2013 AUDI S4 air filter

76 Warm and cold
Warm and cold Climate controls
Description
The climate control system warms, cools and
adds humidity to the air in the vehicle interior.
It is the most effect ive when the windows and
sunroof are closed . If there is a build-up of
heat inside the vehicle, ventilation can help to
speed up the cooling process.
I n all heating mode functions except
defrost,
the blower on ly switches to a higher speed
once the engine coolant has reached a certain
temperature.
Condensat ion from the cooling system can
drip and form a puddle of water under the ve­
hicle. This is normal and does not mean there
is a leak.
Pollutant filter
The pollutant filter removes pollutants s uch
as dust and pollen from the air.
The air pollutants filter must be changed at
the intervals spec ified in you r Warranty
&
Maintenance booklet, so that the air condi­
tioner can properly work.
If you drive your vehicle in an area with h igh
a ir po llution, the fi lter may need to be
changed more frequent ly than specified in
your Aud i Wa rranty
& Ma intenance booklet. If
in doubt, ask your authorized Audi Service Ad ­
visor for advice .
Key coded settings
The climate control settings are automat ically
stored and assigned to the remote control key
that is in use.
A 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 con­
densation.
- Comp letely familiarize yourself with the
proper use and function of the heating
and ventilation system and especially how to defog and defrost the windows.
- Never use the windshield wiper/washer
system in freez ing weather unt il you
have warmed the windshield first, using
the heating and ventilation system. The
washer solution may freeze on the wind­ shie ld and reduce visib ility.
(D Note
- If you suspect that the air conditioner
has been damaged, switch the system
off to avoid further damage and have it
inspected by a qualified dealership.
- Repairs to the Audi air conditioner re­
quire special technical know ledge and
special tools. Contact an authorized Aud i
dea ler fo r assistance.
@ 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.
(D Tips
-Keep the air intake s lots (in fro nt of the
w indshield) free from ice, snow and de ­
bris in order to maintain the proper func­
tion of the climate control system.
- T he energy management system may
switch the seat heating* or rear window
defroster off temporarily . These systems
are available again as soon as the energy
balance has been restored.
- Air escapes through vents under the rear
window. When placing items of clothing
on the luggage compartment cover, en­
sure that the openings are not covered.

Warm and cold 77
Operation
We recommend pressing the IAUTO I button and setting the temperature to 72 °F (22 °C).
Fig. 91 Automatic cl imate control system: control
Fig. 92 3-zone deluxe automatic climate control': controls
Press the buttons to turn the functions on or
off. Use the d ials to adjust the temperature,
the blower speed and the a ir distribution. The
L ED in a button will light up when the func­
tion is switched on. The settings are displayed
for a few seconds in the radio or MMI* display.
In vehicles with a 3-zone deluxe automat ic cl i­
mate control systems *, the dr iver and front
passenger side can be adjusted separately.
The settings are also d isplayed in the climate
con trol system display.
IOFFI Switching the climate control
system on/off
The IOF FI button switches the climate control
sys tem on or off.
It also switches on when you press the knob. Airflow from outs
ide is
blocked when the climate control system is
switched off.
IACI Switching cooling mode on/off
The air is not coo led and humidity is not re­
moved when cooling mode is switched off.
This can cause fog on the w indows. Cooling
mode switches off automatically when the
outside temperature is be low zero.
1- 1 Switching recirculation mode on/off
In recircu lation mode, the air inside the vehi ­
cle is circulated and filtered. This prevents the
unfiltered air outside the vehicle from enter­
ing the vehicle interior. We recommend

280 Consumer Information
Consumer Information
Warranty coverages
You r Audi is covered by the following war­
ranties:
- New Vehicle Limited Warranty
- Limited Warranty Against Corrosion Perfo-
ration
- Emissions Control System Warranty
- Emissions Performance Warranty
- California Emissions Control Warranty (USA
vehicles only)
- California Emissions Performance Warranty
(USA vehicles only)
Detailed information regarding your warran­
ties can be found in your
Warranty & Mainte­
nance booklet .
Operating your vehicle
outside the U.S.A. or
Canada
Government regu lations in the United States
and Canada require that automobiles meet
specific emission regulations and safety
standards. Therefore, veh icles built for the
U.S.A . and Canada differ from vehicles sold in
other countries .
If you p lan to take your vehicle outside the
continental limits of the United States or Can­
ada, there is the possibility that:
- unleaded fuels for vehicles with cata lytic
converter may not be available;
- fuel may have a considerably lowe r octane
rating. Improper fuel may cause engine
damage ;
- service may be inadequate due to lack of
proper service facilities, tools or testing
equipment ;
- replacement pa rts may not be readily availa­
ble.
- Navigation systems for vehicles built for the
U.S.A. and Canada will not necessar ily work
in Europe, and may not work in other coun­
tries outside of North America.
(D Note
Audi cannot be responsible for mechanical
damage that could result from inadequate
fuel, service or parts availability.
Audi Service Repair Manuals and Literature
Audi Official Factory Service Manuals and Lit­
erature are published as soon as possible after
model introduction. Service manuals and lit­
erature are available to order from the Audi
T echnical Literature Ordering Center at:
www.audi.techliterature.com
Maintenance
General
Your vehicle has been designed to help keep
maintenance requirements to a minimum.
However, a certain amount of regular mainte­
nance is still necessary to assure your vehicle's
s afety, economy and rel iability. For detailed
vehicle maintenance consult your Warranty &
Maintenance booklet.
Under difficult operating conditions, for ex­
ample at extremely low outside temperatures,
i n very dusty regions , when towing a trailer
very frequently, etc., some service work
should be performed between the intervals
specified. This applies particularly 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 emission standards
are maintained, thus minimizing adverse
effects on the environment.
Important considerations for you and
your vehicle
The increasing use of electronics, sophisticat­
ed fuel injection and emission contro l sys-
tems, and the genera lly increasing technical
liJJ,

