A Honda Civic key fob battery is a CR2032 if the car starts with a button and the fob can stay in your pocket. It is usually a CR1616 if you still turn a metal key and the buttons live on a flip head or a small remote. Those two Civics can sit in the same family driveway. They do not share a battery drawer.
The tenth-generation cars from 2016 through 2021, and the eleventh-generation cars from 2022 on, are the heart of the CR2032 group in the US and Canada. Sedan, coupe, hatchback, Si, and Type R smart fobs in those years use that cell even when the button count changes. A tailgate button on a hatchback does not add a second battery.
The battery, stated plainly
| What this page covers | honda civic key fob battery |
|---|---|
| Battery to buy | CR2032 on smart fobs; CR1616 on many older remotes |
| Fob you are likely holding | Civic smart key or older flip remote |
| Cell type | 3-volt lithium coin cell. Do not use a rechargeable LIR cell. |
| Programming after the swap | Not required when you only change the battery. |
Earlier Civics are where people buy the wrong cell. An eighth-generation remote is often the smaller CR1616. Some ninth-generation trims had a smart key while a base car still used a simpler remote. The year on the registration is a clue. The shell is the proof. Open it and read the stamp before you buy a sleeve of the more famous size.
The smart-fob shell of a modern Civic hides a mechanical key. Slide that key out, twist a coin in the notch, and the halves separate. Do not use that motion on a flip key. Flip keys unscrew. Mixing the two techniques is how Civic shells crack, and a cracked Civic shell is a much larger bill than a coin cell.
Range on a healthy Civic smart fob should cover a normal parking spot, not just the door handle. If you have to touch the fob to the driver’s window, the cell is tired or the contact is poor. The low-battery message on later clusters means the same thing. Replace the cell. You do not program the fob afterward.
Si and Type R fobs are not a special battery. They are the same smart-key family as the Civic they are based on, with whatever buttons that generation used. Owners searching for a “Type R battery” still need the stamp, because a used Type R sometimes wears a replacement fob from a later parts catalog.
In the UK and Europe the Civic, including hybrid e:HEV models, follows the same IEC numbers. Right-hand drive does not flip the cell. Australian Civics follow it too. Heat in a closed car shortens life. It does not change CR2032 into something else.
If the fob still misbehaves
If a new cell does not restore range, check polarity and that the seam is fully clicked before you assume the Civic needs a new key. A fob that dies every few weeks should be stored away from the car at night, and a dealer can check for a fob update if a second good cell also dies fast. The touch-start backup, fob held on the start button, will get you home while you sort it out.
Related guides
- How to Replace a Honda Key Fob Battery
- 2016 Honda Civic Key Fob Battery
- 2022 Honda Civic Key Fob Battery
- Honda Civic Hatchback Key Fob Battery
Questions people ask
What battery does a Honda Civic key fob take?
CR2032 for most push-button smart fobs from 2016 on. CR1616 for many older turn-key remotes. Read the stamp.
Are Civic Si and Type R batteries different?
No. They use the smart-key cell of their generation, usually CR2032.
Do I program a Civic fob after a battery change?
No. The fob keeps its code.
Honda is a trademark of Honda Motor Co., Ltd. Honda Key Fob Battery is an independent guide and is not affiliated with, endorsed by, or sponsored by Honda. The code printed on the cell already in your fob overrides any chart. A fob bought later, or a car sold in another country, can use a different shell.