Air Conditioning Lexus GS350 2009 Owner's Guide

Maintenance and care4
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4-1. Maintenance and careCleaning and protecting the vehicle exterior............. 406
Cleaning and protecting the vehicle interior .............. 409 4-2. Maintenance
Maintenance requirements......................... 412
General maintenance ........... 414
Emission inspection and maintenance (I/M)
programs ................................. 417
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ............................ 418
Hood ........................................... 421
Positioning a floor jack ......... 422
Engine compartment ........... 424
Tires............................................ 438
Tire inflation pressure........... 448
Wheels ...................................... 453
Air conditioning filter ........... 455
Electronic key battery.......... 458
Checking and replacing fuses ..................... 460
Headlight aim ......................... 485
Light bulbs ................................ 488
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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 easi ly, 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 3 2 )
■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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Maintenance and care
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Air conditioning filter
The air conditioning filter must be cleaned or changed regularly to main-
tain air conditioning efficiency.
■ Removal method
Set the air conditio ning 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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■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.
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Maintenance and care
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■Checking 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
■To prevent damage to the system
●When using the air conditioning system, make sure that a filter is always installed.
●When cleaning the filter, do not clean the filter with water.
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FuseAmpereCircuit
31FA N 140Electric cooling fans
32HEATER50Air conditioning system
33FA N 240Electric cooling fans
34E/G-AM60H-LP CLN, FR CTRL ALT, A/C
COMP and STB-AM
35RR J/B80
STOP LP R, STOP LP L, RR-B,
RR TAIL, RR FOG, RR-IG1, PSB,
and RR S/SHADE
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Maintenance and care
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FuseAmpereCircuit
24RR J/B80
STOP LP R, STOP LP L, RR-B,
RR TAIL, RR FOG, RR-IG1, PSB,
and RR S/SHADE
25GLW PLG150Starting system
26RH J/B-AM80
AM1, OBD, STOP SW, TI&TE,
PWR OUTLET, FR P/SEAT RH,
STR LOCK, ECU-IG RH, RH-IG,
ACC, CIG, SECURITY,
FR S/HTR RH and AIR SUS
27ABS230ABS
28DEFFOG50Rear window defogger, noise filter
29CDS40CDS
30FA N 140Electric cooling fans
31HEATER50Air conditioning system
32GLW PLG250Starting system
33E/G-AM60H-LP CLN, FR CTRL ALT, A/C
COMP and STB-AM
34LH J/B-AM80
S/ROOF, P/SEAT, TV, FL S-HTR,
ECU-IG L, WIP, H-LP LVL, LH-IG,
FUEL OPN, A/C, PANEL, LH-B and
TRK OPN
35FA N 260Electric cooling fans
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GS350
FuseAmpereCircuit
1FR CTRL-B25H-LP UPR and HORN
2A/F15Exhaust system
3ETCS10Electronic throttle control system
4ALT-S7. 5 Charging system
5H-LP CLN30Headlight cleaner
6A/C COMP7. 5 Air conditioning system
7DEICER25
8FR CTRL-AM30FR TAIL, FR FOG and WASHER
9IG210Ignition system and noise filter
10EFI NO.210Fuel system and exhaust system
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■Left side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30Power seat system
2A/C7. 5Air conditioning system
3TV7. 5Audio system, air conditioning sys-
tem, rear view monitor system
4TRK OPN10Trunk lid opener
5LH-B10Theft deterrent system
6S/ROOF25Moon roof
7PA N E L7. 5
Steering switch illumination, audio
system, glove box light, automatic
transmission selector lever illumina-
tion, console box light, adaptive vari-
able suspension switch illumination,
cigarette lighter illumination, air con-
ditioning system, VSC OFF switch
illumination, driving pattern selector
switch, seat heater or heated and
ventilated seat switches, register ILL
RH, register ILL LH, fuel filler door
and trunk lid opener switch illumina-
tion, D-SW module
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FuseAmpereCircuit
9IGN10
Multi-port fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, stop/tail
lights, steering lock system, electroni-
cally controlled brake system, Lexus
link system ECU, occupant classifica-
tion system ECU
10ACC7. 5
Multiplex communication system,
smart access system with push-but-
ton start, rear view monitor system,
audio system, air conditioning system,
Lexus link system ECU
11CIG15Cigarette lighter
12PWR OUTLET15Po w e r o u t l e t
13AIR SUS20Adaptive variable suspension system
14RR DOOR RH20
Rear right door control system
(power door lock system, door cour-
tesy light, power window)
15FR DOOR RH20
Front right door control system
(power door lock system, power rear
view mirror control system, door
courtesy light, outside rear view mir-
ror heater, power window), multiplex
communication system
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