ECO mode AUDI S8 2008 User Guide

is pressed. If the check light does not flash, the battery is dead and
has to be replaced .
In addition, when the battery is dead the
!i, symbol appears in the
instrument cluster display as well as the message:
!i, Pl ease chang e key batte ry
We recommend having the battery changed by an Audi Dealer .•
Electronic immobilizer
The immobilizer helps to prevent unauth orized use of
y o ur vehicle.
A computer chip inside your key automatica lly deactivates the e lec ­
t ronic immobilizer when you insert the key in the ignition lock, or on
vehic les with Advanced Key*, when the key is inside the vehicle .
When you remove the key from the ignition lock, or on vehicles with
Advanced Key, when you remove the key from the vehicle, the elec­
t ronic immobilizer is automatically activated once again.
If an unauthorized key was used,
S AFE is disp layed continuous ly in
the odometer disp lay field.
& WARNING
Alw ays tak e the k ey with you wh en you le ave th e vehicl e. The k ey
ca n di sarm th e ele ctr onic engin e immobili zer and permit an un au­
thorized p ers on to start th e eng in e and enable opera tion of the
v ehicle system s such as power window or power sunroof l eading
to ser iou s per son al in jur y.
[ i ] Tip s
• Your engine can on ly be started using the factory -equipped key.
• You may not be able to start your vehic le if an ignition key of a
different vehicle make is also located on your set of keys .•
Controls and equip­
ment
Openin g and clo sing
Certification
The remote control device comp lies with
• USA models: Part 15 of the FCC Rules .
• Can ad a m odels: RSS -210 of Industry Canada .
Operation is subject to the f ollowing conditi ons :
• this device may not cause harmful interference, and
• t his device must accept any interfere nce rece ived, i ncluding
interference that may cause undes ired operation.
0 Note
The manufacturer is not responsib le for ANY RA DIO OR TV interfer­
ence caused by unauthorized modifications to this equipment .
Changes or modifications to this unit not express ly approved by the
party responsible for compliance could void the user's authority to
operate the equipment. •
Power locking system
General description
The power locking system locks or unlocks all doors and
the rear lid simultaneously.
The power locki ng system in your veh ic le incorporates the following
functions:
• Central lock ing function
• Selective unlock
feature=> page 52
• Remote contro l feature=> page 48
• Advanced Key *=> page 59
• Anti -theft alarm system=> page 67

Le avi ng hom e
The Leaving home functions 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 a re 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 aytime ru nning l ight s
USA models:
The daytime running lights can be turned on or off
using this function .
Canada models: The function cannot be tu rned off . It is activated
automatically each time t he ignition is turned on. This menu item is
shown "greyed out" .•
Front fog lights }0
Fi g. 58 Ins tru men t
pan el: lig ht swit ch
Switching on the front fog lights }D
- Do not turn the light switch -r:;_ -=> fig. 58 toward the fog
l ight symbol
- Tu rn t he light switch to
~oo: o r to fD .
Contro ls a nd eq uip­
ment
Clear vision
- P ull the ligh t switch to th e fi rst st op G) .
When the front fog l ights are on, the symbo l }D next to the ligh t
switch will illuminate .
[ i ] 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 strument
p an el: lig ht sw itc h
- Do not turn the light sw itch -r:;_ -=> fig. 59 toward the fog
light symbol
- Turn the light sw itch to
~oo: or to fD.
- Pull the light swit ch t o th e second stop 0-
W hen the rear fog lights are on, both the }D and
the light switch will i llum inate. symbols next to
~
Vehicle care I I irechnical data

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 il lumina tes.•
Wiper and washer system
Windshield wiper ~
The windshield wiper lever controls both the windshield
wipers and the washer system.
Fig. 76 Windshield
wiper lever
The windshield wiper lever~ fig. 76 has the following posi ­
tions:
One-touch wiping
-Move the lever to position G) , when you want to wipe the
windshield
briefly.
Intermittent wiping <:S;)l (activating rain sensor)
-Move the lever up to position ®·
-Move switch © up or down, to adjust the sensitivity of
the rain sensor.
Low wiper speed
-Move the lever up to position G).
High wiper speed
-Move the lever up to position @.
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-
.,_

