The key fob for a 2016 Honda Odyssey uses a CR2032 lithium coin battery.
In practice, this is the standard cell used in most Odyssey remotes from that era. Different markets or slight variant models can occasionally differ, so it’s wise to verify by inspecting the fob's battery compartment or referring to the owner’s manual if you’re unsure.
Battery type and verification
To confirm the correct battery size before purchasing or replacing, refer to the fob’s current battery or lid markings and compare with common coin-cell sizes.
- CR2032 lithium coin cell is the standard size for the majority of 2016 Odyssey remotes (20 mm diameter, 3.2 mm thick).
- In rare cases, regional variants may use a different size; if your fob won’t accommodate a CR2032, consult the owner’s manual or a Honda dealer for the exact specification.
Before the list: Here are the key facts about the battery used in most 2016 Odyssey key fobs and how to verify it.
Concluding paragraph: For most owners, a CR2032 will be the correct choice, and confirming via the fob’s markings can prevent mismatches.
How to replace the battery
Replacing a worn battery is a common, straightforward maintenance task. The following steps guide you through a safe replacement.
- Use a small flat-head screwdriver or your fingernail to gently pry apart the two halves of the key fob at the seam.
- Separate the halves carefully and remove the old battery, noting its orientation (positive side facing up).
- Insert a new CR2032 with the positive (+) side facing up and ensure it sits flat in the compartment.
- Snap the fob halves back together until they click, then test the remote to confirm proper operation.
Before the list: These steps describe a typical CR2032 replacement for the 2016 Odyssey key fob.
Concluding paragraph: Dispose of the old battery properly and ensure the fob is reassembled securely; if the remote still malfunctions after replacement, seek assistance from a dealer or locksmith.
Summary
The 2016 Honda Odyssey key fob commonly uses a CR2032 lithium coin battery. Replacing it is a straightforward DIY task: identify the battery, replace it with a new CR2032 in the correct orientation, and reassemble the fob. If issues persist, consult the owner’s manual or a Honda service professional.


