The Honda Passport key fob typically uses a CR2032 3-volt lithium coin cell.
Battery type and compatibility
For most Passport models, the CR2032 battery is the standard replacement. If you’re unsure about your specific fob version, consult the owner’s manual or contact a Honda dealer to confirm the exact battery type and compatibility for your vehicle year and market.
How to replace the battery
To replace the battery, follow these steps carefully to ensure a secure seal and proper operation.
- Remove the mechanical key by sliding the release tab and pulling the key out of the fob.
- Use a small flat-head screwdriver or a coin to gently pry open the back cover at the seam.
- Take out the old battery, noting how it sits in the compartment.
- Insert the new CR2032 battery with the plus (+) side facing up.
- Snap the back cover back into place until it is securely closed.
- Reinsert the mechanical key and test the fob by locking/unlocking the vehicle from close range.
Be mindful of polarity and ensure the cover is fully closed to maintain water resistance. If the fob does not respond after replacement, remove and reinsert the battery, or reset the fob as described in the owner's manual.
Tips and pitfalls
Before attempting replacement, consider these practical tips to maximize reliability and battery life.
- Use a fresh CR2032 battery from a reputable brand to avoid leaks and performance issues.
- Do not mix old and new batteries; replace only with a single, fresh CR2032.
- Handle the battery by the edges; avoid touching the contacts with fingers to prevent corrosion and residue.
- Inspect and clean the fob’s battery contacts if the range seems reduced after replacement.
- If the fob won’t open or the cover won’t snap, do not force it—contact a dealer or locksmith with Honda experience.
- Dispose of old batteries responsibly according to local regulations by taking them to a battery recycling program.
Following these guidelines will help ensure reliable key fob performance and safe disposal of the old battery.
Summary
In short, the Honda Passport key fob generally takes a CR2032 3V lithium coin cell. Replacement is straightforward: open the fob, swap in a fresh CR2032 with the correct polarity, reassemble, and test. If you are unsure about the exact battery type for your specific fob variant, consult the owner’s manual or contact a Honda dealer for confirmation.