air condition Lexus IS220d 2012 Service Manual

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4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
Replace the tires when the treadwear indicators show.
Checking tires
New tread
Treadwear indicator
Wo r n t r e a d
The location of treadwear
indicators is shown by the
“TWI” or “ ” marks, etc.,
molded on the sidewall of
each tire.
Check spare tire condition
and inflation pressure if not
rotated.
Tire rotation
Models with 16-inch tires (with a compact spare tire or an
emergency tire puncture repair kit)
Rotate the tires in the order
shown.
To equalize tire wear and
help extend tire life, Lexus
recommends that you rotate
your tires approximately
every 10000 km (6000
miles).
Models with 16-inch tires (with a full-size spare tire)
Rotate the tires in the order
shown.
To equalize tire wear and
help extend tire life, Lexus
recommends that you rotate
your tires approximately
10000 k (6000
Front

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4-3. Do-it-yourself maintenance
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When to replace your vehicle’s tires
Tires should be replaced if:
You have tire damage such as cuts, splits, cracks deep enough to expose
the fabric or bulges indicating internal damage
A tire goes flat repeatedly or cannot be properly repaired due to the size
or location of a cut or other damage
If you are not sure, consult with any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Tire life
Any tire over 6 years old must be checked by a qualified technician even if
it has seldom or never been used or damage is not obvious.
If the tread on snow tires wears down below 4 mm (0.16 in.)
The effectiveness of snow tires is lost.
Low profile tires (models not equipped with 16-inch tires)
Generally, low profile tires will wear more rapidly and tire grip performance
will be reduced on snowy and/or icy roads when compared to standard tires.
Be sure to use snow tires or tire chains
* on snowy and/or icy roads and
drive carefully at a speed appropriate for road and weather conditions.
*: Tire chains cannot be mounted on 18-inch tires.
CAUTION
When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train, as well as dan-
gerous handling characteristics, which may lead to an accident resulting in
death or serious injury.
Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
Do not use tire sizes other than those recommended by Lexus.
Do not mix differently constructed tires (radial, bias-belted or bias-ply
tires).
Do not mix summer, all season and snow tires.
Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.

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4-3. Do-it-yourself maintenance
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Maintenance and care
IS250/220d/200d_EE
NOTICE
Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot holes.
These conditions may cause losses in tire air pressure, reducing the cushion-
ing ability of the tires. In addition driving on rough roads may cause damage
to the tires themselves, as well as the vehicle’s wheels and body.
Low profile tires and wheels (vehicles with 17- and 18- inch tires)
Wheels with profile tires may cause greater damage than usual to the tire
wheel when receiving impact from the road surface. Therefore pay attention
to the following:
Be sure to use proper tire inflation pressure. If tires are under-inflated,
they may be damaged more severely.
Avoid pot holes, uneven pavement, curbs and other road hazards.
Failure to do so may lead to severe tire and wheel damage.
If tire pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

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4-3. Do-it-yourself maintenance
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Maintenance and care
IS250/220d/200d_EE
CAUTION
Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may
occur and result in an accident causing death or serious injury.
Excessive wear
Uneven wear
Poor handling
Possibility of blowouts resulting from overheated tires
Poor sealing of the tire bead
Wheel deformation and/or tire separation
A greater possibility of tire damage from road hazards
NOTICE
When inspecting and adjusting tire pressure
Be sure to reinstall the tire valve caps.
Without the valve caps, dirt or moisture could get into the valve and cause
air leakage, which could result in an accident. If the caps have been lost,
replace them as soon as possible.

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4-3. Do-it-yourself maintenance
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Air conditioning filter

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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
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Maintenance and care
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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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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