2022 TOYOTA COROLLA CROSS key battery

4667-3. Do-it-yourself maintenance
Terminals
Hold-down clamp
■Before recharging
When recharging, the battery pro-
duces hydrogen gas which is flam-
mable and explosive. Therefore,
observe the following precautions
before recharging:
●If recharging with the battery
installed on the vehicle, be sure to
disconnect the ground cable.
●Make sure the charger is off when
connecting and disconnecting the
charger cables to the battery.
■After recharging/reconnecting
the battery (vehicles with a
smart key system)
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the battery. If this happens,
use the wireless remote control or
the mechanical key to lock/unlock
the doors.
●Start the engine with the engine
switch in ACC. The engine may
not start with the engine switch
turned off. However, the engine
will operate normally from the sec-
ond attempt.
●The engine switch mode is
recorded by the vehicle. If the bat-
tery is reconnected, the vehicle
will return the engi ne switch mode
to the status it was in before the
battery was disconnected. Make
sure to turn off the engine before disconnecting the battery. Take
extra care when connecting the
battery if the engine switch mode
prior to discharge is unknown.
If the system will no t start even after
multiple attempts, contact your Toy-
ota dealer.
WARNING
■Chemicals in the battery
The battery contains poisonous
and corrosive sulfuric acid and
may produce hydrogen gas which
is flammable and explosive. To
reduce the risk of death or serious
injury, take the following precau-
tions while working on or near the
battery:
●Do not cause sparks by touch-
ing the battery terminals with
tools.
●Do not smoke or light a match
near the battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the battery.
●Keep children away from the
battery.
■Where to safely charge the
battery
Always charge the battery in an
open area. Do not charge the bat-
tery in a garage or closed room
where there is insufficient ventila-
tion.

4837-3. Do-it-yourself maintenance
7
Maintenance and care
ment may be required. (For sched-
uled maintenance information,
please refer to the “Scheduled
Maintenance Guide” or “Owner’s
Manual Supplement”.)
■If air flow from the vents
decreases dramatically
The filter may be clogged. Check
the filter and replace if necessary.*: If equipped
■If the key battery is depleted
The following symptoms may occur:
●The smart key system (if
equipped) and wireless remote
control will not function properly.
●The operational range will be
reduced.
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2016 (vehi-
cles without a smart key sys-
tem) or CR2450 (vehicles with
a smart key system)
■Use a CR2016 or CR2450 lith-
ium 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-
NOTICE
■When using the air condition-
ing system
Make sure that a filter is always
installed.
Using the air conditioning system
without a filter may cause damage
to the system.
■To prevent damage to the fil-
ter cover
When moving the filter cover in
the direction of arrow to release
the fitting, pay attention not to
apply excessive force to the
claws. Otherwise, the claws may
be damaged.
Wireless remote con-
trol/electronic key bat-
ter y
*
Replace the battery with a
new one if it is depleted.
As the key may be damaged
if the following procedure is
not performed properly, it is
recommended that key bat-
tery replacement be per-
formed by your Toyota
dealer.
Items to prepare

4847-3. Do-it-yourself maintenance
ing to local laws.
Vehicles without a smart key
system
1 Remove the cover.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
2Remove the module.
3 Open the case cover using a
coin protected with tape etc.
and remove the depleted bat-
tery.
Insert a new battery with the “+” ter- minal facing up.
4
Install the cover.
Align the cover with the key and
then press it straight into the key.
Make sure that the cover is
securely installed without any gaps
between it and the key.
5Operate the or switch
and check that the doors can
be locked/unlocked.
Vehicles with a smart key sys-
tem
1 Release the lock and remove
the mechanical key.
Replacing the battery

4857-3. Do-it-yourself maintenance
7
Maintenance and care
2Remove the key cover.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
3Remove 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.
Insert a new battery with the “+” ter-
minal facing up.
4When installing the key cover
and mechanical key, install
by conducting step 2 and
step 1 with the directions
reversed.
5 Operate the or switch
and check that the doors can
be locked/unlocked.
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 key. If a battery is
swallowed, 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 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 body, get emer-
gency medical attention imme-
diately.
■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, break or cut a bat-
tery.

