2006 Lexus IS250 key battery

202
3-3. Using the interior lights
■Illuminated entry system
The following interior lights come on automatically when you approach the vehicle
with the electronic key on your person. Note that the illuminated entry system oper-
ates only when the interior light switch (door position ON/OFF) is ON.
●Front overhead courtesy light
●Rear overhead courtesy light
●Outer foot light
The following lights turn on when any of the doors is unlocked or opened.
●Front interior light
●Rear interior lights
●Front foot well lighting
●Front door courtesy lighting
●Front scuff lighting
The following lights turn on for approximately 15 seconds when the engine switch is
turned to OFF from the IG-ON or ACC mo de. (The lights turn off immediately if
the doors are locked or the engine switch is set to ACC or IG-ON mode.)
●Front overhead courtesy light
●Rear overhead courtesy light
■To prevent the battery from being discharged
If the overhead courtesy lights and interior lights remain ON when the door is not
fully closed or the interior light switch (door position ON/OFF) is ON, the lights will
go off automatically after 20 minutes.
■Customization
Setting (e.g. The time elapsed before lights turn off) can be changed. (
P. 3 9 5 )

Maintenance and care4
243
4-1. Maintenance and care ......... 244Cleaning and protecting the vehicle exterior ................ 244
Cleaning and protecting the vehicle interior ................. 246
4-2. Maintenance ........................... 249 Maintenance requirements ............................ 249
General maintena nce .............. 251
Emission inspection and maintenance (I/M)
programs ................................... 254
4-3. Do-it-yourself maintenance ......................... 255
Do-it-yourself service precautions ............................... 255
Hood.............................................. 258
Positioning the jack................... 259
Engine compartment................. 261
Tires ................................................. 275
Tire inflation pressure.............. 285
Wheels........................................... 289 Air conditioning filter ............... 291
Electronic key battery ............. 293
Checking and replacing
fuses ............................................. 295
Headlight aim ............................. 309
Light bulbs..................................... 310

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