2010 Lexus IS250C key battery

5
When trouble arises
491
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 2 )
Interior
buzzerExterior buzzerMessageDetailsCorrection
procedure
Once
(Vehicles with an auto- matic transmission)Indicates that the
electronic key
does not operate
properly.
 P. 5 0 9

(Vehicles with an auto-
matic transmission)
Once
(Vehicles with a manual transmission)Indicates that the
electronic key
does not operate
properly.
P. 5 0 9

(Vehicles with a manual
transmission)

5
When trouble arises
507
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
Doors
Remove the cover on the driver’s
door handle using the mechanical
key (P. 25) in order to perform
the following operations.
Locks both side doors
Unlocks the door
Turning the key rearward unlocks
the driver's door. Turning the key
once again unlocks the passenger’s
door.
Return the cover to the original
position after use.
If communication between the electron ic key and vehicle is interrupted
(  P. 32) or the electronic key cann ot 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.

5
When trouble arises
511
5-2. Steps to take in an emergency
■Stopping the engine
For vehicles with an automatic transmission: Shift the shift lever to P and press the
“ENGINE START STOP” switch as you normally do when stopping the engine.
For vehicles with a manual transmission: Shift the shift lever to N position and press
the “ENGINE START STOP” switch as you normally 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 3 1 )

581
Alphabetical index
Back-up lightsWattage ................................................. 547
Battery Checking ...............................................408
If the vehicle has a discharged battery.................................................... 512
Preparing and checking before winter .................................... 220
Bluetooth
® audio ................................ 289
Bluetooth® phone ............................... 307
Brake Fluid .......................................................... 406
Parking brake ........................................ 157
Brake assist ............................................. 204
Care Exterior ...................................................380
Interior..................................................... 383
Seat belts ............................................... 384
Cargo capacity ....................................... 216
Cargo hooks .......................................... 359
CD changer ........................................... 250
CD player................................................ 250
Chains ....................................................... 220
Child restraint system Booster seats, definition.....................116
Booster seats, installation ................ 123
Convertible seats, definition ............116
Convertible seats, installation ....... 123
Front passenger occupant classification system ...........................111
Infant seats, definition ..........................116
Infant seats, installation...................... 123
Installing CRS with LATCH anchors ................................................... 121
Installing CRS with seat belts ........ 123 Installing CRS with top straps........126
Child safety Airbag precautions ............................ 106
Battery precautions .................410, 514
Child restraint system ......................... 116
How your child should wear the seat belt ..........................................68
Installing child restraints................... 120
Power window lock switch .............. 78
Power window precautions ........... 80
Removed electronic key battery precautions........................................ 432
Seat belt guide........................................66
Seat belt extender precautions...... 70
Seat belt precautions ..........................69
Seat heater precautions..................357
Trunk precautions................................. 49
Cigarette lighter....................................353
Cleaning Exterior................................................... 380
Interior .................................................... 383
Seat belts ............................................... 384
Clock .........................................................348
Compass ..................................................368
Condenser ..............................................406
Console box ............................................ 341
Cooling system Engine overheating............................ 515
Cornering assist sensors .................... 198
B
C

582
Alphabetical index
Cruise controlCruise control ...................................... 184
Dynamic radar cruise control .......187
Cup holder ..............................................343
Customizable features .......................564
Daytime running light system ........... 175
Defogger Rear window ........................................ 238
Side mirror ............................................ 238
Dimension ................................................532
Dinghy towing .............................225, 226
Display Dynamic radar cruise control .......187
Satellite switch mode ....................... 349
Trip information ....................................170
Warning message............................. 478
Do-it-yourself maintenance .............392
Door courtesy lights Door courtesy lights.........................338
Wattage.................................................. 547
Doors Door lock................................ 28, 40, 43
Door windows ....................................... 78
Side mirrors ............................................. 75
Driver's seat belt reminder light .......471
Driving Correct posture .................................... 98
Procedures ............................................. 132
Driving position memory ...................... 56 Electric power steering...................... 204
Electronic key
If the electronic key does not operate properly............................ 507
Emergency, in case of If the engine will not start ............... 503
If the retractable hardtop does not close ................................. 520
If the shift lever cannot be shifted from P...................................505
If the vehicle has a discharged battery ................................................... 512
If the warning buzzer sounds...... 469
If the warning light turns on.......... 469
If the warning message is displayed ............................................ 478
If you have a flat tire .........................492
If you lose your keys ........................506
If you think something is wrong .................................................. 465
If the electronic key does not operate properly............................ 507
If your vehicle becomes stuck ......518
If your vehicle has to be stopped in an emergency ......... 530
If your vehicle needs to be towed ................................................... 459
If your vehicle overheats.................. 515
Emergency flashers Switch ...................................................... 458
D
E

