2010 Lexus IS250 Key battery

5
When trouble arises
489
5-2. Steps to take in an emergency
IS350/250_U
InteriorbuzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once3 times
(Vehicles with an auto-
matic transmission)
(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)
(Vehicles with an auto-matic transmission)
(Flashing)
Indicates that the
driver’s door has
been opened or
closed (with the
shift lever out of in
P, t h e “ E N G I N E
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 3 4 )

5
When trouble arises
491
5-2. Steps to take in an emergency
IS350/250_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 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. 5 0 6

(Vehicles with an auto-
matic transmission)
Once
(Vehicles with a manual transmission)Indicates that the
electronic key
does not operate
properly.
→P. 5 0 6

(Vehicles with a manual
transmission)

5
When trouble arises
505
5-2. Steps to take in an emergency
IS350/250_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 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 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.

508
5-2. Steps to take in an emergency
IS350/250_UTo change “ENGINE START ST
OP” 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 3 4 )
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds after the buzzer 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: 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. 434)
STEP3

565
Alphabetical index
IS350/250_U
BrakeFluid ..........................................................408
Parking brake ........................................148
Brake assist ............................................... 196
Care
Exterior ................................................... 382
Interior.....................................................385
Seat belts ............................................... 386
Cargo capacity ..................................... 206
Cargo hooks .......................................... 360
CD changer ............................................. 241
CD player.................................................. 241
Chains......................................................... 210
Child restraint system Booster seats, definition...................109
Booster seats, installation ..................116
Convertible seats, definition ..........109
Convertible seats, installation .........116
Front passenger occupant
classification system .......................104
Infant seats, definition ........................109
Infant seats, installation........................116
Installing CRS with LATCH
anchors ................................................... 114
Installing CRS with seat belts ..........116
Installing CRS with top straps .........119 Child safety
Airbag precautions ..............................99
Battery precautions ...................412, 511
Child restraint system ....................... 109
Child-protectors ................................... 44
How your child should wear
the seat belt ..........................................65
Installing child restraints..................... 113
Moon roof precautions...................... 82
Power window lock switch .............. 76
Power window precautions ............ 78
Removed electronic key
battery precautions .......................435
Seat belt comfort guide ..................... 63
Seat belt extender precautions...... 67
Seat belt precautions ..........................66
Seat heater precautions.....350, 353
Trunk precautions................................. 49
Child-protectors ...................................... 44
Cigarette lighter....................................346
Cleaning Exterior....................................................382
Interior .................................................... 385
Seat belts ............................................... 386
Clock .......................................................... 341
Coat hooks ............................................. 358
Compass ..................................................369
Condenser ............................................. 408
Console box ........................................... 334
Cooling system Engine overheating............................ 512
Cornering assist sensors .................... 190
C

566
Alphabetical index
IS350/250_U
Cruise controlCruise control ....................................... 175
Dynamic radar crui se control ....... 179
Cup holder ..............................................336
Curtain shield airbags............................ 93
Customizable features .......................549
Daytime running light system ........... 166
Defogger Rear window........................................ 228
Side mirror ............................................ 228
Dimension ................................................. 518
Dinghy towing ............................... 215, 216
Display
Dynamic radar crui se control ....... 179
Satellite switch mode ....................... 342
Trip information ..................................... 161
Warning message............................ 480
Do-it-yourself maintenance .............394
Door courtesy lights Door courtesy lights......................... 329
Wattage.................................................. 533
Door pockets......................................... 338
Doors Door lock................................ 28, 40, 43
Door windows ....................................... 76
Side mirrors ..............................................73
Driver's seat belt reminder light ..... 473
Driving Correct posture ...................................... 91
Procedures ............................................. 124
Driving position memory ......................53 Electric power steering........................196
Electronic key
If the electronic key does not operate properly............................505
Emergency, in case of If the engine will not start .................501
If the shift lever cannot be shifted from P................................... 503
If the vehicle has a discharged battery .................................................509
If the warning buzzer sounds........ 471
If the warning light turns on............ 471
If a warning message is displayed ............................................ 480
If you have a flat tire .........................492
If you lose your keys ........................ 504
If you think something is wrong ...................................................467
If the electronic key does not operate properly............................505
If your vehicle becomes stuck ...... 515
If your vehicle needs to be towed ..................................................... 461
If your vehicle overheats.................. 512
Emergency flashers Switch...................................................... 460
Engine Compartment ..................................... 400
Engine switch ........................................ 134
Hood ........................................................397
How to start the engine ................... 134
Identification number ........................ 519
If the engine will not start .................501
Ignition switch ....................................... 134
Overheating .......................................... 512
D
E