________________________________________________ S_ e_ a_t _
s _a_ n_d _ s_t _o _ r_ a_ g~ e __ _
& WARNING
• The ski sack is intended only for the transportation of skis and
other light objects. To reduce the risk of serious personal injury,
never transport heavy or pointed objects in the ski sack.
• When braking rapidly or during an accident, the load could be
displaced and cause injury to occupants.
• Sharp edges on the load must be covered for protection.
Always fasten the belt tightly around the sack and its contents
=:> page 102, fig. 108.
[ i] Tips
Never stow the ski sack away when it is still wet or damp (for
example, snow melting from skis). Allow i t to dry completely before
stowing it away. •
Roof rack
First things first
A roof rack can be fitted to carry additional luggage on
the roof.
- Always read and follow the instructions provided by the
roof rack manufacturer when the roof rack system must
be installed.
If a roof rack or similar luggage carrying equipment is to be
installed, please note the following:
• To enhance the vehicle's streamlined design, rain gutters have
been molded into the roof. It is not possible to use normal roof
racks. Only install a roof rack specifically designed for your model
A8. Contact the nearest Audi dealer for information on approved modular roof racks for your vehicle.
Controls and equip­
ment
• These approved roof racks are the basis for a complete roof rack
system. Additional attachments for the basic roof rack are neces ­
sary to safely transport luggage, bicycles, surf boards, skis or small
boats. All necessary hardware for these systems is available at your
authorized Audi dealer.
• We recommend that you keep the installation instructions for
your roof rack system together with your Owner's l iterature in the
vehicle.
When should the roof rack be removed?
• Before going through an automatic car wash (it is best to ask the
car wash operator for advice)
• When not in use, to reduce fuel consumption, wind noise and to
guard against theft.
& WARNING
• Use of an unapproved roof rack or incorrect mounting of an
approved roof rack can cause the roof rack or the items attached
to it to fall off the roof onto the road.
• Objects falling from the roof of a vehicle can cause a crash and
personal injury.
• Only mount the system between the markings shown in
~ page 104, fig. 109.
• The roof rack system must be installed exactly according to the
instructions provided.
(D Note
• Your vehicle warranty does not cover any damages to the vehicle
caused by using roof racks or mounting struc tures not approved by
Audi for your vehicle. The same applies to damage resulting from
incorrect roof rack installation.
• Always check the roof rack mountings and hardware before each
trip and during a trip to make sure everything is securely tightened.
~

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Warm and cold
Climate controls
Description
The air conditioner is fully automatic and is designed to
maintain a comfortable and uniform climate inside the
vehicle.
We recommend the following settings:
- Set the temperature to 75 °F (+23 °C).
- Press the !AUTO
I button.
With this setting, you attain maximum comfort in the least amount
of time. Change this setting, as desired, to meet your personal needs.
The climate controls are a combination of heating, ventilation and cooling systems, which automatically reduce humidity and cool the
air inside your vehicle.
The air temperature, air flow and air distribution are automatically
regulated to achieve and maintain the desired passenger compart­
ment temperature as quickly as possible.
The system automatically compensates for changes in outside
temperature and for the intensity of the sunlight entering the
vehicle. We recommend you use the
Automatic mode=> page 117
for year -round comfort.
Please note the following:
Turn on the air conditioner to reduce humidity in the vehicle. This also prevents the windows from fogging up.
When the outside temperature is high and the air is very humid ,
condensation from the evaporator may drip under the vehicle. This
is normal and does not indicate a leak. If the outside temperature is
low, the fan normally only switches to
a higher speed once the engine coolant has warmed up sufficiently.
The air conditioner temporarily switches off when you drive off from
a standstill using full throttle to save engine power.
The compressor also switches off if the coolant temperature is too high, so that the engine can be adequately cooled under extreme
loads.
Air pollutants filter
The air pollutants filter (a combined particle filter and activated
charcoal filter) reduces or prevents outside air pollution (dust, or pollen) from entering the vehicle.
The air pollutants filter must be changed at the intervals specified
in your Warranty
& Maintenance booklet, so that the air conditioner
can properly work.
If you drive your vehicle in an area with high air pollution, the filter
may need to be changed more frequently than specified in your
Audi Warranty
& Maintenance booklet. If in doubt, ask your autho­
rized Audi Service Advisor for advice.
Key coded settings
The air conditioner settings selected are automatically stored and
assigned to the key being used. When the vehicle is started, the air
conditioner automatically selects the settings assigned to that key.
This way every driver will maintain his/her own personal settings
and does not have to reset them manually.
If a different driver uses your key and changes the air conditioner
settings, the latest adjustments will erase and replace the settings
you have stored.
Energy management
To prevent the battery from being discharged and to restore the
balance of energy, components which require large amounts of

