2007 Lexus GS450h light

65
1-7. Anti-theft system
1
Before driving
■When the 12 volt battery is disconnected
Be sure to cancel the alarm system. 
If the 12 volt battery is discharged before canceling the alarm, the system may be
triggered when the battery is reconnected.
■Pa n i c m o d e
When is pushed for longer than about
one second, the headlights/tail lights/emer-
gency flashers will flash, the front and rear
interior lights will come on, and an alarm will
sound for about 60 seconds to deter any
person from trying to break into or damage
your vehicle.
To stop the alarm, push any button on the
wireless remote control.

70
1-8. Safety information
Airbag system components
The main SRS airbag system components are shown above. The SRS air-
bag system is controlled by the airb ag sensor as
sembly. The airbag sen-
sor assembly consists of a safing sensor and an airbag sensor.
Occupant detection sensor
Front passenger’s seat belt
buckle switch
Knee airbag
Front passenger airbag
Curtain shield airbag
Front side airbag
Side and curtain shield airbag
sensor Curtain shield airbag sensor
SRS warning light
Rear side airbag (if equipped)
Driver airbag
Driver's seat belt buckle switch
Driver's seat position sensor
Airbag sensor assembly
Front airbag sensor
Curtain shield airbag
Can help protect primarily the head of fr
ont occupants and rear out-
board occupants.

71
1-8. Safety information
1
Before driving
In certain types of severe frontal or side impacts, the SRS airbag system
triggers the airbag inflators. A chemica l reaction in the inflators quickly
fills the airbags with non-toxic gas to help restrain the motion of the occu -
pants.
■If the SRS airbags deploy (inflate)
●Bruising and slight abrasions may result from contact with a deploying (inflating)
SRS airbag.
●A loud noise and white powder will be emitted.
●Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well as the front seats, and parts of the front pillar and roof side rail, may be hot
for several minutes. The airbag itself may also be hot.
●The windshield may crack.
■Operating conditions (front airbags)
●The SRS front airbags will deploy if the severity of the frontal impact is above the
designed threshold level, comparable to an approximate 15 mph (25 km/h) col -
lision in the U.S.A. and 18 mph (30 km/h) collision in Canada when the vehicle
impact
s straight into a fixed barrier that does not move or deform.
However, this threshold velocity will be considerably higher if the vehicle strikes
a
n object, such as a parked vehicle or sign pole, which can move or deform on
impact, or if the vehicle is involved in an underride collision (e.g. a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a truck, etc.).
●It is possible that in some collisions where the forward deceleration of the vehi -
cle is very close to the designed thresh ol
d level, the SRS front airbags and the
seat belt pretensioners ma y not activate together.
●The SRS front passenger airbag will not activate, if there is not passenger sitting
in the front passenger seat. However, th e front passenger airbag may deploy, if
luggage is put in the seat or the seat belt is buckled up, regardless of the pres -
ence of an occupant in the seat.

75
1-8. Safety information
1
Before driving
CAUTION
■SRS airbag precautions
Observe the following precautions regarding the airbags. Failure to do so may
cause death or serious injury.
●The driver and all passengers in the vehicle must wear their seat belts properly.
The SRS airbags are supplemental devices to be used with the seat belts.
●The SRS driver airbag deploys with considerable force, and can cause death or
serious injury especially if the driver is very close to the airbag. The National
Highway Traffic Safety Administration (“NHTSA”) advises:
Since the risk zone for driver airbag is th e first 2 - 3 in. (50 - 75 mm) of inflation,
placing yourself 10 in. (250 mm) from your driver airbag provides you with a
clear margin of safety. This distance is measured from the center of the steering
wheel to your breastbone. If you sit less than 10 in. (250 mm) away now, you can
change your driving position in several ways:
• Move your seat to the rear as far as you can while still reaching the pedals
comfortably.
• Slightly recline the back of the seat. Al though vehicle designs vary, many driv-
ers can achieve the 10 in. (250 mm) distance, even with the driver seat all the
way forward, simply by reclining the back of the seat somewhat. If reclining
the back of your seat makes it hard to see the road, raise yourself by using a
firm, non-slippery cushion, or raise the seat if your vehicle has that feature.
• If your steering wheel is adjustable, tilt it downward. This points the airbag toward your chest instead of your head and neck.
The seat should be adjusted as recommended by NHTSA above, while still main-
taining control of the foot pedals, steering wheel, and your view of the instrument
panel controls.

84
1-8. Safety information
Installing child restraints using a seat belt (child restraint lock function belt)
■Rear facing child seat Infant/convertible
Place the child seat on the rear
seat facing the r
ear of the vehicle.
Run the seat belt through the infant
seat and inser
t the plate into the
buckle. Make sure that the belt is
not twisted.
Fully extend the shoulder belt and
then allo

w it to retract slightly in
order to activate the ALR lock
mode.
Lock mode allows the seat belt to
retract only.
STEP1
STEP2
STEP3

85
1-8. Safety information
1
Before driving
While pushing the child seat down
into the rear seat, allow the shoul-
der belt to retract until the child
seat is secur

ely 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 child seat
Place the child seat on the seat
facing the fr
ont of the vehicle.
Run the seat belt through the child
seat and inser
t the plate into the
buckle. Make sure that the belt is
not twisted.
Fully extend the shoulder strap and
then allo
w it to retract slightly into
the ALR lock mode.
Lock mode allows the seat belt to
retract only.
STEP4
STEP1
STEP2
STEP3

87
1-8. Safety information
1
Before driving
Removing a child restraint installed with a seat belt
Push the buckle release button
and fully retract the seat belt.
Installation with child restraint lower anchorages
Type AWiden the gap between
the seat cushion and seat-
back slightly.
Latch the hooks of the
lower straps onto the
anchor

ages.
If the child restraint has a top
strap, the top strap should be
latched onto the anchorage.
For owners in Canada: 
The symbol on a child restraint sys -
tem indicates the presence of a
lo

wer anchorage system.
Canada only
STEP1
STEP2

88
1-8. Safety information
Type BWiden the gap between
the seat cushion and seat-
back slightly.
Latch the buckles onto the
anchorages.
If the child restraint has a top
strap, the top strap should be
latched onto the anchorage.
For owners in Canada: 
The symbol on a child restraint sys -
tem indicates the presence of a
lo
wer anchorage system.
Child restraint systems with a top strap
Secure the child restraint using a
seat belt or lower anchors, and
lock the head restraint in place at
the lowest position.
Canada only
STEP1
STEP2
STEP1