automatic LEXUS RX330 2006 Repair Manual

AIR CONDITIONING
248“DUAL” button —
This switch is used to set the temperatures independently for
the driver’s seat and front passenger seat.
Pushing the button changes the mode from independent and
linked.

Independent mode: Temperatures can be set
independently for the driver’s seat and front passenger’s
seat. The indicator light will illuminate to show that the
independent mode has been selected. The indicator light
will come on to show that the independent mode has been
selected.
 Linked mode: The same temperature is set for the driver’s
seat and front passenger’s seat. The indicator light will turn
off to show that the simultaneous temperature setting mode
has been selected.
When the temperature for the front passenger’s seat is
changed in linked mode, the mode is changed automatically to
independent mode.
INFORMATION
Knowledge for the twotemperature selector operation
This air conditioning system has two independent
temperature selectors: left and right (for the use of
driver and front passenger respectively).
 There are cases where the temperature of the airflow
may not accurately correlate on the driver and front
passenger side according to circumstances, even if
the left and right temperature selectors are set at the
same temperature. If this situation occurs, use the
fine tune operation to adjust the air temperature on
one side.
 There are cases where one or both of the airflow
temperatures may not accurately correlate with the
set temperature according to circumstances, when
the airflow temperature settings on the left and right
are substantially different. For example, if the left
controller is set at central or neutral temperature
while the right one is set at maximum heating or
maximum cooling, or vice versa. If this situation
occurs, use the fine tune operation to adjust the air
temperature on each side.

AIR CONDITIONING
249
Driver side setting air flow
Passenger side setting air flow
Mixed air flowSETTING OPERATION — manual control
When one of the manual control buttons is depressed
while operating in automatic mode, the operation
corresponding to the depressed button is set. Other
conditions continue to be adjusted automatically.
If manual air flow selection is desired —
The outlets from which air is delivered can be selected
manually by
pushing the button. The function of each mode is
as follows:
1Panel — Air flows mainly from the instrument panel vents
and rear vents.
2Bilevel — Air flows from both the floor vents, instrument
panel vents and rear vents.
When you set the temperature selector setting at about
the middle in automatic operation, warm air flows out of
the floor vents and relatively low−temperature air flows
out of the instrument panel vents and rear vents.

AIR CONDITIONING
251
If manual switching of air intake is desired —
The air intake control button is used to switch the air intake
between the OUTSIDE AIR mode and RECIRCULATED AIR
mode.
With the button in the OUTSIDE AIR mode, the indicator light
will turn off and the system will take fresh outside air into the
vehicle.
If quick circulation of cooled air is desired, push the air intake
control
button for RECIRCULATED AIR. The indicator light will
come on.
For normal use, it is best to keep the air intake control button
set to the OUTSIDE AIR mode. If recirculated air is used during
heating, the windows will fog up more easily. To prevent fogging up of the windshield, the air intake mode
may change automatically to the OUTSIDE AIR mode
depending on the condition of the air conditioning system.
For example, when the ambient temperature is low, the air
intake mode may change automatically to the OUTSIDE AIR
mode. This is not a malfunction.
When the air conditioning is ON, if the engine coolant
temperature becomes extremely high, the RECIRCULATED
AIR mode is automatically selected. This is not a malfunction.
When
the engine coolant temperature is lowered, the previous
mode resumes.
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 0 C (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 year− round
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
252If the engine coolant temperature becomes extremely high, the
air conditioning may shut off automatically to resolve
emergency situation for engine cooling. This is not a
malfunction. When the engine coolant
temperature is lowered,
the air conditioning comes on automatically.
(b) Windshield defogging and defrosting
To remove interior fog on the windshield —
Push the windshield air flow button.
To remove frost or exterior fog on the windshield —
1. Push the “TEMP” button to set the maximum temperature.
2. Push the windshield air flow button.
3. Push the fan speed control button on the right side to obtain
a maximum air flow.
4. Leave the “A/C” button off.
When the windshield air flow button is pushed, air flows mainly
from the windshield vents and turns on the defogging function
with the purpose of clearing the front view.
Pushing this button once again returns the air flow mode to the
last one used.

AIR CONDITIONING
253
This button allows the air intake to select the OUTSIDE AIR
mode automatically. This is to clean up the front view more
quickly. If you want to return the setting to the
RECIRCULATED
AIR mode, push the air intake control button
once again.
Push the “A/C” button for dehumidified heating or cooling. This
setting clears the front view more quickly.
CAUTION
Do not use the windshield air flow 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.
(c) Operating tips
 To cool off your Lexus after it has been parked in the hot sun,
drive with the windows open for a few minutes. After the
excess heat has blown away, close the windows. This vents
the hot air, allowing the air conditioning to cool the interior
more quickly.
 Make sure the air intake grilles in front of the windshield are
not blocked (by leaves or snow, for example).
 If air flow control is not satisfactory, check the side vents and
rear vents. (See “(d) Side vents and rear vents”.)
 On humid days, do not blow cold air on the windshield. The
windshield could fog up because of the difference in air
temperature on the inside and outside of the windshield.
 Keep the area under the front seats clear to allow air to
circulate throughout the vehicle.
 On cold days, set the fan speed to high for a minute to help
clear the intake ducts of snow or moisture. This can reduce
the amount of fogging on 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 set to the OUTSIDE AIR mode to take in
the fresh air and the fan speed selector to any setting except
OFF.

