ignition Lexus HS250h 2010 Scheduled Maintenance Guide / LEXUS 2010 HS250H OWNERS MANUAL (OM75006U)

TABLE OF CONTENTSIndex
2
1-1. Hybrid systemHybrid system ................................... 24
Hybrid system precautions ......... 27
Energy monitor/consumption screen................................................ 32
Hybrid vehicle driving tips........... 37
1-2. Key information Keys ...................................................... 39
1-3. Opening, closing and locking 
the doors
Smart access system with  push-button start .......................... 44
Wireless remote control .............. 54
Doors.................................................... 57
Trunk..................................................... 60
1-4. Adjustable components (seats, mirrors, steering wheel)
Front seats .......................................... 64
Driving position memory 
(driver’s seat) ................................. 68
Head restraints................................... 71
Seat belts ............................................ 73
Steering wheel.................................. 79
Inside rear view mirror................... 81
Outside rear view mirrors .......... 83 1-5. Opening and closing the windows
and moon roof
Power windows................................ 86
Moon roof .......................................... 89
1-6. Refueling Opening the fuel tank cap........... 92
1-7. Theft deterrent system Immobilizer system ........................ 96
Alarm.................................................... 98
Theft prevention labels 
(for U.S.A.) .................................... 100
1-8. Safety information Correct driving posture .............. 101
SRS airbags ..................................... 103
Front passenger occupant 
classification system .................... 115
Child restraint sy stems ............... 120
Installing child restraints ............. 124
2-1. Driving procedures Driving the vehicle ........................ 136
Power (ignition) switch ............... 145
EV drive mode ............................... 150
Hybrid transmission ..................... 153
Turn signal lever............................. 159
Parking brake ................................. 160
1Before driving
2When driving

14
Pictorial indexInstrument panel
Headlight switch Turn signal lever Fog light switch P. 183
P. 159
P. 194
Tilt and telescopic steering
control switch
 P. 79
Pre-collision brake off switch  P. 233
Parking brake pedal P. 160
EV drive mode switch
Eco mode switch
Power mode switch P. 150
P. 155
P. 155
Hood lock release lever P. 419
Tilt and telescopic steering control lever  P. 79
Glove box P. 364
Trunk opener 
main switch
P. 60
Power (ignition) switch P. 145
Windshield wipers and
washer switch
P. 195
Gauges and meters 
Multi-information display P. 162
P. 169
Audio system *2P. 262

94
1-6. Refueling
CAUTION
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so may
result in death or serious injury.
●After exiting the vehicle and before opening the fuel door, touch an unpainted
metal surface to discharge any static electricity. It is important to discharge static
electricity before refueling because sparks resulting from static electricity can
cause fuel vapors to ignite while refueling.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it. 
A whooshing sound may be heard when the fuel tank cap is loosened. Wait until
the sound cannot be heard before fully re moving the cap. In hot weather, pressur-
ized fuel may spray out of the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their body to
come close to an open fuel tank.
●Do not inhale vaporized fuel. 
Fuel contains substances that are harmful if inhaled.
●Do not smoke while refueling the vehicle. 
Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch an y person or object that is statically
charged. 
This may cause static electricity to build up , resulting in a possible ignition hazard.
■When refueling
Securely insert the fuel nozzle into the fuel filler neck. If fuel is added with the nozzle
slightly lifted away from the fuel filler neck, the automatic shut off function may not
operate, resulting in fuel overflowing from the tank.
■When replacing the fuel cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle.
Doing so may cause a fire or other incident which may result in death or serious
injury.

When driving2
135
2-1. Driving proceduresDriving the vehicle.................. 136
Power (ignition) switch .......... 145
EV drive mode.......................... 150
Hybrid transmission ............... 153
Turn signal lever ....................... 159
Parking brake ........................... 160
Horn ............................................. 161
2-2. Instrument cluster Gauges and meters ................ 162
Indicators and warning 
lights ......................................... 165
Multi-information display ..... 169
Head-up display ...................... 175
2-3. Operating the lights and windshield wipers
Headlight switch...................... 183
Automatic High Beam .......... 188
Fog light switch ........................ 194
Windshield wipers and 
washer ..................................... 195
Headlight cleaner switch.... 200 2-4. Using other driving systems
Cruise control.......................... 201
Dynamic radar cruise 
control .................................... 205
LKA 
(Lane-Keeping Assist) ........ 217
Driving assist systems ........... 225
Hill-start assist control ......... 230
Pre-Collision System ............ 232
2-5. Driving information Cargo and luggage ............... 240
Vehicle load limits .................. 243
Winter driving tips ................. 244
Trailer towing ........................... 247
Dinghy towing ......................... 248

145
2-1. Driving procedures
2
When driving
Power (ignition) switch
Performing the following operations when carrying the electronic key on
your person starts the hybrid system or changes “POWER” switch modes.
■Starting the hybrid system
Check that the parking brake is set.
Firmly depress the brake pedal.
The “POWER” switch indicator will turn green. If the indicator does
not turn green, the hybrid system cannot be started.
When shift position N is selected, the hybrid system cannot start.
Select the P position when star
ting the hybrid system.
Press the “POWER” switch.
After a while, the “READY” indi -
cator comes on with a beep
sound.
The vehicle can move when the
“READ
Y” indicator is on even if
the engine is stopped.
Continue depressing the brake
pedal
until the hybrid system is
completely started.
The hybrid system can be
star
ted from any mode.

