2015 AUDI A3 engine

prevent it from being damaged and having
to be replaced .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is loca ted in the luggage compart­
men t under the floor. Before yo u check any­
thing in the l uggage compartment,
read and
hee d all WARNINGS
¢ _A .
Always heed the sa fe ty warning s, when work­
i ng on the vehicle battery or the vehi cle elec ­
trica l system to prevent injury.
The following WARNINGS are very
impo rtant when working on the battery:
Alway s heed th e following WARNING SYM-
BOLS and saf ety precaution s when working
o n the b att ery.
®
Always wear e ye protection.
A
Batter y ac id contains sulfu ric acid .
Always w ear glo ves and e ye p rote c-
t ion .
@
No
- spark s
- flames
- smo king.
~
Wh en a battery i s charge d, it produ -
ce s hy d rogen ga s whi ch i s ex plo siv e
and could cau se perso na l injur y.
®
Alway s keep the b atter y w ell o ut of
r e ach of childr en.
A WARNING
Whenever working on the bat tery or on
the electrical system, there is the risk of
injury, accident and even fire. Read and
heed the following WARNINGS :
- Always wear eye p rotection. Do not let
battery acid or any lead particles get on
yo ur sk in or clothing. Sh ield your eyes.
Explosive gases can cause blindness or
other injury.
-
Checking and Fillin g 221
-Battery acid contains sulfuric acid . Sulfu­
ric acid can cause blindness and severe
burns.
- Always wear g loves and eye protection.
Do no t tilt the ba ttery because acid
could leak out of the ventilat ion open­
ings .
- If you ge t bat tery acid in your eyes or
on your skin, immediately rinse with
cold water for several minutes and get
med ical attention .
- If you should ingest any batte ry acid,
seek medical attention immediately.
- Do not expose the ba tte ry to an open
f lame, e lectric sparks or an open light .
- Do not smoke.
- Do not in terchange t he positive and neg-
ative cables.
- When working on t he battery, be su re
not to short-cir cuit the termina ls w ith
too ls or othe r metal objects. This would
cause the battery to heat up very quickly,
which could lead to damage or explosion
and pe rsonal injury.
- When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal inju ry.
- Always keep the battery well out of the
reach of children.
- Before work is done on the elect rical sys ­
tem, disconnect the negative ground ca ­
ble.
- Before performing any work on the e lec­
trical system, switch off the engine and ignit ion as well as any electrical equip­
ment. The negative cable on the battery
must be disconnected. If you are just go­
ing to replace a light bulb, then it is
e nough to switc h off the lights.
- Before disconnecting the battery, switch off the anti-theft alarm system! Other­
wise you will set off the alarm.
- When disconnecting the battery, first
disconnect the negat ive cab le and then
the posit ive cab le.
- Before reconnecting the battery, ma ke
sure all e lectr ica l consumers are sw itch­
ed off. Reco nne ct the pos it ive cable first
•
•
•

222 Checking and Fill in g
and then the negative cable . Never inter­
change the cables -this could start a fire!
- Never charge a frozen or a thawed-out
battery. It could explode! If a battery has
frozen, then it must be replaced. A dead battery can freeze over at 32°F (0°C).
- Make sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery.
- Never use batteries which are damaged.
There is the danger of an explosion! Al­
ways replace a damaged battery.
&_ WARNING
California Propos ition 65 Warning:
- Battery posts, terminals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
t ive p roblems. Wash hands after han­
dling.
(D Note
- Do not d isconnect t he veh icle battery
when the ignition is on or when the en­
gine is running, otherwise, you will dam­
age ele ctron ic componen ts in the elec tri ­
ca l system.
- If your vehicle is going to stand for a
l ong period of time wi thout being driven,
protect the battery from "freezing", oth­
e rwise it w ill be damaged and wi ll then
have to be replaced.
Battery charging
Starting the engine requires a well charged battery.
F ig . 1 54 Engine co mpartment : connectors for a charg­
er and jump start cab les
Alwa ys read and heed all WARNINGS below
c> &. and c> &. in Working on the battery on
page 221.
