2010 Lexus IS250C key battery

5
When trouble arises
485
5-2. Steps to take in an emergency
10_IS250C/350C_U
*: 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 3

(Vehicles with an auto-
matic transmission)
Once
(Vehicles with a manual transmission)Indicates that the
electronic key
does not operate
properly.
→P. 5 0 3

(Vehicles with a manual
transmission)

5
When trouble arises
501
5-2. Steps to take in an emergency
10_IS250C/350C_U
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 electronic 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 such cases, the doors and trunk can be
opened or the engine can be started by following the procedure below.

5
When trouble arises
505
5-2. Steps to take in an emergency
10_IS250C/350C_U
■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 2 5 )

573
Alphabetical index
10_IS250C/350C_U
Back-up lightsWattage ................................................... 541
Battery Checking ............................................... 402
If the vehicle has a discharged battery..................................................506
Preparing and checking before winter .................................... 220
Bluetooth
® audio ................................ 289
Bluetooth® phone ............................... 307
Brake Fluid ..........................................................400
Parking brake ........................................ 157
Brake assist ............................................. 204
Care
Exterior ....................................................374
Interior......................................................377
Seat belts ............................................... 378
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 ............ 404, 508
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........................................426
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.................................................... 374
Interior ..................................................... 377
Seat belts ................................................378
Clock .........................................................348
Compass ..................................................368
Condenser ............................................. 400
Console box ............................................ 341
Cooling system Engine overheating.......................... 509
Cornering assist sensors .................... 198
B
C

574
Alphabetical index
10_IS250C/350C_U
Cruise controlCruise control ...................................... 183
Dynamic radar crui se control .......187
Cup holder ..............................................343
Customizable features .......................557
Daytime running light system ............174
Defogger
Rear window........................................ 238
Side mirror ............................................ 238
Dimension ................................................526
Dinghy towing .............................225, 226
Display Dynamic radar crui se control .......187
Satellite switch mode ....................... 349
Trip information ....................................169
Warning message..............................472
Do-it-yourself maintenance ............ 386
Door courtesy lights Door courtesy lights.........................338
Wattage....................................................541
Doors
Door lock................................ 28, 40, 43
Door windows ....................................... 78
Side mirrors ............................................. 75
Driver's seat belt reminder light .....465
Driving Correct posture .................................... 98
Procedures ............................................. 132
Driving position memory ...................... 56 Electric power steering...................... 204
Electronic key
If the electronic key does not operate properly..............................501
Emergency, in case of If the engine will not start ................497
If the retractable hardtop does not close ................................... 514
If the shift lever cannot be shifted from P................................... 499
If the vehicle has a discharged battery .................................................506
If the warning buzzer sounds...... 463
If the warning light turns on.......... 463
If the warning message is displayed ............................................. 472
If you have a flat tire ........................ 486
If you lose your keys ........................500
If you think something is wrong .................................................. 459
If the electronic key does not operate properly..............................501
If your vehicle becomes stuck ...... 512
If your vehicle needs to be towed ................................................... 453
If your vehicle overheats................509
Emergency flashers Switch...................................................... 452
Engine Compartment ......................................392
Engine switch ........................................ 142
Hood ....................................................... 389
How to start the engine ................... 142
Identification number .......................527
If the engine will not start ................497
Ignition switch ....................................... 142
Overheating ........................................509
D
E

578
Alphabetical index
10_IS250C/350C_U
Parking assist sensors .......................... 198
Parking brake .......................................... 157
Parking lightsReplacing light bulbs........................ 444
Switch ........................................................ 173
Wattage....................................................541
PCS ............................................................. 212
Personal lights Switch ...................................................... 339
Power outlet............................................354
Power windows ........................................ 78
Pre-collision system.............................. 212
Radar cruise control ............................. 187
Radiator ................................................... 400
Radio .......................................................... 242
RDS ............................................................ 244
Rear turn signal lights
Replacing light bulbs........................ 444
Wattage....................................................541
Rear view mirror Compass ...............................................368
Rear window defogger.......................238
Replacing Electronic key battery...................... 425
Fuses .........................................................427
Light bulbs............................................. 444
Tires ..........................................................486
Reporting safety defects for U.S. owners ..........................................564
Retractable hardtop ................................ 81 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 .................................... 378
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..................................... 465
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 ................................................. 377
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 .............165P
R
S

581
Alphabetical index
10_IS250C/350C_U
Warning buzzersBrake system ....................................... 463
Open door .......................................... 465
Seat belt reminder ............................ 465
Warning lights Anti-lock brake system .................. 464
Brake assist system .......................... 464
Brake system ....................................... 463
Charging system ............................... 463
Electric power steering
warning light ..................................... 464
Low fuel level....................................... 465
Malfunction indicator lamp .......... 464
Master warning light ........................ 465
Open door ........................................... 465
Pre-collision system ......................... 464
Pretensioners ...................................... 464
Seat belt reminder light .................. 465
SRS airbags .......................................... 464
Tire pressure warning
light........................................................ 465
Warning messages
Dynamic radar cruise control ........................473, 475
Engine oil level .................................... 475
Engine oil maintenance.................. 475
Engine oil pressure............................472
Hood ....................................................... 475
Intuitive parking assist ..........473, 475
Open door ........................................... 475
Parking brake ...................................... 475
Pre-collision system ..............473, 475
Retractable hardtop ..............473, 475 Smart access system with
push-button start ............................482
Steering lock......................................... 473
Tire pressure warning system.................... 473, 475
Trunk ........................................................475
Washer fluid ......................................... 475
Washer
Checking .............................................. 405
Preparing and checking before winter ....................................220
Switch......................................................... 177
Washing and waxing ........................... 374
Weight Cargo capacity .....................................216
Load limits ...............................................219
Weight.....................................................526
Wheels ......................................................420
Window glasses ...................................... 78
Window lock switch ............................... 78
Windows Power windows ..................................... 78
Rear window defogger...................238
Washer ..................................................... 177
Windshield wipers.................................. 177
Wireless remote control key Replacing the battery.......................425
WMA disc ............................................... 257W

582
10_IS250C/350C_U
What to do if...
What to do if...
A tire puncturesP. 4 8 6If you have a flat tire
The engine does not start
P. 4 9 7If the engine will not start
P. 9 3Engine immobilizer system
P. 5 0 6If the vehicle battery is discharged
The shift lever cannot be
moved outP. 4 9 9If 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 0 9If your vehicle overheats
The key is lostP. 5 0 0If you lose your keys
The battery runs outP. 5 0 6If 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 2If the vehicle becomes stuck