EGS Control Unit or Reversing Light Switch

WARNING: This page does not describe the selected car, but rather 94 other vehicles, including the 2013 BMW X6, 2012 BMW X6, 2011 BMW X6, 2010 BMW Z4, and 2010 BMW X6 M. 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.