2022 TOYOTA VENZA HYBRID battery

4226-3. Do-it-yourself maintenance
■If the electronic key battery is
depleted
The following symptoms may occur:
●The smart key system and wire-
less remote control will not func-
tion properly.
●The operational range will be
reduced.
Prepare the following before
replacing the battery:
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2450
■Use a CR2450 lithium battery
●Batteries can be purchased at
your Toyota dealer, local electrical
appliance shops or camera stores.
●Replace only with the same or
equivalent type recommended by
the manufacturer.
●Dispose of used batteries accord-
ing to the local laws.
NOTICE
■To prevent damage
●Be careful not to damage the
claws when replacing the wiper
insert.
●After the wiper blade is removed
from the wiper arm, place a
cloth, etc., between the rear
window and wiper arm to pre-
vent damage to the rear win-
dow.
●Be sure not to pull excessively
on the wiper insert or deform its
metal plates.
Electronic key battery
Replace the battery with a
new one if it is depleted.
Items to prepare

4236-3. Do-it-yourself maintenance
6
Maintenance and care
1Release the lock and remove
the mechanical key.
2 Remove the key cover.
To prevent damag e to the key,
cover the tip of the flathead screw-
driver with a rag.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the elec-
tronic key module may stick to the
cover and the battery may not be
visible. In this case, remove the
electronic key module in order to
remove the battery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” ter- minal facing up.
4
When installing, reverse the
steps listed.
Replacing the battery
WARNING
■Battery precautions
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
●Do not swallow the battery.
Doing so may cause chemical
burns.
●A coin battery or button battery
is used in the electronic key. If a
battery is swa llowed, it may
cause severe chemical burns in
as little as 2 hours and may
result in death or serious injury.
●Keep away new and removed
batteries from children.
●If the cover cannot be firmly
closed, stop using the electronic
key and stow the key in the
place where children cannot
reach, and then contact your
Toyota dealer.
●If you accidentally swallow a
battery or put a battery into a
part of your b ody, get emer-
gency medical attention imme-
diately.

4246-3. Do-it-yourself maintenance
1Turn the power switch off.
2 Open the fuse box cover.
Engine compartment: Type A
fuse box
Push claw and to com-
pletely release the lock, and then lift
up the cover.
Engine compartment: Type B
fuse box
Push claw and to com-
pletely release the lock, and then lift
up the cover.
WARNING
■To prevent battery explosion
or leakage of flammable liq-
uid or gas
●Replace the battery with a new
battery of the same type. If a
wrong type of battery is used, it
may explode.
●Do not expose batteries to
extremely low pressure due to
high altitude or extremely high
temperatures.
●Do not burn, bre ak or cut a bat-
tery.
NOTICE
■When replacing the battery
Use a flathead screwdriver of
appropriate size. Applying exces-
sive force may deform or damage
the cover.
■For normal operation after
replacing the battery
Observe the following precautions
to prevent accidents:
●Always work with dry hands.
Moisture may cau se the battery
to rust.
●Do not touch or move any other
component inside the remote
control.
●Do not bend either of the battery
terminals.
Checking and replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses
AB
AB

4256-3. Do-it-yourself maintenance
6
Maintenance and care
Left side instrument panel
Remove the lid.
Right side luggage compart-
ment
Open the deck board. (P.340)
Disengage the 3 claws and pull the
deck side board to remove it.
Disengage the 6 claws and pull the
12-volt battery cover to remove it. Remove the cover
3
Remove the fuse.
Only type A fuse c an be removed
using the pullout tool.
4 Check if the fuse is blown.
Replace the blown fuse with a new
fuse of an appropriate amperage
rating. The amperage rating can be
found on the fuse box lid.

429
7
7
When trouble arises
When trouble arises
7-1. Essential informationEmergency flashers .... 430
If your vehicle has to be stopped in an emergency.................................. 431
If the vehicle is submerged or water on the road is ris-
ing ............................. 432
7-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 433
If you think something is wrong ........................ 436
If a warning light turns on or a warning buzzer sounds
.................................. 438
If a warning message is dis- played........................ 449
If you have a flat tire.... 453
If the hybrid system will not start ........................... 460
If you lose your keys ... 462
If the fuel filler door cannot be opened ................. 462
If the electronic key does not operate properly .. 463
If the 12-volt battery is dis- charged ..................... 465
If your vehicle overheats .................................. 470
If the vehicle becomes stuck .......................... 474

