2014 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

288 Index
Parking system 116
Rear .. .... ............... .. .... . 116
Rear, w ith rear v iew camera ... .. .... . 118
Parking system (rear) ..... .. .. .. .. .. . 116
Ad justing the warning tones .. .. .... . 117
Parking system (rear, w ith rear view cam-
era) Parking mode 1 ........ .. .. .. .. .. . 120
Parking mode 2 .......... .. .. .... . 121
Safety precautions ...... .. .. .. .. .. . 118
Switching on/off .......... ... .... . 119
Switching rear view camera on/off ... . 122
Partition net . . . . . . . . . . . . . . . . . . . . 70, 71
Parts replacement ......... .. .. .... . 277
Pass-through . . . . . . . . . . . . . . . . . . . . . . . . 73
PASSENGER AIR BAG OFF light ... .. .. . 157
Passive safety system ........ ... .... . 128
Pedals .. .. .. .. . .......... .. .. .. .. . 133
Physical principles of a frontal collision 139
Plastic parts Cleaning ... ................ ..... . 206
Polishing .. .... ............. .. .... . 206
Pollutant filter (automatic AC system) ... 76
Power seat adjustment . . . . . . . . . . . . . . . . . . . . 60
Power locking system . . . . . . . . . . . . . . . . . 32
E mergency locking ...... .. .. .. .. .. .. 38
Power windows .......... .. .. .. .. .. 43
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Selective unlock feature ......... .. .. 37
Settings ... ................ ..... .. 37
Sliding/tilting sunroof ....... .. .. .. .. 43
Power steering
re fer to Electro-mechanical power as-
sist .. ... ................. .. .... . 191
Power window
Conven ience opening/closing . .. .... .. 43
Power windows .............. .. .... .. 43
Child safety locks .......... ... .. .. .. 43
Malfunctions ............. ... .. .. .. 44
Pregnant women Special considerations when wearing a
safety belt . . . . . . . . . . . . . . . . . . . . . . . 143
Proper occupant seating positions .... . 129
Proper safety belt pos it ion . . . . . . . . . . . . 142 Proper seating position
Front passenger . ................. . 130
Occupants ... .. .. .. .............. . 129
Rear passengers .. ............. .... 131
Protecting ...... .. ............. .... 206
Protective liner .. .. ..... ........... .. 74
Q
Quartz clock . . . . . . . . . . . . . . . . . . . . . . . . 12
quattro
refer to all-wheel drive .......... ... 192
Question What happens to unbelted occupants? 139
Why safety belts? . . . . . . . . . . . . . . . . . 138
R
Radiator fan .. .. .. ............. .. .. 223
Rain/light senso r
Headlights .... .. ............. .... . 47
Intermittent (w indshield wipers) ...... 53
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Reading lights . . . . . . . . . . . . . . . . . . . . . . . 50
Rear door sun shade . . . . . . . . . . . . . . 52, 53
Rear fog lights ........... ......... .. 47
Rear lid
Automatic operation . . . . . . . . . . . . . . . . 40
Emergency release . . . . . . . . . . . . . . 41, 42
Escape handle . .. ............. .... . 42
Opening and closing ..... ...... .. .. . 39
Rear light Defective . . . . . . . . . . . . . . . . . . . . . . . . . 21
Rear view camera
Parking mode 1 .. ............. .... 120
Parking mode 2 .. ................ . 121
Rearviewmirror ... ..... ........... .. 51
Rear window heating ............ .... . 78
Rear window sun shade . . . . . . . . . . . . . . . 53
Rear window washer system ....... ... . 53
Recirculation mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Refuell ing .. .. .. .. .. ........... .... 212
Release lever for hood ........... .. .. 214
Remote control Homelink ..... .. ................ . 124