engine Lexus GX460 2017 Repair Manual

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GX 460 _O M_ OM6 0F 6 8U _(U )4-2. Driving procedures
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if the
engine is turned on and off repeatedly in a short period of time. In this case, refrain from
running the engine. After about 10 seconds, the steering lock motor will resume func-
tioning.
■When the engine switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer,
immediately.
■If the electronic key battery is depleted
→
P. 4 9 2
■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 immediately 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 in a customized
setting
→ P. 5 5 8
The green indicator light
on the engine switch
will flash and a message will be shown on the
multi-information display. Press the engine
switch again while turning the steering wheel
left and right.
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GX 460 _O M_ OM6 0F 6 8U _(U )
1934-2. Driving procedures
4
Driving
CAUTION
■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 resulting 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, resulting in death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, press and hold
the engine switch for more than 2 seconds, or press it briefly 3 times or more in succes-
sion. ( →P. 511)
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 control, but the
power assist to these systems will be lost. Th is 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.
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 illuminated, 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 malfunction with the engine switch
If the engine switch seems to be operating somewhat differently than usual, such as the
switch sticking slightly, there may be a malf unction. Contact your Lexus dealer immedi-
ately.
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GX 460 _O M_ OM6 0F 6 8U _(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 restricts 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. 1 9 6 )
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GX 460 _O M_ OM6 0F 6 8U _(U )4-2. Driving procedures
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. 1 9 7 )
■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.
Changing shift ranges in S mode
1
2
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GX 460 _O M_ OM6 0F 6 8U _(U )
1974-2. Driving procedures
4
Driving
■Driving on a downhill
On declines, there may be case where the vehicle shifts down automatically to obtain
engine braking. As a result of the downshifting, 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 shif t lever is in the D position. (Shifting the
shift lever to the S position cancels the function.)
■When driving with the cruise control or dynamic radar cruise control
Engine braking will not occur in S mode, even when downshifting to 5 or 4.
( → P. 224, 227)
■Shift lock system
The shift lock system is a system to prevent accidental 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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GX 460 _O M_ OM6 0F 6 8U _(U )4-2. Driving procedures
■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 even 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 operate in the same manner as when the shift lever
is in D.)
■Downshift restriction warning buzzer (S mode)
To help ensure safety and driving performa nce, downshifting operation may sometimes
be restricted. In some circumstances, downsh ifting 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.
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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GX 460 _O M_ OM6 0F 6 8U _(U )
1994-2. Driving procedures
4
Driving
CAUTION
■When driving on slippery road surfaces
Do not accelerate or shift gears suddenly.
Sudden changes in engine braking may cause the vehicle to spin or skid, resulting in an
accident.
■To prevent an accident when releasing 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 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 acc ident resulting in death or serious injury.
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GX 460 _O M_ OM6 0F 6 8U _(U )4-2. Driving procedures
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 (push and
hold the lever partway)
The right hand signals will flash until you
release the lever.
Lane change to the left (push and
hold the lever partway)
The left hand signals will flash until you
release the lever.
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 re ar turn signal lights has not burned out.
Operating instructions
1
2
3
4
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GX 460 _O M_ OM6 0F 6 8U _(U )4-3. Operating the lights and wipers
Headlight switch
Turning the end of the lever tu
rns on the lights as follows:
XTy p e A
The headlights, parking
lights, daytime running
lights (→P. 2 0 4 ) a n d s o o n
turn on and off automati-
cally (when the engine
switch is in IGNITION ON
mode).
The side marker, parking,
tail, license plate and instru-
ment panel lights turn on.
The headlights and all the
lights listed above turn on.
The daytime running lights
turn off.
The headlights can be operated manually or automatically.
Operating instructions
1
2
3
4
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GX 460 _O M_ OM6 0F 6 8U _(U )
2034-3. Operating the lights and wipers
4
Driving
XTy p e BThe daytime running lights
turn on. (→ P. 2 0 4 )
The side marker, parking
tail, license plate and instru-
ment panel lights turn on.
The headlights and all lights
listed above turn on.
The headlights, parking
lights, daytime running
lights ( →P. 2 0 4 ) a n d s o o n
turn on and off automati-
cally (when the engine
switch is in IGNITION ON
mode).
With the headlights on, push the
lever away from you to turn on the
high beams.
When the light switch is in “AUTO” posi-
tion, the Automatic High Beam system
will be activated. ( →P. 2 0 5 )
Pull the lever toward you to the center
position to turn the high beams off.
Pull the lever toward you and release
it to flash the high beams once.
You can flash the high beams with the headlights on or off.
1
2
3
4
Turning on the high beam headlights
1
2
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