key battery Lexus IS250 2006 Do-it-yourself maintenance / LEXUS 2006 IS350/250 THROUGH APRIL 2006 PROD. (OM53508U) User Guide

293
4-3. Do-it-yourself maintenance
4
Maintenance and care
Electronic key battery
Replace the battery with a new one if it is discharged.
■You will need the following items:
●Flathead screwdriver
● Small Phillips-head sc rewdriver
● Lithium battery (CR1632)
■ Replacing the battery
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the +
terminal facing up.
STEP1
STEP2
STEP3

294
4-3. Do-it-yourself maintenance
■If the electronic key battery is discharged
The following symptoms may occur.
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range is reduced.
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, jewelers, or camera stores.
●Replace only with the same or equivalent type recommended by a Lexus dealer.
●Dispose of used batteries according to the local laws.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other components inside the remote control.
●Do not bend either of the battery terminals.

When trouble arises5
317
5-1. Essential information ............. 318If your vehicle needs to be towed............................................ 318
If you think something is wrong .......................................... 325
Fuel pump shut off system ..... 326
Event data recorder ................. 327
5-2. Steps to take in an emergency ............................ 329
If a warning light turns on or a warning buzzer
sounds... ...................................... 329
If a warning message is displayed .................................... 334
If you have a flat tire ................. 348
If the engine will not start ....... 356
If the shift lever cannot be shifted from P..................... 357
If you lose your keys ................ 358
When the electronic key battery is discharged ............ 359
If the vehicle battery is discharged ................................ 362 If your vehicle overheats ........ 365
If the vehicle becomes
stuck ............................................ 367

346
5-2. Steps to take in an emergency
InteriorbuzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once3 times
(For vehicles with an
automatic transmission)
(Flashing)
Indicates that the
driver’s door has
been opened or
closed with the
shift lever in P, the
engine switch in
any mode other
than OFF and the
electronic key
outside of the
detection area.
Turn the engine
switch OFF or
confirm the loca-
tion of the elec-
tronic key.
OnceCon-
tinuous
(Displayed alternately)(For vehicles with an
automatic transmission)
(Flashing)
Indicates that the
driver’s door has
been opened or
closed (with the
shift lever out of in
P, the engine
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. 2 9 3 )

5
When trouble arises
359
5-2. Steps to take in an emergency
When the electronic key battery is discharged
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 in order to perform the follow-
ing 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.
Tr u n k
Turn the mechanical key clock-
wise to open.
If the electronic key battery is di scharged, the doors and trunk can be
opened by the mechanical key. The engine can be still started by following
the procedure.

360
5-2. Steps to take in an emergency
Starting the engineFor vehicles with an automatic tr ansmission: Put the shift lever in P
and apply the brakes.
For vehicles with a manual transmission: Depress the clutch
pedal.
Hold the electronic key close to
the engine switch (within 0.4 in.
[10 mm]). Make sure that the but-
ton side of the key is facing away
from the engine switch.
An alarm will sound to indicate that
the start function cannot detect the
key with the depleted battery if any
of the doors will be opened and
closed while this operation.
For vehicles with an automati c transmission: Press the engine
switch within 5 seconds [after the buzzer sounds], keeping the
brake pedal depressed.
For vehicles with a manual tra nsmission: Press the engine switch
within 5 seconds [after the buzzer sounds], keeping the clutch
pedal depressed.
In the event that the engine still cannot be started, contact your Lexus
dealer.
STEP1
STEP2
STEP3

5
When trouble arises
361
5-2. Steps to take in an emergency
■Replacing the key battery
As this procedure is the temporary measure, it is recommended that the electronic
battery be replaced immediately. (P. 2 9 3 )

375
6-1. Specifications
6
Vehicle specifications
Electrical system
Differential
Battery
Open voltage at
68F (20 C):12.6 12.8 Fully charged
12.2 
12.4 Half charged
11.8 
12.0 Discharged
(Voltage checked 20 minutes after the
key is removed with all the lights turned
off)
Charging rates5A max.
Oil capacity
Front0.74 qt. (0.70 L, 0.61 lmp.qt.)
Rear
IS350:
1.42 qt. (1.35 L, 1.19 lmp.qt.)
IS250 (2WD models): 1.20 qt. (1.15 L, 1.01 lmp.qt.)
IS250 (AWD models): 1.10 qt. (1.05 L, 0.92 lmp.qt.)
Oil type and
viscosity
IS250 (2WD) with
limited slip differential
and IS250 (AWD)Hypoid gear oil API GL-5 Above 0 F (-18 C): SAE90
Below 0 F (-18 C): SAE80W
or SAE80W-90
Others
Toyota Genuine Differential
Gear Oil LT 75W-85 GL-5,
Toyota Genuine Differential
Synthetic Gear Oil or equivalent

