2016 AUDI A3 power steering

Driving
brake provides various convenience and safety
functions.
When starting from a stop
- The integral hill start assist helps you when
driving by automatically releasing the parking
brake
c:;, page 87, Starting from a stop.
- When starting on inclines, the hill start assist
prevents the vehicle from unintentionally roll­
ing back. The braking force of the parking brake
is not released until the wheels build up
enough driving force.
Emergency brake function
The emergency braking function ensures that the
vehicle can be slowed down even if the
standard
brakes fail c:;, page 87, Emergency braking
function.
A WARNING
- Do not press the accelerator pedal inadver­
tently when the vehicle is stationary and the engine is running and a gear is selected.
Otherwise the vehicle will start to move im­
mediately and could result in a crash.
- If the power supply fails, the released park­
ing brake can no longer engage. In this
case, park the vehicle on level ground and
secure it by placing the selector lever in the
P position . See an authorized Audi dealer or
authorized Audi Service Facility for assis­
tance.
(D Note
If the . or .. (USA models) /. (Canada
models) indicator light in the instrument
cluster blinks, there is a malfunction in the
brake system. Refer to the detailed descrip­
tion of the indicator lights
c:;, page 18.
-If the - (USA models) /. (Cana-
da models) or
Ill indicator light turns on,
there is a malfunction in the parking brake
c;, page 19.
@ Tips
-If the parking brake is set while the ignition
is switched off, the
¢~jj indicator light in the
button and in the instrument cluster dis-
86
play - (USA models) /. (Canada mod­
els) will turn off after a certain amount of
time.
- If driver's door is opened while the ignition
is switched on, the parking brake sets auto­
matically. This prevents unintended rolling
of the vehicle.
- Occasional noises when the parking brake is
set and released are normal and are not a
cause for concern.
- When the vehicle is parked, the parking
brake goes through a self-test cycle at regu­
lar intervals. Any noises associated with this
are normal.
- If there is a power failure, the parking brake
will not set if it is released, and it will not release if it is set
c:;, I!:::,. . See an authorized
Audi dealer or authorized Audi Service Fa­ cility for assistance.
· Parking
.,. Press the brake pedal to stop the vehicle.
.,. Pull the switch @
c:;, page 85, fig. 80 to set the
parking brake.
.,. Place the selector lever in the P position.
.,. Turn the engine off
c:;, & -
.,. Turn the steering wheel when parking on in­
clines so that the wheels will roll into the curb
if the vehicle starts moving.
A WARNING
- Always take the vehicle key with you when
leaving the vehicle, even for a short period
of time . This applies particularly when chil­
dren remain in the vehicle. Otherwise chil­
dren could start the engine, release the
parking brake or operate electrical equip­
ment such as power windows, which in­
creases the risk of an accident.
- When the vehicle is locked, no one -particu­
larly not children -should remain in the ve­
hicle. Locked doors make it more difficult
for emergency workers to get into the vehi­
cle, which puts lives at risk.

,....,
N
0 > co ,...., shared, please see your contract with the
wireless te lecommunications provider and the
"About Aud i connect" tab in your vehicle's
MMI:
! MENUI button> Aud i connect > About
Audi conne ct .
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 crit ical sit­
uations suc h as the vehicle overstee ring and un­
de rs teer ing or the wheels are sp inning. The vehi­
cle is s tabilized by app ly ing the brakes or reduc­
i ng e ngine torque. Once t he ES C i s ac tiva ted, the
indicator light
DJ b li nks in the instrument clus ­
ter .
The fol low ing systems are integrated in the ESC:
Anti-lock braking system (ABS)
ABS preve nts the whee ls from lock ing whe n brak­
i ng. The vehicle can s till be steered even during
h a rd brak ing. Apply steady press ure to the brake
pedal. Do not pump the pedal. A puls ing in t he
bra ke pedal indica tes th at the system is act ing to
s tabili ze the vehicle.
Brake assist system
The brake assist sys tem can decrease braking dis­
tance .
It increases brak ing power when the d rive r
p resses the brake pedal q uic kl y in eme rgency sit­
uations. Yo u m ust press and hold the b rake pedal
u nti l the dangero us si tuati on is over. In ve hicles
with adaptive cruise contro l*, the bra ke assist
system is more sensitive if the d istance detected
to the veh icle ahead is too small.
Anti-slip regulation (ASR)
ASR red uces eng ine power when the drive wheels
begin spinning an d adapts the force to the road
conditions. This makes it easie r to sta rt, acceler ­
ate and drive up inclines .
