BMW Coding Service- Carlos Diaz demonstrates two separate speed warnings. The first warning is the one you set in the iDrive menu, and alerts you in yellow at whatever speed you specify. This one was set for 63mph(Manufactured as US spec car…the kph speedo is aftermarket). The second alert is set for 75mph(not adjustable), and displays in red. When you press the instrument cluster warning button, the message goes away, and comes back at the same interval as that annoying low fuel warning.
Find out more at https://www.facebook.com/bmw.coding.service