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Controls
This overview will help you to familiarize yourself with the
air conditioning controls.
Fi g. 1 29 Air cond it io ning co ntrol e lements
The left display indicates the temperature selected for the driver's
side, the right display indicates the temperature selected for the
passenger 's side.
The settings you make are shown in the MMI disp lay for a few
seconds when
MMI is turned on.
Each function is turned on or off by briefly pressing the corre ­
sponding button . The indicator light in the button illuminates when
the function is active. But- Fun
ction
II Page
ton (s )
ION/OFF) Turning on and off ~ page 117
Automatic mode ~ page 117
Contro l Temperature selection ~ page 717
knob
Q) Heated seats* ~ page 118
8 @ Ventilated sea ts* => page 118
00 Air distribution => page 120
~ Defrost ~ page 120
=> page 723
00 Fan => page 120
~ Manual recirculation ~ page 721
@@ Heated rear window ~ page 124
!SETUP) Basic settings => page 126
[ i ] Tip s
• Residual h eat : With the ignition turned off, you can activate the
residual heat function by pressing the
I ON/OFF ) button. The
residual heat from the coo lant can be used to heat the vehicle inte ­
rior. The residua l heat function is turned off automatically after 30
minutes.
• Synchroniz ing clim ate control: By press ing and ho lding the
control knob on the driver's side, the temperature setting on the
driver's side can be switched to the passenger's side , and vice versa.
In the case of vehicles with rear air conditioning*, the selected
t emperature setting is also app lied to the o uter rear seats. The new
temperature is shown in the display. •

Warm and cold Ill
----------------
Manual air circulation [~]
Air recirculation prevents exhaust fumes or other pollu­
tion from entering the vehicle.
Turning on air recirculation
-Press[~] =>page 116,fig.129 =>&
Turning off air recirculation
-Press ~ again, or
- press [AUTO], or
-
press[@].
I n the air recirculation mode, the air in the passenger compartment
is recirculated to prevent exhaust fumes and other pollution from
entering the vehicle. We recommend that you use the manua l air
recirculation under the following conditions:
• when driving through tunnels
• in a traffic jam.
& WARNING
Do not use this setting for extended periods of time . The windows
could fog up since no fresh air can enter the vehicle . If the
windows fog up, press the air recirculation button again immedi­ ately to switch off the air recirculation function or select defrost . •
Controls and equip­ ment

Warm and cold -
------------------------------..J
[ i J Tip s
If the climate control system is operating in cool ing mode, air flows
primarily from the outlets in the center console and in the door
pillars . To achieve adequate cooling, you should never close the
out lets completely. •
Using climate controls economically
Using the climate controls prudently can help save fuel.
When you use t he a ir conditioner, engine power is reduced
and fuel consumption increases. To save fuel, you should
use the a ir co nditioner only when necessary. Also please
note the follow ing po ints:
- If you want to save fuel, activate ECON.
If you are going to drive with the windows open, use ECON.
W For the s ake of the environm ent
By reducing the amount of fuel you use, you also reduce the amount
of pollutants emitted into the air. •
Applies to v ehicl es: with so lar slidi ng /tilt ing sunr oof
Solar blower fan /solar roof
With sufficient sunlight, the blower fan continues to
operate with solar energy to bring in fresh air after the
ignition has been switched off.
T he fan motor is operated by solar energy through the solar roof
after the igni tion is turned off. P lease make certa in that
vents ©
and© are open to achieve optimal ventilation ~ page 122, fig. 137 .
Controls a nd eq uip­
ment
The ventilation operates only with the sunroof c losed or in the tilted
position.
If the vehicle was switched off in the recirculation mode, the air
conditioning automatica lly switches to fresh air operation .
Solar operation is not activated at low outside temperatures .•
Windshield defogging/defrosting
Ap plie s to v ehic le s : with windsh ield defogg er/defr oste r
Windshield defogger /defroster ®
The win dshield defogger rem oves humidity from the
windshield.
F ig. 138 Win dsh ield
d efogger sw itc h
- Press the@ button to turn the w indshield defogger on
and
off ~ fig. 138 .
The w indshield defogger works only when the engine is running .
The indicator light in the button illuminates when the windshield defogger is turned on .
With a cold engine at outside temperatures below 41 °F (+5 °C) and in !AU TO
l operation , the windshield defogger turns on automati ­
cally . Depending on outside temperature, the windshie ld is heated .._
Vehicle care I I irechnical data