.. Switch off the ignition and all electrical con­
sumers.
.. Make sure the area is well ventilated when
you charge the battery .
.. Open the eng ine hood
r=;, page 211 .
.. Open the red cover on t he positive pole
r=;, fig. 154 .
.. Clamp the ch arger term inal clamps as in­
structed on the
batter y terminal (+ ) and on­
ly o n the
body ground po int (-) .
.. On ly now plug the mains lead for the charg­
ing equ ipment into the wa ll outlet and turn
iton
c> &, .
.. Make sure th e charging rate is not over
30 amps /14 .8 volts .
.. When the battery is fully charged: Turn the
charg ing equipment off and remove the
mains lead from the wall ou tlet .
.. Now remove the clamps for the cha rging
equipment .
.. Close the red cover on the positive pole .
.. Close the hood
~ page 211.
A d ischarged bat tery can freeze at tempera ­
tu res of only 32 F
0 (0 °C). Allow a frozen bat­
tery to thaw completely before attempting to charge it
r=;, .&, . However, we recommend not
using a thawed battery again because the bat­
te ry casing can be cracked due to ice forma-
t ion and can leak battery acid . ..,.

Battery charging (Ma ximum charging rate
o f 30 am ps/ 14.8 volt s)
When charging at
low voltages (e.g . with a
tri ckle ch arg er), the batte ry cables do not
have to be d isconnected first. The battery
caps should
not be opened when charging a
battery .
It is not necessary to remove the battery from
the luggage compartment, and it is also not
necessary to disconnect the cables.
F ast charging th e battery (charging rate
a bo ve 14 .8 volt s)
For technical reasons do not use a battery
charger that uses voltage greater than 14.8
volts to charge your ve hicle 's battery .
A WARNING
Charging a battery can be dangerous .
- Always follow the operating instructions
provided by the battery charge r manu­
fact urer when charging your battery .
- Never charge a frozen battery . It may ex ­
plode because of gas t rapped in the ice .
Allow a frozen battery to thaw out first.
- Do not reuse batteries which we re fro ­
zen . The batte ry housing may have
cr acked and weakened whe n the battery
froze.
- Charge the battery in a we ll ventilated
area. Keep away from open flame o r ele c­
trical spark. Do not smoke. Hydroge n gas
generated by the battery is exp losive.
- T o redu ce the danger o f explosion , never
conne ct or disconnect cha rger cables
wh ile the charger is operating .
- F ast charg ing a battery i s dangerous and
sho uld on ly be attempted by a compe­
tent technician with the proper eq uip ­
me nt.
- Battery acid that may spill during charg ­
ing should be washed off with a so lution
of warm water and ba king soda to neu­
tralize the acid.
Checking and Fillin g 223
@ Note
Neve r use a fast charger as a booster to
start the eng ine . This w ill seriously dam­
age sens itive e lectronic components, such
as contro l units, relays, radio, etc., as well
as the batte ry charger .
Battery replacement
The new ba ttery mus t hove the some specifi­
cations and dimensions as the original equip­
ment battery .
Intelligent energy management in your vehi­
cle is responsible for distributing the electri­
ca l ene rgy throughout your vehicle
~ page 190 . The intelligent energy manage­
ment system will keep the engine battery
c h arged better than vehicles without this sys­
tem. To make sure the addition al ele ctri cal e n­
ergy is ava ilab le once again after yo u have
changed the batte ry, we recommend that you
insta ll batteries of the same type an d manu­
facture on ly (the same as those insta lled at
the time your veh icle was delivered) . Specif i­
cations are listed on the battery housing. Your
authorized dea ler must code the battery in
the ene rgy management system to enab le you
to use the ene rgy management functions cor­
re ct ly afte r repla cing the battery.
The new battery must have the same capacity,
vo ltage ( 12-volts) , amperage, construction
and plug sea ling .
When install ing the battery, make sure the ig­
nition and a ll electrical consumers are switch ­
ed off .
