Citroën C3 Aircross key fob battery (2017–2019): CR1620 or CR2032
It depends on the key: key without Keyless Entry and Starting takes one CR1620; keyless Entry and Starting electronic key takes one CR2032.
Key without Keyless Entry and Starting
CR1620× 13V lithium coin cell
Also sold as DL1620, ECR1620, KECR1620, 5009LC · CR1620 details
Source: Citroën C3 Aircross handbook
Keyless Entry and Starting electronic key
CR2032× 13V lithium coin cell
Also sold as DL2032, ECR2032, KECR2032, 5004LC · CR2032 details
Source: Citroën C3 Aircross handbook
Before you swap it
- A CR1620 is 2 mm thick. CR1632 looks the same from the front, but it isn't the same cell, and a thinner one can rattle or lose contact.
- Car still ignoring the fob after a new cell? Check it went in the right way up. The + side usually faces the marking inside the case.
Quick answers
Which battery goes in the Citroën C3 Aircross key (2017–2019)?
Key without Keyless Entry and Starting: one CR1620 3V lithium coin cell. Keyless Entry and Starting electronic key: one CR2032 3V lithium coin cell.
Is DL1620 the same as CR1620?
Yes. DL1620 is CR1620, and DL2032 is CR2032: same cells, other names.
Will a CR1632 fit instead of a CR1620?
No. It's the same 16 mm width but 3.2 mm thick, against 2 mm for a CR1620. Use a CR1620.