2010 Lexus HS250h power steering

5
When trouble arises
509
5-2. Steps to take in an emergency
HS250h_U_75033U(Canada)
(Flashes)
(If equipped)
Indicates that your vehi-
cle is nearing the vehicle
ahead (in radar cruise
mode)
A buzzer also sounds.
At the same time,
will appear on
the head-up display (the
image flashes).
Slow the vehicle by apply-
ing the brakes.
(Flashes)
(If equipped)
Indicates a malfunction in
the LKA system A buzzer also sounds.Restart the hybrid system
and then reactivate the
lane keeping assist system.
Indicates that the LKA is
suspendedA buzzer also sounds.
•The camera sensor temperature is higher
than the operation tem-
perature range.
• The power steering
system operation is
restricted.
Reactivate the lane keep-
ing assist system.
Wa r n i n g m e s s a g eDetailsCorrection procedure

510
5-2. Steps to take in an emergency
HS250h_U_75033U(Canada)
Alerts the driver that the
vehicle is out of the lanes
(while the LKA system is
operating).A buzzer also sounds.
The lane markings and/
or the steering wheel
marking flash.
At the same time,
will appear on
the head-up display (the
image flashes).
Check the road condi-
tions and drive the vehicle
at a safe speed.
Indicates that the hybrid
system has overheated A buzzer also sounds.Stop and check.
(→ P. 5 4 1 )
(Flashes)
Indicates that the traction
battery is low
The warning buzzer
sounds intermittently.
When stopping the vehi-
cle for a long period of
time, change the shift
position to P. The battery
cannot be charged with
the shift position in N.
(Flashes)
Indicates that the traction
battery power has
dropped because a long
period of time has
elapsed after changing
the shift position to NThe warning buzzer
sounds continuously.
Restart the hybrid system
when starting the vehicle.
Wa r n i n g m e s s a g eDetailsCorrection procedure

5
When trouble arises
547
5-2. Steps to take in an emergency
HS250h_U_75033U(Canada)
If your vehicle has to be stopped in an emergency
CAUTION
■If the hybrid system has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as
possible before turning off the hybrid system.
Only in an emergency, such as if it becomes impossible to stop the vehicle
in the normal way, stop the vehicle using the following procedure:
Steadily step on the brake pedal with both feet and firmly
depress it.
Do not pump the brake pedal repeatedly as this will increase the
effort required to slow the vehicle.
Change the shift position to N.
If the shift position can be changed to N After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system.
If the shift position cannot be changed to N Keep depressing the brake pedal with both feet to reduce vehi-
cle speed as much as possible.
Stop the hybrid system by press-
ing and holding the “POWER”
switch for 3 consecutive sec-
onds or more.
Stop the vehicle in a safe place by the road.

568
6-1. Specifications
HS250h_U_75033U(Canada)
Warning: The temperature grades of a tire assume that it is properly inflated
and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows

592
HS250h_U_75033U(Canada)
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/CAir Conditioning
ABSAnti-lock Brake System
AFSAdaptive Front-lighting System
ALRAutomatic Locking Retractor
CALCalibration
CRSChild Restraint System
ECOEconomy/Ecology
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
GAWRGross Axle Weight Ratings
GPSGlobal Positioning System
GVWRGross Vehicle Weight Rating
HUDHead-up Display
I/MEmission Inspection and Maintenance
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
LKALane-Keeping Assist
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
PCSPre-Collision System
SRSSupplemental Restraint System

596
Alphabetical index
HS250h_U_75033U(Canada)
Clock (vehicles withoutnavigation system) ............................ 373
Clock (vehicles with navigation system)*
Coin holder .............................................366
Compass ................................................... 391
Condenser ..............................................430
Console box ...........................................365
Cooling system Engine overheating ............................541
Cruise control Cruise control .......................................201
Dynamic radar cruise control .....205
Cup holders ............................................ 367
Curtain shield airbags.......................... 104
Customizable features ....................... 574
Daytime running light system ........... 186
Defogger Rear window........................................260
Side mirrors ..........................................260
Dimensions............................................. 550
Dinghy towing ........................................248
Display
Dynamic radar cruise control..................................................205
Multi-information display.................169
Trip information .................................... 172
Warning message.............................. 501
Do-it-yourself maintenance .............. 416
Door courtesy lights Door courtesy lights.........................360
Wattage................................................. 558
Doors
Door glasses ........................................... 86
Door lock.................................44, 54, 57 Rear door child protector................ 58
Side doors................................................. 57
Side mirrors............................................. 83
Driver’s seat belt reminder light ..... 495
Driver’s seat position memory ........... 68
Driving
Break-in tips........................................... 137
Correct posture................................... 102
Procedures............................................. 136
Winter driving tips .............................244
Driving position memory...................... 68
Electric power steering...................... 225
Electronic key If the electronic key does not operate properly............................ 533
Emergency, in case of If the electronic key does not
operate properly............................ 533
If the engine will not start ............... 530
If the hybrid system will not start ....................................................... 530
If the 12-volt battery is discharged ........................................ 536
If the warning buzzer sounds.......492
If the warning light turns on...........492
If the warning message is displayed ..............................................501
If you have a flat tire .......................... 521
If you lose your keys ........................ 532
If you think something is wrong .................................................. 489
If your electronic key does not operate properly ................... 533
If your vehicle becomes stuck .... 545
D
E