~ Note
Make sure the ventilat ion hose on the side
of the battery is con nected, otherwise
fumes o r batte ry acid can lea k out.
@) For the sake of the environment
Because of the prob lem of proper disposal
of a battery, we recommend your author ­
i zed Audi dealer change the battery for
you. Batteries contain sulfur ic acid and ..,.
•
•
•

224 Checking and Filling
lead and must always be disposed of prop­
erly in compliance with a ll environmental
regulations. D isposing of vehicle batteries
improperly is very dangerous to the envi­
ronment.
Windshield washer
fluid container
Fig. 155 Engine co mp artmen t: cove r on the wind shield
an d h ead ligh t* washer fluid rese rvo ir
The washer flu id container is marked with the
symbol Won its cap
~fig. 155, ~page 212 ,
fig. 149 .
.. Before you check anyth ing in the engine
compartment,
always read and heed all
WARNINGS ~page 210 .
.. Lift the filler cap tongue to add washer flu­
id. You can fill the container to the top .
.. Press the cap back onto the f iller neck after
filling the container.
You can find the reservoir
ca pa city in the table
in ~
page 266 .
C lean water should be used when filling up.
If
possible, use soft water to prevent scaling on
washer jets. A lways add a glass cleaner solu­
tion (with frost protection in the winter) .
@ Note
- Do not mix engine coolant antifreeze or
any other additives to fill up the wind­
shield washer reservoir.
- Do not use a glass cleaner that contains
paint solvents, there is a risk of damag­
ing the paint.

230 Tire s and wheel s
you have stored . The system does not recog ­
nize the load condition of your vehicle.
The effectiveness of the tire pressu re monito r­
ing system w ill be impaired if you store nor­
mal load pressures but then operate the vehi ­
cle at its maximum load¢.&. .
See the il lustration¢
fig. 156 for the location
of the label on dr iver's side 8-pillar (color of
the actua l labe l and exact location on the ve­
hicle wi ll vary slightly).
Note that the followi ng tab le is accurate at
the time o f go ing to press and is subject to
Model / Tire de
signation
change. In the event of discrepancies, the t ire
pressure label is located on the driver's side 8-
pillar always takes precedence .
T he table below lists the recommended cold
ti re inflation pressu res for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as original
equipment, or as a factory option.
Tire pressure
Engine normal load condition full load condition
front rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
A3: 225 /45 Rl 7 91 Y
32 220 29 200 35 240 35 240 1
.8 lit er High P erform ance
4 -cy lind er
22 5/40 R18 92Y XL
Hi gh Perfo rmance
35 240 32 220
35 240
35 240
2
2 5/45 Rl 7 91H
35 240
32 220 39 270 39 270 All S
ea son
2 25 /40 R18 92H XL
35 240 32 220 39 270 39 270 All Season
2 35/35 Rl 9 91 Y XL
32 220 29 200 35 240
35 240 High Performan
ce
C o mp act spar e whe el
60 420 60 420
60 420 60 420 11
25/70 R 18
A 3: 225 /45 Rl 7 91Y
33 230 30 210 36 250 36 250 2.0 liter High Perfo rman ce
4 -cy linder
22 5/40 R18 92Y XL
High Performan ce
33 230 30 210 36 250 36 250
225 /45 R1 7 91H
36 250 33 230 41 280 41 280 All Seaso n
225 /40 R18 92H XL
36 250
33 230 41 280
41 280 All Seaso n
23 5/3 5 R1 9 9 1 Y XL
33 230 30 210 36 250 36 250 High P erformance
C o m pact spa re w heel
60 420 60 420 60 420 60 420 1125 /70 R18
X L= reinf orced or extra lo ad tir e. It m ay als o a ppe ar as x l, EX TRA L OAD , or RF on the ti re side-
wall .

246 What do I do now?
What do I do now?
Luggage compartment
lid emergency release
In case of an emergency , the rear lid can be
opened from the inside using the trunk es­
cape handle .
