buttons lexus LS400 1994 Repair Manual Information / 1994 LS400: AIR CONDITIONING AND AUDIO

AIR CONDITIONING AND AUDIO
Front windshield buttonTemperature
(in degrees fahrenheit
or centigrade)
Fan speed control buttons
Low speed
Medium speed
High speed
Air conditioning on-off button
OFF button
Automatic button
Temperature control button
Air intake control buttonAir flow control buttons
Face
Bi-levelFloor
Floor/Windshield
88
AUTOMATIC AIR CONDITIONING CONTROLS

AIR CONDITIONING AND AUDIO
90The automatic air conditioning automatically maintains the set
temperature.
This air conditioning features automatic fan speed and air flow
control which automatically selects the most suitable fan
speed and air flow to control the temperature. The ignition key
must be in the “ON” position.
You may use manual controls to override the automatic
settings.
(a) Climate control
SETTING OPERATION − automatic control
1. Press in the
(AUTO) button.
Air flow quantity, switching of the diffusers, on-off of the air
conditioning, and switching of the air intake between
RECIRCULATED AIR and OUTSIDE AIR are automatically
adjusted. The operation status is shown by each indicator.
When one of the manual control buttons is depressed while
operating in automatic mode, the operation corresponding to
the button depressed is set. Other conditions continue to be
adjusted automatically.
2. Press in the
(TEMP) button and hold it until the
desired temperature is displayed.
(TEMP) button is used to set the desired passenger
compartment temperature. The temperature of air delivered to
the passenger compartment will be controlled automatically
according to the setting. The figures on the panel indicate
degrees Fahrenheit or Centigrade.SETTING OPERATION − manual control
If manual air flow selection is desired −
The outlets from which air is delivered can be selected
manually by pressing in the appropriate air flow control button.
The function of each button is as follows:
FACE button − Directs air flow at face level.
BI-LEVEL button − Directs air flow at face level and at
floor level front and rear. Except in ventilation, the air to the floor
is slightly warmer than air to the face.
FLOOR button − Directs air flow mostly at floor level
frIf cold adont and rear.
FLOOR / WINDSHIELD button − Directs air flow to the
windshield and front side windows as well as floor level front
and rear.
FRONT WINDSHIELD button − Directs air flow mostly
to the windshield and front side windows.
When this button is depressed 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.

AIR CONDITIONING AND AUDIO
92
(b) Windshield defogging and defrosting
See “(a) Climate control” for details on each button.
To remove interior fog on the windshield −
1. Press in the
(WINDSHIELD) button of the air flow
control buttons.
2. Turn on the
(A / C) button.
3. Set the OUTSIDE AIR mode.
To remove frost or exterior fog on the windshield −
1. Place the temperature control button at the maximum
temperature.
2. Press in the
(WINDSHIELD) button of the air flow
control buttons.
3. Press in the
(Hi) button of the fan speed control button.
4. Leave the air conditioning on-off buttons off.
(c) Operating tips

Be 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” 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.

The air filter may clog after long use and reduce the air flow.
Have it inspected by your Lexus dealer according to the
maintenance schedule.

AIR CONDITIONING AND AUDIO
“PWR. VOL” knob
(For turning radio on
and adjusting volume)
“AM” button
(For turning radio on
and selecting AM)
“FM1” button
(For turning radio on
and selecting FM)
“FM2” button
(For turning radio on
and selecting FM)
Radio display
Station selector
buttons (1-6)
“FADER” knob
(For front and rear
sound balance)
“BALANCE” knob
(For right and left
sound balance)
“TREBLE” knob
(For treble control)
“MID” knob
(For mid range control)
“BASS” knob
(For bass control)
“SCAN” button
(For preset scan tuning
and scan tuning)
“TUNE SEEK” button
(For frequency tuning)
Without compact disc player
95
Radio operation

AIR CONDITIONING AND AUDIO
With compact disc player
“PWR. VOL” knob
(For turning radio on
and adjusting volume)
“AM” button
(For turning radio on
and selecting AM)
“FM 1/2” button
(For turning radio on
and selecting FM)
Radio display
Station selector
buttons (1-6)
“FADER” knob
(For front and rear
sound balance)
“BALANCE” knob
(For right and left
sound balance)
“TREBLE” knob
(For treble control)
“MID” knob
(For mid range control)
“BASS” knob
(For bass control)
“TUNE SEEK” button
(For frequency tuning)
“SCAN” button
(For preset scan tuning
and scan tuning)
96

AIR CONDITIONING AND AUDIO
98Push the
(SCAN) button for longer than 2 seconds. With
“SCAN” on the display, the radio will automatically seek out a
station of higher frequency, hold it for 5 seconds and scan to
the next. To continue listening to the broadcast of your choice,
simply push the
(SCAN) button once again.
Manual tuning: Push the
(TUNE) button within 0.5 second.
Each time you push the button, the radio will step up or down
to another frequency where stations could exist.
(c) Presetting a station
1. Tune in the desired station. (See “(b) Selecting a station”.)
2. Push one of the station selector buttons and hold it until a
beep is heard. This sets the station to the button and the button
number will appear on the display.
Each button can store one AM station and two FM stations. To
change the preset station to a different one, follow the same
procedure.
The preset station will be cancelled when the power source is
severed (battery disconnected, burnt fuse, etc.).
(d) Adjusting the tone
To adjust the low-pitched tone, push the “BASS” knob (if
depressed) and turn it.
To adjust the middle-pitched tone, push the “MID” knob (if
depressed) and turn it,
To adjust the high-pitched tone, push the “TREBLE” knob (if
depressed) and turn it.
(e) Adjusting the sound balance
To balance the sound between the right and left speakers,
push the “BALANCE” knob (if depressed) and turn it.
To balance the sound between the front and rear speakers,
push the “FADER” knob (if depressed) and turn it.
Radio operating tips
The antenna automatically extends to full height when the
radio and ignition are turned on and retracts when either is
turned off.
CAUTION:
Before extending the antenna, confirm that no one is close
enough to get injured.
NOTICE:
To prevent damage to the antenna, make sure it is
retracted before running your vehicle through an
automatic car wash.

