How do you program key for gx470?

To program a key for a Lexus GX470, you'll typically need the original key or a working key to start the process. Insert the key into the ignition and turn it to the "On" position without starting the engine, then turn it back to "Off" and remove it. Repeat this cycle two more times, ending with the key in the "On" position on the third cycle. Within a few seconds, the key should be programmed, and the vehicle's security light will blink to indicate successful programming. For specific instructions or if you encounter issues, it’s advisable to consult the owner's manual or a professional locksmith.