ignition AUDI S8 2009 Service Manual

Clear vision
Lights
Switching the headlights on and off ·'t!-·
In the "AUTO " position, a light sensor automatically
s w itches t he head- and tailligh ts on and off in response to
l ight con ditio ns.
Fig . 56 Instrument
p an el: light switch
Switching on automatic headlight control
- T urn th e lig ht switch to AUTO => fig. 56 .
Switching on the side marker lights
- T urn the light switch to ~oo~.
Switching on the headlights and high beam
- T urn th e li ght swit ch to fD.
- Pu sh the high beam leve r forw ard towa rds t he instru -
m ent panel
=> page 73 .
Switching off the lights
- T urn t he light switch to 0 .
Con tro ls and eq uip­
ment
Clear vision
The headlights only work when the ignition is switched on . While
starting the engine or when switching off the ignition, the head ­
lights will go off and only the side marker lights will be on.
After starting the engine, the xenon headlights are automa tically
adjus ted to the load and a ngle of the vehic le (for example, during
acceleration , braking) . This prevents oncoming traffic from exper i­
encing unnecessary headl ig ht g la re from your xenon head ligh ts .
If the system is not operating properly, a warning symbol in the
Auto -Check Contro l is displayed => page
36.
With the side marke r lights or head ligh ts switched on, the sym bol
next to the light switch illuminates
:oo:.
Daytime running lights
• USA models : The daytime running lights wi ll come on automati­
ca lly when the ig nition is turned on and the ligh t swi tch => fig. 56 is
in the
O position or the AUTO position (only in daylight conditions).
The
Daytime running lights func tio n can be tur ned on and off in the
MMI menu
E xterior lighting => page 70 => & .
• Canada models: The dayti me ru nn ing lights wi ll come on au to ­
matically when the ignition is turned on and the light switch
=> fig. 56 is i n the
O po sitio n or the AUTO po siti on (only in dayligh t
condi tions) => & .
Automatic headligh t control
In the switch posi tion AUTO the automatic headlight cont ro l is
t urned on . The low beams are turned on automa tica lly through a
light sensor as soon as ambient brightness (e .g . when driving into a
t unnel) fa lls below a value preset at the factory . When ambient
brightness increases again, the low beams are turned off again
aut omatically =>& .
I n the
AUTO posit io n the low beams are switched off automatically
when the ignition is turned off. If the high beams were switched on,
they w ill come o n again the ne xt time the a utomatic head ligh t
~
Vehicle care I I irechnical data

Clear vision
control is activated. The high beam function must first be switched
on in the MMI
=> page 70 .
Light Se nsor M alfu nction
In the event of a ligh t sensor mal funct ion, the driver is notified in the
instrument cluster display:
~ Autom atic headlights /aut om atic wipers defe ctive
For safety reasons the low beams are turned on permanently wit h
the switch in
AUTO . However, you can continue to turn the lights on
and off using the light switch . Have the light sensor checked as soon
as possible at a dealership.
& WARNING
• Never use d aytime running lights to see where you are going .
The y are not bright enough and will not let you see f ar enoug h
ahead for s afet y, espe cially at du sk or when it is dark. Alw ays
switch on the low beams at du sk or when i t is dark .
• Autom ati c he adli ght s are onl y intended to as sist the dr iver .
The y do not relie ve the d riv er of his re spon sib ility to che ck the
he adlights and to turn them on manuall y according to t he current
ligh t and vi sibility conditions . For example , fog and ra in cannot be
dete cted by the light sen sor s. S o alw ays switch on the he adlights
under these weather con dition s and when dr iving in the dark
gD .
• Cras hes ca n happen when you c annot s ee the ro ad ahe ad and
when you cannot be seen by other motor ists .
- Alw ays turn on the headlight s so that you can see ahe ad and
s o that others can se e your c ar from th e ba ck.
[ i J Tips
• With the switch in AUTO front fog lights and rear fog lights
cannot be turned on in addition. • I
f you remove the ignition from the ignition lock while the head­
l ights are s till on, a bu zzer w ill sound as long as the driver's door is
open to remind you to turn off the l ights .
• Always observe the specific local regulations for your area as to
when to use your lights. •
Adjusting exterior lighting
The functions are set in the MM/.
Press the I CAR] function button.
- Select
Systems in the CA R menu.
Fig. 57 MM I dis pla y:
E xt eri or ligh ting
- Sele ct Exterior lighting. The menu Exterior lighting
appears => fig . 57.
C oming h ome
The Coming home function ensures that after tu rni ng off the igni ­
tion and open ing the driv er's d oor
the vehicle periphery is illum i­
nated in the dark . In addition, the front fog lights, the tail lights and
the license plate light are turned on . On -ti me can be set fo r a per iod
from
O (off) to 60 seconds. ~

