
468
4-3. Do-it-yourself maintenance
HS250h_U_75050U
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance
shops or camera stores.
●Replace only with the same or equivalent type recommended by the manufac-
turer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer
can replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range will be reduced.
CAUTION
■Removed battery and other parts
Keep away from children. These parts are small and if swallowed by a child, they can
cause choking. Failure to do so could result in death or serious injury.
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.

544
5-2. Steps to take in an emergency
HS250h_U_75050U
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked functions
DoorsUse the mechanical key (→P. 4 2 )
in order to perform the following
operations (driver’s door only):
Locks all the doors
Closes the windows and 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 and moon
roof (turn and hold)
*
*: This setting must be customized at your Lexus dealer.
If communication between the electronic key and vehicle is interrupted
(→ P. 52) 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 such cases, the doors and trunk can be
opened and the hybrid system can be started by following the procedure
below.

588
6-2. Customization
HS250h_U_75050U
Wi re le ss
remote con-
trol
(
→P. 5 8 )
Wireless remote
controlOnOff———O
Unlocking oper-
ation
Driver’s
door
unlocked
in one step,
all doors
unlocked
in two
steps
All doors
unlocked
in one step
O—OO
Panic functionOnOff———O
Trunk unlocking
operationPress and
hold
(short)
One short press———O
Press twice———O
Press and
hold
(long)
———O
Off———O
Automatic
light control
system
(
→P. 1 9 1 )
Ti m e e l a p s e d
before the head-
lights turn off30 sec- onds
Off
O—OO
60 sec-
onds
90 sec- onds
Light sensor
sensitivityStandard-2 to 2O—OO
ItemFunctionDefault settingCustom-
ized
setting

591
6-2. Customization
6
Vehicle specifications
HS250h_U_75050U
Automatic
air condi-
tioning sys-
tem
(→ P. 2 6 6 )A/C Auto switch
operationAutoManualO——O
Tu r n i n g o n t h e
windshield
defogger acti-
vates the A/C
OnOff———O
Eco drive
mode
(
→P. 1 6 2 )
Heating/cooling
operation mini-
mized in Eco
drive mode
OnOff———O
Front seats
(
→P. 6 8 )
Driver’s seat
movement when
exiting the vehi-
cle (on some
models)
Pa r t i a l
Off
O—OO
Full
Eco Driving
Indicator
Light
(
→P. 1 7 7 )
Activating Eco
Driving Indica-
tor Light
OnOff—OOO
Po w e r w i n -
dows
(
→P. 9 0 )
Mechanical key
linked operationOffOn———O
Wireless remote
control linked
operation
Off
On
(Open only)
———O
Buzzer sounds if
operated using
wireless remote
OnOff———O
ItemFunctionDefault settingCustom-
ized
setting

592
6-2. Customization
HS250h_U_75050U
Moon roof
(
→P. 9 3 )
Mechanical key
linked opera-
tion*
OnOff———O
Linked operation
of components
when door key is
used
Slide onlyTilt only———O
Wireless remote
control linked
operation*On
(Open only)
Off———O
Linked operation
of components
when wireless
remote control
used
Slide onlyTilt only———O
Rear sun-
shade
(→ P. 3 9 2 )
Ti m e e l a p s e d
before the
reverse opera-
tion feature acti-
vates
0.7 sec-
onds
Off———O
0 seconds———O
0.9 sec-onds———O
1.2 sec-onds———O
Reverse opera-
tionOnOff———O
*: This function cannot be customized unless power window operation using the wireless remote control or mechanical key is enabled.
ItemFunctionDefault settingCustom-
ized
setting

614
HS250h_U_75050U
Alphabetical index
Alphabetical index
A/C*Air conditioning filter ....................... 464
Automatic air conditioning system .................................................. 266
ABS.............................................................238
AFS .............................................................. 193
Adaptive front lighting system ......... 193
Air conditioning filter .......................... 464
Air conditioning system* Air conditioning filter ....................... 464
Automatic air conditioning system .................................................. 266
Airbags Airbag operating
conditions...............................................112
Airbag precautions for your
child.......................................................... 116
Airbag warning light ........................503
Curtain shield airbag operating conditions...............................................113
Curtain shield airbag precautions .......................................... 116
Front passenger occupant classification system..........................121
General airbag pr ecautions ........... 116
Locations of airbags.......................... 109
Modification and disposal of airbags ...................................................120
Proper driving posture ............ 107, 116
Side airbag operating conditions...............................................113
Side airbag precautions .................... 116
Side and curtain shield airbags operating conditions ........................113
Side and curtain shield airbags precautions .......................................... 116
SRS airbags ........................................... 109 Alarm.......................................................... 103
Antenna .................................................... 284
Anti-lock brake system ...................... 238
Armrest ......................................................391
Audio input* .............................................321
Audio remote control switches*
Audio system*
Antenna.................................................. 284
Audio input............................................. 321
Audio visual input................................ 321
AUX port ................................................ 321
CD player ..............................................287
CD player/changer ..........................287
iPod .......................................................... 302
MP3/WMA disc............................... 295
Optimal use ........................................... 318
Portable music player ....................... 321
Radio ........................................................279
Steering wheel audio switch......... 322
USB memory ........................................ 310
Audio/video system*
Audio visual input* .................................321
Automatic air conditioning system* Air conditioning filter ....................... 464
Air conditioning system ................. 266
Automatic air conditioning
system.................................................. 266
Automatic headlight leveling
system ..................................................... 195
Automatic light control system.......... 191
AUX port* ................................................321
Auxiliary box .......................................... 384A

