air condition LEXUS LX470 2007 Owner's Manual

178
3-1. Using the air conditioning system and defogger
■Using the automatic mode
Fan speed is adjusted automatically in accordance with the temperature setting and
ambient conditions. As a result, the following may occur.
●The system may switch automatically to recirculated mode when the coolest
temperature setting is selected in summer.
●Immediately after the switch is pressed, the fan may stop for a while until warm
or cool air is ready to follow.
●Cool air may flow to the area around the upper body when the heater is on.
■Using the system in recirculated air mode
The window will fog up more easily if the recirculated air mode is used for an
extended period.
■Window defogger feature
Recirculated air mode may automatically switch to outside air mode in situations
where the windows need to be defogged.
■Outside temperature approaches 32°F (0°C).
The air conditioning system may not operate even when is pressed.
■When the indicator light on flashes
Press and turn off the air conditioning system before turning it on once
more. There may be a problem in the air conditioning system if the indicator light
continues to flash. Turn the air conditioning system off and have it inspected by your
Lexus dealer.
■Automatic mode for air intake control
In automatic mode, the system detects exhaust gas and other pollutants and auto-
matically switches between outside air and recirculated air modes.
When the air conditioning is OFF, and th e fan is operating, turning the “AUTO”
mode ON will activate the air conditioning system.

179
3-1. Using the air conditioning system and defogger
3
Interior features
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The dif-
ference between the temperature of the outside air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the automatic air conditioning system on longer than necessary when
the engine is stopped.

180
3-1. Using the air conditioning system and defogger
Rear air conditioning controls
]
Using the automatic mode
Press or .
Use to adjust the desired temperature.
Adjusting the settings■ Adjusting the temperature setting
Use to adjust the desired temperature.
■ Adjusting the fan speed
Touch any switch of (decrease  increase).
Press to turn the fan off.
Automatic mode
Air flow control
Fan speed control
Temperature control
Off
Rear air conditioning ON/
OFF switch
STEP1
STEP2

181
3-1. Using the air conditioning system and defogger
3
Interior features
■Changing the air outlets
To u c h a n y s w i t c h o f .
Air flows to the upper body.
Air flows to the upper body and
feet.
Air flows to the feet.
warm air
cool air

182
3-1. Using the air conditioning system and defogger
Rear window and outside rear view mirror defoggers
■Operating conditions
The ignition key must be in the “ON” position.
CAUTION
■When the outside rear view mirror defoggers are on
Do not touch the rear view mirror surfac es, as they can become very hot and burn
you.
These features are used to defog the rear window, and to remove rain-
drops, dew and frost from the outside rear view mirrors.
■ Rear window defogger switch
ON/OFF
■ Outside rear view mirror defogger switch
ON/OFF

256
3-5. Other interior features
■Speech recognition information
The Lexus Link speech recognition systems use speech technology that is designed
to understand a wide range of speakers of American English. However, the technol-
ogy may not work as well if a regional or ethnic accent is encountered. If the speech
recognition system does not work properly, refer to the following.
●The system does not recognize your command properly if noise is preset. Per-
form the following to improve voice command recognition.
• Turn down or off the air conditioning system.
• Slow down to reduce wind noise.
• Close the windows and the moon roof to block outside noise.
• Have all occupants be quiet so that the system does not recognize their con- versation as a command.
●When to speak
Say a command within 5 seconds after the system prompts you to speak.
●How to speak
• Speak forcefully and clearly.
• Speak calmly and naturally.
• The driver should speak while facing forward, and the passenger should speak facing the inside rear view mirror.
• Avoid speaking with a rising intonati on. Use a flat or falling intonation.
●Tips for one-word commands
• The system recognizes only one word at a time for personal calling. (There
are some exceptions, such as “Advanced services” and “My number”.)
• When inputting the security codes or voice-activated keypad number, you
must say them one digit at a time. When inputting a phone number, the
speech recognition system can recogniz e 7, 10, and 11-digit numbers as well
as the number 911.

Maintenance and care4
259
4-1. Maintenance and care ......... 260Cleaning and protecting the vehicle exterior........................ 260
Cleaning and protecting the vehicle interior......................... 262 4-2. Maintenance........................... 265
Maintenance requirements............................ 265
General maintena nce .............. 267
Emission inspection and maintenance (I/M)
programs ................................... 270
4-3. Do-it-yourself maintenance.......................... 271
Do-it-yourself service precautions ................................. 271
Hood .............................................. 275
Engine compartment ............... 276
Tires ................................................. 292
Tire inflation pressure .............. 302
Wheels .......................................... 306
Air conditioning filter ............. 308
Wireless remote control battery ........................................ 309
Checking and replacing fuses ................................................ 311
Light bulbs.................................... 320

274
4-3. Do-it-yourself maintenance
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury.
■When working on the engine compartment
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, inverter, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
■When working near the electric cooling fan or radiator grille
Be sure the ignition is off. With the ignition in on, the electric cooling fan may auto-
matically start to run if the air conditioning is on and/or if the coolant temperature is
high.
(  P. 2 8 3 )
■When working on or under the vehicle
●Do not get under the vehicle with just the jack supporting it.
Always use automotive jack stands or other solid supports.
●Use eye protection to prevent flying or falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to
dirt in the air. Also a backfire could cause a fire in the engine compartment.

305
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may occur
and result in an accident cau sing death or serious injury.
●Excessive wear
●Uneven wear
●Poor handling
●Possibility of blowouts resulting from overheated tires
●Poor sealing of the tire bead
●Wheel deformation and/or tire separation
●A greater possibility of tire damage from road hazards
NOTICE
■When inspecting and adjusting tire inflation pressure
Be sure to reinstall the tire valve caps.
Without the valve caps, dirt or moisture could get into the valve and cause air leak-
age, which could result in an accident. If the caps have been lost, replace them as
soon as possible.

308
4-3. Do-it-yourself maintenance
Air conditioning filter
■Changing interval
Inspect and replace the air conditioning filter according to the maintenance sched-
ule. In dusty areas or areas with heavy traffic flow, early replacement may be
required. (For scheduled maintenance information, refer to the “Warranty and Ser-
vices Guide/Owner's Manual Supplement/Scheduled Maintenance”.)
■If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
NOTICE
■When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.
The air conditioning filter must be changed regularly to maintain air condi-
tioning efficiency.
■Information label
Contact your Lexus dealer for
further information when
replacing air conditioning filter.