CITROEN DS3 Handbook page 136

Lighting controls
System for selection and control of the various front and rear lamps providing the vehicle's lighting.
Main lighting
The various front and rear lamps of the vehicle
are designed to adapt the driver's visibility
progressively according to climatic conditions:
- sidelamps, to be seen,
- dipped beam headlamps to see without
dazzling other drivers,
- main beam headlamps to see clearly when
the road is clear.
Additional lighting
Other lamps are installed to fulfil the
requirements of particular conditions of
visibility:
- a rear foglamp to be seen from afar,
- front foglamps for improved vision,
- LED lamps to be seen during the daytime.
Programming
Various automatic lighting control modes
are also available according to the following
options:
- guide-me-home lighting,
- automatic illumination of headlamps.
In some weather conditions (e.g. low
temperature or humidity), the presence
of misting on the internal surface of the
glass of the headlamps and rear lamps
is normal; it disappears after the lamps
have been on for a few minutes.