2012 AUDI A3 Engine

Warm and cold Climate controls
Description
The air conditioner is fully automatic and is
designed to maintain a comfortable and uni­
form climate inside the vehicle .
We recommend the following settings:
... Se lect and set a temperature between 64 °F
(+ 22 °C) and 84 °F (+28 °C).
... Press the
!AU TO ! button.
With this setting, you attain maximum com­
fort in the least amount of time. Change this
setting, as desired, to meet your personal
needs.
The climate controls are a combination of
heating, ventilation and cooling systems,
which automatically reduce humidity and cool the air inside your vehicle.
The air temperature, air flow and air distribu­
tion are automatica lly regulated to achieve
and maintain the desired passenger compart­
ment temperature as quickly as possib le.
The system automatically compensates for
changes in the outside temperature and for
the intensity of the sunlight entering the vehi­
cle. We recommend you use the
Automatic
mode c> page 81 for year-round comfort.
Please note the following:
Turn on the air conditioner to reduce humidity
in the vehicle. This also p revent the windows
from fogging up .
When the outside temperature is high and the
air is very hum id,
condensation from the
evaporator may drip under the vehicle . This is
normal and does not indicate a leak.
If the outside temperature is low, the fan nor­
mally only switches to a h igher speed once
the engine coolant has warmed up sufficient ­
ly.
Warm and cold 79
T he air conditioner temporari ly switches off
when you drive off from a standstill using full
throttle to save engine power.
T he compressor also switches off if the cool­
ant temperature is too high so that the engine
can be adequately cooled under extreme
l oads.
Air pollutants filter
T he air pollutants filter (a combined particle
filter and activated charcoa l filter) reduces or
eliminates outside air pollution (dust, or pol­
l en) from entering the vehicle .
T he air pollutants filter must be changed at
the interva ls specified in yo ur Warranty
&
Maintenance booklet, so that the air condi ­
tioner can properly work.
If you drive your vehicle in an area with high
air pollution, the filter may need to be
changed more frequently than specified in
your Audi Warranty
& Maintenance booklet. If
in doubt, ask your authorized Audi Service Ad­
visor for advice.
Energy management
To prevent the battery from being discharged
and to restore the ba lance of energy, compo­
nents which require large amounts of energy
are temporarily cut back or switched off c> page 167. Heating systems in particular re­
quire a great deal of energy. If you notice, for
example, that the rear window heater is not
heating, then it has been temporarily cut back
o r switched off by
energy management.
These systems are available again as soon as
the energy balance has been restored.
_& WARNING
.-----
Reduced visibility is dangerous and can
cause accidents .
- For safe driving it is very important that
all windows be free of ice, snow and con-
densation.
- Fully familiarize yourself with the proper
use and function of the heating and ven­
tilation system and especia lly how to de­
fog and defrost the windows.

conditioner automatically se lects the settings
assigned to that key. This way every driver will maintain his/her own persona l settings and
does not have to reset them manually.
(D Tips
If a d ifferent driver uses your key and
changes the air conditioner settings, the
latest adjustments w ill erase and rep lace
the settings you have stored.
mP Rear window defogger
T he rear window defogger clears the rear win ­
dow of conden sation .
Fig. 98 Swi tch for rea r wi ndow defogger w ith a ir -con ·
d it io nin g
.. Press the QiP switc h to switch the rear win-
dow defogger on and off.
The defogger works on ly with the engine run ­
n ing. When the defogger is switched on, an
indicator light in the switc h comes on.
The rear w indow defogger switches
off au to­
matica lly afte r abo ut 20 m inutes.
@ For the sake of the environment
T ur n the defogger off when the rea r win­
dow is clear. When you save elec tricity, you
save fuel.
Additional heater
Applies to vehicles: with diesel engine
.. Switc h the Additional heate r to AUTO .
Vehicles w it h diese l eng ine s are equipped
with an add it ional heate r to warm the interior
of the vehicle mo re q uick ly. The additional
W arm and cold 85
heater switches itse lf on and off automatically
when the o utside temperature is below 50 °F
(10 °C) and the engine is running, depending
o n the coolant temperature , interior tempera ­
ture and the selected temperature.
Electrically heated
front seats
Applies to vehicles: with electrically heated front seats
With the ignition on , the seat cushion and
backrest of the front seats can be heated.
F ig . 99 Ce nter co nsole: t hu m bwhee ls for front seat
h eat ing
Use the t humbwheels in the center conso le
c;:> fig . 99 to turn on and adjust front seat
heating. An infin ite range of positions are pos ­
sible .
.. Ro ll t he thumbw heel
(D (dr iver's seat) or@
(front passenger's seat) from pos ition
( 0 )
upward in order to activa te the heati ng e le ­
ments .
.. Select the desired temperat ure setting from
positions 1 t hrough 6.
When the hea ting element is activated, the
numbers on the thumbwheel will illuminate .
& WARNING
Individuals wit h reduced sensitiv ity to pai n
or temperature cou ld deve lop burns when
using the seat heating funct ion. To reduce
the r isk of injury, these ind ividuals should
not use seat heating .