Le avi ng hom e
The Leaving home functio ns ensures that when unlocking the
vehicle periphery is i lluminated in the dark . In addition, the fron t fog
lights, the tai l lights and the license plate light are turned on. Th is
function can be turned on and off .
High beam
With the switch in the AUTO position, the high beams can be turned
on only if the function is turned
on.
D aytim e ru nning l ight s
USA models:
The dayti me running lights can be turned on or off
using this function .
Canada models: The function cannot be turned off. It is activated
automatically each time t he ignition is turned on. This menu item is
shown "greyed out" .•
Front fog lights }0
F ig . 5 8 Instr um ent
pa nel : lig ht swit ch
Switching on the front fog lights }D
- Do not turn the light switch ·YJ- · => fig. 58 toward the fog
light symbol
- Tur n t he light switch to
~oo:: o r to ~D .
Con tro ls and eq uip­
ment
Clear vision
- P ull the ligh t switch t o th e first s to p G).
When the front fog l ights are on, the symbol }D next to the ligh t
switch will illuminate .
Ii ] Tips
With the switch in AUTO front fog lights and rear fog lights cannot
b e turned on in addition .•
R ear fog lights 0$
Fig . 59 In stru ment
p ane l: lig ht s witch
- Do not turn the light sw itch ·YJ- · => fi g. 59 towar d the fog
light symbol
- Turn the light sw itch to
~oo:: or to ~D.
- Pull the ligh t swit ch t o th e second stop @.
When the rear fog lights are on, both the }D and
the light switch will i lluminate. symbols next to
~
Vehicle care I I irechnical data

Clear vision
High beam
~D
-Push the lever forward 0 to switch on the high beam.
Pull the lever back towards you to switch off the high
beam.
Headlight flasher ~D
- Pull the lever toward the steering wheel © to use the
headlight flasher.
Notes on these features
• The turn signals only work with the ignition turned on. The indi­
cator lights ¢ or¢ in the instrument cluster~ page 16 also blink.
• After you have turned a corner, the turn signal switches off auto ­
matically.
• The high beam works only when the headlights are on. The indi ­
cator light ~D in the instrument cluster illuminates when the high
beams are on.
• The headlight flasher works only as long as you hold the lever -
even if there are no lights turned on. The indicator light [Din the
instrument cluster illuminates when you use the headlight flasher.
• With the switch in the
AUTO position, the high beams can only
be turned on if the function is switched on in MMI
~ page 70.
0 Note
Do not use the high beam or headlight flasher if you know that these
could blind oncoming traffic. •
Interior lights
Front interior lights
The interior lights include reading lights for both the
driver and the front passenger.
--
1111
~ . ~D
ro,:q
111111111
0
Interior lights
111111111
111111111
0 Fig. 63 Rooflining:
Front interior lights
Fig. 64 Rooflining:
Front reading lights ;
- Press the @J button to turn off the interior lights
~ fig. 63. If you press the button a second time, the inte­
rior lights in the rear are also turned off.
- Press the
(ID button to turn on the door contact circuit.
Press the button a second time to turn on the door
contact circuit for the rear doors.

- Press the (D button to turn on the interior lights. If you
press the button a second time, the interior lights in the
rear are also turned on.
Reading lights ~
- Press the switch to turn the right or left reading light on
or off=>
page 74, fig. 64.
With the door contact circuit, 00 the interior lights turn on as soon
as you unlock the vehicle or open the doors. The interior lights are
also turned on when the ignition key is removed. The light goes out
about 2 minutes after the doors are closed. When the vehicle is
locked or when the ignition is turned on , the interior lights are
turned off.
When a door is open, the interior lights are turned off after about 10
minutes to prevent draining the battery .
[ i) Tips
The interior lights can be dimmed by holding the (D switch pressed
down. If the interior lights in the rear were turned on by pressing the
switch twice, the rear interior lights are also dimmed .•
Con tro ls and eq uip­
ment
Clear vision
Rear Interior Lights
The rear interior lights also contain reading lights for
rear-seat passengers.
Fig . 65 Rooflining:
Rear interior lights
4
Fig. 66 Rooflining:
Rear reading lights
Interior lights
- Press the@) button to turn off the interior lights
=> fig. 65.
- Press the
(ID button to turn on the door contact circuit.
- Press the
(D button to turn on the interior lights.
Vehicle care I I irechnical data