405
Alphabetical index
CD player................................................... 181
Chains ......................................................... 153
Child restraint system (CRS)Booster seats, definition.................... 68
Booster seats, installation .................. 72
Convertible seats, definition ........... 68
Convertible seats, installation ......... 72
Infant seats, definition ......................... 68
Infant seats, installation........................ 72
Installing CRS with lower anchorages ...........................................75
Installing CRS with seatbelts ........... 72
Installing CRS with top straps .........76
Child safety Airbag precautions ............................. 63
Battery precautions .............. 273, 364
Child restraint system ........................ 68
Child-protectors..................................... 16
How your child should wear the seatbelt ............................................33
Installing child restraints .......................71
Moon roof .................................................46
Power window lock switch ............... 41
Power window precautions.............43
Removed electronic key battery precautions ....................................... 294
Seat belt comfort guide....................... 31
Seat belt extender precautions ..... 35
Seat belt precautions...........................34
Seat heater precautions ........221, 223
Trunk ..............................................................21
Child-protectors ....................................... 16
Cigarette lighter ..................................... 218 Cleaning
Exterior.................................................... 244
Interior ..................................................... 246
Seat belts ................................................ 247
Clock .......................................................... 213
Coat hooks ..............................................228
Compass ..................................................238
Condenser .............................................. 270
Console box ...........................................206
Cooling system Engine overheating.......................... 365
Cornering assist sensors .................... 133
Cruise control Cruise control......................................... 121
Dynamic radar cruise control........124
Cup holder ............................................. 208
Curtain shield airbags............................ 57
Customizable features .......................395
Daytime running light system ............. 114
Defogger Rear window ......................................... 170
Side mirror.............................................. 170
Dimension................................................ 370
Dinghy towing ............................... 157, 158
Display Dynamic radar cruise control........124
Satellite switch mode .........................214
Trip information ..................................... 110
Warning message .............................334
Do-it-yourself maintenance .............255
Door courtesy lights Door courtesy lights .......................... 201
Wattage ................................................. 383
Door pockets..........................................209
D

406
Alphabetical index
DoorsDoor glasses ............................................. 41
Door lock.................................................... 15
Side mirrors ............................................. 39
Driver's seat belt reminder light ...... 331
Driving Correct posture .................................... 55
Procedures .............................................. 82
Driving position memory ...................... 24
Electric power steering (EPS).......... 139
Electronic key If your electronic key battery is discharged ....................................359
Emergency, in case of If the engine will not start ...............356
If the shift lever cannot be shifted from P ................................... 357
If the vehicle has discharged battery .................................................. 362
If the warning buzzer sounds ...... 329
If the warning light turns on .......... 329
If the warning message is
displayed ............................................ 334
If you have a flat tire .........................348
If you lose your keys.........................358
If you think something is wrong ................................................... 325
If your electronic key battery is discharged ....................................359
If your vehicle becomes stuck..... 367
If your vehicle needs to be towed .................................................... 318
If your vehicle overheats ................365
Engine Compartment ....................................... 261 Engine switch ......................................... 89
Hood ....................................................... 258
How to start the engine .................... 89
If the engine will not start ............... 356
Overheating ........................................ 365
Engine compartment cover ............. 263
Engine coolant Capacity .................................................374
Checking............................................... 268
Preparing and checking before winter........................................151
Engine coolant temperature gauge ...................................................... 100
Engine immobilizer system ................. 50
Engine oil Capacity .................................................373
Checking................................................264
Preparing and checking before winter........................................151
Engine oil maintenance data ........... 267
EPS (Electric power steering) ..........139
Event data recorder ............................ 327
First-aid kit storage belt ..................... 230
Floor mat .................................................. 229
Fluid Brake ........................................................270
Washer.................................................... 274
Fog lights Switch .......................................................... 116
Wattage ................................................. 383
Foot well lighting.................................... 201
Front fog lights Switch .......................................................... 116
Wattage ................................................. 383
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