Automatic Headlamp System
When it is dark enough outside and the exterior lamps control is in the automatic position, the headlamps come on automatically. See Exterior Lamp Controls .

The vehicle has a light sensor located on top of the instrument panel. Make sure it is not covered, or the headlamps will be on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
See also:
Collision/Detection Systems
If equipped, select the Collision/ Detection Systems menu and Park Assist will
be displayed.
Park Assist
This allows the Ultrasonic Parking Assist feature, audible only, to be turned
on or off.
...
Anti-theft Alarm System
This vehicle has an anti-theft alarm system. ...
Driving experience
The chassis and structural systems were developed in Germany and give the
Buick Regal the handling and dynamics of a premium European sport sedan, as well
as the quiet, refined ride and road manne ...
