Gas Discharge Headlights; Dipped Beam Headlight Aiming For Left-Hand/Right-Hand Driving - Alfa Romeo 156 GTA Owner's Manual

GAS DISCHARGE
HEADLIGHTS
(optional for versions/markets
where applicable)
The gas (xenon) discharge headlights op-
erate with a voltaic arc, in an ambient sat-
urated with pressure xenon, instead of the
glow filament.
The resulting illumination is sensibly high-
er to that of conventional lamps, both for
light quality (clearer light) and for the width
and positioning of the illuminated area.
The advantages of better illumination can
be perceived (due to less eyesight fatigue
and greater orientation capacity for the dri-
ver, which in turn means higher driving safe-
ty) especially in case of bad weather, fog
and/or insufficient road signs, thanks to the
better illumination of the side parts of the
visual field, normally obscured.
The large increase of the side part illumi-
nation increases driving safety since it allows
the driver to better see the other users on
the edge of the road (pedestrians, cyclists
and bikers).
The triggering of the voltaic arc requires a
very high voltage, while subsequent power
supply can take place at a low voltage.
The headlights achieve their top luminosi-
ty approx. 15 seconds after they are switched
on.
The intense light produced by this type of
headlights requires the use of an automat-
ic system to keep headlight trim constant
and avoid dazzling the vehicles coming from
the opposite direction in case of braking, ac-
celeration or when carrying loads.
The electromechanical system to auto-
matically keep constant trim makes the
headlight tilt compensating device unnec-
essary.
Xenon lights have a very long life, there-
fore breakdowns are unlikely.
WARNING
If necessary, have the
system checked and re-
paired only by Alfa Romeo Autho-
rized Services.
DIPPED BEAM HEADLIGHT
AIMING FOR LEFT-HAND/
RIGHT-HAND DRIVING
(only for versions with gas
discharge headlights)
As regards cars equipped with gas dis-
charge headlights (xenon lamps)(optional
for versions/markets where applicable) with
very great lighting power, when passing
from a country with right-hand driving to one
with left-hand driving, or vice versa, it is nec-
essary to modify the orientation of the
dipped beam headlights, to optimize the il-
lumination of the road edge and avoid daz-
zling the vehicles coming from the opposite
direction.
To have this operation
carried out, contact Alfa
Romeo Authorized Ser-
vices.
WARNING
When you go back to
your country of origin, re-
member to have the dipped beam
headlight orientation modified
again.
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