heating AUDI A3 2015 User Guide

can reach the catalytic converter . This
could result in overheating of the con­
verter, requ iring its replacement.
- To assure efficient operation of the Emis­
sion Control System :
- Have your veh icle ma inta ined properly
and in accordance with the service rec­
ommendations in your Wa rranty
&
Ma intenance booklet.
- Lac k of proper maintenance as well as
improper use of the vehicle will impa ir
t he funct ion of the emission control
system and cou ld lead to damage.
@) For the sake of the environment
Even when the Emission Cont ro l System is
operating properly, t he exhaus t gas can
have a s ulfu r-like exhaust gas smell unde r
some operating states. This depends on
the s ulfur content of the fue l being used .
Using a different brand of fuel may help,
or filling the tank w ith lead-free super
grade gasoline.
Placing your vehicle
out of service.
I f you wou ld like to take your vehicle out of
service for a longer t ime, contact your aut hor­
iz ed A udi dealer or qualified repair facility .
They will advise you o f important meas ures,
such as cor rosion protection, maintenance
and storage procedures. Also follow the infor ­
mat ion about the battery¢
page 220.
Operate your vehicle
economically and
minimize pollution
General
Your personal style of driving will determine
the economy of your vehicle , as well as ex­
haust and noise levels.
F ue l economy, environmental impact, and
wear on your engine, brakes and t ires largely
depend on three factors:
Dri ving and the en vironm ent 195
-your personal d riving s tyle
- operati ng conditions
- technical limitat io ns
If you ant ic ipate what you need to do next and
drive econom ically , yo u can easily cut your
fuel consumpt ion by 10-15 percent . This sec­
tion w ill give you some tips on how you can
help the env ironment and your po cketbook.
(D Tips
The consumption estimates as published
by ENVIRO NM EN TAL PROT ECTI ON AG ENC Y
( E PA) and Transpo rt Canada may no t cor re­
spond to your actual consump tion on the
r oad, which will va ry depending upon vehi ­
cle load and speed, road and weather con­
ditions, trip length, etc.
Drive smoothly and keep a lookout
ahead
Vehicles use the most fuel when they are ac­
celerating.
.. Avo id u nnecessary accelerating and brak ing.
Vehicles use the mos t fu e l when they are ac­
ce lerating. If you anticipate what is going to
happe n next, you will need to brake less and,
th us, acce lerate less. Let the vehicle coast
whenever possible -for examp le when you see
that the next traff ic light is red.
Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage.
.. Try and keep well below your car's maximum
speed.
Acce le rat ing gently re duces fue l cons ump ­
tion, eng ine wear, and does not disturb the
environment .
Fuel consumpt ion, exhaust em iss ions an d en­
gine noise inc rease disproportionate ly at high
speeds . If you drive at approximately three
quarte rs of top speed, fuel consumption wi ll
be reduced by one ha lf. Never drive faster
IJ,-
•
•
•

To avoid scratches, move the scraper only in one direction and not back and
forth .
- Never remove snow or ice from door
w indows and mirrors using warm or
hot water because this could cause
cracks to form.
- To avoid damage to the rear window
defogger, do not apply any stickers on
the heating wires on the ins ide of the
w indow .
- Deco rati ve parts /tr im
- Never use chrome care o r cleaning
products.
- Paint
- To reduce the risk of scratches, the ve- hicle must be free of dirt and d ust be­
fore polishing or waxing.
- To prevent paint damage, do not polish
or wax the vehicle in direct sunlight .
- To reduce the risk of paint damage, do not polish away rust spots .
- Displa ys
- To avoid scratches, do not use dry
cleaning methods on displays.
- Controls
- Make su re that no flu ids enter the con-
trols, because this cou ld cause dam­
age.
- Safe ty belt s
- Do not remove the safety belts to clean
them.
- Never clean safety belts or their com­
ponents chemically or with corrosive
fluids or solvents and never a llow
sharp objects to come into contact
w ith the safety belts. This cou ld cause
damage to the belt webbing.
- If there is damage to the webb ing, the
connect ions, the ret ractors or the buck ­
les, have them replaced by an author­
ized dea le r.
