INSTRUMENT lexus LS400 1998 Engine / LEXUS 1998 LS400 (OM50498U) Owner's Guide

Page 80 of 304

EXTERIOR EQUIPMENT
65
FUEL TANK CAP
15L006
1. To open the fuel filler door, pull the lever under the
instrument panel.
When refueling, turn off the engine.
CAUTION
Do not smoke, cause sparks or allow open flames when
refuelling. The fumes are flammable.
When opening the cap, do not remove the cap quickly. In
hot weather, fuel under pressure could cause injury by
spraying out of the filler neck if the cap is suddenly
removed.
15L007-1
2. To remove the fuel tank cap, turn the cap slowly
counterclockwise, then pause slightly before removing it. The
removed cap can be stored on the back side of the fuel filler door.
It is not unusual to hear a slight swoosh when the cap is opened.
When installing the cap, turn the cap clockwise until you hear a click.
If the cap is not tightened securely, the malfunction indicator lamp
comes on. Make sure the cap is tightened securely.
The indicator lamp goes off after driving several times. If the
indicator lamp does not go off, contact your Lexus dealer as soon as
possible.

Page 84 of 304

SECTION 1 6
69
INSTRUMENTS AND CONTROLS
Comfort adjustment
Front seats 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head restraints 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tilt and telescopic steering wheel 76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside rear view mirrors 77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside rear view mirror 79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat belts 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental restraint system (SRS) 86. . . . . . . . . . . . . . . . . . . . . . . . . . .
Child restraint 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving position memory system 113. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 85 of 304

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.

Page 131 of 304

SECTION 1 7
116
INSTRUMENTS AND CONTROLS
Theft deterrent
Theft deterrent system 117. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft prevention labels 119. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 140 of 304

AIR CONDITIONING AND AUDIO
125
21L005-2
Driver side setting
Passenger side setting
Mixed settingSETTING OPERATION manual control
If manual air flow selection is desired
21L006-3
The outlets from which air is delivered can be selected manually by
pushing the button. The function of each mode is as follows:
1
Panel Air flows mainly from the instrument panel vents.
2
Bilevel Air flows from both the floor vents and the
instrument panel vents.
3
Floor Air flows mainly from the floor vents.
4
Floor/Windshield Air flows mainly from the floor vents and
windshield vents.

Page 175 of 304

STARTING AND DRIVING
160
AUTOMATIC TRANSMISSION
Your automatic transmission has a shift lock system to minimize
the possibility of incorrect operation. This means you can only
shift out of ”P” position when the brake pedal is depressed with
the ignition switch in ”ON” position. ( )
31L078
The shift position is displayed on the instrument cluster.P:Parking, engine starting and key removal position
R:Reverse position
N:Neutral position
D:Normal driving position (Shifting into overdrive possible)
4:Position for engine braking (Shifting into overdrive not
possible)
When the cruise control is being used, even if you downshift
from ”D” to ”4”, engine braking will not be applied because
the cruise control is not cancelled. For the operation to
decrease the vehicle speed, see page 170.
3, 2:Position for more powerful engine braking
L:Position for maximum engine braking

Page 177 of 304

STARTING AND DRIVING
162
31L008-3
1
Power mode 2
Normal mode 3
Snow mode
2. Set the driving pattern selector switch to the ”Normal”
position.
Your transmission has a driving pattern selector switch which allows
you to select ”Power”, ”Normal” or ”Snow” mode to suit your
driving condition. For ordinary driving, Lexus recommends that
you use the ”Normal” position to improve fuel economy.
3. For more powerful acceleration and sporty driving, use the
”Power” position.
In the POWER position, the ”ECT PWR” light in the instrument
cluster is on and the transmission is shifted up at higher vehicle
speeds and shifted down more responsively than in the NORMAL
position.
For ”Snow” mode, see ”Electronic Throttle Control System” on
page 167.
31l0552
1
”D” (Drive) position 2
Brake pedal
4. With your foot holding down the brake pedal, shift the
selector lever to ”D”.
Always use the ”D” position to improve fuel economy and quiet
driving. Only in this position, shifting into the overdrive gear is
possible. However, while the engine coolant temperature is low, the
transmission will not shift into the overdrive gear even in the ”D”
position. (See ”(b) Using engine braking” and ”(f) Good driving
practice” for exceptions.)
CAUTION
Never put your foot on the accelerator pedal while shifting.

