Maintenance and care -> Do-it-yourself maintenance-Wireless remote control/electronic key battery for Your Toyota Corolla 4 Door 2023

333  
6-3. Do-it-yourself maintenance  
Dispose of used batteries accord-  
Wireless remote con-  
trol/electronic key bat-  
ing to local laws.  
*
tery  
Replacing the battery  
*
: If equipped  
Vehicles without a smart key  
system  
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.  
1 Remove the key cover.  
To prevent damage to the key,  
cover the tip of the flathead screw-  
driver with a rag.  
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.  
2 Remove the battery cover.  
If the battery cover is difficult to  
remove, lift the edge to remove it.  
The operational range will be  
reduced.  
6
Items to prepare  
Flathead screwdriver  
Small flathead screwdriver  
Lithium battery CR2032 (vehi-  
cles without a smart key sys-  
tem), or CR2450 (vehicles  
with a smart key system)  
3 Remove the depleted battery  
using a small flathead screw-  
driver.  
Use a CR2032 (vehicles without  
a smart key system), or CR2450  
(vehicles with a smart key sys-  
tem) lithium battery  
Insert a new battery with the “+” ter-  
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.  
334  
6-3. Do-it-yourself maintenance  
minal facing up.  
Vehicles with a smart key sys-  
tem  
1 Release the lock and remove  
the mechanical key.  
4 Install the battery cover with  
the tab facing up.  
Push the entire edge of the battery  
cover into the key.  
2 Remove the key cover.  
To prevent damage to the key,  
cover the tip of the flathead screw-  
driver with a rag.  
5 Install the key cover.  
Align the key cover with the key  
and then press it straight into the  
key.  
3 Remove the depleted battery  
using a small flathead screw-  
driver.  
Make sure that the key cover is  
securely installed without any gaps  
between it and the key.  
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-  
6 Operate the  
or  
switch  
and check that the doors can  
be locked/unlocked.  
335  
6-3. Do-it-yourself maintenance  
minal facing up.  
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.  
4 When installing the key cover  
and mechanical key, install  
by conducting step 2 and  
step 1 with the directions  
reversed.  
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.  
5 Operate the  
or  
switch  
and check that the doors can  
be locked/unlocked.  
NOTICE  
When replacing the battery  
WARNING  
Use a flathead screwdriver of  
appropriate size. Applying exces-  
sive force may deform or damage  
the cover.  
Battery precautions  
6
Observe the following precau-  
tions.  
Failure to do so may result in  
death or serious injury.  
For normal operation after  
replacing the battery  
Do not swallow the battery.  
Doing so may cause chemical  
burns.  
Observe the following precautions  
to prevent accidents:  
Always work with dry hands.  
Moisture may cause the battery  
to rust.  
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.  
Do not touch or move any other  
component inside the remote  
control.  
Do not bend either of the battery  
terminals.  
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.