Hi All, I had been looking for the same thing, all I found on the web are instructions for American models which do not work for Australian models. Finally I got the method that does from a Toyota dealer and it worked on My Vienta (1999) and Avalon (2000 & 2001). So here it is -Put the key in the ignition -Turn Key to ACC -switch from ACC to ON (without cranking the engine) and back three times. This should be done relatively quickly (within a few seconds) - The security light on the dashboard will illuminate on the third time into the ON position and will stay on (this is the little red LED usually flashing when you remove the key from the ignition). This indicates the programming mode is started. -Once the light is ON press the button on each of the remotes you have (including the ones already programmed). Each time you press one of the remotes the indicators should flash. -Once the security light turns off the programming mode is terminated. NOTE: this operation clears the cars memory from all pre-coded remotes, hence the need to press the button on the old remotes too. I hope this helps SpaceBeast
