Mazda2 Hybrid key fob battery (2022 on): CR2032 or CR2450
It depends on the key: key without smart entry & start system takes one CR2032; key with smart entry & start system takes one CR2450.
key without smart entry & start system
CR2032× 13V lithium coin cell
Also sold as DL2032, ECR2032, KECR2032, 5004LC · CR2032 details
Source: Mazda Mazda2 owner's manual
key with smart entry & start system
CR2450× 13V lithium coin cell
Also sold as DL2450, 5029LC, KECR2450, CR2450N · CR2450 details
Source: Mazda Mazda2 owner's manual
Before you swap it
- A CR2032 is 3.2 mm thick. CR2016 and CR2025 look the same from the front, but they aren't the same cell, and a thinner one can rattle or lose contact.
- Keep the old cell until the new one works. If the car still won't respond, the new cell is usually in the wrong way up.
Quick answers
Which battery goes in the Mazda2 Hybrid key (2022 on)?
Key without smart entry & start system: one CR2032 3V lithium coin cell. key with smart entry & start system: one CR2450 3V lithium coin cell.
Is DL2032 the same as CR2032?
Yes. DL2032 is CR2032, and DL2450 is CR2450: same cells, other names.
Will a CR2025 fit instead of a CR2032?
No. It's the same 20 mm width but 2.5 mm thick, against 3.2 mm for a CR2032. Use a CR2032.