The remote key fob for a 2006 Honda Accord uses a CR2032 3-volt lithium coin cell battery.
In more detail, this battery powers the keyless entry functions (lock/unlock, trunk release, panic) and is the standard coin-cell size used in most Accord remotes from that era. If you’re replacing the battery, verify the exact size by inspecting the old battery or the fob’s documentation before purchase.
Identifying the correct battery
Use the following approach to confirm the correct coin cell before buying a replacement.
- Carefully open the key fob to expose the internal battery. There’s usually a small seam or slot you can pry apart with a fingernail or a coin.
- Inspect the battery that’s inside. The common model is CR2032 (20 mm diameter, 3.2 mm thick). Some variants may use CR2025 (20 mm diameter, 2.5 mm thick).
- If you can’t read the markings, check the fob’s back for a part number or refer to the owner’s manual, or contact a Honda dealer or parts retailer with your vehicle’s VIN for confirmation.
Conclusion: CR2032 is the standard for most 2006 Accords, but CR2025 can appear in some variants or aftermarket remotes. Confirm before purchasing a replacement.
How to replace the battery
Replace the battery only with a fresh coin cell of the same size and a 3-volt rating. Follow these steps for a typical Honda key fob:
- Gather the correct replacement battery (CR2032 or the identified size). Ensure it is new and not expired.
- Gently pry apart the two halves of the fob at the seam to access the battery.
- Remove the old battery and dispose of it properly.
- Insert the new battery with the correct polarity (usually the positive side facing up).
- Reassemble the fob and test by pressing the buttons to confirm the remote functions work from a short distance.
Conclusion: After replacing with the correct size, the remote should regain full functionality. If issues persist, the problem may lie with the transmitter or vehicle receiver and may require professional diagnostic help.
Summary
In most cases, the 2006 Honda Accord key fob uses a CR2032 3V lithium coin cell. Always confirm the exact size by inspecting the old battery or the fob’s documentation before purchasing a replacement. Proper replacement is quick and restores remote functionality.