Clear vision
Reading lights
~
- Press one of the switches to turn the right or left reading
l ight on or off~
page 75, fig. 66.
With the door contact circuit, (ID the interior lights turn on as soon
as you unlock the vehicle or open the doors. The interior lights are
also turned on when the ignition key is removed . The light goes out
about 2 minutes after the doors are closed. When the vehicle is
locked or when the ignition is turned on, the interior lights are
turned off.
When a door is open, the interior lights are turned off after about 10
minutes to prevent draining the battery .
[ i J Tips
• By pressing the safety switch ©~ page 61, fig. 48 , the function
of some switches in the rear can be turned off. If the symbol in
the safety switch illuminates, the window regulators in the rear
doors, the switches for the interior lights and the switch for the elec ­
tric sun shade* are inoperative .
• The interior lights can be dimmed by holding the
(I] switch
pressed dow n.•
A pp lies to veh ic les : w ith back groun d lig ht in g
Background lighting
Four different lighting profiles for the interior lighting can
be selected and dimmed through the MM/ .
1t® ~i=-=
1111111
1
~ 111 111111
0 -- 0
Fig. 67 MMI display :
Background lighting
Fig. 68 Roof module
cutout: Light profile
switch
- Press the Systems control button in the car menu.
- Select
Background lighting .
-Select a lighting profile~ fig . 67 or select Off to deacti-
vate the lighting profile.
- Press the control knob to activate the desired lighting
profile .

- Rotate the control knob clockwise to increase the bright­
ness, and
- Rotate the control knob
counterclockwise to reduce the
brightness.
When the vehicle is unlocked, the standard lighting turns on auto­
matically and dims after approx. 2 minutes, and when the ignition is
turned on it switches off immediate ly.
A background lighting profile can be switched on manually using
the light profile switch ~
page 76, fig. 68. This wi ll turn off automat ­
ica lly after 30 minutes when the ignition is off. To reactivate, press
the lighting profile switch.
Lighting profiles that were selected while driving remain active
during the course of travel.
The following lighting profiles can be adjusted and
dimmed in the MMI:
Highway City
Driver's side footwel l X
Passenger's side foot -
X X
well
Rear footwell X X
X X X
Rear door trim panel X X X X
Front interior lighting
X X
Rear interior lighting
X X
[ i ] Tips
Lighting profiles are stored on the remote control key being used. •
Contro ls and eq uip­
ment
Clear vision
Vision
Sun visors
Using the sun visors makes driving safer.
j !
J_~---~~::Jli
WAAN!NO ..
~(S) :;.......= ~ -=.:­
=-....:=-..: (D- ·, - ~~ ,.. __ ., .. _ ~-
-----·-.., _____ ---
-J,
L--------.=.:.t.-:::Jti
W,\RNINO ATTENTION
-- -- -­
_____ .., ..
--·--·· ------··----­
_____ .., __ ,... ____ .., ___ ... _
---------
___ .., .. ____ _
Fig . 69 Sun visor
Fig . 70 Sun visor with
two-part vanity mirror
The sun visors for the driver and front passenger can be removed
from their center mountings and moved toward the door windows
G) ~ fig. 69 to protect against side glare. After you have moved the
sun visors so that they are parallel to the door windows, you can pull
out the extensions.
Between the visors for the driver and the passenger there is a
folding visor which can be used to cover the space above the rear
view mirror.
Vehicle care I I Technical data

Clear vision
Make-up mirror
The vanity mirrors in the sun visors are equipped with lids. When the
lid is opened
G) , the mirror light in the rooflining turns on automat­
ically. It turns off when the lid is closed and the visor is folded up
again.
Two-part vanity mirror*
The vanity mirrors in the sun visors are in two parts ~ page 77,
fig. 70 . When the lid@ is slid open, a
normal magnifying mirror is
available and when the lid@ is slid open , a mirror with
high-power
magnification is available. In addition, when one of the lids is
opened, the mirror light in the rooflining turns on automatically . It
turns off when the lid is closed and the visor is folded up again. •
Applies to ve hicles : w ith sun s hade
Sun Shade
The rear window is equipped with a sun shade.
•
Fig. 71 Cockpit :
Switch for sun shade Fig. 72 Rear rooflining
Switch
for sun shade
The sunshade can be operated with the switch 1~ •-, 1 in the
driver's area and in the rear.
Instrument panel switch
Press the l:!!l switch to extend or retract the electric
sunshade for the rear window~ fig.
71.
Rear switch
Press the l.&I switch to extend or retract the electric
sunshade for the rear window~ fig. 72 .
After the sun shade for the rear window has reached either of its end
positions, it turns off automatically.
Briefly press the switch a second time to reverse the movement of
the sun shade before it reaches its end position. If the ignition is
turned off while the shade is still moving, the shade will continue
until it reaches the end position before turning off.
[ i] Tips
• If the sun shade is operated repeatedly within a short time, the
built-in overload protection circuit may be tripped. If this occurs,
you will have to wait briefly before you can operate the shade again.
• Because of the decrease in the flexibility of the shade material at
temperatures below freezing, the electrical circuit which operates .,_

