warning lexus LC500 2018 Owner's Manual

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4-5. Using the driving support systems
■Warnings may not occur when
In the following instances, warnings
may not occur even when the vehicle-
to-vehicle distance is small.
 When the speed of the preceding
vehicle matches or exceeds your
vehicle speed
 When the preceding vehicle is trav-
eling at an extremely slow speed
 Immediately after the cruise control
speed was set
 When depressing the accelerator
pedal
When constant speed control mode is
selected, your vehicle will maintain a
set speed without controlling the vehi-
cle-to-vehicle distance. Select this
mode only when vehicle-to-vehicle dis-
tance control mode does not function
correctly due to a dirty radar sensor,
etc.
1 With the cruise control off, press
and hold the cruise control main
switch for 1.5 seconds or more.
Immediately after the switch is pressed, the
radar cruise control indicator will come on. Afterwards, it switches to the cruise con-trol indicator.
Switching to constant speed control mode is only possible when operating the switch
with the cruise control off.
2 Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 40 km/h [25 mph])
and press the -/SET switch to set
the speed.
Cruise control “SET” indicator will come on.
The vehicle speed at the moment the switch is released becomes the set speed.
Adjusting the speed setting: P.233
Canceling and resuming the speed setting:
 P.235
■Dynamic radar cruise control with full-
speed range can be set when
●The shift position is in D.
●LC500: Range 4 or higher of D has been
Selecting constant speed con-
trol mode

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4-5. Using the driving support systems
becomes available again.
■Warning messages and buzzers for dynamic radar cruise control with full-speed range
Warning messages and buzzers are used to indicate a system malfun ction or to inform
the driver of the need for caution while driv- ing. If a warning mess age is shown on the multi-information display, read the message
and follow the instructions.
■When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the brake pedal when deceleration of the system is insuffi-
cient or operate the accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the approach warning ( P.235) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same
lane
●Vehicles with small rear ends (trailers with no load on board, etc.)
●Motorcycles traveling in the same lane
●When water or snow thrown up by the
surrounding vehicles hinders the detect- ing of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the luggage compartment, etc.)
●Preceding vehicle has an extremely high ground clearance
■Conditions under which the vehicle-to-vehicle distance control mode may not function correctly
In the case of the following conditions, operate the brake pedal (or accelerator
pedal, depending on the situation) as nec- essary.
As the sensor may not be able to correctly detect vehicles ahead, the system may not operate properly.
●When the road curves or when the lanes
are narrow
●When steering wheel operation or your
position in the lane is unstable

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4-5. Using the driving support systems
Driving
Resuming is available when the vehicle
speed is more than approximately 40
km/h (25 mph).
■Cruise control can be set when
●The shift position is in D.
●LC500: Range 4 or higher of D has been selected by using the paddle shift.
●Vehicle speed is above approximately 40 km/h (25 mph).
■Accelerating after setting the vehicle speed
●The vehicle can be accelerated normally. After acceleration, the set speed
resumes.
●Even without canceling the cruise con-
trol, the set speed can be increased by first accelerating the vehicle to the desired speed and then pressing the -
/SET switch to set the new speed.
■Automatic cruise control cancelation
Cruise control will stop maintaining the
vehicle speed in any of the following situa- tions.
●Actual vehicle speed falls more than approximately 16 km/h (10 mph) below the preset vehicle speed.
●Actual vehicle speed is below approxi-mately 40 km/h (25 mph).
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned
off.
■If the warning message for the cruise control is shown on the multi-informa-tion display
Press the cruise control main switch once to deactivate the system, and then press the
switch again to reactivate the system. If the cruise control speed cannot be set or if the cruise control cancels immediately
after being activated, there may be a mal- function in the cruise control system. Have the vehicle inspected by authorized Lexus
retailer or Lexus authorized repairer, or any
reliable repairer.
WARNING
■To avoid operating the cruise control
by mistake
Switch the cruise control off using the
cruise control main switch when not in use.
■Situations unsuitable for cruise con-trol
Do not use cruise control in any of the following situations.
Doing so may result in loss of 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 cov-
ered with rain, ice or snow
●On steep downhills Vehicle speed may exceed the set speed when driving down a steep hill.
●During emergency towing

