2022 LEXUS IS350 engine

1304-2. Driving procedures
4-2.Driving procedures
1Check that the parking brake is set.
2 Check that the shift lever is in P.
3 Firmly depress the brake pedal.
and a message will be displayed on
the multi-information display.
If it is not displayed, the engine cannot be
started.
4 Press the engine switch shortly and
firmly.
When operating the engine switch, one
short, firm press is enough. It is not neces-
sary to press and hold the switch.
The engine will crank until it starts or for up
to 30 seconds, whichever is less.
Continue depressing the brake pedal until
the engine is completely started.
The engine can be started from any engine
switch mode.
■If the engine does not start
●Check that the shift lever is securely set in
P. The engine may not start if the shift lever is displaced out of P.
●The engine immobilizer system may not
have been deactivated. (
P.60)
Contact your Lexus dealer.
■Electronic key battery depletion
P.86
■Conditions affecting operation
P.98
■Notes for the entry function
P.99
■Steering lock function
●After turning the engine switch off and
opening and closing th e doors, the steer-
ing wheel will be lock ed due to the steer-
ing lock function. Operating the engine
switch again automatically cancels the
steering lock.
●When the steering lock cannot be
released, “Push Engine Switch while
Turning Steering Whee l in Either Direc-
tion” will be displayed on the multi-infor-
mation display.
Check that the shift lever is in P. Press the
engine switch while turning the steering
wheel left and right.
●To prevent the steering lock motor from
overheating, operation of the motor may
be suspended if the en gine is turned on
and off repeatedly in a short period of
time. In this case, re frain from operating
the engine switch. After about 10 sec-
onds, the steering lock motor will resume
functioning.
■When “Access System with Elec. Key
Malfunction See Owner's Manual” is
displayed on the multi-information dis-
play
The system may be malfunctioning. Have
the vehicle inspected by your Lexus dealer
Engine (ignition) switch
Performing the following opera-
tions when carryin g the electronic
key on your person starts the
engine or changes engine switch
modes.
Starting the engine

1314-2. Driving procedures
4
Driving
immediately.
■If the electronic key battery is depleted
P.308
■Operation of the engine switch
●If the switch is not pressed shortly and
firmly, the engine switch mode may not
change or the engine may not start.
●If attempting to restart the engine imme-
diately after turning the engine switch off,
the engine may not start in some cases.
After turning the engine switch off, please
wait a few seconds before restarting the
engine.
■If the smart access system with
push-button start has been deactivated
by a customized setting
P.351
1 Stop the vehicle.
2 Set the parking brake ( P.139),
and shift the shift lever to P.
3 Press the engine switch.
4 Release the brake pedal and check
that the display on the meters is off.
■Automatic engine shut off feature
●The vehicle is equipped with a feature
that automatically shuts off the engine
when the shift lever is in P with the engine
running for an extended period.
●The engine will automatically shut off
after approximately 1 hour if it has been
left running while the shift lever is in P.
●The timer for the automatic engine shut
off feature will reset if the brake pedal is
depressed or if the shift lever is in a posi-
tion other than P.
●After the vehicle is parked, if the door is
locked with the door lock switch ( P.92)
from the inside or the mechanical key
from the outside, the automatic engine
shut off feature will be disabled. The timer
for the automatic engine shut off feature
will be re-enabled if the driver’s door is
opened.
WARNING
■When starting the engine
Always start the engi ne while sitting in
the driver’s seat. Do not depress the
accelerator pedal wh ile starting the
engine under any circumstances.
Doing so may cause an accident result-
ing in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle
is moving, do not lock or open the doors
until the vehicle reaches a safe and com-
plete stop. Activation of the steering lock
in this circumstance may lead to an acci-
dent, resulting in death or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start
or stalls frequently, have your vehicle
checked by your Lexus dealer immedi-
ately.
■Symptoms indicating a malfunction
with the engine switch
If the engine switch seems to be operat-
ing somewhat differently than usual, such
as the switch sticking slightly, there may
be a malfunction. Contact your Lexus
dealer immediately.
Stopping the engine

