2020 Mazda Cx 5 Key Fob Battery: A Comprehensive Guide

Used NEW OEM 2013 2014 2015 2016 2017 MAZDA CX5 SMART KEY FOB REMOTE
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When it comes to the convenience of modern vehicles, keyless entry systems have become an integral part of the driving experience. The 2020 Mazda CX 5 is no exception, offering a high-tech key fob that provides easy access to your vehicle. However, like any battery-powered device, the key fob’s battery will eventually need replacing. In this article, we will explore how to change the key fob battery in your 2020 Mazda CX 5, ensuring that you never get locked out of your vehicle unexpectedly.

Step-by-Step Guide

Step 1: Gather the Necessary Tools

Before you start, make sure you have all the tools you’ll need. These include a small flathead screwdriver and a replacement CR2025 battery, which can be easily found at most electronic or automotive stores.

Step 2: Locate the Key Fob

The key fob for the 2020 Mazda CX 5 is a small rectangular device with buttons for lock, unlock, and trunk release. It also features a small key blade that can be used to manually unlock the vehicle if needed.

Step 3: Open the Key Fob

Use the small flathead screwdriver to gently pry open the key fob. Start at the small gap near the key blade and carefully work your way around the edges until the key fob opens. Be careful not to apply too much pressure, as this may damage the key fob.

Step 4: Remove the Old Battery

Once the key fob is open, you will see the battery compartment. Use the screwdriver to carefully remove the old battery, taking note of its orientation. It is essential to insert the new battery in the correct direction to ensure proper functionality.

Step 5: Insert the New Battery

Take the replacement CR2025 battery and insert it into the battery compartment, again paying attention to the correct orientation. Ensure that the battery is securely in place before proceeding.

Step 6: Close the Key Fob

Carefully align the two halves of the key fob and gently press them together until they snap back into place. Take care to ensure that all edges are aligned correctly to avoid any gaps or loose parts.

Step 7: Test the Key Fob

Now that the battery has been replaced, it’s time to test the key fob. Stand near your vehicle and press the lock and unlock buttons to verify that the key fob is working correctly.

Step 8: Dispose of the Old Battery

Properly dispose of the old battery by taking it to a recycling center or following the guidelines in your local area. It’s important to dispose of batteries responsibly to minimize environmental impact.


Changing the key fob battery in your 2020 Mazda CX 5 is a simple process that can be done at home with minimal tools. By following these steps, you can ensure that your key fob remains functional, providing you with easy access to your vehicle. Remember to always use caution when handling batteries and dispose of them properly. With a new battery in your key fob, you can continue to enjoy the convenience and peace of mind that the keyless entry system brings to your Mazda CX 5.