2021 LEXUS IS300 change time

1944-5. Using the driving support systems
This mode employs a radar to detect the presence of vehicles up to approximately
328 ft. (100 m) ahead, determines the cu rrent vehicle-to-vehicle following dis-
tance, and operates to maintain a suitab le following distance from the vehicle
ahead. The desired vehicle-to-vehicle distance can also be set by operating the
vehicle-to-vehicle distance switch.
When driving on downhill slopes, the vehicl e-to-vehicle distance may become shorter.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver.
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 vehicle speed is necessary, the system applies
the brakes (the stop lights will come on at this 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 th e 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, pushing the cruise control lever up or
depressing the accelerator pedal (start-off operation) will resume follow-up cruising. If the
start-off operation is not performed, system control continues to keep your vehicle
stopped.
When the turn signal lever is operated and yo ur vehicle moves to an overtaking lane while
driving at 50 mph (80 km/h) or more, the vehicle will accelerate to help to overtake a
passing vehicle.
The system’s identification of what is an over taking lane may be determined solely based on
Driving in vehicle-to-vehicle distance control mode
A
B

1964-5. Using the driving support systems
1Increases the speed (Except when
the vehicle has been stopped by
system control in vehicle-to-vehi-
cle distance control mode)
2 Decreases the speed
Fine adjustment: Momentarily move the
lever in the de sired direction.
Large adjustment: Hold the lever up or
down 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 the U.S. mainland, Hawaii
Fine adjustment: By 1 mph (1.6 km/h)*1 or 1
km/h (0.6 mph)
*2 each time the lever is
operated
Large adjustment: Increases or decreases
in 1 mph (1.6 km/h)
*1 or 1 km/h (0.6 mph)*2
increments for as long as the lever is held
For Canada, Guam and Puerto Rico
Fine adjustment: By 1 mph (1.6 km/h)*1 or 1
km/h (0.6 mph)
*2 each time the lever is
operated
Large adjustment: Increases or decreases
in 5 mph (8 km/h)
*1 or 5 km/h (3.1 mph)*2
increments for as long as the lever is held
In the constant speed control mode
(  P.199), the set speed will be
increased or decreased as follows:
Fine adjustment: By 1 mph (1.6 km/h)*1 or 1
km/h (0.6 mph)
*2 each time the lever is
operated
Large adjustment: The speed will continue
to change while the lever is held.
*1: When the set speed is shown in “MPH”
*2: When the set speed is shown in “km/h”
 Increasing the set speed by the
accelerator pedal
1 Accelerate with accelerator pedal
operation to the desired vehicle
speed
2 Push the lever down
Pressing the switch changes the vehi-
cle-to-vehicle distance as follows:
1 Long
2 Medium
3 Short
If a vehicle is running ahead of you, the pre-
ceding vehicle mark will also be dis-
played.
Changing the vehicle-to-vehicle
distance (vehicle-to-vehicle dis-
tance control mode)
A

2004-5. Using the driving support systems
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is
turned off.
●The sensor cannot detect correctly
because it is covered in some way.
●When the brake control or output restric-
tion control of a driving support system
operates.
(For example: Pre-Collision System,
Drive-Start Control)
●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 reasons
other than the above, there may be a mal-
function in the system . Contact your Lexus
dealer.
■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 10 mph (16 km/h) below
the set vehicle speed.
●Actual vehicle speed falls below approxi-
mately 20 mph (30 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is
turned off.
●When the brake control or output restric-
tion control of a driving support system
operates.
(For example: Pre-Collision System,
Drive-Start Control)
●The parking brake is operated.
If constant speed cont rol mode is automati-
cally canceled for any reasons other than the above, there may be a malfunction in the
system. Contact your Lexus dealer.
■Situations in which the curve speed
reduction function may not operate
In situations such as the following, the curve
speed reduction function may not operate:
●When the vehicle is being driven around
a gentle curve
●When the accelerato r pedal is being
depressed
●When the vehicle is being driven around
an extremely short curve
■Brake operation
A brake operation sound may be heard and
the brake pedal response may change, but
these are not malfunctions.
■Warning messages and buzzers for
dynamic radar cruise control with
full-speed range
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution while driv-
ing. If a warning messa ge is shown on the
multi-information displa y, read the message
and follow the instructions. ( P.168, 346)
■When the sensor may not be correctly
detecting the vehicle ahead
In the case of the fo llowing 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.197) 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.)

