2013 Lexus IS300h Smart key battery

1333-1. Key information
3
Operation of each component
IS300h_EE(OM53B95E)
When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any
buttons on the electronic key while inside the aircraft cabin. If you are carrying
an electronic key in your bag etc., ensure that the buttons are not likely to be
pressed accidentally. Pressing a button may cause the electronic key to emit radio
waves that could interfere with the operation of the aircraft.
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
system is stopped. (P. 527)
As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery when
necessary. (P. 472)
• The smart entry & start system or the wireless remote control does not oper-
ate.
• 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 1 m (3 ft.)
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
• Table lamps
• Induction cookers
Replacing the battery
P. 472
Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask any
authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional for details.
If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.

1373-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS300h_EE(OM53B95E)
Operation signals
The emergency flashers flash to indicate that the doors have been locked/
unlocked. (Locked: once; Unlocked: twice)
A buzzer sounds to indicate that the windows and moon roof are operating.
Security feature
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
Welcome light illumination control
The front position, tail and license plate lights automatically turn on at night
when the doors are unlocked using the entry function or wireless remote control
if the light switch is in the “AUTO” position.
When the door cannot be locked by the lock sensor on the upper part of the door
handle (vehicles with entry function)
Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer
sounds continuously for 5 seconds. Fully close the door to stop the buzzer, and
lock the vehicle once more.
Setting the alarm (if equipped)
Locking the doors will set the alarm system. (P. 96)
If the smart entry & start system or the wireless remote control does not operate
properly
Use the mechanical key to lock and unlock the doors. (P. 548)
Replace the key battery with a new one if it is depleted. (P. 472) If the door will not lock even when the top-
side sensor area is touched, try touching
both the topside and underside sensor areas
at the same time.

1463-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53B95E)
Trunk light (if equipped)
The trunk light turns on when the trunk is opened.
Function to prevent the trunk being locked with the electronic key inside
When all doors are locked, closing the trunk lid with the electronic key left
inside the trunk will sound an alarm.
In this case, the trunk lid can be opened pressing the trunk release button on the
trunk lid.
If the spare electronic key is put in the trunk with all the doors locked, the key
confinement prevention function is activated so the trunk can be opened. In
order to prevent theft, take all electronic keys with you when leaving the vehi-
cle.
If the electronic key is put in the trunk with all the doors locked, the key may
not be detected depending on the location of the key and the surrounding radio
wave conditions. In this case, the key confinement prevention function cannot
be activated, causing the doors to lock when the trunk is closed. Make sure to
check where the key is before closing the trunk.
The key confinement prevention function cannot be activated if any one of the
doors is unlocked. In this case, open the trunk using the trunk opener.
Using the mechanical key
The trunk can be also opened using the mechanical key. (P. 548)
If the smart entry & start system or the wireless remote control does not operate
properly
Use the mechanical key to unlock the trunk. (P. 548)
Replace the key battery with a new one if it is depleted. (P. 472)
When leaving a key to the vehicle with a parking attendant
P. 132
Customization
The trunk unlocking operation can be changed. (Customizable features: P.
575)

1503-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53B95E)
Battery-saving function (vehicles with entry function)
The battery-saving function will be activated in order to prevent the electronic
key battery and the 12-volt battery from being discharged while the vehicle is not
in operation for a long time.
In the following situations, the smart entry & start system may take some time
to unlock the doors.
• The electronic key has been left within approximately 2 m (6 ft.) of the out-
side of the vehicle for 10 minutes or longer.
• The smart entry & start system has not been used for 5 days or longer.
If the smart entry & start system has not been used for 14 days or longer, the
doors cannot be unlocked at any door except the driver’s door. In this case, hold
the driver’s door handle, or use the wireless remote control or mechanical key,
to unlock the doors.
Electronic Key battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the
electronic key from receiving radio waves.
Press twice while pressing and hold-
ing . Confirm that the electronic key
indicator flashes 4 times.
While the battery-saving mode is set, the
smart entry & start system cannot be used.
To cancel the function, press any of the
electronic key buttons.

