cruise control LEXUS IS350 2022 Owners Manual

16Pictorial index
Driving position memory switches*...................................................................P.104
Outside rear view mirror switches ..................................................................... P.112
Door lock switches ...................................................................................................P.92
Power window switches ......................................................................................... P.114
Window lock switch ................................................................................................ P.115
Tire pressure warning reset switch....................................................................P.301
*:If equipped
Audio remote control switches
*
Paddle shift switches ......................................... ..................................................... P.136
Meter control switches ........................................................................................... P.76
Vehicle-to-vehicle distance switch .................................................................... P.191
Cruise control switch
Dynamic radar cruise control with full-speed range .......................................... P.187
LTA (Lane Tracing Assist) switch ....................................................................... P.175
Talk switch
*
Phone switches*
*
: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
A
B
C
D
E
F
A
B
C
D
E
F
G
H

662-1. Instrument cluster
switch is turned to IGNITION ON
mode to indicate that a system check is
being performed. They will turn off after
the engine is started, or after a few sec-
onds. There may be a malfunction in a
system if the lights do not come on, or
turn off. Have the vehicle inspected by
your Lexus dealer.
*2: This light illuminates on the multi-infor- mation display.
*3: This light illuminates on the center panel.
The indicators inform the driver of the
operating state of the vehicle’s various
systems.
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS warning light not come on
when you start the engine, this could
mean that these systems are not available
to help protect you in an accident, which
could result in death or serious injury.
Have the vehicle inspected by your
Lexus dealer immediately if this occurs.
Indicators
Turn signal indicator ( P.138)
(U.S.A.)
Headlight indicator (P.145)
(Canada)
Tail light indicator ( P.145)
Headlight high beam indicator
( P.146)
Automatic High Beam indicator
( P.147)
PCS warning light*1, 2 ( P.168)
Cruise control indicator
(  P.194)
Dynamic radar cruise control
indicator ( P.187)
Cruise control “SET” indicator
(  P.187)
(white)
LTA indicator ( P.180)
(green)
LTA indicator ( P.165, 180)
(orange)
(flashes)LTA indicator ( P.180)
BSM outside rear view mirror
indicators
*3, 4 (  P.197, 210)
BSM OFF indicator
*1, 2
(  P.197)
Intuitive parking assist OFF
indicator
*2(if equipped)
(  P.204)
RCTA OFF indicator
*1, 2
(  P.210)
PKSB OFF indicator
*1, 2 (if
equipped) ( P.217)
(flashes)
Slip indicator*1 ( P.230)
VSC OFF indicator
*1, 2
(  P.230)
Smart access system with
push-button start indicator
*5
(  P.130)
(U.S.A.)
Parking brake indicator
( P.139)

802-1. Instrument cluster
Acceleration G-force on the vehi-
cle
Current G-force value (analyzed
value of front/rear and left/right
G-forces)
Record of the maximum G-forces
This display is intended for use as a guide-
line. Depending on factors such as the road
surface condition, temperature and vehicle
speed, the display may not show the actual
condition of the vehicle.
Resetting the record of maximum
G-forces
Press and hold of the meter control
switch to reset the record.
Peak hold function
If lateral G-forces of 0.5 G or greater are
generated, the G-forc e value display will
turn amber and be held for 2 seconds.
*: For F SPORT models, this item is not available when the ma in meter is in the
center position.
■Gear Position
Displays the current shift range or gear
position when the shift position is in D
or M.
■Eco Driving Indicator
Eco Driving Indicator will not operate
under the followi ng conditions:
●The shift lever is in position other than D.
●A paddle shift swit ch is operated.
●Neither normal mode nor Eco drive
mode is selected. ( P.227)
●The vehicle speed is approximately 80
mph (130 km/h) or higher.
■G-force display
The G-force values may not be zero even
when the vehicle is parked, such as when it
is parked on an incline.
Select to display the following naviga-
tion system-linked information.
 Route guidance to destination
 Compass display (heading-up dis-
play)
Select to enable se lection of an audio
source or track on the meter using the
meter control switches.
Select to display the operational status
of the following systems:
 LTA (Lane Tracing Assist) ( P.175)
 Dynamic radar cruise control with
full-speed range ( P.187)
 RSA (Road Sign Assist) (if
equipped) ( P.184)
A
B
C
Navigation system-linked dis-
play (if equipped)
Audio system-linked display
Driving support system informa-
tion display

