The typical battery is a 3V CR2032 coin cell, and you can replace it yourself by prying open the fob, swapping in a new coin cell, and snapping the device back together.
What you’ll need
Gathering a few basic tools and a fresh battery will cover most 2013 Honda remote fobs. The exact battery type is usually CR2032, but always confirm by checking the existing battery or your owner's manual for your exact model.
- CR2032 3V coin cell battery (most 2013 Honda fobs use this size; verify before purchasing)
- Small flathead screwdriver or a sturdy coin for prying
- Plastic pry tool or guitar pick (optional, to avoid scratching)
- Clean workspace or soft cloth
- Good lighting to inspect internal contacts
With the right tools, swapping the battery is typically a quick, tidy job that doesn’t require any special programming.
Step‑by‑step replacement
Follow these steps to safely replace the battery while protecting the fob’s seals and electronics.
- Remove the mechanical key blade: Slide the small latch on the fob and pull out the hidden physical key. This gives you access to the seam and helps prevent damage during opening.
- Open the fob: Use a coin or flathead screwdriver to gently pry along the seam, then separate the two halves. Work slowly to avoid snapping any clips or damaging the case.
- Remove the old battery: Note the orientation of the battery (which side is facing up). If needed, use a non-metal tool to lift the old battery out to prevent shorting the contacts.
- Insert the new battery: Place the CR2032 with the positive (+) side facing up toward the battery contacts. Ensure it sits flat and is fully seated.
- Reassemble the fob: Align the two halves and press them together until they click. Reinsert the mechanical key blade into its slot.
- Test the remote: Stand near the car and press Lock/Unlock or the Panic button to confirm the battery is working. If the car doesn’t respond, you may need to re-sync the fob with your vehicle.
After reassembly and testing, you should have full remote functionality. If you notice corrosion on the contacts or if the fob begins to feel loose, consider replacing the case or consulting a professional.
Re-synchronization and when to seek help
Some 2013 Honda models may require re-programming or re-syncing the key fob after a battery replacement. If the fob still doesn’t operate the car after a fresh battery and correct seating, consult your owner's manual for model-specific re-sync steps or contact a Honda dealership or reputable automotive locksmith for assistance.
Model-specific notes
Honda fobs can vary by model (Civic, Accord, CR-V, Pilot, etc.). If your key fob looks different or you’re unsure about the exact battery type, check the vehicle’s manual or the remote’s side panel for a battery code, or contact an official Honda service resource for confirmation.
Summary: Replacing a 2013 Honda key fob battery is a straightforward DIY task that usually uses a CR2032 coin cell. By opening the fob, swapping the battery with the correct orientation, and snapping the case back together, you restore remote functionality. If the car doesn’t respond after replacement, consult the manual or a dealer for model-specific re-synchronization instructions.