Fig. 162 Re ar lid op ening : access to th e e merg en cy re­
l ease
To reach the emergency release mechanism,
the rear bench seat backrest must be folded down
~ page 61 .
,. Push the latch upward in the direction of the
arrow until the lock releases .
The trunk escape handle inside the rear lid is
made of fluorescent material to glow in the
dark .
A WARNING
The trunk escape handle is to be used only
m an emergency .
@ Tips
The emergency release lever should never
be used as a handle for closing the rear lid.
General information
,. Park the vehicle as far as possible from mov­
ing traffic in the event of a flat tire. In the
event of a flat tire, park the vehicle on a lev ­
el surface .
It you are on a steep incline, be
especially careful.
,. Set the parking brake.
,. Switch the emergency flashers on.
• Put on a reflective vest, if available.
• Setup the warning triang le, if available . •
Have the passengers exit the vehicle. They
should move to a safe place, for examp le
behind a guard rail.
A WARNING
-
Pay attention to the steps above. They are
for your protection and the for the safety of other drivers.
A WARNING
Improper use of the vehicle jack can cause
serious personal injuries .
- Never use the screw driver hex head to tighten wheel bolts, since the bolts can­not attain the necessary tightening tor­
que if you use the hex head, potentially
causing an accident .
- The factory-supplied jack is intended on­
ly for your vehicle model. Under no cir­
cumstances should it be used to
lift
heavy vehicles or other loads; you risk in­
juring yourself.
- Never start the engine when the vehicle
is raised, which could cause an accident.
- Support the vehicle securely with appro­
priate stands if work is to be performed
underneath the vehicle; otherwise, there
is a potential risk for injury.
- Never use the jack supplied with your
Audi on another vehicle, particularly on a
heavier one. The jack is only suitable for
use on the veh icle it came with.
(D Tips
- Some of the onboard items listed above
are provided on certain models only or
are optional extras.
- Before storing the jack*, make sure it is
wound back down as far as it wil l go.

248 What do I do now?
-Do not drive faster than 50 mph (80 km/
h) . You risk having an acc ident.
- Avoid full-throttle acce le ration, heavy
braking, and fast corner ing. You risk hav­
ing an acc ident.
- Never drive us ing more than one spare
wheel and tire. You risk having an acci­
dent .
- Norma l summer or winter tires must not
be mounted on the compact spare whee l
rim.
- For technical reasons, the use o f ti re
chains on the spare tire is not permitted.
If it is necessary to drive with tire chains,
the spare whee l must be mounted on the
front axle in the eve nt of a flat in a rear
t ir e. Th e newly ava ilable front w heel
must the n be installed in pla ce of the
re ar wheel wi th the flat ti re. Ins tal ling
the ti re chai n befo re mo unt ing the wheel
and tire is recommen ded .
- L oose items in the p assenge r comp art ­
ment can ca use serio us personal inj ury
dur ing hard braking or in an acc ident.
N ever sto re the inf latable spare tire or
jack and t ools in the passenger c ompart­
me nt.
- No rma l summer or wi nte r tires must not
be m ounted on the compact spare wheel
rim .
Removing the subwoofer
App lies to vehicles: with subwoofer
The subwoofer must be removed before the
spare wheel* can be removed.
F ig . 166 Spare w hee l well : subwoofe r
Removing the subwoofer
.,. Lift the c argo floor i=:> page 247, fig . 16 4.
.. Press the connector tabs (!) i=:> fig. 16 6 to-
gether .
.. Re move the connector @and set the re-
moved cab le aside .
.,. Remove the bo lt @ .
.. Carefully remove the subwoofe r.
Installing the subwoofer
.. Carefully place the subwoofer n the rim
we ll. The word "FRONT" on the subwoofer
m ust face forward.
.. Insert the con nector that was removed.
.. Secure t he subwoofer w ith the bolt .
.. Fold the cargo floo r cover back into place.
Changing a wheel
· Before changing a wheel
O bserve the following prec au tions f or your
own and your p assenger's safety when chang ­
ing a wheel .
