Alfa Romeo 166 Specifications download pdf (Page 112)

111

GAS DISCHARGE HEADLIGHTS

(optional for versions/markets where

applicable)

Gas discharge headlights (xenon) work

with a voltaic arc, in an atmosphere satu-

rated with pressurised xenon gas, instead

of the incandescent filament.

The lighting produced is remarkably

higher than that of the conventional light

in both terms of the quality of the light

(lighter) and of the amplitude and posi-

tion of the lit area.

The advantages offered by better light-

ing are noted (due to less sight fatigue

and better orientation capability of the

driver, thus of travelling safety) especially

in bad weather, fog and/or insufficient

signs, because of the higher lighting

of the side beams which are normally

shaded.

The heavy increase of lighting in the

side beams considerably increases driving

safety because it allows the driver to bet-

ter see other users at the sides of the

road (pedestrians, cyclists and motorcy-

clists).

Very high voltage is needed to trigger

the voltaic arc, after which the supply can

be at low voltage.

The headlights reach their maximum in-

tensity after about 15 seconds from

switching on.

The high luminosity produced by this

type of headlight calls for the use of an

automatic system to keep the headlight

beam aiming constant and prevent daz-

zling other vehicles when braking, accel-

erating and carrying loads.

The electromechanical system for auto-

matic constant beam aiming makes the

headlight aiming device superfluous.

Xenon lights are very long-lasting and

failure is unlikely.

If necessary, have the

system checked and any

repairs done only by Authorized Al-

fa Romeo Services.

WARNING

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