Droid 13 is correct. I was able to re-program our Smart Key and it works with both keys. My wife is delighted with this change; now she can open rear driver-side door without fishing for her key or opening driver's door and hitting the unlock switch. We both have advanced degrees but were reading the manual wrong, but we don't feel so stupid since our Toyota Guy said it couldn't be done. Thank you all and thank you GreenHybrid!