The key fob for a 2017 Honda Accord typically uses a CR2032 3-volt lithium coin battery.
If your fob is not working as expected, the issue is most often a depleted battery or a poor connection inside the fob. This article explains the standard battery type, how to replace it, where to buy replacements, and troubleshooting tips.
Battery type and compatibility
Most 2017 Honda Accord key fobs rely on a replaceable CR2032 battery. This is a common, widely available coin cell that fits the fob’s battery cavity. If you’re unsure, you can verify by checking the fob’s back panel, your owner’s manual, or asking a parts specialist.
To help confirm the correct battery, consider these steps:
- Check the fob’s back for any labeling or a diagram indicating the battery size, though many Honda remotes do not show this explicitly.
- Consult the vehicle’s owner’s manual or Honda’s official support site for model-year specifics.
- Ask a qualified auto parts retailer or a Honda dealer to confirm the correct battery type for your exact fob variant.
In brief, CR2032 is the standard choice for most 2017 Accord key fobs, but verify if your fob has any unique configuration.
How to replace the key fob battery
Replacing the battery is a straightforward DIY task. Follow these steps to ensure a proper replacement and secure reassembly.
- Remove the metal emergency key by pressing the release and pulling it out of the fob.
- Gently pry apart the two halves of the fob at the seam using a small flat-head screwdriver or a thin card—do it slowly to avoid damaging clips.
- Take note of the battery’s orientation (the positive side is usually facing up toward you).
- Remove the old battery and insert a new CR2032 with the correct orientation, making sure it sits flat in the cavity.
- Snap the two halves back together and reinsert the metal emergency key.
- Test the fob by pressing a button to confirm the LED lights or the door locks respond from a reasonable distance.
Tips: Avoid touching the battery contacts with your fingers, handle the fob gently, and recycle the old battery properly.
Where to buy replacements and typical cost
CR2032 batteries are inexpensive and widely available. Here are common options for purchasing replacements.
- Automotive parts stores (for example, AutoZone, Advance Auto Parts, O'Reilly) often stock CR2032 batteries and can confirm compatibility with your fob.
- Big-box retailers (Walmart, Target) carry CR2032 batteries in the electronics or batteries aisle.
- Online retailers (such as Amazon) provide CR2032 options in singles or packs; verify 3V labeling and ensure it’s the correct size for your fob.
- Local hardware or drugstores may also stock CR2032 coins in the battery section.
Expect typical prices from about $1 to $5 per battery, depending on brand and whether you buy single units or packs. Keep spare batteries on hand for future replacements, as the fob’s range can diminish over time regardless of the battery brand.
Troubleshooting common issues after replacement
If the new battery doesn’t restore full function, consider these checks before seeking professional help.
- Inspect the battery contact springs inside the fob for corrosion or debris and clean carefully if needed.
- Ensure the new battery is seated correctly and oriented with the correct polarity.
- Test the fob at different distances and angles; sometimes, metal objects or car proximity can affect range.
- If the fob still won’t work, the internal electronics may be damaged or the fob may need reprogramming by a dealer or locksmith.
In some cases, a non-functional fob after battery replacement requires dealer assistance to re-sync or replace the remote.
Summary
The 2017 Honda Accord key fob uses a replaceable CR2032 3V lithium coin battery in most configurations. Replacing it involves removing the mechanical key, prying apart the fob, swapping in a new CR2032 with the correct orientation, and reassembling. Replacement batteries are widely available at automotive stores, big-box retailers, and online, typically for a few dollars. If issues persist after replacement, consult a Honda dealer or a qualified locksmith to check reprogramming or possible fob damage.