2008 AUDI S6 cooling

Safety first ........ ... ... .. .
Driving Safely ................. .
General notes ... .............. .
Proper occupant seating positions Peda l area ... ..... ....... .... . .
Sto\Ning luggage . .... .... .... . .
Reporting safety defects ....... .
Safety belts .......... ....... .. .
Genera l notes ...... ........... .
W hy safety belts? ............. .
Safety belts ............. ... .. .
Safety belt tensioners . ....• .. ..
Airbag system ........... ... .. .
Important things to kno\N ...... .
Front airbags . ... ... .......... .
Monitoring the Advanced Airbag
System ... .. ... .... ..... ..... .
Side airbags .......... ... ... .. .
Side curta in airbags (SIDEGUARD™l
Child Safety ................... .
191
192
192
194
198
199
201
202
202
203
206
210
212
212
216
223
228
231
234
Important things to kno\N . . . . . . . 234
Child safety seats . . . . . . . . . . . . . . 239
Install ing a ch ild safety seat . . . . . 244
Additional Information . . . . . . . . . . 247
Lo\Ner anchorages and tether for
children (LA TCH) . . . . . . . . . . . . . . . .
249
Vehicle operation . . . . . . . . 257
Intelligent technology . . . . . . . . . . 258
Notice about data recorded by
vehicle contro l modules . . . . . . . . .
258
Elect ronic Stabilizat ion Program
!ESP) . . . . . . . . . . . . . . . . . . . . . . . . . .
258
Braking . . . . . . . . . . . . . . . . . . . . . . . . 261
Servotronic® -advanced po\Ner
steer ing system . . . . . . . . . . . . . . . .
263
Driv ing \Nith your quattro® . . . . . . 264
Energy management . . . . . . . . . . . . 265
Driving and environment . . . . . . . 267
The first 1,000 miles (1,500 km) and
after\Nards . . . . . . . . . . . . . . . . . . . . .
267
Cata lytic converter . . . . . . . . . . . . . 268
Avoid damaging the vehicle . . . . . 269
Operate your vehicle economically
and minimize pollution . . . . . . . . . .
269
Trailer towing . . . . . . . . . . . . . . . . . . 272
Driv ing \Nith a trailer . . . . . . . . . . . . 272
Trai ler to\Ning tips . . . . . . . . . • . . . . 274
Table of contents
Vehicle care ....... ... ... ... 277
Cleaning and protection ........ 278
General information . . . . . . . . . . . . . 278
Care of exterior . . . . . . . . . . . . . . . . . 278
Care of inte rior . . . . . . . . . . . . . . . . . 285
Fuel supply and filling your fuel
tank ... .... ... .... ... .. .... ... .. 291
Gasoline . . . . . . . . • . . . . • . . . . . . . . . 291
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . 292
Checking and filling . . . . . . . . . . . . 296
Engine hood . . . . . . . . . . . . . . . . . . . 296
Engine oil . . . . . . . . . . . . . . . . . . . . . . 299
Engine cooling syste1T1 . . . . . . . . . .
303
Brake fluid . . . . . . . . . . . . . . . . . . . . . 306
Battery . . . . . . . . . . . . . . . . . . . . . . . . 307
Windshield/headlight \Nasher
containe r .... .... .. ... .. .... ... 312
Tires and wheels ............... 313
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Vehicle care I I irechnical data

Instruments and warning/indicator lights
Warning light in the instrument cluster -t
When the _L warning light in the instrument cluster starts to flash,
this can mean one of two things: either the coolant
temperature is
too high, or the coolant
level is too low~ page 33.
If the needle is well in the upper area of the gauge, the coolant
temperature is too high.
Stop the vehicle, switch the engine off and
allow the engine to cool.
If the warning light comes on again after
driving a short distance, contact an authorized dealer.
& WARNING
• Always observe the warning in ~ page 289, "Engine compart­
ment", before opening the hood and checking the engine coolant
level.
• Never open the engine hood if you see or hear steam, or if you
see engine coolant dripping from the engine compartment . You
could burn yourself. Let the engine cool off first so that you cannot
hear or see any steam or engine coolant.
0 Note
• Mounting additional lights or accessories in front of the air inlets
reduces the cooling effect of the radiator. At high outside tempera­
tures or high engine load, the engine could overheat.
• The front spoiler has been designed to properly distribute the
cooling air when the vehicle is moving. If the spoiler is damaged,
this could reduce the cooling effect and the engine could then
over­
heat. Ask your authorized Audi dealer for assistance. •
Tachometer (engine rev counter)
The tachometer indicates the engine RPM (revolutions per
minutes).
The tachometer 0 ~ page 13, fig. 2 is the left of the two large clock ­
type displays. The
engine turns at a speed
1,000 times the single digit in the
display, e.g. if the needle is pointing at the "2" the engine is turning
at 2,000 RPM.
If engine RPM drops below 1,500, you should downshift to the next
lower gear. The red area at the end of the scale indicates maximum
permissible engine RPM after the break -in period. Before reaching
this area, move the selector lever to position "D (Drive)" or ease your
foot off the accelerator pedal.
0 Note
The tachometer needle should not move into the red range. If it
does, then only for a
very short period of time. You could damage
your engine by driving at high RPM .
'£> For the sake of the environment
Upshifting early saves fuel and reduces engine noise.•
Digital clock with date display
Date and time of day can be set in the MM/.
Fig . 3 Instrument
cluster with digital
clock
The date, time of day, and time and date format can be set in the
MMI. You can find out more in the MMI manual. .,_