AIR CONDITIONING
254
If following another vehicle on a dusty road, or driving in
windy and dusty conditions, it is recommended that the air
intake be temporarily set to the RECIRCULATED AIR
mode, which will close off the outside passage and prevent
outside air and dust from entering the vehicle interior.
Heating
For best results, set controls to:
For automatic operation —
Push in the “AUTO” button.
Temperature — To the desired temperature
Air intake — OUTSIDE AIR
Air conditioning — OFF
For manual operation —Fan speed — To the desired fan speed
Temperature — Towards high temperature
Air intake — OUTSIDE AIR
Air flow — FLOOR
Air conditioning — OFF
 For quick heating, select RECIRCULATED AIR for a few
minutes. To keep the windows from fogging, select
OUTSIDE AIR after the vehicle interior has been warmed.
 Push the “A/C” button on for dehumidified heating.
 Choose floor/windshield air flow to heat the vehicle interior
while defrosting or defogging the windshield. Air conditioning
For best results, set controls to:
For automatic operation —
Push in the “AUTO” button.
Temperature — To the desired temperature
Air intake — OUTSIDE AIR
Air conditioning — ON
For manual operation —Fan speed — To the desired fan speed
Temperature — Towards low temperature
Air intake — OUTSIDE AIR
Air flow — PANEL
Air conditioning — ON
 For quick cooling, select RECIRCULATED AIR for a few
minutes.

AIR CONDITIONING
255
Ventilation
For best results, set controls to:
For automatic operation —
Push in the “AUTO” button.
Temperature — Towards low temperature
Air intake — OUTSIDE AIR
Air conditioning — OFF
For manual operation —Fan speed — To the desired fan speed
Temperature — Towards low temperature
Air intake — OUTSIDE AIR
Air flow — PANEL
Air conditioning — OFF
Defogging and defrosting
— The inside of the windshield
For best results, set controls to:
For automatic operation —Temperature — Towards high temperature to heat;
low temperature to cool
Air intake — OUTSIDE AIR
Air flow — WINDSHIELD
For manual operation —
Fan speed — To the desired fan speed
Temperature — Towards high temperature to heat;
low temperature to cool
Air intake — OUTSIDE AIR
Air flow — WINDSHIELD
When the windshield air flow button is pushed, air flows mainly
from the windshield vents and turns on the defogging function
with the purpose of clearing the front view.
Pushing this button once again returns the air flow mode to the
last one used.
This button allows the air intake to select OUTSIDE AIR mode
automatically. This is to clean up the front view more quickly.
If you want to return the setting to RECIRCULATED AIR mode,
push the air intake control button once again.
Push the “A/C” button for dehumidified heating or cooling. This
setting clears the front view more quickly.
 On humid days, do not blow cold air on the windshield — the
difference between the outside and inside temperatures
could make the fogging worse.

AIR CONDITIONING
256— The outside of the windshield
For best results, set controls to:
For automatic operation —
Temperature — Towards high temperature
Air intake — OUTSIDE AIR
Air flow — WINDSHIELD
For manual operation —
Fan speed — To the desired fan speed
Temperature — Towards high temperature
Air intake — OUTSIDE AIR
Air flow — WINDSHIELD
When the windshield air flow button is pushed, air flows mainly
from the windshield vents and turns on the defrosting function
with the purpose of clearing the front view.
Pushing this button once again returns the air flow mode to the
last one used. This
button allows the air intake to select OUTSIDE AIR mode
automatically. This is to clean up the front view more quickly.
If you want to return the setting to RECIRCULATED AIR mode,
push the air intake control button once again.
Push the “A/C” button for dehumidified heating or cooling. This
setting clears the front view more quickly.
 To heat the vehicle interior while defrosting the windshield,
choose floor/windshield air flow.


AUDIO
263
1Radio mode:Scan tuning
(See page 271 for details.)
CD mode: Scan selection
(See page 279 for details.)
2Ejecting a CD
(See page 277 for details.)
3CD slot
(See page 277 for details.)
4Display of functions in TAPE or CD mode
RAND: Random access
(See page 280 for details.)
RPT: Automatic repeat
(See page 276 or 280 for details.)
:DOLBY NR
(See page 275 for details.)
: Side change
(See page 275 for details.)
 : Rewinding or reversing
(See page 275 or 279 for details.)
 : Fast forwarding
(See page 275 or 279 for details.)
5Station selector and function buttons
(See page 270 for details.)
6MUTE button
(See page 265 for details.)
7Traffic announcement
(See page 273 for details.)
8Program type
(See page 272 for details.)
9TUNE/AUDIO CONTROL knob
(See page 267 for details.)
10Radio mode: Radio text message
(See page 273 for details.)
CD mode: CD text
(See page 281 for details.)
11Mode selectors
(See page 265 for details.)
12Cassette tape slot
(See page 274 for details.)
13Stopping and ejecting a cassette tape
(See page 274 for details.)
14Turning the system on and adjusting the volume
(See page 264 for details.)
15Radio mode:Seek tuning
(See page 271 for details.)
TAPE mode: Direct access to a desired program
(See page 276 for details.)
CD mode: Direct access to a desired track
(See page 279 for details.)

AUDIO
267
Adjusting the sound balance and selecting the listening seat
position is also important for good an audio sound.
Keep in mind that if you are listening to a stereo recording or
broadcast, changing the sound balance or listening seat
position will increase the volume of one group of sounds while
decreasing the volume of another.
Each time you push the “AUDIO CONTROL” knob, the
mode changes as in the following.
POS:
Select one of the following listening seat positions.
1: Front seat priority mode
2: Rear seat priority mode
3: All seats mode
4: Driver seat priority mode
BAS: Adjusts low− pitched tones.
MID: Adjusts mid− pitched tones.
TRE: Adjusts high− pitched tones.
FAD: Adjusts the sound balance between the front and rear
speakers.
BAL: Adjusts the sound balance between the right and left
speakers.
ASL: Turns on or off the Automatic Sound Levelizer.