1324-2. Driving procedures
Modes can be changed by pressing
the engine switch with brake pedal released. (The mode changes each
time the switch is pressed.)
1
Off
*
The emergency flashers can be used.
The multi-information display will not be
displayed.
2ACCESSORY mode
Some electrical components such as the
audio system can be used.
“ACCESSORY” will be displayed on the
meters.
3IGNITION ON mode
All electrical components can be used.
“IGNITION ON” will be displayed on the
meters.
*: If the shift lever is in a position other than
P when turning off the engine, the
engine switch will be turned to ACCES-
SORY mode, not to off.
■Auto power off function
If the vehicle is left in ACCESSORY mode
for more than 20 minutes or IGNITION
ON mode (with the engine not running) for
WARNING
■Stopping the engine in an emergency
If you want to stop the engine in an emer-
gency while driving the vehicle, press
and hold the engine switch for more than
2 seconds, or press it briefly 3 times or
more in succession. ( P.320)
However, do not touch the engine switch
while driving except in an emergency.
Turning the engine off while driving will
not cause loss of steering or braking con-
trol, but the power assist to these systems
will be lost. This will make it more difficult
to steer and brake, so you should pull
over and stop the vehicle as soon as it is
safe to do so.
■When parking
Exhaust gases include harmful carbon
monoxide (CO), which is colorless and
odorless. Observe the following precau-
tions.
Failure to do so may cause exhaust gases
to enter the vehicle and may lead to an
accident caused by light-headedness, or
may lead to death or a serious health
hazard.
●If the vehicle is in a poorly ventilated
area or a closed area, such as a
garage, stop the engine.
●Do not leave the vehicle with the
engine running for a long time. If such
a situation cannot be avoided, park the
vehicle in an open space and ensure
that exhaust fumes do not enter the
vehicle interior.
●Do not leave the engine running in an
area with snow build-up, or where it is
snowing. If snowbanks build up around
the vehicle while the engine is running,
exhaust gases may collect and enter
the vehicle.
Changing engine switch modes

1334-2. Driving procedures
4
Driving
more than an hour with the shift lever in P,
the engine switch will automatically turn off.
However, this function cannot entirely pre-
vent battery discharge. Do not leave the
vehicle with the engine switch in ACCES-
SORY or IGNITION ON mode for long
periods of time when the engine is not run-
ning.
If the engine is stopped with the shift
lever in a position other than P, the
engine switch will not be turned off but
instead be turned to ACCESSORY
mode. Perform the following proce-
dure to turn the switch off:
1Check that the parking brake is set.
2 Shift the shift lever to P.
3 Check that “Turn Power Off” is dis-
played on the multi-information dis-
play and then press the engine
switch once.
4 Check that “Turn Power Off” on the
multi-information display is off.
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in
ACCESSORY or IGNITION ON
mode for long period s of time without
the engine running.
●If “ACCESSORY” or “IGNITION
ON” is displayed on the meters while
the engine is not running, the engine
switch is not off. Exit the vehicle after
turning the engine switch off.
When stopping the engine with
the shift lever in a position other
than P
NOTICE
■To prevent battery discharge
Do not stop the engine when the shift
lever is in a position other than P. If the
engine is stopped in another shift lever
position, the engine switch will not be
turned off but instead be turned to
ACCESSORY mode. If the vehicle is left
in ACCESSORY mode, battery dis-
charge may occur.

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.

