2023 TOYOTA VENZA HYBRID change key battery

821-5. Theft deterrent system
If a door is unlocked using the
mechanical key while the alarm is
set, a warning will sound intermit-
tently for approximately 10 seconds.
If the alarm is not canceled or
stopped during this time, the warn-
ing pattern change s and the warn-
ing sounds for a certain period of
time.
●A person inside the vehicle opens
a door or hood, or unlocks the
vehicle using an inside lock but-
ton.
●The 12-volt battery is recharged or
replaced when the vehicle is
locked. ( P.468)
■Alarm-operated door lock
In the following cases, depending
on the situation, th e door may auto-
matically lock to p revent improper
entry into the vehicle:
●When a person remaining in the
vehicle unlocks the door and the
alarm is activated.
●While the alarm i s activated, a
person remaining in the vehicle
unlocks the door.
●When recharging or replacing the
12-volt battery.
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

1393-2. Opening, closing and locking the doors
3
Before driving
■Door lock buzzer
If an attempt to lock the doors using
the smart key system is made when
a door other than t he door you are
locking is open, a buzzer sounds
continuously for 5 seconds. Fully
close all the doors, and lock the
vehicle once more.
■Setting the alarm
Locking the doors will set the alarm
system. ( P.81)
■Conditions affecting the opera-
tion of the smart key system or
wireless remo te control
 P.156
■If the smart key system or the
wireless remote control does
not operate properly
●Use the mechanical key to lock
and unlock the doors. ( P.467)
●Replace the key battery with a
new one if it is depleted. ( P.424)
■If the 12-volt battery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the doors using the
mechanical key. ( P.467)
■Rear seat reminder function
●In order to remind you not to for-
get luggage, etc. in the rear seat,
when the power switch is turned to
OFF after any of the following con-
ditions are met, a buzzer will
sound and a message will be dis-
played on the multi-information
display for approximately 6 sec-
onds. • The hybrid system is started
within 10 minutes after opening
and closing a rear door.
• A rear door has been opened and closed after the hybrid system
was started.
However, if a rear door is opened
and then closed within approxi-
mately 2 seconds, the rear seat
reminder function may not operate.
●The rear seat reminder function
determines that luggage, etc. has
been placed in a rear seat based
on opening and closing of a rear
door. Therefore, depending on the
situation, the rear seat reminder
function may not operate and you
may still forget luggage, etc. in the
rear seat, or it may operate unnec-
essarily.
●The rear seat reminder function
can be enabled/disabled.
(  P.507)
■Customization
Settings (e.g. unlocking function
using a key) can be changed.
(Customizable features:  P.506)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle.
Failure to do so may result in a
door opening and an occupant
could be thrown out of the vehicle,
resulting in dea th or serious
injury.
●Ensure that all doors are prop-
erly closed and locked.
●Do not pull the inside handle of
the doors while driving.
Be especially careful for the
front doors, as the doors may
be opened even if the inside
lock buttons are in locked posi-
tion.

1563-2. Opening, closing and locking the doors
driver’s door handle, or use the
wireless remote control or the
mechanical key, to unlock the
doors.
■Turning an electronic key to
battery-saving mode
●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 electronic key indi-
cator flashes 4 times.
While the battery-saving mode is
set, the smart key system cannot be
used. To cancel the function, press
any of the electronic key buttons.
●Electronic keys that will not be
used for long periods of time can
be set to the battery-saving mode
in advance.
■When electronic key function
stops
If the position of the electronic key
has not changed for a certain
amount of time such as when the
electronic key is left somewhere, the
function of the electronic key stops
to reduce depletio n of the battery.
In this case, function can automati-
cally be restored by moving the
position of the key such as by lifting
it up.
■Conditions affecting operation
The smart key 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 key system, wireless remote
control and immobilizer system from
operating properly.
●When the electronic key battery is
depleted
●Near a TV tower, electric power
plant, gas station, radio station,
large display, airpo rt or other facil-
ity that generates strong radio
waves or electrical noise
●When the electronic key is in con-
tact with, or is c overed by the fol-
lowing metallic objects
• Cards to which aluminum foil is
attached
• Cigarette boxes that have alumi-
num foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless key (that
emits radio waves) is 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 electronic key or a wire- less key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint wit h a metallic con-
tent or metallic objects are
attached to the rear window
●When the electronic key is placed
near a battery charger or elec-
tronic devices
●When the vehicle is parked in a
pay parking spot where radio
waves are emitted.
If the doors cannot be
locked/unlocked using the smart key
system, lock/unlock the doors by