601
Alphabetical index
HS250h_U_75033U(Canada)
Seat beltsAdjusting the seat belt ........................ 74
Automatic Locking Retractor .........75
Child restraint system
installation ............................................ 125
Cleaning and maintaining
the seat belt....................................... 407
Emergency Locking Retractor .....75
How to wear your seat belt..............73
How your child should wear
the seat belt...........................................75
Pre-collision seat belts.....................232
Pregnant women, proper seat belt use..........................75
Reminder light..................................... 495
Seat belt extenders ...............................76
Seat belt pretensioners....................... 74
Seat heaters.............................................375
Seat position memory ........................... 68
Seat ventilator.........................................375
Seating capacity ....................................243
Seats
Adjustment .................................... 64, 68
Adjustment precautions .................................. 67, 70
Child seats/child restraint
system installation ............................ 125
Cleaning ................................................ 406
Driver’s seat position memory ................................................. 68
Head restraint ...........................................71
Properly sitting in the seat............... 102
Seat heaters.......................................... 375
Seat position memory ........................ 68
Ventilated seats .................................. 375 Service reminder indicators ............. 165
Shift lever
Transmission.......................................... 153
Side airbags.............................................. 104
Side marker lights Replacing light bulbs ....................... 469
Switch........................................................ 183
Wattage................................................. 558
Side mirrors Adjusting and folding..........................83
Mirror position memory....................68
Side turn signal lights
Replacing light bulbs ........................ 479
Wattage................................................. 558
Smart access system with push-button start
Antenna location ................................... 46
Entry functions........................................ 44
Starting the engine ............................. 145
Starting the hybrid system .............. 145
Smart entry & start system Antenna location ................................... 46
Entry function .......................................... 44
Starting the engine ............................. 145
SOS button .............................................395
Spare tire Inflation pressure................................557
Storage location .................................. 521
Spark plug................................................554
Specifications ........................................ 550
Speedometer .......................................... 162
Steering wheel Adjustment ............................................... 79
Audio switches................................... 308
Manual adjustment............................... 79
Power adjustment................................. 79
*: Refer to “Navigation System Owner’s Manual”.

602
Alphabetical index
HS250h_U_75033U(Canada)
Steering wheel position memory.................................................. 68
Stop light Replacing light bulbs........................ 479
Wattage................................................. 558
Storage feature......................................363
Stuck If the vehicle becomes stuck........545
Sun visors .................................................. 371
Sunshade Rear .......................................................... 378
Roof ............................................................. 89
Switch Audio remote control switch *
Driving mode selector switch .................................................... 155
Engine switch.........................................145
Fog light switch.....................................194
Ignition switch........................................145
Light switches ....................................... 183
Mode select switch............................ 155
OPEN CLOSE switch *
Power door lock switch .................... 57
Power switch .........................................145
Power window switch ........................ 86
Talk switch (vehicles without navigation system)............. 314, 333
Talk switch (vehicles with
navigation system) *
Telephone switch (vehicles
without navigation system) ....... 333
Telephone switch (vehicles
with navigation system)*
TILT switch*
Tire pressure warning reset switch ................................................... 439
Window lock switch ........................... 86 Wiper and washer switch............... 195
Tail lights Replacing light bulbs ........................479
Switch ........................................................ 183
Wattage .................................................558
Talk switch (vehicles without navigation system) .................. 314, 333
Talk switch (vehicles with navigation system)*
Telephone switch (vehicles without navigation system)............ 333
Telephone switch (vehicles with navigation system)*
Theft deterrent system Alarm.......................................................... 98
Immobilizer system ..............................96
Theft prevention labels.......................... 101
TILT switch*
Tire inflation pressure ......................... 445
Tire information Glossary ................................................568
Size ........................................................... 565
Tire identification number ............. 564
Uniform Tire Quality Grading ... 566
Tires
Chains..................................................... 245
Checking................................................437
Compact spare tire............................ 521
If you have a flat tire ........................... 521
Inflation pressure ............................... 445
Inflation pressure sensor ............... 438
Information ........................................... 562
Replacing ................................................ 521
Rotating tires.........................................437
Size ........................................................... 557
T