Clear vision
Fig. 75 Left rear roof.
lining: Vanity mirror
folded down
- To fold down, tap the rear edge of the mirror as indicated
by arrow~
page 79, fig. 74.
As the mirror folds down, it automatically illuminates. •
Wiper and washer system
Windshield wiper ~
The windshield wiper lever controls both the windshield
wipers and the washer system.
0
"' M
Fig. 76 Windshield
wiper lever
The windshield wiper lever~ fig. 76 has the following posi ­
tions:
Intermittent wiping "91 (activating rain sensor)
Move the lever up to position G).
- Move switch @ up or down, to adjust the sensitivity of
the rain sensor.
Low wiper speed
- Move the lever up to position @.
High wiper speed
- Move the lever up to position G).
One-touch wiping
- Move the lever to pos ition ©, when you want to wipe the
windshield
briefly.
Automatic wiper/washer
- Pull the lever to position© {toward the steering wheel)
and hold.
- Release the lever. The washer stops and the wipers keep
going for about four seconds.
Turning off the wipers
- Move the lever back to position @.
The windshield wipers and washer only work when the ignition is
turned on.
The rain sensor is only activated with the wiper leve r set to position
G) . When it starts to rain, the rain sensor will automatically activate
the intermittent wiping mode.
To reduce the sensitivity of the sensor, move switch
@ down. To
increase the sensitivity, move the switch up. The higher you adjust
the sensitivity, the faster the sensor will react when it senses mois- .,_

ture on the windshield. The rain sensor wiper intervals depend on
t he sensi tivi ty setting as well as vehic le speed . Dur ing brief s tops,
wiper motion wil l adjust in re lation to the amount of rain on the
windsh ield .
During br ief stops, e.g. at a red ligh t, wiper mot ion wil l automa ti­
cal ly be reduced to the next lower speed . Wipers a lready turning at
low speed. cha nge to i ntermittent w ip ing.
When the ignition is turned on, the washer jets are heated .
With the low beam headlights switched on, p ull the wiper lever
towards you only
briefly t o clean the windshield. Ho lding the wiper
lever wou ld a lso engage the headlight washer system each time you
clean the w indsh ie ld and wou ld dra in the washer fluid reservoir
pr ematurely.
& WARNING
• Wiper blades are crucial for safe driving! Only when they are in
good condition are they able to clear the windows properly to
provide uncompromising visibilit y. Worn or damaged wiper blades
are a safety hazard
=> page 82 , "In stalling new wiper blade s"!
• The rain sensor is only designed to assist and support the
driver . It remains entirely the driver' s respon sibility to monitor
out side weather condit ions and to manually acti vate the wipers as
soon as rain or drizzle reduces visibility through the windshield.
• The windshield must not be treated with water-repellent mate­
rial s. They can increa se glare under poor visibility conditions such
as wetness , darkness , or when the sun is low on the horizon. In
addition , they can cau se the wind shield wipers to chatter.
0 Note
In freezi ng or near freezing conditions:
• Always check that the wiper blades are not frozen to the glass
be fore you turn the w ipe rs on. Loose n a wiper b lade wh ich is fro zen
Controls and equip ­
ment
Cl ea r vision
in place before operating the wipers to prevent damage to the wiper
blade or the wiper motor.
• Do not use the wipers to clear a frosted window. Using the
wipers as a convenient ice scraper will des troy the wiper blades .
• Before you take your vehic le to an automatic car wash, make sure
you have the w indshield w iper system switched o ff (lever in p ositi on
Ol, otherwise the windshield wiper system could get damaged in the
car was h if it should suddenly co me on .
[ i ] Tips
• Make sure th e washer fluid reservoir in the engin e compart men t
is topped off before going on a long trip . Look up=>
page 325 for
check ing and fi lling t he washer conta iner.
• I f you switch off the ignition with the windshield wiper lever still
in the inte rval wi pe positio n and t hen come ba ck a while la ter and
drive off, the rain sensor will reactivate itself after the vehicle speed
has exceeded
4 mph (6 km/h) .
• Worn or dirty windshie ld wiper b lades cause smearing which
can aff ect t he opera tion of the rai n senso r. Check the c ondi tion of
your windshield wiper b lades regu lar ly . •
Headlight washer system
The hea dligh t washer s ys tem cle ans the he adlig hts.
Opera te the win dshi eld w iper/was her sy stem @wit h th e
h eadl igh ts t urned o n by ho ld in g the lev er fo r lo nge r than
one s eco nd
~ page 80, fig. 76 .
The washer je ts extend forward out of the fron t bumper driven by
water pressure to spray the front head lights with water .
You should inspect the head lights regu lar ly (for examp le when refu -
e ling) a nd c lean o ff any solid dirt or insects from the lenses. _,.
I • •