2016 LEXUS NX200T battery

1113-1. Key information
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Operation of each component
NX200t_OM_USA_OM78081U
■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 so und in the cabin when the engine stops.
(  P. 5 1 8 )
●As the electronic key always receives ra dio waves, the battery will become depleted
even if the electronic key is not used. The following symptoms indicate that the elec-
tronic key battery may be depleted. Replace the battery when necessary. ( P. 5 1 8 )
• The smart access system with push-button start 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 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
• Induction cookers
• Table lamps
■Replacing the battery
 P. 5 1 8
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask your Lexus
dealer for details.
■If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.

1133-1. Key information
3
Operation of each component
NX200t_OM_USA_OM78081U
NOTICE
■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 and the card key
may stop working.
If the key is dropped into water, or if drinkin g water, etc., is spilled on the key, immedi-
ately remove the battery cover and wipe the battery and terminals. (To remove the
battery cover, lightly grasp and pull it.) If the battery is corroded, have your Lexus
dealer 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 battery.
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 follow-
ing 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.

1153-2. Opening, closing and locking the doors
3
Operation of each component
NX200t_OM_USA_OM78081U
■Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate that the doors have been
locked/unlocked. (Locked: Once; Unlocked: Twice)
Windows:
A buzzer sounds to indicate that all windows are opening.
■Security feature
If a door is not opened within approximately 60 seconds after the vehicle is unlocked, the
security feature automatically locks the vehicle again.
■Welcome light illumination control
The side marker, parking, tail and license plat e lights automatically turn on at night when
the doors are unlocked using the entry functi on 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 surface of the door handle
■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
Locking the doors will set the alarm system. ( P. 77)
■If the smart access system with push-butto n start or the wireless remote control does
not operate properly
●Use the mechanical key to lock and unlock the doors. ( P. 5 76 )
●Replace the key battery with a new one if it is depleted. ( P. 5 1 8 )
When the door can not be locked even if the
lock sensor on the surfac
e of the door handle is
touched by a finger, touch the lock sensor with
the palm.
When gloves are being worn, remove the
gloves.

1253-2. Opening, closing and locking the doors
3
Operation of each component
NX200t_OM_USA_OM78081U
■Back door closer (vehicles with a power back door)
In the event that the back door is left slight ly open, the back door closer will automatically
close it to the fully closed position.
Whatever the state of the engine switch, the back door closer operates.
■Operation of the power back door (vehicles with a power back door)
●A buzzer sounds and the emergency flashers flash twice to indicate that the back door
is opening/closing.
●When the power back door operations are OFF, the power back door does not oper-
ate but it can be opened and closed by hand.
●When the power back door automatically op ens, if an abnormality due to people or
objects is detected, operation will stop.
■Back door reserve lock function (vehicles with a power back door)
This function is a function which reserves locking of all doors, beforehand, when the back
door is open. When the follow is done, all th e doors except the back door are locked and
then back door will also be locked at the same time it is closed.
Close all doors, except the back door.
Push the wireless lock button during the au tomatic closing operation of the back door.
■When reconnecting the battery (vehicles with a power back door)
To enable the power back door to operate properly, close the back door manually.
■Jam protection function (vehicles with a power back door)
■Returning the back door automatic stop position to the initial settings (vehicles with a
power back door)
■Customization (vehicles with a power back door)
Settings (e.g. back door automatic open and stop position) can be changed.
(Customizable features: P. 6 1 4 )
Sensors are installed in th
e right and left sides of
the power back door. When the door is auto-
matically closing and the sensors are pushed
due to an object being clamped, etc., the jam
protection function operates.
From that position the door automatically
moves a little in the opposite direction and then
the function stops.
Press and hold the power back door switch on
the back door for 7 seconds.
After the buzzer sounds 4 times, it sounds
twice more. When the power back door does
the opening operation the next time, the door
will open to the init ial settings position.
1
2

1283-2. Opening, closing and locking the doors
NX200t_OM_USA_OM78081U
WA R N I N G
■Back door closer (vehicles with a power back door)
●Use caution when using the back door closer as it still operates when the power back
door system is canceled.
■Power back door (if equipped)
Observe the following precautions when operating the power back door.
Failure to do so may cause death or serious injury.
●Check the safety of the surrounding area to make sure there are no obstacles or any-
thing 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 back
door is about to open or close.
●If the power back door system is canceled while the back door is operating during
automatic operation, the back door stops operating. Take extra care when on an
incline, as the back door may open or close suddenly.
●If the operating conditions of the power back door are no longer met, a buzzer may
sound and the back door may stop opening or closing. The back door then has to be
operated manually. Take extra care in this situation, as the back door may move
abruptly.
●On an incline, the back door may sudden ly shut after it opens automatically. Make
sure the back door is secured.
●In the following situations, the power back door may detect an abnormality and auto-
matic operation may be stopped. In this case, the back door has to be operated man-
ually. Take extra care in this situation, as the stopped back door may suddenly open or
close, causing an accident.
• When the back door contacts an obstacle
• When the battery voltage suddenly drops, such as when the engine switch is turned to IGNITION ON mode or the engine is started during automatic opera-
tion
●In the event that the back door is left slightly
open, the back door closer will automatically
close it to the fully closed position. It takes
several seconds before the back door closer
begins to operate. Be careful not to get fin-
gers caught or anything else in the back door,
as this may cause bone fractures or other
serious injuries.

