Changing "Compass Zone" on the interior rearview mirror !?

[X5 Meister]

Page 55 of the 2005 owner's manual describes an adjustment button on the bottom edge of the interior rearview mirror that changes the "compass zone" of the rearview mirror. The following page shows a map of the various compass zones. Does anyone have such a button because I can't find anything to "press" on my mirror???

[China Man]

it's located to the right of the red "clown nose" on the bottom of your mirror. It's actually recessed into the mirror so you can't see it unless you look underneath. It's a small hole about as large as a fine tip ballpoint pen ...

[X5 Meister]

I saw the hole and tried to stick a pen in it but nothing happened. How do you activate it? By the way the manual shows it to be on the left of the red light!

Follow-up: Use a paperclip. Works great. Press gently.