See also:

Displays in the instrument cluster
Desired speed ▷ The marking lights up in green: the system is active. ▷ The marking lights up in orange: the system has been interrupted. ▷ The marking does not light up: ...

Exterior
Visual updates for 2012 affect the 128i more than the 135i. The 128i carries revised circular fog lamps, replacing last year's horizontal lamps. Outboard of the fog lights, vertical slats improve ...

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