driver seat adjustment lexus LS400 1998 Audio System / LEXUS 1998 LS400 OWNER'S MANUAL (OM50498U)

00L05700L056
Seat adjustment
Seat
position
Seat
cushion
angle
Seat cushion
height
Head restraint
height
Seatback
angle
Lumbar
support
Head restraint
angleSeat adjustment
Seat
position
Seat
cushion
angle
Seat cushion
height
Head restraint
height Seatback
angle
Lumbar
support
Head restraint
angle
BASIC OPERATION QUICK REFERENCE
2
1. DRIVER’S SEAT
Power head restraint type Manual head restraint type

COMFORT ADJUSTMENT
70
FRONT SEATS
Front seat precautions
CAUTION
The SRS side airbags are installed in the driver and front
passenger seats. Observe the following precautions.
Do not lean over the front door when the vehicle is in use.
The side airbag inflates with considerable speed and force;
you may be killed or severely injured.
Do not modify or replace the seats or the surface of the seats
with side airbags. Such changes may disable the system, or
cause the side airbags to inflate, resulting in death or
serious injury. Consult your Lexus dealer.
Do not use accessories for the seats which cover the parts
where the side airbags should inflate. Such accessories may
prevent the side airbags from activating correctly, causing
death or serious injury.
Seat adjustment precautions
Adjust the driver’s seat so that the foot pedals, steering wheel and
instrument panel controls are within easy reach of the driver.
CAUTION
Do not adjust the seat while the vehicle is moving as the seat
may unexpectedly move and cause the driver to lose control
of the vehicle.
Be careful not to hit the seat against a passenger, luggage or
the rear seat.
NOTICE
Do not operate the control switch in more than one dimension
at a time. It may cause electrical overload.

COMFORT ADJUSTMENT
72
Adjusting seatback angle
16L112
Move the control switch in the desired direction.
Releasing the switch will stop the seatback in that position.
CAUTION
To reduce the risk of sliding under the lap belt during a
collision, avoid reclining the seatback any more than needed.
The seat belts provide maximum protection in a frontal or rear
collision when the driver and the passenger are sitting up
straight and well back in the seats. If you are reclined, the lap
belt may slide past your hips and apply restraint forces
directly to the abdomen. Therefore, in the event of a frontal
collision, the risk of personal injury may increase with
increasing recline of the seatback.
Adjusting seat cushion angle and height
16L113
Move the control switch in the desired direction.
Releasing the switch will stop the seat cushion in that position.

COMFORT ADJUSTMENT
80
SEAT BELTS
Seat belt precautions
Lexus strongly urges that the driver and passengers in the vehicle be
properly restrained at all times with the seat belts provided. Failure
to do so could increase the chance of injury and/or the severity of
injury in accidents.
Child. Use a child restraint system appropriate for the child until the
child becomes large enough to properly wear the vehicle’s seat belts.
See ”Child restraint” for details.
If a child is too large for a child restraint system, the child should sit
in the rear seat and must be restrained using the vehicle’s seat belt.
According to accident statistics, the child is safer when properly
restrained in the rear seat than in the front seat.
If a child must sit in the front seat, the seat belts should be worn
properly. Do not let the child sit on your lap. It does not provide
sufficient restraint. If an accident occurs and the seat belts are not
worn properly, the force of the rapid inflation of the airbag may cause
severe injury to the child.
Do not allow the child to stand up or kneel on either rear or front
seats. An unrestrained child could suffer serious injury during
emergency braking or a collision.Pregnant woman. Lexus recommends the use of a seat belt. Ask
your doctor for specific recommendations. The lap belt should be
worn securely and as low as possible over the hips and not on the
waist.
Injured person. Lexus recommends the use of a seat belt.
Depending on the injury, first check with your doctor for specific
recommendations.
CAUTION
Persons should ride in their seats properly wearing their seat
belts whenever the vehicle is moving. Otherwise, they are
much more likely to suffer serious bodily injury in the event
of sudden braking or a collision.
When using the seat belts, observe the following:
Use the belt for only one person at a time. Do not use a
single belt for two or more people even children.
Avoid reclining the seatbacks too much. The seat belts
provide maximum protection when the seatbacks are in the
upright position. (See ”Adjusting seatback angle”.)
Be careful not to damage the belt webbing or hardware.
Take care that they do not get caught or pinched in the seat
or doors.
Inspect the belt system periodically. Check for cuts,
fraying, and loose parts. Damaged parts should be
replaced. Do not disassemble or modify the system.

COMFORT ADJUSTMENT
81 Keep the belts clean and dry. If they need cleaning, use a
mild soap solution or lukewarm water. Never use bleach,
dye, or abrasive cleaners they may severely weaken the
belts.
Replace the belt assembly (including bolts) if it has been
used in a severe impact. The entire assembly should be
replaced even if damage is not obvious.
Front seat belt buckle illumination
16L020
Opening the driver’s door lights up the driver’s seat belt buckle
for easy use. The same applies for the front passenger’s door and
seat belt buckle.
The light remains on for 15 seconds after the door is closed, but goes
off immediately when all doors are locked.
Fastening front and rear seat belts
16L115-1
Adjust the seat as needed and sit up straight and well back in the
seat. To fasten your belt, pull it out of the retractor and insert the
tab into the buckle.
You will hear a click when the tab locks into the buckle.
The seat belt length automatically adjusts to your size and the seat
position.
The retractor will lock the belt during a sudden stop or on impact.
It also may lock if you lean forward too quickly. A slow, easy motion
will allow the belt to extend, and you can move around freely.