323
3-3. Using the Bluetooth® audio system
3
Interior features
Registering a portable player
Select “Pair Audio Player (Pair Audio)” using a voice command or , and perform the procedure for r
egistering a portable player.
(  P. 316 )
Selecting a portable player to be used
Select “Connect Audio Player (Connect)” using a voice com-
mand or .
Select the portable player to be used b
y either of the following
methods, and select “Confirm” b
y using a voice command or
:
a. Press the talk switch and say the name of the desir
ed portable
player.
b. Press the talk switch and sa y “List A
udio Players”. When the
name of the desired portable pl ayer is read aloud, press the
talk switch.
Press the talk switch and say “From Car” or “From Audio player”,
and select “Confirm” by using a voice command or .
If “From Car” is selected, the portable player will be automatically con -
nected whenever the “POWER” switch is in either ACCESSORY or
IGNITION ON
mode.

552
6-1. Specifications
Cooling system
Ignition system
CapacityGasoline engine
Power control unit
7.7 qt. (7.3 L, 6.4 Imp. qt.)
3.1 qt. (2.9 L, 2.6 Imp. qt.)
Coolant type
Use either of the following.• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make 

GapDENSO SK20R11 
NGK IFR6A11 
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust spark plug gap.

595
Alphabetical index
Electric power steering ......................225
Electronic keyIf 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
If your vehicle needs to be  towed ................................................... 483
If your vehicle overheats.................. 541
Emergency flasher Switch ...................................................... 482 Engine
Accessory mode................................. 148
Compartment...................................... 422
Engine switch .........................................147
Hood ......................................................... 419
How to start the engine ....................147
How to start the hybrid 
system ....................................................147
Identification number ...................... 548
If the engine will not start............... 530
If the hybrid system will not 
start ....................................................... 530
Ignition switch ........................................147
Overheating .......................................... 541
Power switch..........................................147
Engine compartment cover ............. 423
Engine coolant Capacity .................................................552
Checking ...............................................428
Preparing and checking before winter .................................... 244
Engine/power control unit coolant Capacity .................................................552
Checking ...............................................428
Preparing and checking before winter .................................... 244
Engine immobilizer system.................. 96E

597
Alphabetical index
Hands-free system 
(for cellular phone)........................... 328
Head restraints Adjustment ................................................71
Headlights aim ....................................... 467
Headlights cleaner .............................. 200
Headlights Adaptive front lighting 
system................................................... 185
Discharge headlights 
precautions .......................................480
Replacing light bulbs ....................... 469
Switch ........................................................183
Wattage ................................................. 556
Heaters Seat heaters.......................................... 375
Side mirrors.......................................... 260
Hill-start assist control ....................... 230
Hood ........................................................... 419
Hooks Grocery bag..........................................381
Horn............................................................. 164
Hybrid system Emergency shut off system ............. 28
Energy monitor/ 
consumption ........................................32
Engine switch ........................................ 147
High voltage components ................ 27
Hybrid system indicators.................165
Ignition switch........................................ 147
Power switch ......................................... 147 I/M test....................................................... 415
Identification
Electric motor ..................................... 549
Engine..................................................... 549
Vehicle ................................................... 548
Ignition switch...........................................147
Illuminated entry system ....................360
Immobilizer system ................................. 96
Indicator lights......................................... 165
Initialization Items to initialize ................................ 584
Inside rear view mirror ........................... 81
Instrument panel light control .......... 163
Interior lights Interior lights ........................................ 360
Switch........................................................ 361
Wattage ................................................. 556
Intuitive parking assist*
Jack Positioning the jack ...........................420
Vehicle-equipped jack .................... 521
Jack handle............................................... 521HI
J
*: Refer to “Navigation System Owner’s Manual”.

601
Alphabetical index
Steering wheelAdjustment ...............................................79
Audio switches ...................................308
Manual adjustment ...............................79
Power adjustment .................................79
Steering wheel position 
memory ................................................. 68
Stop light Replacing light bulbs ....................... 479
Wattage ................................................. 556
Storage feature ..................................... 363
Stuck If the vehicle becomes stuck ....... 545
Sun visors................................................... 371
Sunshade Rear .......................................................... 378
Roof ............................................................. 89
Switch Driving mode selector 
switch .................................................... 158
Engine switch ........................................ 147
Fog light switch..................................... 194
Ignition switch........................................ 147
Light switches........................................183
Mode select switch ........................... 158
Power door lock switch .....................57
Power switch ......................................... 147
Power window switch........................ 86
Tire pressure warning reset 
switch ................................................... 439
Window lock switch ........................... 86
Wiper and washer ..............................195 Tail lights
Replacing light bulbs ........................ 479
Switch........................................................ 183
Wattage ................................................. 556
Talk switch .....................................314, 333
Telephone switch ..................................333
Theft deterrent system Alarm...........................................................98
Immobilizer system ..............................96
Theft prevention labels ........................ 100
Tire inflation pressure ......................... 445
Tire information Glossary ................................................ 566
Size ........................................................... 563
Tire identification number..............562
Uniform Tire Quality Grading ... 564
Tires Chains .....................................................245
Checking ............................................... 437
Compact spare tire ........................... 521
If you have a flat tire ........................... 521
Inflation pressure ................................445
Inflation pressure sensor ............... 438
Information ........................................... 560
Replacing ................................................ 521
Rotating tires ........................................ 437
Size ........................................................... 555
Snow tires .............................................. 244
Spare tire ................................................. 521
Tire pressure warning 
system ......................................437, 495
Tools ............................................................ 521
Total load capacity ............................... 243T