2015 AUDI A3 engine

Starting and stopping
the engine (vehicles
with a convenience key)
St t· th · ith the
button
Applies to vehicles: with convenience key
The I START ENGINE STOPI button switches
the ignition on and starts the engine.
Fig. 66 Cente r console: START ENGINE STOP button
(w ith conven ience key)
You can start your car without using your con­
venience key. You must simply be carrying the
key with you.
Switching the ignition on and off
If the '-r, ij indicator light blinks and the mes­
sage
Please move steering wheel appears
when switching the ignition on, the steering is
locked by the steering lock. In this case, turn
the steering wheel slightly to the left/right.
.. To switch the ignition on or
off, press the
I START ENGINE STOP I button. Do not press
the brake pedal while doing this.
Starting the engine
Your vehicle is equipped with launch control.
The engine starts automatically when you
press the
I START ENGINE STOP I button brief­
ly.
.. Press the brake pedal and move the selector
lev er to the P or N position .
.. Press the
I START ENGINE STOPI button
briefly. The engine will start.
Major electrical equipment switches
off tem­
porarily when starting the engine.
Driving 73
If the engine does not start immediately, stop
the starting procedure by pushing the
I START ENGINE STOP I button again and re­
peat after 30 seconds.
Automatic start malfunction
If the [m ind icator light turns on (gasoline en­
gine) when you start the engine, there is an
automat ic start ma lfunction.
To start the engine, press and hold the
I START ENGINE STOP I button until the engine
runs.
Drive to an authorized Audi dealer or qualified
repair fac ility immediately to have the mal­
function corrected.
_& WARNING
-Never allow the engine to run in confined
spaces -there is a risk of asphyxiation.
- Always take the vehicle key with you
when leaving the vehicle, even for a short period of time . This applies partic­
ularly when children remain in the vehi­
cle. Otherwise the children could start
the engine or operate electrical equip­ ment such as power windows.
- The brake booster and power steering
only work when the engine is running.
If
the eng ine is off, you have to use more
force when steering or braking. Because
you cannot steer and brake as you usual­
ly would, this could lead to crashes and
serious injuries.
(D Note
- Avoid high engine speed, full throttle,
and heavy eng ine load as long as the en­
gine has not reached operating tempera­
ture yet. You could damage the engine.
- Th e engine cannot be started by pushing
or towing the vehicle.
@ For the sake of the environment
Do not let the eng ine run while parked to
warm up. Begin driv in g immediately . This
reduces unnecessary emissions.

74 Driving
(D Tips
-After starting a cold engine, there may
be a brief period of increased noise be­
cause the oil pressure must first build up in the hydraulic valve adjusters. This is
normal and not a cause for concern.
- If the . indicator light blinks in the in­
strument cluster before switching the ig­
nition off, the ignition will not switch on
again
Qpage 189.
-If you leave your vehicle with the ignition
switched on, the ignition will switch off
after a certain amount of time. Make
sure that electrical equipment such as
the exterior lights are switched off.
Turning th n ine off using the
button
Applies to vehicles: with conven ience key
.. Bring the vehicle to a fu ll stop.
.. Automatic transmission: Move the selector
lever into the P position.
.. Press the !START ENGINE STOPI button
Q page 73, fig. 66.
If the engine does not stop, proceed as fol­
lows
q page 75, Starting the engine if there
is a malfunction .
Steering wheel lock1
)
The steering locks when you turn the engine
off using the
I START ENGINE STOP !* button,
move the selector lever into the P position
(automatic transmission*) and open the driv­
er's door.
The locked steering helps prevent vehicle
theft.
Emergency off function
If it is necessary in unusua l circumstances, the
engine can be switched off while the vehicle is
moving at speeds less than 6 mph (10 km/h).