- Textile s/artificial leather /Alcantara
- N ever treat artifici al lea ther/Alcantara
w ith leather care products, solvents,
floor polish, shoe polish, spot remove
or similar products.
Caring and cle anin g 205
- Have a specialist remove stubborn
stains to prevent damage.
- N ever use s team cleaners, brushes,
hard sponges, etc . when cleaning.
- Do not turn on the seat heating* to dry
the seat.
- Obje cts w ith sharp edges s uch as zip­
pers, rive ts on clothing or be lts can
cause damage to the surface.
- Open hoo k and loop fasteners, for ex­
ample on cloth ing, can damage seat
covers. Make sure hook and loop fas­
tene rs a re closed.
- Natural leather
- Never treat leather w ith solvents , floor
polish, shoe polish, spot remover or
similar products .
- Objects w ith sharp edges such as zip­
pers, rivets on clothing or be lts can
cause damage to the surface .
- Never use steam cleaners, brushes, hard sponges, etc . when cleaning.
- Do not turn on the seat heating * to dry
the seat.
- To help prevent the leather from fad­
ing , do not leave the vehicle in d irect
sun light for long per iods of t ime . If
leaving the vehicle par ked for long pe­
riods of time, you should cove r th e
le athe r to protect it from direct sun­
light.
(D Tips
- I nse cts are easier to remove from paint
t ha t has been freshly waxed.
- Regular wa xing can prevent rust spots
from forming.
•
•
•

216 Check ing and F illin g
@ For the sake of the environment
-Oil should never enter the sewer system
or come into contact with the ground .
- Pay attentio n to lega l requ irements
when disposing of empty oil containers .
Changing the engine oil
We recommend that have your oil changed by
an authorized Audi dealer or a qualified serv­
ice station.
Before you check anything in the engine com­
partment,
a lways r ea d and heed all WARN­
ING S
r=>page 210.
The engine oil must be changed according to
the intervals specified in you r Warranty
&
Maintenance book let. This is very important
because the lubricating properties of oil di­
minish gradua lly during norma l veh icle use.
Under some circumstances the engine oi l
should be changed more frequently. Change
oil more often if you drive most ly short dis­
tances, operate the vehicle in dusty areas or
under predominantly stop-and-go traffic con­
ditions, or have your vehicle where tempera­
tures remain below freezing for extended pe­ riods .
Detergent additives in the oil will make fresh
oil look dark after the eng ine has been run­
n ing for a short time. This is normal and is not
a reason to change the oil more often than recommended.
Because of the problem of proper disposal,
along w ith the special tools and necessary ex­
pertise required, we strongly recommend that
you have you r o il changed by an author ized
A udi de ale r or a q ual ified servi ce station.
If yo u choo se to c hang e your o il yo urse lf,
please note the following important informa­
tion :
.8, WARNING
To reduce the ris k of persona l injury if yo u
m ust change the engine oil in your veh icle
yourself : -
Wear eye protection .
- To reduce the risk of burns from hot en -
gine oi l, let the engine cool down to the
touch.
- When removing the oil drain p lug with
your fingers, stay as far away as possible.
Always keep your forearm parallel to the
ground to help prevent hot oil from run­ning down your arm.
- Drain the oil into a container designed
for this purpose, one large enough to
hold at least the tota l amount of oil in
your engine.
- Engine oil is poisonous. Keep it we ll out
of the reach of childre n.
- Continuous contact with used eng ine o il
is harmful to your sk in . Always protect
your skin by washing oil
off tho roughly
with soap and water.
(D Note
Never mix oil additives with your engine
oil. These additives can damage your en­
gine and adversely affect your Aud i Limit­
ed New Veh icle Warranty.
@ For the sake of the environment
- Before changing your oil, first make sure
yo u know where you can properly dispose
of the used oil.
- Always dispose of used eng ine oil proper­
ly. Do not dump it on garden soil, wood­
ed areas, into open st reams o r down
sewage drains.
- Recycle used engine oil by taking it to a
used eng ine oil collect io n fac ility in you r
are a, or contact a se rvice station.
coolant system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro­ tects the engine from freezing in the winter.
The cooling system is sealed and genera lly re-
quires little attention. .,..

