2016-2022 Toyota Prius 4 Door Do-it-yourself maintenance -> Electronic key battery User Manual
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Do-it-yourself maintenance -> Electronic key battery for Your Toyota Prius 4 Door Fourth Generation (2016-2022)

548  
6-3. Do-it-yourself maintenance  
Electronic key battery  
Replace the battery with a new one if it is depleted.  
You will need the following items:  
● Flathead screwdriver  
● Lithium battery CR2032  
Replacing the battery  
1
Release the lock and take out  
the mechanical key.  
2
Remove the cover.  
Use a screwdriver of an appropri-  
ate size. Forcedly prying may  
cause the cover damaged.  
To prevent damage to the key,  
cover the tip of the screwdriver with  
a rag.  
PRIUS_OM_OM47D44U_(U)  
549  
6-3. Do-it-yourself maintenance  
3
Remove the depleted battery.  
When removing the cover, if the  
battery cannot be seen due to the  
electronic key module attaching to  
the upper cover, remove the elec-  
tronic key module from the cover  
so that the battery is visible as  
shown in the illustration.  
When removing the battery, use a  
screwdriver of an appropriate size.  
Insert a new battery with the “+” terminal facing up.  
When installing, reverse the steps listed.  
4
■Use a CR2032 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 manu-  
facturer.  
●Dispose of used batteries according to the local laws.  
■If the electronic key battery is depleted  
The following symptoms may occur:  
●The smart key system and wireless remote control will not function properly.  
●The operational range will be reduced.  
6
PRIUS_OM_OM47D44U_(U)  
550  
6-3. Do-it-yourself maintenance  
WARNING  
■Removed battery and other parts  
These parts are small and if swallowed by a child, they can cause choking.  
Keep away from children. Failure to do so could result in death or serious  
injury.  
NOTICE  
■For normal operation after replacing the battery  
Observe the following precautions to prevent accidents:  
●Always work with dry hands.  
Moisture may cause the battery to rust.  
●Do not touch or move any other component inside the remote control.  
●Do not bend either of the battery terminals.  
PRIUS_OM_OM47D44U_(U)  

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