PROGRAMMING: This remote control car key fob replacement can be self-programmable with one original key. If you do not have an original key then you will need to have it programmed by an automotive locksmith or dealership. NOTE: The 2008 Toyota Avalon, can only programmed by a qualified locksmith.NOTE: 2 x 4 Button appearance. This keyless entry transmitter only works on regular key vehicles. Please make sure that all the information, appearance, and location of the remote key fob are consistent with our description and pictures.REPLACEMENT: For keyless entry remote Car key FCC ID: GQ43VT20T P/N:89742-07020 89742-AA040. Frequency:315Mhz. NOTE: Before purchasing, please check the information provided. If you don't know, check with your dealer to see if it will fit your vehicle.COMPATIBILITY With: With remote key fob replacement for Toyota Avalon 05-08 / Solara 04-08. For double-checking, you may check the vehicle fitment tool above and the description for an exact match.HIGH-QUALITY: Each remote fob key replacement comes with a battery and electronics. It's a 100% Brand New Keyless Fob Key Remote, ready to program, and fully pre-tested with professional tools before shipping.