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2444-1. Before driving
GS450h_300h_OM_OM30D53E_(EE)
Your vehicle will handle differently when towing a trailer. In order
to avoid accident, death or serious injury, keep the following in
mind when towing:
Checking connections between trailer and lights
Stop the vehicle and check the operation of the connection
between the trailer and lights after driving for a brief period as
well as before starting off.
Practicing driving with a coupled trailer
Get the feel for turning, stopping and reversing with the trailer
coupled by practicing in an area with no or light traffic.
When reversing with a coupled trailer, hold the section of the
steering wheel nearest to you and rotate clockwise to turn the
trailer left or counterclockwise to turn it right. Always rotate a
little at a time to prevent steering error. Have someone guide
you when reversing to lessen the risk of an accident.
NOTICE
When the rear bumper strengthening material is aluminum
Ensure the steel bracket part does not come directly in contact with that
area.
When steel and aluminum come into contact, there is a reaction similar to
corrosion, which will weaken the section concerned and may result in dam-
age. Apply a rust inhibitor to parts that will come in contact when attaching
a steel bracket.
Guidance
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2504-2. Driving procedures
GS450h_300h_OM_OM30D53E_(EE)
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. 8 3
Electronic key battery depletion
P. 1 5 4
When the ambient temperature is low, such as during winter driving condi-
tions
It may take time until the “READY” indicator comes on.
Conditions affecting operation
P. 1 5 0
Notes for the push-start function
P. 1 5 3
If the hybrid system does not start
The immobilizer system may not have been deactivated. (P. 9 1 )
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 when Start-
ing” 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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2514-2. Driving procedures
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
When the steering lock cannot be released
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the hybrid system is turned on and off repeatedly in a short period
of time. In this case, refrain from operating the hybrid system. After about 10
seconds, the steering lock motor will resume functioning.
When “Check Entry & Start System” will be displayed on the multi-informa-
tion display
The system may be malfunctioning. Have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional 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 any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional immediately.
If the hybrid system is malfunctioning
P. 8 4 0
If the electronic key battery is depleted
P. 9 0 2
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 system immediately after turning the
power switch off, the hybrid system may not start in some cases. After turn-
ing the power switch off, please wait a few seconds before restarting the
hybrid system.
If the smart entry & start system has been deactivated in a customized setting “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 steer-
ing wheel left and right.
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2524-2. Driving procedures
GS450h_300h_OM_OM30D53E_(EE)P. 9 0 8
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. Activa-
tion 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 than 2 seconds, or press
it briefly 3 times or more in succession. (P. 821)
However, do not touch the power switch while driving except in an emer-
gency. 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 difficult 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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2754-3. Operating the lights and wipers
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Daytime running light system
To make your vehicle more visible to other drivers, the front position lights
turn on automatically whenever the hybrid system is started and the parking
brake is released. Daytime running lights are not designed for use at night.
Headlight control sensor
Automatic light off system
When the light switch is in : The headlights turn off automatically if the
power switch is turned to ACCESSORY mode or turned off.
When the light switch is in : The headlights and all lights turn off auto-
matically if the power switch is turned to ACCESSORY mode or turned off.
To turn the lights on again, turn the power switch to ON mode, or turn the
light switch off once and then back to or .
If any of the doors or trunk lid is kept open, the lights automatically turn off
after 20 minutes.
Light reminder buzzer
A buzzer sounds when the power switch is turned off or turned to ACCES-
SORY mode and the driver’s door is opened while the lights are turned on.
Automatic headlight leveling system
The level of the headlights is automatically adjusted according to the number
of passengers and the loading condition of the vehicle to ensure that the
headlights do not interfere with other road users. The sensor may not function properly if
an object is placed on the sensor, or any-
thing that blocks the sensor is affixed to
the windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight system
to malfunction.
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2914-3. Operating the lights and wipers
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Raindrop sensor (vehicles with rain-sensing windshield wipers)
If AUTO mode is selected while the power switch is in ON mode, the wip-
ers will operate once to show that AUTO mode is activated.
If the temperature of the raindrop sensor is 85°C (185°F) or higher, or -
30°C (-22°F) or lower, automatic operation may not occur. In this case,
operate the wipers in any mode other than AUTO mode.
When the windshield wipers are in temporary operation
AUTO mode cannot be activated even if is pressed.
If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the
windshield washer fluid reservoir.
The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from
the rising or setting of the sun intermit-
tently strikes the windshield, or if bugs
etc. are present on the windshield.
CAUTION
Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched
or the windshield is subject to vibration in AUTO mode. Take care that
your fingers or anything else do not become caught in the windshield wip-
ers.
Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes
warm. The fluid may freeze on the windshield and cause low visibility.
This may lead to an accident, resulting in death or serious injury.
Page 302 of 1014
2924-3. Operating the lights and wipers
GS450h_300h_OM_OM30D53E_(EE)
NOTICE
When the windshield is dry
Do not use the wipers, as they may damage the windshield.
When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled
toward you and held continually.
When a nozzle becomes blocked
In this case, contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
When standing the windshield wipers up
Raise the wipers in line with the windshield. (P. 437)
Failure to do so may result in damage to the wipers and/or the hood.
Page 306 of 1014
2954-4. Refueling
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
With the doors unlocked, press
the center of the rear edge of
the fuel filler door.
Push until you hear a click and
take your hand away to slightly
open the fuel filler door. Then
open the door fully by hand.
Turn the fuel tank cap slowly
to open.
Hang the fuel tank cap on the
back of the fuel filler door.
Opening the fuel tank cap
1
2
3