1573-2. Opening, closing and locking the doors
3
Before driving
performing any of the following:
●Bring the electronic key close to
either front door handle and oper-
ate the entry function.
●Operate the wireless remote con-
trol.
If the doors cannot be
locked/unlocked using the above
methods, use the mechanical key.
(  P.136)
If the hybrid system cannot be
started using the smart key system,
refer to P.467.
■Note for the entry function
●Even when the electronic key is
within the effective range (detec-
tion areas), the system may not
operate properly in the following
cases:
• The electronic key is too close to
the window or outside door han-
dle, near the ground, or in a high
place when the doors are locked
or unlocked.
• The electronic key is on the instru- ment panel, luggage cover or
floor, or in the door pockets or
glove box when the hybrid system
is started or po wer switch modes
are changed.
●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 conditions, it may
be detected by the antenna out-
side the cabin and the door 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 unl ock the vehicle.
●Even if the electronic key is not
inside the vehicle, it may be possi-
ble to start the hybrid system if the
electronic key is near the window.
●The doors may unlock 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 60 sec-
onds 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 possib ility that the door
may not be unlocked by the entry
function. (Use the wireless remote
control to unlock the doors.)
●Touching the door lock sensor
while wearing gloves may delay or
prevent lock operation. Remove
the gloves and touch the lock sen-
sor again.
●When the lock operation is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recognition signals will be
given.
●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 following correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca-
tion 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
key system. ( P.156)
●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 vehi-
cle. To turn off th e alarm, lock all
the doors.
●The lock sensor may not work
properly if it comes into contact
with ice, snow, m ud, etc. Clean

1583-2. Opening, closing and locking the doors
the lock sensor and attempt to
operate it again.
●A sudden approach to the effec-
tive range or door handle may pre-
vent the doors from being
unlocked. In this case, return the
door handle to the original position
and check that the doors unlock
before pulling the door handle
again.
●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.
■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 key system can be
deactivated in advance. ( P.508)
●Battery-saving mode can reduce
the power consumption of elec-
tronic keys. (P.156)
■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 ou tside of the vehi-
cle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention may not operate.)
■If the smart key system does
not operate properly
●Locking and unlocking the doors:
Use the mechanical key.
(  P.467)
●Starting the hybrid system:
 P.467
■Customization
Settings (e.g. smart key system)
can be changed. (Customizable features: 
P.505)
If the smart key system has been
deactivated in a customized setting,
refer to the explanations for the fol-
lowing operations.
●Locking and unlocking the doors:
Use the wireless remote control or
mechanical key. ( P.137, 467)
●Starting the hybrid system and
changing power switch modes:
P.467
●Stopping the hybrid system:
P.203
WARNING
■Caution regarding interfer-
ence with electronic devices
●People with implantable car-
diac pacemakers, cardiac
resynchronization therapy-
pacemakers or implantable car-
dioverter defibrillators should
keep away from the smart key
system antennas. ( P.154)
The radio waves may affect the
operation of such devices. If
necessary, the e ntry function
can be disabled. Ask your
Toyota dealer for details, such
as the frequency of radio waves
and timing of the emitted radio
waves. Then, consult your doc-
tor to see if you should disable
the entry function.
●User of any electrical medical
device other than implantable
cardiac pacemakers, cardiac
resynchronization therapy-
pacemakers or implantable car-
dioverter defibrillators should
consult the manufacturer of the
device for information about its
operation under the influence of
radio waves.
Radio waves could have unex-
pected effects on the operation
of such medical devices.
Ask your Toyota dealer for details
for disabling the entry function.

