lexus LS400 1998 Electrical Components / LEXUS 1998 LS400 OWNER'S MANUAL (OM50498U)

AIR CONDITIONING AND AUDIO
126If quick heating or cooling is desired
Push the ”TEMP” or ”PASSENGER TEMP” button on either side
and hold it until ”MAX. HOT” or ”MAX. COLD” appears on the
display.
If manual fan speed control is desired
21L007-3
1
Fan speed at low 2
Fan speed at high
The fan speed can be set to your desired speed by pushing the
appropriate side of fan speed control button. The higher the fan
speed is, the more air is delivered. Pushing the ”OFF” button turns
off the fan.
To remove exterior windshield frost, use the high speed setting.If manual switching of air intake is desired
21L008-4
Each time you push the air intake control button, the mode changes
in order from the RECIRCULATED AIR mode to AUTOMATIC
mode to OUTSIDE AIR mode, then back to the RECIRCULATED
AIR mode. Each indicator light shows which mode is now selected.
1
RECIRCULATED mode If quick circulation of cooled air
is desired, select this mode.
2
AUTOMATIC mode When driving where the outside air is
dirty (i.e., when the vehicle running just in front of your vehicle
accelerates rapidly), the system changes automatically from
the OUTSIDE AIR mode to the RECIRCULATED mode.
3
OUTSIDE AIR mode The system will take fresh outside air
into the vehicle.

AIR CONDITIONING AND AUDIO
127 For normal use, it is best to keep the air intake control button set to
OUTSIDE AIR mode. If recirculated air is used during heating, the
windows will fog up more easily.
To change the sensitivity of the sensor switching between the
RECIRCULATED and OUTSIDE AIR in the AUTOMATIC
mode, push the air intake control button until you hear a beep.
The display changes as illustrated below.
21L044
Each time you push the ”TEMP” button, the sensitivity changes from
”+3” down to ”3”. If you do not operate any button for a few
seconds, the previous display returns.If manual onoff of the air conditioning is desired
Push the ”A/C” button to turn the air conditioning on and push it
again to turn the air conditioning off.
The air conditioning does not work if the outside temperature is
lowered down to around 0C (32F).
If the system is used for ventilation, heating in dry weather or
removing frost or exterior fog on the windshield, turn the air
conditioning off once it is no longer required. This will improve fuel
economy. The air conditioning can be used for yearround
automatic temperature control including cooling and dehumidifying
operation.
If the air conditioning compressor does not operate, the indicator of
the ”A/C” button will blink. If the indicator of the ”A/C” button
blinks even when the ”A/C” button is pushed again, have the
compressor checked by your nearest Lexus dealer.

AIR CONDITIONING AND AUDIO
128
(b) Windshield defogging and defrosting
21L009-3
To remove interior fog on the windshield
Push the”FRONT WINDSHIELD” button.
To remove frost or exterior fog on the windshield
1. Place the temperature control button at the maximum
temperature.
2. Push the ”FRONT WINDSHIELD” button.
3. Push the fan speed control button on the right side to obtain a
maximum air flow.
4. Leave the air conditioning onoff button off.When the ”FRONT WINDSHIELD” button is pushed while
operating in automatic mode, the air conditioning is set to operate
and the OUTSIDE AIR mode is set.
If you push the ”FRONT WINDSHIELD” button once again while
in the FRONT WINDSHIELD mode, the mode then returns to the
last mode used.
CAUTION
Do not use the ”FRONT WINDSHIELD” button during
cooled air operation in extremely humid weather. The
difference between the temperature of the outside air and that
of the windshield could cause the outer surface of the
windshield to fog up blocking your vision.
When you turn the ignition switch on after the removal and
installation of the battery terminal, the indicator light may flash and
the operating sound of the motor may be heard. This does not
indicate a malfunction.
You may hear the operating sound of the motor about 70 seconds
after the ignition switch is turned off. This is not also a malfunction.

AIR CONDITIONING AND AUDIO
129
(c) Air filter
The air filter may clog after long use and reduce air flow. You can
inspect the filter easily.
When you inspect and replace the air filter, be sure to turn off the fan.
21L010
1. Open the glovebox and remove the two covers.
21L011
2. Take out the air filter.
Inspect the lower surface of the filter. If it is just moderately dusty,
it may be cleaned by blowing compressed air from the lower surface.
Do not wash or oil the filter.
If it is dirty, it should be replaced. To maintain the air conditioning
efficiency, replace the air filter according to the maintenance
schedule. (For scheduled maintenance information, please refer to
the separate ”Owner’s Manual Supplement/Maintenance
Schedule”.)
NOTICE
Do not drive with the air filter removed, or the efficiency of air
conditioning may be lost.