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4-5. Using the driving support systems
Driving
• When the Lexus parking assist-sensor is turned off once and turned on again• When the engine switch
is turned off once and turned to IGNI- TION ON mode again
■If “Clean Parking Assist Sensor” is dis-played on the multi-information display
A sensor may be dirty or covered with snow or ice. In such cases, if it is removed from
the sensor, the system should return to nor- mal.
Also, due to the sensor being frozen at low temperatures, a malfunction display may appear or an obstacle may not be detected.
If the sensor thaws out, the system should return to normal.
■If “Parking Assist Malfunction” or “Park-ing Assist Malfunction Visit Your
Dealer” is displayed on the multi-infor- mation display
There is a malfunction and the device may not be working properly.
Have the vehicle inspected by any autho- rized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Sensor detection information
●The sensor’s detection areas are limited
to the areas around the vehicle’s front and rear bumpers.
●Certain vehicle conditions and the sur-rounding environment may affect the ability of the sensor to correctly detect
obstacles. Particular instances where this may occur are listed below.• There is dirt, snow or ice on the sensor.
(Wiping the sensors will resolve this problem.)• The sensor is frozen. (Thawing the area
will resolve this problem.)
In especially cold weather, if a sensor is fro-
zen the screen may show an abnormal dis-
play, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.• On an extremely bumpy road, on an
incline, on grav el, or on grass. • The vicinity of the vehicle is noisy due to
vehicle horns, motorcycle engines, air brakes of large vehicles, or other loud noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensor in the vicinity.• The sensor is splashed with water or
heavy rain. • The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed. • The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (low- ered suspension etc.) is installed.• People may not be detected if they are
wearing certain types of clothing.
In addition to the examples above, there are
instances in which, because of their shape,
signs and other objects may be judged by
the sensor to be closer than they are.
●The shape of the obstacle may prevent the sensor from detecting it. Pay particu-
lar attention to the following obstacles: • Wires, fences, ropes, etc.• Cotton, snow and other materials that
absorb sound waves • Sharply-angled objects•Low obstacles
• Tall obstacles with upper sections pro- jecting outwards in the direction of your vehicle
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance may shorten, or detection may be impos-
sible. • Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at slow speeds, there is a possibility that the
obstacle will come within the sensor’s detection areas before the display is shown and the warning beep sounds.

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4-5. Using the driving support systems
• Thin posts or objects lower than the sen- sor may not be detected when approached, even if they have been
detected once. • It might be difficult to hear beeps due to the volume of the audio system or air flow
noise of the air conditioning system. • It might be difficult to hear beeps due to the sounds of other systems.
■Customization
Some functions can be customized. ( P.423)
■Detection range of the sensors
Approximately 100 cm (3.3 ft.)
WARNING
■When using the Lexus parking assist- sensor
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely and pos-sibly cause an accident.
●Do not use the sensor at speeds in
excess of 10 km/h (6 mph).
●The sensors’ detection areas and reac- tion times are limited. When moving forward or reversing, check the areas
surrounding the vehicle (especially the sides of the vehicle) for safety, and drive slowly, using the brake to control
the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.
NOTICE
■When using Lexus parking assist-sen-sor
In the following situations, the system may not function correctly due to a sen-
sor malfunction etc. Have the vehicle checked by any authorized Lexus retailer or Lexus authorized repairer, or any reli-
able repairer.
●The Lexus parking assist-sensor oper- ation display flashes or shows continu-
ously, and a beep sounds when no obstacles are detected.
●If the area around a sensor collides with something, or is subjected to
strong impact.
●If the bumper or grille collides with something.
●If the display flashes or shows continu-ously without beeping, except when
the mute function has been turned on.
●If a display error occurs, first check the sensor. If the error occurs even when there is
no ice, snow or mud on the sensor, it is likely that the sensor is malfunctioning.
■Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor mal- functioning.
Sensor detection display, obsta-
cle distance
A

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4-5. Using the driving support systems
Driving
WARNING
■Handling the radar sensor
Blind Spot Monitor sensors are installed
behind the left and right sides of the rear bumper respectively. Observe the fol-lowing to ensure the Blind Spot Monitor
can function correctly.
●Keep the sensors and the surrounding areas on the rear bumper clean at all times.
If a sensor or its surrounding area on the rear bumper is dirty or covered with snow, the Blind Spot Monitor may
not operate and a warning message ( P.249) will be displayed. In this situ- ation, clear off the dirt or snow and
drive the vehicle with the operation conditions of the BSM function ( P.255) satisfied for approximately
10 minutes. If the warning message does not disappear, have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
●Do not subject a sensor or its sur-rounding area on the rear bumper to a
strong impact. If a sensor is moved even slightly off position, the system may malfunction
and vehicles may not be detected cor- rectly.In the following situations, have your
vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
• A sensor or its surrounding area is subject to a strong impact.
• If the surrounding area of a sensor is scratched or dented, or part of them
has become disconnected.
●Do not disassemble the sensor.
●Do not attach stickers to the sensor or surrounding area on the rear bumper.
●Do not modify the sensor or surround-ing area on the rear bumper.
●Do not paint the rear bumper any
color other than an official Lexus color.

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4-5. Using the driving support systems
• When the sensor is misaligned due to a strong impact to the sensor or its sur-rounding area
• When the distance between your vehicle and a guardrail, wall, etc. that enters the detection area is short
• When driving up and down consecutive steep inclines, such as hills, dips in the road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehi-cle traveling in a lane other than the adja-
cent lanes enters the detection area • When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When the tires are slipping or spinning • When the distance between your vehicle and a following vehicle is short
• When an accessory (such as a bicycle carrier) or towing eyelet is installed to the rear of the vehicle
■Operation of the RCTA function
The RCTA function uses radar sensors to detect vehicles approaching from the
right or left at the rear of the vehicle and alerts the driver of the presence of such
vehicles by flashing the outside rear view mirror indicators and sounding a buzzer.
Approaching vehicles
Detection areas of approaching vehicles
■RCTA icon display
When a vehicle approaching from the
right or left at the rear of the vehicle is
detected, the following will be dis-
played on the monitor screen
WARNING
■Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care to observe your surroundings.
The BSM function is a supplementary function which alerts the driver that a
vehicle is in a blind spot of the outside rear view mirrors or is approaching rap-idly from behind into a blind spot. Do not
overly rely on the BSM function. As the function cannot judge if it is safe to change lanes, over reliance could lead to
an accident resulting in death or serious injury.
As the system may not function correctly under certain conditions, the driver’s own visual confirmation of safety is necessary.
RCTA function
A
B

