you're right about "mated".. mine got "un-mated" because of a dead battery.. It wouldnt open/close the car but I can use it to start...

i say call the dealer.. programming is probably needed. No worries -- you're under warranty.

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2011 X5 3.5D - Platinum Gray / Black Leather / Dark Bamboo, Sports w/ 20's, Adaptive Drive, Comfort Seats, Cold Weather, Premium, Sound, Rear Climate, Technology, Comfort Access, Auto High Beams, Heated Rear Seats, Running Boards, Roof Rails w/Rola Crossbars, Space-saver Tire, Moonroof visor, P/Q Brake Pads, Cargo Mat, Weathertech All Weather Mats, Draw-Tite Hitch.

2010 X5 4.8i - Lemon'd 12/2010.
2006 X5 4.4i - Sold 11/2009.
2004 X5 4.4i - Stolen 8/2005. R.I.P.