Mazda is a Japanese carmaker. Currently, the company produces over a million vehicles a year, the majority of which use key fob remotes. If you find yourself with a non-working key fob, maybe it’s time to change its battery. Luckily, this can be done at home, for cheap.
Right below, you can find your key fob by clicking on your Mazda model. This will take you to a full guide on DIY battery replacement for that model. Scroll down to see a chart with all of the key fob types, their years, and the batteries they take. All the way down, you can find full video tutorials for each key fob type Mazda has to offer.
Mazda Sedan & Hatchback Models
Mazda Sports Car Models
Mazda Crossover & SUV Models
Mazda Minivan & Wagon Models
Mazda Truck Models
Key Fob Remotes
- Smart Key – Battery: CR2025
- Flip Key – Battery: CR1620
- Rectangular Key – Battery: CR2025
- Rounded Key – Battery: CR2025
- Square Key – Battery: CR2032
| PICTURE | KEY | YEARS | BUY BATTERY |
 | Smart | 2009 – Present | CR2025 Check on Amazon |
 | Flip | 2006 – 2015 | CR1620 Check on Amazon |
 | Rectangular | 2003 – 2008 | CR2025 Check on Amazon |
 | Rounded | 2003 – 2005 | CR2025 Check on Amazon |
 | Square | 1998 – 2009 | CR2032 Check on Amazon |
How to change the battery in the smart Mazda key fob
- Energizer 2025 Lithium Coin Battery
- Delivers long-lasting, dependable performance in specialty devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games
- Holds power for up to 10 years in storage, ensuring you have Lithium Coin Batteries ready when you need them
How to change the battery in the flip Mazda key fob
- 2-Pack of CR1620 lithium coin cell batteries for small electronic devices
- Powers devices such as watches, calculators, sporting goods, games, medical devices, and more
- Long-lasting, reliable battery life; performs in extreme temperatures
How to change the battery in the rectangular Mazda key fob
- Energizer 2025 Lithium Coin Battery
- Delivers long-lasting, dependable performance in specialty devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games
- Holds power for up to 10 years in storage, ensuring you have Lithium Coin Batteries ready when you need them
How to change the battery in the rounded Mazda key fob
- Energizer 2025 Lithium Coin Battery
- Delivers long-lasting, dependable performance in specialty devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games
- Holds power for up to 10 years in storage, ensuring you have Lithium Coin Batteries ready when you need them
How to change the battery in the square Mazda key fob
- 4-pack of lithium coin cell batteries; CR2032 cell size
- 8-year leak-free shelf life, ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
- Replacement for BR2032, DL2032, and ECR2032
Frequently Asked Questions
What battery goes in my Mazda key?
The battery for your key depends on the type of key fob. Scroll up to the chart to see which one you have. The most common Mazda key batteries are 3v coin batteries like the: CR2025, CR2032, and CR1620.
Where can I buy Mazda key fob batteries?
For the best prices, you can buy these batteries on Amazon. The battery you need will ship right to your front door—no shopping around hardware stores required. Here are all of the batteries used in Mazda key fobs—just find what battery you need in the chart above and click a link to buy it on amazon: CR2025 battery, CR1620 battery, CR2032 battery.
How much does it cost to replace a Mazda car key?
If your battery died, it will only cost you a few bucks to order a new one and replace it at home. However, if you lost your key fob and need a new one, it can get pricey. Some Mazda keys must be programmed at a Mazda dealership. This process may cost a few hundred dollars depending on your specific key fob. Some Mazda key fobs can be programmed at home for free.
How do you change the battery in a 2016 Mazda key fob?
It depends on what key fob you have. Some years have many different key fobs in use at the same time, there is no one correct answer. See our table above with pictures of every fob type to find your specific device. If you have a 2016 Mazda, you most likely are using the “smart” key fob. This uses a CR2025 battery. Scroll up to see a full video tutorial on the “smart” key DIY battery replacement.