586
Alphabetical index
Parking assist sensors .......................... 198
Parking brake .......................................... 157
Parking lightsReplacing light bulbs........................450
Switch ........................................................ 174
Wattage.................................................. 547
PCS ............................................................. 212
Personal lights Switch ...................................................... 339
Power outlet............................................354
Power windows ........................................ 78
Pre-collision system.............................. 212
Radar cruise control ............................. 187
Radiator ....................................................406
Radio .......................................................... 242
RDS ............................................................ 244
Rear turn signal lights Replacing light bulbs........................450
Wattage.................................................. 547
Rear view mirror Compass ...............................................368
Rear window defogger.......................238
Replacing Electronic key battery........................ 431
Fuses ........................................................ 433
Light bulbs.............................................450
Tires .......................................................... 492
Reporting safety defects for U.S. owners .......................................... 572
Retractable hardtop ................................ 81 Safety connect ....................................... 372
Scuff lights................................................ 338
Seat belts
Adjusting the seat belt ....................... 65
Automatic locking retractor ............ 67
Child restraint system installation ............................................ 120
Cleaning and maintaining the seat belts .................................... 384
Emergency locking retractor.......... 67
How to wear your seat belt ............ 65
How your child should wear the seat belt.......................................... 68
Pregnant women, proper seat belt use ........................ 68
Reminder light....................................... 471
Seat belt extenders.............................. 68
Seat belt guide ........................................66
Seat belt pretensioners ...................... 67
Seat heaters ............................................ 355
Seat position memory............................ 60
Seat ventilators ...................................... 355
Seating capacity......................................219
Seats Adjustment ................................................ 51
Adjustment precautions ................... 55
Child seats/child restraint system installation............................ 120
Cleaning ................................................ 383
Driver’s seat position memory ...... 56
Front passenger seat position memory ................................................. 60
Head restraint ......................................... 62
Properly sitting in the seat................ 98
Seat heaters ......................................... 355
Ventilated seats.................................. 355
Service reminder indicators .............166P
R
S

589
Alphabetical index
Warning buzzersBrake system ....................................... 469
Open door ............................................ 471
Seat belt reminder .............................. 471
Warning lights Anti-lock brake system .................. 470
Brake assist system .......................... 470
Brake system ....................................... 469
Charging system ............................... 469
Electric power steering warning light ..................................... 470
Low fuel level......................................... 471
Malfunction indicator lamp .......... 470
Master warning light .......................... 471
Open door ............................................. 471
Pre-collision system ......................... 470
Pretensioners ...................................... 470
Seat belt reminder light .................... 471
SRS airbags .......................................... 470
Tire pressure warning light.......................................................... 471
Warning messages Dynamic radar cruise control .........................479, 481
Engine oil level ......................................481
Engine oil maintenance....................481
Engine oil pressure........................... 478
Hood .........................................................481
Intuitive parking assist ...........479, 481
Open door .............................................481
Parking brake ........................................481
Pre-collision system ...............479, 481
Retractable hardtop ...............479, 481 Smart access system with
push-button start ........................... 488
Steering lock......................................... 479
Tire pressure warning system..................... 479, 481
Trunk ......................................................... 481
Washer fluid .......................................... 481
Washer Checking .................................................. 411
Preparing and checking before winter ....................................220
Switch........................................................ 178
Washing and waxing .......................... 380
Weight Cargo capacity .....................................216
Load limits ...............................................219
Weight.....................................................532
Wheels ...................................................... 426
Window glasses ...................................... 78
Window lock switch ............................... 78
Windows Power windows ..................................... 78
Rear window defogger...................238
Washer .................................................... 178
Windshield wipers................................. 178
Wireless remote control key Replacing the battery........................ 431
WMA disc ............................................... 257W

590
What to do if...
What to do if...
A tire puncturesP. 4 9 2If you have a flat tire
The engine does not start
P. 5 0 3If the engine will not start
P. 9 3Engine immobilizer system
P. 5 1 2If the vehicle battery is discharged
The shift lever cannot be
moved outP. 5 0 5If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 1 5If your vehicle overheats
The key is lostP. 5 0 6If you lose your keys
The battery runs outP. 5 1 2If the vehicle battery is discharged
The doors cannot be lockedP. 4 3Doors
The horn begins to soundP. 9 5Alarm
The vehicle is stuck in mud or
sandP. 5 1 8If the vehicle becomes stuck