119
4
4
Driving
Driving
.4-1. Before drivingDriving the vehicle ..................... 120
Cargo and luggage ................... 126
Vehicle load limits ...................... 128
Trailer towing ............................... 128
Dinghy towing ............................. 129
4-2. Driving procedures Engine (ignition) switch ........... 130
Automatic transmission........... 134
Turn signal lever.......................... 138
Parking brake .............................. 139
Brake Hold.................................... 142
ASC (Active Sound Control) ......................................................... 144
4-3. Operating the lights and wipers Headlight switch ......................... 145
AHB (Automatic High Beam) ......................................................... 147
Windshield wipers and washer ......................................................... 150
4-4. Refueling Opening the fuel tank cap...... 157
4-5. Using the driving support sys- tems
Lexus Safety System + 2.5 ..... 160
PCS (Pre-Collision System) ......................................................... 165
LTA (Lane Tracing Assist)...... 175
RSA (Road Sign Assist) ........... 184Dynamic radar cruise control with
full-speed range....................... 187
BSM (Blind Spot Monitor) ..... 197
PKSA (Parking Support Alert) ........................................................ 201
Intuitive parking assist ............. 203
RCTA (Rear Cross Traffic Alert) function........................................ 210
PKSB (Parking Support Brake) ........................................................ 216
Parking Support Brake function (static objects) .......................... 222
Parking Support Brake function (rear-crossing vehicles) ...... 225
Driving mode select switch ... 227
Driving assist systems.............. 229
4-6. Driving tips Winter driving tips .................... 234

1344-2. Driving procedures
*1: To improve fuel efficiency and reduce noise, shift the shift lever to D for normal
driving.
*2: Any gear range can be fixed when driv- ing in M mode.
■To protect the automatic transmission
“High Transmission Fluid Temp See
Owner's Manual” is displayed on the
multi-information display and a function is
adopted that automatically selects a higher
shift range when the fluid temperature is
high. Have the vehicle inspected by your
Lexus dealer.
■When driving with dynamic radar cruise
control with full-speed range activated
Even when performing the following
actions with the intent of enabling engine
braking, engine braking will not activate
because dynamic radar cruise control with
full-speed range will not be canceled.
●8-speed models: While driving in the D
position, downshifting to 7, 6, 5 or 4.
(P.187)
●6-speed models: While driving in the D
position, downshifting to 5 or 4. ( P.187)
●When switching the driving mode to sport mode while driving in the D position
(
P.227)
■Restraining sudden start (Drive-Start
Control)
P.125
■Gear position display on the multi-infor-
mation display
When Gear positions is selected for a Drive
Information screen on the multi-information
display and the shift lever is in the D or M
position, the currently selected gear posi-
tion will be displayed on the multi-informa-
tion display. (The display changes
according to the shift lever position and
driving conditions.)
■AI-SHIFT
The AI-SHIFT automatically selects the suit-
able gear according to driver performance
and driving conditions.
The AI-SHIFT automatically operates when
the shift lever is in D position. (Shifting the
shift lever to the M position cancels the
function.)
Automatic transmission
Shift position purpose and func-
tions
Shift posi-
tionObjective or function
PParking the vehicle/starting the engine
RReversing
NNeutral (Condition in which
the power is not transmitted)
DNormal driving*1
MM mode driving*2 (  P.137)
WARNING
■When driving on slippery road sur-
faces
Be careful of downsh ifting and sudden
acceleration, as this could result in the
vehicle skidding to the side or spinning.

1604-5. Using the driving support systems
4-5.Using the driving support systems
■PCS (Pre-Collision System)
 P.165
■LTA (Lane Tracing Assist)
 P.175
■AHB (Automatic High Beam)
 P.147
■RSA (Road Sign Assist)*
P.184
*:If equipped
■Dynamic radar cruise control with
full-speed range
 P.187 Two types of sensors, located behind
the front grille and windshield, detect
information necessary to operate the
drive assist systems.
Radar sensor
Front camera
Lexus Safety System + 2.5
The Lexus Safety System + 2.5 con-
sists of the following drive assist sys-
tems and contributes to a safe and
comfortable driving experience:
Driving assist system
WARNING
■Lexus Safety System + 2.5
The Lexus Safety System + 2.5 is
designed to operate under the assump-
tion that the driver wi ll drive safely, and is
designed to help reduce the impact to
the occupants and the vehicle in the case
of a collision or assist the driver in normal
driving conditions.
As there is a limit to the degree of recog-
nition accuracy and control performance
that this system can provide, do not
overly rely on this system. The driver is
always responsible for paying attention
to the vehicle’s surro undings and driving
safely.
Sensors
WARNING
■To avoid malfunction of the radar sen-
sor
Observe the following precautions.
Otherwise, the radar sensor may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
A
B

1754-5. Using the driving support systems
4
Driving
●The PCS warning light will turn on and
“VSC Turned OFF Pre-Collision Brake
System Unavailable” will be displayed on
the multi-information display.LTA (Lane Tracing Assist)
While driving on a road with clear
white (yellow) lane lines, the LTA
system warns the driver if the vehi-
cle may deviate from the current
lane or course
*, and also can
slightly operate the steering wheel
to help avoid deviation from the
lane or course
*. Also, while the
dynamic radar cruise control with
full-speed range ( P.187) is oper-
ating, this system will operate the
steering wheel to maintain the vehi-
cle’s lane position.
The LTA system recognizes white
(yellow) lane lines or a course
*
using the front camera. Addition-
ally, it detects preceding vehicles
using the front camera and radar.
*: Boundary between asphalt and the side of the road, such as grass, soil, or
a curb

