2017 Honda Fit Key Fob Battery Type

Most 2017 Honda Fit key fobs use a CR2032 3-volt coin cell battery; however, some trims with a standard key (non–push-button start) may use a CR1620. You can verify the exact type by opening the fob and checking the battery label or consulting the owner’s manual.

Battery Type by Fob Style

The 2017 Fit came with two common fob styles depending on trim and equipment. Knowing which fob you have helps you choose the correct replacement battery.

• Smart Entry proximity fob with push-button start (typically EX/EX-L): CR2032, 3V coin cell
• Standard remote integrated into a metal key (often LX or non–push-button start): CR1620, 3V coin cell

If your Fit has push-button start, you almost certainly need a CR2032. If your key has a metal blade with buttons on the head, it is more likely to take a CR1620.

How to Confirm and Replace the Battery

Replacing the battery is straightforward and can be done at home with basic tools. Confirming the battery type before purchasing prevents a second trip to the store.

1. Locate the seam in the key fob case and use a small flathead screwdriver or the built-in key blade to gently pry it open.
2. Note the existing battery’s type (printed on the cell, e.g., “CR2032” or “CR1620”) and its polarity orientation (+ side).
3. Remove the old battery carefully and insert the new coin cell with the same orientation.
4. Snap the case back together and test the fob (lock/unlock). For Smart Entry, check proximity unlock and push-button start.
5. If the fob is unresponsive, reseat the battery, ensure correct polarity, and try again.

The process usually takes a few minutes and does not require reprogramming; the fob should work immediately once the new battery is installed correctly.

Tips and Precautions

A few simple precautions help ensure a smooth battery swap and protect the electronics inside your fob.

• Avoid touching the battery faces with bare fingers; use a tissue or gloves to reduce residue.
• Do not short the battery by bridging the contacts with metal tools.
• Match the voltage (3V) and size exactly—CR2032 and CR1620 are not interchangeable.
• If performance is weak after replacement, try a fresh, brand-name battery; coin cells can self-discharge in storage.
• If your fob is damaged or still unresponsive, a dealer or locksmith can test and service it.

Following these tips helps preserve the fob’s internals and ensures reliable operation after the battery swap.

Summary

The 2017 Honda Fit key fob typically uses a CR2032 3V coin cell for Smart Entry models and a CR1620 3V coin cell for the standard key fob. Check the existing battery or your owner’s manual to confirm, then replace it carefully, observing polarity and using a quality battery for best results.

Is the battery in a Honda key fob 2032 or 2025?

Identifying the Right Battery
Most Honda key fobs use a CR2032 battery, but it’s always a good idea to check your owner’s manual or look at the old battery to confirm.

What kind of battery does a 2017 Honda key fob take?

And make sure these little tabs. Are all the way secure over top of the battery on both sides.

What size battery for 2017 Honda Fit key fob?

Together quite nicely. And then go ahead and put your valet key back in. And that’s it you’ve changed the uh key fob battery for your Honda Fit and that’s all there is to it.

What size battery does a 2017 key fob take?

2005-2010	CR1616
2018-2019	CR2032
2006-2017	CR2032
2015-2020	CR2032
2011-2015	CR2032