2009 Lexus IS250 key battery

5
When trouble arises
403
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. 2 8 )
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once
(Vehicles with an auto- matic transmission)Indicates that the
electronic key
does not operate
properly.
 P. 4 1 8

(Vehicles with an auto-
matic transmission)
Once
(Vehicles with a manual transmission)Indicates that the
electronic key
does not operate
properly.
P. 4 1 8

(Vehicles with a manual
transmission)

5
When trouble arises
417
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. 21) in order to perform
the following operations.
Locks all doors
Closes the windows/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/moon roof
(turn and hold)
Return the cover to the original
position after use.
If communication between the electron ic key and vehicle is interrupted
(  P. 28) or the electronic key cannot 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.

420
5-2. Steps to take in an emergency
To change “ENGINE START STOP” switch modes: Within 10
seconds of the buzzer sounding, release the clutch pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the switch is pressed.
( P. 1 2 6 )
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds after the buzz er sounds, keeping the clutch
pedal depressed.
In the event that the engine still cannot be started, contact your Lexus
dealer.
■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: Shi ft 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 the temporary measure, it is recommended that the
electronic key battery be replaced i mmediately when the battery depletes.
(  P. 3 4 5 )
STEP3

477
Alphabetical index
CareExterior ....................................................292
Interior..................................................... 295
Seat belts ............................................... 296
Cargo capacity ....................................... 196
Cargo hooks ...........................................278
CD changer ............................................229
CD player.................................................229
Chains ....................................................... 200
Child restraint system Booster seats, definition.................. 100
Booster seats, installation ................ 107
Convertible seats, definition ......... 100
Convertible seats, installation ....... 107
Front passenger occupant classification system ........................ 95
Infant seats, definition ....................... 100
Infant seats, installation...................... 107
Installing CRS with lower anchorages ........................................ 105
Installing CRS with seat belts ........ 107
Installing CRS with top straps ........ 110 Child safety
Airbag precautions ..............................90
Battery precautions .............. 323, 423
Child restraint system .......................100
Child-protectors ...................................40
How your child should wear the seat belt ..........................................59
Installing child restraints................... 104
Moon roof precautions...................... 73
Power window lock switch ..............69
Power window precautions ............ 70
Removed electronic key battery precautions........................................346
Seat belt comfort guide ..................... 57
Seat belt extender precautions........61
Seat belt precautions ..........................60
Seat heater precautions....... 268, 271
Trunk precautions................................. 45
Child-protectors ...................................... 40
Cigarette lighter.................................... 264
Cleaning Exterior.................................................... 292
Interior .....................................................295
Seat belts ................................................296
Clock .........................................................259
Coat hooks .............................................. 276
Compass .................................................. 287
Condenser ............................................... 319
Console box ........................................... 252
Cooling system Engine overheating........................... 424
Cornering assist sensors .................... 180C

478
Alphabetical index
Cruise controlCruise control .......................................166
Dynamic radar cruise control .......170
Cup holder ..............................................254
Curtain shield airbags............................84
Customizable features ........................ 461
Daytime running light system ........... 157
Defogger Rear window ..........................................218
Side mirror ..............................................218
Dimension ................................................430
Dinghy towing ............................ 205, 206
Display Dynamic radar cruise control .......170
Satellite switch mode .......................260
Trip information ....................................152
Warning message............................. 392
Do-it-yourself maintenance .............304
Door courtesy lights Door courtesy lights..........................247
Wattage.................................................. 445
Door pockets..........................................256
Doors Door glasses ........................................... 69
Door lock.................................24, 36, 39
Side mirrors ............................................. 66
Driver's seat belt reminder light .... 385
Driving Correct posture .................................... 82
Procedures .............................................. 116
Driving position memory ......................48 Electric power steering....................... 186
Electronic key
If the electronic key does not operate properly.............................. 417
Emergency, in case of If the engine will not start ................. 413
If the shift lever cannot be shifted from P..................................... 415
If the vehicle has discharged battery ................................................... 421
If the warning buzzer sounds...... 383
If the warning light turns on.......... 383
If the warning message is displayed .............................................392
If you have a flat tire ........................ 404
If you lose your keys .......................... 416
If you think something is wrong ...................................................379
If the electronic key does not operate properly.............................. 417
If your vehicle becomes stuck ..... 427
If your vehicle needs to be towed ....................................................373
If your vehicle overheats.................424
Emergency flashers Switch ....................................................... 372
Engine Compartment ....................................... 310
Engine switch ........................................ 126
Hood ....................................................... 307
How to start the engine ................... 126
Identification number ........................ 431
If the engine will not start ................. 413
Ignition switch ....................................... 126
Overheating .........................................424
D
E

