Lock Replacing the Smart Key Fob Battery The smart key fob uses a CR2477 coin cell battery. To replace the battery, please pinch the sides of the key fob firmly between fingers, and slide your fingernail or a thin plastic sheet from the bottom gap along the side slit of the key fob until the rear cover can be opened. Dispose of used batteries according to instructions and local laws. Please see the NIO website for details. Install the coin cell battery with the positive terminal facing down. After installing, align the battery's contacts, and then close the rear cover properly to ensure proper use of the key fob.
Caution When the key fob battery is low, its remote unlock feature may be affected. In this case, you can try to unlock the vehicle from a shorter distance. If it still doesn’t work, please use other methods (e.g. the mobile app or emergency key) to unlock the vehicle. 5