Key Battery; Replacing The Battery (Vehicles With Smart Key System) - Toyota 2010 Corolla Owner's Manual

4-3. Do-it-yourself maintenance

Key battery

Replace the battery with a new one if it is discharged.
You will need the following items:
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● 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)

Replacing the battery (vehicles with smart key system)

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STEP 1
STEP 2
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CR2016 (Type B)
Take out the mechanical key.
Remove the cover.