Page 711 of 860
711
GS450h_U (OM30D01U)
7
When trouble arises
7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by your Lexus dealer.
Stop the vehicle immediately. Cont inuing to drive the vehicle may
be dangerous.
Warning lightWarning light/Details
(U.S.A.)
(Canada)Brake system warning light (warning buzzer) •Low brake fluid
• Malfunction in the electronically controlled brake system
Page 721 of 860
721
GS450h_U (OM30D01U)
7
When trouble arises
7-2. Steps to take in an emergency
If a warning message is displayed
Master warning light
The master warning light also comes
on or flashes in order to indicate that a
message is currently being displayed
on the multi-information display.
Multi-information display
If any of the warning light comes on again after the following actions have
been performed, contact your Lexus dealer.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
If a warning is shown on the multi- information display, stay calm and
perform the following actions:
1
2
Stop the vehicle immediately. Cont inuing to drive the vehicle may
be dangerous.
Wa r n i n g m e s s a g eDetails
Indicates the following: • The brake fluid level is low; or,
• The brake system is malfunctioning. A buzzer also sounds.
(U.S.A.)
(Canada)
Page 739 of 860
7397-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
A warning message is shown on the multi-information display. After taking
the specified steps to correct the suspected problem, check that the
warning message goes off.
Follow the correction procedures.
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates that the brake
hold system is not hold
the vehicle when the
vehicle is on a slippery
road
Use the brake hold sys-
tem when it becomes
available.
Indicates that the washer
fluid level is lowAdd washer fluid.
Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule
*
should be performed
soon.If necessary, perform
maintenance.
Comes on approxi-
mately 4500 miles
(7200 km) after the
maintenance data has
been reset.
(U.S.A. only)
Page 789 of 860

GS450h_U (OM30D01U)
7898-1. Specifications
8
Vehicle specifications
Your Lexus vehicle is filled with “Toyota Genuine Differential Oil” at the factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equivalent of
matching quality to satisfy the above specification. Please contact your Lexus dealer
for further details.
*: Minimum pedal clearance when depressed with a force of 112.4 lbf (500 N,
51.0 kgf) while the hybrid system is operating.
When performing the brake pedal inspection, also be sure to check that the
brake system warning light is not illumina ted when the hybrid system is operating
(If the brake system warning light is illuminated, refer to P. 711).
Differential
Oil capacity1.43 qt. (1.35 L, 1.19 Imp.qt.)
Oil type and viscosityToyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
Brakes
Pe d a l c l e a r a n c e*4.5 in. (115 mm) Min.
Pedal free play0.04 — 0.08 in. (1.0 — 2.0 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
Steering
Free playLess than 1.2 in. (30 mm)
Page 841 of 860

841Alphabetical index
GS450h_U (OM30D01U)
Alarm ..............................................................81Alarm............................................................ 81
Warning buzzer .......................... 711, 721
Anchor brackets ...................................... 62
Antennas (smart access system with push-button start) ......................123
Anti-lock Brake System (ABS)....... 289 Function ................................................. 289
Warning light ......................................... 712
Warning message ............................. 725
Approach warning (dynamic radar cruise control) ........................ 242
Armrest .................................................... 593
Ashtrays....................................................585
Assist grips ..............................................598
Audio input.............................................. 497
Audio system.......................................... 386 Audio input............................................ 497
AUX port/USB port..................... 497, 477, 487
Bluetooth
® audio.............................. 465
CD/DVD player ................................433
CD/DVD player information ......453
DVD video ............................................. 441
iPod .......................................................... 485
MP3/WMA disc ...............................435
Optimal use ......................................... 495
Portable music player ...................... 497
Radio ....................................................... 409
Rear seat audio controls ............... 498
Steering wheel audio switch ....... 503
USB memory .......................................475 Automatic headlight leveling
system ...................................................... 216
Automatic light control system ........ 213
AUX port ................................................. 497
Auxiliary boxes ..................................... 580
AVS (Adaptive Variable Suspension system) ......................... 290
Back-up lights Replacing light bulbs .......................696
Wattage ................................................... 791
Battery (12-volt battery) ..................... 647 If the 12-volt battery is discharged......................................... 770
Preparing and checking before winter......................................................319
Warning light ......................................... 712
Battery (traction battery) ...................... 74
Blind Spot Monitor (BSM) ............... 305
Bluetooth®
Audio system ....................................... 465
Hands-free system (for cellular phone) ...................... 506
Brake Brake Hold .............................................210
Fluid .......................................................... 645
Parking brake ...................................... 207
Regenerative braking .......................... 72
Warning light .................................711, 714
Warning message............................... 721
B
Page 845 of 860

845Alphabetical index
GS450h_U (OM30D01U)
Energy monitor ........................................ 110
EngineAccessory mode................................. 190
Compartment ......................................637
Engine switch ........................................ 189
Hood ........................................................634
How to start the hy brid system .... 189
Identification number .......................783
Ignition switch (power switch).................................. 189
Overheating ......................................... 774
Power switch......................................... 189
Engine compartment cover ............. 638
Engine coolant....................................... 642 Capacity ................................................. 787
Checking................................................642
Preparing and checking before winter ..................................... 319
Engine coolant temperature gauge ........................................................ 89
Engine oil ................................................. 639 Capacity ................................................ 785
Checking............................................... 639
Oil level warning message ........... 733
Oil pressure warning message ........................... 722
Preparing and checking before winter ..................................... 319 Engine oil maintenance data ............624
Engine switch ...........................................189
EPS
(Electronic Power Steering) ........ 289Function .................................................. 289
Warning light ......................................... 712
Warning message............................. 726
EV drive mode ........................................ 196
Event data recorder (EDR).....................11
First-aid kit storage net ........................581
Flat tire ....................................................... 749
Floor mats................................................... 28
Fluid Brake........................................................ 789
Hybrid transmission .........................788
Washer ................................................... 646
Fog lights.................................................... 218 Replacing light bulbs ...................... 689
Switch ........................................................218
Wattage ................................................... 791
Footwell light ............................................ 571
Front passenger occupant classification system ............................49
Front personal lights ............................572
F