2008 LEXUS RX400H ECU

15
Without navigation system
With navigation system
∗: If equipped
*: Refer to “Navigation System Owner's Manual”.
Security indicator

P. 83, 85
Audio system

P. 205
Multi-display light
control button
P. 276
●Trip information display
● Outside temperature
display
● Clock
● Automatic air condi-
tioning display
P. 146
P. 275
P. 274
P. 198
Audio system*
Air conditioning
system
*
Rear view monitor/
navigation system
*
Multi-display
Trip information display
control button
P. 146
Air conditioning system
P. 198
Rear window and outside
rear view mirror defog-
gers, and windshield wip-
er de-icer
∗ P. 204
Rear window and outside
rear view mirror defog-
gers, and windshield wip-
er de-icer
∗ P. 204
Security indicator
P. 83, 85
A

37
1-3. Opening, closing and locking the doors
1
Before driving
RX400h_U
■Back door operation
The back door can be opened even if it is locked. Lock the back door again when
you leave the vehicle. The back door will not lock automatically after it has been
opened and then closed.
■Operation signals
Side doors: A buzzer sounds and the emergency flashers flash to indicate that the doors have been locked/unlocked. (Locked: Once; Unlocked: Twice)
Back door: A buzzer sounds twice and the emergency flashers flash twice to indi- cate that the back door has been opened/closed.
Windows and moon roof: A buzzer sounds to indicate that the windows and moon
roof are operating.
■Door lock buzzer
If a door is not fully closed, a buzzer sounds continuously if an attempt to lock the
door is made. Fully close the door to stop the buzzer, and lock the vehicle once
more.
■Security feature
If a door is not opened within approximately 60 seconds after the vehicle is
unlocked, the anti-theft system automatically locks the vehicle again.
■Battery depletion
→ P. 3 4 8
■Customization that can be configured at Lexus dealer
Settings (e.g. door unlocking function) can be changed. (Customizable features
→P. 4 5 8 )
■Reversing the operation of the power back door
Pressing the wireless remote control switch again while the power back door is
operating will cause the operation to reverse. However, the reverse operation can-
not be performed for the first second after automatic operation starts, even if the
wireless remote control switch is pressed again.

62
1-4. Adjustable components (seats, mirrors, steering wheel)
RX400h_U
■People suffering illness
Obtain medical advice and wear the seat belt in the proper way. ( →P. 5 8 )
■Child seat belt usage
The seat belts of your vehicle were principally designed for persons of adult size.
●Use a child restraint system appropriate for the child, until the child become large
enough to properly wear the vehicle's seat belt. ( →P. 1 0 8 )
●When the child becomes large enough to properly wear the vehicle's seat belt,
follow the instructions on P. 58 regarding seat belt usage.
■Replacing the belt after the pr etensioner has been activated
If the vehicle is involved in multiple collisions, the pretensioner will activate for the
first collision, but will not activate for the second or subsequent collisions.
■Seat belt extender
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
●Always wear a seat belt properly.
●Each seat belt should be used by one person only. Do not use a seat belt for more
than one person at once, including children.
●Lexus recommends that children be seated in the rear seat and always use a seat
belt and/or an appropriate child restraint system.
If your seat belts cannot be fastened securely
because they are not long enough, a person-
alized seat belt extender is available from
your Lexus dealer free of charge.

64
1-4. Adjustable components (seats, mirrors, steering wheel)
RX400h_U
CAUTION
●Replace the seat assembly, including the belts, 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.
■Using a seat belt comfort guide
●Make sure the belt is not twisted and that it lies flat. The elastic cord must be
behind the belt and the guide must be on the front.
●To reduce the chance of injury in case of an accident or a sudden stop while driv-
ing, remove and store the comfort guide in its pocket when it is not in use.
●Always make sure the shoulder belt is positioned across the center of the shoul-
der. The belt should be kept away from the neck, and should not fall off the shoul-
der.
Failure to observe these precautions could reduce the effectiveness of the seat
belt in an accident, causing death or serious injury.
■Using a seat belt extender
●Do not wear the seat belt extender if you can fasten the seat belt without the
extender.
●Do not use the seat belt extender when installing a child restraint system because
the belt will not securely hold the child restraint system, increasing the risk of
death or injury in the event of a collision.
●The personalized extender may not be safe on another vehicle, when used by
another person, or at a different seatin g position other than the one originally
intended.
NOTICE
■When using a seat belt extender
When releasing the seat belt, press on the buckle release button on the extender,
not on the seat belt.
This helps prevent damage to the vehicle interior and the extender itself.

65
1
1-4. Adjustable components (seats, mirrors, steering wheel)
Before driving
RX400h_U
Steering wheel (manually adjustable type)
CAUTION
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and an accident, resulting in
death or serious injury.
■After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an accident.
The steering wheel can be adjusted to a comfortable position.
Hold the steering wheel
and pull up the lever.
Adjust to the ideal posi-
tion by moving the
steering wheel.
Release the lever. STEP1
STEP2
STEP3

71
1-4. Adjustable components (seats, mirrors, steering wheel)
1
Before driving
RX400h_U
CAUTION
■Cross rail adjustment
Make sure the cross rails are locked securely by pushing forward and rearward
them.
Failure to do so may cause an unexpected accident or severe injury in the event of
emergency braking or a collision.
■When loading cargo
Observe the following precautions.
●Place the cargo so that its weight is distributed evenly between the front and rear
axles.
●If loading long or wide cargo, never exceed the vehicle overall length or width.
(→ P. 4 3 0 )
●Before driving, make sure the cargo is securely fastened on the roof luggage car-
rier.
●Loading cargo on the roof luggage carrier will make the center of the vehicle
gravity higher. Avoid high speeds, sudden starts, sharp turns, sudden braking or
abrupt maneuvers, otherwise it may result in loss of control or vehicle rollover
due to failure to operate this vehicle correctly.
●If driving for a long distance, on rough roads, or at high speeds, stop the vehicle
now and then during the trip to make sure the cargo remains in its place.
●Do not exceed 165 lb. (75 kg) cargo weight on the roof luggage carrier.
NOTICE
■When loading the luggage
Be careful not to scratch the surface of the moon roof.

83
1
Before driving
RX400h_U
1-7. Theft deterrent system
Hybrid vehicle immobilizer system
■System maintenance
The vehicle has a maintenance-free type of immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key to the security system (key with
a built-in transponder chip) of another vehicle
The vehicle's keys have built-in transponder chips that prevent the hybrid
system from starting if the key has not been previously registered in the
vehicle's on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the key has been removed from
the engine switch to indicate
that the system is operating.

92
1-8. Safety information
RX400h_U
Airbag system componentsYour vehicle is equipped with ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag system
controls airbag deployment power for the driver and front passenger. The
driver airbag system consists of the driver seat’s position sensor etc. The
front passenger’s airbag system consists of the front passenger occupant
classification sensor etc.
The main SRS airbag system components are shown above. The SRS
airbag system is controlled by the airbag sensor assembly. The airbag
sensor assembly consists of a sa fing sensor and an airbag sensor.
Front passenger airbag
Curtain shield airbags
Side airbags
Occupant detection system
(ECU and sensors)
AIR BAG ON and AIR BAG
OFF indicator lights
SRS warning light
Driver airbag
Curtain shield airbag sensors
Side and curtain shield airbag
sensors
Driver's seat belt buckle switch
Driver's seat position sensor
Driver knee airbag
Airbag sensor assembly
Front airbag sensors
Front passenger’s seat belt
buckle switch