Rockingham Honda

How to Open Your Honda Key Fob & Replace the Battery

Key with key fob in hand

Your Honda key fob provides many convenient features and functions, such as locking and unlocking your car doors, remotely starting the engine, activating memory seat settings, and more. But at some point, you’ll find that you’ll need to replace the Honda key fob battery. While the service team at Rockingham Honda can change the battery for you, there may be times when you prefer to do it yourself. This Honda key fob battery replacement guide will walk you through the steps and get you back on the road in Methuen with a fully functioning key fob.

Choosing the Right Honda Key Fob Battery

Most key fobs that come with your new Honda car, truck, or SUV will use a flat, circular 3-volt battery These batteries can be found at just about any Haverhill-area hardware store. The Parts Center at Rockingham Honda always has Honda key fob batteries in stock, as well. For your convenience, you can order a Honda key battery from us online, and we’ll have it ready for you to pick up in Salem. 

Honda Key Battery Replacement

Unsure how to change a Honda key fob battery? Follow these steps, which show how to open a Honda key fob, how to remove/replace the battery, and how to put the key fob back together.

  1. Press and slide the button that releases the metal key, and then slide the key out.
  2. Use the key or a small flathead screwdriver to gently pry the key fob open. 
  3. Press your thumb down right above the battery to hold the fob together so the contents and external buttons don’t fall out. 
  4. Remove the dead battery, taking note of the positive and negative sides in order to install the new battery correctly. Don’t touch the terminals on the new battery. The oils on your skin can cause corrosion, which shortens battery life.
  5. Insert the new battery in the same position as the old one. Use the positive (+) and negative (-) marks inside the key fob as a guide.
  6. Align the two halves of the key fob and gently apply pressure until they snap back together. 

Some Honda key fobs have a screw that holds the two halves together instead of a button. If this is the case, use a small flathead screwdriver to remove the screw, and then follow the steps above to replace the battery.

How to Program a Honda Key

Now that you know how to change a Honda key battery, you’ll want to know how to program it. The following steps demonstrate how to program a Honda key.

  1. Enter the vehicle, make sure all the doors are shut, and have your key and the fobs to be programmed ready. 
  2. Insert the key and turn to the “On” position. Then, press and hold the “LOCK” on the key fob 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, hold the “LOCK” button on the key fob for one second, and wait for the doors to lock and unlock automatically. Once the locks have cycled, your vehicle will be in remote programming mode.
  5. Once again hold the “LOCK” button on the key fob for one second. The locks will cycle, and the key fob will be paired with your vehicle. Repeat the process with any additional fobs that need programming. 
  6. Exit the programming mode by turning the key to the “Off” position in the ignition.

Rockingham Honda is Your Source for All Honda Parts & Service Needs

Whether you want to know how to change a Honda key battery, how to jump start a car, or how to remove a car battery, the parts and service professionals at Rockingham Honda are here to help. Make sure to check out our parts specials and current service coupons to take advantage of some of the best deals in the Lawrence area. If you have any questions or need a Honda key fob battery replacement, please contact our Parts Center.

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