Having trouble with your 2021 Mazda CX-5 key fob? Before you schedule a trip to the dealership, there’s a good chance the culprit is simply a dead battery. Key fob batteries don’t last forever, and fortunately, replacing them is a quick and easy DIY project.
This guide will walk you through everything you need to know about your 2021 Mazda CX-5 key fob battery, from identifying signs of a dying battery to step-by-step replacement instructions.
Signs Your Mazda CX-5 Key Fob Battery Needs Replacing
How can you tell if your key fob battery is on its last legs? Here are a few telltale signs:
- Decreased Range: Are you finding yourself having to stand closer to your CX-5 to lock or unlock the doors? This is a common early indicator that your key fob battery is fading.
- Intermittent Functionality: Does your key fob work sometimes but not others? This inconsistent behavior suggests the battery is losing power and needs replacing.
- Warning Lights and Messages: Some Mazda CX-5 models will display a warning message on the dashboard, indicating “Key Fob Battery Low” when the battery is critically low.
What Battery Does a 2021 Mazda CX-5 Key Fob Take?
The 2021 Mazda CX-5 key fob uses a CR2032 battery. This type of battery is widely available at most drugstores, supermarkets, and online retailers like Amazon.
How to Replace Your 2021 Mazda CX-5 Key Fob Battery: A Step-by-Step Guide
Ready to tackle the replacement yourself? Here’s a straightforward guide:
- Locate the Key Fob Release Button: On the back of your key fob, you’ll find a small button.
- Release the Emergency Key: Press the button and slide the emergency key blade out of the fob.
- Open the Key Fob: Use the emergency key blade or a small flat-head screwdriver to gently pry open the key fob casing. Be careful not to damage the internal components.
- Remove the Old Battery: Carefully remove the old CR2032 battery from its compartment.
- Insert the New Battery: Place the new CR2032 battery into the compartment, ensuring the positive (+) side is facing up.
- Reassemble the Key Fob: Align the two halves of the key fob casing and press them together until you hear a click, indicating they’re securely closed.
- Reinsert the Emergency Key: Slide the emergency key blade back into its slot on the key fob.
- Test the Key Fob: Ensure everything is working correctly by locking and unlocking your CX-5, and trying other functions like remote start (if equipped).
Tips for Maintaining Your Mazda CX-5 Key Fob
- Avoid Extreme Temperatures: Extreme heat or cold can shorten the lifespan of your key fob battery.
- Don’t Drop Your Key Fob: Repeated drops and impacts can damage the internal battery and other components.
- Keep Your Key Fob Dry: While modern key fobs are somewhat water-resistant, prolonged exposure to moisture can cause damage.
Conclusion
Replacing your 2021 Mazda CX-5 Key Fob battery is a simple task that can save you time and money. By following this guide, you can easily replace the battery yourself and keep your Key Fob functioning smoothly.
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