First off, I've spent hours searching and sifting through bs on this site and still couldn't find the answer as to if this could be done on a 2012 model. This is to give others a definite answer. So keep the bs out, start your own thread.
No boobie pics , or just make a canister or use the spare tire, or buy aftermarket, etc...
To get the light to turn off, you get to the TPMS plug behind the stereo. Cut the blue wire, attach the wire harness side in-line with the red wire with white stripe. I taped up the other end of the blue wire, reinstalled in the wire loom, secured it with tape, and plugged it back in. The system is still on, but the signal to illuminate the tpms is disabled.
Attempt at your own risk.
From the info I gathered, the blue wire gong into the wire harness is the signal to the ecu/gauge cluster. The red/white wire supplies a 5v dc + to turn the light off. So it doesn't matter what the tpms computer is reading, the light is disabled with the system still on. Its been over a week since I did this and no problems whatsoever. (edited 7/2/13)
Stereo and surround removed for easier access.
Behind where the climate controls were, you can see the blue TPMS box, which the plug has been already removed.
The blue wire is cut, the harness side is connected in-line with the red/white wire. I later taped the other side of the blue wire coming from the plug. Reinstall plug into tpms box and reinstall everything.
I've received so much help from this site, hopefully this helps out someone else! Good luck!