2017 AUDI A3 SEDAN heating

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Intelligent Technology Electronic Stabilization
Control (ESC)
Description
Electronic Stabilization Control ( ESC) supports
driver safety . It reduces the risk of slipping and
improves dr iving stability. ESC detects critica l sit­
uations such as the vehicle oversteering and un­
dersteer ing or the wheels are spinning. The vehi­
cle is stabilized by apply ing the brakes or reduc ­
ing engine torque . When the ESC engages, the
G1 indicato r light b links in the instrume nt clus­
ter.
The follow ing systems are integrated in the ESC:
Anti-loc k bra king system (ABS)
ABS prevents the whee ls from locking when brak­
ing. The vehicle can still be steered even during
hard brak ing. Apply steady pressure to the brake
pedal. Do not pump the pedal. A pulsing in the
b rake pedal indicates that the system is act ing to
stabilize the vehicle .
Brake a ssist system
The brake assist system can decrease braking dis­
tance. It increases brak ing power when the driver
presses the brake pedal quick ly in emergency sit­
uations . You must press and hold the brake pedal
u nti l the dangerous sit uat io n is ove r. In veh icles
with adaptive cr uise contro l*, the bra ke assist
s ys tem is more sensitive if t he d istance detec ted
to the veh icle dr iv ing ahe ad is too small.
Anti -slip regulation (ASR)
ASR reduces eng ine power when the drive wheels
begin spinning and adapts the force to the road
conditions . This makes i t eas ie r to sta rt, acceler­
ate and dr ive up hill s.
Electronic differential lock (EDL )
The EDL applies the brakes to a wheel that starts
spinning and transfers t he drive power to the
other driving wheel or wheels ( if the veh icle is
eq uipped w ith all whee l dr ive*) . T his function is
n o t available at higher speeds.
Intellig ent Technology
In extreme cases, ED L automat ica lly switches off
to keep the brake o n the braked whee l from over­
heating. The veh icle is still working correct ly. EDL
will switch on again automatically when condi­
t ions have returned to normal.
Ste ering recommendation
The ESC he lps to s tabilize the vehicle by changing
the steering torque.
Select ive wheel torque control
Se lective wheel to rque cont rol is used w hen driv­
i ng on curves. The fron t whee l on the inside of
the curve or bo th wheels on the i nside of the
c u rve are braked se lective ly as needed . This al­
l ows more precise driving in c urves.
Automatic post-collision braking system
T he "automat ic pos t-collision braking system"
c an help to reduce the risk of sliding an d of addi ­
tiona l co llisions a fter an acciden t. If the ai rbag
contro l modu le detects a co llision above a certain
vehicle speed, the veh icle is bra ked by the ESC.
T he vehicle does not bra ke autorn,;1tically if;
- t he dr ive r presses the acce le rator pedal, or
- the ESC, the brake system or the veh icle elect ri-
cal system are not functioning .
A WARNING
-The ESC and its integ rated systems cannot
overcome the lim its imposed by natura l
phys ic al laws. This is especially important
on sli ppery or wet roads . If the sy stems be­
gin acting to stabilize your vehicle, you
should immediately alter your speed to
match the road and traffic conditions. Do
not let the inc reased safety provided tempt
you into taking risks. This could increase
your r isk of a coll is ion.
- Please n ote the r isk of a coll is ion increases
when dr iv ing fast, especially t hrough curves
a nd on slippery or wet roads, and when dr iv­
ing too close to objects ahead. The ESC and
its integrated systems ca nnot always pre­
vent collisions
-there is st ill a ris k of ac ci-
dents!
..,.
151

Intelligent Technology
and at cold times of the year. A lot of energy is
used but little is generated. It is also critical
when the engine is not running but electrical
equipment is switched on. In this case, energy is
used but none is generated.
In situations like this, energy management will
actively regulate the distribution of energy.
Long periods without use
If you do not drive your vehicle for several days or
weeks, electrical equipment is gradually scaled
back or switched off. This reduces energy use and
ensures the vehicle will be able to start after long
periods of time. Some convenience functions
such as opening with the remote control key may not be available. These convenience functions
will be available again once you switch the igni­ tion on and start the engine.
With the engine switched off
The vehicle battery will drain if you use Infotain­
ment functions such as listening to the radio
while the engine is switched off.
If the vehicle's ability to start may be impaired by
the energy use, a message will appear in the In­
fotainment system display. The message indi­
cates that the system will switch off automatical­ ly soon . If you would like to continue using the
functions, you must start the engine.
