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. ...

Instrument cluster
1.Speedometer 135i: with fuel gauge 2.  Indicator lamps for turn signals 3.  Indicator and warning lamps 4.  Tachometer 5.  Fuel gauge 135i: engine oil temperature 6.  ...

General information
The interior lamps, footwell lamps, entry lamps and courtesy lamps are controlled automatically. The brightness of some of these lamps is influenced by the thumbwheel for the instrument lightin ...