2012 Lexus IS250 change key battery

46
1-2. Opening, closing and locking the doors and trunk
IS350/250_U
■Pa n ic m o d e
■Electronic key battery depletion
→P. 3 9
■When the electronic key battery is fully depleted
→P. 4 3 3
■Security feature
→P. 4 1
■Conditions affecting operation
→P. 3 7
■Customization that can be configured at Lexus dealer
Settings (e.g. trunk unlocking function) can be changed.
(Customizable features →P. 5 5 3 ) When is pushed for longer than about
one second, an alarm will sound for about 60
seconds and the vehicle lights will flash to
deter any person from trying to break into or
damage your vehicle.
To stop the alarm, push any button on the
wireless remote control.

175
2-3. Operating the lights and windshield wipers
2
When driving
IS350/250_U
■Automatic light off system
This system is active when the “ENGINE START STOP” switch is in IGNITION
ON mode and the headlight lever is in any position other than
or .
●When the headlights come on: The headlights and tail lights turn off 30 seconds
after a door is opened and closed if the “ENGINE START STOP” switch has
been switched to ACCESSORY mode or turned OFF. (The lights turn off
immediately if on the key is pressed after all doors are locked.)
●When only the tail lights come on: The tail lights turn off automatically if the
“ENGINE START STOP” switch is switched to ACCESSORY mode or turned
OFF and driver’s door is opened.
To turn the lights on again, switch to IGNITION ON mode, or turn the light switch
off once and then back to or
.
■Automatic headlight leveling system (vehicles with discharge headlights)
The level of the headlights is automatically adjusted according to the number of
passengers and the loading condition of the vehicle to ensure that the headlights do
not interfere with other road users.
■Customization that can be configured at Lexus dealer
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features →P. 553)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running.

579
Alphabetical index
IS350/250_U
Back-up lightsWattage ................................................. 536
Battery Checking ...............................................408
If the vehicle has a discharged battery................................................... 510
Preparing and checking before winter .................................... 206
Bluetooth
® audio* ............................... 276
Bluetooth® phone*..............................294
Bottle holders ........................................ 334
Brake Fluid .......................................................... 406
Parking brake ........................................155
Brake assist ............................................... 196
Care Exterior ................................................... 378
Interior..................................................... 382
Seat belts ............................................... 383
Cargo capacity ..................................... 202
Cargo hooks ...........................................357
CD changer* ..........................................237
CD player* ..............................................237
Chains....................................................... 206 Child restraint system
Booster seats, definition .................... 114
Booster seats, installation ................. 121
Convertible seats, definition ............ 114
Convertible seats, installation ......... 121
Front passenger occupant
classification system ....................... 109
Infant seats, definition .......................... 114
Infant seats, installation ....................... 121
Installing CRS with LATCH
anchors ................................................... 119
Installing CRS with seat belts .......... 121
Installing CRS with top straps........124
Child safety
Airbag precautions ............................ 104
Battery precautions .................410, 512
Child restraint system ......................... 114
Child-protectors ................................... 49
How your child should wear the seat belt ..........................................68
Installing child restraints..................... 118
Moon roof precautions......................86
Power window lock switch ............. 80
Power window precautions ............ 82
Removed electronic key battery precautions .......................434
Seat belt comfort guide .....................66
Seat belt extender precautions...... 70
Seat belt precautions ..........................69
Seat heater precautions..... 347, 350
Trunk precautions................................. 54
B
C
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.