Toyota 2012 Prius Owner's Manual page 519

4-3. 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 CR1632
■
Replacing the battery
STEP 1
STEP 2
STEP 3
STEP 4
When installing, reverse the steps listed.
PRIUS PHV_OM_OM47818U_(U)
Take out the mechanical key.
Remove the cover.
To prevent damage, cover the
tip of the screwdriver with a
rag.
Remove the depleted battery.
Insert a new battery with the
"+" terminal facing up.
ITO43P194
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