The battery in a 2019 Honda Fit key fob is a CR2032 3V lithium coin cell. To replace it, you’ll swap the old battery in the fob’s shell and reassemble — the remote should work again right away once the new cell is seated correctly.
The following guide explains exactly how to access the battery, replace it safely, and verify that the fob is functioning. It covers the typical flip-style key fob used on most 2019 Fits, along with tips if the remote doesn’t respond after replacement.
What you’ll need
Gather these items before you start so you can complete the job in one sitting.
- CR2032 3V lithium coin cell
- Small flat-head screwdriver or a coin for prying
- Clean cloth or microfiber to handle the battery and avoid fingerprints
- Optional: a soft tray to keep small parts organized
Having the right parts and a clean workspace helps prevent damage to the fob’s interior and seals.
Step-by-step battery replacement
Proceed with care to avoid damaging the fob’s shell or electronics. Each step is designed to minimize risk while replacing the battery.
- Remove the emergency mechanical key: slide the release latch on the side of the fob and pull the metal key out.
- Open the fob: locate the seam along the back and gently pry apart halves using a small flat-head screwdriver or a coin. Work around the edges until the two halves separate.
- Remove the old battery: note the orientation of the battery (which side is up). Most Honda remotes have the plus (+) side facing up toward the top of the case.
- Insert the new battery: place the CR2032 in the same orientation, ensuring it sits flat and contacts are clean.
- Reconnect the halves: snap the back cover back onto the fob until it clicks securely, then reinsert the emergency key.
- Test the fob: press the lock, unlock, and panic buttons to confirm the remote is working. If it doesn’t respond, re-check battery orientation and seating, and ensure there are no bent contacts.
With the battery properly seated and the case snapped closed, your key fob should operate normally.
Troubleshooting and reprogramming
If the remote doesn’t work after replacement, there are a few possibilities: the battery isn’t seated correctly, the contacts are dirty or corroded, or the fob may need to be reprogrammed or re-synced with your car. Many 2019 Honda Fits will work immediately after a proper battery swap, but some trims require a dealership or locksmith to reprogram the key for the car’s immobilizer system.
Reprogramming and dealer help
If reprogramming is required, contact a Honda dealer or a qualified automotive locksmith. They can confirm whether your fob needs re-learning to the vehicle and perform the necessary steps. Always refer to your owner’s manual for model-specific guidance, as procedures can vary by trim and market.
Summary
Replacing the battery in a 2019 Honda Fit key fob is a straightforward DIY task. Use a CR2032 cell, carefully pry open the fob, replace the battery with the correct orientation, and snap the shell back together. Test the remote immediately. If it doesn’t work after replacement, double-check the battery contact points and consider reprogramming or dealer support if required.
Can I replace my Honda key fob battery myself?
And then twist. Your key fob isn't open all the way yet so now you'll need to use the key end and wedge it between the gap. And pop it. Open.
Does the Honda key fob need to be reprogrammed after replacing the battery?
The good news is that most of the time, you don't actually need to reprogram a Honda key fob after battery replacement. It often starts working again once the battery is in the right way. But in some cases, it might need a few extra steps.
How do you open a 2019 Honda key fob?
If you need to pop the new one in. And then you. Just put this back.
How to change 2019 Honda Fit key fob battery?
Here is a Honda Fit key remote. We have one slot over there for that you need a flathead screwdriver. And you have one screw over here that you have to take off for that you'll need a very small