air filter AUDI S4 CABRIOLET 2009 Owners Manual

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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:
- Select and set a temperature between 64 °F (+22 °C) and
86 °F (+29 °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 the outside
temperature and for the intensity of the sunlight entering the
vehicle. We recommend you use the
Automatic mode=> page 112
for year -round comfort.
Please note the following:
Turn on the air conditioner to reduce humidity in the vehicle. This
also prevent 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.
I f 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 eliminates 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.
These settings will differ depending if the roof is opened or closed.
This way every driver will maintain his/her own personal settings
and does not have to reset them manually.
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Moreover, the air conditioning switches on again whenever you
press the fan speed or temperature buttons.•
Automatic air recirculation [~I
If outside air is polluted, an air quality sensor in the
vehicle will automatically s witch on the air recirculation .
Switching on air recirculation
-Press [~ J:::::, page 777,fig.130.
Switching off air recir culation
Press~ again, or
- press [AUTO J, or
- press[ ~).
The automat ic air recirculat ion mode should nor mally be left
switched on at a ll times.
The system is ready to operate approximately 30 seconds afte r yo u
turn on the ignition or start the vehicle. Fresh air enters the vehicle only during this initialization period .
I f the
air quality sensor in the air conditioning sys tem detects
exhaust fumes in the outside air, the control unit wil l either pass the
incoming a ir through the pol lution filter, or automatically switch on
the air recirculation .
The air conditioning syste m wi ll aut omatically swi tch o n the ai r
recirculation if it senses that the outside air is very po lluted. At the
same time, it wil l not al low any outside air to ente r the vehic le until
the a ir quality has improved .
T he air recircula tion operates for a maximum of
12 minutes. If the
w indows s tart to fog up whi le the air rec ircula tion is on, press[@!.
Under certain operating conditions (for example, if 1@1 or
[ci;;,, I are
pressed) the air recircu lation automatically switches off . If "ECON" is pressed, or if the temperature is below
-8 °C, the air recirculation
will operate on ly for
12 sec onds. •
Adjusting the fan speed 8 0
The automaticall y selected fan speed can be increased or
de crease d.
D
D
=
D
:c
"' "'
D
D
F ig . 131 Fa n speed
butt ons a nd di splay
ind ication
Press the 8 or G buttons in the center of the co ntrol
panel :::::, fig. 13 1 to adjust the fan speed to your comfort.
The air conditioning system automatical ly regulates the fan speed
in respo nse to the i nterior temperature . However, you can a ls o
adjust the fan speed manually . A line of sma ll bars in the center
display above the fan control but tons will retreat or ex tend to reflect
your adjustments to the fan speed .•
Air distribution
The aut omatically pr ogr am med air dis tribution ca n be
c ha nged m anu ally.
You can use the [ 0 I, (@ ] or [-0- J buttons separately or together in
combina tion . To swi tch back to the au tomatic air distribution
setting, either switch off the buttons you previously selected, or
press
[ AUTO J.

_______________________________________________ C _o_ n _ s_u _ m_ e_ r_l_n _f_o _ r_ m_ a_ t _i _o _ n _ __.PII
re liabi lity. For detailed v ehicl e maintenance consult your Warranty &
M ainte nanc e book le t.
Und er diff icult op era ting co nd iti ons, for example at extreme ly low
outsi de temperatures, in very dusty regions, when towing a trailer
very frequent ly, etc ., some service work shou ld be performed
between the intervals specified. This applies particu lar ly to:
• oil changes, and
• cleaning or replacing the air filter.
<£> For the sake of the environment
By regularly maintaining your vehicle, you help make sure that emis­
sion s tandards are maintained, thus minimizing adverse effects on
the environment. •
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated fue l injection and
emission control systems, and the generally increasing techn ical
complexity of today's automobiles, have steadily reduced the scope
of maintenance and repairs which can be carried out by veh ic le
owners.
Also , safety and env ir o nment al concerns place very strict
limits on the nature of repairs and adjustmen ts to engine and trans ­
mission parts which an owner can perform.
Maintenance, adjustments and repairs usua lly require special tools,
test ing devices and other equipment availab le to spec ial ly trained
workshop personne l in order to assure proper performance, reli ­
abil ity and sa fety of the vehicle and its many systems.
I mproper maintenance, adjustments and repairs can impair the
operation and reliability of your vehicle and even void your vehicle
warranty. Therefore, proof of servicing in accordance with the main­
te nance schedule may be a condit ion fo r upholding a possible
warranty claim made within the warranty period.
Controls . and equip­
ment . Safety first Vehicle operation
Above all, operational safety can be adverse
ly affected, creating
unnecessa ry risks for you and your passengers .
If in doubt about any servicing, have it done by your authorized Audi
dealer or any other properly equipped and qua lified workshop. We
strongly urge you to g ive your authorized Audi dea ler the opportu ­
nity to perform al l scheduled maintenance and necessary repairs.
Your dealer has the fac ilities, original parts and trained spec ia lists
to keep your vehicle running properly.
Performing lim it e d maintenan ce yourself
The following pages describe a limited number of procedures which
can be performed on your vehicle with ord inary tools, should the
need arise and trained personne l be unavailab le. Before performing
any of these procedures, a lways thoroughly read all of the app li ­
cable text and carefu lly fo llow the instruct ions given. Always rigor ­
ously observe the
WARNINGS provided .
Before you che ck anything in t he engine compartment , al wa ys read
and heed all WARNINGS~
& and ~ & in "Working in the engine
compartment" on
page 250.
_& WARNING
• Seriou s per sonal injury m ay occur a s a result of imprope rly
performed maintenance , adjustments or r epair s.
• Alway s be e xtremely ca reful when w orking on the veh icle .
Always follow commonly accepted safety practices and general c ommon sen se . Never risk per sonal injur y.
• Do not attempt any of the maintenance , che cks or repair s
de scr ibed on the follo wing page s if you are not f ully famili ar w ith
the se or other procedures with re spe ct to the vehicle , or are un cer ­
t a in ho w to pro ceed .
• Do not do an y work without the proper tools and equipment .
Have the ne ce ssary wor k done by your authorized Audi dealer or
another properly equipped and qualified work shop .
llJi,
Vehicle care Do-it-yourself service Tec hn ica l da ta