Page 183 of 304

STARTING AND DRIVING
168In the power mode, the ”ECT PWR” light in the instrument cluster
is on and the transmission is shifted up at higher vehicle speeds and
shifted down more responsively than is the normal mode.
To return to the normal mode, push the driving pattern selector
switch lightly on the ”SNOW” side.
Snow mode: For slippery road surfaces such as in snow. In this
mode, the spinning of the rear wheels is controlled appropriately.
When you push the driving pattern selector switch on the ”SNOW”
side, the snow mode is turned on and the ”ECT SNOW” light in the
instrument cluster comes on.
To return to the normal mode, push the driving pattern selector
switch on the ”SNOW” side again.
When you turn the ignition switch off in the snow mode, the mode
automatically changes to the normal mode.
CRUISE CONTROL
The cruise control allows you to cruise the vehicle at a desired
speed over 40 km/h (25 mph) with your foot off the accelerator
pedal.
Your cruising speed can be maintained although a slight speed
change may occur when driving up or down a gradient, within the
limits of engine performance. On steeper hills, a great speed change
will occur so it is better to drive without the cruise control.
When the cruise control is on, the driving pattern of the automatic
transmission is fixed in the normal position, regardless of the
position of the selector switch.
CAUTION
To help maintain maximum control of your vehicle, do not
use the cruise control when driving in heavy or varying
traffic, or on slippery (rainy, icy or snowcovered) or
winding roads.
Avoid vehicle speed increases when driving downhill. If the
vehicle speed is too fast in relation to the cruise control set
speed, cancel the cruise control then downshift the
transmission to use engine braking to slow down.

Page 184 of 304

STARTING AND DRIVING
169
Turning on the system
31L067
To operate the cruise control, push the main switch. This turns the
system on. The indicator light in the instrument cluster shows that
you can now set your desired cruising speed. Another push on the
switch will turn the system completely off.
When the ignition key is turned off, the main switch is also
automatically turned off. To use the cruise control again, push the
main switch again to turn it on.
CAUTION
To avoid accidental cruise control engagement, keep the main
switch off when not using the cruise control.
Setting at a desired speed
31L068
The transmission must be in ”D” or ”4” before you set the cruise
control speed.
Bring the vehicle to the desired speed, press the control lever
downward in the ”SET/COAST” direction and release it. This sets
the vehicle at that speed. Now you may take your foot off the
accelerator pedal. If you need acceleration for example, when
passing depress the accelerator pedal enough for the vehicle to
exceed the set speed. When you release the accelerator pedal, the
vehicle will return to the speed set prior to the acceleration.
Cancelling the preset speed
You can cancel the preset speed by either of the following:
a. Pulling the control lever in the ”CANCEL” direction.
b. Depressing the brake pedal.

Page 186 of 304

STARTING AND DRIVING
171
Cruise control failure warning
If the ”CRUISE” indicator light in the instrument cluster flashes
when using the cruise control, push the main switch to turn the
system off and then push it again to turn it on.
If any of the following conditions then occurs, there is some trouble
in the cruise control system.
The indicator light does not come on.
The indicator light flashes again.
The indicator light goes out after it comes on.
If this is the case, contact your Lexus dealer and have your Lexus
inspected.
ELECTRONICALLY MODULATED
AIR SUSPENSION
(U.S.A. ONLY)
This electronically modulated air suspension adjusts the
damping effect on the shock absorbers and the vehicle height.
This adjustment is automatically made in response to the driving
conditions to provide good riding comfort and stability in all
driving conditions.
(a) Vehicle height adjustment
31L015-3
This system maintains a stable vehicle height, regardless of
occupants and luggage weight. You can select one of the
following modes using a selector switch.

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