2015 Lexus GS300h parking brake

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4
4-2. Driving procedures
Driving
GS450h_300h_OM_OM30F00E_(EE)
Power (ignition) switch
Press the parking brake switch to check that the parking brake is set.
(
→ P. 2 3 1 )
Parking brake indicator will come on.
Check that the shift lever is 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.
If the “READY” indicator turns on, the
hybrid system will operate normally.
Continue depressing the brake pedal
until the “READY” indicator is illumi-
nated.
The hybrid system can be started from
any power switch mode.
Check that the “READY” indicator is
illuminated.
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

2184-2. Driving procedures
GS450h_300h_OM_OM30F00E_(EE)
Stop the vehicle completely.
Shift the shift lever to P.
Set the parking brake. (→P. 2 3 1 )
Press the power switch.
Release the brake pedal and check that “POWER ON” on the multi-informa-
tion display is off.
Modes can be changed by pressing the power switch with brake pedal released.
(The mode changes each time the switch is pressed.)
Off
*
The emergency flashers can be used.
“POWER ON” will not be displayed on
the multi-information display.
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 system, 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

2194-2. Driving procedures
4
Driving
GS450h_300h_OM_OM30F00E_(EE)
If the hybrid system is stopped with the shift lever in a position other than P, the
power switch will not be turned off but instead be turned to ACCESSORY
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 “Turn Off Vehicle” is displayed on the multi-information display
and then press the power switch once.
Check that “Turn Off Vehicle” on the multi-information display is off.
■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 prevent 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 7
■Electronic key battery depletion
→P. 1 3 6
■When the ambient temperature is low, su ch as during winter driving conditions
When starting the hybrid system, the flashing time of the “READY” indicator may be
long. Leave the vehicle as it is until the “REA DY” indicator is steady on, as steady means
the vehicle is able to move.
■Conditions affecting operation
→ P. 1 5 5
■Notes for the push-start function
→P. 1 5 7
■If the hybrid system does not start
●The immobilizer system may not have been deactivated. ( →P. 8 4 )
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
●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 to Start” 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 func tion. Operating the power switch again auto-
matically cancels the steering lock.
When stopping the hybrid system with the shift lever in a position other
than P
1
2
3
4

2244-2. Driving procedures
GS450h_300h_OM_OM30F00E_(EE)
Hybrid transmission
While the power switch is in 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.
*1: To improve fuel efficiency and reduce noises , set the shift lever in D for normal driving.
*2: By selecting shift ranges using S mode, you can control accelerating forces and
engine braking forces.
Shifting the shift lever
Shift position purpose
Shift positionObjective or function
PParking the vehicle/starting the hybrid system
RReversing
NNeutral
(Condition in which the power is not transmitted)
DNormal driving*1
SS mode driving*2 ( → P. 2 2 7 )

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4-2. Driving procedures
Driving
GS450h_300h_OM_OM30F00E_(EE)
Parking brake
Sets the parking brake
The parking brake indicator light will
come on. (
→P. 232)
Press and hold the parking brake switch
if an emergency occurs and it is neces-
sary to operate the parking brake while
driving.
Releases the parking brake
Operate the parking brake switch while
depressing the brake pedal. Make sure
that the parking brake indicator light
goes off.
The parking brake is set or released automatically according to shift lever opera-
tion.
Turns automatic mode on/off
●When the shift lever is moved out of
P, the parking brake will be released.
●When the shift lever is moved into P,
the parking brake will be set.
Operate the shift lever with the brake
pedal depressed.
A selections can be made as de sired from the following modes.
Manual mode
1
2
Automatic mode

2324-2. Driving procedures
GS450h_300h_OM_OM30F00E_(EE)
■Parking brake operation
●When the power switch is not in ON mode, the parking brake cannot be released using
the parking brake switch.
●When the power switch is not in ON mode, automatic mode (automatic brake setting
and releasing) is not available.
●If the parking brake is operated repeatedly over a short period of time, the system may
restrict operation to prevent overheating. If this happens, refrain from operating the
parking brake. Normal operation will return after about 1 minute.
●Vehicles with towing package: In situations such as when parking while towing a trailer,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
●Vehicles without towing package: In situations such as when parking on a steep slope*,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
*: Use wheel chocks when parking on a steep slope.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light
●Depending on the power switch mode, the parking brake indicator light will come on
and stay on as described below:
ON mode: Comes on until the parking brake is released.
Not in ON mode: Stays on for approximately 15 seconds.
●When the power switch is turned off with the parking brake set, the parking brake indi-
cator light will stay on for about 15 seco nds. This does not indicate a malfunction.
■When there is a malfunction in the system
Warning lights and/or warning message will turn on or flash. (→P. 4 7 8 , 4 8 2 )
Depending on the condition, the park ing brake indicator light may flash.
■Parking brake engaged warning buzzer
→P. 4 8 8
■Usage in winter time
→P. 3 5 4

2334-2. Driving procedures
4
Driving
GS450h_300h_OM_OM30F00E_(EE)
NOTICE
■When parking the vehicle
Before you leave the vehicle, set the parking brake, shift the shift lever to P and make
sure that the vehicle does not move.
■When the system malfunctions
Stop the vehicle in a safe place and check the warning messages.
■When the parking brake cannot be released due to a malfunction
Use the parking brake release tool to manually release the parking brake. (→P. 5 4 6 )
Driving the vehicle with the parking brake set will lead to brake components overheat-
ing, which may affect braking performance and increase brake wear.

2344-2. Driving procedures
GS450h_300h_OM_OM30F00E_(EE)
Brake Hold
Turns the brake hold system on
The brake hold standby indicator
(green) comes on. While the system is
holding the brake, the brake hold oper-
ated indicator (yellow) comes on.
■Brake hold system operating conditions
The brake hold system cannot be turn ed on in the following conditions:
●The driver’s door is not closed.
●The driver is not wearing the seat belt.
●“EPB Activation Stopped Incompletely” or “Electronic Parking Brake Malfunction Visit
Your Dealer” is displayed on the multi-information display.
If any of the conditions above are detected when the brake hold system is enabled, the
system will turn off and the brake hold standby indicator light will go off. In addition, if any
of the conditions are detected while the sy stem is holding the brake, a warning buzzer
will sound and a message will be shown on th e multi-information display. The parking
brake will then be set automatically.
■Brake hold function
●If the brake pedal is left released for a period of about 3 minutes after the system has
started holding the brake, th e parking brake will be set automatically. In this case, a
warning buzzer sounds and a message is shown on the multi-information display.
●To turn the system off while the system is holding the brake, firmly depress the brake
pedal and press the button again.
●The brake hold function may not hold the vehicle when the vehicle is on a steep incline.
In this situation, it may be necessary for the driver to apply the brakes. A warning
buzzer will sound and the multi-information di splay will inform the driver of this situa-
tion. ( →P. 4 8 2 )
The brake hold system keeps the brake applied when the shift lever is in D, S or
N with the system on and the brake peda l has been depressed to stop the vehi-
cle. The system releases the brake wh en the accelerator pedal is depressed
with the shift lever in D or S to allow smooth start off.