See also:

BMW Maintenance System
The maintenance system directs you to required maintenance measures and thereby supports you in maintaining road safety and the operational reliability of the vehicle. ...

Programming
Programming 1. Memory buttons 2. LED Fixed-code hand-held transmitters 1. Switch on the ignition, refer to page 61. 2. Initial setup: Press both outer memory buttons 1 for approx. 20 seconds ...

Maintenance
The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. ...