Toyota Corolla 2010 Quick Reference Manual page 353

4-3. Do-it-yourself maintenance
Key battery
Replace the battery with a new one if it is discharged.
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You will need the following items:
● Flathead screwdriver (To prevent damage to the key, cover
the tip of the screwdriver with a rag.)
● Small Phillips-head screwdriver
● Lithium battery
Vehicles with smart key system: CR1632
Vehicles without smart key system: CR2025 (Type A)
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Replacing the battery (vehicles with smart key system)
STEP 1
STEP 2
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CR2016 (Type B)
Take out the mechanical key.
Remove the cover.
I n f o r ma t i o n P r o v i d e d b y :