495
8
8
When trouble arises
When trouble arises
.8-1. Essential informationEmergency flashers .... 496
If your vehicle has to be stopped in an emergency.................................. 496
If the vehicle is submerged or water on the road is ris-
ing ............................. 498
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 499
If you think something is wrong ........................ 503
Fuel pump shut off system .................................. 504
If a warning light turns on or a warning buzzer sounds.................................. 505
If a warning message is dis- played........................ 515
If you have a flat tire.... 518
If the engine will not start .................................. 528
If you lose your keys ... 530
If the electronic key does not operate properly .. 530
If the vehicle battery is dis- charged ..................... 532
If your vehicle overheats .................................. 536
If the vehicle becomes stuck .................................. 538

5298-2. Steps to take in an emergency
8
When trouble arises
The battery terminal connec-
tions may be loose or cor-
roded. ( P.465)
The engine starting system may
be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, an interim
measure is available to start the
engine. ( P.529)
One of the following may be the
cause of the problem:
 The battery may be dis-
charged. ( P.532)
 One or both of the battery ter-
minals may be disconnected.
( P.465)
Contact your Toyota dealer if the
problem cannot be repaired, or if
repair procedures are unknown.
When the engine does not start,
the following steps can be used as an interim measure to start
the engine if the engine switch is
functioning normally.
Do not use this starting proce-
dure except in case of emer-
gency.
1
Set the parking brake.
( P.171)
2 Check that the shift lever is in
P.
3 Turn the engine switch to
ACC.
4 Press and hold the engine
switch for about 15 seconds
while depressing the brake
pedal firmly.
Even if the engine can be started
using the above steps, the system
may be malfunctioning. Have the
vehicle inspected by your Toyota
dealer.
The starter motor does
not turn over (vehicles
with a smart key system)
The starter motor does
not turn over, the interior
lights and headlights do
not turn on, or the horn
does not sound.
Emergency start function
(vehicles with a smart key
system)

5308-2. Steps to take in an emergency
■When the electronic key does
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in
the customization setting. If it is
off, turn the function on. (Custom-
izable features: P.563)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.120)
Use the mechanical key
( P.103) in order to perform the
If you lose your keys
New genuine keys can be
made by your Toyota dealer
using the other key (vehi-
cles without a smart key
system) or mechanical key
(vehicles with a smart key
system) and the key number
stamped on your key num-
ber plate.
Keep the plate in a safe
place such as your wallet,
not in the vehicle.
NOTICE
■When an electronic key is lost
(vehicles with a smart key
system)
If the electronic key remains lost,
the risk of vehicle theft increases
significantly. Visit your Toyota
dealer immediately with all
remaining electronic keys that
were provided with your vehicle.
If the electronic key
does not operate prop-
erly (vehicles with a
smar t key system)
If communication between
the electronic key and vehi-
cle is interrupted ( P.120)
or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors can
be opened and the engine
can be started by following
the procedure below.
NOTICE
■In case of a smart key system
malfunction or other
key-related problems
Take your vehicle with all the elec-
tronic keys provided with your
vehicle to your Toyota dealer.
Locking and unlocking
the doors

5328-2. Steps to take in an emergency
4Press the engine switch
shortly and firmly.
In the event that the engine still
cannot be started, contact your
Toyota dealer.
■Stopping the engine
Shift the shift lever to P and press
the engine switch as you normally
do when stopping the engine.
■Electronic key battery
As the above procedure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediately when the bat-
tery is depleted. ( P.483)
■Alarm (if equipped)
If a door is unlocked using the
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered. ( P. 7 2 )
■Changing engine switch modes
Release the brake pedal and press
the engine switch in step 3 above.
The engine does not start and
modes will be changed each time
the switch is pressed. ( P.166)
If the vehicle batter y
is discharged
The following procedures
may be used to start the
engine if the vehicle’s bat-
tery is discharged.
You can also call your Toy-
ota dealer or a qualified
repair shop.