2011 AUDI A3 battery

-L~C::!h~e~c~k:.!_i~n~g~a~n~d~f~il~l:!_!in~g !...._ ________________________________________ _
The following WARNINGS are very important when
working on the battery:
Always heed the following WARNING SYMBOLS and safety pre­ cautions when working on the battery .
@
®
Always wear eye protection.
Battery acid contains sulfuric acid. Always wear
gloves and eye protection.
No
• s parks
- flames
• smoking .
When a battery is charged, it produces hydrogen
gas which is explosive and could cause persona l
injury.
Always keep the battery well out of reach of chil ­
dren .
& WARNING
Whenever working on the battery or on the electrical system,
there is the risk of injury , accident and even fire. Read and heed
the following WARNINGS:
• Always wear eye protection . Do not let battery acid or any lead
particles get on your skin or clothing. Shield your eyes . Explosive
gases can cause blindness or other injury!
• Battery acid contains sulfuric acid. Sulfuric acid can cause blindness and severe burns.
-Always wear gloves and eye protection. Do not tilt the
battery because acid could leak out of the ventilation open­
ings.
& WARNING (co ntinued )
-If you get battery acid in your eyes or on your skin, immedi­
ately rinse with cold water for several minutes and get medical
attention.
- If you should ingest any battery acid, seek medical attention
immediately.
• Do not expose the battery to an open flame, electric sparks or
an open light .
• Do not smoke.
• Do not interchange the positive and negative cables.
• When working on the battery , be sure not to short-circuit the
terminals with tools or other metal objects. This would cause the battery to heat up very quickly, which could lead to damage or
explosion and personal injury.
• When a battery is charged , it produces hydrogen gas which is
explosive and could cause personal injury.
• Always keep the battery well out of the reach of children.
• Before work is done on the electrical system, disconnect the
negative ground cable.
• Before performing any work on the electrical system, switch
off the engine and ignition as well as any electrical equipment.
The negative cable on the battery must be disconnected . If you are
just going to replace a light bulb, then it is enough to switch off the lights.
• Before disconnecting the battery, switch off the anti-theft
alarm system! Otherwise you will set off the alarm .
• When disconnecting the battery, first disconnect the negative
cable and then the positive cable .
• Before reconnecting the battery, make sure all electrical
consumers are switched off . Reconnect the positive cable first and
then the negative cable. Never interchange the cables· this could start a fire! ..,_

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& WARNING (continued)
• Never charge a frozen or a thawed-out battery. It could
explode! If a battery has frozen, then it must be replaced. A
discharged battery can freeze over at 32 °F (0 °C).
• Make sure the vent hose is always attached to the opening on
the side of the battery.
• Never use batteries which are damaged. There is the danger of
an explosion! Always replace a damaged battery.
& WARNING
California Proposition 65 Warning:
• Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive problems. Wash hands after
handling.
0 Note
• Do not disconnect the vehicle battery when the ignition is
switched on or when the engine is running, otherwise, you will
damage electronic components in the electrical system.
• When working on the engine, protect the battery housing from
ultraviolet (UV) rays by not parking the vehicle in direct sunlight .
• If your vehicle is going to stand for a long period of time without
being driven, protect the battery from "freezing", otherwise it will be
damaged and will then have to be replaced::::;,
page 241. •
Vehicle OP-eration
Charging of battery
All work on the battery requires technical knowledge!
Fig. 169 Engine
compartment: connec­
tors for a charger and
jump start cables
A charged battery ensures good starting performance. A
discharged battery can
freeze at temperatures of only O °C. A
frozen or thawed battery must be replaced, as the battery
housing may be cracked due to freezing and could therefore
leak acid.
- Always read and heed all WARNINGS below==> & and
==> & in "Working on the battery" on
page 239.
-Switch off the ignition and all electrical consumers.
- Make sure the area is well ventilated when you charge the
battery .
- Connect charger cables .
Charger cables must always be
connected POSITIVE
G to POSITIVE G and NEGATIVE
Oto NEGATIVE (jump start pins) (:).
-Switch on the charger.
- Make sure the charging rate is not over 6 amps.
- Turn off the charger==> &.
- Disconnect the charger cables.
Vehicle care Do-it-yourselt service iTechnical data