86 Warm and cold
(D Note
To prevent possible damage to the heating
elements, do not kneel on the seats or ap­
ply a heavy load to relatively small areas of
the seat.
Engine preheater
Applies to vehicles: with engine p reheate r
Use of the engine pre heater is recommended
when the ambient temperature is below
-5 °F
(-20 °C) .
Fig. 100 In t he l eft fron t bump er: en gine preheater
co nn ect ion socket
The engine preheater slowly w arms the en­
gine coolant using a heating element when
the vehicle is parked. The included cable
1>
must be connected to a 120 Volt Ground Fault
Circuit (GFI) protected outlet that is protected
from water (in your garage, for instance).
When the coolant is preheated, the engine
reaches its operating temperature more quick­
ly and will use less fuel and produce fewer
polluting emissions during the warm-up
phase.
Preheating the engine can take up to 3 hours
depending on the temperature outside.
Connecting the engine preheater
- Only use the cable provided.
-All cables and connectors that are used
must not be damaged
¢ .&.­
-Open the cover Q fig. 100 @.
l) Th e cabl e is de live red w it h veh icles i n Canada a s
s tandard e quipmen t. The cable c an be o btain ed fro m
an a uth orize d Au di d ea le r fo r veh icl es in the USA.
- Plug the connecting cable into the socket @
Q.ii_.
-Connect the connecting cable to the power
cord.
- Attach the extensions cord to the connector
cable. Always use a 12 gauge or heavier
heavy -duty extension cord that can be prop ­
erly grounded to a three-prong Ground Fault
Circuit (GFI) wall outlet and is not longer
than 100
ft (30 meters).
- Always plug the preheate r into an 120 Volt
Ground Fault Circuit (GFI) wall outlet that is
properly protected against rain and other
moisture. Never plug the preheater into a
normal outlet regardless of whether it is
grounded or not .
- Always disconnect the connecting cable and
close the cover
Q fig . 100 @ before starting
the engine.
_&. WARNING
-
Using incorrect or damaged outlet and
power cords, using electrical accessories
incorrectly or ignoring safety precautions
can lead to short circuits, accidents, inju­ ries and life-threatening electric shocks.
- Always plug the preheater into a
120 Volt Ground Fault Circuit (GFI) wall
outlet that is properly protected against
rain and other moisture.
- Always check the fuse protection of the
120 Volt power source before using the
connecting cable .
- Always use a 12 gauge or heavier heavy­
duty extension cord that can be properly
grounded to a three-prong GFI outlet .
The extension cord must not be longer
than 100
ft (30 meters).
- Always connect the cable to a 120 Volt
outlet that is grounded and protected
from water .
- Check the cable for damage before every
use . Never use a damaged cable.
It must ~

be replaced. Please see your authorized
Audi dealer.
- Only use the cable provided*.
- Always remove the connecting cab le be-
fore starting the engine .
- Never attempt to alter or repair electri­
cal components.
Warm and c old 87

Ignition lock and ignition switch
Ignition lock
The engine can be started or turned off with
the ignition key.
Fig. 102 I gni tion lock positio ns
Ignition off@
In position ¢ fig. 102@both the ignition and
engine are off, and the steering is locked.
To
lock the steering after you have removed
the ignition key, turn the steering wheel in ei­
ther direction until you hear it lock into place.
You shou ld always lock the steering whenever
you leave your vehicle. This makes a vehicle
theft even more difficul t
q ,&.
Ignition on CD
If it is difficult to turn the key after you have
inserted it into the ignition lock, turn the
steering wheel back and forth. This will take
the load off the steering lock mechan ism and
you will be able to turn the key freely and
start the engine. On vehicles with a diesel en­
g ine*, the system can preheat in this pos ition .
Starting the engine @
In this position the engine starts. While the
engine is starting, the power supply to the
headlights and other electrical consumers is
temporarily interrupted to conserve battery power. After the engine has started, release
the key and it will return to position @.
Before the starter can be operated again the
key must be turned back to position @. The
non-repeat lock prevents you from damag ing
the starter when the engine is running.
On the road 89
A WARNING
-Never remove the key from the ignition
lock wh ile the vehicle is moving. The
steering wheel will lock caus ing loss of
control.
- If you have to leave your vehicle - even
for just a minute -always remove the ig­
nition key and take it with you. This is es­
pecia lly important if you are going to
leave children behind in the vehicle. The
children could start the engine or use
other vehicle controls. Unsupervised use
of vehicle controls (for example, power
windows) can cause serious personal in­
juries.
(D Tips
If the vehicle battery has been disconnect­
ed and then reconnected, then you must leave the key in position @for about 5
seconds before you can start the engine.
Ignition key safety lock
Applies to vehicles: wit h automatic transmission
The ignition key can only be removed when
the selector lever is in the "P" (Park) position.
Place the selector lever in the "P" position be­
fore switching off the engine .
After switching off the ign ition, the ignition
key can on ly be removed from the ignition
lock when the selector lever is in the "P"
(Park) position. After you have removed the
key, the se lector lever is locked and cannot be
moved.