2024-2. Driving procedures
■When the ambient temperature
is low, such as during winter
driving conditions
●When starting the hybrid system,
the flashing time of the “READY”
indicator may be long. Leave the
vehicle as it is until the “READY”
indicator is steady on, as steady
means the vehicle is able to move.
●When the hybrid battery (traction
battery) is extremely cold (below
approximately -22°F [-30°C])
under the influence of the outside
temperature, it may not be possi-
ble to start the hybrid system. In
this case, try to start the hybrid
system again after the tempera-
ture of the hybrid battery
increases due to the outside tem-
perature increase etc.
■Sounds and vibrations specific
to a Hybrid Electric Vehicle
 P.72
■If the 12-volt battery is dis-
charged
The hybrid system cannot be
started using the smart key system.
Refer to P.468 to r estart the hybrid
system.
■Electronic key battery depletion
 P.134
■Conditions affecting operation
 P.156
■Note for the entry function
 P.157
■If there is a mal function in the
smart key system
If “Smart Key System Malfunction
See Owner’s Manual” is displayed
on the multi-informat ion display, the
system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer immediately.
■If the “READY” indicator does
not come on
In the event that the “READY” indi-
cator does not come on even after performing the proper procedures
for starting the vehicle, contact your
Toyota dealer immediately.
■When “Check Fuel Cap” is dis-
played on the multi-information
display
 P.233
■If the hybrid system is malfunc-
tioning
 P.79
■Electronic key battery
 P.424
■Operation of the power switch
●If the switch is not pressed shortly
and firmly, the power switch mode
may not change o r the hybrid sys-
tem may not start.
●If attempting to restart the hybrid
system immediately after turning
the power switch to OFF, the
hybrid system may not start in
some cases. Aft er turning the
power switch to OFF, please wait
a few seconds before restarting
the hybrid system.
■Customization
If the smart key system has been
deactivated in a customized setting,
refer to P.467.
WARNING
■When starting the hybrid sys-
tem
Always start the hybrid system
while sitting in the driver’s seat.
Do not depress t he accelerator
pedal while starting the hybrid
system under any circumstances.
Doing so may cause an accident
resulting in dea th or serious
injury.

3405-2. Using the interior lights
tronic key, whether the doors are
locked/unlocked, and whether the
doors are opened/closed.
●If the interior lights remain on
when the power switch is turned to
OFF, the lights will go off automat-
ically after 20 minutes.
■Interior lights brightness reduc-
tion
The brightness of the following
lights will be reduc ed when shifting
the shift lever to any position other
than P.
●Instrument panel lower illumina-
tion (if equipped)
●Footwell lights (if equipped)
●Upper console lights (if equipped)
●Front console light
●Inside door handle lights (if
equipped)
■The interior lights may turn on
automatically when
If any of the SRS airbags deploy
(inflate) or in the event of a strong
rear impact, the interior lights will
turn on automatically.
The interior lights will turn off auto-
matically after approximately 20
minutes.
The interior lights can be turned off
manually. However, in order to help
prevent further collisions, it is rec-
ommended that they be left on until
safety can be ensured.
(The interior lights may not turn on
automatically depending on the
force of the impact and conditions of
the collision.)
■When the illuminated entry sys-
tem do not turn on
The electronic key battery-saving
function may be activated.( P.155)
■Customization
Setting (e.g. the time elapsed before
the lights turn off) can be changed.
(Customizable features: P.513)
■Front interior lights
Vehicles without panoramic
fixed moon roof with one-
touch frosted glass control
Turns the lights on/off
The rear interior light also turns
on/off.
However, when the rear interior
light has already been turned on, it
will not be controlle d by front inte-
rior light operations.
Turns the door position on/off
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the lights on longer
than necessary when the hybrid
system is off.
Operating the interior
lights

4687-2. Steps to take in an emergency
is displayed on the multi-
information display.
4 Press the power switch
shortly and firmly.
In the event that the hybrid system
still cannot be started, contact your
Toyota dealer.
■Stopping the hybrid system
Shift the shift lever to P, set the
parking brake and press the power
switch as you no rmally do when
stopping the hybrid system.
■Replacing the key battery
As the above proc edure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediate ly when the bat-
tery is depleted. ( P.424)
■Alarm
If a door is unlocked using the
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered. ( P.81)
■Changing power switch modes
Release the brake pedal and press
the power switch in step 3 above.
The hybrid system does not start
and modes will be changed each
time the switch is pressed.
(  P.204)
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1 Vehicles with alarm: Confirm
that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and the doors locked. ( P.82)
2 Open the hood ( P.387) and
fuse box cover.
Push claw and to com-
pletely release the lock, and then lift
If the 12-volt battery is
discharged
The following procedures
may be used to start the
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your
Toyota dealer or a qualified
repair shop.
Restarting the hybrid sys-
tem
AB