If the ABS system malfunctions, the ABS warning/indicator light illu­
minates together with the brake system malfunction warning/indi ­
cator light~
&-
& WARNING
• Always observe the warnings in ~ page 289, "Engine compart­
ment", before opening the hood and checking the brake fluid.
• Driving with low brake fluid is a safety hazard . Stop the car and
get professional assistance.
• USA models: If the
BRAKE warning light and the c~ warning
light come on together, the rear wheels could lock up first under
hard braking . Rear wheel lock-up can cause loss of vehicle control
and an accident. Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models : If the brake warning light
«D> and the ABS
warning light come on together, the rear wheels could lock up
first under hard braking. Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme­
diately by your authorized Audi dealer or a qualified workshop .
Drive slowly and avoid sudden, hard brake applications. •
Engine cooling system malfunction -L
A malfunction in the engine cooling system must be
repaired as soon as possible.
When the -t symbol in the display blinks, then either the
engine coolant
temperature is too high, or the coolant level
is too low. An additional driver message can also be
displayed by pressing the [ CHECK] button:
Switch off engine and check coolant level
-Pull off the road .
Controls and equip ­
ment
Driver information display
Stop the vehicle.
- Turn off the engine.
Check coolant level
=> page 304 .
Add coolant if necessary=> page 305.
Continue driving only after the engine coolant
warning/ind icator light goes out.
Contact your authorized Audi dealer for assistance if necessary.
If the engine coolant level is correct, then the radiator fan may be
the cause of the malfunction.
If the generator warning/indicator light should also illuminate
~ page 79, then the fan belt may be damaged.
& WARNING
• If your vehicle should break down for mechanical or other
reasons, park at a safe distance from moving traffic, turn off the
engine and turn on the hazard warning lights
~ page 73, "Emer­
gency flasher
A".
• Never open the hood if you see or hear steam or coolant
escaping from the engine compartment -you risk being scalded.
Wait until you can no longer see or hear steam or coolant
escaping.
• The engine compartment of any vehicle is a dangerous area.
Before you perform any work in the engine compartment, turn of
the engine and allow it to cool. Follow the warning stickers
~ page 289, "Engine compartment" . .,_
I • •

• .___w_ a_ rm __ a_ n_ d_ c_o _l_d ________________________________________________ _
Warm and cold
Climate control
Description
The air conditioner is fully automatic and is designed to
maintain a comfortable and uniform climate inside the
vehicle.
We recommend the follow ing 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 113
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 Maintenance
& Warranty 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 Maintenance
& Warranty 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

Warm and cold -
----------------
energy are temporarily cut bac k or switched off~ page 265 .
Hea tin g sys tems in particu lar requi re a g rea t dea l of energy. If yo u
not ice, for example, that the seat * or rear w indow heating is not
heati ng, they have bee n tempora rily cu t bac k or switche d off by
energy management . These systems are avai lable a gain as soon as
the energy balance has been resto re d.
& WARNING
Reduced visibility is dangerous and can cause accidents .
• For safe driving it is very important that all windows be free of
ice , snow and condensation.
• Completely familiarize yourself with the proper use and func­
tion of the heating and ventilation system and especially how to defog and defrost the windows .
• Never use the windshield wiper /washer system in freezing
weather until you have warmed the windshield first , using the
heating and ventilation system. The washer solution may freeze
on the windshield and reduce visibility.
0 Note
• I f you suspect that the air conditioner has been damaged, turn
on ECO N and con tac t an authori ze d Aud i deale r to hav e the system
inspected .
• R epairs to the A udi air co nd it io ner requ ir e sp ecia l te chni cal
know ledge and special tools . Contact an authorized Audi dealer for
assista nce .
[ i J Tips
• Kee p th e air in ta ke s lots (in fron t of the w inds hield) free from i ce,
snow and debris in order to maintain the proper function of the
cl im ate c ontro l sy ste m.
Controls and equip ­
ment
• Air escapes through vents under the rear window . When p lacing
i te ms of c lothing on the luggage c ompartme nt c over, e nsu re th at
the openings are not covered .
• Climate c ontro l wor ks mo st e ffec tively if th e windo ws and the
power roof are c losed . However, if the interior of a parked vehicle is
e xt re me ly hot fro m the sun's rays , briefly open ing the windows can
speed up the cooling process .•
I • •