With the engine running
Although electrical energy is generated while
driving, the vehicle battery can drain . This can
happen if little energy is generated but much is
used, and the charge level of the vehicle battery
is not optimal.
To restore the balance of energy, components that require large amounts of energy are tempo­rar ily scaled back or switched off. Heating sys ­
tems in part icular require a great deal of energy .
If you notice, for example, that the seat heating*
or rear window defogger is not working, then it
has been temporarily reduced or switched off.
These systems are available again as soon as the
energy supply has been restored .
In addition , you may notice that the idle speed
has slightly increased. That is normal and no
156
cause for concern . By increasing the idling speed,
the additional required energy will be generated
and the vehicle battery will be charged.
Notice about data
recorded by the Event
Data Recorder and
vehicle control modules
Event Data Recorder
This vehicle is equipped with an Event Data Re­
corder (EDR). The main purpose of an EDR is to
record, in certain crash or near crash-like situa­
tions, such as an airbag deployment or hitting a road obstacle, data that will assist in understand­
ing how a vehicle's systems performed . The EDR
is designed to record data related to vehicle dy­
namics and safety systems for a short period of
time, typically 30 seconds or less. The EDR in this
vehicle is designed to record such data as:
- How various systems in your vehicle were oper­
ating;
- Whether or not the driver and passenger safety
belts were buckled/fastened;
- How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
- How fast the vehicle was traveling.
These data can help provide a better understand­
ing of the circumstances in which crashes and in­
juries occur. NOTE: EDR data are recorded by your
vehicle only if a non-trivial crash situation occurs;
no data are recorded by the EDR under normal
driving conditions and no personal data (e.g .,
name, gender, age, and crash location) are re­
corded . However, other parties, such as law en­
forcement, could combine the EDR data with the
type of personally identifying data routinely ac­
quired during a crash investigation .
To read data recorded by an EDR, special equip­
ment is required, and access to the vehicle or the
EDR is needed . In addition to the vehicle manu­
facturer, other parties, such as law enforcement,
that have the special equipment, can read the in­
formation if they have access to the vehicle or the EDR.
~

Check ing and F illing
The pull cable for the emergency release is locat­
ed on the cover .
.,. To access t he e mergency release, fold the r ight
bac kres t
forwa rd ¢ page 68 .
.,. Remove the cover from the trim .
.,. Carefully pull the cover toward the center of
the ve hicle at a 45° angle
-arrow- ¢ fig. 268
c>(D . The tab on the cover must point forward
in the direct ion you are pulling when pull ing on
the cover.
.,. Press on the left s ide of the fuel f ille r door to
open it
¢ page 314, fig . 265 .
(D Note
Onl y pull on the loop/cove r unt il you feel re ­
sistance. You wi ll not hea r it re lease . Other­
w ise you cou ld damage t he emergency re­
lease mecha nism .
Catalytic converter
The vehicle may o nly be driven with unleaded
g a soline, otherwise the catalyt ic converter will be
destroyed.
Never d rive until the tank is completely empty .
The irregular supp ly of f uel that results from t hat
can cause engine m isfi res. Uncombusted fuel will
ente r the exhaust sys tem, w hich can ca use ove r­
heating and damage to the catalyt ic converter .
& WARNING
The tem perature of the ex ha ust system is
high, both when driving and after stopping
the engine.
-
- Never touch the exha ust ta il pipes once t hey
have become hot. This could result in burns.
- Do not park your vehicle over flammable
materials such as g rass or leaves because
the h igh temperat ure of the emiss ions con­
trol system cou ld start a f ire.
- Do not apply underbody protectant in the
exhaust system area, because this increases
t h e risk of fire.
316
Engine compartment
· Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and fill ing fluids , the re is a risk of in­
jury, scalding, accidents , and burns. For this
reason, follow all the warnings and general
safety precaut ions provided in the following in ·
formation . The engine compartment is a dan­
gerous area.
c> & .
& WARNING
To reduce the ris k of injur ies, comp lete the
following steps before opening the hood:
- Tur n the engine off.
- S witch the igni tion off.
- Set the park ing brake.
- Move the selector lever into t he P position.
- Never ope n the hood when there is steam o r
coo lant escaping from the engine compart­
ment, because there is a risk that yo u could
be burned . Wait unt il no steam or coolant is
escapi ng.
- L et the eng ine cool down .
- Keep children away from the eng ine com-
pa rtment .
- Never sp ill fluids on a hot engine . These flu­
ids (such as the anti-freezing agent con­
tained in the coolant) ca n ignite.
