2012 Lexus HS250h battery

52
1-3. Opening, closing and locking the doors
HS250h_U_75050U
●If the smart access system with push-button start has not been used for 14 days
or longer, the doors cannot be unlocked at any doors except the driver’s door.
In this case, take hold of the driver’s door handle, or use the wireless remote
control or the mechanical key, to unlock the doors.
■Conditions affecting operation
The smart access system with push-button start uses weak radio waves. In the fol-
lowing situations, the communication between the electronic key and the vehicle
may be affected, preventing the smart access system with push-button start, wire-
less remote control and immobilizer system from operating properly.
(Ways of coping: →P. 544)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility that generates strong radio waves or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wire-
less communication devices
●When the electronic key is in contact with, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless key (that emit radio waves) is being used nearby
●When carrying the electronic key together with the following devices that emit
radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or metallic objects are attached to the rear
window

55
1-3. Opening, closing and locking the doors
1
Before driving
HS250h_U_75050U
■When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not leave the electronic key within 6 ft. (2 m)
of the vehicle.
●The smart access system with push-button start can be deactivated in advance.
(→ P. 5 8 4 )
■Alarm
Using the smart access system with push-button start to lock the doors will set the
alarm system. ( →P. 1 0 3 )
■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, unlocking the trunk: Use the mechanical key.
(→ P. 5 4 4 )
●Starting the hybrid system: →P. 5 4 5
■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. 5 2 4 )
●As the electronic key always receives 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 6 7 )
• 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.

56
1-3. Opening, closing and locking the doors
HS250h_U_75050U
●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 6 7
■Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features →P. 5 8 4 )
■Certification for the smart access system with push-button start
For vehicles sold in the U.S.A.
FCC ID: HYQ14ACX FCC ID: HYQ14ADF
FCC ID: HYQ14AEB FCC ID: HYQ14AEF
FCC ID: HYQ13CZK FCC ID: HYQ13CZL
FCC ID: NI4TMLF8-13
NOTE:
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

59
1-3. Opening, closing and locking the doors
1
Before driving
HS250h_U_75050U
■Pa n i c m o d e
■Security feature
→P. 5 1
■Alarm
Using the wireless remote control to lock the doors will set the alarm system.
(→ P. 1 0 3 )
■Conditions affecting operation
→P. 5 2
■If the wireless remote control does not operate properly
Locking and unlocking the doors, unlocking the trunk: Use the mechanical key.
(→ P. 5 4 4 )
■Electric key battery depletion
→P. 5 5
■When the electric key battery is fully depleted
→P. 4 6 7
■Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features →P. 5 8 4 ) 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.

92
1-5. Opening and closing the windows and moon roof
HS250h_U_75050U
■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key. *
(→ P. 5 4 4 )
●The power windows can be opened using the wireless remote control. *
(→ P. 5 8 )
*: 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 8 4 )
CAUTION
■Closing the windows
Observe the following precautions.
Failing to do so may result in death or serious injury.
●Check to make sure that all passengers do not have any part of their body in a
position where it could be caught when a window is being operated.
●Do not allow children to operate the power windows.
Closing a power window on someone can cause serious injury, and in some
instances, even death.
●To prevent inadvertent power windows operation, never let a small child have and
use the wireless remote control. ( →P. 5 8 )
Closing a power window on someone can cause serious injury, and in some
instances, even death.
■Jam protection function
●Never use any part of your body to intentionally activate the jam protection func-
tion.
●The jam protection function may not work if something gets caught just before
the window fully closes.

105
1-7. Theft deterrent system
1
Before driving
HS250h_U_75050U
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■When the 12-volt battery is disconnected
Be sure to cancel the alarm system.
If the 12-volt battery is disconnected before canceling the alarm, the system may be
triggered when the battery is reconnected.
■Alarm-operated door lock
●When the alarm is operating, the doors are locked automatically to prevent
intruders.
●Do not leave the key inside the vehicle when the alarm is operating, and make
sure the key is not inside the vehicle when recharging or replacing the 12-volt
battery.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation
of the system cannot be guaranteed.
●A person inside the vehicle opens a door,
the trunk or hood.
●The 12-volt battery is recharged or
replaced when the vehicle is locked.

144
2-1. Driving procedures
HS250h_U_75050U
■For efficient use
●Select the D position when driving.
In the N position, the gasoline engine operates but electricity cannot be gener-
ated. The hybrid battery (traction battery) will discharge, requiring unnecessary
engine power to recharge.
●Drive your vehicle smoothly.
Avoid abrupt acceleration and deceleration. Gradual acceleration and decel-
eration will make more effective use of the electric motor (traction motor) with-
out having to use gasoline engine power.
●Avoid repeated acceleration.
Repeated acceleration consumes hybrid battery (traction battery) power,
resulting in poor acceleration. Battery power can be restored by driving with
the accelerator pedal slightly released.
●Select the P position when parking.
In the N position, the hybrid battery (traction battery) does not recharge.
Leaving the N position selected for an extended period of time may discharge
the hybrid battery. The vehicle cannot run if the hybrid battery is discharged.
■Eco-friendly driving
■Customization
Settings for Eco Driving Indicator Light can be changed.
(Customizable features →P. 5 8 4 ) During Eco-friendly acceleration (Eco driv-
ing), Eco Driving Indicator Light will turn on.
When the accelerator pedal is depressed
excessively, and when the vehicle is stopped,
the light turns off.
Eco Driving Indicator Light will not operate in
the following conditions:
●The shift position is anything other than D.
●The driving mode is set to power mode or
EV drive mode. (
→P. 1 5 7 ,
162)
●The vehicle speed is approximately 80
mph (130 km/h) or higher.

151
2-1. Driving procedures
2
When driving
HS250h_U_75050U
NOTICE
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the
following serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following:
●Brake function
●Changes in quantity and quality of engine oil, transaxle fluid for the hybrid system
etc.
●Lubricant condition for the bearings and suspension joints (where possible), and
the function of all joints, bearings, etc.
As flooding may damage components involved in P position control, the parking
lock may jam in the locked position.
■If the vehicle will not shift out of the P position
There is a possibility that the 12-volt battery is discharged. Check the 12-volt battery
in this situation.