-Warm
and cold
L.-.:....:..-=..:..:..:....:.:.:...::....:... ____________ _
Controls
This overview will help you to familiarize yourself with the
air conditioning controls.
I I
Fig. 109 Air conditioning control elements
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 display for a few seconds when MMI is turned on.
Each function is turned on or off by briefly pressing the corre ­
spond ing button. The indicator light in the button illuminates when
the function is active.
Button(s) Function Page
!ECON ON/OFFJ Switch climate control on ~ page 1 13
and off,
switch cooling system on
and off
IAUTOJ Automatic mode ~ page 113
Control knob G Temperature selection ~ page 114
Heated seats* ~ page 114
Air distribution ~ page 116
@ Fan ~ page 116
~ Defrost ~ page 116
Manual recirculation ~ page 117
Heated rear window ~ page 117
Basic settings ~ page 119
[ i] Tips
• Residual heat: With the ignition turned off, you can activate the
residual heat function by pressing the
!ECON ON/OFFJ button. The
residual heat from the coolant can be used to heat the vehicle inte­
rior. The residual heat function is turned off automatically after 30
minutes.
• Synchronizing climate control: By pressing and holding 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.
The new temperature is shown in the display .
• The grille between the
!ECON ON/OFF] and !SETUP ] buttons
must remain unobstructed and must not be taped over. Measuring
sensors are located behind it.•

Warm and cold -
----------------
Turning on and off [ECON ON /OFF]
Turning th e air conditioning on
- Press [ECON ON/OF F] briefly, or
- Press [AUTO].
Turning the air conditioning off
-Press the !ECON ON/OFF] button for at least 2 seconds to
switch the a ir cond itioning off and to block the air supply
f rom the outs ide .
"O FF" appears in the display.
Sw itchin g air c ondit ioning on /off
- Switching the air conditioning system on/off is done with
climate contro l switched on.
- Press the !ECON ON/OFF] button just
briefly.
The air conditioner turns back on if you press one of the control
buttons or the contro l knob.
ECON operation is indicated by the glowing LED on the right next to
the word ECON.
The air conditioning (compressor) is turned off in ECON mode .
"ECON" means "Economy" . You save fuel by switching off the air
conditioning=>
page 119.
Please note that vehicle interior temperature cannot be lower than
the outside temperature in the ECON mode. The air is no t cooled or
dehumidified. This can cause the windows to fog up.
[ i ) Tip s
Residu al he at: With the ignition turned off, you can activate the
residual heat function by pressing the !ECON ON/OFF] button. The
residual heat from the coo lant can be used to heat the vehic le inte-
Controls and equip ­
ment
rior. The residual heat function is turned off automatical ly after 30
minutes .•
Aut omati c mod e [AUTO ]
The automatic mode is the standard setting for all
seasons.
Turning on AUTO
- Selec t temperature be tween 60 °F (+ 1 6 °C) and 84 °F
(+28 °C) .
-Press [AUTO]~ page 112, fig. 109.
Automatic operation ensures constant temperatures in the interior and dehumidifies the air inside the vehicle . Air temperature, volume
and distribution are controlled automatically to reach or maintain
the desired interior temperature as quickly as possib le. Fluctuations
in exter ior temperature and the effects of temperature from the
position of the sun are compensated for automatica lly.
This operating mode works only in the adjustable temperature range, from 60 °F ( + 16 °C) to 84 °F ( +28 °C). If a temperature below
60 °F (+16 °C) is se lected,
LO appears in the display. At temperatures
above 84 °F (+28 °Cl,
HI is displayed. At both extreme settings,
climate control runs continuously at maximum cooling or heating
power. There is no temperature regulation. •
I • •

_________________________________________________ w_ a_ r_ m __ a_n_ d_ c_ o_ld __ llll
The air outlets are actuated either automatically or manually
depending on the operating mode selected. Heated or unheated
fresh air, or cooled air flows from the vents.
The air outlets to heat the rear footwell are located under the front
seats .
[ i] Tips
If the climate control system is operating in cooling 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
outlets completely. •
Using climate control economically
Using the climate controls prudently can help save fuel.
When you use the air conditioner, engine power is reduced
and fuel consumption increases. To save fuel, you should use the air conditioner only when necessary. Also please
note the following points:
- If you want to save fuel, activate ECON.
- If you are going to drive with the windows open, use
ECON.
If the vehicle is extremely hot due to the heat of the sun,
briefly open doors and windows.
~ For the sake of the environment
By reducing the amount of fuel you use, you also reduce the amount
of pollutants emitted into the air. •
Controls and equip­
ment
App lies to vehic les: with solar sliding/ti lt ing sunroof
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.
The blower fan motor is operated by solar energy through the solar
roof after the ignition is turned off. Please make certain that vents
© and © are open to achieve optimal ventilation=>
page 118.
The v entilation operates only with the sunroof closed or in the tilted
position.
If the vehicle was switched off in the recirculation mode, the air
conditioning automatically switches to fresh air operation.
Solar operation is not activated at low outside temperatures. •
Basic settings [SETUP ]
General
The basic settings for the climate control are performed in
the[SETUP] menu.
''I
0 • Econ 1
~ &
I

autu
Fig. 118 MMI display :
Setup climate control
~
I • •