battery Lexus IS250C 2010 Owner's Guide

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3-1. Using the air conditioning system and defogger
3
Interior features
10_IS250C/350C_U
■When the indicator light on flashes
Press and turn off the air conditioning system before turning it on once
more. There may be a problem in the air conditioning system if the indicator light
continues to flash. Turn the air conditioning system off and have it inspected by your
Lexus dealer.
■Automatic mode for air intake control (IS350C only)
In automatic mode, the system detects exhaust gas and other pollutants and auto-
matically switches between outside air and recirculated air modes. When the
retractable hardtop is opened, recirculated air mode is automatically selected.
■Micro dust and pollen filter
●In order to prevent the window from fogging up when the outside air is cold, the
following may occur.
• Outside air mode does not switch to .
• The air conditioning system operates automatically.
• The operation cancels after 1 minute.
●In rainy weather, the windows may fog up. Press .
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The dif-
ference between the temperature of the outside air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the automatic air conditioning system on longer than necessary when
the engine is off.

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3-2. Using the audio system
3
Interior features
10_IS250C/350C_U
■Using cellular phones
Interference may be heard through the audio system’s speakers if a cellular phone is
being used inside or close to the vehicle while the audio system is operating.
CAUTION
■For vehicles sold in U.S.A. and Canada
●Pa r t 1 5 o f t h e FCC Ru l e s
FCC Warning:
Any unauthorized changes or modifications to this equipment will void the user’s
authority to operate this device.
●Laser products
• Do not take this unit apart or attempt to make any changes yourself. This is an intricate unit that uses a laser pickup to retrieve information from the
surface of compact discs. The laser is carefully shielded so that its rays remain
inside the cabinet. Therefore, never try to disassemble the player or alter any
of its parts since you may be exposed to laser rays and dangerous voltages.
• This product utilizes a laser. Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
NOTICE
■To prevent battery discharge
Do not leave the audio system on longer than necessary with the engine off.
■To avoid damaging the audio system
Take care not to spill drinks or other fluids over the audio system.

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3-2. Using the audio system
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Interior features
10_IS250C/350C_U
■When the battery is disconnected
Stations presets are erased.
■Radio antenna type
●Detachable antenna
To remove a detachable antenna, carefully turn it counterclockwise.
●Wire antenna
The radio antenna is mounted inside the windshield.
■Reception sensitivity
●Maintaining perfect radio reception at all times is difficult due to the continually
changing position of the antenna, differences in signal strength and surrounding
objects, such as trains, transmitters, etc.
●The radio antenna is mounted inside the windshield. To maintain clear radio
reception, do not attach metallic window tinting or other metallic objects to the
antenna wire mounted inside the windshield.
■XM® Satellite Radio
An XM
® Satellite Radio is a tuner designed exclusively to receive broadcasts pro-
vided under a separate subscription. Availability is limited to the 48 contiguous
states and 10 Canadian provinces.
●XM® subscriptions
For detailed information about XM® Satellite Radio or to subscribe:
U.S.A. 
Visit on the web at www.xmradio.com
or call 1-877-515-3987.
Canada 
Visit on the web at www.xmradio.ca
or call 1-877-515-3987.
●Radio ID
You will need the radio ID when activating XM
® service or reporting a prob-
lem. Select “CH000” using , and the receiver's 8-character ID number
will appear.
●Satellite tuner
The tuner supports only Audio Services (Music and Talk) and the accompany-
ing Text Information of XM
® Satellite Radio.

