air conditioning Lexus IS250C 2012 Instrument cluster / LEXUS 2012 IS250C,IS350C (OM53A62U) Owner's Manual

339
3-4. Using the hands-free phone system (for mobile phones)
3
Interior features
■Automatic volume adjustment
When vehicle speed reaches 50 mph (80 km/h) or more, the volume automati-
cally increases. The volume returns to the previous volume setting when vehicle
speed drops to 43 mph (70 km/h) or less.
■When using a voice command
For numbers, say a combination of single digits from zero to nine, # (pound),
 (star), and + (plus).
Say the command correctly and clearly.
■Situations in which the system may not recognize your voice
●When driving on rough roads
●When driving at high speeds
●When air is blowing out of the vents onto the microphone
●When the air conditioning fan emits a loud noise
■Operations that cannot be performed while driving
●Operating the system with , and
●Registering a mobile phone to the system
■Changing the passkey
P. 3 4 7

Maintenance and care4
401
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 402
Cleaning and protecting the vehicle interior .............. 407
4-2. Maintenance Maintenance requirements ......................... 410
General maintenance ........... 412
Emission inspection and maintenance (I/M)
programs
.................................. 415 4-3. Do-it-yourself
maintenance
Do-it-yourself service precautions ............................ 416
Hood ........................................... 419
Positioning a floor jack ......... 420
Engine compartment ........... 422
Tires............................................ 437
Tire inflation pressure........... 447
Wheels ....................................... 451
Air conditioning filter ........... 453
Electronic key battery.......... 456
Checking and replacing fuses ........................................ 458
Headlight aim ......................... 473
Light bulbs ................................. 475

418
4-3. Do-it-yourself maintenance
CAUTION
■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 1 )
■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.

453
4-3. Do-it-yourself maintenance
4
Maintenance and care
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.
( P. 2 4 8 )
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

454
4-3. Do-it-yourself maintenance
■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, please refer to the “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.
■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
72 psi (500 kPa, 5.0 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.

455
4-3. Do-it-yourself maintenance
4
Maintenance and care
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.

462
4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings■ Engine compartment (type A fuse box)
FuseAmpereCircuit
1TURN-HAZ15 AEmergency flashers, turn signals
2IG2 MAIN20 AIG2, IGN, GAUGE
3RAD NO.230 AAudio
4D/C C UT20 ADOME, MPX-B
5RAD NO.130 AAudio
6MPX-B10 A
Headlights, front fog lights, parking
lights, license plate lights, windshield
washer, power windows, power seats,
electric tilt and telescopic steering
column, meter, smart access system
with push-button start, outside rear
view mirrors, air conditioning system,
retractable hardtop, clock
7DOME10 AInterior lights, mete r, outer foot lights
8CDS10 APo w e r s o u r c e

463
4-3. Do-it-yourself maintenance
4
Maintenance and care
9E/G-B60 AFR CTRL-B, ETCS, ALT-S, A/F, TEL,
STR LOCK
10ABS150 AVDIM
11RH J/B-B30 AFR DOOR RH, AM2
12MAIN30 AH-LP R LWR, H-LP L LWR
13STARTER30 ASmart access system with push-button
start
14LH J/B-B30 AFR DOOR LH, SECURITY
15P/I-B60 AINJ, F/PMP, EFI
16EPS80 APower steering
17ALT150 A
LH J/B-AM, E/G-AM, GLW PLG2,
HEATER, FAN1, FAN2, ABS2, RH
J/B-AM, GLW PLG1, RR R/B-AM
18RR R/B-AM80 A
DEFOG, PSB, ROOF RH, ROOF
LH, LGG RH, LGG LH, LGG LCK
RH, LGG LCK LH, P-TRAY MAIN,
P-T R AY S I D E
19GLW PLG150 APTC heater
20RH 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
21ABS230 AVDIM
22FA N 240 AElectric cooling fans
23FA N 140 AElectric cooling fans
24HEATER50 AAir conditioning system
25GLW PLG250 APTC heater
FuseAmpereCircuit

465
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Engine compartment (type B fuse box)
FuseAmpereCircuit
1SPARE30 ASpare fuse
2SPARE25 ASpare fuse
3SPARE10 ASpare fuse
4FR CTRL-B25 AHeadlight high beam, HORN
5A/F15 AExhaust system
6ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
7ALT-S7. 5 ACharging system
8TEL10 ALexus Enform
9STR LOCK25 ASteering lock system
10H-LP CLN30 AHeadlight cleaner
11A/C COMP7. 5 AAir conditioning system
12DEICER25 AWindshield wiper de-icer
13FR CTRL-AM30 AWASHER, FR TAIL, FR FOG

467
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30 APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15 AOutside rear view mirror defoggers
4TV NO.110 ADisplay
5FUEL OPN10 AFuel filler door opener
6TV NO.27. 5 A
7TA I L10 ATail lights, license plate lights, parking
lights, side marker lights
8PA N E L7. 5 A
Air conditioning system, display,
clock, cigarette lighter, power steer-
ing, headlight cleaner, retractable
hardtop, ECT, ETCS, seat heaters and
ventilators, trunk opener, outside rear
view mirrors, shift lever light, traction
control, audio, instrument panel light
control
9RR FOG7. 5 A