2013 Lexus GS300h battery

1403-1. Key Information
GS450h_300h_OM_OM30D53E_(EE)
Card key (if equipped)
The card key is not waterproof.
The mechanical key that is stored inside the card key should be used only if
a problem arises, such as when the card key does not operate properly.
If it is difficult to take out the mechanical key, push down the lock release
button using a pen tip etc. If it is still difficult to pull it out, use a coin etc.
When required to leave the vehicle’s key with a parking attendant
Turn the trunk opener main switch off and lock the glove box as circum-
stances demand. (P. 188, 689)
Remove the mechanical key for your own use and provide the attendant with
the electronic key only.
If you lose your mechanical keys
New genuine mechanical keys can be made by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional using the
other mechanical key and the key number stamped on your key number plate.
Keep the plate in a safe place such as your wallet, not in the vehicle.
To store the mechanical key in the card
key, insert it while pressing the lock
release button.
If the battery cover is not installed and
the battery falls out or if the battery was
removed because the key got wet, rein-
stall the battery with the positive termi-
nal facing the Lexus emblem.

1423-1. Key Information
GS450h_300h_OM_OM30D53E_(EE)
NOTICE
When an electronic key is lost
If the electronic key remains lost, the risk of vehicle theft increases signifi-
cantly. Visit any authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional immediately with all remaining electronic
keys and the card key that was provided with your vehicle.
Handling the card key
Do not apply excess force when inserting the mechanical key into the card
key. Doing so may damage the card key.
If the battery or card key terminals get wet, the battery may corrode.
If the key is dropped into water, or if drinking water etc. is spilled on the
key, immediately remove the battery cover and wipe the battery and ter-
minals. (To remove the battery cover, lightly grasp and pull it.) If the bat-
tery is corroded, have any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional replace the battery.
Do not crush the battery cover or use a screwdriver to remove the battery
cover. Forcibly removing the battery cover may bend or damage the key.
If the battery cover is frequently removed, the battery cover may become
loose.
When installing the battery, make sure to check the direction of the bat-
tery.
Installing the battery in the wrong direction may cause the battery to
deplete rapidly.
The surface of the card key may be damaged, or its coating may peel off
in the following situations:
• The card key is carried together with hard objects, such as coins and
keys.
• The card key is scraped with a sharp object, such as the tip of a
mechanical pencil.
• The surface of the card key is wiped with thinner or benzene.

1493-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS450h_300h_OM_OM30D53E_(EE)
Battery-saving function (vehicles with entry function)
The battery-saving function will be activated in order to prevent the elec-
tronic 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 in an area of approximately 2 m (6 ft.) of
the outside 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 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.
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
holding . Confirm that the elec-
tronic 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.

1503-2. Opening, closing and locking the doors and trunk
GS450h_300h_OM_OM30D53E_(EE)
Conditions affecting operation
The smart entry & start system uses weak radio waves. In the following situ-
ations, 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. 908)
When the electronic key battery is depleted
Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
When carrying a portable radio, cellular phone, cordless phone or other
wireless 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
GS450h_300h_OM_OM30D53E_(EE)
Note for locking the doors (vehicles with entry function)
Touching the door lock sensor while wearing gloves may delay or prevent
lock operation. Remove the gloves and touch the lock sensor again.
If the door handle becomes wet while the electronic key is within the effec-
tive range, the door may lock and unlock repeatedly. In that case, follow the
following correction procedures to wash the vehicle:
• Place the electronic key in a location 2 m (6 ft.) or more away from the
vehicle. (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. 149)
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 dis-
play 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.
Fingernails may scrape against the door during operation of the door han-
dle. Be careful not to injure fingernails or damage the surface of the door.
Note for the unlocking function (vehicles with entry function)
A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the origi-
nal position and check that the doors unlock before pulling the door handle
again.
Gripping the door handle when wearing a glove may not unlock the door.
If the door handle becomes wet while the electronic key is within the effec-
tive range, the door may lock and unlock repeatedly. In that case, follow the
following correction procedures to wash the vehicle:
• Place the electronic key in a location 2 m (6 ft.) or more away from the
vehicle. (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. 149)
If there is another electronic key in the detection area, it may take slightly
longer to unlock the doors after the door handle is gripped.
Fingernails may scrape against the door during operation of the door han-
dle. Be careful not to injure fingernails or damage the surface of the door.

1543-2. Opening, closing and locking the doors and trunk
GS450h_300h_OM_OM30D53E_(EE)
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 stops. (P. 867)
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 necessary. (P. 777)
• The smart entry & start system or the wireless remote control 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 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
When the electronic key battery is fully depleted
P. 7 7 7
Customization
Settings (e. g. smart entry & start system) can be changed.
(Customizable features: P. 942)
If the smart entry & start system has been deactivated in a customized setting
Locking and unlocking the doors and opening the trunk:
Use the wireless remote control or mechanical key. (P. 168, 908)
Starting the hybrid system and changing power switch modes:P. 9 0 9
Stopping the hybrid system: P. 2 4 7

1693-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS450h_300h_OM_OM30D53E_(EE)
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.
Security feature
P. 1 4 3
Alarm (if equipped)
Using the wireless remote control to lock the doors will set the alarm system.
(P. 97)
Conditions affecting operation
P. 1 5 0
If the wireless remote control does not operate properly
Locking and unlocking the doors and opening the trunk: Use the mechanical
key.
(P. 908)
Electronic key battery depletion
P. 1 5 4
When the electronic key battery is fully depleted
P. 7 7 7
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 professional for details.
Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: P. 942)

1923-2. Opening, closing and locking the doors and trunk
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
Trunk easy closer (vehicles with power trunk lid)
Power trunk lid (if equipped)
Observe the following precautions when operating the power trunk lid.
Failure to do so may cause serious injury.
Check the safety of the surrounding area to make sure there are no obsta-
cles or anything that could cause any of your belongings to get caught.
If anyone is in the vicinity, make sure they are safe and let them know that
the trunk is about to open or close.
If the trunk closer switch is pressed while the trunk lid is opening during
automatic operation, the trunk lid stops opening. Take extra care when on
an incline, as the trunk lid may open or close suddenly.
On an incline, the trunk lid may suddenly shut after it opens automatically.
Make sure the trunk lid is fully open and secure before using the trunk.
In the following situations, the power trunk lid may detect an abnormality
and automatic operation may be stopped. In this case, the trunk lid has to
be operated manually. Take extra care in this situation, as the stopped
trunk lid may suddenly shut, causing an accident.
• When the trunk lid contacts an obstacle
• When the 12-volt battery voltage suddenly drops, such as when the
power switch is turned to ON mode or the hybrid system is started
during automatic operation
Do not attach any accessories other than genuine Lexus parts to the trunk
lid. The power trunk lid may not operate, causing itself to malfunction, or
the trunk lid may suddenly shut again after it is opened.
In the event that the trunk lid is left
slightly open, the trunk easy closer will
automatically close it to the fully closed
position. It takes several seconds before
the trunk easy closer begins to operate.
Be careful not to catch fingers or any-
thing else in the trunk lid, as this may
cause bone fractures or other serious