90 On the road
Starting and stopping
the engine
Starting the engine
The engine can only be started with your orig­
inal Audi key.
Fig. 10 3 Igni tio n key pos itio ns
Vehicles with a gasoline eng ine:
.. Move the selector lever to the neut ral posi ­
t ion (a utomatic transmission): se lector lever
in Por
N) c> .&_ .
.. On vehicles with manual transmission, fully
depress t he clu tch pedal.
.,. Turn the ig nition key to position @
¢ page 89, fig. 102 -do not d epress th e gas
peda l when start ing the e ngine!
.. Let go of the key as soon as the eng ine
s tar ts.
Vehicles with a diesel engine:
.. Set the parking bra ke .
.. Move t he sele cto r lever to the neut ral posi­
t ion (a utomat ic tr ansm iss ion): se lecto r lever
i n
P or N) c> .&_ .
.. On vehicles wi th m anu al transm is s ion, fully
depress the clutch pedal.
.. Turn the ignition key to position
(D
¢ fig . 103 . The glow plug warning light II
lights up while the glow plugs are warming
up .
.. When the warning light goes out, tur n the
i gnition key to posi tion @to s tart the en­
gine
c> page 89, fig . 102 . Do no t depress t he
gas pedal when s tart ing the engine!
.. Let go of the key as soon as t he eng ine
sta rts . A cold engine may sound lo
ud after it has
been started . This is due to the hydraulic
valves b uilding up o il pressure. This is normal
and is not a need for co ncern .
If the engine does not start immediate ly, stop
t rying after 10 seconds and then try to restart
t h e engine about
30 seconds later.
Glow plug system*
Diesel engines are e quipped w ith a glow pl ug
system whose prehe ating time is co ntrolled
by the coo la nt an d ou tside temperature . Sta rt
the engine
immediately after the g low plug
i ndicator light
II switches off.
T he glow plug indica to r ligh t will only illumi­
nate fo r approximate ly 1 second w hen t he en ­
gine is warm or the outside temperature is
higher than
46 °F (8 °(). That means yo u can
start the eng ine
immedia tely .
To start the diesel eng ine after the fuel
tank has been run dry
If the fuel tank was r un comp lete ly dry, the
starting process after refue ling with diesel
fuel can take longer than usua l - up to one mi­
nute . This is because the fue l system first has
to be vented of a ir wh ile s tarting .
A WARNING
-Neve r sta rt or l et the eng in e r un in a con-
fi ned o r encl ose d area. Exhaus t fumes
fr om the e ngine co ntain ca rbo n m onoxide ,
a colorless and odorless g as. Ca rbon mo n­
oxi de can be fatal if inhaled .
- N ever le ave the engi ne id ling una tten d­
ed . An unat tende d veh icle w ith a run ning
e ng ine poses a dan ger of personal injury
or theft .
(D Note
-Av oid high engine spee ds, fast a cceler a­
t ion or heavy engine loa ds w hile the en ­
gine is st ill co ld. This could damage the
eng ine .
- The e ngine cannot be starte d by pushing
or towing t he vehicle . .,.

