lights LEXUS RX330 2006 Service Manual

OCCUPANT RESTRAINT SYSTEMS
174
1Airbag module for front passenger
(airbag and inflator)
2Front passenger occupant classification system
(ECU and sensors)
3“AIRBAG ON” and “AIRBAG OFF” indicator lights
4SRS warning light
5Airbag module for driver (airbag and inflator)
6Driver’s seat belt buckle switch
7Driver’s seat position sensor
8Knee airbag module for driver (airbag and inflator)
9Airbag sensor assembly
10Front airbag sensors
11Front passenger’s seat belt buckle switch
The SRS front airbag system consists mainly of the above
components, and their locations are shown in the illustration.
The airbag sensor assembly consists of a safing sensor and
airbag sensor. The airbag sensors constantly monitor the forward
deceleration of the vehicle. If an impact results in a forward
deceleration beyond the designed threshold level, the system
triggers
the airbag inflators. At this time a chemical reaction in
the inflators very quickly fills the airbags with non− toxic gas to
help restrain the forward motion of the occupants. The front
airbags then quickly deflate, so that there is no obstruction of
the driver’s vision should it be necessary to continue driving.
When the airbags inflate, they produce a loud noise and
release some smoke and residue along with non −toxic gas.
This does not indicate a fire. This smoke may remain inside the
vehicle for some time, and may cause some minor irritation to
the eyes, skin or breathing. Be sure to wash off any residue as
soon as possible to prevent any potential skin irritation with
soap and water. If you can safety exit from the vehicle, you
should do so immediately.

OCCUPANT RESTRAINT SYSTEMS
186
1Curtain shield airbag modules (airbag and inflater)
2Side airbag modules (airbag and inflator)
3Front passenger occupant classification system
(ECU and sensors)
4“AIRBAG ON” and “AIRBAG OFF” indicator lights
5SRS warning light
6Curtain shield airbag sensor assemblies
7Side and curtain shield airbag sensor assemblies
8Airbag sensor assembly
9Front passenger’s seat belt buckle switch
The SRS side airbag and curtain shield airbag system consists
mainly of the above components, and their locations are shown
in the illustration.
The SRS side airbag and curtain shield airbag system is
controlled by the airbag sensor assembly. The airbag sensor
assembly consists of a safing sensor and airbag sensor.
In a severe side impact, the side and curtain shield airbag
sensor and/or the curtain shield airbag sensor trigger(s) the
side airbag inflators and/or the curtain shield airbag inflators.
At this time a chemical reaction in the inflators quickly fills the
airbags with non −toxic gas to help restrain the lateral motion
of the occupants.
In a vehicle rollover, the airbag sensor assembly triggers the
curtain shield airbag inflator. At this time, a chemical reaction
in the inflators quickly fills the airbags with non −toxic gas to
help restrain the lateral motion of the occupants. When the airbags inflate, they produce a fairly loud noise and
release some smoke and residue along with non
−toxic gas.
This does not indicate a fire. This smoke may remain inside the
vehicle for some time, and may cause some minor irritation to
the eyes, skin or breathing. Be sure to wash off any residue as
soon as possible to prevent any potential skin irritation with
soap and water. If you can safely exit from the vehicle, you
should do so immediately.
Deployment of the airbags happens in a fraction of a second,
so the airbags must inflate with considerable force. While the
system is designed to reduce se rious injuries, it may also
cause minor burns or abrasions and swelling.
Front seats as well as parts of the front and rear pillars, and roof
side rail may be hot for several minutes, but the airbags
themselves will not be hot. The airbags are designed to inflate
only once.
CAUTION
SRS side airbags and curtain shield airbags inflate with
considerable force. To reduce the possibility of death
or serious injury when they inflate, the driver, front
passenger and rear outboard passengers must:
 Wear their seat belts properly.
 Remain properly seated with their backs upright and
against the seats at all times.

