Page 840 of 1014
8166-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Install the visor cover on the
mirror frame, secure it with
a screw, and install the side
turn signal light and outer
foot light.
Use only the screw position
shown in the illustration.
Side turn signal light: Align the
tabs on the light and the cover
and install.
Outer foot light: Interlock the
tabs in the groove of the light
body with those on the cover,
and secure.
Disconnect the tabs, and
separate the top and bottom
of the rear side cover of the
mirror.
8
9
Page 841 of 1014
817 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
Install the cover of the back
end of the mirror, installing
the lower side and the upper
side in that order.
When installing the lower side
of the cover, insert the side turn
signal light pin into the hole in
the cover.
Secure the cover with
screws and reconnect the
connectors back together.
Secure the cords by returning
them to the hooks as they were.
Align the tabs, and secure
the mirror by pushing in
each diagonally-opposite
pair of tabs in order.
Make sure to insert the tabs in
order as shown in the illustra-
tion, and push them in until a
click is heard.
If you do not hear the click, do
not force the tabs in. Instead,
remove the mirror and check
that the tabs are aligned.
10
11
12
Page 859 of 1014
8327-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
Wa r n i n g
lightWarning light/Details
Page 865 of 1014

8387-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional. The vehicle will become extremely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a
loss of vehicle control and result in death or serious injury.
Stop your vehicle in a safe place as soon as possible. Adjust the tire infla-
tion pressure immediately.
If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires. If a
tire is flat, change it with the spare tire and have the flat tire repaired by
the nearest any authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
NOTICE
Precaution when installing a different tire
When differently constructed tires or tires of different makers, models or
tread patterns are installed, the tire pressure warning system may not oper-
ate properly.
Page 871 of 1014
8447-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
(If equipped)
Indicates a malfunction in the adaptive front-
lighting system
Indicates a malfunction in:
• The SRS airbag system; or,
• The seat belt pretensioner system
(If equipped)
Indicates a malfunction in the Automatic High
Beam system
Indicates a malfunction in:
•The ABS; or,
• The brake assist system
Indicates a malfunction in the brake hold system
Wa r n i n g m e s s a g eDetails
(Flashes)
Page 910 of 1014

8837-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
When using the compact spare tire
Remember that the compact spare tire provided is specifically designed
for use with your vehicle. Do not use your compact spare tire on another
vehicle.
Do not use more than one compact spare tire simultaneously.
Replace the compact spare tire with a standard tire as soon as possible.
Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems
may not operate correctly:
• ABS & Brake assist
•VSC
•TRC
• Cruise control (if equipped)
• Dynamic radar cruise control
(if equipped)
• PCS (if equipped)
•EPS
• AFS (if equipped)
• LDH (if equipped)• DRS (if equipped)
• AVS (if equipped)
• LKA (Lane-Keeping Assist)
(if equipped)
• VGRS (if equipped)
• Lexus parking assist monitor
(if equipped)
• Lexus parking assist-sensor
(if equipped)
• Navigation system (if equipped)
Page 994 of 1014

962Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Alphabetical index
A/C ............................................478
Air conditioning filter ...........777
Changing the rear seat
settings ...............................487
Front automatic air
conditioning system ...........478
Humidity sensor ...................491
nanoe™ system ....................494
Pollen removal mode ............488
Rear air conditioning system 496
S-FLOW mode .....................488
ABS (Anti-lock Brake System) .397
Function ................................397
Warning light........................832
Warning message..................844
Adaptive Front-lighting System
(AFS) .....................................274
Adaptive Variable Suspension
system (AVS)..........................398
AFS (Adaptive Front-lighting
System) ...................................274
Air conditioning filter ...............777
Air conditioning system ............478
Air conditioning filter ...........777
Changing the rear seat
settings ...............................487
Front automatic air
conditioning system ...........478
Humidity sensor ...................491
nanoe™ system ....................494
Pollen removal mode ............488
Rear air conditioning system 496
S-FLOW mode .....................488Airbags ....................................... 44
Airbag manual on-off system 56
Airbag operating conditions .. 51
Airbag precautions for
your child ............................ 47
Airbag warning light............ 831
Correct driving posture .......... 36
Curtain shield airbag operating
conditions ............................ 51
Curtain shield airbag
precautions .......................... 49
General airbag precautions .... 47
Locations of airbags............... 44
Modification and disposal of
airbags ................................. 50
Side airbag operating
conditions ............................ 51
Side airbag precautions.......... 47
Side and curtain shield airbags
operating conditions ............ 51
Side and curtain shield airbags
precautions .......................... 47
SRS airbags............................ 44
Airbag manual on-off system ..... 56
Alarm .......................................... 97
Alarm ..................................... 97
Warning buzzer............ 830, 839
Anchor brackets.......................... 71
Antennas (smart entry &
start system) .......................... 145
A
Page 995 of 1014

963Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Anti-lock Brake System (ABS) .397
Function ................................397
Warning light........................832
Warning message..................844
Approach warning
Dynamic radar cruise control .....
308
Dynamic radar cruise control
with full-speed range..........326
Armrest ......................................711
Ashtrays.....................................699
Assist grips ................................716
Audio input................................604
Audio system .............................501
Audio input ...........................604
AUX port/
USB port ............581, 593, 604
Bluetooth
® audio ..................567
CD/DVD player ....................536
CD/DVD player information 557
DVD video ...........................544
iPod.......................................591
MP3/WMA disc ...................538
Optimal use...........................602
Portable music player ...........604
Radio ....................................527
Rear seat audio controls........606
Steering wheel audio switch .611
USB memory ........................579
Automatic headlight leveling
system ....................................275
Automatic High Beam ..............277
Automatic light control system 272
AUX port ...................................604
Auxiliary boxes .........................693AVS (Adaptive Variable
Suspension system) ................ 398