Page 28 of 862
27
GS450h_U (OM30D01U)
For safety and security1
1-1. For safe use Before driving................................. 28
For safety drive...............................30
Seat belts .......................................... 32
SRS airbags ..................................... 38
Front passenger occupant classification system.................. 49
Safety information for children.................................... 54
Child restraint systems ............... 55
Installing child restraints ............. 59
Exhaust gas precautions ............ 69
1-2. Hybrid system Hybrid system features............... 70
Hybrid system precautions ........ 74
1-3. Theft deterrent system Immobilizer system ...................... 79
Alarm .................................................. 81
GS450h_U.book Page 27 Monday, January 23, 2012 10:20 AM
Page 30 of 862

291-1. For safe use
GS450h_U (OM30D01U)
1
For safety and security
CAUTION
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering with the
pedals while driving. An unexpectedly high speed may result or it may become diffi-
cult to stop the vehicle, leading to an accident, or leading to death or a serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for other models or different model year vehicles,
even if they are Lexus Genuine floor mats.
●Only use floor mats designed for the driver’s seat.
●Always install the floor mat securely using the retaining hooks (clips) provided.
●Do not use two or more floor mats on top of each other.
●Do not place the floor mat bottom-side up or upside-down.
■Before driving
●Check that the floor mat is securely fixed in
the correct place with all the provided
retaining hooks (clips). Be especially care-
ful to perform this check after cleaning the
floor.
●With the hybrid system stopped and the
shift lever in P, fully depress each pedal to
the floor to make sure it does not interfere
with the floor mat.
GS450h_U.book Page 29 Monday, January 23, 2012 10:20 AM
Page 31 of 862
301-1. For safe use
GS450h_U (OM30D01U)
For safety drive
Adjust the angle of the seatback
so that you are sitting straight up
and so that you do not have to
lean forward to steer. (→P. 1 4 8 )
Adjust the seat so that you can
depress the pedals fully and so
that your arms bend slightly at the
elbow when gripping the steering
wheel. ( →P. 1 4 8 )
Lock the head restraint in place
with the center of the head
restraint closest to the top of your
ears. ( →P. 155)
Wear the seat belt correctly.
(→ P. 32)
Make sure that all occupants are we aring their seat belts before driving
the vehicle. ( →P. 32)
Use a child restraint system appropriate for the child until the child
becomes large enough to properly wear the vehicle’s seat belt. ( →P. 5 5 )
For safe driving, adjust the seat and mirror to an appropriate position
before driving.
Correct driving posture
1
2
3
4
Correct use of the seat belts
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Page 32 of 862

311-1. For safe use
GS450h_U (OM30D01U)
1
For safety and security
Make sure that you can see backward clearly by adjusting the inside and
outside rear view mirrors properly. (→P. 159, 161)
Adjusting the mirrors
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
●Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle.
●Do not place a cushion between the driver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce the
effectiveness of the seat belt and head restraint.
●Do not place anything under the front seats.
Objects placed under the front seats may become jammed in the seat tracks and
stop the seat from locking in place. This may lead to an accident and the adjust-
ment mechanism may also be damaged.
●When driving over long distances, take regular breaks before you start to feel
tired.
Also, if you feel tired or sleepy while driving, do not force yourself to continue
driving and take a break immediately.
GS450h_U.book Page 31 Monday, January 23, 2012 10:20 AM
Page 33 of 862
321-1. For safe use
GS450h_U (OM30D01U)
Seat belts
●Extend the shoulder belt so that it
comes fully over the shoulder, but
does not come into contact with
the neck or slide off the shoulder.
●Position the lap belt as low as
possible over the hips.
●Adjust the position of the seat-
back. Sit up straight and well back
in the seat.
●Do not twist the seat belt.
To fasten the seat belt, push the
plate into the buckle until a click
sound is heard.
To release the seat belt, press the
release button.
Make sure that all occupants are wearing their seat belts before driving
the vehicle.
Correct use of the seat belts
Fastening and releasing the seat belt
Release button
1
2
GS450h_U.book Page 32 Monday, January 23, 2012 10:20 AM
Page 34 of 862
331-1. For safe use
GS450h_U (OM30D01U)
1
For safety and security
Push the seat belt shoulder
anchor down while pressing the
release button.
Push the seat belt shoulder
anchor up.
Move the height adjuster up and down
as needed until you hear a click.
For children or smaller-than-aver-
age people, slide the seat belt com-
fort guide forward so that the
shoulder belt does not sit close to
the person’s neck.
Adjusting the seat belt shoulder anchor height (front seats)
1
2
Seat belt comfort guide (outboard rear seats)
GS450h_U.book Page 33 Monday, January 23, 2012 10:20 AM
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341-1. For safe use
GS450h_U (OM30D01U)The pretensioner helps the seat belt
to quickly restrain the occupant by
retracting the seat belt when the
vehicle is subjected to certain types
of severe frontal collision.
The front seat pretensioners also acti-
vate when the vehicle is subjected to
certain types of severe side collision.
The pretensioner does not activate in
the event of a minor frontal impact, a
minor side impact, a rear impact or a
vehicle rollover.
If the pre-collision sensor detects that a collision is unavoidable, the pre-
collision system will retract the seat belt before the collision occurs.
(→
P. 2 9 6 )
■Emergency locking retractor (ELR)
The retractor will lock the belt during a sudden stop or on impact. It may also lock if
you lean forward too quickly. A slow, easy motion will allow the belt to extend so that
you can move around fully.
■Automatic locking retractor (ALR)
When a passenger’s shoulder belt is completely extended and then retracted even
slightly, the belt is locked in that position and cannot be extended. This feature is used
to hold the child restraint system (CRS) firmly . To free the belt again, fully retract the
belt and then pull the belt out once more. ( →P. 5 9 )
Seat belt pretensioners (front and outboard rear seats)
Pre-collision seat belts (front seat s of vehicles with pre-collision
system)
GS450h_U.book Page 34 Monday, January 23, 2012 10:20 AM
Page 36 of 862

351-1. For safe use
GS450h_U (OM30D01U)
1
For safety and security
■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 becomes large
enough to properly wear the vehicle’s seat belt. (→P. 5 5 )
●When the child becomes large enough to properly wear the vehicle’s seat belt, fol-
low the instructions regarding seat belt usage. ( →P. 3 2 )
■Replacing the belt after the pretensioner 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
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.
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking, sudden swerving or an accident.
Failure to do so may cause death or serious 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.
●To achieve a proper seating position, do not recline the seat more than necessary.
The seat belt is most effective when the occupants are sitting up straight and well
back in the seats.
●Do not wear the shoulder belt under your arm.
●Always wear your seat belt low and snug across your hips.
GS450h_U.book Page 35 Monday, January 23, 2012 10:20 AM