2018 AUDI A4 air filter

Warm and cold
Warm and cold
Climate control system
Description
The climate control system warms, cools and re­ moves humidity from the air in the vehicle interi­
or. It is the most effective when the windows and
sunroof * are closed. If there is a bui ld-up of heat
inside the vehicle, ventilation can he lp to speed
up the cooling process.
I n all heating mode f unctions except for
defrost,
the blower only switches to a higher speed once
the engine coolant has reached a sufficient tem­
perature .
Pollutant filt er
The po llutant filter removes poll utants such as
dust and pollen from the a ir .
Ke y recognit ion
The climate control settings are automatically
stored and assigned to the remote contro l key
that is in use .
76
® For the sake of the environment
-If you would like to reduce fuel consump­
t ion, sw itch the air conditioning
off. This
will also reduce emissions.
- In veh icles with a diesel engine, you can
switch the auxiliary heater
off in the Info­
tainment system.
(D Tips
- To prevent interference with the heating
and cooling output and to prevent the win­
dows from fogging over, the air intake in
front of the windshie ld must be free of ice,
snow or leaves.
- Condensation from the cooling system can
dr ip and form a pudd le of water under the
vehicle . This is norma l and does not mean
there is a leak.
- The energy management system may tem­ porarily switch
off certain functions, such as
the seat heating* o r rear window defogger.
T hese systems are ava ilable again as soon
as the ene rgy supply has been restored.

Warm and cold
system operates most efficiently in eco cooling
mode.
A/C MAX cooling mode*
You can switch the maximum cool ing mode on or
off using the rocker switch@. Th e air is not
coo led and humidity is not removed when cooling
mode is switched off. This can cause fog on the
windows. Cooling mode switches off automati­
cally when the outside temperature is below
zero. When the cooling mode is switched on, the
vehicle interior is cooled as quickly as possible
and dehumidified .
c:E) Recirculation mode
In recirculation mode, the air inside the vehicle is
circu lated and filtered. This prevents the unfil­
tered air outside the vehicle from entering the
vehicle interior. Switching recirculation mode on
when dr iv ing through a tunnel or when s itting in
traffic is recommended
Q &, .
Using the button, recirculation mode is~ using
the button. You can also switch the recirculation
mode off by pressing the knob (D or the ~ but­
ton.
AUTO
Automatic mode
Automatic mode maintains a constant tempera­
ture inside the vehicle. Air temperature, airflow
and air distribution are controlled automatically .
You can switch automatic mode on or off by
pressing the
knob@.
Temperature
You can adjust the temperature between 60°F
( + 16°()
and 84°F ( +28°() by turn ing the knob
(D . Outs ide of this range, LO or HI will appear in
the climate control system display . In both set­
tings, the climate control runs constantly at the
maximum cooling or heating level. The tempera­
ture is not regulated.
The temperature can be adjusted in the rear us­
ing the rear contro ls
Q fig. 91.
86'~ Blower
You can adjust the vo lume of air generated by the
blower to your preference using the rocker switch
@ . The blower should always run at a low setting
78
to prevent the windows from fogging and to en ­
sure a continuous exchange of air inside the vehi­
cle. To have the blower regulated automatically,
press one of the knobs
(D .
Air distribution
You can use the rocker sw itches @to adjust the
vents where the air will flow out of. Press the
rocker switches @repeatedly unti l the desired
air distribution setting is displayed in the climate
control system controls. To have the air distribu­
tion regulated automatically, press one of the
knobs
(D .
""lll"' OPEN/CLOSE the wide vent
You can open and close the wide vent in the cock­
pit using the rocker switch ®·
JI~ Seat heating and ventilation*
If you press the button J ,J, the seat heating/
ventilat ion is switched on at the highest leve l (3) .
The LEDs indicate the temperature level. To re­
duce the temperature, press the button again. To
switch the seat heating/ventilation off, press the
button repeatedly until the LED turns
off.
3% Defrosting
The windshield and side windows are defrosted
or cleared of condensation as quick ly as possible .