The cooling system has been filled at the fac­
tory with a permanent coolant which does not need to be changed. The coolant consists of a
mixture of spec ia lly conditioned water and the
manufacturer's glycol-based coolant addi-
tive Gl3 antifreeze with anticorros ion addi ­
tives (50% fo r USA models; 60% for Canadian
models) . This mixture both assures th e neces­
sary frost protect ion a nd p rotects me tal com ­
ponents in the engine 's coo ling system from
corrosion and scaling.
It al so raises the boil­
ing po int o f the coo lant .
D o no t reduce the concentration of t he coo l­
an t in the summer by ad ding plain w ate r.
The
proportion of coolant additive must be at
lea st 50 % but not more than 60%
to main­
tain ant ifreeze protection and cooling efficien­
cy. If the coolant frost protect ion is too low ,
the coolant cou ld free ze and damage the veh i­
cle heating and eng ine cooling system.
F or yea r-round driv ing, antifreeze is added at
the facto ry for temperatures down to:
- -3 1 °F ( -3 5°C) USA
- -4 0°F ( -4 0°C) Canada.
If you must add coolant, use a m ixture of wa ­
ter and coolant addit ive. M ixing the coolant
addi tive wi th dist illed wate r is recom mend ed.
_& WARNING
Bef ore yo u check any thing in the e ngine
comp artme nt, alw ays re ad and hee d all
WARN INGS
¢page 210.
(D Note
- B efo re winter sets in, have the coolant
c hec ked to see if the c oolan t ad dit ive i n
you r vehi cle is su fficient t o mee t the cl i­
mate cond itions. This is especially impor ­
tant if yo u live in a region whe re the win­
ter is extremely cold. If necessary, in ­
crease the proport ion of coolant additive
to 60%.
- W hen addi ng coolant additive to your
cooling system, remember:
- We recommend using only coolant ad­
ditive Gl2 ++ o r Gl3 ( check t he label)
-
Che cking and Fillin g 21 7
for you r vehi cle. This coolan t additive is
avai lab le at authorize d Audi dea le rs .
Ot her types of antifreeze ca n sig nifi­
cantly reduce corros io n protection. The
res ulting corrosion can cause a loss of
coolant and serio us e ngine da mage .
- Do not add any type of rad iator leak seal­
ant to you r vehicle's engine coolant .
Add ing radiator repair flu id may adverse ­
ly affect t he function and performanc e of
yo ur cooling sys tem and co uld resu lt i n
damage not covered by yo ur New Ve hicle
L imi ted W arranty.
Adding coolant
Fi g. 152 En gine co mpa rtment: markin gs on t he coo l­
an t e xpan sio n t ank
Befo re you check a nyt hing in the eng ine com ­
partment ,
alway s read and heed all WARN­
INGS ¢ page 210.
Checking the engine coolant level
.,. Park yo ur vehicle o n a level su rf a ce .
.,. Switch t he ignition off.
.,. Read t he coolant leve l on the coo lant expan­
sion tank ¢
fig. 152. The coolant leve l must
be between the markings when the engine
in cold. When the engine is warm it can be
slightly above the upper mark ing .
Adding coolant
Req uirement : There m ust be a res idual
amount of coo lant in the expansion tank
c::> Q) .
.,. Le t the engine cool down.
.,. Place a clot h over the coo lant expans ion
tank cap a nd u nscrew the cap co unterclock-
wise
c::> _& . ..,.

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

No. Equ ipment Ampere
F49 Starter, clutch sensor
5
FS3 Rear window defogger 30
The power seats* are protected v ia
circ uit
br ea ker s
that automatically sw itch on after a
few seconds after the overload has been re­
d uced.
(D Tips
Note that the following table was accurate
at the time of pr int ing and is subject to
change.
Left engine compartment fuse
assignment
F ig. 177 Eng ine compartment: fuse assignment
M ,.._
-0
!