AIR CONDITIONING AND AUDIO
108(d) Selecting a program
Automatic program selection: Use for direct access to a
desired program.
Push either of the
(TRACK) buttons and hold it until
the desired program track number appears on the display. As
you release the button, the player will start playing the selected
program from the beginning.
Manual program selection:
Push the
(FF) button and hold it to fast forward the disc.
Releasing the button starts the play from that position.
Disc scan selection: Use for disc-to-disc scanning.
Push the
(SCAN) button. With “SCAN” on the display, the
program at the beginning of each disc will be played for 10
seconds. To continue listening to the program of your choice,
push the
(CD) button.
(e) Other compact disc player functions
“RPT” button: Use for automatic repeat of the program
currently being listened to.
Push the
(RPT) button while the program is being played.
As this is done, “RPT” will appear on the display. When the
program is finished, the disc will automatically go back to the
beginning of the program and the program will be played again.
To cancel it, push the button once again.“RAMDOM” button: Use for automatic program selection and
play by the system.
When the
(RANDOM) button is depressed. “RND”
appears on the display and the system selects a program in the
disc which is set and plays it. To cancel it, push the button once
again.
When a program is skipped or the system is inoperative, push
the
(CD) button to reset.
“CD CMP” button: Use for listening to music in noisy
situations.
Push the
(CD CMP) button and hold it until a beep is
heard. “CMP” appears on the display. Small sounds are
emphasized and large sounds muted slightly so that every
sound can be heard clearly.
This function works only in the “CD” mode. To cancel it, push
the button once again and hold it until a beep is heard.
(f) If the player malfunctions
If “WAIT” appears on the display, audio signals of the disc
cannot be read or the system has trouble. Push the
(CD)
button once again.
If the player does not operate, check that the disc surface is not
soiled or damaged. If the disc is O.K., the following two causes
are possible.

Condensation may have occurred on the internal
mechanism of the player.
Open the trunk to let air circulate.

AIR CONDITIONING AND AUDIO
111
Anti-theft system
To deter theft of your radio, the system is designed so that
the radio unit becomes inoperable if it is stolen from the
vehicle.
The system is not preset at the factory. You must input a
three-digit identification number decided by you.
NOTICE:
If you pushed any wrong buttons on the anti-theft
system, the following messages will appear on the
display.

“Err” −You have pushed wrong buttons.

“1-9” −Indicates the number of errors you have
made. You may make up to nine errors, but
no more!

“HELP”−The number of errors you can make was
exceeded. The audio system is completely
inoperable. Contact your Lexus dealer.
(a) Setting the anti-theft system
1. Make sure the radio unit is turned off with the ignition switch
in “ACC”.
2. While holding the (1) and (6) buttons in, push and
hold the “PWR.VOL” knob in until “SEC” appears on the
display.
Tape operation
indicator display
3. Press the (1) button while holding upper side of the (TUNE SEEK) button in. “− − −” and the tape operation
indicator will appear on the display.

AIR CONDITIONING AND AUDIO
11 2
4. Input your iden tification number by pressing buttons (1), (2) and (3) the desired number of times. Use the (1) button or the first digit, the (2) button for the
second digit and the (3) button for the last digit. For
example, if your number is 345, press the (1) button four
times, the (2) button five times and the (3)
button six times. (pressing once will display “0”.) If the display
returns to “− − −” while inputting, try again.
We recommend that your identification number be associated
with something easy to remember. In case you are unsure of
the number, write it in a notebook you normally carry. Do not
leave it in your vehicle.
Error times (1-9)
5. With your identification number appearing on the display,
press the (SCAN) button and hold it in until “SEC”
appears on the display. “SEC” will go off to indicate the system
is set. If invalid buttons have been used, “Err” will appear on the
display before “SEC” appears. Try again from step 3.

AIR CONDITIONING AND AUDIO
11 3
Indicator light
Once the system is set, the indicator light turns on and off with
the ignition switch in “OFF” and “SEC” will appear each time
the key is turned to the “ACC” position.
To change the identification number for some reason, cancel
the system (See “(b) Cancelling the anti-theft system”.) and set
it again with a new number.
The system will be activated if the electrical power source is
disconnected from the radio unit. When the system is
activated, the audio system cannot be turned on even after the
power supply resumes and “SEC” will appear on the display.
If this happens, such as when the battery is discharged, see
“(c) If the anti-theft system is activated”.(b) Cancelling the anti-theft system
1. Follow steps 1 to 4 described in “(a) Setting the anti-theft
system”.
2. With your identification number appearing on the display,
press the (SCAN) button and hold it in until “− − −” appears
on the display. “− − −” will go off to indicate the system is
cancelled. If invalid buttons have been used. “Err” will appear
on the display and “SEC” appears. Try again from step 3 in “(a)
Setting the anti-theft system”.
The number displayed with “Err” indicates how many errors
you have made. You may make up to nine errors, but no more!