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- Connect both battery cables to the batt ery if necessary -
first plus, then minus .
The battery m ust not be opened!:::} 0 in "Gene ral informat ion" on
page 238.
Charging the battery
On ly use chargers with a m aximum charging voltage of 14.8 V. T he
ba ttery conne ct ing cab les do not need to be d isco nnected. Do not
open the battery when charg ing.
Read all of the manufacturer's instr uctions for the charge r be fore
charting the battery .
It is not necessary to remove the battery from the engine compart­
ment, and i t is also not necessa ry to disconnect the cables.
Norma lly, a battery should be charged at no more tha n 10 perce nt of
i t s rated capaci ty.
For example, a charging cu rrent of 4.5 amps wou ld b e used on a
battery rated at 45 Ah. Rate d capacity of the battery in your ve hicle is
listed on the batte ry housin g.
The bat tery caps shou ld
not be opened when charg ing a battery.
& WARNING
Charging a battery can be dangerous.
• Never charge a frozen battery . It may explode be cause of gas
trapped in the ice. Allow a frozen battery to thaw out first.
• Do not reuse batter ies wh ich were frozen . They must be
replaced. The battery housing may have cracked and weakened
when the battery froze .
• Charge th e battery in a w ell ventilated area. Keep away from
open flame or electrical spark . Do not smoke. Hydrogen gas gener­
ated by the battery is explosive.
• To reduce the danger of e xplosion, never connect or disconnect
c harger cable s while the charger i s operating.
& WARNING (c on tinued )
• Fast charging a battery is dangerous and should only be
attempted by a competent technician with the proper equipment .
• Battery acid that may spill during charging should be washed
off with a solut ion of warm water and baking soda to neutralize
the acid.
0 Note
• M ake s ure that the gas venting hose is always connected to the
or ig inal open ing o n the ba tte ry s ide . Othe rw ise gasses or battery aci d
co uld leak out .
• N ever use a fast cha rger as a booster to start t he eng ine . Th is will
ser iously damage sensitive electronic components, such as control
units, relays, radio , etc. , as well as the batte ry c harge r.
• Th e vehicle may be optionally equ ipped wi th a gel ba tte ry, which
can only be charged at a constant current-limited voltage . To prevent
damage to the batte ry and the electronics system, a gel battery that
is connected must under no c ircums tances be charged with a quic k
charger.
[I) Tips
• The veh icle battery must not be c harged with a standard sma ll
c harger that plugs in to the outlet.
• Only charge the battery th rough the connections in the engine
c omp artment .•
Battery replacement
T he new battery must have the s am e specific ations as the
old one.
Inte lligent energy management in yo ur vehicle is responsib le for
distr ib uting the elect rical e nergy througho ut your vehicle

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=:> page 194. The intelligent energy management system will keep
the eng ine battery charged bette r then vehicles withou t this system .
To make sure the additional electrical energy is available o nce again
after you have changed the battery, we recommend t hat you install
batteries of the same type and manufacture only (the same as those
installed at the time your vehicle was delivered). Specif ications are
listed on the batte ry ho using. Your authorized dealer must code the
battery in the energy management system to enable you to use the
ene rgy management functions correct ly after replacing the battery.
If it is not poss ible to use a battery of this type, the new battery must
have the same capacity, voltage (12 volts), amperage, construct ion
and plug sealing.
We recommend that you use maintenance-free or
c y cle-re sis ­
tant /le ak -proof
batteries that conform to the standards TL 82S 06
(from December 1997) and
VW 7 50 73 (from August 2001).
When installing the battery, make sure the ignition and all electrical
consumers are turned off.
0 Note
• Make s ure that the gas venting hose is always connected to the
original opening on the battery side . Otherwise gasses or battery acid
co uld leak out.
• Battery mounts and clamps must a lways be secured correctly.
• Read and follow the warn ings under=:>
page 239, "Work ing on
the batte ry" before performing any work on the battery .
c£> For the sake of the environment
Because of the problem of proper disposal of a battery, we recom­
mend your authorized Audi dealer change the battery for you.
Batteries contain sulfuric acid and lead and must always be d isposed
of prope rly in compliance with all env ironmenta l regulatio ns.
Disposing of vehicle batteries improperly is very dangerous to the
environment . M ake sure that the removed battery cannot overbal­
ance, otherw ise sulfur ic acid might escape! •
Vehicle OP-eration
Windshield washer container
Using plain water is not adequate for filling the wind­
shield washer system.
Fig . 1 70 En gine
co mpa rt ment : win d­
s hi eld w as her f luid
con taine r
The windshield wash er fluid container is loca ted on the right
side of the engine compartment:::::;, fig. 170 . The washer flui d
co nta iner is mar ked with the symbol~ is on its cap.
- Before you ch eck anythin g in t he e ngine compartment,
always
read and heed all WARNINGS=> & in "Working in
the e ng ine compartment" on
page 226.
- Lift t he fi ller cap tongue to add washer fluid. You can fill
th e container to the top.
- Press the cap back onto the filler neck after filling the
container.
You can find the reservoir capacity in the table in=> page 296.
Clean water should be used when fi lling up. If possible, use soft water
to prevent scaling on the washer jets . Always add a glass cleaner solu-
tion (with frost protection in the winter).
tJ,,,
Vehicle care Do-it-yourselt service iTechnical data

