2015 AUDI A3 climate control

64 Warm and cold
Warm and cold
Climate control system
Description
Different systems cou ld be installed.
- manual climate control system* or
- automatic climate control system*
The
clim ate co ntrol system * cools and re­
moves humidity from the air in the vehicle in­
terior. It is the most effective when the win­
dows and panorama sunroof* are closed. If
there is a build-up of heat inside the vehicle,
ventilation can help to speed up the cooling process . For this reason, the windows and
panorama sunroof can be opened from the
outside
r::} page 3 9, Convenience opening/
closing.
The pollutant filter removes pollutants such
as dust and pollen from the air .
A WARNING
Reduced visibility is dangerous and can
cause accidents.
-
- For safe dr iv ing it is very important that
all windows be free of ice, snow and con­
densation.
- Completely fami liarize yourself with the
proper use and function of the heating
and ventilation system and especia lly
how to defog and defrost the windows .
- Never use the windshie ld w iper/w asher
system in freezing weather until you
have warmed the windshield first, using
the heat ing and ventilation system . The washer sol
ution may freeze on the wind­
shie ld and reduce visib ility.
@ 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 q ualified dealership.
- Repairs to the Audi air conditioner re­
quire specia l technical know ledge and
special tools. Contact an authorized Aud i
dealer for ass istance.
@ For the sake of the environment
By reducing the amount of f uel you use,
you also reduce the amount of pollutants
emitted into the air.
(1) Tips
- To prevent interference with the heat ing
and cooling output and to prevent the
w indows from fogging over, the air in­
take in front of the windshield must be
free of ice, snow or leaves.
- Condensation from the cooling system*
can drip a nd form a puddle of wa ter un­
der the vehicle . This is normal and does
not mean t here is a leak.
- The energy ma nagement system may
switch the seat h eating* or rear window
defroster off temporar ily. These systems
are available again as soon as the energy
balance has been resto red.
- Air escapes through vents under the rear
w indow. When plac ing items of cloth ing
on the luggage compartmen t cover, en ­
sure t hat the openings are not covered .

Climate control system controls
Applies to vehicles: with manual climate control system
F ig . 60 Man ual cl ima te con tro l sy ste m•: con tro ls
The functions are contro lled using three dia ls
and buttons. The L ED in a button will light up
when the function is switched on.
The rear window defogger~ ¢
page 68 and
the seat heating~¢
page 68 are described
separate ly.
Manual climat e control system*
For a comfortable temperature, we recom­
mend:
- in warmer times of the year, set the temper­
atu re so that it is only a few degrees be low
the outside tempe ratu re.
- set the blower at a moderate speed
- don't direct the air flow d irectly on the pas-
sengers
Key recognition
Certain setting s are automatically stored and
assigned to the remote control key being
used.
IA /C l Switching the co oling mode* on and
off
The cooling mode only functions w ith the
b lower turned on . The a ir is not cooled and
h umidity is not removed when cooling mode
is switched off . This can caus e fog on the win­
dows. Cooli ng mode switches off a utomat ica l-
W arm and cold 65
ly when the outside temperatu re is below
z ero.
~ Adjusting the blower
To p reven t the w indows from fogg ing over,
the b lower sho uld a lways r un at a low speed.
When the windows are fogged , we recom­
mend using a higher blower speed and turn­
ing the knob to~ -
I• I • I Adjusting the temperature
T he tem pe ra tu re c an a adjusted in small incre ­
ments with the d ial.
Adjusting air distribution and air vents
T he air distribution is adjusted w ith the di­
als ~, ~,~ and~-The setting between~
and ~ provides a comfortable atmosphere in
mo st cases.
In the~ setting, the w indshie ld and side w in­
dows are defrosted o r cleared of condensation
as qu ickly as possib le . The rec ircula tion mode
swi tches off, b ut can be activate d ag ain by
pressing the
1- 1 button.
T he round air ve nts in t he co ckpit are adj usta­
ble ¢
page 68.
To keep the windows from fogg ing in damp
weathe r, we recomme nd ope ning t he side a ir
vents and tilt ing them to the side
¢ page 68 , Adjusting the air vents. ..,.

