EGS Control Unit Or Reversing Light Switch

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.

When reverse gear is engaged, the headlights are moved to the straight-ahead position.

On vehicles with automatic transmission, the EGS control unit provides the "Reverse gear engaged" signal. (EGS: electronic transmission control).
On vehicles with manual transmission, the signal is supplied by the reversing light switch.