Optional equipment
Marked with an asterisk . . . . . . . . . . . . . . . 6
Othe r equipment (effic iency program) 28
Outside m irrors
refer to Exter ior mirrors . . . . . . . . . . . . . 50
Outside temperature display ... .. .. .. .. 24
Owner's manual How the Owner 's Manua l is o rganized . . . 6
p
Paint
Touch-up . .. .. .. .. .. .... ... .. .. .. . 207
Paint No ... .. ................. .. ... 275
P arce l shelf . ... .. ........ ... .. .. .. .. 75
Park assist . ................ ...... .. 116
Parking ..... .. .. .. .. .... ... .. .. .... 86
Automatic transmission . . . . . . . . . . . . . 93
Valet park ing ............ .... .. .. .. 45
P ark ing brake . ..... .... ... .. .. .. .. .. 85
also refer to Electromechanical parking
brake . ..... .. .. ... . .... ... .. .. .... 85
P ark ing system ............ .. .. .. .. . 116
C le a ning sensors/c amer a .... .. .. .. . 205
Rear . ..... ... .. .. ..... ... .. .. ... 116
Rear,withrearviewcamera ... .. .. .. . 117
P ark ing system (rear) ............ .... 116
Adj ust ing the wa rning tones .. .. .. .. . 117
Park ing system (rear, w ith rear v iew cam-
era) Park ing mode 1 . ............. ... .. 120
P ark ing mode 2 ............. ... ... 121
S afety precautions ........ .... .. .. . 118
Sw itchi ng on/off ......... .. .. .. .. . 119
Sw itching rear view camera on/off ... . 122
Part it ion net . . . . . . . . . . . . . . . . . . . . 70, 7 1
Parts rep lacement . ..... ... .. .. .. .. . 282
P ass-t hrough . . . . . . . . . . . . . . . . . . . . . . . . 7 4
PASSENGER AIR BAG OFF light . . . . . . . . 156
Passive safety system .... ... .. .. .. .. . 127
P eda ls .. .. ... ...... ............. .. 132
Phys ica l pr inc iples of a frontal coll is ion . 138
P olishing .. .. .... ............. .. .. . 20S
Pollutant filter (automatic AC system) . .. 76
Power seat adjustment . . . . . . . . . . . . . . . . . . . . 60
Inde x 293
Power locking system . . . . . . . . . . . . . . . . . 32
Emergency locking . .. ... ...... ... .. . 38
Power w indows . ... . .. ... .... ... .. . 43
Rear lid ... .. .. .. ................. . 39
Se lective unlock feature ............ . 3 7
Settings ........ .. ................ 37
Slid ing/tilting sunroof .. .. .. ... ... .. . 43
Power steering
refer to Electro-mechanical power as-
s ist ...... .. .. .. .. . .............. 190
Power w indow
Convenience opening/closing . ... .. .. . 43
Power w indows .. .. .... ........... .. . 42
Child safe ty locks . . . . . . . . . . . . . . . . . . . 42
Malfunctions .. .. ................. . 44
Pregnant women Spec ial considerations when wear ing a
safety belt . . . . . . . . . . . . . . . . . . . . . . . 142
Proper occupant seating positions ... .. 128
Proper safety belt position ..... ... .. .. 141
Proper seating posi tion
Front passenger ................... 129
O ccupants . .. .. .. .... ........... .. 128
Rea r passengers .. .... ........... .. 130
Protective liner .. .. .... ... .... .... .. . 7S
Q
Quart z clock . . . . . . . . . . . . . . . . . . . . . . . . 12
qua tt ro®
refer to all-wheel drive
191
Question What happens to unbelted occupants? 138
Why safe ty belt s? ............. .... 13 7
R
Radiator fan 228
Rain/ light sensor
Head lights .. .. .. .... ........... .. . 47
Intermittent (w indshield w ipers) . .. .. . S3
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Reading lights ....... . .. .. ..... ... .. . 50
Rea r doo r su n shade . . . . . . . . . . . . . . 52, 53
Rear fog lights .. ...... ............. . 47
Rea r lid
Automatic operation . .. ..... ... .. .. . 40
Emergency re lease . .. ... .... ... .. .. . 41
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