AIR CONDITIONING AND AUDIO
130
(d) Operating tips
Make sure the air inlet grilles in front of the windshield are not
blocked by leaves or other obstructions.
If air flow control is not satisfactory, check the dashboard vents.
(See ”Center vents”, ”Side vents”, ”Lower vent” and ”Rear
vents”.)
To help cool down the interior after parking in the hot sun, drive
for the first few minutes with the windows open. After the excess
heat has blown away, close the windows.
When driving on dusty roads, close all windows. If dust thrown
up by the vehicle is still drawn into the vehicle after closing the
windows, it is recommended that the air intake control button be
left to the OUTSIDE AIR mode and the fan speed control button
be pressed to anywhere except the ”OFF” button.
If following another vehicle on a dusty road, or driving in windy
and dusty conditions, it is recommended that the air intake control
button be temporarily pressed in to the RECIRCULATED AIR
mode, which will close off the outside passage and prevent
outside air and dust from entering the vehicle interior.
Center vents
21L0121
The center vents may be opened or closed as shown.
Side vents
21L013
The side vents may be opened or closed as shown.

AIR CONDITIONING AND AUDIO
131
Lower vent
21L014
The lower vent may be opened or closed as shown.
Rear vents
21L015
The rear vents may be opened or closed as shown.

AIR CONDITIONING AND AUDIO
132
AUDIO SYSTEM
Quick reference for your audio system
20L041-2
The ”CD” button works only when your Lexus is equipped with an automatic changer.
The knobs made in Nakamichi are different from the illustration shown above. The operations are in accordance with the description
below.

AIR CONDITIONING AND AUDIO
133
1
Turning the system on and adjusting volume
(See page 134 for details.)
2
Stopping and ejecting a cassette tape
(See page 140 for details.)
3
Function buttons
1 6:Station selector buttons
(See page 138 for details.)
SCAN:Scan tuning
(See page 139 for details.)
P. SCAN: Preset scan tuning
(See page 139 for details.)
4
Display of functions in TAPE mode

:
Side change
(See page 141 for details.)
:DOLBY NR
(See page 140 for details.)
:Rewinding
(See page 141 for details.)

:Fast forwarding
(See page 141 for details.)
RPT:Automatic repeat
(See page 141 for details.)
SKIP:Automatic skip of blank portions of tape
(See page 141 for details.)
SCAN:Scan selection
(See page 142 for details.)
4
Display of functions in CD mode
:Disc selection
(See page 146 for details.)
:Reversing
(See page 147 for details.)

:Fast forwarding
(See page 147 for details.)
RPT:Automatic repeat
(See page 148 for details.)
RAND:Random access
(See page 148 for details.)
SCAN:Scan selection
(See page 146 for details.)
5
Mode selectors
(See page 134 for details.)
6
Cassette tape slot
(See page 140 for details.)
7
Automatic sound levelizer
(See page 136 for details.)
8
Tone and balance knobs
(See page 135 for details.)
9
Radio mode:Frequency tuning
(See page 137 or 139 for details.)
TAPE mode:Direct access to a desired program
(See page 142 for details.)
CD mode:Direct access to a desired program
(See page 147 for details.)

AIR CONDITIONING AND AUDIO
134
Using your audio system: some basics
This section describes some of the basic features of the Lexus audio
system. Some information may not pertain to your system.
Your audio system works when the ignition key is in the ”ACC” or
”ON” position.
NOTICE
To prevent the battery from being discharged, do not leave the
car audio on longer than necessary when the engine is not
running.
(a) Turning the system on and off
20L002-1
Push this knob to turn the audio system on and off. Turn this
knob to adjust the volume.
The system turns on in the last mode used.
20L042-2
Push ”AM”, ”FM1/2”, ”TAPE” or ”CD” to turn on that mode.
The selected mode turns on directly.
Push these buttons if you want to switch from one mode to another.
If the tape or disc is not set, the cassette player or compact disc player
does not turn on.
You can turn off the cassette player by ejecting the cassette tape. If
the audio system was previously off, then the entire audio system
will be turned off when you eject the cassette tape. If another
function was previously playing, it will come on again.

AIR CONDITIONING AND AUDIO
135
20L043
In the ”TAPE” or ”CD” mode, the applicable functions are
shown in the lowest part of the display. Push the switch just
below to turn on each function.
(b) Tone and balance
How good an audio program sounds to you is largely determined by
the mix of the treble, midrange, and bass levels. In fact, different
kinds of music and vocal programs usually sound better with
different mixes of treble, midrange, and bass.
A good balance of the left and right stereo channels and of the front
and rear sound levels is also important.
Keep in mind that if you are listening to a stereo recording or
broadcast, changing the right/left balance will increase the volume
of one group of sounds while decreasing the volume of another.
20L044-2
”BASS” knob: Use this knob to adjust lowpitched tones.
”MID” knob: Use this knob to adjust midpitched tones.
”TREBLE” knob: Use this knob to adjust highpitched tones.
”BALANCE” knob: Use this knob to adjust the sound balance
between the right and left speakers.
”FADER” knob: Use this knob to adjust the sound balance between
the front and rear speakers.