2013 Lexus IS250 key battery

5
When trouble arises
481
5-2. Steps to take in an emergency
Once3 times
(Flashing)
Indicates that the
driver’s door has
been opened or
closed with the
shift lever in P, the
“ENGINE START
STOP” switch in
any mode other
than OFF and the
electronic key
outside of the
detection area.
Tu r n t h e
“ENGINE START
STOP” switch
OFF or confirm
the location of the
electronic key.
OnceCon-
tinuous
(Displayed alternately)(Flashing)
Indicates that the
driver’s door has
been opened or
closed (with the
shift lever out of in
P, the “ENGINE
START STOP”
switch in any
mode other than
OFF and the elec-
tronic key outside
of the detection
area).
• Shift the shift lever to P.
•Confirm the
location of the
electronic key.
Once
(Flashing)
Indicates that the
key battery is low.Replace the bat-
tery. ( P. 4 2 6 )
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

482
5-2. Steps to take in an emergency
*: If the engine does not start when the electronic key is inside the vehicle, theelectronic key battery may be depleted or there may be difficulties receiving the
signal from the key. ( P. 3 7 )
Once
Indicates that a
door has been
opened or closed
and the “ENGINE
START STOP”
switch has been
switched twice to
ACCESSORY
mode from OFF.
Press the
“ENGINE START
STOP” switch
while applying the
brakes.

(Flashing)
Indicates that the
steering lock has
not released
within 3 seconds
of pressing the
“ENGINE START
STOP” switch.Press the
“ENGINE START
STOP” switch
again while turn-
ing the steering
wheel with the
brake pedal
depressed.
OnceIndicates that the
electronic key
does not operate
properly.
P. 4 9 8

Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

496
5-2. Steps to take in an emergency
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked functions
Use the mechanical key built in to the electronic keys to operate the
doors. (P. 2 9 )
Doors Remove the cover on the driver’s
door handle.
Locks all the doors
Closes the windows and moon
roof (turn and hold)
Unlocks the door
Turning the key rearward unlocks
the driver's door. Turning the key
once again unlocks the other
doors.
Opens the windows and moon
roof (turn and hold)
If communication between the electron ic key and vehicle is interrupted
(  P. 37) or the electronic key canno t be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In su ch cases, the doors and trunk can be
opened or the engine can be started by following the procedure below.
STEP1
STEP2

5
When trouble arises
499
5-2. Steps to take in an emergency
■Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as you nor-
mally do when stopping the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery depletes.
(  P. 4 2 6 )
■Changing “ENGINE START STOP” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the
“ENGINE START STOP” switch.
The engine does not start and modes will be changed each time the switch is
pressed. ( P. 141)

5
When trouble arises
501
5-2. Steps to take in an emergency
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical
appliances. If the vehicle is left for a long time, the battery may discharge, and the
engine may be unable to start. (The batt ery recharges automatically during driving.)
■When the battery is removed or discharged
Make sure that the key is not inside the vehicle when recharging or replacing the
battery. The key may be locked in the vehicle if the alarm is activated. ( P. 9 4 )
Maintain the engine speed of th e second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine ha s started, remove the jumper
cables in the exact reverse ord er in which they were con-
nected.
Once the engine starts, have the ve hicle checked at your Lexus dealer
as soon as possible.STEP5
STEP6

570
Alphabetical index
Child safetyAirbag precautions............................ 105
Battery precautions ............. 404, 502
Child restraint system......................... 115
Child-protectors ................................... 49
How your child should wear the seat belt .......................................... 69
Installing child restraints .................... 119
Moon roof precautions ..................... 87
Power window lock switch................81
Power window precautions ............ 83
Removed electronic key battery precautions ........................427
Seat belt comfort guide ..................... 67
Seat belt extender precautions ....... 71
Seat belt precautions .......................... 70
Seat heater precautions ..... 340, 342
Trunk precautions ................................ 55 Cigarette lighter ................................... 337
Cleaning
Exterior .................................................... 372
Interior......................................................376
Seat belts ................................................ 377
Clock ......................................................... 332
Coat hooks.............................................. 347
Compass .................................................. 359
Condenser ..............................................400
Console box ........................................... 325
Cooling system Engine overheating .......................... 504
Cornering assist sensors .................... 185
Cruise control........................................... 181
Cup holder .............................................. 327
Curtain shield airbags ........................... 99
Customizable features ....................... 542

571
Alphabetical index
Daytime running light system............ 169
Defogger*Rear window.......................................... 218
Side mirror .............................................. 218
Dimension .................................................510
Dinghy towing ....................................... 206
Display Satellite switch mode....................... 333
Trip information .................................... 163
Warning message .............................473
Do-it-yourself maintenance............. 385
Door courtesy lights Door courtesy lights .......................... 319
Wattage ................................................. 525
Door pockets ......................................... 329
Doors Door lock ............................... 33, 45, 48
Door windows ......................................... 81
Side mirrors............................................. 78
Driver's seat belt reminder light .... 465
Driving Correct posture .....................................97
Procedures .............................................130
Driving position memory ..................... 59 Electric power steering .........................191
Electronic key
If the electronic key does not operate properly ........................... 496
Emergency, in case of If a warning message is displayed............................................. 473
If the electronic key does not operate properly ........................... 496
If the engine will not start................ 492
If the shift lever cannot be shifted from P ...................................494
If the vehicle has a discharged battery ................................................. 500
If the warning buzzer sounds ......463
If the warning light turns on...........463
If you have a flat tire ........................ 483
If you lose your keys ........................ 495
If you think something is wrong .................................................... 461
If your vehicle becomes stuck .... 507
If your vehicle has to be stopped in an emergency ............................ 508
If your vehicle needs to be towed................................................... 455
If your vehicle overheats ............... 504D
*: For vehicles with a navigation system, refe r to the “Navigation System Owner’s Manual”.
E

576
Alphabetical index
Noise from under vehicle...................... 19
Odometer................................................. 153
OilEngine oil ...............................................395
Opener Fuel filler door.........................................88
Hood....................................................... 388
Trunk ........................................................... 53
Outer foot lights Outer foot lights ...................................319
Wattage.................................................. 525
Outside rear view mirrors Adjusting and folding ......................... 78
Mirror position memory ................... 59
Outside temperature display............ 163
Overhead console ............................... 326
Overhead courtesy lights Overhead courtesy lights ...............319
Wattage.................................................. 525
Overheating, Engine.......................... 504 Parking assist sensors*........................ 185
Parking brake............................................ 151
Parking lights
Replacing light bulbs ........................444
Switch ........................................................ 167
Wattage ................................................. 525
Personal lights Switch ........................................................ 321
Power outlet ........................................... 338
Power windows ..........................................81
Radiator ....................................................400
Radio* ....................................................... 223
RDS* .......................................................... 225
Rear sunshade ....................................... 344
Rear turn signal lights Replacing light bulbs ........................444
Wattage ................................................. 525
Rear view mirror Compass ............................................... 359
Rear window defogger* ..................... 218
Replacing Electronic key battery ......................426
Fuses ........................................................ 428
Light bulbs .............................................444
Reporting safety defects for U.S. owners..........................................550
Reset the maintenance data ............380N
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