warning light Lexus HS250h 2011 Hybrid system / LEXUS 2011 HS250H OWNERS MANUAL (OM75037U)

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1-8. Safety informationCorrect driving posture ............. 104
SRS airbags ..................................... 106
Front passenger occupant classification sy stem ................... 118
Child restraint systems ............... 123
Installing child re straints .............. 127
2-1. Driving procedures Driving the vehicle ........................ 138
Power (ignition) switch ............... 147
EV drive mode ............................... 152
Hybrid transmission ..................... 155
Turn signal lever .............................. 161
Parking brake ................................. 162
Horn.................................................... 163
2-2. Instrument cluster Gauges and meters ..................... 164
Indicators and warning lights................................................. 168
Multi-information display............ 172
Head-up display ............................ 178 2-3. Operating the lights and
windshield wipers
Headlight switch ............................ 186
Automatic High Beam .................. 191
Fog light switch .............................. 197
Windshield wipers and washer ............................................ 198
Headlight cleaner switch .......... 203
2-4. Using other driving systems Cruise control ............................... 204
Dynamic radar cruise control........................................... 208
LKA (Lane-Keeping Assist) ..... 221
Driving assist systems................. 229
Hill-start assist control ............... 234
Pre-Collision System.................. 236
2-5. Driving information Cargo and luggage ..................... 245
Vehicle load limits ........................ 248
Winter driving tips ....................... 249
Trailer towing ................................. 252
Dinghy towing ............................... 253
2When driving

TABLE OF CONTENTSIndex
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5-1. Essential informationEmergency flashers.................... 488
If your vehicle needs to be towed ...................................... 489
If you think something is wrong ............................................. 495
Event data recorder .................... 496
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ........................................ 498
If a warning message is displayed ....................................... 507
If you have a flat tire..................... 527
If the hybrid system will not start ................................................. 537
If you lose your keys ................... 539
If the electronic key does not operate properly .............. 540
If the vehicle 12-volt battery is discharged ............................... 543
If your vehicle overheats .......... 548
If the vehicle becomes stuck................................................ 552
If your vehicle has to be stopped in
an emergency ............................ 554 6-1. Specifications
Maintenance data (fuel, oil level, etc.).................... 556
Fuel information ........................... 565
Tire information............................ 568
6-2. Customization Customizable features.............. 580
6-3. Initialization Items to initialize ........................... 592
Reporting safety defects for U.S. owners........................... 594
Seat belt instructions for Canadian owners
(in French) ................................... 595
SRS airbag instructions for Canadian owners
(in French) .................................... 597
5When trouble arises6Vehicle specifications
7For owners

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1-1. Hybrid system
■If a warning light comes on, a warning message is displayed, or the 12-volt battery
is disconnected
The hybrid system may not start. In that case, try to start the system again. If the
“READY” indicator does not come on, contact your Lexus dealer.
■Electromagnetic waves
●High voltage parts and cables on the hybrid vehicles incorporate electromag-
netic shielding, and theref ore emit approximately the same amount of electro-
magnetic waves as conventional gasoline powered vehicles or home electronic
appliances.
●Your vehicle may cause sound interference in some third party-produced radio
parts.
■Running out of fuel
When the vehicle has run out of fuel and th e hybrid system cannot be started, refuel
the vehicle with at least enough gasoline to make the low fuel level warning light
(  P. 501) go off. If there is only a small amount of fuel, the hybrid system may not
be able to start. (The minimum amount of fuel to add to make the low fuel level
warning light go out is about 2.6 gal. [10 L, 2.1 Imp.gal.], when the vehicle is on a
level surface. This value may vary when the vehicle is on a slope.)
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of the
hybrid battery (traction battery) can chan ge in accordance with driving style and
driving conditions.

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1-4. Adjustable components (seats, mirrors, steering wheel)
CAUTION
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, wh ich prevents the sensor from detecting
the passenger’s weight properly. As a resu lt, the seat belt pretensioner for the
front passenger’s seat may not activate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.
■Adjustable shoulder anchor
Always make sure the shoulder belt is positioned across the center of your shoul-
der. The belt should be kept away from yo ur neck, but not falling off your shoulder.
Failure to do so could reduce the amount of protection in an accident and cause
death or serious injuries in the event of a sudden stop, sudden swerve or accident.
(  P. 7 5 )
■Child restraint lock function belt precaution
Do not allow children to play with the child restraint lock function belt. If the belt
becomes twisted around a child’s neck, it will not be possible to pull the belt out
leading to choking or other serious in juries that could result in death.
If this occurs and the buckle cannot be un fastened, scissors should be used to cut
the belt.
■Seat belt damage and wear
●Do not damage the seat belts by allowing the belt, plate, or buckle to be jammed
in the door.
●Inspect the seat belt system periodically. Check for cuts, fraying, and loose parts.
Do not use a damaged seat belt until it is replaced. Damaged seat belts cannot
protect an occupant from death or serious injury.
●Ensure that the belt and plate are locked and the belt is not twisted.
If the seat belt does not function co rrectly, immediately contact your Lexus
dealer.
●Replace the seat assembly, including the belt s, if your vehicle has been involved in
a serious accident, even if there’s no obvious damage.
●Do not attempt to install, remove, modify, disassemble or dispose of the seat belts.
Have any necessary repairs carried out by your Lexus dealer. Inappropriate han-
dling of the pretensioner may prevent it from operating properly, resulting in
death or serious injury.