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Groove
means the spa ce between two ad jacen t tread ribs .
Load rating (code)
mea ns the max imu m load th at a tir e is ra te d to c arry fo r a give n infla­
tion pressure. You may not find this information on all t ires beca use
i t is no t required by law .
Maximum load rat ing
me ans the load r ati ng for a t ire at th e maxi mum p ermis sib le in flation
pressure for that tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weig ht
(c) Vehicle ca pacity we ight, and
(d) Pro duct ion op tions weigh t
Maximum (permissible) inflation pressure
means the m aximu m cold infla tio n pr essur e to whi ch a t ire may be
inflated . Also called "maximum inflat ion press ure."
Normal occupant weight
means 150 lbs. (68 k ilog rams) times t he num ber of occupants seate d
in t he vehi cle up to the total sea ting cap aci ty of yo ur vehicl e.
Occupant distribution
means d is tribut ion of occ upan ts i n a vehicle.
Outer diameter
means the ove rall d iameter of an inflated new tire.
Overall width
means the linear distance betwee n the exter iors of the s idewalls of
a n in flated tire, in cludi ng eleva tions due to la beling, dec ora tions, o r
protective bands or ribs.
Safety first
Ply
means a layer o f rubbe r-coate d para llel co rds.
Production options we ight
me ans the co m bine d we ight of tho se in stalled regu lar pr oduction
options weighi ng over 5 lbs. (2.3 kg) in excess of t hose standard
i t ems w hic h they replace, not previously considere d in c urb we igh t o r
accessory weight, includ ing heavy duty brakes , ride levelers, roof
rack, heavy duty battery, and s pecial tr im.
Radial ply tire
me ans a pneuma tic tir e in wh ich the pl y cords that extend to t he
beads are laid at substantially 90 degrees to the centerline of the
t rea d.
Recommended inflation pressure
see => page 246 , "C old tire in fla tion pr essu re".
Reinforced tire
mea ns a t ire designe d to ope rate at hig her loads an d at higher infla­
tion pressures than the co rresponding standard ti re. Reinforced t ires
my be iden tifi ed as " XL", "xl", "E XTRA LOAD", o r "R F" on the s idew all.
Rim
mea ns a metal suppo rt fo r a tire or a tire and tube assemb ly up on
wh ic h the t ire beads are seated.
Rim diameter
means nom inal d iameter of the bead seat . If you change yo ur whee l
si ze, yo u w ill have to purchase new tires to ma tc h the new r im diam­
eter .
Rim size designation
means r im diamete r and width.
Rim width
mea ns nom inal dis tance be twee n rim flanges.
Vehicle care Technical data

