Lost my owners manual and cant remember how

go to your radio, there are a few preset buttons there, go to the one with the clock or scroll around there!

it depends if you have idrive or not, but i think its under Data in the business radio setup!

Hit your "BC" left stalk button until your time is displayed on your dash display (right at the line below your odometer). It should rotate like... time - temperature - mpg - range - ave speed - (and back to) time....etc.

Then, turn the right push-button on the dash and hold... the clock will fast-forward/reverse.

If you pushed that button instead of turning, you will be able to change 12hr/24hr settings. But remember, all these must be done with your time appearing in the central dash display.

NB: Hmm... I've got the feeling I've answered this before...