The maximum amount of air flows mainly from
the vents below the windsh ield. Recirculation
mode switches off. The temperature should be
set at
+72°F (+22°() or higher . The temperature
i s controlled automat ically .
Defrost is switched on and off
3% using the but­
ton. You can switch the function off by pressing a knob
(D .
Applies to vehicles with windshield defogger: the
windshield defogger switches on automatically
when outside temperatures are low. If you would like to sw itch the windshield defroster on man­
ually, press the
3%. The LED in the button blinks.
ClWREAR Rear window defogger
Press the button [email protected] switch the rear window de­
fogger on. It on ly operates when the engine is
running. It switches off automatically after
10 to .,,.

a co .... N ,....
N .... 0 0
3 co
Consumer Information
Warranty coverages
Y our Audi is co vered b y the following war ran­
tie s:
- New Vehicle Limited Warranty
- Limited Warranty Against Corrosion Perfora-
tion
- Emissions Control System Warranty
- Emissions Performance Warranty
- California Emissions Control Warranty (USA
vehicles only)
- California Emissions Performance Warranty
(USA vehicles only)
Detailed information regard ing your warranties
can be found in yo ur
W arranty & M ainten ance
bookl et.
Operating your vehicle
outside the U.S.A. or
Canada
Government reg ulations in the Un ited States and
Canada require that automobiles meet specific
emission regulations and safety standards.
Therefore, vehicles built for the U .S.A. and Cana­
da d iffer from vehicles sold in other countries.
I f you p lan to take your vehicle outside the conti­
nenta l limits of the United States or Canada,
there is the poss ibility that:
- u nleaded fue ls for vehicles with cata lytic con­
verter may not be available;
- fuel may have a considerably lower octane rat­
i ng . Imprope r fuel may ca use engine damage;
- service may be inadequate due to lack of p roper
service facilities, tools or testing eq uipment;
- r eplacement parts may not be readily ava ilable.
- Navigat ion systems for veh icles built for the
U .S .A . and Canada will not necessa rily work in
Eur ope, and may not wo rk in other countries
o utside of North Amer ica.
Consumer Inf ormation
(D Note
Audi cannot be respons ible for mechanical
damage that could resu lt from inadequate
fuel, service or parts ava ilability.
Audi Service Repair
Manuals and Literature
Audi Official Factory Service Manuals and L itera ­
ture are published as soon as poss ible after mod­
el i ntroduction. Service Ma nua ls and literature
are avai lab le to order from the Audi Tec hni cal Lit ­
erature Orde ring Center at :
www.audi.t e chlit eratur e.com
Maintenance
General
Your vehicle has been designed to he lp keep
maintenance requirements to a min imum. How­
ever, a certain amount of regular maintenance is
still necessary to assure your veh icle's safety,
economy and reliab ility . For detailed vehicle
maintenance consult your Wa rranty
& Mainte­
nance boo klet .
Und er diff icult op erating condition s, for exam­
ple at extremely low outside temperatures, in
very dusty regions, when towing a trai le r very fre­
quently, etc., some se rvice work shou ld be pe r­
fo rmed between the in terv als specified. This ap ­
plies particularly to:
- oil changes , and
- cleaning or replac ing the a ir filter .
(® For the sake of the environment
By regularly maintain ing your vehicle, you
help make sure that emiss ion standards are
maintai ned, thus min imizing adverse effects
on the environment .
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated
fuel injection and emission control systems, and
the genera lly increas ing techn ica l complexity of
""'
383

Index
Cooling mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . .
77, 78
Cooling system
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . .
329
Coolant temperature indicator . . . . . . . . . . 11
Crosshairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Cruise control system . . . . . . . . . . . . . . . . . . 102
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Current consumption . . . . . . . . . . . . . . . . . . . 17
D
Data connection . . . . . . . . . . . . . . . . . . . . . . 195
Data protection . . . . . . . . . . . . . . . . . . . 196, 227
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . 153
Date ..... ..... .. ................ . 17,248
Date display . . . . . . . . . . . . . . . . . . . . . . . . . 248
Daytime running lights . . . . . . . . . . . . . . . . . 54
Declaration of compliance
Audi adaptive cruise control . . . . . . . . . . .