COMFORT ADJUSTMENT
86
SUPPLEMENTAL RESTRAINT
SYSTEM (SRS)
The Supplemental Restraint System (SRS) consists of driver and
front passenger airbags, side airbags and seat belt pretensioners.
The combination of these 3 systems is designed to provide
further protection for the driver and front passenger when
added to the primary protection provided by the seat belts.
16L1181
Driver and front passenger airbags, and seat belt pretensioners
Driver and front passenger airbags:
In response to a severe frontal impact, the driver and front
passenger airbags work together with the seat belts to help
preventing or reduce injury by inflating, in order to decrease the
likelihood of the driver’s or front passenger’s heads or chests
from directly hitting the steering wheel or dashboard.Seat belt pretensioners:
In response to a severe frontal impact, the seat belts are quickly
drawn back in by the retractors so that the belts snugly restrain
the driver and front passenger.
The front passenger airbag is activated even with no passenger in the
front seat.
The seat belt pretensioners are activated together with the driver and
front passenger airbags, even with no passenger in the front seat.
Be sure to wear your seat belt.
CAUTION
The driver or front passenger too close to the steering wheel
or dashboard during airbag deployment can be killed or
seriously injured. Lexus strongly recommends that:
The driver sit as far back as possible from the steering
wheel while still maintaining control of the vehicle.
The front passenger sit as far back as possible from the
dashboard.
All vehicle occupants be properly restrained using the
available seat belts.

COMFORT ADJUSTMENT
87
16L1732
Side airbags
Side airbags:
In response to a severe side impact, the side airbag for the driver
or front passenger works together with the seat belt to help
preventing or reducing injury by inflating, in order to decrease
the impact mainly on the driver or front passenger’s chest.
The side airbag on the passenger seat is activated even with no
passenger in the front seat.
Be sure to wear your seat belt.
CAUTION
SRS side airbags inflate with considerable force. To avoid
potential death or serious injury during inflation of a side
airbag, Lexus strongly recommends that the driver and front
passenger;
Wear their seat belt.
Remain properly seated with their back against the seat at
all times.
16L136-2
The indicator comes on when the ignition key is turned to the
”ACC” or ”ON” position. It goes off after about 6 seconds. This
means the SRS is operating properly.
The SRS warning light system monitors the airbag sensor
assemblies, inflators, seat belt pretensioners, warning light,
interconnecting wiring and power sources.

COMFORT ADJUSTMENT
88
16L029
The driver and front passenger airbags and seat belt
pretensioners are designed to activate in response to a severe
frontal impact within the shaded area between the arrows in the
illustration.
There may be the case that the driver and passenger airbags and seat
belt pretensioners will not activate with such an impact in which the
occupant wearing the seat belt correctly would not get serious injury.
The driver and front passenger airbags and seat belt pretensioners
will work if the severity of the impact is above the designed threshold
level, comparable to an approximate 20 km/h (14 mph) collision
when impacting straight into a fixed barrier that does not move or
deform.
If the severity of the impact is below the above threshold level, the
driver and front passenger airbags and seat belt pretensioners may
not work.However, this threshold velocity will be considerably higher if the
vehicle strikes an object, such as a parked vehicle or sign pole, which
can move or deform on impact, or if it is involved in an underride
collision (e.g. a collision in which the nose of the vehicle
”underrides”, or goes under, the bed of a truck).
It is possible with collision severity at the marginal level of driver
and passenger airbag sensor detection and activation that only one
of your vehicle’s driver and front passenger airbags and seat belt
pretensioners will work.
For the safety of all occupants, be sure to always wear seat belts.

COMFORT ADJUSTMENT
89
16L1751
1
Collision from the rear
2
Vehicle rollover
The driver and front passenger airbags and seat belt
pretensioners are not designed to inflate if the vehicle is
subjected to a rear impact, if it rolls over, or if it is involved in a
lowspeed frontal collision.
The side airbags are designed to inflate when the passenger
compartment gets a severe impact from the side.
The side airbags may rather not to activate in the impact in which the
occupant wearing the seat belt correctly would not get serious injury.
16L187-2
1
Collision from the side at an angle
2
Collision from the side to the vehicle body other
than the passenger compartment
The side airbags may not inflate if the vehicle is subjected to a
collision from the side at an angle, or a collision to the side of the
vehicle body other than the passenger compartment, which
impact is not severe enough for the passenger compartment.

COMFORT ADJUSTMENT
90
16L1882
Vehicle rollover
The side airbags are not designed to inflate if the vehicle is rolled
over.
If the impact on the body of the passenger compartment is not strong
as illustrated above, the relevant side airbag may not inflate.
16L1931
1
Side airbag module (airbag and inflator)
2
Front passenger airbag module (airbag and inflator)
3
Side airbag sensor assembly
4
Seat belt pretensioner
5
Steering wheel pad assembly (airbag and inflator)
6
SRS warning light
7
Driver and front passenger airbag sensor assembly
The SRS airbag sensor assemblies consist of a safing sensor and
driver and front passenger airbag sensor.
In a severe frontal impact, the driver and front passenger airbag
sensor detects deceleration and the system triggers the front airbag
inflators and seat belt pretensioners. In a severe side impact, the side
airbag sensor triggers the side airbag inflator. Then a chemical
reaction in the inflators momentarily fills the airbags with nontoxic
gas to help restrain the forward or lateral motion of the occupants.
Then the inflators fill the airbags and the seat belts are quickly drawn
back in by the retractors to help restrain forward motion of the
occupants.
When the SRS operates, it produces a fairly loud noise and release