1323-2. Opening, closing and locking the doors
NX200t_OM_USA_OM78081U
■Alarms and warning messages
A combination of exterior and interior alarms as well as warning messages shown on the
multi-information display are used to prevent theft of the vehicle and accidents resulting
from erroneous operation. Take appropriate measures in response to any warning mes-
sage on the multi-information display. ( P. 5 5 7 )
The following table describes circumstance s and correction procedures when only
alarms are sounded.
■When “Smart Access System Malfunction See Owner’s Manual” will be displayed on
the multi-inform ation display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■Battery-saving function
The battery-saving function will be activated in order to prevent the electronic key bat-
tery and the battery from being discharged wh ile the vehicle is not in operation for a long
time.
●In the following situations, the smart access system with push-button start may take
some time to unlock the doors.
• The electronic key has been left in an area of approximately 6 ft. (2 m) of the outside
of the vehicle for 10 minutes or longer.
• The smart access system with push-butto n start has not been used for 5 days or
longer.
●If the smart access system with push-butto n 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 us e the wireless remote control or the mechan-
ical key, to unlock the doors.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 5
secondsAn attempt was made to lock
the vehicle while a door was
open.Close all of the doors and
lock the doors again.
Interior alarm pings
repeatedly
The engine switch was turned to
ACCESSORY mode while the
driver’s door was open (The
driver’s door was opened when
the engine switch was in
ACCESSORY mode).
Turn the engine switch off
and close the driver’s door.

1333-2. Opening, closing and locking the doors
3
Operation of each component
NX200t_OM_USA_OM78081U
■Electronic Key battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from receiving radio waves.
■Conditions affecting operation
The smart access system with push-button star t, wireless remote control and immobilizer
system use weak radio waves. In the followi ng situations, the communication between the
electronic key and the vehicle may be affected, preventing the smart access system with
push-button start, wireless remote control and immobilizer system from operating prop-
erly. (Ways of coping: P. 5 76 )
●When the electronic key battery is depleted
●Near a TV tower, electric powe r plant, gas station, radio station, large display, airport or
other facility that generates strong radio waves or electrical noise
●When the electronic key is in contact wi th, 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
• Portable radio, cellular phone, cordless phone or other wireless communication
devices
• 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 me tallic objects are attached to the rear win-
dow
●When the electronic key is placed near a battery charger or electronic devices
Press twice while pressing and holding .
Confirm that the electronic key indicator flashes
4 times.
While the battery-saving mode is set, the smart
access system with push-button start cannot be
used. To cancel the function, press any of the
electronic key buttons.

1343-2. Opening, closing and locking the doors
NX200t_OM_USA_OM78081U
■Note for the entry function
●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 back door is opened.
• The electronic key is on the instrument panel, luggage room, floor, or in the door
pockets or glove box when the engine is started or engine switch modes are
changed.
●Do not leave the electronic key on top of th e instrument panel or near the door pockets
when exiting the vehicle. Depending on the radio wave reception conditions, it may be
detected by the antenna outs ide the cabin and the door will become lockable from the
outside, possibly trapping the el ectronic key inside the vehicle.
●As long as the electronic key is within the effective range, the doors may be locked or
unlocked by anyone.
●Even if the electronic key is not inside the vehicle, it may be possible to start the engine
if the electronic key is near the window.
●The doors may unlock if a large amount of wa ter 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 door
will automatically be locked after approximately 60 seconds if the doors are not
opened and closed.)
●If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the door may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock sensor while wearin g gloves may delay or prevent lock opera-
tion. Remove the gloves and touch the lock sensor again.
●When the lock operation is performed using the lock sensor, recognition signals will be
shown up to two consecutive times. After th is, no recognition signals will be given.
●If the door handle becomes wet while the el ectronic key is within the effective 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 6 ft. (2 m) 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 access system with push-button start. ( P. 1 3 3 )
●If the electronic key is insi de the vehicle and a door handle becomes wet during a car
wash, a message may be shown on the mult i-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.