climate control AUDI S8 2008 User Guide

Warm and cold -
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[ 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

___ w_ a_ rm __ a_ n_ d_ c_ o_ ld __________________________________________________ _
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. •

Warm and cold -
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Rear climate controls
Ap plies to vehic les: with rear a ir co ndition ing
Controls
This overview is to assist you in familiarizing yourself with
the air conditioning controls .
Fig . 140 Air co ndi­
t io ning contr ols
The left side of the display shows the temperature selected for the
rear passenger on the left, the right side shows the temperature
selected for the rear passenger on the right . If the air conditioning
settings are changed, this appears briefly in the corresponding area
of the display.
Functions are turned on and off by to uching the buttons . The LED in
the switch illuminates when the function is turned on .
By pressing the
sa fet y swi tc h ® in the driver's door ~ page 63 the
climate controls in the rear are deactiva ted. The message
P AS SIV E
appears in the display. In this mode the rear climate control can only
be operated by the driver through the contro ls in the front compar t­
ment.
I ON /OFF] Tu rni ng o n and off
The air conditioning can be turned on and off by pressing the
I ON /OFF] button. With the ignit ion Off, the residual heat function
can be activated by pressing the button . The residual heat from the
Contro ls a nd eq uip­
ment
coolant can be used to heat the vehicle interior. The residual heat
f unction is turned off au tomatica lly after 30 minu tes .
Se tting th e te mp era tu re
Temperature can be adjus ted over a range from 64 °F (+ 18 °C) to 80
°F (+26 °C)
(!) A ir di st ribu tion
You can adjust the air circulation so that air flows from specific
vents.
• In the @setting, al l the air flows from the v ents in the center
conso le and the outlets in the door pillars.
• In the
-Or setting, air flows from the outlets under the front seats.
• In
the~ setting, air flows from ou tlets in the center console and
the door pil lars as we ll as from the outlets under the front seats .
To regulate air distribution automatical ly, swi tch to !AUTO].
~ H ea ted se ats*
In posit ion O the heating for the seats is turned off. The range of
adjustment is from 1 to 6 .
The seats can be pre -heated for about 10 minutes us ing the heating.
However , the heating is turned off if the seat sensors do not detect
the weight of an occupant during this period .
[ty) Ventil ate d seats*
The seat cushion and the seat back surfaces of the fron t seats can
be ventilated. In position
O the seat ventilation is turned off. The
range of adjustment is from 1 to 6 .
! AU TO
I Autom ati c o pera tion
Air tempe rature, volume of air and air dis tribu tion are automatically
regulated to achieve or maintain the desired temperatures as
quickly as possible .
.,
Vehicle care I I irechnical data

___ w_ a_ r_ m __ a_n_ d_ c_ o_ld ________________________________________________ _
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
~

Warm and cold -
----------------
the outside air drops, fresh air is supplied to the vehicle interior
again .
In the event that the windows fog up during automatic air recircula­
tion, you must press
the® button immediately.
Under certa in operat ing cond it ions, automatic a ir rec ircu lation is
switched off automatically . With outside temperatures below about
-8 °C and in the ECON mode, automatic air rec ircula tion is limited to
15 seconds. •
Synchronization
One climate control setting for all seats.
With synchronization active, the driver's or the passenger's settings
are adopted for the other seats . Al l the other set tings that were
made are transferred to the other seats. This includes all the c limate
control settings right down to the heated seats .
If
a d ifferent setting is selected at a "synchron ized seat", synchroni ­
zation is cancelled.
•
Center air vent
The temperature of the air leaving the center vents can be
changed to differ from the temperature setting.
Controls and equip­ ment
Fig. 14 2 MMI di spla y:
Ce nter a ir ve nt
The air flow coming from the center vents can be adjusted to be
colder or warmer t han the selected set temperatu re.
In this way you have the opportunity to have the a ir flow from the
center vents a litt le warmer or coo ler, depending on the time of year .
A litt le cooler in the summer and a little warmer in the winter. •
Applies to vehic les : with rear air condition in g
Rear seat operation
The rear climate con trols can be o perated fr om the
driver's area.
With active rear seat operation, the driver or the passenger can
operate the rear climate control system from
his/her contro ls. •
Ap plies to vehicles : w ith so lar roof
Solar operation
Depending on the solar irradiation in the vehicle, the fan
will run using solar power to keep fresh air circulating
inside the vehicle, even af ter you switch off the ignition.
- Switch the solar operation to on .
After you switch off the ignition, the fan is operated using solar
power from the solar roof. Make sure outlets
G) and © are open for
maximum
ventilation => page 722, fig. 137.
The vent ilation works on ly if t he sunroof is closed or t ilted up.
If you turn off the engine whi le the air rec irculation is on, the air
conditioning automatically switches to fresh air mode.
Solar operation is not activated at low outside temperatures .•

___ T_ ir_e _s_ a_n_ d_ w_ h
_ e_e_ l_ s _______________________________________________ _
• If the spare tire is different from the tires that you have mounted
on your vehicle (for example winter tires or wide profile tires), then
use the spare tire for a short period of time only and drive with extra
care . Replace the flat tire with the tire matching the others on your
vehicle as soon as possible.
• If you should put different wheels and tires on your vehicle (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatib le with the tire pressure monitoring system.
Otherwise the system will register a malfunction and a fault message will be displayed. For more information, contact your Audi
dea ler.
0 Note
• When installing new tires, be careful not to damage the valves or
tire pressure monitoring system sensors.
• Never drive without the va lve stem cap. The valves could get
damaged.
• If the sensors must be replaced, then the valve must also be
replaced at the same time.
For the sake of the environment
Dispose of o ld tires in accordance with the loca l requirements. •
Uniform tire quality grading
• Tread wear
• Traction AA A B C
• Temperature A B C
Qua lity grades can be found where applicable on the tire side wal l
between tread shoulder and maximum section width
=> page 336,
fig. 276.
For example: Tread wear 200, Traction AA, Temperature A.
All passenger car tires must conform to Federal Safety Require­
ments in addit ion to these grades.
Tread wear
The tread wear grade is a comparative rating based on the wea r rate
of the tire when tested under contro lled conditions on a specified
government test course.
For example, a tire graded 150 wou ld wear one and one half (1 1/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actua l condi­
tions of their use, however, and may depart significantly from the
n orm due to variations in driving habits, service practices and differ­
ences in road characteristics and climate .
Traction
The traction grades, from highest to lowest, are AA, A, Band C.
T hose grades represent the tire's ability to stop on wet pavement as
measured under contro lled conditions on specified government
t est surfaces o f asphalt and concrete. A tire marked C may have
poor traction performance
=:> & .
Temperature
The temperature grades are A (the highest), B, and C, representing
t he tire's resistance to the genera tion of heat and its abi lity to dissi ­
pate heat when tested under control led conditions on a specified
indoor laboratory test wheel.
Sustained high temperature can cause the mater ial of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire
failure=> &.
The grade C corresponds to a leve l of performance which a ll
passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades Band A represent higher levels of
performance on the laboratory test whee l than the minimum
required by law.
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