The battery is CR2032 3-volt lithium coin cell.
For 2008 Accord models, the standard remote key fob uses a single CR2032 coin cell. Variants exist by region or optional features, but CR2032 is by far the most common. If your fob looks different or includes a smart-key style, verify by inspecting the battery or consulting the owner's manual.
Battery type and compatibility
Before you replace, understand the typical sizes used in this era’s Honda remotes and how to confirm the exact one for your fob.
Common battery type
- CR2032 3-volt lithium coin cell is the standard for most 2008 Honda Accord remotes.
- Some regional or factory variants may use CR2025 or CR1616; check the battery itself to be sure.
- To be certain, open the fob and read the markings on the battery; if it says CR2032, you should replace with CR2032.
While CR2032 is typical, always double-check the exact size by inspecting the current battery or the owner’s manual to avoid using the wrong size.
Replacement steps
Follow these steps to replace the battery in a typical 2008 Accord remote key fob. No reprogramming is normally required after a battery swap, and the fob should work immediately once the new battery is seated correctly.
- Gather a new CR2032 battery and a small flat-head screwdriver or coin.
- Use the edge of a coin or a thin screwdriver to gently pry apart the fob’s two halves at the seam.
- Carefully lift the back cover to expose the battery compartment, taking care not to damage the rubber seal.
- Remove the old battery and dispose of it properly.
- Insert the new CR2032 with the positive (+) side facing up, ensuring it sits flat and centered.
- Reassemble the fob, snapping the halves back together securely.
- Test all remote functions (lock/unlock, trunk release, panic, etc.) to confirm proper operation.
If the remote fails to work after replacement, recheck the battery orientation, ensure the cover is fully seated, and consider trying a fresh battery or the manufacturer's recommendations for reprogramming if offered.
Special cases and tips
Smart keys and regional variants
Some late-2000s Honda variants use different configurations. If your Accord has a smart key fob or if you’re outside the typical US market, the battery spec may differ (though CR2032 is common). Consult the owner's manual or contact a Honda dealer for precise guidance for your VIN and trim.
Summary
For most 2008 Honda Accord key fobs, the required battery is a CR2032 3-volt lithium coin cell. Replacing it is straightforward and usually does not require reprogramming; simply ensure proper orientation and a secure seal, then test the remote.