1513-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS300h_EE(OM53B95E)
Conditions affecting operation
The smart entry & start system uses weak radio waves. In the following situa-
tions, the communication between the electronic key and the vehicle may be
affected, preventing the smart entry & start system, wireless remote control and
immobilizer system from operating properly. (Ways of coping: P. 548)
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 device
When the electronic key is in contact with, or is covered by the following
metallic 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 keys (that emit radio waves) are 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

1523-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53B95E)
Note for the entry function (if equipped)
Even when the electronic key is within the effective range (detection areas), the
system may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near
the ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the
rear bumper center when the trunk is opened.
Do not leave the electronic key on top of the instrument panel or near the door
pockets when exiting the vehicle. Depending on the radio wave reception con-
ditions, it may be detected by the antenna outside the cabin and the doors will
become lockable from the outside, possibly trapping the electronic key inside
the vehicle.
As long as the electronic key is within the effective range, the doors may be
locked or unlocked by anyone. However, only the doors detecting the electronic
key can be used to unlock the vehicle.
The doors may unlock or lock if a large amount of water splashes on the door
handle, such as in the rain or in a car wash, when the electronic key is within the
effective range. (The doors will automatically be locked after approximately 30
seconds if the doors are not opened and closed.)
If the wireless remote control is used to lock the doors when the electronic key
is near the vehicle, there is a possibility that the door may not be unlocked by
the entry function. (Use the wireless remote control to unlock the doors.)
Touching the door lock or unlock sensor while wearing gloves may prevent
lock or unlock operation.
If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. In this case, follow the follow-
ing correction procedures to wash the vehicle:
• Place the electronic key in a location 2 m (6 ft.) or more away from the vehi-
cle. (Take care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the smart entry &
start system. (P. 150)
If the electronic key is inside the vehicle and a door handle becomes wet during
a car wash, a message may be shown on the multi-information display and a
buzzer will sound outside the vehicle. To turn off the alarm, lock all the doors.
The lock sensor may not work properly if it comes into contact with ice, snow,
mud, etc. Clean the lock sensor and attempt to operate it again, or use the lock
sensor on the lower part of the door handle.
A sudden handle operation or a handle operation immediately after entering the
effective range may prevent the doors from being unlocked. Touch the door
unlock sensor and check that the doors are unlocked before pulling the door
handle again.
Unlocking the vehicle may take more time if another electronic key is within
the effective range.

2124-2. Driving procedures
IS300h_EE(OM53B95E)
Steering lock
After turning the power switch off and opening and closing the doors, the steer-
ing wheel will be locked due to the steering lock function. Operating the power
switch again automatically cancels the steering lock.
When the steering lock cannot be released
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may
be suspended if the hybrid system is turned on and off repeatedly in a short
period of time. In this case, refrain from operating the hybrid system. After about
10 seconds, the steering lock motor will resume functioning.
When “Check Entry & Start System” is displayed on the multi-information dis-
play
The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional immediately.
If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the power switch
with the shift lever in P and the brake pedal depressed, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional
immediately.
If the hybrid system is malfunctioning
P. 516
If the electronic key battery is depleted
P. 545
Operation of the power switch
When operating the power switch, one short, firm press is enough. If the switch
is pressed improperly, the hybrid system may not start or the power switch
mode may not change. It is not necessary to press and hold the switch.
If attempting to restart the hybrid system immediately after turning the power
switch off, the hybrid system may not start in some cases. After turning the
power switch off, please wait a few seconds before restarting the hybrid system.
If the smart entry & start system has been deactivated by a customized setting
P. 548 “Steering Lock active” will be displayed on
the multi-information display.
Check that the shift lever is in P. Press the
power switch while turning the steering
wheel left and right.

426
IS300h_EE(OM53B95E)7-1. Maintenance and care
Working from top to bottom, liberally apply water to the vehicle body,
wheel wells and underside of the vehicle to remove any dirt and dust.
Wash the vehicle body using a sponge or soft cloth, such as a chamois.
For hard-to-remove marks, use car wash soap and rinse thoroughly
with water.
Wipe away any water.
Wax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle body is
cool.
Automatic car washes
Fold the mirrors before washing the vehicle. Start washing from the front of the
vehicle. Make sure to extend the mirrors before driving.
Brushes used in automatic car washes may scratch the vehicle surface and harm
your vehicle’s paint.
High pressure car washes
Do not allow the nozzles of the car wash to come within close proximity of the
windows.
Before using the car wash, check that the fuel filler door on your vehicle is
closed properly.
When using a car wash (vehicles with entry function)
If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. In that case, follow the follow-
ing correction procedures to wash the vehicle:
Place the key in a position 2 m (6 ft.) or more separate from the vehicle while
the vehicle is being washed. (Take care to ensure that the key is not stolen.)
Set the electronic key to battery-saving mode to disable the smart entry & start
system. (P. 150)
Cleaning and protecting the vehicle exterior
Perform the following to protect the vehicle and maintain it in prime con-
dition: