I found this video on the net and i wanted to upload it.. It's NOT MINE! However, it's very cool.. A guy managed to start his Toyota Avalon with his original smart key... He didn't mentioned much information about how it works.. But, he said that he designed a small circuit for that job... All what he have to do is to press the trunk release button for few seconds... I guess the same method will work with all newer Toyota/Lexus vehicles...