OCCUPANT RESTRAINT SYSTEMS
194The “AIRBAG ON” and “AIRBAG OFF” indicator lights will
be illuminated when the ignition switch is in the “ON”
position
and a child or child restraint system is in the front
passenger seat (see tablecondition 2). This indicates
that in the event of a severe frontal or passenger’s side
impact, the front passenger airbag and side airbag on the
front passenger seat are deactivated and will not deploy.
If the front passenger occupant classification system
determines that a person of adult size sits in the front
passenger seat but the “AIRBAG OFF” indicator light is
illuminated, one of the following is likely to have occurred:
 The rear passenger lifts the front passenger seat cushion
with their legs.
 Objects are placed under the front passenger seat.
 A front passenger seat seatback is in contact with a rear
seat.
To ensure the system correctly detects an adult sitting in the
front passenger seat, make sure the above do not happen.
Make sure the “AIRBAG ON” indicator light is illuminated when
an adult sits in the front passenger seat. If the “AIRBAG OFF”
indicator light is illuminated, ask the passenger to sit up
straight, well back in the seat, and with the seat belt worn
correctly. If the “AIRBAG OFF” indicator light still remains
illuminated, either ask the passenger to move to the rear seat,
or if that is not possible, move the front passenger seat fully
rearward. The “AIRBAG ON” and “AIRBAG OFF” indicator light will
be initially illuminated when the ignition switch is turned
to the “ON” position. It will remain for about four seconds
and then go off. After about two seconds, the front
passenger occupant classification system operates and
judges whether to turn the indicator light on or not.
The SRS warning light and “AIRBAG OFF” indicator light
will be illuminated if there is a malfunction in the front
passenger occupant classification system.

OCCUPANT RESTRAINT SYSTEMS
195
Condition and operation in the front passenger occupant classification s\
ystem
Condition detected by the front
passenger occupant
classification system
Indicator/warning lightDevices
“AIRBAG ON” and
“AIRBAG OFF”
indicator lights
SRS
warning light
Front
passenger’s seat belt
reminder light
Front
passenger airbagSide airbag
on the frontpassenger seatCurtain
shield airbag in the frontpassenger sideFront
passenger’s seat belt
pretensioner
1Adult*1“AIRBAG ON”OffFlashing*4Activated
2Child *2 or child
restraint system*3“AIRBAG OFF”OffFlashing*4Deactivated
Activated
Activated
3UnoccupiedNot
illuminatedOffOffDeactivatedDeactivated
4There is a
malfunction in the
system“AIRBAG OFF”OnOffDeactivatedActivated
*1: The system judges a person of adult size as an adult. When a smaller ad\
ult sits in the front passenger seat, the system may recognize him/her as a child depending on his/her physique and posture.
*
2: When a larger child who has outgrown 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.
*
3: Never install a rear −facing child restraint system on the front passenger seat. A forward −facing child restraint system should
only be installed on the front passenger seat when it is unavoidable. (\
See “Child restraint system” as for installing the chil d
restraint system.)
*
4: In the event the front passenger does not wear a seat belt.

STEERING WHEEL AND MIRRORS
230
Automatic tiltaway steering column*
When the ignition key is removed, the steering column
moves forward away from the driver and also tilts up for
easy exit and entry.
When the key is inserted in the ignition switch, the steering
column returns to the previously set position.NOTE:
* This feature can be deactivated.
Ask your Lexus dealer for details.
OUTSIDE REAR VIEW MIRRORS
Adjust the mirror so that you can just see the side of your
vehicle in the mirror.
When the inside rear view mirror darkens in AUTO mode, the
outside rear view mirrors also darken to reduce the reflection
of the headlights of the following vehicle. For details, see
“Inside rear view mirror” on page 233.
When you push the rear window and outside rear view mirror
defogger switch, the heater panels in the outside rear view
mirrors will quickly clear the mirror surface. (See “Rear window
and outside rear view mirror defogger, and windshield wiper
de−icer switch” on page 61.)

STEERING WHEEL AND MIRRORS
233
INSIDE REAR VIEW MIRROR
Adjust the mirror so that you can just see the rear of your
vehicle in the mirror. Pushing the “MIRROR” switch changes the mode
between AUTO and DAY.
The indicator comes on when the AUTO mode is selected.
DAY mode: The mirror surface is normal.
AUTO mode: If the mirror detects light from the headlights
of the vehicle behind you, the mirror surface darkens
slightly to reduce the reflected light.
When
the inside rear view mirror surface changes, the outside
rear view mirror surfaces will also become darker.
When the ignition key is inserted and turned on, the inside rear
view mirror always turns on in the AUTO mode.
When the outside air temperature is low, it may take a little
longer for the mirror to darken in response to the detection of
headlights.

