For BMW 3 Series (e90,92,93) from 2004 -2013 .
In the US the rear fog lamp button has been deactivated / mechanically blocked. But the bulbs for the rear fog lamps are fitted in the tail light housings and the icon can be displayed in the instrument cluster.

- Online some say you can pop off the cover ( as what we had read ) and the button is hiding underneath. This is not the cas as you will see. This was the first time we had done this so excuse the hackery. This was our bosses car by the way. Additionally some footage was lost of us cutting the plastic tabs for the button. My apologies.