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4-5. Using the driving support systems
Driving
vehicle • When the parking space faces a street and vehicles are being driven on the
street
• When the distance between your vehicle
and metal objects, such as a guardrail, wall, sign, or parked vehicle, which may reflect electrical waves toward the rear of
the vehicle, is short • When a towing eyelet is installed to the rear of the vehicle.
*:If equipped
Multi-information display ( P.92)
Displays the status of the active rear wing
Active rear wing switch
Operates the active rear wing manually
Indicator
Illuminates when the active rear wing is
raised and turns off when it is retracted
WARNING
■Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care
to observe your surroundings.
The RCTA function is only a supplemen-
tary function which alerts the driver that a vehicle is approaching from the right or left at the rear of the vehicle. As the
RCTA function may not function cor- rectly under certain conditions, the driver’s own visual confirmation of safety
is necessary. Over reliance on this func- tion may lead to an accident resulting death or serious injury.
Active rear wing*
The vehicle is equipped with an
active rear wing that operates auto-
matically while the vehicle is being
driven. This active rear wing
enhances aerodynamic perfor-
mance, especially at high speeds,
contributing to a more stable ride.
The active rear wing can be con-
trolled manually using a switch.
System components
A
B
C

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4-5. Using the driving support systems
■The active rear wing can be operated when
●The engine switch

is in IGNITION ON mode .
●The trunk is closed.
●The active rear wing has been activated
in a customized setting.
■Conditions which st op the operation
In the following situations operation of the
active rear wing will stop:
●The engine switch is
turned to ACCESSORY mode or off while the active rear wing is operating.
●The trunk is opened while the active rear wing is operating.
●The raising operation of the active rear wing is interrupted by an object, etc.
●The active rear wing is operated in an unusual manner causing it to stop at an irregular position.
In such cases, pressing the active rear wing switch will fully raise the active rear wing.
Or, begin driving the vehicle and the active rear wing will raise automatically when the vehicle speed reaches 25 km/h (16 mph).
■When there is a malfunction in the sys-
tem
A warning message will be displayed on the
multi-information display. ( P.378)
■Customization
The active rear wing can be turned on/ off.
(Customizable features: P.423)
The active rear wing will operate auto-
matically at the following speeds
according to the selected driving
mode ( P.242).
(Always observe the legal speed limit
when driving on public roads.)
 When other than Eco drive mode is
selected
Up: Approximately 80 km/h (50
mph)
Down: Approximately 40 km/h (25
mph)
 When Eco drive mode is selected
Up: Approximately 130 km/h (80
mph)
Down: Approximately 40 km/h (25
mph)
Operate the active rear wing switch to
raise/retract the active rear wing man-
ually.
The active rear wing retracts when it is
raised and raises when retracted.
However, the active rear wing does not
respond to switch operations while the
NOTICE
■To prevent system damage
●Do not apply pressure to the active rear wing when pushing or pulling the
vehicle.
●Do not lean on the active rear wing.
●Do not attach any accessories or other objects to the active rear wing.
●Do not modify or disassemble the active rear wing.
●Do not subject the active rear wing to
severe impact.
■To prevent 12-volt battery discharge
Do not operate the active rear wing
repeatedly while the engine is turned off.
Automatic operation
Changing to manual operation

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4-5. Using the driving support systems
Driving
active rear wing is operating.
*: Press and hold the switch until the indi-
cator turns off. If the switch is released
while the active rear wing is moving, it
will return to the raised position auto-
matically.
■Restoring automatic operation after the active rear wing is operated manually
If the active rear wing is operated manually, automatic operation will resume according to the vehicle speed.
Vehicle speedUp/Down
0 km/h (0 mph)
(vehicle stopped)
Press/Press and
hold*
Approximately 0 –
20 km/h (0 – 12
mph)
Operation not pos-
sible
Approximately 20 –
120 km/h (12 – 75
mph)
Press/Press
Approximately 120
km/h (75 mph) or
more
Operation not pos-
sible
WARNING
■When manually operating the active rear wing
Observe the following precautions before operating the active rear wing.
Failure to do so may result in death or serious injury.
●Ensure that the surrounding area is free of any objects that may come into
contact with or get caught on the active rear wing.
●If there are people near the active rear wing, make sure that there is no possi-
bility of their clothing, personal belongings or body parts getting caught. Children especially should be
warned not to touch the active rear wing while it is being operated.
●If there is a risk that an object may become caught on the active rear wing during operation, stop operation
immediately.