“My key fob has completely stopped working and I can’t get anything done with it anymore. My car will neither lock nor unlock. I’m positive the battery has died. I need help on how to replace a Mazda CX-5 key fob battery.“
If this is you right now, then you’re in luck because this post shows you the step-by-step guide on how to change your advanced keyless entry system Mazda CX-5 Key fob battery. Keep reading to find out!
A Little About Mazda CX-5 Key Fob
Heir to the proud lineage that includes the Mazda Tribute and CX-7—the CX-5 is a pioneer of Mazda design philosophy. This compact crossover was born in 2012 and was the first Mazda to feature the KODO – Soul of Motion design language.
The concept of this design focuses on recreating the form of an animal that’s ready to pounce—think potential energy. This design philosophy is what sets Mazda apart from the pack and is the reason for the CX-5’s elusive visual style.
Equally stylish is the smart key the vehicle comes with. This key fob lets you lock, unlock, or panic your Mazda CX-5 remotely. But what’s really “smart” about it is that you can unlock or start your vehicle while the key is in your pocket. Your CX-5 will detect the proximity of your smart key and grant you access. When your battery dies, simply slide out the handy internal key to get going.
Speaking of your battery dying, let’s get into why you’re really here—to change the internal battery in your CX-5 key fob!
In this guide, we will show you everything you need to know to get your battery changed so you can get back out on the road in no time.
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How to Replace the Mazda CX-5 2013-2019 Smart Key Fob Battery
You can easily open this smart key fob to replace the CR2025 battery inside. Scroll down to see a full video tutorial or read on for a step-by-step guide on how to replace a Mazda CX-5 key fob battery.
What you will need:
• 1x CR2025 battery
• Flat-head screwdriver
How to Change the Battery in Your Mazda CX-5 Smart Key Fob
Total Time: 3 minutes
1. Press switch, pull key
First, flip your smart key over and find the small switch (aka auxiliary key button) on the back. Push this switch down, while pulling on the silver key ring hole to release the auxiliary key.
2. Twist screwdriver in both grooves
From here, you will need your flathead screwdriver. Locate the grooves on the left and right walls inside the keyhole. Insert your screwdriver into a groove and twist to loosen that side. Repeat for the groove on the other side. This will begin to separate the two halves of the key fob.
3. Twist screwdriver, separate key halves
Now, there should be a separation between the two halves running down the seams on the long sides of the smart key. Insert your flat head screwdriver into these seams, twist, and work your way down each side until you can separate the two halves of the key fob.
4. Remove plastic cover, take out battery
Inside, you will find a plastic disc; remove this battery cover with your fingers to expose the battery. You can simply go ahead and remove the CR2025 battery with your fingers now.
5. Put new CR2025 battery, reassemble key
Next, place your new battery in the compartment with the positive pole facing up. Finally, put the plastic disc back on top of the new battery, reattach the two halves of the key fob back together, and insert your metal auxiliary key.
Good job! Battery successfully removed and replaced without getting damaged.
This is the battery for this CX-5 key fob:
Frequently Asked Questions
What battery does a Mazda CX-5 key fob use?
A lot of Mazda CX-5 key fob models use a CR2025 battery.
Can you start a Mazda CX-5 with a dead key fob?
Yes, you can. Dead batteries don’t necessarily mean dead cars. So, don’t panic. The CX-5 comes with an inbuilt sensor that enables you to start your car even with a dead key fob battery.
Follow these steps to learn how:
Flip over your key fob to find the small latch on its back.
Pull down on this latch to release the traditional key from the fob
Now insert the keyhole by the driver’s side to unlock the door manually.
Can I replace the Mazda CX-5 key fob battery myself?
Of course, you can. Gently scroll up to find the easy step-by-step guide on how to replace Mazda CX-5 key fob battery along with a quick video tutorial. Remember to always verify that your key fob battery is working perfectly after replacing it.
Finally, while replacing your key fob battery yourself is possible, care must be taken to prevent permanent damage commonly caused by improper reassembling or dismantling. Hence, ensure you read the vehicle manual correctly and follow the above steps duly for a safe Mazda CX-5 key fob battery replacement.