2012 Lexus IS220d air conditioning

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4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, 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 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.
Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.
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. 415)
CAUTION
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in the eyes.

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4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
Air conditioning filter

431
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
The air conditioning filter must be cleaned or changed regularly to
maintain air conditioning efficiency.
Removal method
Set the air conditioning system to recirculated mode.
(P. 254)
The air conditioning filter case cannot be removed with the
system in the outside air mode.
Turn the “ENGINE START STOP” switch OFF.
Open the glove box. Lift and
remove the partition.
Remove the filter cover.
Remove the filter case.
STEP1
STEP2
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to
the “Lexus Service Booklet” or “Lexus Warranty Booklet”.)
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
Cleaning method
If the filter is dirty, clean by
blowing compressed air
through the filter from the
downward side.
Hold the air gun 5 cm (2 in.)
from the filter and blow for
approximately 2 minutes at
500 kPa (5.0 kgf/cm
2 or bar,
72 psi).
If it is not available, have the
filter cleaned by any autho-
rized Lexus dealer or
repairer, or another duly
qualified and equipped pro-
fessional.
Replacement method
Remove the air conditioning
filter 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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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
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.

443
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
7MPX-B10 A
Headlights, front fog lights, front
position lights, license plate lights,
windshield washer, horn, power
door lock system, power windows,
power seats, electric tilt and tele-
scopic steering column, meter,
smart entry & start system, outside
rear view mirrors, air conditioning
system, multiplex communication
system
8DOME10 AInterior lights, meter, outer foot
lights
9CDS10 AElectric cooling fans
10E/G-B60 AFR CTRL-B, ETCS, A/F, STR
LOCK, EDU, ECD
11DIESEL GLW80 AEngine glow system
12ABS150 AVDIM
13RH J/B-B30 AFR DOOR RH, RR DOOR RH,
AM2
14MAIN30 AH-LP L LWR, H-LP R LWR
15STARTER30 ASmart entry & start system
16LH J/B-B30 AFR DOOR LH, RR DOOR LH,
SECURITY
17P/I-B60 AEFI, F/PMP, INJ
18EPS80 APower steering
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
19ALT150 A
LH J/B-AM, E/G-AM, GLW
PLG2, HEATER, FAN1, FAN2,
DEFOG, ABS2, RH J/B-AM,
GLW PLG1,
LH JB-B, RH J/B-B
20GLW PLG150 APTC heater
21RH J/B-AM80 A
OBD, STOP SW, TI&TE, FR P/
SEAT RH, RAD NO.3, ECU-IG
RH,
RH-IG, FR S/HTR RH, ACC, CIG,
PWR OUTLET, DOOR DL
22ABS230 AVDIM
23DEFOG50 ARear window defogger
24FA N 240 AElectric cooling fans
25FA N 140 AAir conditioning system
26HEATER50 AAir conditioning system
27GLW PLG250 APTC heater
28E/G-AM60 AH-LP CLN, FR CTRL-AM,
DEICER, A/C COMP
29LH J/B-AM80 A
S/ROOF, FR P/SEAT LH, TV
NO.1,
A/C, FUEL OPEN, PSB, RR FOG,
FR WIP, H-LP LVL, LH-IG,
ECU-IG LH, PANEL, TAIL, TV
NO.2, MIR HTR, FR S/HTR LH
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
5A/F15 A
Multiport fuel injection system/
sequential multiport fuel injection
system
6ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection
system
7TEL10 A
8STR LOCK25 ASteering lock system
9H-LP CLN30 AHeadlight cleaner
10A/C COMP7.5 AAir conditioning system
11DEICER25 AWindshield wiper de-icer
12FR CTRL-AM30 AFR TAIL, FR FOG, WASHER
13IG210 AIgnition system
14EFI NO.210 A
Multiport fuel injection system/
sequential multiport fuel injection
system
15H-LP R LWR15 AHeadlight low beam (right)
16H-LP L LWR15 AHeadlight low beam (left)
17F/PMP25 AFuel system
18EFI25 A
Multiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.2
19INJ20 A
Multiport fuel injection system/
sequential multiport fuel injection
system
20H-LP UPR20 AHeadlight high beams
21HORN10 AHorns
FuseAmpereCircuit