Specifications

297x198_A8_Integration_Fas09_Bild_070 70 18.02.13 12:29
LED headlights70
Less energy, more light:
Your Audi with full-LED headlights.
LED headlights
Conventional light bulbs reach temperatures of up to 300 °C. Due to their
sophisticated technology, LED lights are somewhat more sensitive and should not get
hotter than 150 °C. Because of the engine, the temperature of the area around the
headlights is already around 120 °C. In theory, then, LED headlights would need
an additional cooling system to be able to work. However, the Audi engineers did
not want to spoil the good low-energy credentials of the LED headlights, so they
developed a fan which directs heat away from the LED chips. The special feature
of this fan is its additional benefit. The high operating temperature of standard
bulbs means that they can defrost the headlights, which LEDs cannot. The newly
developed fan directs warm air from the LED chips directly to the headlight lens
and thus defrosts them and prevents them from misting up.
<300 °C
Subject: Light
Daytime running lights High beam
Dipped beam Indicator
On request, the technology of the full-LED
headlights is available for the Audi A8 and A8 L;
it is standard for the A8 L W12, A8 hybrid,
A8 L hybrid and Audi S8. Full-LED headlights not
only require less energy than standard lighting
systems, but also provide a brighter light which
is perceived to be much more pleasant. The
dipped beam consists of a distinctive line of
ten individual light modules. This makes the
Audi A8 unmistakeable even at night. The high
beam, daytime running lights and indicators also
feature LED technology. The use of the same
material for all functions makes completely new
lighting effects possible. The Audi A8, therefore,
has the right light for every situation: it has a
motorway light which, at speeds above 110 km/h,
automatically more than doubles the range
of the light cone (from approx. 70 m at dipped
beam to 150 m with motorway light). In addition,
the A8 has a combined daytime running light/
indicator light unit as well as an all-weather
light which makes conventional front fog lights
superfluous. The individual LED modules are
skilfully controlled to redistribute the light,
reducing glare from rain or fog.
The fuel consumption and CO₂ emission figures can be found from page 124 onwards.
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