ECU Lexus HS250h 2010 User Guide

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1
1-4. Adjustable components (seats, mirrors, steering wheel)
Before driving
HS250h_U_75033U(Canada)
Steering wheel
∗: If equipped
The steering wheel can be adjusted to a comfortable position.
■Manual adjustment∗
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever
up to secure the steering wheel.
■Power adjustment∗
Operating the switch moves the steering wheel in the following direc-
tions:
Up
Down
Away from the driver
Toward the driver

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1-4. Adjustable components (seats, mirrors, steering wheel)
HS250h_U_75033U(Canada)
Auto tilt away
When the “POWER” switch is
turned off, the steering wheel
returns to its stowed position by
moving up and away to enable
easier driver entry and exit.
Turning the “POWER” switch to
ACCESSORY or ON mode will
return the steering wheel to the
original position.
■The steering wheel can be adjusted when
The “POWER” switch is in ACCESSORY or ON mode*.
*: Vehicles with driving position memory: If the driver’s seat belt is fastened, thesteering wheel can be adjusted regardless of “POWER” switch mode.
■Automatic adjustment of the steering position (vehicles with driving position
memory)
A desired steering position can be entered to memory and recalled automatically
by the driving position memory system. ( →P. 6 8 )
CAUTION
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an accident,
resulting in death or serious injury.
■After adjusting the steering wheel (manually adjustable type only)
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an accident,
and resulting in death or serious injury.

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1-6. Refueling
HS250h_U_75033U(Canada)
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 removing 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 any 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.

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1-8. Safety information
HS250h_U_75033U(Canada)
SRS airbag system componentsYour vehicle is equipped with ADVANCED AIRBAGS designed based
on the US motor vehicle safety standards (FMVSS208). The airbag sys-
tem controls airbag deployment power for the driver and front passen-
ger. The driver airbag system consist s 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
“A I R B A G O N ” a n d “A I R B A G OFF” indicator lights
Airbag sensor assembly
Front airbag sensors

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1-8. Safety information
HS250h_U_75033U(Canada)
CAUTION
■SRS airbag precautions
●The SRS front passenger airbag also deploys with considerable force, and can
cause death or serious injury especially if the front passenger is very close to the
airbag. The front passenger seat should be as far from the airbag as possible with
the seatback adjusted, so the front passenger sits upright.
●Improperly seated and/or restrained infants and children can be killed or seri-
ously injured by a deploying airbag. An infant or child who is too small to use a
seat belt should be properly secured using a child restraint system. Lexus strongly
recommends that all infants and children be placed in the rear seats of the vehicle
and properly restrained. The rear seats are safer for infants and children than the
front passenger seat. (→P. 121)
●If the seat belt extender has been con-
nected to the driver’s seat belt buckle but
the seat belt extender has not also been
fastened to the latch plate of the driver’s
seat belt, the SRS driver airbag system will
judge that the driver is wearing the seat belt
even though the seat belt has not been
connected. In this case, the SRS driver
airbag may not activate correctly in a colli-
sion, resulting in death or serious injury in
the event of a collision. Be sure to wear the
seat belt with the seat belt extender.

