2021 Lexus GX460 engine

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GX460_OM_OM60T19U_(U)4-2. Driving procedures
WARNING
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the accelerator
pedal while starting the engine under any circumstances.
Doing so may cause an accident resu
lting 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 complete stop. Activation of the steering lock in this cir-
cumstance may lead to an accident, re sulting in death or serious injury.
■Stopping the engine in an emergency
●If you want to stop the engine in an em ergency while driving the vehicle, press and
hold the engine switch for more than 2 seco nds, or press it briefly 3 times or more in
succession. ( P. 509)
However, do not touch the engine switch wh ile driving except in an emergency. Turn-
ing the engine off while drivin g will not cause loss of steering or braking control, 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.
●If the engine switch is operated while the vehicle is running, a warning message will be
shown on the multi-information display and a buzzer sounds.
●When restarting the engine after it was turn ed off while driving, shift the shift lever to
N and press the engine switch.
■When parking
Exhaust gases include harmfu l carbon monoxide (CO), which is colorless and odor-
less. Observe the fo llowing precautions.
Failure to do so may cause exhaust gases to enter the vehicle and may lead to an acci-
dent caused by light-headedness, or may le ad 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 ru nning 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.

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Driving
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If the indicator on the engine switch is illu minated, the engine switch is not off. When
exiting the vehicle, always check that the engine switch is off.
●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 discharge may occur.
■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 immediately.
■Symptoms indicating a malfun ction with the engine switch
If the engine switch seems to be operating somewhat differen tly than usual, such as the
switch sticking slightly, ther e may be a malfunction. Contact your Lexus dealer immedi-
ately.

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GX460_OM_OM60T19U_(U)4-2. Driving procedures
Automatic transmission
While the engine switch is in IGNITION 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
completely stopped.
*1: Shifting to the D position allows the system
to select a gear suitable for the driving
conditions. Setting the shift lever to the D position is recommended for normal driv-
ing.
*2: Selecting shift ranges using S mode rest ricts the upper limit of the possible gear
ranges, controls engine braking forces , and prevents unnecessary upshifting.
Shifting the shift lever
Shift position purpose
Shift positionPurpose and condition
PParking the vehicle/starting the engine
RReversing
NNeutral
(Condition in which the power is not transmitted)
DNormal driving*1
SS mode driving*2 (  P. 207)

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Driving
Use second start mode for accelerating and driving on slippery road surfaces
such as snow.
Press the button to use second start
mode.
The “2nd STRT” indicator will come on.
Press the button again to cancel second
start mode.
When the shift lever is in the S position, the shift lever can be operated as follows:
Upshifting
Downshifting
The selected shift range, from 1 to 6, will
be displayed in the meter.
The initial shift range in S mode is set
automatically to 5 or 4 according to
vehicle speed. However, the initial shift
range may be set to 3 or 2 if AI-SHIFT
has operated while the shift lever was in
the D position. ( P. 208)
■Shift ranges and their functions
●You can choose from 6 levels of engine braking force.
●A lower shift range will provide greate r engine braking force than a higher
shift range, and the engine speed will also increase.
Selecting the second start mode
Changing shift ranges in S mode
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2

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GX460_OM_OM60T19U_(U)4-2. Driving procedures
■Driving on a downhill
On declines, there may be case where the ve
hicle shifts down automatically to obtain
engine braking. As a result of the down shifting, the engine speed may increase.
■Second start mode automatic deactivation
Second start mode is automatically deactivated if the engine is turned off after driving in
second start mode.
■S mode
When the shift range is 5 or lower, holding the shift lever toward “+” sets the shift range to
6.
■AI-SHIFT
AI-SHIFT automatically shifts the gear to the suitable position according to driver perfor-
mance and driving conditions.
AI-SHIFT automatically operates when the shift lever is in the D position. (Shifting the
shift lever to the S position cancels the function.)
■When driving with dynamic radar cruise control activated
Even when performing the following actions with the intent of enabling engine braking,
engine braking will not activate because dy namic radar cruise control will not be can-
celed.
●While driving in S mode, downshifting to 5 or 4. ( P. 258)
●Vehicles with adaptive variable suspensi on system: When switching the driving mode
to sport mode while driving in D position. ( P. 343)
■Restraining sudden start (Drive-Start Control)
 P. 170
■Shift lock system
The shift lock system is a system to prevent ac cidental operation of the shift lever in start-
ing.
The shift lever can be shifted from P only when the engine switch is in the IGNITION ON
mode and the brake pedal is being depressed.

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Driving
■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 pedal, there may be a prob-
lem with the shift lock system. Have the vehicle inspected by your Lexus dealer, immedi-
ately.
The following steps may be used as an emergency measure to ensure that the shift lever
can be shifted.
Releasing the shift lock: Set the parking brake.
Turn the engine switch off.
Depress the brake pedal.
■If the “S” indicator does not come on ev en after shifting the shift lever to S
This may indicate a malfunction in the automatic transmission system. Have the vehicle
inspected by your Lexus dealer immediately.
(In this situation, the transmission will operat e in the same manner as when the shift lever
is in D.)
■Downshift restriction warning buzzer (S mode)
To help ensure safety and driving performance, downshifti ng operation may sometimes
be restricted. In some circum stances, downshifting may not be possible even when the
shift lever is operated. (A buzzer will sound twice.) Pry the cover up with
a flathead screwdriver
or tool.
To prevent damage to the cover, cover the tip
of the screwdriver with a rag.
Press the shift lock override button.
The shift lever can be shifted while the button
is pressed.
1
2
3
4
5

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GX460_OM_OM60T19U_(U)4-2. Driving procedures
WARNING
■When driving on slippery road surfaces
Do not accelerate or shift gears suddenly.
Sudden changes in engine braking may cause th
e vehicle to spin or skid, resulting in an
accident.
■To prevent an accident wh en releasing the shift lock
Before pressing the shift lock override butto n, make sure to set the parking brake and
depress the brake pedal.
If the accelerator pedal 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, possibly leading to an a ccident resulting in death or serious injury.

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GX460_OM_OM60T19U_(U)4-2. Driving procedures
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Driving
Turn signal lever
The turn signal lever can be used to show
the following intentions of the driver:
Right turn
Lane change to the right (move the
lever partway and then release it)
Lane change to the left (move the
lever partway and then release it)
Left turn
■Turn signals can be operated when
The engine switch is in IGNITION ON mode.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
■If the turn signals stop flashing befo re a lane change has been performed
Operate the lever again.
Operating instructions
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