How to Replace a Honda Grace GM4 Key-Fob Battery
Replace the Honda Grace GM4 key-fob battery using the manufacturer-backed CR2032 service reference.
Honda’s Grace Hybrid owner manual specifies a CR2032 coin-cell battery for the smart key.
Open verified GM4 reference →What you need
- CR2032 coin-cell battery
- Small flat plastic pry tool or protected flat screwdriver
Step by step
- 1
Confirm the GM4 key
Check the exact vehicle/key configuration against the linked GM4 reference before replacement.
- 2
Remove the mechanical key
Release and remove the emergency key from the smart-key housing.
- 3
Open the case
Use the case notch and a protected tool to separate the housing without damaging the clips.
- 4
Check battery orientation
Note how the old coin cell is installed before lifting it from the holder.
- 5
Install the CR2032
Seat a fresh CR2032 in the same orientation without bending the contacts.
- 6
Reassemble and test
Snap the housing closed evenly, reinstall the mechanical key and test the remote functions.