lexus LC500 2018 Owner's Manual

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4-5. Using the driving support systems
Driving
WARNING
●Assisting the driver to measure follow- ing distance
The dynamic radar cruise control with
full-speed range is on ly intended to help
the driver in determ ining the following
distance between the driver’s own vehi-
cle 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 neces-
sary for driver to pay close attention to
the vehicle’s surroundings.
●Assisting the driver to judge proper following distance
The dynamic radar cruise control with
full-speed range determines whether the
following distance between the driver’s
own vehicle and a designated vehicle
traveling ahead is within a set range. It is
not capable of making any other type of
judgement. Therefore, it is absolutely
necessary for the driver to remain vigi-
lant and to determine whether or not
there is a possibility of danger in any
given situation.
●Assisting the driver to operate the vehicle
The dynamic radar cruise control with
full-speed range has limited 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 vehi-
cle and act appropriately in order to
ensure the safety of all involved.
■To avoid inadvertent dynamic radar cruise control with full-speed range
activation
Switch the dynamic radar cruise control
with full-speed range off using the cruise control main switch when not in use.
■Situations unsuitable for dynamic radar cruise control with full-speed
range
Do not use dynamic radar cruise control
with full-speed range in any of the follow- ing situations.
Doing so may result in inappropriate speed control and could cause an acci-dent resulting in death or serious injury.
●Roads where there are pedestrians,
cyclists, etc.
●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, 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 freeways and highways
●When weather conditions are bad enough that they may prevent the sen-sors from detecting correctly (fog,
snow, sandstorm, heavy rain, etc.)
●When there is rain, snow, etc. on the front surface of the radar sensor or camera sensor
●In traffic conditions that require fre-
quent repeated acceleration and deceleration
●During emergency towing

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4-5. Using the driving support systems
This mode employs a radar sensor to detect the presence of vehicles up to approx-
imately 100 m (328 ft.) ahead, determines the current vehicle-to-vehicle following
distance, and operates to maintain a suitable following distance from the vehicle
ahead.
Note that vehicle-to-vehicle distance will clos e 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-vehicle distance
can also be set by operating the vehicle-to-vehicle distance switch.
Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appears
When a vehicle is detected running ahead of you, the system automatically decelerates
your vehicle. When a greater reduction in ve hicle speed is necessary, the system applies
the brakes (the stop lights will come on at th is time). The system will respond to changes in
the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by
the driver. Approach warning warns you when the system cannot decelerate sufficiently to
prevent your vehicle from closing in on the vehicle ahead.
When the vehicle ahead of you stops, your vehi cle will also stop (vehicle is stopped by sys-
tem control). After the vehicle ahead starts off, pressing the +/RES switch or depressing the
accelerator pedal will resume follow-up cruising.
WARNING
●When an approach warning buzzer is heard often
Driving in vehicl e-to-vehicle distance control mode
A
B

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4-5. Using the driving support systems
Driving
Example of acceleration
When there are no longer any preceding vehicles driving slower than the set
speed
The system accelerates until the set speed is reached. The system then returns to constant
speed cruising.
1 Press the cruise control main switch
to activate the cruise control.
Radar cruise control indicator will come on and a message will be displayed on the multi-information display.
Press the switch again to deactivate the cruise control.
If the cruise control main switch is pressed and held for 1.5 seconds or more, the sys-
tem turns on in constant speed control mode. ( P.236)
2Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 50 km/h [30 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.
If the switch is operated while the vehicle
speed is below approximately 50 km/h (30 mph) and a preceding vehicle is pres-ent, the set speed will be adjusted to
approximately 50 km/h (30 mph).
To change the set speed, press the
+/RES or -/SET switch until the
desired set speed is displayed.
1 Increases the speed
(Except when the vehicle has been
stopped by system control in vehi-
cle-to-vehicle distance control
mode)
2 Decreases the speed
Fine adjustment: Press the switch.
C
Setting the vehicle speed (vehi-
cle-to-vehicle distance control
mode)
Adjusting the set speed

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4-5. Using the driving support systems
Large adjustment: Press and hold the
switch to change the speed, and release
when the desired speed is reached.
In the vehicle-to-vehicle distance con-
trol mode, the set speed will be
increased or decreased as follows:
For Europe
Fine adjustment: By 5 km/h (3.1 mph)*1 or
5 mph (8 km/h)*2 each time the switch is
pressed
Large adjustment: Increases or decreases
in 5 km/h (3.1 mph)*1or 5 mph (8 km/h)*2
increments for as long as the switch is held
Except for Europe
Fine adjustment: By 1 km/h (0.6 mph)*1 or 1
mph (1.6 km/h)*2 each time the switch is
pressed
Large adjustment: Increases or decreases
in 5 km/h (3.1 mph)*1 or 5 mph (8 km/h)*2
increments for as long as the switch is held
In the constant speed control mode
( P.236), the set speed will be
increased or decreased as follows:
Fine adjustment: By 1 km/h (0.6 mph)*1 or 1
mph (1.6 km/h)*2 each time the switch is
pressed
Large adjustment: The speed will continue
to change while the switch is held.
*1: When the set speed is shown in “km/h”
*2: When the set speed is shown in “MPH”
Pressing the vehicle-to-vehicle dis-
tance switch changes the vehicle-to-
vehicle distance as follows:
1 Long
2 Medium
3 Short
The vehicle-to-vehicle distance is set auto-
matically to long mode when the engine
switch <power switch> is turned to IGNI-
TION ON mode <ON mode>.
If a vehicle is running ahead of you, the pre-
ceding vehicle mark will also be dis-
played.
Select a distance from the table below.
Note that the distances shown corre-
spond to a vehicle speed of 80 km/h
(50 mph). Vehicle-to-vehicle distance
increases/decreases in accordance
with vehicle speed. When the vehicle is
stopped by system control, the vehicle
stops at a certain vehicle-to-vehicle
distance depending on the situation.Changing the vehicle-to-vehicle
distance (vehicle-to-vehicle dis-
tance control mode)
Vehicle-to-vehicle distance set-
tings (vehicle-to-vehicle dis-
tance control mode)
A