66 Warm and cold
Foot vents are located under the front seats
to heat the rear of the vehicle.
l= I Switching recirculation mode on and
off
I n recirculation mode, the air inside the vehi­
cle is circu lated and filtered. This prevents the
unfiltered air outside the vehicle from enter­
ing the vehicle interior. We recommend
switching recirculation mode on when driving
through a tunnel or when sitt ing in traffic
~ & .
Automatic climate control system controls
Ap plies to vehicles: with a uto mat ic climate contro l system
Fig. 61 Au toma tic climate contro l system : cont rols
The dial adjusts the temperature and the
blower speed. Press the buttons to turn the
functions on or off. The LED in a button will
light up when the function is switched on .
The rear window defogger~~
page 68 and
the seat heating
[ii~ page 68 are described
separately.
Automatic climate control system
We recommend pressing the IAU TO I button
and setting the temperature to 72 °F (22 °C).
The automatic climate control system auto­
matically maintains a temperature once it has
been set. The temperature of the air from the
vents, the blower speed, and air distr ibution
are also automatically adjusted . In all heat ing
mode funct ions except
defrost, the blower
only switches to a higher speed once the en- Recirculation
mode is switched off in the de­
frost setting ~-
.&_ WARNING
-
You shou ld not use the recirculation mode
for an extended period s ince no fresh air is
drawn in. With the air-conditioning*
switched off, the w indows can fog up,
which increases the risk of an acc ident.
gine coolant has reached a certain tempera­
ture.
Key recognition: Var ious settings are stored
and assigned to the remote control key being
used.
IA/CI Switching the cooling mode on and
off
T he cooling system is turned on and off with
the
IA/Cl button . The air is not coo led and hu­
midity is not removed when cooling mode is
switched off . This can cause fog on the win­
dows. Cooling mode switches off automatical­
ly when the outside temperature is below
zero .

IAUTO I Switching automatic mode on and
off
The automatic mode is turned on using the
IAUTOI button. AUTO mode switches off once
a button in the climate control system is pressed. Automatic mode maintains a con­
stant temperature inside the vehicle . Air tem­
perature, a irflow and air distribution are con­
trolled automat ica lly. When automatic mode
is act ive, p ress ing the
IAUTOI button briefly
activates "eco" mode*
1>. In "eco" mode*, all
settings are lowered slightly to save fue l.
When in "eco" mode*, eco is shown in the dis­
p lay. To exit "eco" mode*, press the
!AUTO I
button again.
I• I • I Setting the temperature
The temperature can be adjusted individually
for the driver and front passenger using the
dials . Temperatures between 60 ° F (+16 °C)
and 84 °F (+28 °C) can be set. Outside of this
range,
Lo or Hi will appear in the climate con­
trol system display. In both settings, the cli­ mate control runs with constantly at the max­
imum cooling or heati ng level. The tempera­
ture is not regu lated .
Synchronization: By pressing the !AU TO I but­
ton for two seconds, the temperature setting
for the driver is transferred to the front pas­
senger's side. This applies a temperature
change to the front passenge r's side.
~ Adjusting the blower
To prevent the windows from fogging over,
the blower should always run at a low speed.
You can adjust the volume of air generated by
the blower to your preference. To have the
blower regulated automatically, press the
IAUTOI button.
Adjusting the air distribution
The air distribution is adjusted with the 121, ~
and IE:! buttons. To have the air distribut ion
regulated automatically, press the
!AU TO I but­
ton .
l) This fu nct io n is not availab le in all coun tries.
Warm and cold 67
T he round air vents in the cockpit are adjusta­
ble ¢ page 68.
T o keep the windows from fogging in damp
weathe r, we recommend open ing the side air
vents and tilting them to the side
¢ page 68, Adjusting the air vents .
Foot vents are located under the front seats
and adjustable vents on the end of the center
console to heat the rear of the vehicle.
I "" MAX ! Switching the defroster on and off
The windshield and side windows are defrost­
ed or cleared of condensation as quickly as
possible. The maximum amount of air flows
main ly from the vents below the windshield.
Recircu lation mode switches off. The tempera­
ture is controlled automatically . In the ~ set­
ting, the
! A/C l cooling mode switches on auto­
matically, depending on the outside air tem­
perature.
The
! AUTO I button switches the defroster off.
l"""I Switching recirculation mode on and
off
The recircu lation mode can be turned on man­
ually or automatically* .