- Avoid short c ircuits in the electrical system.
- When working in the engine compa rtment,
remember that the radiator fan can switch
on even if t he ignition is switched off, wh ich
increases the r is k of persona l injury.
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
coo ling syste m is under p ressure.
- To protect your face, hands, and a rms from
hot steam or coolant, cover the cap with a
large cloth when opening .
- Do not remove the engine cover under any
circumstances . Th is i ncreases the risk of
burns .
-

Checking and Filling
When the engine is warm it can be slightly above the upper marking.
Adding coolant
Plug-in hybrid drive* : Your vehicle has two cool­
ant expansion tanks that are separate from each
other. The smaller of the two expansion tanks
must not be opened
¢ page 104. Read and fol­
low the important safety precautions ¢
A in
Coolant on page 105 .
Requirement: there must be a residual amount of
coolant in the expansion tank
¢ (D .
~ Let the engine cool down.
~ Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockwise
¢_&. .
~ Add coolant mixed in the correct ratio
¢page 323 up to the upper marking.
~ Make sure that the fluid level remains stable.
Add more coolant if necessary.
~ Close the cap securely.
Coolant loss usually indicates there is a leak . Im­
mediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected.
If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cooling system.
.,&. WARNING
The cooling system is pressurized and can be­
come very hot. To reduce the risk of burns
from hot coolant:
- Do not open the coolant expansion tank cap
when the engine is hot. This increases the
risk of burns.
- Stop the engine and allow it to cool.
- Protect your face, hands and arms from es-
caping coolant and steam by covering the
coolant tank cap with a large, thick cloth.
- Turn the coolant tank cap counterclockwise
slowly and keep light pressure on the cap.
- To reduce the risk of burns, do not allow any
antifreeze or coolant to drip onto the ex­
haust system or hot engine components.
324
The ethylene glycol in engine coolant can
catch fire under certain circumstances.
- The coolant additive and the coolant can be
dangerous to your health. For this reason,
keep the coolant in the original container
and away from children . There is a risk of
poisoning.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
(D Note
Do not add coolant if the expansion tank is
empty . Air could enter the cooling system and
damage the engine . If this is the case, do not
continue driving . See an authorized Audi deal­
er or authorized Audi Service Facility for assis­
tance.
- Before the start of winter, have an author­
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en­
gine. If this happens, only use water and re­
store the correct mixture ratio with the
specified coolant additive as soon as possi­
ble .
- Only refill with new coolant.
- Radiator sealant must not be mixed with the coolant.
· Radiator fan
The radiator fan switches on automatically by it­
self
An auxiliary electric radiator fan switches on and
off depending on coolant temperature and other
vehicle operating conditions.
After you switch the engine off, the auxiliary fan
can continue running for up to 10 minutes
-even
with the ignition off.
It can even switch on again
later by
itself ¢.& , if .,..

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-Never use abrasive cleaning materials or
alcohol to clean the camera lens. This
could cause scratches and cracks.
-Power top
-Remove bird droppings immediately.
-Never use gasoline, spot remover, ben-
zene, paint thinner or other solvents to re­
move.
-Door windows
-Remove snow and ice on windows and ex-
terior mirrors with a plastic scraper. To
avoid scratches, move the scraper only in
one direction and not back and forth.
-Never remove snow or ice from door win­
dows and mirrors using warm or hot water
because this could cause cracks to form.
-To avoid damage to the rear window de­
fogger, do not apply any stickers on the heating wires on the inside of the window.
-Decorative parts/trim
-Never use chrome care or cleaning prod-
ucts.
-Paint
-To reduce the risk of scratches, the vehicle
must be free of dirt and dust before pol­
ishing 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 .
-Remove cosmetics and sunscreen immedi­
ately- these could damage the paint.
-Displays/instrument cluster
-The displays/instrument cluster and the
trim surrounding them must not be
cleaned with dry cleaning methods be­
cause they could be scratched.
-Make sure that the instrument cluster is
switched off and has cooled off before
cleaning it.
-Make sure no fluids enter the spaces be­
tween the instrument cluster and the
trim, because that could cause damage.
-Controls
-Make sure that no fluids enter the con-
trols, because this could cause damage.
-Safety belts
Care and cleaning
-Do not remove the safety belts to clean
them.
-Never clean safety belts or their compo­
nents chemically or with corrosive fluids
or solvents and never allow sharp objects
to come into contact with the safety belts.
This could cause damage to the belt web­ bing .