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for a maximum of 4 minutes. The temperature for the climate
control must be selected so that it is operating in the heating mode.
When selecting the program setting
®, the windshield
defogger/defroster is switched on automatically at outside temper ­
atures below 41 °F (+5
°Cl. Depend ing on outside temperature, the
windshield is heated from 2 up to a maximum of 4 minutes.
The windshield defogger is deactivated in ECON mode .
[ i J Tips
• If a crack forms in the windshield due to a foreign object (e .g . a
stone chip), the defogger/defroster is not turned on . This prevents
the crack from spreading.
• We recommend that you locate an Audi dealership immediately
to have the windshield replaced.
•
Rear window defogger QW
Fi g. 13 9 Sw itch for
r ea r wi ndow defo gger
Press t he (ffiJ switch to turn the rear w indow defogger on
and
off => fig. 139.
The rear window defogger works only when the engine is running .
The indicator light in the button illuminates when the rear window
defogger is turned on . T
he rear window defogger will switch off automatically after a short
t ime . The time the rear window defogger remains on wi ll vary
depending on the outside temperature.
At very low outside temperatures, the rear window defogger can be switched on continuously by push ing the
QiP button for more than 2
seconds. This remains stored until the ignition is switched off .
A rear window defogger that was switched on also remains stored
for 15 minutes after the ignition is switched off . If the engine is
r estarted within these 15 minutes, t he rear w indow defogger is also
activated, depending on outside temperature. With a vehic le that is
parked for a short time, the rear window defogger does not need to
be manua lly activated aga in.
W For the sake of the environment
Turn the defogger off when the rear w indow is clea r. When you save
electricity, you save fuel. •

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0 Note
To avoid damage to the heating elements in the seats, do not kneel
on the seats or place heavy loads on a small area of the seat. •
Basic settings [SETUP]
General
The basic settings for the climate control are performed in
the[SETUP] menu.
Fig . 141 MMI display:
Setup climate control
The basic settings for the air conditioning can only be made
with MMI turned on.
- Press the !SETUP] button in the controls to access the
menu.
- Select the desired function using the control knob (driver
or passenger) in the air conditioning controls.
The following functions can be selected:
• ECON
=> page 126
• Automatic recirculation => page 126
• Synchronization => page 127
• Center air vent=> page 127
• Rear seat operation* => page 127
• Solar operation* => page 127•
ECON
The ECON mode helps to save fuel.
The air conditioning is turned off in ECON mode. "ECON" means
"Economy". By switching off the air conditioning (compressor), you
save fuel.
Please note that vehicle interior temperature cannot be lower than
the outside temperature in the ECON mode. The air is not cooled or
dehumidified.
If the vehicle interior becomes too hot or if the windows fog up,
ECON mode should be turned off. As soon as the
(AUTO ] button in
the air conditioning controls is pressed, the system automatically leaves the ECON mode, and the air conditioning compressor is
tu rned on again. •
Automatic recirculation mode
An air quality sensor detects increased concentrations of pollutants in the outside air and automatically switches
to recirculation mode.
We recommend that you always keep automatic air recirculation ON
to prevent polluted outside air from entering the vehicle interior.
If the
air quality sensor located in the air conditioning system
detects polluted outside air, the sensor decides whether the air
pollution can be reduced by the factory-installed pollutant filter or
whether it is necessary to switch to air recirculation . W ith heavy
concentrations of pollutants, the air conditioning system is
switched automatically to recirculation mode and the supply of
outside air is blocked. As soon as the concentration of pollutants in
~