The Lexus RX series vehicles are sold with keys the have remote control fobs built into the head of the key. The remote portion can be used as a convenience and safety feature to unlock the door, open the rear hatch, and signal help with a panic button. Over time, the cover, or “shell” degrafes, breaking away from the metal key blade. Alcatraz Locksmith has the equipment to cut the key, the diagnostic equipment to program the remote portion of the fob, and program the transponder chip in the head of the key. Please call, text, or email us in the Phoenix AZ area if you need this service. Thank you.