- Switching manual rec irculat ion mode on and
off: Press the
1 - 1 button. The LED light up
when switched on .
- Automatic* recircu lation mode: The recircu­
lation mode must be activated in the MMI.
Select:
! MENUI button> Systems contro l
button or
Car systems > AC > Auto recircu­
lation .
The air quality sensor that is de ­
signed for diesel and gasoline exhaust auto­
matically switches the recirculation mode
on or off depending on the level of pollu­
tants in the outside air.
In recirculation mode, the air inside the vehi-
cle is circulated and filtered. This prevents the unfiltered air outside the veh icle from enter-
i ng the veh icle interior . We recommend
switching recirculation mode on when driving
IJ,-•

68 Warm and cold
through a t unnel or when sitting in traffic
c:;> &. .
The 1- 1 button, IAUTO I or the~ button
sw itches recircu lation mode off.
The system switches to recircu lat ion mode
when dr iving in reverse when the engine is
cold .
.8, WARNING
You should not use the rec irculat ion mode
for an extended period since no fresh air is drawn in. With the air -conditioning sw itch ­
ed off, the windows can fog up, which in­
creases the risk of an accident.
Adjusting the air vents
Fi g. 62 Cockp it: adjust ing the air vents
Fig. 6 3 (Ca nada ve hicles on ly) A ir ve nts: ad justing the
a irflow sett ing A) D iffused B) Direct
The follow ing settings are possibler=> fig. 62:
- @ Air flow amount
- @ Air flow d irect io n
- @
(Canada vehicles only) Air flow settings
(diffused or direct)
To adjust the
air flow amount , turn the ridged
outer adjusting r ing (D r=>
fig. 62. To stop the air flow, turn the adjusting ring a
ll the way to
the right.
T o adj ust the
air flow direction , turn the air
ven t grill insert @.
(Canada vehicles only) To adjust the air flow
se tting s,
pull o r press the m iddle adjustment
ring @
c::> fig. 62:
-Diffu sed air flow (indirect @): Press the
m iddle adjustment ring in lightly
c::> fig . 63.
- Dir ect
air flow (straight @): Pull the center
adjustment ring out lightly
c::> fig . 63 .
Rear window defogger
When a funct ion is switched on, the L ED in
the~ button for ma nual climate co ntrol
c::> page 65, fig. 60 and au toma tic climate con­
tro l
c::>page 66, fig. 61 tu rns on . If the rear
window defogger is act ivated when the igni­
tion is switched on, the battery management
determines based on the battery charge if it is
poss ible to turn on. Otherw ise, the rear win­
dow defogger funct ions with the eng ine run­
ning and switches off automatically after ap­
proximate ly 10 -20 minutes, depending on
the outside temperatu re.
To p revent the rear window defogger from
switching off automatically, press and hold
the~ (word REAR*) button for more than two
seconds. This remains s to red up to approxi­
mately 15 minutes after turning off the igni ­
tio n.
Seat heating
Applies to veh icles : w it h sea t heat ing
The seat heating has three leve ls. T he select­
ed heating level is indicated by the LEDs in the
button (manua l climate control)
c::> page 65,
fig. 60,
(automatic climate control)
c::> page 66, fig . 61 .
.,. To switch the seat heating on, press the [li
button once .
.,. To switch to a lower level , press the
[li but­
ton again .
.,. To switch the seat heating off, press the
lll
button repeatedly unt il the LED turns off . ..,.

Driving with different tires reduces vehi­
cle handling and can lead to a loss of
control.
- If the spare ti re is not the same as the
tires that are mounted on the vehicle -
for example with winter tires -only use
the spare tire for a short period of time and drive with extra care. Refit the nor­
mal road wheel as soon as safely possi­
ble.
- Never drive faster than the maximum
speed for which the tires on your vehicle
are rated because tires that are driven
faster than their rated speed can fail
suddenly.
- Overloading tires cause heat build-up,
sudden tire failure, including a blowout
and sudden deflation and loss of control.
- Temperature grades apply to tires that
are properly inflated and not over or un­
derinflated.
- For technical reasons it is not always
possible to use wheels from other
vehicles -in some cases not even wheels
from the same vehicle model.
