2010 Lexus HS250h change key battery

52
1-3. Opening, closing and locking the doors
HS250h_U_75033U(Canada)
Depending on the position and holding condition of the electronic key, the key may
not be detected correctly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention may not operate.)
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors, unlocking the trunk: Use the mechanical key.
(→ P. 5 3 3 )
●Starting the hybrid system: →P. 5 3 4
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year
and a half.)
●If the battery becomes low, an alarm will sound in the cabin when the hybrid sys-
tem stops. ( →P. 4 8 )
●As the electronic key always transmits radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indicate
that the electronic key battery may be depleted. Replace the battery when nec-
essary. ( →P. 4 5 3 )
• The smart access system with push-button start or the wireless remote con- trol does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
●To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) of
the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
•Glass top ranges
•Table lamps
■When the electronic key battery is fully depleted
→ P. 4 5 3
■Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features →P. 5 74 )

55
1-3. Opening, closing and locking the doors
1
Before driving
HS250h_U_75033U(Canada)
■Pa n i c m o d e
■Security feature
→P. 4 8
■Alarm
Using the wireless remote control to lock the doors will set the alarm system.
(→ P. 9 8 )
■Conditions affecting operation
→P. 4 9
■If the wireless remote control does not operate properly
Locking and unlocking the doors, unlocking the trunk: Use the mechanical key.
(→ P. 5 3 3 )
■Electric key battery depletion
→P. 5 2
■When the electric key battery is fully depleted
→P. 4 5 3
■Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features →P. 5 74 ) When is pressed for longer than about
one second, an alarm will sound intermit-
tently and the vehicle lights will flash to deter
any person from trying to break into or dam-
age your vehicle.
To stop the alarm, press any button on the
electronic key.

87
1-5. Opening and closing the windows and moon roof
1
Before driving
HS250h_U_75033U(Canada)
■The power windows can be operated when
The “POWER” switch is in ON mode.
■Operating the power windows after turning the hybrid system off
The power windows can be operated for approximately 43 seconds even after the
“POWER” switch is turned to ACCESSORY mode or turned off. They cannot,
however, be operated once either front door is opened.
■Jam protection function
If an object becomes caught between the window and the window frame, window
travel is stopped and the window is opened slightly.
■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key. *
(→ P. 5 3 3 )
●The power windows can be opened using the wireless remote control. *
(→ P. 5 4 )
*: This setting must be customized at your Lexus dealer.
■When the 12-volt battery is disconnected
The window lock switch is disabled. If necessary, press the window lock switch after
reconnecting the battery.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features →P. 5 74 )

362
3-5. Using the interior lights
HS250h_U_75033U(Canada)
■Illuminated entry system
The lights automatically turn on/off according to “POWER” switch mode, the pres-
ence of the electronic key, whether the doors are locked/unlocked, and whether
the doors are opened/closed.
■To prevent 12-volt battery discharge
If the interior lights remain on when the door is not fully closed and the interior light
switch (door position on/ off) is on, the lights will go off automatically after 20 min-
utes.
■Customization
Settings (e.g. the time elapsed before the lights turn off) can be changed. (Custom-
izable features →P. 5 74 )
Personal lights

5
When trouble arises
535
5-2. Steps to take in an emergency
HS250h_U_75033U(Canada)To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“POWER” switch. Modes can be changed each time the switch is
pressed. (
→P. 1 4 6 )
To start the hybrid system: Press the “POWER” switch within 10
seconds of the buzzer sounding, keeping the brake pedal
depressed.
In the event that the hybrid system still cannot be operated, contact your
Lexus dealer.
■Stopping the hybrid system
In the same method as the normal hybrid system stopping procedure, completely
stop the vehicle and then press the “POWER” switch.
■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 is depleted.
( → P. 4 5 3 )
■When the electronic key does not work properly
Make sure that the smart access system with push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features →P. 5 74 )

595
Alphabetical index
HS250h_U_75033U(Canada)
Automatic light control system ........183
AUX adapter ......................................... 307
Auxiliary box .......................................... 370
Back-up lightsReplacing light bulbs ....................... 470
Wattage .................................................558
Battery
Checking ............................................... 433
If the vehicle has a discharged 12-volt battery .................................. 536
Preparing and checking
before winter.....................................244
Bluetooth
®................................................ 311
Bottle holders ........................................ 369
Brake Fluid .......................................................... 556
Parking brake ........................................160
Brake assist ..............................................225
Break-in tips ............................................. 137
Brightness control Instrument panel light
control ...................................................163
Care Exterior ................................................... 402
Interior.....................................................406
Seat belts ............................................... 407
Cargo capacity ......................................243
CD changer ............................................ 273
CD player.................................................273
Chains........................................................245 Child restraint system
Booster seats, definition .................... 121
Booster seats, installation ................. 131
Convertible seats, definition............ 121
Convertible seats, installation ........129
Front passenger occupant
classification system ......................... 116
Infant seats, definition .......................... 121
Infant seats, installation ..................... 128
Installing CRS with LATCH
anchors..................................................126
Installing CRS with seat belts ........ 128
Installing CRS with top tether straps ......................................................132
Child safety Airbag precautions ................................ 111
Child restraint system ......................... 121
Child-protectors .................................. 58
How your child should wear the seat belt .......................................... 75
Installing child restraints................... 125
Moon roof precautions........................91
Power window lock switch ..............86
Power window precautions ........... 88
Removed electronic key battery precautions........................................454
Seat belt extender precautions...... 78
Seat belt precautions .......................... 76
Seat heater precautions..................376
Trunk precautions................................. 62
12-volt battery precautions ...........435
Child-protectors ......................................58
Cleaning Exterior....................................................402
Interior .................................................... 406
Seat belts ................................................407
B
C
*: Refer to “Navigation System Owner’s Manual”.