Ri-key Security- 4 Button Replacement Key Keyless Remote Shell Pad Cover Fob Case for Toyota 4 Buttons - Lock, Unlock, Back Window, Panic This item is a case only. No electronic component or battery is included with this shell. See product description for a complete list of vehicles this part is compatible with. No programming required, Just sweep the electronic board and battery from your old case to this new one. Replace: HYQ1512Y, HYQ1512P, HYQ12BBX, HYQ12BAN