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3
Interior features
10_IS250C/350C_U
3-3. Using the Bluetooth® audio system
Bluetooth® audio system∗
■Conditions under which the system will not operate
●If using a portable player that does not support Bluetooth®
●If the portable player is switched off
●If the portable player is not connected
●If the portable player’s battery is low
●If the portable player is behind the seat or in the glove box or console box
●If metal is covering or touching the portable player
The Bluetooth® audio system enables you to enjoy music played on a por-
table digital audio player (portable player) from the vehicle speakers via
wireless communication.
This audio system supports Bluetooth
®, a wireless data system capable of
playing portable audio music without cables. If your portable player does
not support Bluetooth
®, the Bluetooth® audio system will not function.
Vehicles with a navigation system
Owners of models equipped with a navigation system should refer to
the “Navigation System Owner's Manual”.
Vehicles without a navigation system
Ti t l ePa g e
Using the Bluetooth® audio systemP. 2 9 2
Operating a Bluetooth® enabled portable playerP. 2 9 7
Setting up a Bluetooth® enabled portable playerP. 3 0 0
Bluetooth® audio system setupP. 3 0 6
∗: If equipped

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3-4. Using the hands-free phone system (for mobile phones)
10_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 3 0 )
■About Bluetooth®
Bluetooth is a registered trademark of
Bluetooth SIG. Inc.

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3-5. Using the interior lights
3
Interior features
10_IS250C/350C_U
Interior lightDoor position on/off
On/off
Personal lights
On/off
■To prevent the battery from being discharged
If the interior light remain on when the d oor is not fully closed and the interior light
switch (door position on/off) is on, the lights will go off automatically after 20 min-
utes.
■Customization that can be configured at Lexus dealer
Setting (e.g. The time elapsed before lights turn off) can be changed.
(Customizable features
→P. 557)
Interior light and personal lights

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3-7. Other interior features
10_IS250C/350C_U
Power outlet
■The power outlet can be used when
The “ENGINE START STOP” switch is in ACCESSORY or IGNITION ON mode.
NOTICE
■To avoid damaging the power outlet
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter the power outlet may cause a short circuit.
■To prevent the fuse from being blown
Do not use an accessory that uses more than 12 V 10 A.
■To prevent the battery from being discharged
Do not use the power outlet longer than necessary when the engine is off.
The power outlet can be used for 12 V accessories that run on less than 10
A.

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3-7. Other interior features
3
Interior features
10_IS250C/350C_U
CAUTION
■Burns
●Use caution when seating the following persons in a seat with the seat heater on
to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the disabled
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs,cold remedies, etc.)
●Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature of the
seat and may lead to overheating.
NOTICE
■To prevent seat heaters and ventilators damage
Do not put unevenly weighted objects on the seat and do not stick sharp objects
(needles, nails, etc.) into the seat.
■To prevent battery discharge
Turn the switches off when the engine is off.

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3-7. Other interior features
10_IS250C/350C_U
Erasing the entire HomeLink memory (all three programs)Press and hold the 2 outside but-
tons for 10 seconds until the indi-
cator light flashes.
If you sell your vehicle, be sure to
erase the programs stored in the
HomeLink
 memory.
■Before programming
●Install a new battery in the remote control transmitter.
●The battery side of the remote control transmitter must be pointed away from
the HomeLink button.
■Certification for the garage door opener
This device complies with Part 15 of the FCC Rules and with RSS-210 of the IC
Rules.
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
WARNING: This transmitter has been tested and complies with FCC and IC rules.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the device.

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3-7. Other interior features
10_IS250C/350C_UPress “AUTO” again.
If the direction is displayed several seconds after adjustment, the cali-
bration is complete.
■
Circling calibration
If “CAL” appears on the display,
drive the vehicle at 5 mph (8 km/h)
or less in a circle until a direction is
displayed.
If there is not enough space to
drive in a circle, drive around the
block until the direction is dis-
played.
STEP4
■Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
●The vehicle is stopped immediately after turning.
●The vehicle is on an inclined surface.
●The vehicle is in a place where the earth's magnetic field is subject to interfer-
ence by artificial magnetic fields (underground car park/parking lot, under a
steel tower, between buildings, roof car park/parking lot, near an intersection,
near a large vehicle, etc.).
●The vehicle has become magnetized.
(There is a magnet or metal object near the inside rear view mirror.)
●The battery has been disconnected.
●A door is open.