How to Change the Battery in Honda Key Fob?

Changing the battery in a key fob regularly is important, just like any other battery-operated device. If your car key fob is unresponsive or can’t recognize your vehicle, it could mean the batteries are dead. To avoid getting locked out unexpectedly, knowing how to change the battery in a key fob is crucial.

Replacing a key fob battery is simpler than you may think, although the specific steps may differ depending on the manufacturer. However, if you’re in a rush or encountering difficulties, it may be best to seek assistance from an automotive locksmith. In general, however, you can usually change the battery in your car key.

Honda vehicles come with remote entry systems that provide convenient features such as locking and unlocking the car and activating a panic alarm if needed.

To detect a low battery in your keyless entry remote, you may experience a decrease in range and, eventually, unresponsiveness. Luckily, replacing your Honda key battery is a quick and simple process that can be completed in less than five minutes.

In five easy steps, you can replace the battery for your Honda remote entry fob.

The Anatomy of a Normal Key Fob

Let’s first understand the working and structure of key fobs before we proceed with the steps to replace car key batteries and do some automotive locksmith service on your own.

A key fob is a small device that works like a remote control. Like TV remotes, car remotes use microchips and antennae to receive signals. These components are present in most key fobs.

• RFID chip: The RFID (radio frequency identification) chip, present inside the casing of your fob, uses electromagnetic fields to detect objects associated with, such as, your car.
• Antenna: Modern car fobs have an internal and hidden antenna that emits frequencies from the RFID chip to locate the object.
• Buttons: Car fobs usually have buttons that activate the chip and antenna to send out a frequency.
• Plastic casing: The plastic case protects all of the internal parts of the fob.

The components of the car remote, other than the casing, require power from the fob battery to function properly. Therefore, replacing the battery when it runs low for the remote to work is important. Follow these steps to change the battery in your car key fob.

How to Change the Battery in a Honda Key Fob

1. Look at What Batteries You Need

To determine the type of battery used in your keyless entry remote, turn it upside down and check the writing on the back. If the writing is unclear or not readable, you can still find the battery type in the existing battery.

2. Open the Honda Key Fob

To open your keyless entry remote, use a jeweler’s screwdriver to remove the screw if it has one. Then, use a small flathead screwdriver to separate the two halves of the remote. Be careful not to apply too much pressure and damage the key.

3. Remove the Dead Battery

To properly install the new battery in your remote, take note of the position of the positive and negative sides of the old battery before removing it. Additionally, avoid touching the battery terminals with your fingers, as the oils in your skin can corrode the terminals and shorten the life of the remote.

4. Insert the New Battery

To ensure proper placement, install the new battery in the same spot as the old one. If you’re uncertain, locate the positive (+) and negative (-) indicators within your keyless entry fob.

5. Reconnect the Casing of the Honda Key Fob

Press the two halves of the fob together until you hear a snapping sound to align the remote.

Please test your remote control to make sure it is functioning correctly. If you have bought several batteries, please keep the extra ones in the package and attach them inside your Honda car’s glove compartment using tape.