2015 Lexus GS450h traction control

12
GS450h_OM_OM30E26U_(U)
The SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with the airbags and seat belt pretensioners left
as they are, this may cause an accident such as fire. Be sure to have the systems of
the SRS airbag and seat belt pretensioner removed and disposed of by a qualified
service shop or by your Lexus deal er before you scrap your vehicle.
Special handling may apply, See www.dt sc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlorate. These components may
include airbag, seat belt pretensioners, and wireless remote control batteries.
Scrapping of your Lexus
Perchlorate Material
CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol
and certain drugs delay reaction time, impa ir judgment and reduce coordination,
which could lead to an accident that could result in death or serious injury.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers
or pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to driving. Anything that distracts
the driver, such as adjusting controls, ta lking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precaution regarding children’s safety
Never leave children unattended in the vehicle, and never allow children to have or
use the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is
also a danger that children may injure th emselves by playing with the windows, the
moon roof, or other features of the vehicle. In addition, heat build-up or extremely
cold temperatures inside the vehicle can be fatal to children.

761-2. Hybrid system
GS450h_OM_OM30E26U_(U)
Hybrid system precautions
Take care when handling the hybrid system, as it contains a high voltage
system (about 650 V at maximum) as well as parts that become
extremely hot when the hy brid system is operating. Obey the caution
labels attached to the vehicle.
Caution label
Power control unit
Electric motor (traction motor)
Hybrid battery (traction bat-
tery) Service plug
High voltage cables (orange)
Air conditioning compressor1
2
3
4
5
6
7

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GS450h_OM_OM30E26U_(U)
4-5. Using the driving support systems
Driving assist systems
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while dri ving on a slippery road surface
◆Brake assist
Generates an increased level of br aking 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
◆Enhanced VSC (Enhanced Vehicle Sta bility Control) (if equipped)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road
surfaces by controllin g steering performance.
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spin-
ning when starting the vehicle or accelerating on slippery roads
◆VGRS (Variable Gear Ratio Steering) (if equipped)
Adjusts the front wheel turning angl e in accordance with the vehicle
speed and steering wheel movement
To help enhance driving safety an d performance, the following systems
operate automatically in response to various driving situations. Be
aware, however, that these systems are supplementary and should not
be relied upon too heavily when operating the vehicle.

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GS450h_OM_OM30E26U_(U)
8-1. Specifications
This information has been prepared in accordance with regulations issued
by the National Highway Traffic Safety Administration of the U.S. Depart-
ment of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer any questions you may have as you read this
information.
■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlle d conditions on a specified govern-
ment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as well
on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their
use. Performance may differ significantly from the norm due to variations in
driving habits, service practices and differences in road characteristics and cli-
mate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire’s ability to stop on wet pavement as measured
under controlled conditions on sp ecified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.
Uniform Tire Quality Grading

635Alphabetical index
GS450h_OM_OM30E26U_(U)
Approach warningDynamic radar cruise control......246
Dynamic radar cruise control with full-speed range .................... 262
Armrest .................................................... 386
Ashtrays.....................................................377
Assist grips ................................................391
Audio input
*
Audio system*
Automatic headlight leveling system .................................................... 220
Automatic light control system......... 217
AUX port
*
Auxiliary boxes ...................................... 372
AVS (Adaptive Variable Suspension system).......................... 285
Back-up lights Replacing light bulbs ....................... 488
Wattage ................................................. 583
Battery (12-volt battery) .................... 439 If the 12-volt battery is discharged .........................................562
Preparing and checking before winter ..................................................... 319
Warning light ...................................... 504
Battery (traction battery) ......................76
Blind Spot Monitor (BSM)................. 301
Bluetooth
®*
Brake Brake Hold ............................................. 214
Fluid .......................................................... 437
Parking brake ..........................................211
Regenerative braking ..........................74
Warning light ..........................503, 506
Warning message...............................513
Brake assist ............................................. 284
Brake Hold................................................ 214
Break-in tips ............................................. 177
Brightness control Instrument panel light control ........ 93
BSM (Blind Spot Monitor) .................301 Blind Spot Monitor function.........305
Rear Cross Traffic Alert function............................................... 308
Care................................................. 408, 412 Aluminum wheels ..............................409
Exterior .................................................. 408
Interior ....................................................... 412
Seat belts.................................................. 413
Cargo capacity .......................................190
Cargo hooks ...........................................373
Caution label.............................................. 76
CD player
*
Chains ......................................................... 321
BC
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