2054-5. Using the driving support systems
4
Driving
Use the meter control switches to turn
on/off the function.
1Press or to select .
2 Press or to select and
then press .
When the BSM function is disabled, the
BSM OFF indicator ( P.68) illuminates
on the multi-informat ion display. (Each
time the engine switch is turned off then
changed to IGNITION ON mode, the
BSM function will be enabled automati-
cally.)
WARNING
●Keep the sensors and the surrounding
areas on the rear bumper clean at all
times.
If a sensor or its su rrounding area on the
rear bumper is dirty or covered with
snow, the Blind Spot Monitor may not
operate and a warning message
(  P.202) will be displayed. In this situa-
tion, clear off the dirt or snow and drive
the vehicle with the operation conditions
of the BSM function ( P.207) satisfied
for approximately 10 minutes. If the
warning message does not disappear,
have the vehicle inspected by your Lexus
dealer.
●Do not attach stickers to the sensor or
surrounding area on the rear bumper.
●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 your Lexus
dealer.
• 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 disassemb le the sensor.
●Do not modify the sensor or surround-
ing area on the rear bumper.
●If a sensor or the rear bumper needs to
be removed/installed or replaced,
contact your Lexus dealer.
●Do not paint the rear bumper any
color other than an official Lexus color.
Turning the Blind Spot Monitor
on/off

2094-5. Using the driving support systems
4
Driving
■Adjusting the buzzer volume
The buzzer volume can be adjusted on
the multi-information display. The vol-
ume of buzzers for the intuitive parking
assist and RCTA function will be
adjusted simultaneously.
Use the meter control switches to
change settings. ( P.77)
Vehicles without the Intuitive park-
ing assist
1 Press or to select .
2 Press or to select “RCTA”
and then press .
3 Press or to select and
then press .
Each time the switch is pressed, the volume
level will change between 1, 2, and 3.
Vehicles with the Intuitive parking
assist
1 Press or to select .
2 Press or to select “PKSA”
and then press .
3 Press or to select and
then press .
Each time the switch is pressed, the volume
level will change between 1, 2, and 3.
■Muting a buzzer temporarily
Vehicles without the Intuitive park-
ing assist
A mute button will be displayed on the
multi-information display when an
object is detected. To mute the buzzer, press .
Mute will be canceled automatically in
the following situations:

When the shift lever is changed.
 When the vehicle speed exceeds a
certain speed.
 When the operating function is tem-
porarily canceled.
 When the operating function is dis-
abled manually.
 When the engine switch is turned
off.
Vehicles with the Intuitive parking
assist
A mute button will be displayed on the
multi-information display when an
object is detected. To mute the buzzer,
press .
The buzzers for the intuitive parking
assist and RCTA function will be muted
simultaneously.
Mute will be canceled automatically in
the following situations:
 When the shift lever is changed.
 When the vehicle speed exceeds a
certain speed.
 When there is malf unction in a sen-
sor or the system is temporarily
unavailable.
 When the operating function is dis-
abled manually.
 When the engine switch is turned
off.
Setting the buzzer volume

