Condition Based Servicing (CBS).
The intelligent maintenance system CBS permanently monitors oil levels and the degree of wear and tear on individual components of your BMW. It also checks the time/mileage recommendations for fixed services and it analyses this data and tells you when a service is next due.
Data can be checked at a glance on your Info Display, which automatically gives you four weeks' notice. The iDrive Control Display gives you exact information on which component needs a check, so you can plan your service appointments well in advance and avoid any unnecessary maintenance work. CBS information can also be accessed through non-iDrive models.
Watch the animation above which will guide you through this process.