570
Alphabetical index
IS350/250_U
Parking assist sensors .......................... 190
Parking brake .......................................... 148
Parking lightsReplacing light bulbs........................ 452
Switch ....................................................... 165
Wattage.................................................. 533
PCS ............................................................202
Personal lights Switch ........................................................ 331
Power outlet............................................ 347
Power windows ........................................ 76
Pre-collision system.............................202
Radar cruise control ............................. 179
Radiator ................................................... 408
Radio .......................................................... 233
RDS ............................................................235
Rear sunshade .......................................355
Rear turn signal lights Replacing light bulbs........................ 452
Wattage.................................................. 533
Rear view mirror
Compass ............................................... 369
Rear window defogger.......................228
Replacing Electronic key battery...................... 434
Fuses ........................................................ 436
Light bulbs............................................. 452
Reporting safety defects for U.S. owners ......................................... 558 Safety Connect ..................................... 373
Scuff lights................................................ 329
Seat belts
Adjusting the seat belt ........................63
Automatic locking retractor ............64
Child restraint system
installation .............................................. 113
Cleaning and maintaining
the seat belts .................................... 386
Emergency locking retractor..........64
How to wear your seat belt .............62
How your child should wear
the seat belt.......................................... 65
Pregnant women,
proper seat belt use .........................64
Reminder light......................................473
Seat belt extenders.............................. 65
Seat belt pretensioners ......................63
Seat heaters ..................................348, 351
Seat position memory............................ 57
Seat ventilators ....................................... 351
Seating capacity.................................... 209
Seats Adjustment ................................................ 51
Adjustment precautions ....................52
Child seats/child restraint
system installation .............................. 113
Cleaning ................................................ 385
Driver’s seat position memory .......53
Front passenger seat position
memory ..................................................57
Head restraint ........................................ 59
Properly sitting in the seat.................. 91
Seat heaters ...............................348, 351
Ventilated seats.................................... 351
Service reminder indicators .............157P
R
S

573
Alphabetical index
IS350/250_U
Warning buzzersBrake system ......................................... 471
Open door ...........................................473
Seat belt reminder .............................473
Warning lights Anti-lock brake system ...................472
Brake assist system ...........................472
Brake system ......................................... 471
Charging system ................................472
Electric power steering
warning light ......................................472
Low fuel level........................................473
Malfunction indicator lamp ...........472
Master warning light .........................473
Open door ............................................473
Pre-collision system ..........................472
Pretensioners .......................................472
Seat belt reminder light ...................473
SRS airbags ...........................................472
Tire pressure warning
light.........................................................473
Warning messages
AWD system .........................................481
Dynamic radar cruise control ........................ 481, 483
Engine oil level .................................... 483
Engine oil maintenance.................. 483
Engine oil pressure...........................480
Hood ....................................................... 483
Intuitive parking assist .......... 481, 483
Moon roof............................................. 483
Open door ........................................... 483
Parking brake ...................................... 483
Pre-collision system .............. 481, 483 Smart access system with
push-button start ........................... 488
Steering lock.......................................... 481
Tire pressure warning system.....................481, 483
Trunk ....................................................... 483
Washer fluid ........................................ 483
Washer
Checking ................................................ 413
Preparing and checking before winter ..................................... 210
Switch........................................................ 169
Washing and waxing ...........................382
Weight Cargo capacity .................................. 206
Load limits ............................................ 209
Weight...................................................... 518
Wheels ...................................................... 429
Window glasses ...................................... 76
Window lock switch ............................... 76
Windows Power windows ..................................... 76
Rear window defogger...................228
Washer .................................................... 169
Windshield wipers................................. 169
Windshield wiper de-icer.................. 229
Wireless remote control key Replacing the battery.......................434
WMA disc ...............................................248W