Is your 2006 Volvo S40 key fob not working as reliably as it used to? The most common culprit is a dead or dying battery. Fortunately, replacing the battery in your Volvo S40 key fob is a straightforward task you can easily do yourself, saving time and money compared to visiting a dealership. This guide will walk you through each step to replace your 2006 Volvo S40 Key Fob Battery quickly and efficiently.
What You’ll Need to Replace Your Key Fob Battery
Before you begin, gather these simple tools:
- Strong hands – While not technically a tool, a firm grip helps, but if needed you can use a lever.
- Small flat blade screwdriver (optional) – This can assist if you have difficulty opening the fob with your hands alone. A 5-level mortice key or even a coin can also work.
- New CR2025 3V Lithium battery – This is the specific battery type required for your 2006 Volvo S40 key fob. Ensure you purchase a fresh battery for optimal performance.
Step-by-Step Guide to Replacing Your 2006 Volvo S40 Key Fob Battery
Follow these steps to easily replace the battery in your Volvo S40 key fob:
Step 1: Remove the Corner Ring
The first step is to carefully remove the small corner ring attached to your Volvo S40 key fob. This ring needs to be detached to access the key fob casing. Be gentle but firm, as it might require a bit of force. It’s important to remove this ring to prevent damage to the plastic casing when opening the fob.
Step 2: Open the Key Fob Casing
Next, flip open the actual key blade as you would when starting your car. With the key blade flipped out, you’ll notice the lower section of the back panel is now accessible to be pulled off. Apply pressure in the direction indicated, usually away from the key blade hinge. You can use your fingernail, a small flat blade screwdriver, or even twist a coin in the slot to gently pry it open. Be cautious and work over a desk or table to avoid losing any parts, especially the battery once the case is open.
Volvo S40 key fob open with battery visible
Warning: Perform this step on a clear surface. When the back panel is removed, the battery might fall out. Keeping it over a desk ensures you don’t lose the battery and can quickly replace it.
Step 3: Replace the Old Battery with a New CR2025
Now that the key fob is open, you will see the CR2025 battery. Carefully remove the old battery. Take your new CR2025 battery and insert it in the same orientation as the old one was removed (usually positive side up). Ensure it is firmly seated in the battery compartment.
Tip: Consider using a permanent marker to write the replacement date or expiry date on the new battery. This will help you remember when you might need to replace it again in the future. Lithium-ion batteries like the CR2025 typically have a long shelf life, often exceeding 10 years, but marking the date can be a helpful reminder.
Step 4: Reassemble the Key Fob Casing
With the new battery in place, reassemble the key fob by aligning the back cover with the front casing. The cover usually lines up easiest if you align the corner edge with the ring attachment point first. Then, press firmly with your thumbs until the casing snaps back together securely.
Step 5: Reattach the Corner Ring
The final step is to reattach the small corner ring. This can be slightly tricky. You might find it helpful to use a tool like a 5-lever mortice key or a small screwdriver to gently prise the ring open slightly and hold it while you maneuver it back onto the key fob. Ensure the ring is securely attached.
By following these simple steps, you’ve successfully replaced the battery in your 2006 Volvo S40 key fob. Your key fob should now be functioning optimally again, ensuring you can remotely lock, unlock, and access your vehicle without issue.
