2010 Lexus HS250h smart key

52
1-3. Opening, closing and locking the doors
■To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get the
electronic key too close to the vehicle when operating the system from the outside
of the vehicle.
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, unlockin g 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.)
●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-bu tton 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 7 2 )

434
4-3. Do-it-yourself maintenance
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable
and
explosive. Therefore, observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to discon -
nect the ground cable.
●Make sure the power switch on the charger is off when connecting and discon -
necting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery
●Unlocking the doors using the smart ke y system may not be possible immedi-
ately after disconnecting the 12
-volt battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the “P OWER” switch in ACCESSORY mode. The
hybrid system may not start with the “POWER” switch turned OFF. However,
the hybrid system will operate normally from the second attempt.
●The “POWER” switch mode is recorded by the vehicle. If the battery is recon -
nected, the vehicle will return the “POWER” switch mode to the status it was in
be
fore the battery was disconnected. Make sure to turn off the power before
disconnect the battery. Take extra care when connecting the battery if the
“POWER” switch mode prior to discharge is unknown.
If the system will not start even after mult i
ple attempts, contact your Lexus dealer.
■Exterior
Make sure that the 12-volt ba ttery terminals are not corroded and
that there are no loose connect ions, cracks or loose clamps.
Terminals
Hold-down clamp

454
4-3. Do-it-yourself maintenance
■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
ca
n 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.
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 comp onents inside the remote control.
●Do not bend either of the battery terminals.

5
When trouble arises
515
5-2. Steps to take in an emergency
Con-
tinuousCon-
tinuous
(Displayed alternately)(Flashes)
The electronic key
was carried out-
side the vehicle
and the driver’s
door was opened
and closed while
any shift position
other than P was
selected without
turning off the
“POWER” switch.
• Change the shift position to P.
• Bring the elec- tronic key back
into the vehicle.
OnceCon-
tinuous
(Flashes)
An attempt was
made to lock the
doors using the
smart access sys-
tem with push-
button start while
the electronic key
was still inside the
vehicle.
Retrieve the elec-
tronic key from
the vehicle and
lock the doors
again.
Interior buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

5
When trouble arises
533
5-2. Steps to take in an emergency
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked functions
Doors
Use the mechanical key (P
. 39)
in order to perform the following
oper
ations (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 electron ic key and vehicle is interrupted
( 
P. 4 9 ) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
r
emote 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.

5
When trouble arises
535
5-2. Steps to take in an emergency
To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“P
OWER” switch. Modes can be changed each time the switch is
pressed. ( P. 1 4 8 )
To start the hybrid system: Press the “POWER” switch within 10
seconds of the buzz
er sounding, keeping the brake pedal
depressed.
In the event that the hybrid system still cannot be oper
ated, 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 wi th
push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on. 
(Customizable features  P. 5 7 2)

577
6-2. Customization
6
Vehicle specifications
Illumination
(
P. 3 6 0 )
Ti m e e l a p s e d
before the inte-
rior lights turn off
15 seconds
Off
O—OO
7. 5 s e c - onds
30 sec- onds
Operation after
the “POWER”
switch is turned
off
OnOff———O
Operation when
the doors are
unlocked
OnOff———O
Activate on
approach of per-
son carrying
smart key
OnOff———O
Ti m e e l a p s e d
before the exte-
rior lights turn off
15 seconds
Off
O—OO
7. 5 s e c -onds
30 sec- onds
Footwell lightingOnOff———O
*: Vehicles sold outside Canada
ItemFunctionDefault settingCustom- ized
setting

578
6-2. Customization
Illumination
(
P. 3 6 0 )
Outer foot lights
activate on
approach of per-
son carrying
smart key
OnOff———O
Outer foot lights
operation when
the doors are
unlocked
OnOff———O
Remote touch
lightOnOff———O
Meter 
(  P. 1 6 2 )
Sensitivity of the
ambient light
sensor used for
dimming the
meter lights etc.
Standard-2 to 2O——O
Sensitivity of the
ambient light
sensor used for
brightening the
meter lights etc.
Standard-2 to 2O——O
Automatic
air condi-
tioning sys-
tem 
( P. 252)
Switching
between outside
air and recircu-
lated air mode
linked to
“AUTO” switch
operation
AutoManualO——O
ItemFunctionDefault
settingCustom- ized
setting