Lost your Prius key fob? Don't stress - this replacement remote is exactly what you need for your 2004-2009 Toyota Prius. Just make sure you check that FCC ID: MOZB31EG matches your old remote (this only works with the silver logo version, NOT the black one). The package comes with one 2+1 button key fob that looks and feels just like the original. Now here's the important part - you will need to get this programmed by a locksmith or dealership. If you already have one working key that starts your car, you might be able to DIY it by searching online for programming instructions. But if you've got zero working keys, you'll definitely need professional help. The build quality is solid though - they've pre-tested every remote to make sure it works perfectly. Fits Prius models from 2004 through 2009 like a glove. Just remember the part numbers: P/N 2584A-B31EG or 89994-47061. It's way cheaper than going through the dealer directly, and you get a 12-month warranty for peace of mind. Perfect solution if your old remote got damaged, lost, or just stopped working. Much more affordable than dealership prices while still giving you that factory-style performance.