2010 Lexus GX460 cooling

384
GX460_U.S.A. (OM60E69U)
3-1. Using the air conditioning system and defogger
Front automatic air conditioning system
Air outlets and fan speed are automati cally adjusted according to the tem-
perature setting.
Vehicles with a navigation system
Refer to the “Navigation System Owner’s Manual”.
Vehicles without a navigation system
Control panel (vehicles without a rear automatic air conditioning
system)
Automatic mode button
Off button
Cooling and dehumidificatio n function on/off button
Air outlet selector button
Micro dust and pollen filter 
mode button
Passenger’s side temperature 
control button
Dual mode button
Outside/recirculated air mode button
Windshield defogger button
Driver’s side

temperature control button
Fan speed control button

385
3-1. Using the air conditioning system and defogger
3
Interior features
GX460_U.S.A. (OM60E69U)
Control panel (vehicles with a re ar automatic air conditioning sys-
tem)
Automatic mode button
Off button
Cooling and dehumidificatio
n function on/off button
Air outlet selector button
Micro dust and pollen filter mode button
Front passenger’s side temperature control button3 zone mode button
Outside/recirculated air mode button Windshield defogger button
Driver’s side temperature

control button
Fan speed control button
Rear automatic air 
conditioning on/off button
Rear passenger’s side 
temperature control 
button

386
3-1. Using the air conditioning system and defogger
GX460_U.S.A. (OM60E69U)
Multi-information display (Accessory meters)
Driver’s side temperature displayFront passenger’s side temperature display
Rear passenger’s side temperature display (type B only)
Cooling and dehumidification function on/off display
Fan speed displayAir outlet display

398
3-1. Using the air conditioning system and defogger
GX460_U.S.A. (OM60E69U)
■Switching between outside air and recirculated air modes
Recirculated air mode or outside air mode may be automatically switched to in
accordance with the temperature setting, the inside temperature, outside tempera-
ture, etc.
■Using the system in recirculated air mode
The windows will fog up more easily if the recirculated air mode is used.
■Window defogger feature
Recirculated air mode may automatically switch to
(outside air) mode in situ-
ations where the windows need to be defogged.
■Automatic mode for air intake control (vehicles with a rear automatic air condi-
tioning system)
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 the fan is operating, turning automatic mode
on will activate the air conditioning system.
■Micro dust and pollen filter
●In order to prevent the windows from fogging up when the outside air is cold,
the following may occur.
• Outside air mode does not switch to (recirculated air) mode.
• The air conditioning syst em operates automatically.
• The operation cancels after 1 minute.
●In rainy weather, the windows may fog up. Press .
■When outside air temperature is below 32 F (0 C)
The cooling and dehumidification function may not operate even when the “A/C”
button is pressed.
■When the “A/C ON” in the multi-information display (accessory meter) flashes
Press
the “A/C” button and turn off the cooling and dehumidification function and
turn it on again. There may be a problem in the air conditioning system if the indica-
tor light continues to flash. Turn the air co nditioning system off and have it inspected
by your Lexus dealer.

529
3-7. Other interior features
3
Interior features
GX460_U.S.A. (OM60E69U)
■Items unsuitable for the cool box
●Drinks in unsealed containers
●Fragile items, perishables or anything with strong odor
●Owner’s manual, electronic devices, CDs, etc.
■When the indicator light flashes
The cool box is not operated when any of the following conditions occurs.
●When the air conditioning system is off 
Turn the air conditioning system on also turns on the cool box.
●When outside air temperature is about 32 F (0 C) or below.
●When the “A/C ON” in the multi-information display (accessory meter) 
(  P. 3 8 4 ) a l s o f l a s h e s 
Press the “A/C” button to turn off the cooling and dehumidification function and
turn it on again.
If the indicator light continues to flash, there may be a malfunction in the system.
Turn the air conditioning system off and have it inspected by your Lexus dealer.
■When using the cool box lid as an armrest
Slide the cool box lid forward or backward as
needed. Slide the lid while pulling up the
upper lever to release the lock.

544
3-7. Other interior features
GX460_U.S.A. (OM60E69U)
■The power outlet can be used when
The engine is running.
■The indicator light changes according to the maximum available capacity as fol-
lows:
■When the power outlet is in operation
The sound of the cooling fan may be heard from the right side of the luggage com-
partment. This is normal and does not indicate a malfunction.
■If the engine is started with the power outlet main switch on
The maximum capacity of the power supply may decrease to below the standard, or
may be cut off completely, even when the vehicle is stationary.
■The protection circuit may be activated to cut the power supply if any of the fol-
lowing conditions apply:
●The engine is started with the power outlet main switch on.
●Use of electrical appliances exceeding the maximum capacity is attempted.
●A sound may be heard when the protection circuit is activated. This is normal
and does not indicate a malfunction.
●Electrical appliances, which consume power exceeding 100 W, have been used
continuously for a long time period.
●The total power usage by all electrical features (headlights, air conditioning,
etc.) has exceeded the total vehicle maximum for an extended period of time.
120 V AC/400 W
120 V AC/100 W

605
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60E69U)
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,
observe the following precautions:
■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, radiator , exhaust manifold, etc. right after driv-
ing 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 fans or radiator grille:
Be sure the “ENGINE START STOP” switch is off. 
With the “ENGINE START STOP” switch in IGNITION ON mode, the electric
cooling fans may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. ( P. 6 1 7 )
■Safety glasses
Wear safety glasses to prevent flying or fall ing material, fluid spray, etc. from getting
in your eyes.

608
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
Engine compartment
Engine coolant reservoir
( P. 615)
Engine oil level dipstick 
( P. 610)
Engine oil filler cap 
( P. 611)
Brake fluid reservoir 
( P. 6 1 8 )Fuse box ( P. 645)
Battery ( P. 622)
Radiator ( P. 617)
Condenser ( P. 617)
Electric cooling fan
Washer fluid tank ( P. 6 2 6 )
Power steering fluid reservoir 
( P. 6 2 0 )