How to Replace Battery in 2018 Mazda 3 Key Fob

Replacing the battery in your 2018 Mazda 3 key fob is a quick and easy process that can save you the hassle and expense of a trip to the dealership. This guide will walk you through the steps involved in changing the battery, helping you get back on the road with a fully functional key fob in no time.

Identifying the Right Battery for Your 2018 Mazda 3 Key Fob

Before you begin, it’s crucial to identify the correct battery type for your 2018 Mazda 3 key fob. The required battery is a CR2032 3-volt lithium battery. These are readily available at most electronics stores, pharmacies, and online retailers. Using the wrong type of battery can damage your key fob.

Step-by-Step Guide on How to Replace the Battery in Your 2018 Mazda 3 Key Fob

Here’s a detailed guide on How To Replace Battery In 2018 Mazda 3 Key Fob:

Locate the small release button: On the back of your Mazda 3 key fob, you’ll find a small release button. This button is usually located near the key ring attachment.
Release the auxiliary key: Press the release button and slide the auxiliary key out. This key is useful in emergencies, such as unlocking the car door manually if the key fob battery is dead. You can learn more about this and other helpful tips at 2018 mazda 3 key fob tricks.
Open the key fob: Using the tip of the auxiliary key or a small flat-head screwdriver, carefully pry open the key fob casing along the seam where the two halves meet. Be gentle to avoid damaging the plastic.
Remove the old battery: Gently pry out the old CR2032 battery. You can use your fingernail or the tip of the auxiliary key. Avoid puncturing the battery.
Insert the new battery: Insert the new CR2032 battery, making sure the positive (+) side is facing up. This is often marked on the battery itself. For other Mazda models like the CX-3, you can find similar instructions at 2018 mazda cx-3 key fob battery replacement.
Close the key fob: Align the two halves of the key fob casing and press them together until they snap shut. Ensure the casing is fully closed.
Test the key fob: Check all the buttons on your key fob to ensure they’re working correctly. If they are, you’ve successfully replaced the battery. If you’re having trouble with your Mazda 5 key fob, check out this resource for genuine replacements: mazda 5 key car remote fob genuine.

What if My Key Fob Still Doesn’t Work After Replacing the Battery?

If your key fob still doesn’t function correctly after replacing the battery, there might be other underlying issues. This could range from a faulty key fob to a problem with your car’s receiver. In such cases, consulting a qualified automotive locksmith or your Mazda dealership is recommended. Knowing how to start your Mazda 3 with a dead key fob can be helpful in these situations; learn more at how to start mazda 3 with dead key fob. If you own a CX-5 and need help replacing the key fob battery, this guide might be useful: replace key fob battery 2018 mazda cx 5.

Conclusion

Replacing the battery in your 2018 Mazda 3 key fob is a straightforward task that most car owners can handle themselves. By following this guide and using the correct battery type, you can keep your key fob functioning perfectly and avoid any unexpected lockouts.

FAQ

How often should I replace the battery in my Mazda 3 key fob? Typically, every 2-3 years.
What type of battery does the 2018 Mazda 3 key fob use? A CR2032 3-volt lithium battery.
Can I damage my key fob by using the wrong battery type? Yes, using an incorrect battery can potentially damage the key fob circuitry.

Common Situations & Questions:

Key fob not working at all: This could be due to a dead battery, a faulty key fob, or issues with your car’s receiver.
Key fob intermittently working: This could also point to a dying battery or a loose connection inside the key fob.
Key fob buttons sticking: This could be due to dirt or debris inside the key fob.

Other Helpful Resources on KEYFOBPROG:

Key Fob Programming for various Mazda models.
Troubleshooting common key fob issues.
Information on advanced key fob features.

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