No. Equ ipment Ampere
Fl ESC control module 40
F2 ESC control module
40
F3 Eng
ine control module (gas-
15/30
oline)
Engine cooling, engine com-
F 4 ponents, auxiliary heater
5/10
coil relay (1 +2), secondary
a ir injection pump relay
FS Eng
ine components, tank
7,5/10/
system 15
Fuse s and bulb s 257
No. Equipment Ampere
F6 Brake light sensor
5
F7 Engine components, water 7,5/10/
pumps
15
F8 Lambda sensor 10/15
Engine components, ex-
F9 haust door, glow time con-
5/10/20
tro l module, SU LEV valve
FlO Fuel
injectors, fuel control
15/20
module
Fl l Auxiliary heater heating ele
-
40
ment 2
F12 Auxilia
ry heater heat ing ele-
40
ment 3
F13 Automatic transmiss
ion con-
15/30
trol module
FIS Horn 15
F16 Ignit ion coil 20/7.5
F17 ESC contro
l modu le, engine
7.5
control module
F18 T
ermina l 30 (reference volt-
5
age)
F19 Windshield wipers
30
F20 Horn 10
F22 Termina
l SO diagnosis
5
F23 Starter 30
F24 Auxiliary heater heating ele-
ment 1 40
F31 Vacuum pump 15
F32 L ED head lights
5
(i} Tips
Note that the follow ing tab le was accurate
at the time of printing and is subject to
change.

Index 281
-----------------------------------.......
Remote control
refer to Remote control key . . . . . . . . . . 31
Remote control key . . . . . . . . . . . . . . . . . . . 3 1
L ED . .. .. .. .... ........... .. .. 3 1,33
Replacing the ba ttery ..... .. .. .. .. .. 33
Synchron izat ion ... .... ... .. .. .. .. .. 33
un locking/ locking ..... ... .. .. .. .. .. 33
Repa ir manua ls ............ .... .. .. . 268
Repairs Airbag system ........... .... .. .. . 156
Replacement key . . . . . . . . . . . . . . . . . . . . 31
Replacing Lig ht bulbs . ............. .. .. .. .. . 258
T ires and whee ls ......... .... .. .. . 23 7
Replacing w indshield wiper blades ...... 47
Report ing Safety Defects . ... .. .. .. .. . 129
Reset b utton (tr ip odomete r) . . . . . . . . . . 11
Resett ing trip odometer ..... .. .. .. .. .. 11
Re tract
New brake pads . . . . . . . . . . . . . . . . . . . 187
Retractor ...... .............. ... ... 134
Reverse (automat ic transmiss ion) . .. .. . 105
Revers ible ma t ............ .... .. .. .. 62
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
L oading .. ... ............. ... ... ... 60
Roof weight .... .. .... .... . .. .. .. .. 60
s
Sadd lebag ..... ................ .... . 62
Safe driving habits . ..... ... .. .. .. ... 121
Safety Airbag-System ........... .... .. ... 1 40
Belts . ..... .. ... .. ..... ... .. .. ... 131
Safety belt position ............ ... .. 135
Safety belt he ight ad justment .. . ... . 137
S afety belts worn by p regnant women . 136
Safety belt pretens ioner ..... .. .. .. .. . 13 7
Service and disposal ...... .. .. .. .. . 138
Safety belts . ... ... ..... ... .. .. 131,134
cleaning ... .. .... .. .... ... .. .. ... 203
Danger to passengers who do not wea r a
safety belt . .. ........... .. .. .. ... 132
Fastening .. ... .. .. ...... .. .. .. .. . 134
H eight adjustme nt ........... .. .... 137
Imp roperly worn .......... ... ... .. 137
I ndicator lights . . . . . . . . . . . . . . . . . . . . 2 1 In
dicator lig ht ( rear) . .. ..... ... .. .. . 25
Not worn ... .. .. .. . ... ...... ... .. 132
Safety be lt pos ition .. .. ..... ... .. .. 135
Safety instr uctions ................. 134
Securing child safety seats ........ .. 177
Spec ial considerations for pregnant
women ... .. .. .. .. . .. .... .... .... 136
Un fastening ...... ...... .......... 136
Wa rning/ind icator light . . . . . . . . . . . . . 131
Wor n pro perly . .. .... ........... .. 133
Safety be lt warning light ............. 131
Safety centra l locking . . . . . . . . . . . . . . . . . 3 7
Safety comp lia n ce sticke r ........ .. .. 265
Safety equ ipment ...... ............. 121
Safety featu res for occ upan t rest raint and