@ For the sake of the environment
To avoid unnecessary engine wear and to reduce exhaust emissions, do not let your
vehicle stand and warm up. Be ready to
drive off immediately after start ing your
veh icle. Mainta in moderate speed until the
engine is completely warm . Remember,
the engine performs best at operating
temperature .
Stopping the engine
.. Turn the ignition key to position@
¢page 89, fig. 102.
_& WARNING
-Never turn off the engine unti l the vehi­
cle has come to a complete stop.
- The brake booster and servotronic on ly
work when the engine is running . With
the ignition turned off, you have to apply
more force when steering or braking.
Since you cannot steer and stop normal­ ly, this can lead to accidents and serious
injuries.
- The rad iator fan can continue to run for
up to 10 minutes even after you have
tu rned off the eng ine and removed the
ignition key. The radiator fan can also
turn on again if the engine coolant heats
up because of intense sunlight or heat
build-up in the engine compartment.
(D Note
Do not stop the engine immediate ly after
hard or extended dr iving. Keep the engine
running for approximately two minutes to
prevent excessive heat build-up .
On the road 91
Parking brake
Parking brake
When the parking brake is set, it prevents the
vehicle from rolling away unintentionally .
Fig. 104 Cente r co nso le: Park ing b rake set
Setting the parking brake
.. Pull the park ing brake lever all the way up.
Releasing the parking brake
.. Pull the parking brake lever up slightly and
press the release button at the same time
¢fig. 104-arrow-.
.,. Keep the release button pressed and lower
the parking brake¢&_ .
If you should drive off with the parking brake
still set, a warning tone will sound and the
follow ing will appear in the instrument clus­
ter to remind you to release the parking
brake:
Parking brake set
The parking brake warning comes on only af­
ter you have driven for longer than 3 seconds
and faster than 5 mph (5 km/h) .
The parking brake warning light_
(USA)/ . (CON) illuminates when the park­
ing brake is set and you switch on the ignition .
A WARNING
Always release the parking brake com -
pletely. A partially engaged brake will
overheat the rear brakes, reduce their ef­
fectiveness and cause excessive wear. This
could lead to brake failure and an accident. .,.

92 On the road
On ly afte r th e ve hic le has come to com­
plete stop, shou ld you f irm ly set t he park­
ing b rake and either move the gea rshift
lever into 1st. gear (manual transm iss ion)
or move the selector lever into "P" (Auto­
mat ic transm ission).
Parking
To prevent a parked vehicle from rolling
away, there are a few things you should do.
When you park your ve hicle, do the following:
• Stop the vehicle using the brake pedal.
• Set the parking brake firmly.
• Move the selector lever into the
P position
( automatic transmi ssion ) or move the gear­
shift lever into 1st. gear
( manual t ransmi s­
s ion )<=:> .&,. .
• Switch off the eng ine and remove the igni-
t ion key from the ignit ion lock.
What else you shou ld do when p ark ing
your vehicl e on an incline or decline
Turn the stee ring wheel so that if the vehicle
should start to ro ll, it will roll into the curb.
If you are parking on a
decl ine (the front of
your ve hicle facing downhill), turn the front
wheels to the right so that they point
toward
the curb .
If you are parking on an incline (the font of
your ve hicle facing up hill), turn the front
wheels to the left so that they po int
away
from the curb.
Move the selector lever into the P pos ition
( automatic transmiss ion ) or move the gear­
sh ift lever into 1st . gear
(manua l tran smis­
sion) .
A WARNING
This is how yo u can red uce the risk of i n­
jury whe n leaving your veh icle.
- N ever park the v ehicle whe re it can come
in co ntac t wi th dry grass, sp illed f uel or
any ot her flammable m ater ials.
-
- Never a llow anyone -espec ially sma ll
children -to remain in the veh icle when
it is locked. Locked doors make it more
difficult for rescue rs to access t he pas­
senger compartment in t he event of an
emergency . Danger to life!
- Never leave children unsuperv ised in the
veh icle. Children could release t he pa rk­
i n g b rake or move the gearsh ift leve r out
of gear. The vehicle cou ld start to ro ll
a way an d ca use an acc ident.
- No matte r what the season is, the tem ­
pe rat ure in a par ked veh icle can reach
d angerous leve ls .
Starting on hills
App lies to vehicles : wi th hill ho ld assist
Hill hold assist makes it easier to start on
hills .
Requirement: The dr iver's door m ust be
cl osed, the seat bel t m ust be buckled and the
engine m ust be running.
The system is activated w hen the brake peda l
is dep ressed
for a few se cond s.
After releasing the brake pedal, the brake
power is held for a
brief moment to p revent
the ve hicl e from rolling back when starting. At
t hi s time, you ca n easi ly beg in to move your
vehicle.
A WARNING
= -
- If you di d no t begin moving immed iate ly
after releasing the brake pedal , under
certain ci rcumstances, the vehicle would
begin to ro ll backward. Depress the
brake peda l immediately or engage the
hand brake.
- Sh ould the engine sta ll, depress the
brake peda l immediately or engage the
hand brake .
- In order to prevent the vehicle from roll­
i n g back unintentionally when starting in
stop-and-go traffic, keep the brake pedal
depressed fo r a few seconds before driv-
ing off.
Ii),