Intelligent Technology
Electronic differential lock (EDL)
T he ED L brakes wheels t hat are spi nning and
transfe rs the drive power to the o ther dr ive
whee l or wheels if the vehicle is equ ipped with all
whee l drive *). T his function is not available at
higher speeds.
In extreme cases, ED L automat ica lly swi tches off
to keep the b rake o n the braked whee l from over­
heating. The vehicle is still working correct ly. ED L
will switc h on again automatically when condi­
tions have returned to normal.
Steering recommendation
T he ESC he lps to s tabilize the vehicle by changing
the steering torque.
Selective wheel torque control
Se lective w heel torque con trol is used w hen d riv ­
i ng on curves. The front whee l on the ins ide of
the curve or both wheels on t he i nsid e of the
c ur ve are braked se lective ly as needed . This al ­
lows more precise driving in c urves .
Automatic post -collision braking system
T he "Automat ic pos t-collis ion braki ng system"
ca n help to reduce the ris k of sliding and of othe r
collisions af ter an a cciden t. If th e ai rbag cont rol
module detects a collision above a certai n vehicle
speed, the vehicle is brake d by the ESC.
T he veh icle does not br ake au tomatic ally if:
- the dr iver presses the acce lera tor pedal, or
- the braking fo rce generated by the pressed
brake pedal is greater than the b raking force
that would be in itiated by the system, or
- the ESC, the brake system o r the veh icle electri­
cal system are not functioning.
A WARNING
- T he ESC and its i nteg rated systems ca nnot
over come the li mits posed by natu ral physi­
cal laws. This is espe cially impor tant on slip­
pery o r we t roads . If the systems beg in act­
ing to stabilize your veh icle, you should im ­
mediately a lter your speed to match the
road and tra ffic condit ions. Do not let the
increased safety provided tempt you into
159

Intelligent Technology
A WARNING
-New brake pads do not achieve their full
braking effect during the first 250 mi
-
(400 km). They must be "broken in" first .
However, you can compensate for the
slightly reduced braking force by pressing
firmly on the brake pedal. Avoid heavy brak­
ing during the break-in period.
- Only apply the brakes for the purpose of
cleaning the brake system when road and
traffic conditions permit. You must not en­
danger other road users. This increases the
risk of an accident.
- On steep slopes, reduce the speed and se­
lect a lower gear or lower selector lever po­
sition. Drive as little as possible while press­
ing the brake pedal and avoid putting your
left foot on the brake pedal while driving.
This could cause the brakes to overheat and
impair the efficiency of the brakes.
- Do not let the brakes "grind" by always
keeping your foot on the brake pedal. This
can cause the brakes to overheat, increase
wear and increase braking distance unneces­
sarily.
- Certain weather and operating conditions
such as driving through water, driving in heavy rain or driving after washing your ve ­
hicle can impair the effectiveness of the
brakes . In the winter, ice may build up on
the brake pads, rotors and drums. Check
these components by braking carefully. Ap­
plying the brakes carefully several times
dries the brakes and removes ice build-up .
- The efficiency of the brakes can also be im­
paired by driving for long stretches on roads
covered with salt without using the brakes.
You can remove salt deposits from the brake rotors and pads by carefully applying
the brakes several times.
- If the front spoiler is damaged or you install
another spoiler, make sure the front wheel brakes are ventilated properly . Otherwise,
the brake system could overheat, which re­
duces their effectiveness .
- Failure of a brake circuit impairs braking
performance, which increases braking dis -
162
tance. Avoid driving the vehicle and have it
towed it to the nearest authorized Audi
dealer or authorized Audi Service Facility.
- Never let the vehicle roll while the engine is
stopped because this increases the risk of an
accident .
- If the brake booster is not working, you will
have to press much harder on the brake
pedal to compensate for the lack of the
booster.
(D Note
- Never let the brakes "rub" by pressing the
pedal lightly when braking is not really nec­
essary. This causes the brakes to overheat
and increases braking distance and causes
wear .
- Before driving on a long stretch with steep
slopes, reduce your speed and shift to the
next lower gear This makes use of the en­
gine braking effect and relieves the brakes.
If you need to brake additionally, brake in
intervals and not continuously.
(D Tips
- If the brake booster is not working, you
must press the brake pedal with much more
force than normal.
- If you retrofit your vehicle with a front spoil­
er, wheel covers or similar items, make su re
that the air flow to the front wheels is not
interrupted. Otherwise the brake system
can become too hot.