619
Alphabetical index
HS250h_U_75050U
Keyless entry........................................... 58
Keys.............................................................. 42
Mechanical key ......................................43
Wireless remote control key.......... 58
Lane keeping assist ............................. 230
License plate lights Replacing light bulbs .........................481
Wattage .................................................568
Light bulbs
Replacing.................................................481
Wattage .................................................568
Light Door courtesy lights .........................374
Fog light switch................................... 202
Footwell lights ......................................374
Headlight switch ....................................191
Interior light list.....................................374
Interior light switch............................ 375
Outer foot lights..................................374
Personal light switch ........................ 375
Remote touch light ............................374
Replacing light bulbs .........................481
Scuff lighting..........................................374
Turn signal lever...................................166
Turn signal light switch ..................... 166
Vanity lights ..........................................386
Wattage .................................................568
LKA ............................................................ 230
Load capacity .........................................257 Maintenance
Do-it-yourself maintenance........... 431
General maintenance .....................426
Maintenance data ............................. 560
Maintenance requirements .......... 423
Meter
Instrument panel light control....... 170
Meters....................................................... 169
Micro dust and pollen filter* ............ 270
Mirrors Inside rear view mirror ...................... 85
Side mirror heater ............................. 274
Side mirrors ............................................. 87
Vanity mirrors ..................................... 386
Moon roof................................................... 93
MP3 disc* ................................................ 295
Multi-information display .................... 177
Navigation system*
Noise from under vehicle...................... 18
Odometer................................................. 169
Oil Engine oil................................................439
Opener Fuel filler door ......................................... 97
Hood ........................................................434
Trunk ........................................................... 64
OPEN/CLOSE button*
Outer foot lights Outer foot lights ................................. 374
Wattage................................................. 568
*: For vehicles with a navigation system, refer to “Navigation System Owner’s Manual”.
L
M
N
O

620
Alphabetical index
HS250h_U_75050U
Outside rear view mirrorsAdjusting and folding ......................... 87
Driving position memory................... 72
Mirror position memory ....................72
Outside rear view mirror defogger switch* ............................... 274
Outside temperature display.............177
Overhead console ...............................384
Overheating, Engine...........................552
Overheating, Hybrid system ...........552
Parking brake ...........................................167
Parking lights Replacing light bulbs......................... 481
Switch ......................................................... 191
Wattage................................................. 568
PCS ............................................................ 245
Personal lights Personal lights ..................................... 375
Switch ...................................................... 375
Wattage................................................. 568
Power easy access system................... 69
Power outlet........................................... 388
Power switch ........................................... 152
Power windows ........................................90
Pre-collision system.............................245
Radar cruise control ............................. 216
Radiator .................................................... 444
Radio* ....................................................... 279
Radio data system* ............................... 281
RDS* ........................................................... 281
Rear side marker lights Replacing light bulbs..........................491
Wattage................................................. 568
Rear sunshade .......................................392 Rear turn signal lights
Replacing light bulbs ......................... 481
Wattage .................................................568
Rear view mirror
Compass ............................................... 404
Rear view monitor system*
Rear window defogger* .....................274
Remote Touch*
Replacing Electronic key battery ......................467
Fuses........................................................ 469
Light bulbs .............................................. 481
Tires.......................................................... 532
Reporting safety defects for
U.S. owners..........................................598
Reset the maintenance data ............ 424
Safety connect .......................................408
Scuff lighting ........................................... 374
Seat belts
Adjusting the seat belt ........................78
Automatic Locking Retractor ......... 79
Child restraint system installation ............................................ 130
Cleaning and maintaining the seat belt......................................... 421
Emergency Locking Retractor ...... 79
How to wear your seat belt ............. 77
How your child should wear the seat belt........................................... 79
Pre-collision seat belts.................... 245
Pregnant women, proper seat belt use ......................... 79
Reminder light.....................................505
Seat belt extenders.............................. 80
Seat belt pretensioners ......................78
P
R
S