- If you install wheel trim discs on the ve­
hicle wheels, make sure that the air flow
to the brakes is not blocked. Reduced air­
flow to the brakes can them to overheat, increasing stopping distances and caus­
ing a collision.
- Run flat tires may only be used on
vehicles that were equipped with them at the factory. The vehicle must have a
chassis designed for run flat tires. Incor­
rect use of run flat tires can lead to vehi­
cle damage or accidents. Check with an
authorized Audi dealer or tire specialist
to see if your vehicle can be equipped
with run flat tires. If run flat tires are used, they must be installed on all four
wheels. Mixing tire types is not permit­
ted.
(D Note
- For technical reasons, it is not generally
possible to use the wheel rims from oth-
Tires and wheels 239
er vehicles. This can hold true for wheels
of the same vehicle type.
- If the spare tire is different from the
tires that you have mounted on your ve­
hicle (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.
- Never drive without the valve stem cap .
The valves could get damaged .
(® For the sake of the environment
Dispose of old tires in accordance with the
local requirements.
Uniform tire quality grading
-Tread wear
- Tract ion AA A B C
- Temperature AB C
Quality grades can be found where applicable
on the tire side wall between tread shoulder
and maximum section width
c;, page 236,
fig. 160.
For example: Tread wear 200, Traction AA,
Temperature A.
All passenger car tires must conform to Feder­
al Safety Requirements in addition to these
grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course.
For example, a tire graded ISO would wear
one and one half (11/2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their use, how­
ever, and may depart significantly from the
norm due to variations in driving habits, serv­
ice practices and differences in road character-
istics and climate.
ll-
•
•
•

256 Fuses and bulbs
Interior fuse assignment
No. Equipment Ampere
F14
Climate control system
30 blower
F15
Electronic steering column
10 lock
F16 MMI area 7.5
F17
Instrument cluster 5
F18
Rearv iew camera 7 .5
F19
Convince key system control
7.5 module, tank system
F23 Right exter ior lights 40
F24
Panorama sunroof 20/30
F25
Door/driver's side doors (for
30 example power windows)
F26 Seat heating 30
F27
Sound-amp lifier 30
F29
Interior lights 7.5
Fig. 176 Vehicle inte ri or : fuse assignment F31 Left exter ior lights 40
No . Equipment Ampere F32 Driver assista nce systems 7.5
F2
Seat adjustment 10 F33 Airbag 5
F4
MM controls, MMI compo-
7.5 nents
F5 Gateway 5
Button lighting, coils for
socket relays, interior sound,
F34 back-up light switch, tern-7.5
perature sensor, o il level
F6 Ant i-theft alarm system 5 sensor
Climate/heating control, se-
Diagnosis, headlight range
le ctor lever (automatic
F7 transmission), parking heat -10 F35
control system, air quality
10 sensor,
automat ic dimming
er, rear window heater relay
rearview mirror
coil
Diagnosis, electrical parking
F36
Right cornering light/ right
15 LED-headlight
F8
brake switch, light switch,
10 rain/light sensor, interior
lighting
F9
Steering column switch
1 module
F37
Left corner ing light/ left
15 LED-headlight
Door/front passenger's side
F39 doors (for example, power 30
windows)
Fl0 D isp lay 5
F40 Sockets 20
Fll
Reversible driver's safety
25 belt tensioners F41 Reversible front passenger 's
25 side safety belt tensioners
Fl2 MMI area 15/20
F42 Central locking buttons 40
Fl3
Adaptive dampers control
20 module
F43 Windsh ield washer system 30
F44
all wheel drive 15
F45
Power driver's side seat 15

272 Index
A
A/C (a utomatic cl imate control system)
A/C (manual cl imate control system)
ABS 66
65
refer to An
ti-lock braking system . . . . . 185
Accessories . . . . . . . . . . . . . . . . . . . . S6, 270
Active lane ass ist . . . . . . . . . . . . . . . . . . . . 94
Activating vibration wa rning .. .. .. .. .. 96
Adj ust ing steering t ime .... .. .. .... .. 96
C lean ing the camera area .. .. .. .. .. . 20 2
Dr iver messages . . . . . . . . . . . . . . . . . . . . 95
I ndicator light . . . . . . . . . . . . . . . . . . . . . 95
switch ing on and off . ... .. .. .. .... .. 95
Adapt ive cruise control . . . . . . . . . . . . . . . . 82
Automatic t ra nsm ission ... .. .. .... .. 86
C lean ing the senso r ..... .. .. .. .. .. . 202
D river messages . . . . . . . . . . . . . . . . . . . . 88
General Information . . . . . . . . . . . . . . . . 82
Request for driver intervention . . . . . . . . 88
Stop-and-go-traffic . . . . . . . . . . . . . . . . . 86
Adapt ive dampers .......... .. .. .... . 102
I ndicator light . .. ..... ... .. .. .... .. 25
Adapt ive light . . . . . . . . . . . . . . . . . . 42, 102
I ndicator light . . . . . . . . . . . . . . . . . . . . . 25
Adding W indshield washer fluid ..... .. .... . 224
Ad justing ai r dist ribution (Climate con trol
system) ..... ... .. ..... ... .. .. .... .. 67
Ad justing a ir vents ......... .. .. .... .. 68
Ad justing a ir vents (manual climate co n-
trol system) . . . . . . . . . . . . . . . . . . . . . . . . . 65
Ad justing automatic headlights . .. ... ..