If you press the
I START ENGINE STOP I* but­
ton while driving, the message
Pressing
start/stop button again will switch off en-
l) This function is not availa ble in all coun tries.
gine! appears . To switch the engine off, press
the
I START ENGINE STOP !* button twice in a
row briefly or press and hold for longer than
two seconds.
A WARNING
- Never turn off the engine before the ve­
hicle has come to a complete stop . The
full function of the brake booster and the
power steering is not guaranteed . You
must use more force to turn or brake, if
necessary. Because you cannot steer and
b rake as you usually would, this could
lead to accidents and serious injuries.
- The brake booster and power steering
only work when the engine is running . If
the engine is off, you have to use more
force when steering or braking. Because
you cannot steer and brake as you usual­
ly would, this could lead to crashes and
serious injuries .
- Always take the vehicle key with you
when leaving the vehicle, even for a
short period of time . This applies partic­
ularly when children remain in the vehi­
cle. Otherwise the children could start
the engine or operate electrical equip­
ment such as power windows.
- For safety reasons, you should always
park your vehicle with the selector lever
in P. Otherwise, the vehicle could inad­
vertently roll away.
-After the eng ine has been switched off,
the radiator fan can continue to run for
up to 10 minutes -even with the ignition
switched off. It can also switch on again
after some time if the coolant tempera­
ture rises as the result of a heat buildup or if the engine is hot and the engine
compartment is additionally heated by
the sun's rays.
0 Note
If the engine has been under heavy load
for an extended period of time, heat builds up in the engine compartment after the ..,_

engine is switched off - there is a risk of
damaging the engine. For this reason, let
the engine run for at idle for approximate­
ly two minutes before shutting it off .
(D Tips
-After the engine has been switched off,
the radiator fan can continue to run for up to 10 minutes - even with the ignition
switched off.
It can also switch on again
after some time if the coolant tempera ­
ture rises as a result of heat bui ldup or if
the engine compartment is heated by
sunlight and the engine is hot.
Starting the engine if there is a
malfunction
Appl ies to vehicles: with convenience key
It may not be possible to start the engine un­
der certain circumstances , for example if the
battery in the vehicle key is drained, if inter ­
ference is affected the key or if there is a sys­
tem malfunction.
Fig. 67 Steering col umn/rem ote control key : start ing
th e engin e if th ere is a malfun ctio n
As long as the message y>l) Key not recog­
nized. See owners manual
appears, you can
emergency start your vehicle.
.. Press the brake pedal
9 &. in Starting the
engine with the
S TART ENGINE STOP but­
ton on page 73.
.. Press the l ~s~ T~A~R= T~E~N-G~I~N~E~S~T~O~P~ I button.
.. Hold the master key as shown in the illustra­
tion in the location indicated
y>>) 9 fig. 67 .
The eng ine will start .
.. If the engine does not automatically start,
press the
I STAR T ENGIN E STOP ! button
again.
Driving 75
Drive to an authorized Audi dealer or qualified
repair facility immediately to have the mal­
function corrected .
(D Tips
You can display the message that appears
during an emergency by pressing the
I START ENGINE STOP!* button.
Driver messages
Turn off ignition before leaving car. Battery
is discharging
This message appears and a warning tone
sounds if you open the driver's door when the
ignition is switched on. Turn off the ignition
so that the battery will not discharge.
Pressing start/stop button again will switch
off engine!
This message appears when you press the
!STAR T ENG INE ST OP!* button while driving
¢ page 74, Emergency off function.
Engine start system malfunction. Please
contact Service
The eng ine automatic start system has a mal­
funct ion. Drive to an authorized Audi dealer or
qualified repair facility immediately to have
the malfunction corrected. To start the en­
gine, press and hold the
I STAR T ENG INE ST OP I button.
DI Key not recognized. See owner 's manual
This message appears if there is no conven­
ience key inside the vehicle or if the system
does not recognize the key . The convenience
key may not be recogn ized, for example, if it is
cove red by an object that
disrupts the s ignal
(such as a briefcase), o r if the key battery is
weak . Electronic devices such as cell phones
can a lso interfere with the signal.