386
Audi side assist . . . . . . . . . . . . . . . . . . . . . 386
Ce ll phone package . . . . . . . . . . . . . . . . . . 386
Convenience key . . . . . . . . . . . . . . . . . . . . . 386
Electronic immobilizer.. . . . . . . . . . . . . . . 386
Garage door opener (Home Link) . . . . . . . .
386
Remote control key . . . . . . . . . . . . . . . . . . 386
D EF
refer to AdBlue ... ............ .... .. . 319
Defrosting (windows) . . . . . . . . . . . . . . . . . . . 78
DEF (instrument cluster) . . . . . . . . . . . . . . . . 12
Demo mode
refer to Presentation mode . . . . . . . . . . . . 212
Destination on the map
Using the MMI touch . . . . . . . . . . . . . . . . .
206
Determining correct load limit . . . . . . . . . . 348
Diesel
Diese l particulate filter . . . . . . . . . . . . . . .
322
Prewarming . . . . . . . . . . . . . . . . . . . . . . . . . 83
Diesel Exhaust Fluid (DEF)
refer to AdBlue.. ................ .... 319
Diesel fuel ... .. .. ... .......... .. .. .. . 316
Digita l compass . . . . . . . . . . . . . . . . . . . . . . . 63
Digital Rights Management . . . . . . . . . . . . . 227
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Dimming the exterior mirrors . . . . . . . . . . . . 59
Dimming the rearview mirror . . . . . . . . . . . . 59
390
Directory
refer to Contacts . . . . . . . . . . . . . . . . . . . . 183
D isplay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Infotainment system display . . . . . . 156, 249
Instrument cluster . . . . . . . . . . . . . . . . . . . . 16
Multifunction steering wheel . . . . . . . . . . . 13
Versions (MMI) . . . . . . . . . . . . . . . . . . . . . . 156
D istance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Doors
Emergency locking . . . . . . . . . . . . . . . . . . . .
42
Driver information system . . . . . . . . . . . . . . . 17
Changing views . . . . . . . . . . . . . . . . . . . . . . 13
Energy consumers . . . . . . . . . . . . . . . . . . . . 18
On-board computer . . . . . . . . . . . . . . . . . . . 17
Outside temperature display . . . . . . . . . . . . 10
Service interval display . . . . . . . . . . . . . . . 333
View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Driver seat
refer to Seating position 255
Drives
refer to Media ... .. .. ........... 227, 236
Drive select
refer to Aud i drive select . . . . . . . . . . . . . . 133
Driving economically . . . . . . . . . . . . . . . . . . .
80
Driving offroad . . . . . . . . . . . . . . . . . . . . . . . . 90
Driving safe ly . . . . . . . . . . . . . . . . . . . . . . . . 254
Driving through water . . . . . . . . . . . . . . . . . . 80
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DVD drive (med ia drives) . . . . . . . . . . . . . . . 228
Dynam ic steering . . . . . . . . . . . . . . . . . . . . . 134
Dynamic volume
refer to System volume . . . . . . . . . . . . . . . 252
E
E-mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Economical rou te .. .. .. ............. .. 211
eco (button) . . . . . . . . . . . . . . . . . . . . . . . . . . 77
EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Electromechanical parking brak e . . . . . . . . . 88
Electromechanical steering . . . . . . . . . . . . . 1 SO
Electronic immobili zer . . . . . . . . . . . . . . . . . .
38
E lectronic stabilization control
refer to ESC . . . . . . . . . . . . . . . . . . . . 146, 147
Emergency assistance . . . . . . . . . . . . . . . . . 360
Emergency braking function . . . . . . . . . . . . . 88

Panorama glass roof. . . . . . . . . . . . . . . . . . . . 50
Emergency operation........... ..... .. 51
Parental control
DVD ... .. .. .. .. ........... .. .. .... . 239
Parking aid
Cleaning sensors/camera . . . . . . . . . . . . .