44
Ad justing the center conso le lighting .... 45
Ad justing the temperat ure
manual climate control system . . . . . . . . 65
advanced key
refer to Convenience key . . . . . . . . . . . . . 73
A irbag .. .. .. ... .......... .. .. .. .. . 14 0
I nd icator ligh t . . . . . . . . . . . . . . . . . . . . . 2 1
A irbag system ... ....... ... .. .. .. .. . 161
Advanced Airbag System ....... .. .. . 144
Advanced Airbag System components . 148
Ca re . .. .. .. ............. .. .. .. .. . 156
C hi ldren . .... ........... .... .... . 168
C hil d restra ints ........... .. .. .... . 168
Components (front airbags) . ... .. .. . 1 48 Danger of fitting a ch
ild seat on the front
passenger seat ... .. ... ..... ... .. .. 142
Disposa l .. .. .. .. ... .. ..... ... .. .. 156
Front a irbags . . . . . . . . . . . . . . . . 144, 146
How do the front airbags work? .. .... 150
How many a irbags does my vehicle
have? ...... .. .. .. ... ... ... .. .. .. 148
How the Advanced Airbag System com-
ponen ts wo rk togethe r ......... .. .. 150
Im port ant sa fe ty inst ru cti ons on the
k nee airbag system .. .. ..... ... .. .. 159
Impo rtant things to know .. ... ... . .. 140
Knee airbags ..... .. ... ..... ... .. .. 157
Monitoring .... .. ............. .... 152
PASSENGER AIR BAG OFF light ... .... 153
Repairs ... .... .. ............. .... 156
Safety instructions ................. 155
S ide a irbags ... .. ... .. .. ... ..... .. 160
S ide curtain airbags ... ...... ... .. .. 163
Warning/Indicato r lights ..... .. .. .. 152
When must the system be inspec ted? . 152
Alarm system
refer to Anti-theft alarm system . . . . . . . 31
Alcantara clean ing .............. .... 204
Al ignment pi n (changing the whee l) .. .. 24 7
All-weather lights (LED headlights) . .. .. . 42
All-wheel drive Winter tires ..... .. ... ..... ... .. .. 240
All wheel d rive . . . . . . . . . . . . . . . . . . . . . 190
Alternator
refer to A lternator (indicator light) . .. . 20
Alternato r (indicato r light) .. ... .. .. .. . 20
Amb ient lighting .. ............. .... . 45
Anti-free ze
refer to Eng ine coolant
216
Anti -lock b raking system . ..... ... .. .. 185
Indicator light ... ... .. ..... .... . .. . 22
An ti-s lip reg ulatio n ............. .. .. 185
Indi cator ligh t ... ............. .. ... 22
Anti -theft a la rm system . . . . . . . . . . . . . . . 31
Anti-theft systems Electronic immob ilizer .. ..... ... .. .. . 36
Artific ia l lea ther cleani ng ........... .. 20 4
ASR
refer to Anti -slip regulation
A udi active lane assist 185
refer to Active
lane ass ist ....... .... . 94