1354-2. Driving procedures
4
Driving
While the engine switch is in IGNI-
TION ON mode, move the shift lever
with the brake pedal depressed.
When shifting the shift lever between P
and D, make sure that the vehicle is com-
pletely stopped.
■Shift lock system
The shift lock system is a system to prevent
accidental operation of the shift lever in
starting.
The shift lever can be shifted from P only
when the engine switch is in IGNITION
ON mode and the brake pedal is being
depressed.
■If the shift lever cannot be shifted from P
First, check whether the brake pedal is
being depressed.
If the shift lever cannot be shifted with your
foot on the brake pe dal, there may be a
problem with the shift lock system. Have the
vehicle inspected by your Lexus dealer
immediately.
The following steps ma y be used as an emergency measure to ensure that the shift
lever can be shifted.
Releasing the shift lock:
1
Set the parking brake. ( P.141)
2 Turn the engine switch to off.
3 Depress the brake pedal.
4 Pry the cover up with a flathead screw-
driver or equivalent tool.
To prevent damage to the cover, cover the
tip of the screwdriver with a rag.
5 Press the shift lock override button.
The shift lever can be shifted while the but-
ton is pressed.
Shifting the shift lever
WARNING
■To prevent an accident when releas-
ing the shift lock
Before pressing the shift lock override
button, make sure to set the parking
brake and depress the brake pedal.
If the accelerator pe dal is accidentally
depressed instead of the brake pedal
when the shift lock override button is
pressed and the shift lever is shifted out
of P, the vehicle may suddenly start, pos-
sibly leading to an accident resulting in
death or serious injury.

1364-2. Driving procedures
■Driving mode
 P.227
■Snow mode
Snow mode can be selected to suit the
conditions when driving on slippery
road surfaces, such as snow.
Press the switch.
Press the switch again to return to normal
mode.
■Snow mode automatic deactivation
Snow mode is automatically deactivated if
the engine switch is turned off after driving
in snow mode.
To drive using temporary shift range
selection, operate the “-” or “+” paddle
shift switch.
When the “-” paddle shift switch is
operated, the shift range will be
downshifted to a range that enables
engine braking force that is suitable to
driving conditions.
When the “+” paddle shift switch is
operated, the shift range will be one
gear higher than the gear in use during normal D position driving.
Changing the shift range allows
restriction of the highest gear, prevent-
ing unnecessary upshifting and
enabling the level of engine braking
force to be selected.
Except F SPORT models
F SPORT models
1 Upshifting
2 Downshifting
8-speed models: The se lected shift range,
from D1 to D8, will be displayed on the
multi-information display.
6-speed models: The se lected shift range,
from D1 to D6, will be displayed on the
multi-information display.
To return to normal D position driving, the
“+” paddle shift switch must be held down
for a period of time.
■Shift ranges and their functions
Selecting the driving mode
Selecting shift ranges in the D
position
Meter dis- playFunction
D2 - D8
(8-speed models)A gear in the range between 1 and the selected gear is automatically chosen
depending on vehicle speed and driving conditions
D2 - D6
(6-speed models)
D11st gear is set
A
B

1374-2. Driving procedures
4
Driving
A lower shift range will provide greater
engine braking forces than a higher shift
range.
■Automatic deactivation of shift range
selection in the D position
Shift range selection in the D position will
be deactivated in the following situations:
●When the vehicle comes to a stop
●If the accelerator pedal is depressed for
more than a certain period of time
●When the shift lever is shifted to a posi-
tion other than D
■Downshifting restriction warning
buzzer
To help ensure safety and driving perfor-
mance, downshifting operation may some-
times be restricted. In some circumstances,
downshifting may not be possible even
when the paddle shift switch is operated. (A
buzzer will sound twice.)
To enter M mode, shift the shift lever to
M. Gears can then be selected by
operating the shift lever or paddle shift
switches, allowing you to drive in the
gear of your choice. Except F SPORT models
F SPORT models
1 Upshifting
2 DownshiftingThe gear changes once every time the shift
lever or paddle shift switch is operated.
8-speed models: The selected gear, from
M1 to M8, will be fi xed and displayed on
the multi-information display.
6-speed models: The selected gear, from
M1 to M6, will be fixed and displayed on
the multi-information display.
When in the M position, the gear will
not change unless the shift lever or
paddle shift switches are operated.
However, even when in the M position,
the gears will be automatically
changed in the following situation:
 When vehicle speed drops
(downshift only).
 When the automatic transmission
fluid or engine coolant temperature
Selecting gears in the M position
A
B