Electromechanical
steering
The electromechanical steering supports the
driver's steering movements.
Power steering adapts electronically based on
the vehicle speed .
The vehicle still has full steering functionality if
the power steering fails or when the engine is
stopped (towing) . To steer, you must apply much
more force than usual. .,.

,....,
N
0 > co ,...., Indicator lights and messages
• Do not drive vehicle: steering defective
If th is ind icator light turns on and stays on and
this message appears, the power steering may
h ave fa iled.
Do
not cont inue driving . See an authorized Aud i
dealer or authorized Aud i Serv ice Faci lity for as­
sistance.
• Do not dr ive vehicle: steering defective
There is a malfunction in the electronic steering
lock. You cannot turn the ignition on.
Do
not tow your vehicle beca use it cannot be
steered. See an authorized A udi dealer or author­
ized Audi Service Facility for assistance.
':r- ij Steering malfunction : you can continue driv­
ing
I f the indicator light turns on, the steering whee l
may be more diff icult to move o r more sensitive
than usual. The steering wheel may also be at an
angle when driving st raight.
Drive slowly to an author ized Audi dealer or au­
thor ized Audi Service Facility to have the mal­
function corrected.
1;11 Steering lock: system fault! Please contact
Service
There is a malfunction in the electronic steering
lock.
Drive to an authorized Aud i dea ler or authorized
Aud i Service Faci lity immediately to have the
malfunct ion corrected.
A WARNING -
Have the system malfunction corrected as
soon as possible by an authorized Audi dealer
or authorized Audi Service Facility, as this in­
creases the risk of an accident .
(D Tips
If the . or t~ff indicator light only stays on
for a short time, you may continue dr iv in g.
Intelligent Technology
All wheel drive (quattro)
Applies to vehicles: with all wheel drive
In all wheel drive, all four wheels ore powered.
General information
In all wheel dr ive, the driving power is div ided be­
tween all fou r wheels . This happens automatical­
ly depending on yo ur driving behavior as well as
the current road conditions . A lso see
c> page 159, Electronic stabilization control
(ESC).
The all whee l drive concept is designed for high
engine power. Yo ur vehicle is exceptionally pow­
erfu l and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre­
cautions
c> ,&. .
Winter tires
By using all wheel drive, your vehicle has good
forward motion with standard tires in winter con­
ditions. However, in winter we recommend using
winter or all season tires on
all four wheels, be­
cause this will improve the
broking effect.
Snow chains
If there are snow chain laws, snow chains must
also be used on veh icles w ith all wheel dr ive
c> page 269, Snow chains.
Replacing tires
For vehicles with a ll wheel d rive, only wheels with
the same rolling circumference should be used .
Avoid wheels with different tread depths
c> poge 260.
Offroad vehicle?
Your Audi is not an offroad vehicle -there is not
enough ground clearance. For this reason, avoid
difficu lt terrain . Also see<=)
page 302.
A WARNING
--Also, in veh icles with all whee l drive, adapt
your driving style to the current road and
traffic cond itions. Do not let the increased
safety prov ided tempt you into taking r isks.
163

Airbag syste m
-An Advanced Airbag with gas generator for the
driver inside the steering wheel hub .
- An Advanced Airbag with gas generator ins ide
the instr ument pane l for the front passenger.
- A capacitive passenger detect io n system unde r­
neath the front passenger seat cover . This sys­
tem measures the electrical capacitance of the person in th e seat. The information registered
is sent continuously to the electron ic control
unit to regula te deployment of the front Ad­
vanced Airbag on the passenger s ide .
- An airbag monitoring system and indicator
light in the instrument cluster
¢ page 196.
-A sensor in each front seat registers the dis­
tance between the respective seat and the
steering wheel or instrument panel. The infor­
mation reg istered is sent continuously to the
electronic control un it to regulate deployment
of the fro nt Advanced A irbags.
- The
PASSENGER AIR BA G OFF light comes on
and stays on in the center of the instrument
panel ¢
page 236 and tells you when the front
Advanced Airbag on the p assenge r side has
been turned off .
- A sensor in the safety belt la tch for the driver
and for the front seat passenger that senses
whethe r that safety belt is latched or not and
transmits this information to the electronic contro l unit.
.&_ WARNING
Damage to the front passenger seat can pre­
vent the front airbag from working properly.
- Improper repa ir or disassemb ly of the front
passenger and driver seat w ill prevent the
Advanced Airbag System from functioning properly .
