2015 Lexus IS250 battery

1634-2. Driving procedures
4
Driving
IS350/250_U (OM53C50U)
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If “ACCESSORY” or “IGNITION ON” is displayed on the meters while the engine is
not running, the engine switch is not off. Exit the vehicle after turning the engine
switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by your Lexus dealer immediately.
■Symptoms indicating a malfunction with the engine switch
If the engine switch seems to be operating somewhat differently than usual, such as the
switch sticking slightly, there may be a malf unction. Contact your Lexus dealer immedi-
ately.

1754-3. Operating the lights and wipers
4
Driving
IS350/250_U (OM53C50U)
■Light reminder buzzer
A buzzer sounds when the engine switch is turned off or turned to ACCESSORY mode
and the driver’s door is opened while the lights are turned on.
■Operation guide display (vehicles with rain-sensing windshield wipers only)
When the headlight switch is operated to and from the “AUTO” position, the current sta-
tus is displayed on the meters for a few seconds to show that AUTO mode is activated/
deactivated. ( →P. 8 9 )
■Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: →P. 5 3 7 )
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than ne cessary when the engine is not running.

2344-5. Using the driving support systems
IS350/250_U (OM53C50U)
‰ The estimated course lines move even though the steering wheel is straight
There is a malfunction in the signals being
output by the steering sensor.Have the vehicle inspected by your Lexus
dealer.
‰ Guide lines are not displayed
The trunk is open.
Close the trunk.
If this does not resolve the symptom, have
the vehicle inspected by your Lexus
dealer.
‰The estimated course lines are not displayed
• The steering wheel has been moved
while the battery was being reinstalled.
• Battery power is low.
• The steering sensor has been rein-
stalled.
• There is a malfunction in the signals being output by the steering sensor.Stop the vehicle, and turn the steering
wheel as far as it will go to the left and
right.
If this does not resolve the symptom, have
the vehicle inspected by your Lexus
dealer.
Likely causeSolution

2434-5. Using the driving support systems
4
Driving
IS350/250_U (OM53C50U)
■VGRS is disabled when
VGRS may stop operating in the following situations.
In this event, the steering wheel may move from its straight forward position, but it will
return when the system restarts.
●When the steering wheel is operated for an extended period of time while the vehicle is
stopped or is moving very slowly
●When the steering wheel has been held fully to the left or right
The center position of the steering wheel may change when VGRS is disabled. However,
the position will return to normal after VGRS is reactivated.
■When the battery is disconnected
The steering wheel may move from its straight forward position, but this will be corrected
automatically when driving.
■Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC, hill-start assist
control and VGRS systems
●A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the engine is started or just after the vehicle begins to
move. This sound does not indicate that a malfunction has occurred in any of these sys-
tems.
●Any of the following conditions may occur when the above systems are operating.
None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■EPS and VGRS operation sound
When the steering wheel is operated, a motor sound may be heard. This does not indi-
cate a malfunction.
■Reactivation of the TRAC/VSC systems
Even after the TRAC/VSC systems have been turned off, turning the engine off and then
on again will automatically reactivate the TRAC/VSC systems.
■Reactivation of the TRAC system linked to vehicle speed
When only the TRAC system is turned off, the TRAC system will turn on when vehicle
speed increases. However, when both TRAC/VSC systems are turned off, the systems
will not turn on even when vehicle speed increases.

260
IS350/250_U (OM53C50U)4-6. Driving tips
●Use fluids that are appropriate to the prevailing outside temperatures.
•Engine oil
• Engine coolant
•Washer fluid
●Have a service technician inspect the condition of the battery.
●Have the vehicle fitted with four snow tires or purchase a set of tire chains for
the rear tires.
*
Ensure that all tires are the specified size and brand, and that chains match the size
of the tires.
*: Tire chains cannot be mounted on the 18-inch tires.
Perform the following according to the driving conditions:
●Do not try to forcibly open a window or move a wiper that is frozen. Pour
warm water over the frozen area to melt the ice. Wipe away the water imme-
diately to prevent it from freezing.
●To ensure proper operation of the climate control system fan, remove any
snow that has accumulated on the air inlet vents in front of the windshield.
●Check for and remove any excess ice or snow that may have accumulated on
the exterior lights, vehicle’s roof, chassis, around the tires or on the brakes.
●Remove any snow or mud from the bottom of your shoes before getting in the
vehicle.
Accelerate the vehicle slowly, keep a safe distance between you and the vehicle
ahead, and drive at a reduced speed suitable to road conditions.
Winter driving tips
Carry out the necessary preparations and inspections before driving the vehi-
cle in winter. Always drive the vehicle in a manner appropriate to the prevail-
ing weather conditions.
Preparation for winter
Before driving the vehicle
When driving the vehicle

