The 2017 Honda Odyssey key fob uses a CR2032 3-volt lithium coin cell. This is the standard battery for most Honda remotes of that era, and it’s widely available at electronics stores and supermarkets. If you’re unsure about your specific key fob variant, consult the owner’s manual or check the fob itself for battery type markings.
Battery type and compatibility
Understanding the correct battery size and voltage helps ensure you buy the right replacement and avoid damage to the fob. The 20 mm diameter CR2032 coin cell is the common choice for the Odyssey’s remote, but always verify if you’re dealing with a spare or aftermarket key fob that might have different specifications.
How to replace the battery
Here's what you need to prepare before starting the replacement:
- CR2032 3V lithium coin cell (brand-name recommended)
- Small flathead screwdriver or a pry tool
- Clean, soft surface to protect the fob
- Optional: tweezers to handle the battery
With the replacement battery in hand, you’re ready to proceed to the step-by-step procedure to open the fob and swap the battery.
- Hold the key fob with the buttons facing down and locate the seam along the edge.
- Gently pry apart the two halves of the fob at the seam using a small flathead screwdriver or your fingernail.
- Remove the back cover and locate the battery seated in its holder.
- Note the orientation of the old battery, then lift it out (tweezers can help).
- Place the new CR2032 in the same position, with the positive (+) side facing up toward the contacts.
- Reconnect the back cover and press firmly to ensure a snug seal.
- Test the remote by pressing a button from a short distance to confirm operation. If it doesn’t work, recheck battery orientation and seating, then try again.
After the replacement is complete, test the fob again to confirm it’s functioning correctly. Keep the spare battery in a safe place and dispose of the old one at a battery recycling facility or retailer that accepts batteries.
Where to buy and disposal tips
Practical advice for obtaining the right battery and disposing of it responsibly:
- Buy CR2032 from reputable brands at electronics stores, automotive shops, or major retailers.
- Check the expiration date and store the spare in a cool, dry place.
- Recycle the old battery at a local recycling program, automotive store, or battery drop-off point.
Overall, replacing the Odyssey key fob battery is a straightforward task, and keeping a fresh battery on hand can save you from being locked out or stranded. If you’re uncomfortable performing the replacement, a locksmith or Honda dealer can assist.
Summary
The 2017 Honda Odyssey key fob runs on a CR2032 3V lithium coin cell. Replacement involves opening the fob, removing the old battery, inserting a new CR2032 with the correct orientation, reassembling the fob, and testing its range. These batteries are widely available and should be recycled properly when spent.