To start or stop the engine, see "Correct ing a
malfunction "¢
page 75.
Ill Key not in vehicle?
The Ill indicator light turns on and this mes ­
sage appears if the convenience key was

76 Driving
removed from the vehicle when the engine
was running.
If the convenience key is no lon­
ger in the veh icle, you cannot switch the igni­
tion on or start the engine once you stop it.
You also cannot lock the vehicle from the out­
side .
Press brake pedal
This message appears if you do not press t he
brake peda l to start the engine in a vehicle
with an automatic transmission .
Please engage N or P
This message appears whe n starting or stop­
p ing the engine if t he selecto r lever is not in
the Nor P pos ition. The eng ine will not star t/
stop.
Shift to P, otherwis e vehicle can roll away.
Door s do not lock if lev er i s not in P
This message appears for safety reasons
along w ith a warning tone . It appears if the
selecto r lever for the automat ic transm iss io n
is not in the P position when switch ing the ig­
ni tion off with the
!S TAR T ENGINE STOPI*
button . Sh ift the sele ctor leve r to t he P posi­
tion. Otherwise, the vehicle could ro ll. You al­
so cannot lock the vehicle using the locking
sensor on the door handle o r using the con­
venience key .
Electromechanical
parking brake
Operation
The electromechanical parking brake replaces
the hand brake .
Fig. 68 Center conso le: Park ing brake
.,. Pull the switch @¢ fig. 68 to set the pa rk­
ing brake. The. (USA models) . (Cana­
da mode ls) indicator light in the button and
in the instrument cluster display turns on .
.,. To release the parking brake, press the brake
pedal or the acce lerator pedal and press the
button @. The . (USA models) /. (Cana­
da mode ls) indicato r light in th e button and
ins trument clus ter tur ns off.
Your vehicle is equipped with an electrome ­
chanical pa rking brak e. The parking bra ke is
designed to p revent the veh icle from rolling
u ninte ntionally and repla ce s the hand b rake.
In add ition to the normal functions of a tradi ­
tio na l ha nd b rake, the electromechanical
parki ng b rake provides va rious conven ien ce
and safe ty f unct ions .
When starting
-The integral hill start assist helps you when
d riving by au tomatical ly re leasi ng the park­
ing bra ke ¢
page 77, Starting from a
stop.
- W hen start ing on i nclines, t he h ill sta rt as­
si st preven ts the v ehicl e from unintentiona l­
ly ro lling back . T he b raking force of the
p ar king br ake is no t released unt il su ffi cien t
driving force has been bui lt up at the
wheels .
Emergency brake function
An emergency b rak ing functions ensu res that
t h e vehi cle can be s lowed down even if the
n ormal brakes f ail¢ page 78, Emergen cy
braking fun ction.
Indicator lights
- I f the pa rk ing brake is set when the ignition
is
switched on , the. (USA models) /.
(Canad a models) indica to r li ght turns on in
t he display and b utton .
- If the pa rk ing brake is se t when the ignition
is
switched off , the. (USA models) /.
(Canada mo dels) indica tor ligh t turns on in
the display and button for about 20 sec­
onds.

& WARNING
-Do not press the accelerator pedal inad­
vertently when the vehicle is stationary and the engine is running and a gear is
selected. Otherwise the vehicle will start
to move immediately and could result in
a crash.
- If the power supply fails, the released
parking brake can no longer engage. In
this case, park the vehicle on level ground and secure it by placing these­
lector lever in the P position (automatic
transmission). See your authorized Audi dealer or qualified repair facility.
(D Note
If the symbol . in the display or the indi­
cator light. (USA models)/ . (Canada
models) in the instrument cluster flashes,
there is a malfunction in the brake system.
Please refer to the detailed description of
the indicator lights¢
page 18.
