2012 Lexus IS250C air condition

258
3-1. Using the air conditioning system and defogger
Windshield wiper de-icer
■The windshield wiper de-icer can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
CAUTION
■When the windshield wiper de-icer is on
The surface of the glass at the lower part and sides of the windshield become very
hot. To prevent burning yourself, do not touch these areas.
This feature is used to prevent ice fr om building up on the windshield and
wiper blades.
On/off
The windshield wiper de-icer
will automatically turn off after
approximately 15 minutes.
: If equipped

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3-3. Using the Bluetooth® audio system
■When using a voice command
For numbers, say a combination of single digits from zero to nine.
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 portable player to the system
■Changing the passkey
P. 3 2 5

329
3-4. Using the hands-free phone system (for mobile phones)
3
Interior features
■Conditions under which the system will not operate
●If using a mobile phone that does not support Bluetooth®
●If the mobile phone is switched off
●If you are outside service range
●If the mobile phone is not connected
●If the mobile phone's battery is low
●If the mobile phone is be hind the seat or in the glove box or console box
●If metal is covering or touching the phone
■When using the hands-free system
●The audio system and voice guidance are muted when making a call.
●If both parties speak at the same time, it may be difficult to hear.
●If the incoming call volume is overly loud, an echo may be heard.
●Try to face toward the microphone as much as possible when speaking.
●In the following circumstances, it may be difficult to hear the other party:
• When driving on unpaved roads
• When driving at high speeds
• When a window is open
• When the air conditioning is blowing directly on the microphone
• When the air conditioning is set to high
■When transferring ownership of the vehicle
Be sure to initialize the system to prevent personal data from being improperly
accessed. (P. 3 5 1 )
■About Bluetooth®
Bluetooth is a registered trademark of
Bluetooth SIG. Inc.

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.

431
4-3. Do-it-yourself maintenance
4
Maintenance and care
Radiator and condenserCheck the radiator and condenser and clear any foreign objects.
If either of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by your Lexus dealer.
Brake fluid
■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Make sure to check the fluid type and prepare the necessary items.
■ Adding fluid
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious inju-
ries, such as burns.
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel
■Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.

442
4-3. Do-it-yourself maintenance
■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 your Lexus dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning system will not work properly. After driving for about 20
minutes, the tire pressure warning light come s on after blinking for 1 minute to indi-
cate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even if they
have seldom or never been used or damage is not obvious.
■If the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
■Low profile tires
Generally, low profile tires will wear more rapidly and tire grip performance will be
reduced on snowy and/or icy roads when co mpared 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.