Where is the button for turning on & off the automatic highbeam headlight dipping if you get that option?

On the indicator stalk. It becomes a smaller split button adjacent to the BC one for the onboard computer.

Thanks for that, so we are back to what is button 7 used for?

Nope, 1 & 9 are assignable. I'm not giving up on this quest!

Wow, really? You got a pic of that in the X5?

Ok, got a thought, the rear electric rollerblind, where is that button?

And if you get the rear aircon and DVD rear system is there any overide buttons that might be used?

There is no rear electric rollerblind in the X5. No also to your other thoughts. Nice try though!

The Auto highbeam is not a button. When the headlights are on, you pull the highbeam stick a little in towards yourself and it will show "A" with the highbeam simple in the LCD in the instrument cluster. To keep them on, you pull the stick in until it "clicks".

How about a retrofit option considered by BMW for a front nightvision camera? That could be #7. And how about the side cameras and front camera which are already an option for the X5? wild guess.

If not, then how about the DTB-V (whatever it is) digital TV tuner, does that need a button?

How about something to do with towing. Is there a towing button in the X, because most cars that tow have a button?

For 1 and 9 it has to be something which is both on the left and right side and probably an accessory. #1 to control the left side and #9 to control the right side.