Originally Posted by riknchar

The right key card for your Lexus depends on what FCC ID you're seeing on the back of your normal fob. From my research on my 2010 LS600hL, I found two potential Key Cards that would work. Lexus Part Number 89994-48142 was the first one - this card did not show as being compatible when I checked on www.LexusPartsNow.com, but several people said that one works just fine. Another key card part number I found did show that it was compatible, it's Lexus P/N 89994-48072. If you tell us what FCC ID number you see on the back of your normal Fob, we might be able to offer more specific advice (from others who have had success with one of the key fobs, who had the same FCC ID you have).