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4-5. Using the driving support systems
DrivingAfter the vehicle ahead of you starts
off, press the +/RES switch.
Your vehicle will also resume follow-up
cruising if the accelerator pedal is
depressed after the vehicle ahead of
you starts off.
1 Pressing the cancel switch cancels
the speed control.
The speed control is also canceled when
the brake pedal is depressed.
(When the vehicle has been stopped by
system control, depressing the brake pedal
does not cancel the setting.)
2 Pressing the +/RES switch resumes
the cruise control and returns vehi-
cle speed to the set speed.
However, when a vehicle ahead is not
detected, cruise control does not resume
when the vehicle speed is approximately
40 km/h (25 mph) or less.
When your vehicle is too close to a
vehicle ahead, and sufficient automatic
deceleration via the cruise control is
not possible, the display will flash and
the buzzer will sound to alert the driver.
An example of this would be if another
driver cuts in front of you while you are
following a vehicle. Depress the brake
pedal to ensure an appropriate vehi-
cle-to-vehicle distance.
Distance optionsVehicle-to-vehicle
distance
LongApproximately 50
m (160 ft.)
MediumApproximately 40
m (130 ft.)
ShortApproximately 30
m (100 ft.)
Resuming follow-up cruising
when the vehicle has been
stopped by system control (vehi-
cle-to-vehicle distance control
mode)
Canceling and resuming the
speed control
Approach warning (vehicle-to-
vehicle distance control mode)

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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
Driving
selected by using the paddle shift switch.
●Vehicle speed is at or above approxi-
mately 50 km/h (30 mph). However, when a preceding vehicle is detected, the dynamic radar cruise con-
trol with full-speed range can be set even if the vehicle speed is below approxi-mately 50 km/h (30 mph).
■Accelerating after setting the vehicle
speed
The vehicle can accelerate by operating the
accelerator pedal. After accelerating, the set speed resumes. Ho wever, during vehi- cle-to-vehicle distance control mode, the
vehicle speed may decrease below the set speed in order to maintain the distance to the preceding vehicle.
■When the vehicle stops while follow-up
cruising
●Pressing the +/RES switch while the vehi-
cle ahead stops will resume follow-up cruising if the vehicle ahead starts off within approximately 3 seconds after the
switch is pressed.
●If the vehicle ahead starts off within 3 sec-
onds after your vehicle stops, follow-up cruising will be resumed.
■Automatic cancelation of vehicle-to-
vehicle distance control mode
Vehicle-to-vehicle distance control mode is
automatically canceled in the following situ- ations.
●Actual vehicle speed falls below approxi-mately 40 km/h (25 mph) when there are no vehicles ahead.
●The preceding vehicle leaves the lane when your vehicle is following at a vehicle
speed below approximately 40 km/h (25 mph). Otherwise, the sensor can not properly detect the vehicle. (“CRUISE
NOT AVAILABLE No Preceding Vehi- cles” is displayed on the multi-information display.)
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned
off.
●When snow mode is set.
●The sensor cannot detect correctly
because it is covered in some way.
●Pre-collision brakin g is activated.
●The parking brake is operated.
●The vehicle is stopped by system control on a steep incline.
●The following are detected when the vehicle has been stopped by system con-trol:
• The driver is not wearing a seat belt. • The driver’s door is opened.• The vehicle has been stopped for about 3
minutes
If vehicle-to-vehicle distance control mode
is automatically canceled for any other rea-
son, there may be a malfunction in the sys-
tem. Contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliable
repairer.
■Automatic cancelation of constant speed control mode
Constant speed control mode is automati- cally canceled in the following situations:
●Actual vehicle speed is more than
approximately 16 km/h (10 mph) below the set vehicle speed.
●Actual vehicle speed falls 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.
●Pre-collision brakin g is activated.
If constant speed control mode is automati-
cally canceled for any other reason, there
may be a malfunction in the system. Con-
tact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
■If “Radar Cruise Control Unavailable” is
shown on the multi-information display
The radar cruise control system cannot be
used temporarily. Use the system when it

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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
●When the vehicle ahead of you deceler- ates suddenly
*:If equipped
■Meter display
Set speed
Indicators
■Operation switches
+/RES switch
Cruise control main switch
-/SET switch
Cancel switch
Cruise control*
Use the cruise control to maintain a
set speed without depressing the
accelerator pedal.
System components
A
B
A
B
C
D

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4-5. Using the driving support systems
1Press the cruise control main switch
to activate the cruise control.
Cruise control indicator will come on. Press the switch again to deactivate the
cruise control.
2 Accelerate or decelerate the vehi-
cle to the desired speed, 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.
To change the set speed, press the
+/RES or -/SET switch until the
desired set speed is obtained.
1 Increases the speed
2 Decreases the speed
Fine adjustment: Press the switch in the
desired direction.
Large adjustment: Press and hold switch.
The set speed will be increased or
decreased as follows:
Fine adjustment: By approximately 1 km/h
(0.6 mph) each time the switch is pressed.
Large adjustment: The set speed can be
increased or decreased continually until
the switch is released.
1 Pressing the cancel switch cancels
the constant speed control.
The speed setting is also canceled when
the brakes are applied.
2 Pressing the +/RES switch resumes
the constant speed control.
Setting the vehicle speed
Adjusting the set speed
Canceling and resuming the
constant speed control