protection . . . . . . . . . . . . . . . . . . . . . . . . . 121
Safety gu idelines
Seat adjustment . . . . . . . . . . . . . . . . . . . . 52
Safety instr uctions
for s ide cu rtain airbags .. ...... .... . 164
fo r us ing child safety seats ......... . 170
for us ing safe ty belts .............. . 134
Moni to ring the Advanced Ai rbag Sys-
tem .... .... .. .... ... .......... .. 155
Scheduled maintena nce i nterval
with dr iver information system . . . . . . . . 13
Screwdr iver ....... .. . .. .. ..... ... .. 247
Seat adjustment Drive r's sea t . . . . . . . . . . . . . . . . . . . . . . . 52
F ron t passenger's seat . . . . . . . . . . . . . . . 53
Hea d restraints ..... .. .. ..... ... .. 125
Safety gu idelines ... . ... ...... ... .. . 52
Seat heating .. .. .. .... ............. . 68
Seating position Driver .. .. .. .. .... .. ........ ..... 122
Front passenger .. .. .. .. ...... ..... 123
How to ad just the front s eats ....... . 123
Incorre ct seat position .......... .. .. 1 2S
O ccu pan ts ... .. ...... ........... .. 1 22
Rear passengers . ... .. ... ..... ... .. 124
Seats adjust ing . . . . . . . . . . . . . . . . . . . . . 53, 54
Fold ing ... .. .. .. .. .. ........... .. . 61
Seats (number) .. ...... ............. 131
S ecurity sys tem (ind icator light) ... .. .. . 21
•
•
•

284 Index
Weights .......... ......... ... .... . 265
What happens if you wear your safety belt
too loose? ........................ .
135
What happens to unbelted occupants? .. 132
What impairs driving safety? .......... 122
What should I do after changing a
wheel? .. .... .. .. ...... .... ... .. .. .
232
What should I do after replacing wheels? 232
Wheel bolts
Torque ..... ................ ..... .
242
Wheels ... .. ............ ... .. .. ... 225
A ll wheel drive ......... .... .. .. .. . 190
Checking tire pressure ..... .... .... . 231
cleaning ... ............. .... .. .. . 202
Cold tire inflation pressure .......... 229
General notes ................ .... . 225
Glossary of tire and loading terminolo-
gy .. .. .. ................. .. .. .. .
226
New tires and wheels ...... .... .... . 236
Tires and vehicle load limits .. .... .. . 233
Wheel wrench .............. ... .... . 247
When must a safety belt be rep laced? . .
134
When must the airbag system be inspect-
ed? ..... .. ....................... . 152
When shou ld I ad just the tire pressures?
232
When shou ld I check the tire pressures? . 232
Where are lower anchorages located? ... 181
Where can I find the tire pressu res for my
car? . .. ... .................. ..... .
231
Why safety belts? .......... .. .. .. .. . 132
Windows
cleaning/removing ice
203
W indshield
cleaning ... ................ ..... ..
46
defrosting (automatic climate contro l
system) . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
defrosting (manual climate control sys-
tem) .. .. ................. .. .... ..
65
also refer to Windshield . ........ .. .. 46
Windshield washer system ... ... .. .. .. 46
Reservoir capacity .............. .. . 266
Washer reservoir ......... .... .... . 224
Windshield w ipers
C leaning wiper blades ............. . . 47
Folding up ............... ... .... .. 47
Indicator light . . . . . . . . . . . . . . . . . . . . .
24
Replacing windshield wiper b lades . ... . 47
Switching on and
off ............ ... . 46
Winter operation
Cooling system . .. ............. .. ..
216
Winter tires . .. .. .. .... .... ..... .. .. 240
All -wheel drive ... ..... ..... ... .. .. 240
Winter use
Car washes ................... ....
201
defrosting the windshield (automatic cli­
mate control system) . . . . . . . . . . . . . . . . 67
Removing ice from windows . .. .. .. ..
203
Seat heating . . . . . . . . . . . . . . . . . . . . . . . 68
X
Xenon-lights .. .. .. ... .... ...... .... 258
Xenon headlights . ................. .. 42