Yes, as long as the FCC numbers match. The 2005 xB uses a three button key fob remote with these numbers:
FCC: HYQ12BBX, P/N: 89742-52010, RSS-210.
If you find a combined fob and key which works for the Gen1, please post information here.
FCC: HYQ12BBX, P/N: 89742-52010, RSS-210.
If you find a combined fob and key which works for the Gen1, please post information here.