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1-8. Safety information
1
Before driving
HS250h_U_75033U(Canada)
CAUTION
■Child restraint precautions
●For effective protection in automobile accidents and sudden stops, a child must
be properly restrained, using a seat belt or child restraint system depending on
the age and size of the child. Holding a child in your arms is not a substitute for a
child restraint system. In an accident, the child can be crushed against the wind-
shield, or between you and the vehicle’s interior.
●Lexus strongly urges the use of a proper child restraint system that conforms to
the size of the child, installed on the rear seat. According to accident statistics, the
child is safer when properly restrained in the rear seat than in the front seat.
●Never install a rear-facing child restraint system on the front passenger seat even
if the “AIR BAG OFF” indicator light is illuminated. In the event of an accident, the
force of the rapid inflation of the front passenger airbag can cause death or seri-
ous injury to the child if the rear-facing child restraint system is installed on the
front passenger seat.
●A forward-facing child restraint system may be installed on the front passenger
seat only when it is unavoidable. A child restraint system that requires a top tether
strap should not be used in the front passenger seat since there is no top tether
strap anchor for the front passenger seat. Adjust the seatback as upright as possi-
ble and always move the seat as far back as possible even if the “AIR BAG OFF”
indicator light is illuminated, because the front passenger airbag could inflate with
considerable speed and force. Otherwise, the child may be killed or seriously
injured.
●Do not use the seat belt extender when installing a child restraint system on the
front or rear passenger seat. If installing a child restraint system with the seat belt
extender connected to the seat belt, the seat belt will not securely hold the child
restraint system, which could cause death or serious injury to the child or other
passengers in the event of a sudden stop, sudden swerve or accident.
●Do not allow the child to lean his/her head or any part of his/her body against the
door or the area of the seat, front and rear pillars or roof side rails from which the
SRS side airbags or SRS curtain shield airbags deploy even if the child is seated in
the child restraint system. It is dangerous if theSRS side airbags and curtain shield
airbags inflate, and the impact could cause death or serious injury to the child.

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1-8. Safety information
HS250h_U_75033U(Canada)
CAUTION
■Child restraint precautions
●Make sure you have complied with all installation instructions provided by the
child restraint manufacturer and that the system is properly secured. If it is not
secured properly, it may cause death or serious injury to the child in the event of a
sudden stop, sudden swerve or accident.
■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 injuries that could result in death.
If this occurs and the buckle cannot be unfastened, scissors should be used to cut
the belt.
■When the child restraint system is not in use
●Keep the child restraint system properly secured on the seat even if it is not in use.
Do not store the child restraint system unsecured in the passenger compartment.
●If it is necessary to detach the child restraint system, remove it from the vehicle or
store it securely in the trunk. This will prevent it from injuring passengers in the
event of a sudden stop, sudden swerve or accident.

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1
1-8. Safety information
Before driving
HS250h_U_75033U(Canada)
Installing child restraints
Follow the child restraint system manufacturer’s instructions. Firmly
secure child restraints to the seats using the LATCH anchors or a seat belt.
Attach the top tether strap when installing a child restraint.
The lap/shoulder belt can be used if your child restraint system is not com-
patible with the LATCH (Lower Anchors and Tethers for Children) system.
Child restraint LATCH anchors
LATCH anchors are provided
for the outer rear seats. (Buttons
displaying the location of the
anchors are attached to the
seats.)
Seat belts equipped with a child
restraint locking mechanism
(ALR/ELR belts except driver’s
seat belt) (→P. 7 3 )
Anchor brackets (for top tether
strap)
An anchor bracket is provided
for each rear seat.

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1-8. Safety information
1
Before driving
HS250h_U_75033U(Canada)Fully extend the shoulder belt and
then allow it to retract slightly in
order to activate the ALR lock
mode.
Lock mode allows the seat belt to
retract only.
While pushing the child restraint
system down into the rear seat,
allow the shoulder belt to retract
until the child restraint system is
securely in place.
After the shoulder belt has
retracted to a point where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
■
Forward-facing  Convertible seat
Remove the head restraint.
Place the child restraint system on
the seat facing the front of the vehi-
cle.

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1-8. Safety information
HS250h_U_75033U(Canada)Run the seat belt through the child
restraint system and insert the
plate into the buckle. Make sure
that the belt is not twisted.
Fully extend the shoulder belt and
then allow it to retract slightly in
order to activate the ALR lock
mode.
Lock mode allows the seat belt to
retract only.
While pushing the child restraint
system into the rear seat, allow the
shoulder belt to retract until the
child restraint system is securely in
place.
After the shoulder belt has
retracted to a point where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
If the child restraint has a top tether strap, the top tether strap
should be latched onto the top tether strap anchor. (
→P. 132)