2014 Lexus IS250C air condition

251
3-1. Using the air conditioning system and defogger
3
Interior features
IS250C/350C_U
Rear window and outside rear view mirror defoggers
■The defogger can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■When the retractable hardtop is open
The rear window defogger is not operable. The indicator will come on if the outside
rear view mirror defoggers are used.
CAUTION
■When the outside rear view mirror defoggers are on
Do not touch the outside surface of the rear view mirror, as it can become very hot
and burn you.
These features are used to defog the rear window, and to remove rain-
drops, dew and frost from the outside rear view mirrors.
With navigation system
Owners of models equipped with a navigation system should refer to the
“Navigation System Owner's Manual”.
Without navigation system On/off
The defoggers will automatically
turn off after 15 to 60 minutes.
The operation time changes
according to the ambient tem-
perature and vehicle speed.

252
3-1. Using the air conditioning system and defogger
IS250C/350C_U
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 from 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

310
3-3. Using the Bluetooth® audio system
IS250C/350C_U
■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 1 9

323
3-4. Using the hands-free phone system (for mobile phones)
3
Interior features
IS250C/350C_U
■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 behind 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 4 6 )
■About Bluetooth®
Bluetooth is a registered trademark of
Bluetooth SIG. Inc.
*: For vehicles sold in U.S. mainland, Canada and Hawaii only

334
3-4. Using the hands-free phone system (for mobile phones)
IS250C/350C_U
■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 2

Maintenance and care4
395
IS250C/350C_U
4-1. Maintenance and careCleaning and protecting the vehicle exterior............. 396
Cleaning and protecting the vehicle interior ............... 401
4-2. Maintenance Maintenance requirements ........................ 404
General maintenance .......... 406
Emission inspection and maintenance (I/M)
programs................................ 409 4-3. Do-it-yourself
maintenance
Do-it-yourself service precautions ............................ 410
Hood ........................................... 413
Positioning a floor jack .......... 414
Engine compartment ............ 416
Tires............................................. 431
Tire inflation pressure............ 441
Wheels ...................................... 445
Air conditioning filter ........... 447
Electronic key battery.......... 449
Checking and replacing fuses ......................................... 451
Headlight aim ......................... 466
Light bulbs................................ 468

412
4-3. Do-it-yourself maintenance
IS250C/350C_U
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 2 5 )
■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.

425
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250C/350C_U
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.