driving systems
■ Front center sensors
■ Rear corner sensors Detection
level Multi-information
display Approximate dis-
tance to obstacle Buzzer
1 3.3 to 1.6 ft.
(100 to 50 cm) Slow
2 1.6 to 1.3 ft.
(50 to 40 cm) Medium
3 1.3 to 1.0 ft.
(40 to 30 cm) Fast
4 1.0 ft. (30 cm) or
less Continuous
Detection
level Multi-information
display Approximate dis-
tance to obstacle Buzzer
2 1.6 to 1.2 ft.
(50 to 37.5 cm) Medium
3 1.2 to 0.8 ft.
(37.5 to 25 cm) Fast
4 0.8 f t. (25 cm) or
less Continuous

2532-4. Using other driving systems
2
When driving ■ Rear center sensors Detection
level Multi-information
display Approximate dis-
tance to obstacle Buzzer
1 4.9 to 2.0 ft.
(150 to 60 cm) Slow
2 2.0 to 1.5 ft.
(60 to 45 cm) Medium
3 1.5 to 1.2 ft.
(45 to 35 cm) Fast
4 1.2 ft. (35 cm) or
less Continuous