BatteriesVerified Sep 28, 2026
Key fob battery
CR2032Confirm that the key case matches the smart-key design in the manual before opening it.
Honda Motor Co. source ↗Exact-code service & fitment
Honda Grace GM4: Key-fob battery size & replacement
Different key systems in the same model family can use different coin cells, so keep the key type and exact vehicle evidence together.
1verified facts
1fitment references
1service references
1step-by-step guides
Before you buy or service: Confirm the physical key/transmitter type before buying a coin cell. Stop if the housing or battery arrangement differs from the cited configuration.
Exact answers
1 source-backedSpecifications & capacities
Purchase-adjacent reference
1 exact referencesParts & fitment
Manufacturer-backed service
1 documentedMaintenance & repair references
electricalCondition based
Key-fob battery replacement
Use a CR2032 replacement battery for the documented Grace smart-key reference.
Replace when required; no time interval is invented.
Honda Japan Grace Hybrid owner manual ↗Owner procedure
Step-by-step guides
Keep the exact code
Continue ownership research
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