If your Mazda CX-5 key fob has stopped responding or you are seeing a low battery warning on the dashboard, replacing the battery is usually all you need. This guide covers the correct battery type, size, compatibility, symptoms of a weak battery, pricing, and detailed information for every Mazda CX-5 model year from 2014 to 2025.
- Mazda CX-5 Key Fob Battery Type
- What battery does a Mazda CX-5 key fob use
- Mazda CX-5 Key Battery By Year (2014-2025)
- 2014 Mazda CX-5 Car Key Battery
- 2015 Mazda CX-5 Car Key Battery
- 2016 Mazda CX-5 Key Fob Battery
- 2017 Mazda CX-5 Car Key Battery
- 2018 Mazda CX-5 Car Key Battery
- 2019-2021 Mazda CX-5 Key Battery
- 2022-2025 Mazda CX-5 Key Battery
- Signs your Mazda CX-5 key battery is low
- Can you start a Mazda CX-5 with a dead key battery
- Mazda CX-5 Key Fob Battery Life
- Mazda CX-5 Car Key Battery Price
- FAQ
- Author
Mazda CX-5 Key Fob Battery Type
| Mazda CX-5 Year | Key Type | Battery | Quantity | Notes |
|---|---|---|---|---|
| 2014 CX-5 | Smart Key | CR2032 | 1 | Early-gen Mazda smart fob |
| 2015 CX-5 | Smart Key | CR2032 | 1 | Same housing as 2014 |
| 2016 CX-5 | Smart Key | CR2032 | 1 | Popular search: Mazda CX 5 2016 car key battery |
| 2017 CX-5 | Smart or Proximity Key | CR2032 | 1 | Newer body style |
| 2018 CX-5 | Smart or Proximity Key | CR2032 | 1 | Identical internal module |
| 2019 CX-5 | Proximity Key | CR2032 | 1 | One CR2032 coin cell |
| 2020 CX-5 | Proximity Key | CR2032 | 1 | No changes to battery type |
| 2021 CX-5 | Smart Key | CR2032 | 1 | Updated exterior shell |
| 2022 CX-5 | Smart Key | CR2032 | 1 | Works with all CR2032 brands |
| 2023 CX-5 | Proximity Key | CR2032 | 1 | High-efficiency 3V battery |
| 2024 CX-5 | Proximity Key | CR2032 | 1 | Standard Mazda fob battery |
| 2025 CX-5 | Smart Key | CR2032 | 1 | Same Mazda key platform |
What battery does a Mazda CX-5 key fob use
All Mazda CX-5 models use a CR2032 3V coin cell, regardless of trim or year.
If you’re searching for battery Mazda CX-5 key fob, Mazda CX-5 key battery type or what battery does Mazda CX-5 key fob use, the answer is always the same: CR2032.
It only takes one battery per key fob, and any major brand works: Panasonic, Duracell, Energizer, Sony, Maxell, etc.
Mazda CX-5 Key Battery By Year (2014-2025)
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2014 Mazda CX-5 Car Key Battery
Uses a first-gen Mazda smart key with CR2032.
2015 Mazda CX-5 Car Key Battery
Same key design as 2014, still powered by CR2032.
2016 Mazda CX-5 Key Fob Battery
If you’re searching for Mazda CX 5 2016 car key battery or 2016 CX-5 key battery replacement, it’s CR2032.
2017 Mazda CX-5 Car Key Battery
Mazda changed the key shell, but the internal battery remains CR2032.
2018 Mazda CX-5 Car Key Battery
Still uses a single CR2032 coin cell.
2019-2021 Mazda CX-5 Key Battery
All proximity keys from these years use CR2032.
2022-2025 Mazda CX-5 Key Battery
Updated fob design, same CR2032 3V battery.
Signs your Mazda CX-5 key battery is low
If you see a Mazda CX-5 key battery low warning, or the fob becomes unresponsive, these are the usual symptoms:
- reduced range
- delayed lock-unlock response
- blinking or weak LED
- dashboard message “Key battery low”
- need to press buttons multiple times
If you’re dealing with a Mazda CX-5 key battery dead situation, the car will still start using the physical backup method described below.
Can you start a Mazda CX-5 with a dead key battery
Yes.
If your key battery is completely dead, Mazda still allows engine start:
- Press the brake.
- Hold the key fob directly against the Start button.
- Press the Start button again.
Even with a dead battery, the proximity chip has enough passive signal to authenticate.
Mazda CX-5 Key Fob Battery Life
Average lifespan: 1 to 2 years.
Factors affecting longevity:
- cold climate
- frequent lock-unlock cycles
- weak or cheap coin cells
- leaving the fob near electronics
- storing the key too close to the vehicle
Premium batteries (Panasonic, Duracell, Varta) usually last the longest.
Mazda CX-5 Car Key Battery Price
Typical price for a CR2032 coin cell:
- 2 to 6 dollars per battery when bought online
- 8 to 20 dollars if replaced at a dealership
- 5 to 15 dollars at retail stores (Walmart, Target, AutoZone)
If you search for Mazda CX 5 car key battery buy, online marketplaces usually offer the best price.
Mazda CX-5 – OEM key fob part numbers
As with other Mazda models, the Mazda CX-5 does not have an OEM number for the battery itself. The battery is a standard CR-series coin cell (CR2025 or CR2032), while OEM numbers refer to the complete key fob.
Common OEM smart key part numbers for the Mazda CX-5 by model year:
- 2017-2019 Mazda CX-5 smart key – OEM part number TKY6-67-5DY, battery CR2025
- 2020-2023 Mazda CX-5 genuine smart remote key – OEM part number TAYS-67-5DYB, battery CR2032
- Some 2021+ CX-5 and CX-9 shared smart key variants – part numbers like DFV2-67-5RY A and TAYJ-67-5DYB are also used, depending on market and trim
In practice, if your CX-5 has a modern proximity smart key with push-button start, it almost always uses a CR2032 battery, even if the OEM part number of the shell or board is different.
FAQ
All Mazda CX-5 key fobs use a CR2032 3V coin cell battery for every model year from 2014 to 2025.
Each Mazda CX-5 key fob uses one CR2032 battery.
This warning appears when the CR2032 battery is nearly depleted. You may also notice a reduced range or delayed button response.
Yes. Press the brake, hold the key fob against the Start button, and press Start again. The RFID chip operates even with a dead battery.
Typical battery life is 1–2 years depending on usage and climate.
A CR2032 battery typically costs 2–6 USD online, 5–15 USD in stores, and 8–20 USD at dealerships with installation.
No. All trims (Sport, Touring, Grand Touring, Signature, etc.) use the same CR2032 battery.
All Mazda CX-5 models from 2014 through 2025 use the CR2032 battery.