482
Alphabetical index
Parking assist sensors ..........................180
Parking brake .......................................... 140
Parking lightsReplacing light bulbs........................ 363
Switch ....................................................... 156
Wattage.................................................. 445
PCS ............................................................. 192
Personal lights Switch ...................................................... 249
Power outlet............................................265
Power windows ........................................ 69
Pre-collision system.............................. 192
Radar cruise control ............................. 170
Radiator ..................................................... 319
Radio .......................................................... 222
RDS ............................................................ 223
Rear sunshade ....................................... 273
Rear turn signal lights Replacing light bulbs........................ 363
Wattage.................................................. 445
Rear view mirror Compass ............................................... 287
Rear window defogger........................ 218
Replacing Electronic key battery...................... 345
Fuses ........................................................ 347
Light bulbs............................................. 363
Reporting safety defects for U.S. owners .......................................... 470 Scuff lighting ............................................247
Seat belts
Adjusting the seat belt ........................ 57
Automatic locking retractor ........... 58
Child restraint system installation ............................................ 104
Cleaning and maintaining the seat belts .................................... 296
Emergency locking retractor......... 58
How to wear your seat belt ............ 56
How your child should wear the seat belt.......................................... 59
Pregnant women, proper seat belt use ........................ 58
Reminder light..................................... 385
Seat belt extenders.............................. 59
Seat belt pretensioners ...................... 57
Seat heaters ................................. 266, 269
Seat position memory............................ 52
Seat ventilators ...................................... 269
Seating capacity......................................199
Seats Adjustment ...............................................46
Adjustment precautions .................... 47
Child seats/child restraint system installation............................ 104
Cleaning ................................................ 295
Driver’s seat position memory ...... 48
Front passenger seat position memory ..................................................52
Head restraint .........................................54
Properly sitting in the seat.................82
Seat heaters ............................. 266, 269
Ventilated seats.................................. 269
Service reminder indicators ............ 148P
R
S

485
Alphabetical index
Warning buzzersBrake system ....................................... 383
Open door ..........................................385
Seat belt reminder ............................385
Warning lights Anti-lock brake system .................. 384
Brake assist system .......................... 384
Brake system ....................................... 383
Charging system ............................... 384
Electric power steering warning light ..................................... 384
Low fuel level.......................................385
Malfunction indicator lamp .......... 384
Master warning light ........................385
Open door ...........................................385
Pre-collision system ......................... 384
Pretensioners ...................................... 384
Seat belt reminder light ..................385
SRS airbags .......................................... 384
Tire pressure warning light........................................................385
Warning messages AWD system ....................................... 393
Dynamic radar cruise control .......................393, 395
Engine oil level .................................... 395
Engine oil maintenance.................. 395
Engine oil pressure........................... 392
Hood ....................................................... 395
Intuitive parking assist .........393, 395
Moon roof ............................................. 395
Open door ........................................... 395
Parking brake ...................................... 395
Pre-collision system .............393, 395 Smart access system with
push-button start ........................... 400
Steering lock.........................................393
Tire pressure warning system................... 393, 395
Trunk ....................................................... 395
Washer fluid ........................................ 395
Washer Checking ............................................... 324
Preparing and checking before winter ................................... 200
Switch........................................................ 160
Washing and waxing ........................... 292
Weight Cargo capacity .................................... 196
Load limits .............................................. 199
Weight.................................................... 430
Wheels ......................................................340
Window glasses ...................................... 69
Window lock switch ............................... 69
Windows Power windows .....................................69
Rear window defogger.................... 218
Washer .................................................... 160
Windshield wipers................................. 160
Wireless remote control key Replacing the battery.......................345
WMA disc ............................................... 235W
*: Refer to the “Navigatio n System Owner’s Manual”

486
What to do if...
What to do if...
A tire puncturesP. 4 0 4If you have a flat tire
The engine does not start
P. 4 1 3If the engine will not start
P. 7 7Engine immobilizer system
P. 4 1 7If the vehicle battery is discharged
The shift lever cannot be
moved outP. 4 1 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. 4 2 4If your vehicle overheats
The key is lostP. 4 1 6If you lose your keys
The battery runs outP. 4 2 1If the vehicle battery is discharged
The doors cannot be lockedP. 3 9Doors
The horn begins to soundP. 7 9Alarm
The vehicle is stuck in mud or
sandP. 4 2 7If the vehicle becomes stuck