Ever been stuck trying to change your car key fob battery? It can be surprisingly simple once you know how to open it! This guide will walk you through the process of opening your car key fob safely and easily, so you can replace the battery and get back on the road. Many modern car keys are designed with a replaceable battery, and you can often handle this task yourself with just a few basic tools.
Step 1: Locate and Remove the Emergency Key
Many key fobs contain a physical, or emergency, key that is hidden within the fob itself. This key is designed to unlock your car door manually if the battery dies completely. The first step to opening your key fob is to remove this emergency key if your fob has one.
Look for a button or latch, often a different color from the main fob body. Press or slide this release to detach the emergency key. For example, in the image below, you can see the silver portion of this Dodge key fob is the removable emergency key.
On the bottom of the key fob, the silver or gray part often indicates the presence of a removable emergency key. Removing this key is usually the first step to accessing the internal components of your key fob.
Step 2: Identify the Opening Point on Your Key Fob
Once the emergency key is removed (if applicable), you need to find the point where you can open the key fob casing. Look closely at the edges of the fob for a small notch, seam, or slot. This is where you’ll insert a tool to gently pry the two halves of the fob apart.
Often, this opening point is indicated by a subtle line or a small indentation on the fob’s casing. The image below highlights a typical location where you might find this opening point.
This image shows a key fob with the emergency key removed, and an arrow pointing to the seam where you will need to pry open the casing to access the battery compartment.
Step 3: Carefully Pry Open the Key Fob
With the emergency key removed and the opening point identified, the next step is to gently pry the key fob open. You’ll need a small, flat tool for this. A small screwdriver, a plastic trim removal tool, or even a thin coin can work.
Insert the edge of your chosen tool into the notch or seam you located in the previous step. Apply gentle but firm pressure to start separating the two halves of the key fob. Be patient and work your way around the seam, gently prying as you go. The latches holding the fob together can be tight, especially the first time it’s opened.
As shown in this image, use a small screwdriver or similar tool to carefully pry apart the key fob casing at the designated seam. Work gently to avoid damaging the plastic.
Important Note: The first time you open your key fob, it might be a bit difficult. Work slowly and carefully around the fob, gently inserting your tool and lifting until the case begins to separate. Avoid using excessive force, which could damage the fob. Once you have separated the front and back pieces, you’ll have access to the battery!
Replacing the Battery and Reassembling Your Key Fob
Once the key fob is open, you’ll see the battery. Take note of how the battery is positioned before removing it – specifically, note the positive (+) and negative (-) orientation. Replace the old battery with a new battery of the same type. These are typically small, round coin cell batteries.
This image displays the inside of an opened key fob, revealing the battery and battery compartment. Ensure you note the battery orientation before removing and replacing it.
To reassemble the key fob, align the two halves of the casing and press them firmly back together until they snap shut. You should hear a click, indicating that the fob is securely closed. Finally, reinsert the emergency key if you removed it earlier. Test the key fob to ensure it’s working correctly.
By following these simple steps, you can easily open your car key fob and replace the battery yourself, saving time and potentially money. If you’re still having trouble, remember many resources, including instructional videos, are available online for visual guidance.
