How to Open Honda Key Fob & Replace the Battery

Woman walking toward Honda Pilot

Honda offers great attention to detail on every model, including the Honda key fob battery. While this genuine Honda part can be trusted to stand the test of time, inevitably every battery will lose its charge. When that happens, you may need to learn how to conduct a Honda key fob battery replacement in your Manchester garage.

While our team would be happy to handle the job for you, battery failure rarely happens at a convenient time. That is why we have put together this comprehensive guide to teach you how to change a Honda key battery no matter what situation you are in. Learn more about how to open a Honda key fob and swap the battery below!

What is the Honda Key Battery Type?

Finding a Honda key fob battery replacement may be a lot easier than you think. That is because the Honda key battery can be found in many stores around Concord. The Honda key fob most commonly uses a flat, circular 3-volt battery. We recommend working with our parts team to get a genuine Honda key battery replacement, but you can contact our parts center for the right voltage and size for your Honda model if you are in a pinch!

How to Open the Honda Key Fob

Learning how to open your Honda key fob is a simple step in the Honda key fob battery replacement process. Follow these steps for an easy way to open the Honda key fob:

  1. Locate the button to release the metal key inside the fob. Slide that button open, and pull the key out.
  2. Carefully place the edge of the key into the slot at the top of the key fob. Wedge the key and lightly twist; the back of the key fob should pop off.

How to Replace a Honda Key Fob Battery

Once you have your Honda key fob open, you want to take precautions to ensure that the entire fob does not fall apart. If you attempt to simply pull the battery out, you may pop out essential components and create a mess. Follow these pro tips to keep your fob intact while replacing your Honda key battery:

  1. Hold your thumb right above where the battery is located.
  2. Using your other hand, carefully pry the dead battery out and replace it with a fresh one.
  3. Line the back of the key fob up with the front half, and gently press the pieces back together. Once secured, you will hear a snap.

How to Program a Honda Key Fob

Now that you know how to open a Honda key fob and swap the battery, it is natural to want to learn how to program a Honda key. Once you have conquered the task of learning how to change a Honda key battery, programming is a breeze. You can learn how to program a Honda key with these simple steps:

  1. Enter the cabin, securely shut all doors, and have your key and fobs to be programmed ready.
  2. Insert the key and turn to the “On” position. Press and hold the “LOCK” button for one second.
  3. Release the button and turn the key to the “Off” position. Repeat this process twice more.
  4. Turn the key to the “On” position and hold the “LOCK” button on the key fob for one second. Wait for the doors to lock and unlock automatically. Once the locks have cycled, your vehicle is in remote programming mode.
  5. Once again hold the “LOCK” button for one second. Once the locks cycle, the key fob has been successfully paired with your vehicle. Repeat the process with any additional fobs that need programming.
  6. Exit remote programming mode by turning the key to the “Off” position in the ignition.

Turn to Grappone Honda for Automotive Care

Now that you understand how to change the battery in a Honda key fob, you can always cruise with confidence in Tilton. While you are now a Honda key fob battery pro, other maintenance concerns may arise from time to time. When in need of dependable car care, turn to our Bow service center.

We can teach you how to change the battery in a Honda key fob or take care of major maintenance concerns. Our team is standing by to offer affordable maintenance and reliable care. Contact us to learn more about how to open a Honda key fob or any of the services we provide!

Our Service Specials

Complimentary Battery Test

Receive a complimentary battery test with your next service appointment at Grappone Honda!

Complimentary Multi-Point Inspection

Receive a complimentary multi-point inspection with your next service appointment at Grappone Honda!

Must present coupon at time of write up. Cannot be combined with any other offers, some restrictions apply. See dealer for details.

Complimentary Tire Pressure Check in our Service Drive

No appointment Needed
Available Monday – Friday  8:00 am – 4:00 pm

Must present coupon at time of write up. Cannot be combined with any other offers, some restrictions apply. See dealer for details.

Complimentary Alignment Check

Extend the life of your tires by making sure they wear evenly. Take advantage of our complimentary Alignment Check at Grappone Honda!

Must present coupon at time of purchase. Future purchases only. Cannot be combined with any other offer. Some restrictions apply, see dealer for details.

Lifetime Tire Rotations

Buy a set of four new tires and receive FREE tire rotations for the life of your new tires. Routine tire rotations ensure optimal:

• Performance
• Gas mileage
• Safety

Plus taxes and applicable fees. Prices may vary by model. Please present coupon attime of write-up. Valid only at Grappone Honda. Cannot be used with any otherapplicable offer. Hazardous waste fee if applicable. Coupon has no cash value.

Recent News From Grappone Honda

  • Best Honda Vehicles for Summer Driving in New Hampshire

    Summer in New Hampshire brings road trips, weekends at the lake, beach days, hiking trips, and longer drives throughout New England. For many drivers, it is also the season when vehicle needs become more noticeable. Passenger space, cargo flexibility, fuel efficiency, and comfort can all play a bigger role once summer plans begin. If you…

  • Should You Buy New or Pre-Owned in 2026?

    When shopping for your next vehicle, one of the most common questions is whether to buy new or pre-owned. Both options offer their own advantages, and the right choice depends on your priorities, driving habits, and long-term plans. So, should you buy new or pre-owned in 2026? There is no single correct answer. Some drivers…

  • Should You Trade In Your Car in 2026?

    If you are currently driving a vehicle you enjoy, trading it in may not be something you are actively thinking about. At the same time, many drivers in New Hampshire begin to evaluate their options each year based on vehicle condition, lifestyle changes, or evolving automotive needs. So the question becomes: should you trade in…

Get Directions

519 Route 3A, Bow, NH, 03304
Grappone Honda 43.174826, -71.5285391.