637Alphabetical index
GS450h_OM_OM30E26U_(U)
Daytime running light system .......... 220
DefoggerFront windshield .................................345
Outside rear view mirrors ............ 360
Rear window ....................................... 360
Differential ................................................ 581
Dimensions ............................................. 574
Dinghy towing..........................................192
Display 12.3-inch display.................................. 331
Dynamic radar cruise control......240
Lexus night view ...................................312
LKA (Lane-Keeping Assist) ......... 275
Multi-information display ..................96
Trip information ..................................... 97
Warning message .............................. 513
Do-it-yourself maintenance ............. 423
Door courtesy lights Location ..................................................363
Wattage ................................................. 583
Door lock Doors ........................................................ 139
Smart access system with push-button start ..............................123
Wireless remote control ................. 136
Doors...........................................................139 Automatic door locking and unlocking system...................... 141
Door glasses ..........................................167
Door lock ................................................ 139
Open door warning buzzer........... 127
Open door warning light.............. 506
Outside rear view mirrors .............. 164
Rear door child-protector.............. 140 Driver’s seat position memory.......... 152
Driving position memory.................153
Memory recall function ................... 155
Power easy access system ............. 152
Driving ........................................................ 176 Break-in tips ........................................... 177
Correct driving posture .................... 30
Driving mode select switch ............281
Hybrid vehicle driving tips .............. 317
Procedures ............................................. 176
Winter drive tips ..................................319
DRS (Dynamic Rear Steering) ....... 285 Function ..................................................285
Warning message...............................519
DVD player
*
Dynamic radar cruise control ......... 240 Function .................................................. 240
Warning message.................. 515, 525
Dynamic radar cruise control with full-speed range Function .................................................. 255
Warning message.................. 515, 526
Dynamic Rear Steering (DRS) ....... 285 Function ..................................................285
Warning message...............................519
Eco drive mode....................................... 281
EDR (Event data recorder).....................11
Electric motor (traction motor).......... 72
Electric Power Steering (EPS) ....... 285 Function ..................................................285
Warning light .......................................504
Warning message.............................. 518
D
E
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

649Alphabetical index
GS450h_OM_OM30E26U_(U)
Talk switch*
Telephone switches*
Theft deterrent systemAlarm...........................................................83
Immobilizer system ............................... 81
Tire inflation pressure ......................... 582 Maintenance data ............................. 582
Tire inflation pressure display function ...................................................99
Warning light ...................................... 507
Warning message .............................. 531
Tire information ..................................... 587 Glossary ................................................ 594
Size ........................................................... 590
Tire identification number............. 589
Uniform Tire Quality Grading...............................................592
Tire pressure warning system ......... 445 Function ..................................................445
Initializing................................................445
Installing tire pressure warning valves and transmitters ................445
Registering ID codes ....................... 447
Tire pressure warning reset switch....................................................446
Warning light ...................................... 507
Warning message .................. 531, 532
Tires............................................................ 443 Chains........................................................321
Checking................................................443
If you have a flat tire ........................... 541
Inflation pressure ............................... 582
Information ........................................... 587 Replacing .................................................541
Rotating tires ........................................ 444
Size ...........................................................582
Snow tires .............................................. 323
Spare tire..................................................541
Tire inflation pressure display
function................................................... 99
Tire pressure warning system ..... 445
Warning light ....................................... 507
Warning message...............................531
Tools ...........................................................542
Top tether strap ....................................... 68
Total load capacity.................................190
Towing Dinghy towing ....................................... 192
Emergency towing ........................... 496
Towing eyelet ...................................... 499
Trailer towing.......................................... 191
TRAC (Traction Control)................. 284
Traction battery (hybrid battery) ....... 76
Traction motor (electric motor)......... 72
Transmission .......................................... 203 Driving mode select switch ............281
Hybrid transmission ......................... 203
If the shift lever cannot be shifted from P ...................................556
S mode.................................................... 206
Paddle shift switches........................205
Trip information ........................................ 97
Trip meters................................................... 91
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.