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1-5. Opening and closing the windows and moon roof
■When the moon roof does not close normally
Perform the following procedure:
●If the moon roof closes but then re-opens lightlyStop the vehicle.
Press and hold the “CLOSE” switch.*
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The moon roof will close, reopen and pause for approximately 10 sec-
onds.*2 Then it will close again, tilt up and pause for approximately 1 sec-
ond. Finally, it will tilt down, open and close.
Check to make sure that the moon roof is completely closed and then
release the switch.
●If the moon roof tilts down but then tilts back up
Stop the vehicle.
Press and hold the “UP” switch*
1 until the moon roof moves into the tilt up
position and stops.
Release the “UP” switch once and th en press and hold the “UP” switch
again.*
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The moon roof will pause for approximately 10 seconds in the tilt up posi-
tion.*2 Then it will adjust slightly and pause for approximately 1 second.
Finally, it will tilt down, open and close.
Check to make sure that the moon roof is completely closed and then
release the switch.
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1: If the switch is released at the incorrect time, the procedure will have to be performed again from the beginning.
*
2: If the switch is released after the above mentioned 10 second pause, automatic operation will be disabled. In that case, press and hold the
“CLOSE” or “UP” switch, and the moon roof will tilt up and pause for
approximately 1 second. Then it will tilt down, open and close. Check to
make sure that the moon roof is completely closed and then release
the switch.
If the moon roof does not fully close even after performing the above procedure
correctly, have the vehicle inspected by your Lexus dealer.
■Moon roof open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the
instrument cluster when the “POWER” switch is turned off and the driver’s door is
opened with the moon roof open.

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1-8. Safety information
SRS airbag system componentsYour vehicle is equipped with AD VANCED AIRBAGS designed based
on the US motor vehicle safety st andards (FMVSS208). The airbag sys-
tem controls airbag deployment power for the driver and front passen-
ger. The driver airbag system consists of the driver’s seat position sensor
etc. The front passenger’s airbag system consists of the front passenger
occupant classification sensor etc. Occupant detection system
(ECU and sensors)
Front passenger’s seat belt
buckle switch
Knee airbags
Front passenger airbag
Curtain shield airbags
Front side airbags
Side and curtain shield airbag
sensors
Curtain shield and rear side
airbag sensors
SRS warning light
Rear side airbags
Driver airbag
Driver’s seat belt buckle switch
Driver’s seat position sensor
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Airbag sensor assembly
Front airbag sensors

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1-8. Safety information
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the conditions of the front passenger seat and
activates or deactivates the devices for the front passenger.
SRS warning light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Front passenger’s seat belt reminder light
Without
navigation system
With navigation system

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1-8. Safety information
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Before driving
Condition and operation in the front passenger occupant classification system
■Adult*1
■Child *3 or child restraint system*4
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
ON”
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag
Activated
Side airbag on the front passenger seatCurtain shield airbag in the front passenger side
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”
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SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag Deactivated
Side airbag on the front passenger seat ActivatedCurtain shield airbag in the front passenger side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

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1-8. Safety information
■Unoccupied
■ There is a malfunction in the system
*1: The system judges a person of adult size as an adult. When a smaller
adult sits in the front passenger seat, the system may recognize him/
her as a child depending on his/her physique and posture.
*2: In the event the front passenger does not wear a seat belt.
*3: When a larger child who has outgrow n a child restraint system sits in
the front passenger seat, the system may recognize him/her as an
adult depending on his/her physique or posture.
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lightsNot illuminated
SRS warning light Off
Front passenger’s seat belt reminder light
Devices Front passenger airbag Deactivated
Side airbag on the front passenger seat Activated
Curtain shield airbag in the front passenger side
Front passenger knee airbagDeactivated
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front passenger airbag Deactivated
Side airbag on the front passenger seat Activated
Curtain shield airbag in the front passenger side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

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1-8. Safety information
CAUTION
■Front passenger occupant classification system precautions
●Do not recline the front passenger seatback so far that it touches a rear seat. This
may cause the “AIR BAG OFF” indicator ligh t to be illuminated, which indicates
that the passenger’s airbags will not deploy in the event of a severe accident. If the
seatback touches the rear se at, return the seatback to a position where it does
not touch the rear seat. Keep the front pa ssenger seatback as upright as possible
when the vehicle is moving. Reclining the seatback excessively may lessen the
effectiveness of the seat belt system.
●If an adult sits in the front passenger se at, the “AIR BAG ON” indicator light is illu-
minated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit
up straight, well back in the seat, feet on the floor, and with the seat belt worn cor-
rectly. If the “AIR BAG OFF” indicator still remains illuminated, either ask the pas-
senger to move to the rear seat, or if th at is not possible, move the front passenger
seat fully rearward.
●When it is unavoidable to install a forward-facing child restraint system on the
front passenger seat, install the child rest raint system on the front passenger seat
in the proper order. ( P. 1 2 7 )
●Do not modify or remove the front seats.
●Do not kick the front passenger seat or subject it to severe impact. Otherwise,
the SRS warning light may come on to indicate a malfunction of the detection sys-
tem. In this case, contact your Lexus dealer immediately.
●Child restraint systems installed on the rear seat should not contact the front seat-
backs.
●Do not use a seat accessory, such as a cushion and seat cover, that covers the
seat cushion surface.
●Do not modify or replace the upholstery of the front seat.