4317-1. Essential information
7
When trouble arises
1Steadily step on the brake
pedal with both feet and
firmly depress it.
Do not pump the brake pedal
repeatedly as this will increase the
effort required to slow the vehicle.
2Shift the shift lever to N.
If the shift lever is shifted to N
3 After slowing down, stop the
vehicle in a safe place by the
road.
4 Stop the hybrid system.
If the shift lever cannot be
shifted to N
3 Keep depressing the brake
pedal with both feet to reduce
vehicle speed as much as
possible.
4 To stop the hybrid system,
press and hold the power
switch for 2 consecutive sec-
onds or more, or press it briefly 3 times or more in suc-
cession.
5 Stop the vehicle in a safe
place by the road.
■If emergency stopped
The functions of the air conditioning,
etc. may be partially limited in order
to reduce the power consumption of
the 12-volt battery.
If your vehicle has to
be stopped in an emer-
gency
Only in an emergency, such
as if it becomes impossible
to stop the vehicle in the
normal way, stop the vehi-
cle using the following pro-
cedure:
Stopping the vehicle
WARNING
■If the hybrid system has to be
turned off while driving
Turning the hybrid system off
while driving will not cause loss of
steering or braking control. How-
ever, power assist for the steering
wheel may be lost making it diffi-
cult to steer smoothly before stop-
ping the vehicle depending on the
remaining charge in the 12-volt
battery or usage conditions.
Decelerate as mu ch as possible
before turning off the hybrid sys-
tem.

4467-2. Steps to take in an emergency
■Front passenger detection sen-
sor, seat belt reminder and
warning buzzer
●If luggage is placed on the front
passenger seat, the front passen-
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may n ot detect a pas-
senger, and the warning light may
not operate properly.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front door), side impact sensors
(front), side impact sensors (rear),
driver’s seat position sensor, front
passenger occupant classification
sensors, “AIR BAG ON” indicator
light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle
switch, driver’s seat belt preten-
sioner, front passenger’s seat belt
pretensioner and force limiter, out-
board rear seat belt pretensioners,
airbags, interconnecting wiring and
power sources. ( P.34)
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel t ank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go o ff after several
driving trips.
If the light does not go off even after
several trips, contact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficien t or the voltage
temporarily drops, the electric power steering system warning light may
come on and the warning buzzer
may sound.
At this time, the functions of the air
conditioning, etc. may be partially
limited in order to reduce the power
consumption of the
12-volt battery.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.453
If none of the tires are punctured:
Turn the power switch to OFF then
turn it to ON.
Check if the tire pressure warning
light comes on or blinks.
If the tire pressur e warning light
blinks for approximately 1 minute
then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your
Toyota dealer immediately.
If the tire pressur e warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.403)
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this ca se, adjusting the
tire inflation pressure will turn off the
warning ligh t (after a few minutes).

4507-2. Steps to take in an emergency
sumable.
■If a message that indicates the
need for visiting your Toyota
dealer is displayed
The system or part shown on the
multi-information di splay is malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer immediately.
■If a message that indicates the
need for referring to Owner’s
Manual is displayed
●If the following messages are
shown, follow the instructions,
accordingly.
• If “Engine Coola nt Temp High” is
shown, follow the instructions
(  P.470).
• “Blind Spot Monitor Unavailable” ( P.270)
• “Rear Cross Traffic Alert Unavail- able” ( P.270)
●If the following messages are
shown, there may be a malfunc-
tion. Immediately have the vehi-
cle inspected by your Toyota
dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunc- tion”
• “Accelerator Syst em Malfunction”
• “Smart Key System Malfunction”
●If the following messages are
shown, there may be a malfunc-
tion. Immediately stop the vehicle
in a safe place and contact your
Toyota dealer. Continuing to drive
the vehicle may be dangerous.
• “Oil Pressure Low”
•“Braking Power Low”
●If any of the following messages
are shown on the multi-informa-
tion display, the vehicle may have
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid System Stopped”
• “Engine Stopped”
●If “Maintenance Required for Trac-
tion Battery Cooling Parts See Owner’s Manual” is shown, the fil-
ter may be clogged, the air intake
vent may be blocked, or there may
be a gap in the duct. Therefore,
perform the follo
wing correction
procedure.
• If the air intake vent or filter of the hybrid battery (traction battery)
are dirty, perform the procedures
on P.415to clean them.
• If the warning message is shown when the air intake vent and filter
of the hybrid battery (traction bat-
tery) are not dirty, have the vehicle
inspected at you r Toyota dealer.
●If “12-Volt Battery Charging Sys-
tem Malfunction Stop in a Safe
Place See Owner’s Manual” is
shown
Indicates a malfunction in the vehi-
cle’s charging system. Pull over and
stop the vehicle as soon as it is safe
to do so.
While the message is displayed, the
functions of the air conditioning, etc.
may be partially limited in order to
reduce the power consumption of
the 12-volt battery.
■If “Hybrid System Overheated
Output Power Reduced” is
shown
The message may be shown when
driving under severe operating con-
ditions. (For example, when driving
up a long steep hill or driving up a
steep hill in reverse.)
Coping method: P.472
■If “Traction Battery Needs to be
Protected Refrain from the Use
of N Position” is shown
This message may be displayed
when the shift lever is in N.
As the hybrid battery (traction bat-
tery) can not be charged when the
shift lever is in N, shift the shift lever
to P when the vehicle is stopped.