2001-2005 Lexus IS 300

ECM Reflashing (IS300 2001-2005)
If you’ve lost all working master keys to your car, you cannot program additional keys by the on-board programming method. A working master key is needed to open the programming mode. You must have the Engine Control Module (ECM) re-flashed or reset.
Non-Remote Transponder Key (IS300 2001-2005)
You are purchasing an UNCUT Non-Remote Transponder Key. The Key must be cut before it will operate all of the locks on your vehicle – MAKE KEY CUTTING CHOICE ON NEXT SCREEN. Once the Key has been programmed into the car, it will start the vehicle.
Remote Head Key (IS300 2001-2005)
You are purchasing an UNCUT Remote Head Key. It must be cut before it will operate the locks on your vehicle – MAKE KEY CUTTING CHOICE ON NEXT SCREEN. Once the key has been programmed, it will start car. Must have working master key to program new keys.
Replacement Shell (IS300 2001-2005)
You are purchasing an empty Replacement Shell with an UNCUT blade for your vehicle – MAKE KEY CUTTING CHOICE ON NEXT SCREEN. Your existing electronics are to be transferred to this shell. There is no programming necessary.