-If the indicator light . (USA models)/
• (Canada models) or
Ill turns on,
there may be a malfunction in the park­
ing brake ¢
page 19.
(D Tips
-You can set the parking brake at any time
-even with the ignition turned
off. To re-
lease the parking brake, the ignition
must be turned on and the brake pedal
must be pressed.
- If driver 's door is opened while the igni­
tion is switched on, the parking brake
sets automatically. This prevents unin­
tended 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
regular 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 ¢,&. . See your
Driving 77
authorized Audi dealer or qualified repair
facility.
· Parking
.. Press the brake ped al to stop the vehicle .
.. Pull the switch @ ¢
page 76 , fig . 68 to set
the parking brake.
.. Place the selector lever in the P position .
.. Turn the engine off¢.&_ .
.,. Turn the steering wheel when parking on in­
clines so that the wheels will roll into the
curb if the vehicle starts moving.
& WARNING ~ -
-Always take the vehicle key with you
when leaving the vehicle, even for a short period of time. This applies partic­
ularly when children remain in the vehi­
cle. Otherwise children could start the
engine, release the parking brake or op ­
erate electrical equipment such as power
windows, which increases the risk of an
accident .
- No one should remain in the vehicle
when it is locked, especially children.
Locked doors make it more difficult for
emergency workers to get into the vehi­
cle, which puts lives at risk.
Starting from a stop
The start assist function ensures that the
parking brake is released automatically upon starting.
Stopping and applying the parking brake
.. Pull the switch@¢ page 76, fig . 68 to set
the parking brake.
Starting and automatically releasing the
parking brake
Requirement: The driver's door must be
locked and the driver's safety belt must be
fastened.
.. When you press the accelerator pedal , the
parking brake is automatically released and
your vehicle begins to move.
•

78 Driving
When stopping at a traffic signal or stopping in city traffic, the parking brake can be ap­
plied. The vehicle does not have to be held
with the brake pedal. The parking brake elimi­ nates the tendency to creep when a selector
lever position is engaged . As soon as you
press the accelerator pedal, the parking brake
releases automatically and the vehicle starts
to move.
Starting on slopes
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 sufficient driving
force has been built up at the wheels.
(D Tips
For safety reasons, the park ing brake is re­
leased automatically only when the driv­
er 's safety belt is fastened and the driver 's
door is locked.
Emergency braking function
This is used if the convention brake system
fails or locks up.
~ To brake your vehicle in an emergency, pull
the @switch
¢ page 76, fig. 68 and hold it
pulled.
~ As soon as you release the@ switch or ac-
celerate, the braking process stops.
Pulling and holding the @switch while driv­
ing at a speed of about 2 mph (3 km/h) or
higher initiates the emergency braking func­
tion. The vehicle is braked at all four wheels by activating the braking hydraulics. The brake
performance is similar to heavy braking.¢.&
To help prevent activating the emergency braking by mistake, an audible warning tone
(buzzer) sounds when the @switch is pulled.
E mergency braking stops as soon as the@
switch is released or the accelerator pedal is pressed.
A WARNING
Emergency braking should only be used in
an emergency, when the normal brake
pedal has failed or the brake pedal is ob­
structed . During emergency braking, your
vehicle will brake similar to heavy braking .
ESC and the associated components (ABS,
ASR, EDL) cannot overcome the laws of
physics. In corners and when road or
weather conditions are bad, a full brake
application can cause the vehicle to skid or
the rear end to break away, which increas­
es the risk of an accident.
Hill hold
Applies to vehicles: wit h Hill Hold
Hill hold makes it easier to start on hills.
Requirement: The driver door must be closed
and the engine must be running.
The system is activated when the brake pedal
is pressed while the vehicle is stationary.
To prevent the vehicle from rolling back when
starting, the brake power is held for a brief
moment after releasing the brake pedal. Dur­
ing this time, you can easily begin to move
your vehicle.
