2025-2026 Toyota bZ4X SUV Before driving -> Keys User Manual
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Before driving -> Keys for Your Toyota bZ4X SUV Second Generation (2025-2026)

162  
4-1. Key information  
4-1.Key information  
message will be displayed on the  
multi-information display when the  
EV system stops.  
Keys  
●To reduce key battery depletion  
when the electronic key is to not  
be used for long periods of time,  
set the electronic key to the bat-  
tery-saving mode. (P.188)  
Key types  
The following keys are provided  
with the vehicle.  
●As the electronic key always  
receives radio waves, the battery  
will become depleted even if the  
electronic key is not used. The fol-  
lowing symptoms indicate that the  
electronic key battery may be  
depleted. Replace the battery  
when necessary.  
• The smart key system or the wire-  
less remote control does not oper-  
ate.  
• The detection area becomes  
smaller.  
Electronic keys  
• The LED indicator on the key sur-  
face does not turn on.  
• Operating the smart key system  
(P.187)  
You can replace the battery by your-  
self (P.497). However, as there is  
a danger that the electronic key may  
be damaged, it is recommended  
that replacement is carried out by  
your Toyota dealer.  
• Operating the wireless remote  
control function (P.164)  
• Operating the Remote Air Condi-  
tioning System (P.409)  
Mechanical keys  
Key number plate  
●To avoid serious deterioration, do  
not leave the electronic key within  
3 ft. (1 m) of the following electri-  
cal appliances that produce a  
magnetic field:  
■When riding in an aircraft  
When bringing an electronic key  
onto an aircraft, make sure you do  
not press any buttons on the elec-  
tronic key while inside the aircraft  
cabin. If you are carrying an elec-  
tronic key in your bag, etc., ensure  
that the buttons are not likely to be  
pressed accidentally. Pressing a  
button may cause the electronic key  
to emit radio waves that could inter-  
fere with the operation of the air-  
craft.  
• TVs  
• Personal computers  
• Cellular phones, cordless phones  
and battery chargers  
• Table lamps  
• Induction cookers  
●If the electronic key is near the  
vehicle for longer than necessary,  
even if the smart key system is not  
operated, the key battery may  
become depleted faster than nor-  
mal.  
■Electronic key battery depletion  
■If a message regarding the state  
of the electronic key or power  
switch mode, etc. is shown  
●The standard battery life is 1 to 2  
years.  
●If the battery becomes low, an  
alarm will sound in the cabin and a  
To prevent trapping the electronic  
Owners Manual_USA_M42C01_en  
163  
4-1. Key information  
key inside the vehicle, leaving the  
vehicle carrying the electronic key  
on your person without turning the  
power switch to OFF or other pas-  
sengers from unintentionally taking  
the key out of the vehicle, etc., a  
message that prompts the user to  
confirm the state of the electronic  
key or power switch mode may be  
shown on the multi-information dis-  
play. In those cases, follow the  
instructions on the display immedi-  
ately.  
NOTICE  
■To prevent key damage  
●Do not drop the keys, subject  
them to strong shocks, or bend  
them.  
●Do not expose the keys to high  
temperatures for long periods of  
time.  
●Do not get the keys wet or wash  
them in an ultrasonic washer,  
etc.  
■If “Key Battery Low Replace  
Key Battery” is displayed on  
the multi-information display  
●Do not attach metallic or mag-  
netic materials to the keys or  
place the keys close to such  
materials.  
The electronic key has a low battery.  
Replace the electronic key battery.  
(P.497)  
●Do not disassemble the keys.  
4
■Replacing the battery  
P.497  
●Do not attach a sticker or any-  
thing else to the surface of the  
electronic key.  
■Confirmation of the registered  
key number  
●Do not place the keys near  
objects that produce magnetic  
fields, such as TVs, audio sys-  
tems and induction cookers.  
The number of keys already regis-  
tered to the vehicle can be con-  
firmed. Ask your Toyota dealer for  
details.  
■If “A New Key has been Regis-  
tered Contact Your Dealer for  
Details” is displayed on the  
multi-information display  
●Do not place the keys near  
medical electrical equipment  
such as low-frequency therapy  
equipment or microwave ther-  
apy equipment, and do not  
receive medical attention with  
the keys on your person.  
This message will be displayed  
each time the driver’s door is  
opened when the doors are  
unlocked from the outside for  
approximately 10 days after a new  
electronic key has been registered.  
If this message is displayed but you  
have not had a new electronic key  
registered, ask your Toyota dealer to  
check if an unknown electronic key  
(other than those in your posses-  
sion) has been registered.  
■Carrying the electronic key  
on your person  
Carry the electronic key 3.9 in.  
(10 cm) or more away from elec-  
tric appliances that are turned on.  
Radio waves emitted from electric  
appliances within 3.9 in. (10 cm)  
of the electronic key may interfere  
with the key, causing the key to  
not function properly.  
Owners Manual_USA_M42C01_en  
164  
4-1. Key information  
NOTICE  
■Theft deterrent panic mode  
When is pressed for longer  
■In case of a smart key system  
malfunction or other key-  
related problems  
than about 1 second, an alarm will  
sound intermittently and the vehicle  
lights will flash to deter any person  
from trying to break into or damage  
your vehicle.  
P.539  
■When an electronic key is lost  
P.539  
To stop the alarm, press any button  
on the electronic key.  
Wireless remote control  
The electronic keys are  
equipped with the following  
wireless remote control:  
■Conditions affecting operation  
P.188  
Using the mechanical key  
To take out the mechanical key,  
slide the release lever  
take the key out.  
and  
Locks all the doors (P.167)  
Unlocks all the doors  
(P.167)  
Opens the side windows*1  
(P.167)  
The mechanical key can only be  
inserted in one direction, as the key  
only has grooves on one side. If the  
key cannot be inserted in a lock cyl-  
inder, turn it over and re-attempt to  
insert it.  
Opens and closes the power  
back door*2 (P.175)  
After using the mechanical key,  
store it in the electronic key. Carry  
the mechanical key together with  
the electronic key. If the electronic  
key battery is depleted or the entry  
function does not operate properly,  
you will need the mechanical key.  
(P.539)  
Operates Remote Air Condi-  
tioning System (P.409)  
Sounds the alarm (P.164)  
*1  
:These settings must be custom-  
ized at your Toyota dealer.  
*2  
:If equipped  
Owners Manual_USA_M42C01_en  

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