355
Parking brake
refer to Electromechanical parking brake . 88
Par king lights . . . . . . . . . . . . . . . . . . . . . . . . . 54
Parking location Audi connect vehicle control . . . . . . . . . . .
199
Parking system
refer to Parking systems ....... .. . 137, 138
Parking systems . . . . . . . . . . . . . . . . . . . . . . 136
Peripheral cameras . . . . . . . . . . . . . . . . . . 140
Rearview camera . . . . . . . . . . . . . . . . . . . .
138
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Trai ler hitch . . . . . . . . . . . . . . . . . . . . . . . . 144
Particulate filter (diesel) . . . . . . . . . . . . . . .
322
Partition net . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Parts replacement . . . . . . . . . . . . . . . . . . . . 385
Pass-through . . . . . . . . . . . . . . . . . . . . . . . . . 73
PASSENGER AIR BAG light . . . . . . . . . . . . . . 283
Paths (Owner's Manual) . . . . . . . . . . . . . . . . 158
Pause (audio/video file) . . . . . . . . . . . . . . . . 236
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Peripheral display . . . . . . . . . . . . . . . . . . . . . 13 7
Personal route assistance . . . . . . . . . . . . . . 210
Phonebook
refer to Contacts . . . . . . . . . . . . . . . . . . . . 183
Physical princ iples of a frontal collision . . . 264
Picture format (video) . . . . . . . . . . . . . . . . .
239
Playback (media) . . . . . . . . . . . . . . . . . . . . . 236
Playlist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Point of interest . . . . . . . . . . . . . . . . . . . . . . 207
Point of interest search . . . . . . . . . . . . . . . . 208
also refer to Point of interest . . . . . . . . . . 207
Polishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Pollutant filter (automatic A/C system) . . . . 76
Predictive efficiency assist . . . . . . . . . . . . . . 107
Pregnant women Special considerations when wearing a safe -
a ty belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 co .... ~ pre sense
:::l refer to Audi pre sense . . . . . . . . . . . . . . . 120 0
3 Presentation mode . . . . . . . . . . . . . . . . . . . . 213
co
Index
Presets list
refer to Favorites . . . . . . . . . . . . . . . . . . . . 225
Presets (radio) . . . . . . . . . . . . . . . . . . . . . . . 225
Pressure
Tire pressure monitoring system . . . . . . .
352
Prewarming . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Program guide
Radio .... .... .. .. ............... ..
223
Prompt
refer to Command (voice recognition sys -
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
167
Proper occupant seating positions . . . . . . . 255
Proper safety be lt pos ition . . . . . . . . . . . . . . 267
Proper seating position
Front passenger . . . . . . . . . . . . . . . . . . . . .
256
Occupants . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Rear passengers . . . . . . . . . . . . . . . . . . . . . 257
Protecting . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Q
quattro
Se lective wheel torque control ....... . .
Question 150
146
What happens to unbelted occupants?
264
R
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Additional station information . . . . . . . . . 224
Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Radio text . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Station list . . . . . . . . . . . . . . . . . . . . . . . . . 222
Rain/l ight sensor
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Interval mode (wipers) . . . . . . . . . . . . . . . . 60
Raising the vehicle . . . . . . . . . . . . . . . . . . . .
377
Random
refer to Shuffle . . . . . . . . . . . . . . . . . . . . . 239
Range (fue l level) . . . . . . . . . . . . . . . . . . . . . . 17
Reading lights . . . . . . . . . . . . . . . . . . . . . . . . . 5 7
Rear fog lights . . . . . . . . . . . . . . . . . . . . . . . . 54
Rear lid Escape latch . . . . . . . . . . . . . . . . . . . . . . . . .
46
also refer to Luggage compartment lid 43, 44
Rear Seat Entertainment preparation
refer to Audi Entertainment mobile . . . . . 235
395