- Repairs to the front passenger seat must be
performed by qua lified and prope rly trained
workshop personnel.
- Never remove the front passenger or dr iver
seat from the vehicle.
- Never remove the upho lstery from the front
passenger seat.
- Never disassemble or remove parts from the
seat or disconnect wires from it.
192
- Never carry sharp objects in your pockets or
put them on the seat. The capacit ive pas­
senger detection mat in the front passenger
seat will not function properly if it is punc­
tured .
- Never carry things on your lap or carry ob­
jects on the front passenger seat . Such ob­
jects ca n influence the capacitance regis­
tered by the capacitive passenger detection
sys tem, so tha t incorrect informat io n is pro­
vided to the a irb ag cont rol unit.
- Never store items under the front passenger
se at. Parts of the Advanced Airbag System
un der the passenger seat could be dam­
aged, p reventing them and the airbag sys ­
tem from wor king p roper ly .
- Never p lace seat covers or replacement up­
holstery that have not been specifically ap­
proved by Audi on the front seats .
- Seat covers can prevent the Advanced A ir­
bag System from recognizing chi ld re­
straints or occupants on the front passenger
seat and prevent the side airbag in the seat
backrest from deploying properly.
- If a seat heater has been retrofitted or oth­
erwise added to the front passenger seat,
never install any child restra int system on
this seat.
- Never use cushions, p illows, blankets, or
sim ila r items o n the front passenger seat .
The additional layers prevent the capacit ive
passenge r detection sys tem from accurately
measuring the capacitance of the child safe­
ty seat and/or the person on the sea t and
t hus keep the Advanced A irbag System from
wo rking properly.
- Never p lace or use any e lectr ic al device
(such as a lap top, CD player, e lectronic
games device , power inve rter or seat heater
for child seats) on the front passenger seat if the device is connected to the 12 -volt
socket or the cigarette lighte r socket. Such
dev ices can influence the capac itance regis­
tered by the capaci tive passenger detection
system, so that incorrect informat io n is pro-
vided to the airbag cont rol unit.
~

Fuses and bulbs
-Some of the equipment listed in the follow­
ing tables applies only to certain mode l ver­
sions or certain optional equ ipment.
Interior fuse assignment
F ig. 226 Vehicle interior: fuse assignment
No. Equipment
Fl Engine components
F2 Seat adjustment
F3 Hydraulic pump
cover (Cabriolet)
F4 MMI control panel, MMI components
FS Gateway
F6 Selector lever (automatic transmiss
ion)
.... ~ N 0
> a) cc
F7 Climate/heating cont
rol, auxiliary heating,
rear window defogger relay
Diagnosis, electromechanical parking
brake switch, light switch , rain and light
F8 sensor, interior lighting commun ication
box (Plug-in hybrid drive*) ant i-theft alarm
system
F9 Steering column switch module
FlO Display
Fll Reversible driver's side safety belt tension-
ers
Fl2 MMI area
292
No.
Fl3
Fl4
FlS
Fl6
Fl7
Fl8
Fl9
F20
F23
F24
F25
F26
F27
F28
F29 F31
F32
F33
F34
F35
F36
F37
F38
F39
F40
F41
F42
Equipment
Adaptive dampers control module/ service plug (Plug-in hybrid dr ive")
Climate control system blower Electronic steering column lock
MMI area
Instrument cluster
Rearview camera
Convince key system control module, tank
system
Tank system Exterior lighting, heated washer fluid noz-
zles
Panorama sunroof/ power top control
module, power top latch (Cabriolet)
Door/dr iver's side doors (for example pow-
er windows)
Seat heating
Sound-amplifier
Power top control module, electro nics
(Cabriolet)
Interior lights
Exterior lighting
Driver assistance systems
A irbag
Button illumination, coils for upper cabin
heating relay (Cabriolet) and socket relay,
interior sound, reversing light switch, tern-
perature sensor
Function lighting, diagnosis, headlight
range control system, air quality sensor,
automat ic dimming rearv iew mirror
Right corneri ng light/ r ight LED-headlight
Left cornering light/ left LED-headlight
High-voltage battery (Plug- in hybrid
drive*)
Door/front passenger's side doors (for ex-
ample, power windows)
Sockets
Reversib le front passenger's side safety
belt tensioners
Central locking components, windshield
washer system

Index
Mirrors Adjusting the exterior mirrors. . . . . . . . . . .
