To reset brake pad (lining) indicator:
1. Turn ignition to Terminal 15. Terminal 15 is ignition on engine off. (push start button so all warning lights illuminate on instrument panel).
2. Close all doors.
3. Press and hold the Instrument Cluster Set/Reset button
for 10 seconds.
4. The upper display in the Instrument Cluster will be
illuminated with a Service Item (example: An oil can is the
designation for Oil Service). The lower display in the
Instrument Cluster will indicate the remaining time or
mileage left for that Service Item.
Pressing the button repeatedly will allow the display to
scroll through all of the Condition Based Service Items.
5.When brake linning indiator appears in message center release trip reset button.
 6.Reset message will appear, push once more. System is now reset. If system will not reset. Check all brake pad wear sensors. A slightly worn sensor may cause warning lamp to maintain service needed status. See this article for sensor testing: Brake pad wear sensor testing BMW 5 Series E60 https://wiki.bentleypublishers.com/x/AoD4Aw | 