1794-5. Using the driving support systems
4
Driving
■Steering assist function
When the system determines that the
vehicle might depart from its lane or
course
*, the system provides assis-
tance as necessary by operating the
steering wheel in small amounts for a
short period of time to keep the vehicle
in its lane.
When the system determines that the vehi-
cle might depart from its lane and that the
possibility of a collision with an overtaking
vehicle in the adjacent lane is high, the
steering assist function will operate even if
the turn signals are operating.
*: Boundary between asphalt and the side of the road, such as grass, soil, or a curb
■Vehicle sway warning function
When the vehicle is swaying within a
lane, the warning buzzer will sound and
a message will be displayed on the
multi-information display to alert the
driver.
■Lane centering function
This function is linked with dynamic
radar cruise control with full-speed
range and provides the required assis-
tance by operating the steering wheel
to keep the vehicle in its current lane.
When dynamic radar cruise control with
full-speed range is not operating, the lane
centering function does not operate.
In situations where the white (yellow) lane
lines are difficult to see or are not visible,
such as when in a traffic jam, this function
will operate to help follow a preceding
vehicle by monitoring the position of the
preceding vehicle.

1824-5. Using the driving support systems
Always pay careful attention to your
surroundings and operate the steering
wheel as necessary to correct the path of
the vehicle and ensure safety.
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Vehicle speed is approximately 32 mph
(50 km/h) or more.
*1
• System recognizes white (yellow) lane
lines or a course*2. (When a white [yel-
low] line or course*2 is recognized on
only one side, the system will operate
only for the recognized side.)
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated. (Except when another vehicle is in the lane on the
side where the turn signal was operated)
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected.
(P.184)
*1: The function operates even if the vehi-
cle speed is less than approximately 32
mph (50 km/h) when the lane center-
ing function is operating.
*2: Boundary between asphalt and the side of the road, such as grass, soil, or a curb
●Steering assist function
This function operates when all of the fol-
lowing conditions are me t in addition to the
operation conditions for the lane depar-
ture alert function.
• Vehicle is not accelerated or decelerated
by a fixed amount or more.
• Steering wheel is not operated with a
steering force level suitable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not displayed. ( P.183)
●Vehicle sway warning function This function operates
when all of the fol-
lowing conditions are met.
• Setting for “Warning” in of the
multi-information disp lay is set to “On”.
( P.75)
• Vehicle speed is ap proximately 32 mph
(50 km/h) or more.
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• No system malfunctions are detected.
(P.184)
●Lane centering function
This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Setting for “Lane Center” in of the
multi-information display are set to “On”.
(P.75)
• This function recognizes white (yellow) lane lines or the position of a preceding
vehicle (except when the preceding vehi-
cle is small, such as a motorcycle).
• The dynamic radar cruise control with full-speed range is operating in vehi-
cle-to-vehicle distance control mode.
• Width of traffic lane is approximately 10 to 13 ft. (3 to 4 m).
•Turn signal lever is not operated.
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. (P.184)
• Vehicle does not accelerate or
decelerate by a fixed amount or more.
• Steering wheel is not operated with a steering force level su itable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper- ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. ( P.183)
• The vehicle is being driven in the center
of a lane.
• Steering assist function is not operating.
■Temporary cancelation of functions
●When operation condit ions are no longer
met, a function may be temporarily
canceled. However, when the operation
conditions are met again, operation of the
function is automatically restored.

1874-5. Using the driving support systems
4
Driving
Vehicle-to-vehicle distance switch
Multi-information display
Set speed
IndicatorsCruise control switch
Dynamic radar cruise con-
trol with full-speed range
In vehicle-to-vehicle distance con-
trol mode, the vehicle automati-
cally accelerates, decelerates and
stops to match the speed changes
of the preceding vehicle even if the
accelerator pedal is not depressed.
In constant speed control mode,
the vehicle runs at a fixed speed.
Use the dynamic radar cruise con-
trol with full-speed range on free-
ways and highways.

Vehicle-to-vehicle distance con-
trol mode ( P.189)
 Constant speed control mode
( P.194)
System Components
A
B
C
D
WARNING
■Before using dynamic radar cruise
control with full-speed range
●Driving safely is th e sole responsibility
of the driver. Do not rely solely on the
system, and drive safely by always pay-
ing careful attention to your
surroundings.
●The dynamic radar cruise control with
full-speed range provides driving
assistance to reduce the driver’s bur-
den. However, there are limitations to
the assistance provided.
Read the following conditions care-
fully. Do not overly rely on this system
and always drive carefully.
• When the sensor ma y not be correctly
detecting the vehicle ahead:
P.195
• Conditions under which the vehi- cle-to-vehicle distance control mode
may not function correctly:
P.196
●Set the speed appropriately depend-
ing on the speed limit, traffic flow, road
conditions, weather conditions, etc.
The driver is responsible for checking
the set speed.
●Even when the system is functioning
normally, the condition of the preced-
ing vehicle as detected by the system
may differ from the condition
observed by the driver. Therefore, the
driver must always remain alert, assess
the danger of each situation and drive
safely. Relying solely on this system or
assuming the system ensures safety
while driving can lead to an accident,
resulting in death or serious injury.
●Switch the dynamic radar cruise con-
trol with full-speed range setting to off,
using the “ON/OFF” button when not
in use.
E