2010 Lexus GS350 air filter

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GS_G_U (OM30C80U)
June 29, 2011 10:30 am
4-1. Maintenance and care
Cleaning and protecting 
the vehicle exterior.................. 430
Cleaning and protecting 
the vehicle interior .................... 433
4-2. Maintenance
Maintenance 
requirements............................... 436
General maintenance ............... 438
Emission inspection and 
maintenance (I/M) 
programs ....................................... 4414-3. Do-it-yourself maintenance
Do-it-yourself service 
precautions .................................. 442
Hood ................................................. 445
Positioning a floor jack............... 446
Engine compartment.................. 448
Tires ................................................... 463
Tire inflation pressure................. 473
Wheels ............................................. 477
Air conditioning filter.................. 479
Electronic key battery ................ 482
Checking and replacing 
fuses ................................................ 484
Headlight aim ............................... 509
Light bulbs ........................................ 512
5-1. Essential information
Emergency flashers ................... 520
If your vehicle needs 
to be towed ................................... 521
If you think something is 
wrong ............................................ 530
Fuel pump shut off system ......... 531
Event data recorder.................... 532
4Maintenance and care
5When trouble arises

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GS_G_U (OM30C80U)
June 29, 2011 10:30 am
3-2. Using the air conditioning system and defogger
Automatic air conditioning system
Airflow and outlets are automatically adjusted according to the tempera-
ture setting.
Press
to display the air conditioning operation screen.
The illustrations below are for vehicles with navigation system.
The display and button positions will differ depending on the type of the sys-
tem.
Automatic mode Driver’s side 
temperature display
Fan speed display
OffAirflow display Air conditioning operation
screen display button
Passenger’s side 
temperature 
display
Micro dust and pollen filter Driver’s side 
temperature control Air conditioning 
ON/OFF switch
Outside air or recirculated mode
Windshield defoggerPassenger’s side 
temperature control Dual operation switch

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3-2. Using the air conditioning system and defogger
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Interior features
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Micro dust and pollen filter
Press .
Outside air mode switches to
(recirculated air) mode. Pol-
len is removed from the air and the
air flows to the upper part of the
body.
Usually the system will turn off
automatically approximately 3
minutes later.
To stop the operation, press
again.
Adjusting the sensitivity of the air intake control in automatic mode
Press until the smog sensor screen appears while the
vehicle is stopped.
Touch any switch of “LO” to “HI”
(lower sensitivity higher sensi-
tivity) on the operating screen.
STEP1
STEP2

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3-2. Using the air conditioning system and defogger
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
■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 .
• The air conditioning system operates automatically.
• The operation cancels after 1 minute.
●In rainy weather, the windows may fog up. Press .
■When the indicator light on “A/C” flashes
Touch “A/C” 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 contin-
ues to flash. Turn the air conditioning system off and have it inspected by your Lexus
dealer.
■Air conditioning odors
●During 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.
●To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time
immediately after the air conditioning system is started in automatic mode.
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The differ-
ence 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 12 volt battery discharge
Do not leave the automatic air conditioning system on longer than necessary when
the engine is off.

Maintenance and care4
429
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
4-1. Maintenance and care
Cleaning and protecting 
the vehicle exterior............ 430
Cleaning and protecting 
the vehicle interior .............. 4334-2. Maintenance
Maintenance 
requirements........................ 436
General maintenance .......... 438
Emission inspection and 
maintenance (I/M) 
programs ................................ 441
4-3. Do-it-yourself maintenance
Do-it-yourself service 
precautions ........................... 442
Hood .......................................... 445
Positioning a floor jack ......... 446
Engine compartment ........... 448
Tires............................................ 463
Tire inflation pressure........... 473
Wheels ....................................... 477
Air conditioning filter ............ 479
Electronic key battery.......... 482
Checking and replacing 
fuses ........................................ 484
Headlight aim ......................... 509
Light bulbs ................................. 512

444
4-3. Do-it-yourself maintenance
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
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 12 volt battery.
Fuel and 12 volt battery fumes are flammable.
●Be extremely cautious when working on the 12 volt battery. It contains poisonous
and corrosive sulfuric acid.
■When 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 5 7 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in the 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.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Air conditioning filter
The air conditioning filter must be cleaned or changed regularly to main-
tain air conditioning efficiency.
■Removal method
Set the air conditioning system to recirculated mode.
The air conditioning filter case cannot be removed with the system in
the outside air mode.
Turn the “ENGINE START STOP” switch to OFF.
Open the glove box and
remove the partition.
Remove the filter cover.
Press the tabs and remove the
filter case.
STEP1
STEP2
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
■Cleaning method
If the filter is dirty, clean by blow-
ing compressed air through the
filter from the downward side.
Hold the air gun 2 in. (5 cm)
from the filter and blow for
approximately 2 minutes at 73
psi (500 kPa, 5.1 kgf/cm
2 or
bar).
If it is not available, have the filter
cleaned by your Lexus dealer.
■Replacement method
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The “UP” marks shown on the
filter and the filter case should
be pointing up.