Mazda CX-5 key fob battery
10 of the 14 model years listed for the Mazda CX-5 have a proven battery. The most common answer is CR2032. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2013Smart key
Not confirmed yet
- 2014-2015Smart key
Not confirmed yet
- 2016Smart key
CR2025
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2025 or equivalent).”
Find CR2025 on Amazon - 2017Smart key
CR2025
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2025 or equivalent).”
Find CR2025 on Amazon - 2018Smart key
CR2025
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2025 or equivalent).”
Find CR2025 on Amazon - 2019Smart key
CR2025
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2025 or equivalent).”
Find CR2025 on Amazon - 2020Smart key (Type A, with auxiliary key slot)
CR2025
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Type A: Use CR2025 or an equivalent.”
Find CR2025 on Amazon - 2020Smart key (Type B, lower/upper cover)
CR2032
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Type B: Use CR2032 or an equivalent.”
Find CR2032 on Amazon - 2021Smart key
CR2032
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2032 or equivalent).”
Find CR2032 on Amazon - 2022Smart key
CR2032
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2032 or equivalent).”
Find CR2032 on Amazon - 2023Smart key
CR2032
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2032 or equivalent).”
Find CR2032 on Amazon - 2024Smart key
CR2032
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2032 or equivalent).”
Find CR2032 on Amazon - 2025Smart key
CR2032
Owner's manual: mazdausa.com (checked Nov 1, 2026)
Manual text: “Replace only with the same type battery (CR2032 or equivalent).”
Find CR2032 on Amazon - 2026Smart key
Not confirmed yet
Changing the battery
Smart key (push-button start)
- Most push-button fobs hide a metal backup key. Press or slide its catch and draw the key out first.
- Use the slot where the metal key sat. Twist, do not lever hard, and work along the seam until the halves separate.
- Note which side of the old coin cell faces up (usually the side with the writing), lift it out with a plastic tool, and press the new one in the same way.
- Snap the halves back together, slide the metal key home, and press each button, then try the start button from the driver's seat.
Mazda advanced keys usually have a knob or button that frees the auxiliary key; the cover lifts once the key is out.
A CR2025 is 20 mm across and 2.5 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
A CR2032 is 20 mm across and 3.2 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.