Key information for Your Toyota Prius 4 Door Fourth Generation (2016-2022)

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3-1. Key information  
Keys  
The keys  
The following keys are provided with the vehicle.  
1
Electronic keys  
• Operating the smart key system  
(P. 192)  
• Operating the wireless remote  
control function  
2
3
Mechanical keys  
Key number plate  
Wireless remote control  
1
Locks all the doors (P. 182)  
2
Unlocks all the doors (P. 182)  
3
4
Opens the side windows and  
moon roof (if equipped)*  
(P. 182)  
Sounds the alarm (P. 177)  
*: This setting must be customized at your Toyota dealer.  
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3-1. Key information  
Using the mechanical key  
To take out the mechanical key,  
slide the release lever and take  
the key out.  
Release  
lever  
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 cylinder, turn it over and re-  
attempt to insert it.  
After using the mechanical key, store it in the electronic key. Carry the  
mechanical key together with the electronic key. If the electronic key bat-  
tery is depleted or the entry function does not operate properly, you will  
need the mechanical key. (P. 635)  
3
Panic mode  
When  
is pressed for longer than  
about one 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.  
To stop the alarm, press any button on the  
electronic key.  
If you lose your mechanical keys  
New genuine mechanical keys can be made by your Toyota dealer using  
another mechanical key and the key number stamped on your key number  
plate. Keep the plate in a safe place such as your wallet, not in the vehicle.  
When riding in an aircraft  
When bringing an electronic key onto an aircraft, make sure you do not press  
any buttons on the electronic key while inside the aircraft cabin. If you are  
carrying an electronic 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 interfere with the operation of the aircraft.  
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3-1. Key information  
Electronic key battery depletion  
The standard battery life is 1 to 2 years.  
If the battery becomes low, an alarm will sound in the cabin and a message  
will be displayed on the multi-information display when the hybrid system  
stops.  
As the electronic key always receives radio waves, the battery will become  
depleted even if the electronic key is not used. The following symptoms indi-  
cate that the electronic key battery may be depleted. Replace the battery  
when necessary. (P. 548)  
• The smart key system or the wireless remote control does not operate.  
• The detection area becomes smaller.  
• The LED indicator on the key surface does not turn on.  
You can replace the battery by yourself (P. 548). 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.  
To avoid serious deterioration, do not leave the electronic key within 3 ft.  
(1 m) of the following electrical appliances that produce a magnetic field:  
• TVs  
• Personal computers  
• Cellular phones, cordless phones and battery chargers  
Table lamps  
• Induction cookers  
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3-1. Key information  
If a message regarding the state of the electronic key or power switch  
mode, etc. is shown  
To prevent trapping the electronic key inside the vehicle, leaving the vehicle  
without turning off the power switch or other passengers 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 display. In those cases, follow the instructions on the  
display immediately.  
If “Key Battery Low Replace Key Battery” is displayed on the multi-infor-  
mation display  
The electronic key has a low battery. Replace the electronic key battery.  
(P. 548)  
Replacing the battery  
P. 548  
Confirmation of the registered key number  
3
The number of keys already registered to the vehicle can be confirmed. Ask  
your Toyota dealer.  
If “A New Key has been Registered Contact Your Dealer for Details” is  
displayed on the multi-information display  
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 regis-  
tered, ask your Toyota dealer to check if an unknown electronic key (other  
than those in your possession) has been registered.  
If a wrong key is used  
The key cylinder rotates freely to isolate inside mechanism.  
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3-1. Key information  
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.  
Do not attach metallic or magnetic materials to the keys or place the keys  
close to such materials.  
Do not disassemble the keys.  
Do not attach a sticker or anything else to the surface of the electronic key.  
Do not place the keys near objects that produce magnetic fields, such as  
TVs, audio systems and induction cookers.  
Do not place the keys near medical electrical equipment such as low-fre-  
quency therapy equipment or microwave therapy equipment, and do not  
receive medical attention with the keys on your person.  
Carrying the electronic key on your person  
Carry the electronic key 3.9 in. (10 cm) or more away from electric appli-  
ances 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, caus-  
ing the key to not function properly.  
In case of a smart key system malfunction or other key-related prob-  
lems  
Take your vehicle with all the electronic keys provided with your vehicle to  
your Toyota dealer.  
When an electronic key is lost  
If the electronic key remains lost, the risk of vehicle theft increases signifi-  
cantly. Visit your Toyota dealer immediately with all remaining electronic  
keys that were provided with your vehicle.  
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