.. Afte r you ex perie nce a ti re fail ure, p ull the
car we ll away from mov ing tr affic and try to
reach level ground before you stop
¢ ,&.
.. All passengers should leave the car and
move to a safe location ( for instance, behind
the guardrail)¢ ,&.
.. Engage the parking brake to prevent your
veh icle from rolling unintentionally <=>,& .
.. Move selector lever to position Pi=:> ,& .
.. If you are towing a t railer, unhitch the trailer
from your ve hicl e.
.. Ta ke t he ja ck ¢
page 247 and the spare tire
¢ page 247 out of the luggage compart­
ment .
A WARNING
You o r you r passengers could be inj ured
while c hanging a w heel if you do not fo l­
l ow these safety precaut io ns:
- If you have a flat tire, move a safe d is­
tance off the road. Turn off t he engine,
tur n the eme rgency flashers on and use
other warni ng devices to a le rt other mo­
torists.
-

hold on to the ca r to keep your ba lance
and take care not to slip.
Raising the vehicle
Th e ve hicl e must be li~ed with the jack first
before the wheel can be removed.
F ig. 170 Sill p anels : m arkin gs
Fig. 171 Sill: posi tioning th e vehicle jack
.. Place the vehicle jack (vehicle tool kit) on a
firm surface . Use a flat, stable support if
necessary . On a slippery surface such as tile,
you should use a non -slip pad (such as a rub ­
ber mat) ¢_& .
.. Engage the
p arking brak e to prevent your
vehicle from rol ling u ninten tionally.
.. Move the
se lector leve r to pos ition P.
.. Find the marki ng (imprint) on the si ll that is
nearest the wheel that wi ll be changed
¢ fig . 170 . Behind the marking, there is a
lifting point on the si ll for the vehicle jack.
.. Vehicles with a sill : Note the position of the
s ill when pos ition ing the vehicle jack
¢ fig . 171.
.. Turn the
ve hicle jack located under the lift­
ing poin t on the s ill to raise the jac k until its
arm @
Q fig. 171 is located under the des­
ignated plastic mount c:::>
A, ¢(D .
.. Align the jack so that its arm @c:::> fig. 171
engages in the designated lifting point in
What do I d o now ? 251
the door si ll and the movable base ® lies
flat on the ground. The base @ must be ver­
tical under the lifting point @ .
.. Wind the jack up further until the flat t ire
comes off the ground
c:::> _& .
Position the vehicle jack
onl y under the desig­
nated lifting points on the si ll
c:::> fig. 170.
There is exactly one locat ion for each wheel.
The jack must not be positioned at any other location ¢ 8 ¢(1).
An
uns table surface under the jack can cause
the vehicle to slip off the jack. Always provide a firm base for the jack on the ground . If nec­
essary place a sturdy board or sim ilar support
under the jack . On
hard, slippery surfaces
(such as tiles) use a rubbe r mat or similar to
prevent the jack from slipping
Q & .
_&. WARNING
-You or your passengers co uld be in ju red
while changing a wheel if you do no t fo l­
low these safety preca utions:
- Position the vehicle jack on ly at the
designated lifting points and align the
j ac k. Otherw ise, the vehicle jac k co uld
slip and cause an injury if it doe s not
h ave sufficient hold on the vehicle .
- A soft or unstable su rface unde r the
ja ck may cause the ve hicle to slip off
the jack . A lw ays p rov ide a firm b ase for
the j ack on the ground . If necessary,
u se a st urdy board under the jack .
- On hard, slippery surface (such as t iles)
u se a rubber mat or similar to prevent
the jack from slipping .
- Only raise your vehicle with the vehicle
j ack provided by the factory . If you use
a veh icle jack for another vehicle, you r
vehicle can slide and cause injury .
- Changes in tempe rature or load can af­
fect the height of the veh icle .
- Never sta rt the engine when the vehi­
cle is raised , which cou ld cause an acci-
dent.
~