2015 Lexus GS450h Opening, closing and locking the doors and trunk / LEXUS 2015 GS450H FROM MAR. 2015 PROD. OWNERS MANUAL (OM30F70U)

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GS450h_OM_OM30F70U_(U)4-2. Driving procedures
4
Driving
Power (ignition) switch
Check that the parking brake is set.
Check that the shift lever is set in P.
Firmly depress the brake pedal.
will be displayed on the multi-information display.
If it is not displayed, the hybrid system cannot be started.
Press the power switch.
Continue depressing the brake pedal
until the hybrid system is completely
started.
The hybrid system can be started from
any power switch mode.
Check that the “READY” indicator is on.
The vehicle will not move when the “READY” indicator is off.
Performing the following operations when carrying the electronic key
on your person starts the hybrid system or changes power switch
modes.
Starting the hybrid system
1
2
3
4
5

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Stop the vehicle.
Shift the shift lever to P.
Set the parking brake. (P. 211)
Press the power switch.
Release the brake pedal and check that “POWER ON” on the multi-
information display is off.
Modes can be changed by pressing th e power switch with brake pedal
released. (The mode changes each time the switch is pressed.)
Off*
The emergency flashers can be used.
The multi-information display will not
be displayed.
ACCESSORY mode
Some electrical components such as
the audio system can be used.
“POWER ON” will be displayed on
the multi-information display.
ON mode
All electrical components can be
used.
“POWER ON” will be displayed on
the multi-information display.
*: If the shift lever is in a position other
than P when turning off the hybrid sys-
tem, the power switch will be turned to
ACCESSORY mode, not to off.
Stopping the hybrid system
Changing power switch modes
1
2
3
4
5

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1954-2. Driving procedures
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Driving
If the hybrid system is stopped with the shift lever in a position other than P,
the power switch will no t be turned off but instead be turned to ACCES-
SORY mode. Perform the following procedure to turn the switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that “POWER ON” and “Turn Power OFF” are displayed alter-
nately on the multi-information display and then press the power switch
once.
Check that “POWER ON” and “Tur n Power OFF” on the multi-infor-
mation display are off.
When stopping the hybrid system wi th the shift lever in a position
other than P
1
2
3
4

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■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON mode
(the hybrid system is not operating) for more than an hour with the shift lever in P, the
power switch will automatically turn off. However, this function cannot entirely pre-
vent 12-volt battery discharge. Do not leave the vehicle with the power switch in
ACCESSORY or ON mode for long periods of time when the hybrid system is not
operating.
■Sounds and vibrations specific to a hybrid vehicle
 P. 7 5
■Electronic key battery depletion
P. 1 3 4
■When the ambient temperature is low, such as during winter driving conditions
It may take time until the “READY” indicator comes on.
■Conditions affecting operation
P. 1 3 0
■Notes for the entry function
P. 1 3 1
■If the hybrid system does not start
●The immobilizer system may not have been deactivated. ( P. 8 1 )
Contact your Lexus dealer.
●Check that the shift lever is securely set in P. The hybrid system may not start if the
shift lever is displaced out of P. “Shift to P position when Starting” will be displayed
on the multi-information display.
■Steering lock
After turning the power switch off and opening and closing the doors, the steering
wheel will be locked due to the steering lock function. Operating the power switch
again automatically cancels the steering lock.

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Driving
■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 hybrid system is turned on and off repeatedly in a short period of time. In this
case, refrain from operating the hybrid sy stem. After about 10 seconds, the steering
lock motor will resume functioning.
■When “Check Access System with Elec. Key” will be displayed on the multi-infor-
mation display
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the power switch with
the shift lever in P and the brake pedal depressed, contact your Lexus dealer imme-
diately.
■If the hybrid system is malfunctioning
 P. 5 1 4
■If the electronic key battery is depleted
P. 4 6 0
■Operation of the power switch
●When operating the power switch, one short, firm press is enough. If the switch is
pressed improperly, the hybrid system may not start or the power switch mode may
not change. It is not necessary to press and hold the switch.
●If attempting to restart the hybrid sy stem immediately after turning the power
switch off, the hybrid system may not star t in some cases. After turning the power
switch off, please wait a few seconds before restarting the hybrid system.
■If the smart access system with push-but ton start has been deactivated in a cus-
tomized setting
 P. 559
“Steering Lock active” will be displayed on
the multi-information display.
Check that the shift lever is set in P. Press the
power switch while turning the steering wheel
left and right.

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CAUTION
■When starting the hybrid system
Always start the hybrid system while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the hybrid system under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Caution while driving
If hybrid system 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 circumstance may lead to an accident, resulting in death or serious
injury.
■Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehicle,
press and hold the power switch for more th an 2 seconds, or press it briefly 3 times
or more in succession. ( P. 495)
However, do not touch the power switch while driving except in an emergency.
Turning the hybrid system off while driving will not cause loss of steering or braking
control, however, power assist to the steering will be lost. This will make it more dif-
ficult to steer smoothly, so you should pull over and stop the vehicle as soon as it is
safe to do so.

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Driving
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the power switch in ACCESSORY or ON mode for long periods of
time without the hybrid system on.
●If “POWER ON” is displayed on the multi-information display, the power switch
is not off. Exit the vehicle after turning the power switch off.
●Do not stop the hybrid system when the shift lever is in a position other than P. If
the hybrid system is stopped in another shift lever position, the power switch will
not be turned off but instead be turned to ACCESSORY mode. If the vehicle is
left in ACCESSORY mode, 12-vol t battery discharge may occur.
■Symptoms indicating a malfunction with the power switch
If the power switch seems to be operating somewhat differently than usual, such as
the switch sticking slightly, there may be a malfunction. Contact your Lexus dealer
immediately.

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EV drive mode
Turns EV drive mode on/off
When EV drive mode is turned on,
“EV MODE” will be displayed on the
multi-information display. Pressing the
switch when in EV drive mode will
return the vehicle to normal driving
(using the gasoline engine and electric
motor [traction motor]).
■Situations in which EV drive mode cannot be turned on
It may not be possible to turn EV drive mode on in the following situations. If it cannot
be turned on, a buzzer will sound and a message will be shown on the multi-informa-
tion display.
●The temperature of the hybrid system is high.
The vehicle has been left in the sun, driv en on a hill, driven at high speeds, etc.
●The temperature of the hybrid system is low.
The vehicle has been left in temperatures lower than about 32
F (0C) for a long
period of time etc.
●The gasoline engine is warming up.
●The hybrid battery (traction battery) is low.
The remaining battery level indicated in the “Energy Monitor” display is low.
(  P. 112)
●Vehicle speed is about 25 mph (40 km/h) or more.
●The accelerator pedal is depressed firmly or the vehicle is on a hill etc.
●The windshield defogger is in use.
In EV drive mode the electric moto r (traction motor), powered by the
hybrid battery (traction battery), is used to drive the vehicle.
This mode allows you to drive in re sidential areas early in the morning
and late at night, or in indoor pa rking lots etc. without concern for
noises and gas emissions.
However, when the vehicle proximity notification system is active, the
vehicle may produce sound.