Hy-Ko KC900 Fob Battery, 3 V Battery, CR1620 Battery, Lithium (Pack of 5)

Commonly used in Volkswagen, VW, Hyundai, Daewoo, Daihatsu, Fiat, Audi, Renault, Peugeot, Citroen and Ford keys, always replace the battery in the key even if dead to preserve settings, non-rechargeable.