See also:

Service booklet
Perform maintenance work at the service center, and record the work in the service booklet. The entries are proof of regular maintenance. ...

For the 530i, 535i, 550i, 525d, 530d and 535d: check oil level
The concept The oil level is monitored electronically and displayed on the Control Display. Requirements ▷ The engine must be running and warm after the vehicle has been driven for at lea ...

Calendar
Displaying calendarAppointments from the last 20 days and the next 50 days can be displayed. 1.  "Office" 2.  "Calendar" Appointments of the current day are displayed. ...