-If there is damage to the webbing, the
connections, the retractors or the buckles
,
have them replaced by an authorized Audi
dealer or authorized Audi Service Facility .
-Textiles/artificial leather/ Alcantara
-Never treat artificial leather/Alcantara
with leather care products, solvents , floor
polish, shoe polish, spot remove or similar
products.
-Have a specialist remove stubborn stains
to prevent damage.
-Never use steam cleaners, brushes , hard
sponges, etc. when cleaning.
-Do not turn on the seat heating* to dry the
seat.
-Objects with sharp edges, such as zippers
or rivets on clothing or belts, can cause
damage to the surface.
-Open hook and loop fasteners, for exam­
ple on clothing, can damage seat covers .
Make sure hook and loop fasteners are
closed.
-Natural leather
-Never treat leather with solvents, floor
polish, shoe polish, spot remover or simi­
lar products.
-Objects with sharp edges, such as zippers
or rivets on clothing or belts, 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 fading,
do not leave the vehicle in direct sunlight
for long periods of time. If leaving the ve ­
hicle parked for long periods of time, you
should cover the leather to protect it from
direct sunlight.
Ill>
351

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Fuse assignment -interior
Fig. 301 Vehicle interior: fuse assignment
No. Equipment
Fl Ad
Blue engine components
F2 Seat adjustment
F3 Power top hyd
raulic pump
F4 Infotainment control panel, Infotainment
components
FS Gateway
F6 Selector lever (automat ic transmission)
F7 Climate/heating control, auxiliary heating,
rear window defogger relay
Electromechan ica l parking brake sw itch,
F8 light switch,
rain/light sensor, inte rior
lighting, anti-theft alarm system, diagnos -
tic connector, communication box
F9 Steering column sw itch module
Fl0 Infotainment system display
Fll Dr iver's side safety belt tens ioner
F12 Infotainment components
F13 Suspension
control control module, diag-
nostic connector
F14 Heating/air conditioning system blower
FlS Electronic steering column lock
No .
Fl6
F 17
Fl8
F 19
F20
F21
F2 3
F24
F 2S
F26
F 27
F28
F2 9
F 31
F32
F33
F34
F 3S
F36
F3 7
F38
F39
F 40
F41
F42
F43
F44
F47
F4 8
Fuses and bulbs
Equipment
Infotainment components
Instrument cluster
Rearview camera
Convenience access cont rol module
Engine components
Steering column, steering wheel heating
switch module
Right vehicle electrical system control
module
Panorama glass roof/power top control
module, power top latch
Driver's s ide front/rear power w indows
Seat heating
Sound-amplifier
Convertible top control module
Interior lights
Left vehicle electrical system control mod-
ule
Rearview camera, radar sensor control
module
A irbag
Button i llumination, interior sound, re-
versing light switch, temperature sensor,
coil for neck heating relay and socket relay
Fu nct ion lighting, headl ight range control,
a ir quality sensor, automatic dimming
rearview mirror
R ight headlight
l eft headlight
High-voltage battery
Passenger's s ide front/rear power win -
dows
Sockets Passenger's side safety belt tensioner
Cen tral locking components, windshield
washer system
Interior lights
Al l wheel drive
Rear w indow wiper
Outer sound actuator
365

Fuses and bulbs
No . Equipment
F49 Starter, clutch sensor, high-voltage bat-
tery, power electronics
FS3 Rear window defogger
The power seats* are protected via
circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.
Fuse assignment - engine compartment
F ig . 302 Engine co mpa rtment: fuse assignmen t
No. Equipment
Fl E
lectronic Stabilization Control (ESC)
F2 Electronic Stabilization Control ( ESC)
F3 Engine control module
Engine components, eng ine cooling, aux-
F4 ilia
ry heater coil relay (1+2), secondary
air injection pump relay
FS Engine components, tank system
F6 Brake light sensor
F7 Engine components, water pumps
FB Heat oxygen sensor
F9 Engine components, exhaust door, glow
time control module
FlO Fue l injectors, fuel control module
366
No . Equipment
Fll Auxiliary heater heating element 2
, en-
gine components
F l2 Auxiliary heater heating element 3
Fl3 Automatic transmission
F lS Horn
F l6 Ignition coils, CNG cut-off valve, power
and control electronics
Fl7 Elec
tronic Stabilization Control (ESC), en -
gine contro l module
Fl8 Terminal 30 (voltage
reference), battery
monitoring
F19 Windshield wipers
F20 Anti-theft alarm system
F 22 Terminal SO diagnosis, engine control
module
F2 3 Starter
F 24 Auxiliary heater heating element 1, brake
booster
F31 Vacuum pump, water pump
F33 Brake booster
F34 Brake booster
F35 A/C function relay
F37 Parking heater
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for you.