50
Monitoring the Advanced Airbag System 196
Motor
Stopping (messages with ignition lock) 84
Multifunction steering wheel . . . . . . . . . . . . .
29
On-board comput er . . . . . . . . . . . . . . . . . . . 29
N
Natural leather care/cleaning . . . . . . . . . . . 277
Navigation system
CD-ROM p layer . . . . . . . . . . . . . . . . . . . . . . .
63
NHTSA
Con tacting . . . . . . . . . . . . . . . . . . . . . . . . .
174
Nitrogen oxide (NOx) catalytic converter
refer to Ad Blu e . . . . . . . . . . . . . . . . . . . . . . 234
Number of seats . . . . . . . . . . . . . . . . . . . . . . 176
Number of vehicle keys . . . . . . . . . . . . . . . . . 35
0
Occupant protection . . . . . . . . . . . . . . . . . . . 139
Occupant seating posit ions . . . . . . . . . . . . . 167
Oc tane ra ting (gasoline) . . . . . . . . . . . . . . . . 228
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
O il
Indicator l ight . . . . . . . . . . . . . . . . . . . . . . .
24
also refer to
Engine oil . . . . . . . . . . . 240, 242
Oil change interval
with driver information system . . . . . . . . .
252
On-Board-Diagnostic System (OBD)
System indicator light (MIL) . . . . . . . . . . . .
26
On-board computer . . . . . . . . . . . . . . . . . . . . 28
Operation (multifunction steering wheel) . 29
On-Board Diagnostic System (OBD)
Data Link Connector (DLC) . . . . . . . . . . . . . .
26
Electronic speed limiter. . . . . . . . . . . . . . . 130
Opening. .. .. .. ........... ...... .. .. .. 35
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 230
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Luggage compartment lid . . . . . . . . . . . . . . 4 1
Panorama roof . . . . . . . . . . . . . . . . . . . . . . . 44
W indows . . . . . . . . . . . . . . . . . . . . . . . . . . .
43
Opening/closing
with the central locking sw itch . . . . . . . . . .
39
with the convenience key . . . . . . . . . . . . . . . 38
with the door lock . . . . . . . . . . . . . . . . . . . . 39
318 Other
equipment (efficiency program) . . . . .
31
Outs ide temperature display . . . . . . . . . . . . . 11
Overview (Cockpit) . . . . . . . . . . . . . . . . . . . . . . 8
Owner's Literature
5
p
Paint damage . . . . . . . . . . . . . . . . . . . . . . . . 276
Paint No . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Panorama roof . . . . . . . . . . . . . . . . . . . . . . . . 44
Convenience opening/closing . . . . . . . . . . .
43
Panorama sunroof
Emergency closing . . . . . . . . . . . . . . . . . . . .
45
Parking aid
Cleaning sensors/camera . . . . . . . . . . . . .
275
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . 85
Emerg ency braking function . . . . . . . . . . . . 87
Indicato r light . . . . . . . . . . . . . . . . . . . . . . . 19
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Power supply failure . . . . . . . . . . . . . . . . . . 85
Setting/releas ing . . . . . . . . . . . . . . . . . . . . . 85
Start ing from a stop . . . . . . . . . . . . . . . . . . 87
also refer to Parking brake . . . . . . . . . . . . . 85
Parking ligh t . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Parking system Adjusting the display/warning tone . . . . .
157
Cl eaning the rearview camera . . . . . . . . . . 154
Malfunction . . . . . . . . . . . . . . . . . . . . . . . . 15 7
Parking system plus . . . . . . . . . . . . . . . . . . 152
Peripheral display . . . . . . . . . . . . . . . . . . . 152
Rearv iew camera . . . . . . . . . . . . . . . . . . . . 153
also refer to
Parking systems . . . . . . 152, 153
Parking systems . . . . . . . . . . . . . . . . . . . . . . 151
Rear parking system . . . . . . . . . . . . . . . . . 152
Parking (automatic transmission) . . . . . . 91, 92
particulate filter
refer to Diesel particu late filter . . . . . . . . 233
Parts replacement . . . . . . . . . . . . . . . . . . . . 308
Pass-thro ugh . . . . . . . . . . . . . . . . . . . . . . . . . 67
PASSENGER AIR BAG OFF light . . . . . . . . . . 1 96
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
171
Periphera l display . . . . . . . . . . . . . . . . . . . . . 152
Physical principles of a frontal collision
177
Plug- in-Hybrid-Drive
High-voltage battery . . . . . . . . . . . . . . . . . . 99