SMC: Stepper Motor Controllers: Notes
WARNING: This page does not describe the selected car, but rather 46 other vehicles, including the 2008 BMW M5, 2008 BMW 650i, 2007 BMW Z4, 2007 BMW M6, and 2007 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The following additional control units are involved in the adaptive headlights:
The stepper motor controllers control the stepper motors in the headlights (for the automatic headlight-range adjustment and for the adaptive headlights). The stepper motor controllers are not capable of self-diagnosis. The stepper motor controllers are diagnosed and encoded via the control unit for adaptive headlights.
NOTE:
This enclosure describes the stepper motor controllers on the E60, E61, E63, E64.
The contents apply accordingly for the stepper motor controllers on the E65, E66 and E90. Differences are described in the relevant section.
The stepper motor controllers (SMC) control the movement of the positioner modules in the bi-xenon headlights as follows:
- Up and down for automatic headlight-range adjustment (stepper motor for automatic headlight-range adjustment)
- Right and left for adaptive headlights (stepper motor for adaptive headlights)