2011 LEXUS RX350 cooling

40
Air Conditioning System
(with navigation system)
nUsing the automatic mode
Press to turn on the airflow and to adjust the temperature.
nAdjusting the temperature
n To simultaneously adjust the driver's side and passenger's side temperature settings
Select to turn the “DUAL” indicator off ( ) and then press .

n To individually adjust the driver's side and passenger's side temperature settings
Select or press to turn the “DUAL” indicator on ( ) and then press or .
nTo turn off the airflow
Press and hold “∨” on until the airflow turns off.
Dual mode button
Passenger side temperature display
Fan speed display
Outside air/recirculated air mode
button
Passenger side temperature control
Air outlet selector button
Windshield defogger
Automatic mode button
Driver side temperature control
Fan speed control button/“OFF”
button
Cooling and dehumidification function
on/off button
Driver side temperature display
Air outlet display
1
2
3
4
5
6
7
8
9
10
11
12
13
89
19
1595
10

51
Air Conditioning System
(without navigation system)
nUsing the automatic mode
Press to turn on the airflow and to adjust the temperature.
nAdjusting the temperature
n To simultaneously adjust the driver's side and passenger's side temperature settings
Press to turn the “DUAL” indicator off ( ) and then press .
nTo individually adjust the driver's side and passenger's side temperature settings
Press or to turn the “DUAL” indicator on ( ) and then press or .
nTo turn off the airflow
Press and hold “∨” on until the airflow turns off.
Passenger side temperature display
Passenger side temperature control
Cooling and dehumidification function
on/off button
Outside air/recirculated air mode
button
Windshield defogger
Air outlet selector button
Driver side temperature control
Fan speed control button/“OFF”
button
Automatic mode button
Dual mode button
Driver side temperature display
1
2
3
4
5
6
7
8
9
10
11
97
107
10272
8

274
3-1. Using the air conditioning system and defogger
Automatic air conditioning system
Air outlets and fan speed are automatically adjusted according to the tem-
perature setting.
Vehicles with a navigation system
Owners of models equipped with a navigation system should refer to
the “Navigation System Owner’s Manual”.
Vehicles without a navigation system
Automatic
mode
button
Driver’s side temperature
display
Air outlet selector button
Fan speed
control
button/
“OFF” button
Air outlet displayFan speed display
Passenger’s side temperature
display
Driver's side temperature
control buttons
Cooling and dehumidification function
on/off button
Outside/recirculated air mode button
Windshield defogger
button
Passenger’s side temperature control buttons
Dual mode
button

280
3-1. Using the air conditioning system and defogger
nWhen outside air temperature is below 32°F (0°C)
The cooling and dehumidification function may not operate even when is
pressed.
nWhen the indicator light on flashes
Press to turn off the cooling and dehumidification function and turn it on
again. 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.
nAir conditioning odors
lDuring use, various odors from inside and outside the vehicle may enter into
and accumulate in the air conditioning system. This may then cause odor to be
emitted from the vents.
lTo reduce potential odors from occurring:

459
4-3. Do-it-yourself maintenance
4

Maintenance and care
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:
nWhen working on the engine compartment
lKeep hands, clothing and tools away from the moving fan and engine drive belt.
lBe 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.
lDo not leave anything that may burn easily, such as paper or rags, in the engine
compartment.
lDo not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
lBe extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
nWhen working near the electric cooling fan 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 fan may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. (→P. 4 7 2 )
nSafety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in the eyes.
NOTICE
nIf 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.

463
4-3. Do-it-yourself maintenance
4

Maintenance and care
Engine compartment
Engine oil filler cap
(→P. 466)
Engine oil level dipstick
(→P. 466)
Battery (→P. 4 74 )
Brake fluid reservoir
(→P. 4 7 2 )
Fuse box (→P. 4 9 8 )
Engine coolant reservoir
(→P. 470)
Condenser (→P. 4 7 2 )
Radiator (→P. 4 7 2 )
Electric cooling fans
Washer fluid tank
(→P. 477)

471
4-3. Do-it-yourself maintenance
4

Maintenance and care
nIf the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, radiator cap, drain cock and water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling systems.
CAUTION
nWhen the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing burns or other injuries.
NOTICE
nWhen adding engine coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water
and antifreeze must be used to provide proper lubrication, corrosion protection
and cooling. Be sure to read the antifreeze or coolant label.
nIf you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.

501
4-3. Do-it-yourself maintenance
4

Maintenance and care
Fuse layout and amperage ratings
nEngine compartment
FuseAmpereCircuit
1RDI FAN NO. 180 AElectric cooling fans
2RR DEF50 ARear window defogger
3AIR SUS50 A
4HTR50 AAir conditioning system
5SPARE30 A
6SPARE40 A
7ABS NO. 230 AAnti-lock brake system
8H-LP CLN30 AHeadlight cleaner
9PBD30 APower back door system
10ST30 AStarter system