It is becoming increasingly more and more diffi­
cu lt to replace vehicle light bulbs since in many
cases, other parts of the car must first be re­
moved before you are able to get to the bulb.
This applies especially to the light bulbs in the
front of your car which you can only reach
through the engine compartment.
Sheet meta l and bulb holders can have sharp
edges that can cause serious cuts, parts must be
correctly taken apa rt and then properly put back
together to help prevent breakage of parts and
..,.

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Index
Free text search . . . . . . . . . . . . . . . . . . . . . . 166 H
Media ... .. .. ............... .. .... . 232
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 200
Radio ... ................... ....... 218
Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Fr eeze protection
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Frequency band ............... .. . 217,220
Front airbags Description . . . . . . . . . . . . . . . . . . . . . . . . . 271
Howtheywork .................. ... . 277
Frontal collisions and the laws of physics . . 259
Front center armrest . . . . . . . . . . . . . . . . . . . 63
Front passenger's door emergency release . . 38
Fr ont seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Child restraints in the front seat . . . . . . . . 268
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Addit ives. .. .. ............... .. ..... 312
Blended gasoline . . . . . . . . . . . . . . . . . . . . 312
Current consumption ............... 17, 18
Ethanol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Fuel filler neck . . . . . . . . . . . . . . . . . . . . . . 313
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . 10, 12
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 375
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Gasoline additives . . . . . . . . . . . . . . . . . . . 313
Saving fuel . . . . . . . . . . . . . . . . . . . . . . . . . 143
Fueling Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fuel tank capacity ................. .. 375
Opening the fuel filler door . . . . . . . . . . . . 314
Fuel shut-off during deceleration . . . . . . . . . 74
Fu ses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
G
Garment hooks . . . . . . . . . . . . . . . . . . . . . . . . 65 Handsfree .
. . . . . . . . . . . . . . . . . . . . . . . . . . 177
Headlight range control . . . . . . . . . . . . . . . . . 51
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Headlight range control . . . . . . . . . . . . . . . 51
Washer system . . . . . . . . . . . . . . . . . . . . . . 57
Head restraints . . . . . . . . . . . . . . . . . . . . . . . 250
Adjusting . . . . . . . . . . . . . . . . . . . . . . . 63, 250
Removing and installing . . . . . . . . . . . . . . . 63
Heated Ext erior mirrors . . . . . . . . . . . . . . . . . . . . . . 55
Rear window (automatic climate control sys -
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Seats (automatic climate control system) . 72
Washer fluid nozzles . . . . . . . . . . . . . . . . . . 57
Heating/ventilation system Adjusting the air vents . . . . . . . . . . . . . . . . . 73
Heavy cloth ing and safety belts . . . . . . . . . . 261
Hex socket. . . . . . . . . . . . . . . . . . . . . . . . . . . 353
High-voltage battery . . . . . . . . . . . . . . . . . . . 95
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
High beams . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
High beam assistant . . . . . . . . . . . . . . . . . . 52
Highway lights . . . . . . . . . . . . . . . . . . . . . . . . 51
Hill desc ent control . . . . . . . . . . . . . . . . . . . . 89
Hill hold assist . . . . . . . . . . . . . . . . . . . . . . . . 85
also refer to Hill hold assist . . . . . . . . . . . . 85
Hold assist (hill) . . . . . . . . . . . . . . . . . . . . . . . 85
Home address . . . . . . . . . . . . . . . . . . . . 202, 207
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
How are child restraint system anchors relat-
ed to child safety . . . . . . . . . . . . . . . . . . . . . 306
How many a irbags does my vehicle have? . . 274
How safety belt pretensioners work . . . . . . 265
Gas discharge lamps . . . . . . . . . . . . . . . . . . . 366
I
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Octane rating ................. ..... . 312
Recommendation.............. ..... . 312
Glossary of tire and load ing terminology . . 330
Glove compartment . . . . . . . . . . . . . . . . . . . . 65
Gross Vehicle Weight Rating (GVWR) . . . . . 374 Ig
nitio n
Establishing drive ready mode (plug-in hy-
brid drive) . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Switching on/off (plug-in hybrid drive) . . . 96
Switching on/off (using the button) . . . . . . 78
Switching on/off (using the key) . . . . . . . . . 77
Imbalance (wheels) . . . . . . . . . . . . . . . . . . . 335
387