2705-1. Basic Operations
IS350/250_U (OM53C50U)
■When using the screen
●Under extremely cold conditions, the Lexus Display Audio controller may react slowly.
●If the screen is cold, the display may be da rk, or the system may seem to be operating
slightly slower than normal.
●The screen may seem dark and hard to see when viewed through sunglasses. Change
your angle of viewing, adjust the display on the “Display” screen (→P. 2 8 0 ) o r r e m o v e
your sunglasses.
■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 vehi cle while the audio system is operating.
CAUTION
■Using the Lexus Display Audio controller
Be careful when touching the Lexus Display Audio controller in extreme temperatures
as it may become very hot or cold due to the temperature inside the vehicle.
■Laser product
●USE OF CONTROL OR ADJUSTMENT OR PERFORMANCE OF PROCE-
DURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARD-
OUS RADIATION EXPOSURE.
●THE USE OF OPTICAL INSTRUMENTS WITH THIS PRODUCT WILL
INCREASE EYE HAZARD.
NOTICE
■To prevent Lexus Display Audio controller malfunction
●Do not allow the Lexus Display Audio controller to come into contact with food, liq-
uid, stickers or lit cigarettes as doing so may cause it to change color, emit a strange
odor or stop functioning.
●Do not subject the Lexus Display Audio controller to excessive pressure or strong
impact as the controller may bend or break off.
■To prevent battery discharge
Do not leave the audio system on longer than necessary when the engine is off.
■To avoid damaging the audio system
Take care not to spill drinks or other fluids on the audio system.

3025-6. Using an external device
IS350/250_U (OM53C50U)
●“Made for iPod” and “Made for iPhone” mean that an electronic accessory has been
designed to connect specifically to an iPod , or iPhone, respectively, and has been certi-
fied by the developer to meet Apple performance standards.
●Apple is not responsible for the operation of this device or its compliance with safety
and regulatory standards. Please note that the use of this accessory with iPod or iPhone
may affect wireless performance.
● iPhone, iPod, iPod classic, iPod nano and iPod touch are trademarks of Apple Inc., reg-
istered in the U.S. and other countries.
■iPod cover art
●Depending on the iPod and songs in the iPod, iPod cover art may be displayed.
●This function can be changed to on/off. ( →P. 2 8 5 )
●It may take time to display iPod cover art, and the iPod may not be operated while the
cover art display is in process.
■iPod functions
●When an iPod is connected and the audio source is changed to iPod mode, the iPod will
resume play from the same point in which it was last used.
●Depending on the iPod that is connected to the system, certain functions may not be
available. If a function is unavailable due to a malfunction (as opposed to a system spec-
ification), disconnecting the device and reconnecting it may resolve the problem.
●Depending on the iPod, while connected to the system, the iPod cannot be operated
with its own controls. It is necessary to use the controls of the vehicle's audio system
instead.
●When the battery level of an iPod is very low, the iPod may not operate. If so, charge the
iPod before use.
●Compatible models ( →P. 3 0 3 )
■iPod problems
To resolve most problems encountered when using your iPod, disconnect your iPod from
the vehicle iPod connection and reset it. For in structions on how to reset your iPod, refer
to your iPod Owner's Manual.
■Error messages
MessageCause/Correction procedures
“Connection error.”This indicates a problem in the iPod or its connection.
“There are no songs available
for playback.”This indicates that there is no music data in the iPod.
“No items available.”This indicates that songs are not found in a selected
playlist.
“Please check the iPod firm-
ware version.”This indicates that the software version is not com-
patible.
Please check the compatible models. ( →P. 303)
“iPod authorization failed.”This indicates that the display audio system failed to
authorize the iPod.
Please check your iPod.

317
5
Lexus Display Audio system
IS350/250_U (OM53C50U)5-8. Bluetooth
® Audio
When a Bluetooth® device cannot be connected, check the connection status
on the “Bluetooth
* Audio” screen. If the device is not connected, either register
or reconnect the device. ( →P. 312, 313)
*: Bluetooth is a registered trademark of Bluetooth SIG, Inc.
You can check indicators, such as, signal strength and battery charge on the
screen.
Connection status
Battery charge
Depending on the type of portable
audio player used, some titles may not
be displayed.
Listening to Bluetooth® Audio
The Bluetooth® audio system enables the user to enjoy music played on a por-
table player from the vehicle speakers via wireless communication.
Status display
1
2
IndicatorsConditions
Connection statusGood Not connected
Battery chargeFull Empty