A WARNING ......_
- The intelligent technology of Hill Hold
cannot overcome the limitations im­
posed by natural physical laws. The in­
creased comfort offered by Hill Hold
should not cause you to take safety risks .
- Hill Hold cannot hold the vehicle in all
hill start situations (for example, if the
ground is slippery or icy).
- If you do not begin moving immediately
after releasing the brake pedal, the vehi­
cle could begin to roll backward under
certain circumstances. Press the brake
pedal or set the parking brake immedi­
ately.
- If the engine "stalls", press the brake
pedal or set the parking brake immedi­
ately.
-

IIJ ACC: engine speed
This message appea rs if the d river has not
shifted up or down in time when the adaptive
cr uise con trol is braking or accelerating, caus­
ing the vehicle to exceed or to not reach the
permitted engine speed. The adaptive cruise
control turns
off . A chime so unds as a rem ind ­
er .
•••
Three wh ite dots appear if a setting cannot be
selected with the operat ing lever. For exam ­
p le, this happens if adaptive cruise control
cannot be activated when stopped because
the driver has not fastened the safety belt.
Door open
Adaptive cruise control cannot be switched on
when the vehicle is stationa ry and the driver's
door is open .
Audi adaptive cruise control 89
•

102 Audi drive select
Audi drive select
Driving settings
Introduction
Applies to vehicles: with Audi drive select
Aud i d rive select makes it possibl e to expe ri­
e nce diffe ren t types of vehi cle sett ings in o ne
ve hicl e. The dr ive r can se lect from three
c om­
fort , auto and dynamic modes using the t.'i:.:1
button in the center conso le or the MM I to
switch between a sporty an d a comfortable
driving mode, for examp le. In the
individual *
mode, the sett ings can be ad justed to your
pe rsonal preferences. This makes it poss ib le
to comb ine settings such as a sporty eng ine
tuni ng with lig ht steer ing.
A WARNING ,_ -
Im prope r use of the A udi drive select can
ca use colli sion s, oth er a cciden ts an d se ri­
ou s pe rson al injury.
Description
Applies to vehicles: with Audi drive select
The vehicle setup in each mode depends on
the vehicle's features. However, t he engine
and steering are always affected .
Engine and automatic transmission*
Depe nding on t he mode, the e ng ine and au to­
mat ic tra nsm iss ion * respond more quickly or
in a more b alance d manner to acce lerator
pedal movements.
Adaptive dampers (Audi magnetic ride)*
The adaptive da mpers use senso rs to reco rd
i nfo rmat ion rega rding s teering moveme nts,
b rak ing and a cce le ra ti on operat ions by t he
d river, road s urface, driving speed, an d load.
W ith Aud i drive se lect yo u can adjust the
adaptive dampe rs sporty (dynamic), comfort­
ab le (comfort) or balanced (auto).
Steering
T he stee ring ad apts in te rms o f stee ring assis­
tance . There are different modes
~page 103 .
Indirect stee ring that moves eas ily as in com- f
ort mode is espec ially suited to long drives
o n a hig hway. The dynam ic mode provi des
spo rty, direct steering.
F o r vehicles wi th progressive stee ring * the
stee ring pe rformance is mo re agile.
Cornering light*
T he co rne ring light adjusts when driv ing on
c u rves a t speeds between 6 mph ( 10 km/h)
and 68 mph (1 10 km/h). The pivo ting act io n
and the light ing a re a lso adapted to the
mode.
Adaptive cruise control*
T he be hav ior when accelerating can be adjust­
ed from comfor tab le to spor ty, depend ing on
t h e Au di drive sele ct mo de. Ad aptive cr uise
control also responds to the driv ing behavior
of the vehicle ahead in a more co nservative or
spo rty manne r.
(D Tips
In some mo dels, the maxim um vehicle
speed can on ly be reache d in t he a uto and
d ynam ic modes.