2013 Lexus GS300h power steering

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.

3774-5. Using the driving support system
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
If the message “Steering wheel turned too far, please return.”
is displayed
The steering wheel has been turned too far, and the system
cannot function. Return the steering wheel to its original posi-
tion.
If the message is displayed before the outline is positioned
over the desired parking space, it is likely that the vehicle is
too far away from the shoulder. Check that there is a gap of
approximately 1 m (3 ft.) between your vehicle and the parked
vehicle.
Narrow mode
If the position the vehicle is to be parked in is narrower than
usual, narrow mode can be used.
Normal mode
Narrow mode
The power switch is turned off
when the parking assist monitor
is canceled with narrow mode,
the caution screen is displayed
first when the parallel parking
assist is selected next time.
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2

3874-5. Using the driving support system
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Guide lines are not dis-
playedThe trunk lid is open.
Close the trunk lid.
If this does not resolve
the symptom, have the
vehicle inspected by
any authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
“System is initializ-
ing.” is displayed
• The 12-volt battery
has been reinstalled.
• The steering wheel
has been moved
while the 12-volt bat-
tery was being rein-
stalled.
• 12-volt battery power
is low.
• The steering sensor
has been reinstalled.
• There is a malfunc-
tion in the signals
being output by the
steering sensor.
Stop the vehicle, and
turn the steering wheel
as far as it will go to
the left and right.
If this does not resolve
the symptom, have the
vehicle inspected by
any authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
• On the system initial-
ization screen, select
the “?” button to dis-
play the operating
procedure.
SymptomLikely causeSolution

3974-5. Using the driving support system
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Driving assist systems
ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied sud-
denly, or if the brakes are applied while driving on a slippery
road surface
Brake assist
Generates an increased level of braking force after the brake
pedal is depressed when the system detects a panic stop situation
VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or
turning on slippery road surfaces
TRC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from
spinning when starting the vehicle or accelerating on slippery
roads
VGRS (Variable Gear Ratio Steering) (if equipped)
Adjusts the front wheel turning angle in accordance with the
vehicle speed and steering wheel movement
To help enhance driving safety and performance, the following
systems operate automatically in response to various driving situa-
tions. Be aware, however, that these systems are supplementary
and should not be relied upon too heavily when operating the vehi-
cle.

3984-5. Using the driving support system
GS450h_300h_OM_OM30D53E_(EE)
DRS (Dynamic Rear Steering) (if equipped)
Contributes to the turning characteristics and responsiveness of
the vehicle by slightly adjusting the rear wheel angle of the vehi-
cle in accordance with steering wheel movement
EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed
to turn the steering wheel
AVS (Adaptive Variable Suspension system) (if equipped)
By independently controlling the damping force of the shock
absorbers for each of the 4 wheels according to the road and driv-
ing conditions, this system helps riding comfort with superior
steering stability, and helps good vehicle posture
When SPORT S+ mode is selected by the driving mode select
switch, the damping force is suitable for sporty driving (P.
394)
LDH (Lexus Dynamic Handling system) (if equipped)
Provides independent control of the VGRS, DRS and EPS. Con-
tributes to turning characteristics at low speeds, responsiveness
at medium speeds and safety at high speeds by controlling the
steering angle of the front and rear wheels in accordance with the
steering wheel operation and vehicle speed
VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRC, VSC,
EPS, VGRS (if equipped) and DRS (if equipped) systems
Helps to maintain vehicle stability when swerving on slippery
road surfaces by controlling the brakes, hybrid system output,
steering assist, and steering ratio and rear wheel angle

441
5Interior features
GS450h_300h_OM_OM30D53E_(EE)5-4. Using the hands-free phone
system (for cellular phone)
Hands-free system
(for cellular phone) ......... 611
Using a Bluetooth
®
phone............................... 625
Setting the hands-free system
(for cellular phone) ......... 645
Setting the Bluetooth
®...... 671
5-5. Using the interior lights
Interior lights list ............... 684
• Interior light .................. 685
• Personal lights............... 685
5-6. Using the storage features
List of storage features ...... 687
• Glove box ..................... 689
• Console box .................. 690
• Cup holders ................... 691
• Auxiliary boxes............. 693
Trunk features ................... 6945-7. Other interior features
Sun visors and
vanity mirrors ................. 697
Clock................................. 698
Ashtrays ............................ 699
Power outlets .................... 700
Heated steering wheel....... 702
Seat heaters/
seat ventilators ................ 704
Armrest ..............................711
Rear sunshade/
rear door sunshades ........ 712
Coat hooks ........................ 715
Assist grips ....................... 716
Utility hook ....................... 717

6115-3. Using the audio system
5
Interior features
GS450h_300h_OM_OM30D53E_(EE)
Using the steering wheel audio switches
Radio mode:Selects a radio
station
DAB mode:Selects a service
and channel
Audio CD mode: Selects a
track
MP3/WMA disc mode:
Selects a file and
folder
DVD mode:Selects a chapter
Bluetooth
® audio mode:
Selects a track
and album
iPod mode: Selects a track
USB memory mode:
Selects a file and
folder/album
Vo l u m e
Turns the power on, selects
audio source, mute or pause
Some audio features can be controlled using the switches on the
steering wheel.
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6395-4. Using the hands-free phone system(for cellular phone)
5
Interior features
GS450h_300h_OM_OM30D53E_(EE)
When a call is received, the following screen is displayed together
with a sound.
Select or press on
the steering wheel.
To refuse a call
Select or press on the steering wheel.
To adjust the incoming call volume
Select “-” or “+”, turn the “power/volume” knob, or use the vol-
ume switch on the steering wheel.
International calls
Received international calls may not be displayed correctly depending on the
cellular phone in use.
Receiving a call