STARTING AND DRIVING
388
HOW TO START THE ENGINE
Before cranking
1. Apply the parking brake firmly.
2. Turn off unnecessary lights and accessories.
3. Put the selector lever in “P”. If you need to restart the engine
while the vehicle is moving, put the selector lever in “N”. A
starter safety device will prevent the starter from operating if
the selector lever is in any drive position.
4. Depress the brake pedal and hold it to the floor until driving
off.
Starting the engine
Before starting the engine, be sure to follow the instructions in
“Before cranking”.
Normal starting procedure
The multiport fuel injection system/sequential multiport fuel
injection system in your engine automatically controls the
proper air −fuel mixture for starting. You can start a cold or hot
engine as follows:
With your foot off the accelerator pedal, crank the engine by
turning the key to “START”. Release it when the engine starts.
Engine should be warmed up by driving, not in idle. For
warming up, drive with the engine turning smoothly until engine
coolant temperature is within normal range.

STARTING AND DRIVING
411

The area covered by the camera is limited. Objects
which are close to either corner of the bumper or under
the bumper cannot be seen on the screen.
 The area displayed on the screen may vary according
to vehicle orientation or road conditions. THE REAR VIEW MONITOR SYSTEM CAMERA
The rear view monitor system camera is located on the back
door as shown in the illustration. The camera uses a special
lens. The distance of the image that appears on the screen
differs from the actual distance.
In the following cases, it may become difficult to
see the images
on the screen, even when the system is functioning.
 In the dark (for example, at night)
 When the temperature near the lens is extremely high or low
 When water droplets are adhering to the camera, or when
humidity is high (for example, when it rains)
 When foreign matter (for example, snow or mud) adheres
to the camera lens
 When the sun or the beam of headlights is shining directly
into the camera lens

STARTING AND DRIVING
423
If other vehicles are driving outside of the laser radar
detection range, a delay in the detection of the
vehicle cutting in at short range or failure to detect a
motorcycle running on the side of the same lane will
occur. In this case, the dynamic laser cruise control
system will not function properly.
 When a slower vehicle in front of you leaves the lane,
the dynamic laser cruise control will no longer detect
a vehicle ahead and will attempt to accelerate the
vehicle to the faster preset speed.
(b) Turning the system on and off
To turn the dynamic laser cruise control on, press the
“ON−OFF” button. The “CRUISE” and “READY” indicator
lights on the instrument cluster will come on to indicate that the
vehicle −to−vehicle distance control mode is operational.
Pressing the “ON −OFF” button again turns the system off.
When the system is turned off, cruising speed and
vehicle −to−vehicle distance must be reset when the
vehicle −to−vehicle distance control mode is turned on again.
When the ignition is turned off, the system is also automatically
turned off. To use dynamic laser cruise control again, press the
“ON−OFF” button again to turn it on.
When the ignition is turned off, all the preset data is cleared.
When you use the dynamic laser cruise control again, you
need to reset the data.

STARTING AND DRIVING
434(a) Turning the system on and off
To turn the conventional cruise control mode on, press the
“ON−OFF” button. The “CRUISE” and “READY” indicator
lights on the
instrument panel will come on. Push the lever in
the “MODE” direction for longer than 1 second to change to
conventional cruise control mode. The indicator on the
instrument panel is as shown. You can now set the cruising
speed. Pressing the “ON− OFF” button again turns the system
off.
When the system is turned off, cruising speed must be reset
when the conventional cruise control mode is turned on again.
However, once the vehicle −to−vehicle distance control mode
activates and is used, the system cannot be changed to the
conventional cruise control mode using the above operation.
To change the mode, you must turn this system off and then on
again. Next pu sh the lever in the “MODE” direction for longer
than about 1 second. To change to the vehicle
−to−vehicle distance control mode
from the conventional cruise control mode, push the lever in
the “MODE” direction for longer than about 1 second.
CAUTION
To avoid accidentally engaging the cruise control, turn
the system off when it is not in use. Make sure the
“CRUISE” indicator light is off.