2164-5. Using the driving support systems
*:If equipped
Meter control switches
The RCTA function can be turned on/off.
When the RCTA function is disabled, the
RCTA OFF indicator illuminates.
Outside rear view mirror indicators
When a vehicle approaching from the right
or left at the rear of the vehicle is detected,
both outside rear view mirror indicators
will flash.
Center Display
If a vehicle approaching from the right or
left at the rear of the vehicle is detected,
the RCTA icon ( P.218) for th e detected
side will be displayed on the Center Dis-
play. This illustration shows an example of a
vehicle approaching from both sides of the
vehicle.
RCTA buzzer
If a vehicle approaching from the right or
left at the rear of th e vehicle is detected, a
buzzer will sound. The buzzer also sounds
for approximately 1 second immediately
after the RCTA function is turned on.
Use the meter control switches to
enable/disable the RCTA function.
( P.77)
Vehicles without the Intuitive park-
ing assist
1 Press or to select .
2 Press or to select “RCTA”
and then press .
Each time the engine switch is turned off
then changed to ON, the RCTA function
will be enabled automatically.
Vehicles with the Intuitive parking
assist
1 Press or to select .
2 Press or to select “PKSA”
and then press .
3 Press or to select “RCTA”
and then press .
RCTA (Rear Cross Traffic
Alert) function*
The RCTA function uses the BSM
rear side radar sensors installed on
the inner side of the rear bumper.
This function is intended to assist
the driver in checking areas that
are not easily visible when backing
up.
System components
A
B
Turning the RCTA function
on/off
C
D

2174-5. Using the driving support systems
4
Driving
Each time the engine switch is turned off
then changed to ON, the RCTA function
will be enabled automatically.■Outside rear view mirror indicator visi-
bility
In strong sunlight, the outside rear view mir-
ror indicator may be difficult to see.
■Hearing the RCTA buzzer
The RCTA buzzer may be difficult to hear
over loud noises, such as if the audio system
volume is high.
■When “Rear Cross Traffic Alert
Unavailable” is shown on the
multi-information display
Water, ice, snow, mud, etc., may be attached
to the rear bumper around the sensors.
(  P.204) Removing the water, ice, snow,
mud, etc., from the attached to the rear
bumper around the sensors to return the
function to normal.
Additionally, the function may not operate
normally when driving in extremely hot or
cold environments.
■Rear side radar sensors
 P.204
■Operation of the RCTA function
The RCTA function uses rear side 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 indi cators and sounding a
buzzer.
Approaching vehicles
WARNING
■Cautions regarding the use of the
function
The driver is solely responsible for safe
driving. Always driv e 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 reli ance on this func-
tion may lead to an accident resulting
death or serious injury.
NOTICE
■Before using the RCTA function
Do not place objects near the sensors.
RCTA function
A

2214-5. Using the driving support systems
4
Driving
*:If equipped
■Parking Support Brake function
(static objects)
 P.226
■Parking Support Brake function
(rear-crossing vehicles)
 P.232 The Parking Support Brake can be
enabled/disabled on the multi-informa-
tion display. All of the Parking Support
Brake functions (static objects and
rear-crossing vehicles) are
enabled/disabled simultaneously.
Use the meter control switches to
enable/disable the parking support
brake. (
P.77)
1 Press or to select .
PKSB (Parking Support
Brake)*
The Parking Support Brake system
consists of the following functions
that operate when driving at a low
speed or backing up, such as when
parking. When the system deter-
mines that the possibility of a colli-
sion with a detected object is high, a
warning operates to urge the driver
to take evasive action. If the system
determines that the possibility of a
collision with a detected object is
extremely high, the brakes are
automatically applied to help avoid
the collision or help reduce the
impact of the collision.
PKSB (Parking Support Brake)
system
WARNING
■Limitations of the Parking Support
Brake system
Do not overly rely on the system, as
doing so may lead to an accident.
●The driver is solely responsible for safe
driving. Always drive carefully, taking
care to observe your surroundings.
The Parking Support Brake system is
designed to provide support to lessen
the severity of collisions. However, it
may not operate in some situations.
●The Parking Support Brake system is
not designed to stop the vehicle com-
pletely. Additionally, even if the system
has stopped the vehicl e, it is necessary
to depress the brake pedal immedi-
ately as brake control will be canceled
after approximately 2 seconds.
NOTICE
■If “Parking Support Brake Unavail-
able” is displayed on the multi-infor-
mation display and the PKSB OFF
indicator is flashing
If this message is displayed immediately
after the engine swit ch is changed to
IGNITION ON mode, operate the vehi-
cle carefully, paying attention to your sur-
roundings. It may be necessary to drive
the vehicle for a certain amount of time
before the system returns to normal. (If
the system is not return to normal after
driving for a while, clean the sensors and
their surrounding area on the bumpers.)
Enabling/Disabling the Parking
Support Brake