Included for free with Smart Remote Key.
This is the key that slides into the remote and locks in place. This key enables you to connect your remote to the keychain. If the car battery or remote battery dies, this key is your only way into the vehicle. The toyota part number for the key is 69515-AC020. It works with smart key remotes that have the following FCC IDs: HYQ14ACX, HYQ14AAB, HYQ14AAF. The part numbers of the remotes this key works with are: 89904-0T060, 89904-35010, 89904-47230, 89904-47420, 89904-33181, 89904-06041, 89904-07030, 89904-48110, 89904-48100, 89904-47150, 89904-47420, 89904-0T020, and 89904-0T010.
Go to a local automotive locksmith to cut the new key to work on your vehicle.