How to Reset TPM...
 

Here is a site I ran accross that resets all BMW Tire Pressure Monitors. Since this seems to be a recurring problem i looked for a solution in addressing this.

http://www.brakeandfrontend.com/Article/80507/tpms_update_bmw_systems.aspx

if you have iDrive go to Information > vehicle and tires, on the top menu you will see TPM once you in there click on reset and if all your tire pressures are good it will be green.

*In the article you referenced in the second paragraph it says "If you are to take one thing away from this article, it is this: The owner’s manual has all of the TPMS reset procedures for that specific vehicle."

once you hit reset, move the vehicle, otherwise it won't go green.. I made that mistake once... sat there for 5+ minutes.

On my 535, you could reset the TPMS on your idrive and drive the car for at least a minute. Although mine would reset in a few seconds.

you must drive for a short time.

Don't feel bad. I did the same thing once (forgot to drive a bit) and a few months later did it a second time... Never did that crap (or had any gray hair) before we had the kids...