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(I) Tips
• Whenever replacing a fuse, always consult the sticker on the
i ns ide of the fuse panel cover. It contains the most up-to-date infor ­
mation regarding the fuse arrangement . If in doubt , ask your autho ­
rized Audi Service advisor.
• Some of the equipment items listed are optiona l or only available
on certain model configurations. •
Fuse location, left side of engine
compartment
Fig. 196 Engine
compart ment: fuse
assignment
Please check your car's fuse layout, there are two different layouts.
Check the fuse layout with the fuse panel cover removed~
page 281,
"Fuse cover in engine compartment ".
Some of the equipment items listed are optional or only available on
certain model configurations .
Please note that the preceding table was accurate at the time of
printing and is subject to change . In the event of discrepancies, the
label on the inside of the cover always takes precedence .
No. Equipment
Fl Terminal 30
F2 Engine components
F3 Batteryvoltage
F4 ESP valves, Anti-lock brake system (ABS) valves
FS Transmission control module
F6 Steering wheel electronics
FlO Engine control module, main relay
Fl2 Control module for CAN data transfer (gateway)
Fl3
FlS
Fl6 Engine
control module
Ignition coils, engine components (diesel engine)
Preheating control module/engine component,
tank diagnosis, oxygen sensor
Body control module (right)
F l7 Ho rn
Fl8 Audio amplifier
Fl9 Front
windshield wiper system
F20 Water pump, volume regulator valve
F21 Oxygen sensor, vacuum pump
F22 Clutch pedal switch, brake light switch F23 engine components, water pump
F24 Engine components, water pump
F25 Pump (ESP/ABS), ABS va
lve
F26 Body control module (left)
Amps
40
20
s
20/30 15
5
5/10
5
15/25/30
20
5/10 30 15
30
30
10/20
10/15
5
5/10/15 10
40 30

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Emergency situations
General
This chapter is intended for trained emergency crew s and working
pe rsonnel who have the necessary tool s and equipment to perform
the se operation s. •
Starting by pushing or towing
0 Note
Veh icles with an automatic transmission cannot be started by
pushing or towing .•
Starting with jumper cables
J umper c able : Note the manufacturer 's information .
If the battery is discha rged, another ve hicle can p rovide sta rting
assistance. For this yo u require a jumper cab le. Bot h batter ies m ust
h ave the s ame vo lt a ge (V) and a sim ila r cap acity (Ah).
Jumper cables Use
only jumpe r cables o f sufficiently la rge cross section to safely
carry the starter current. Refer to the man ufact urer's spec ificat ions.
Use only j umpe r ca bles with
isola ted t ermin al cl am ps and pro p erl y
marked for distinct ion:
plu s(+) cable in most cases co lored red
minus( ·) cable i n most cases colo red black .
T he w ire cross sect ion must be at least 0.038 in
2 (25 mm2
) for gaso ­
line engines and a t least 0. 054 in
2 (3 5 mm2
) for diese l engines.
& WARNING
Batterie s contain el ectricity, acid, and gas . Any of the se can cause
very serious or fatal injury. Follow the inst ructions below for safe
handling of your vehicle 's battery.
• Always shield your eyes and avoid leaning over the battery
whenev er po ssible .
• A discharged battery can alre ady freeze at temperatures just
below 32 °F (0 °C) . Never attempt to provide starting assistance
on a frozen or thawed out battery- Danger of explosion and chem­
ical burns! Replace a battery if it has been frozen.
• Do not allow battery acid to contact eyes or skin. Flush any
contacted area with water immediately .
• Improper u se of a booste r battery to start a vehicle m ay cause
an explosion .
• Vehicle batteries generate explosive gases . Keep sparks, flame
and lighted cigarettes away from batteries .
• Do not try to jump start any vehicle with a low acid level in the
battery .
• The voltage of the booster battery mu st also have a 12 -Volt
rating. The capacity (Ah) of the booster battery should not be
lower than that of the discharged battery . Use of batteries of
different voltage or substantially different "Ah" rating may cause
an explosion and personal injury.
• Never charge a frozen battery . Gas t rapped in the ice may cause
an explosion .
• Never charge or use a b attery that has been frozen. The battery
case may have be weakened.
• Use of batteries of different voltage or substantially different
capacity (Ah) rating may cause an explosion and injury. The
capacity (Ah) of the booster battery should not be lower than that
of the di scharged battery .
~

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& WARNING (co ntinued )
• Before you che ck anything in the engine compartment , alway s
r e ad and heed all WARNINGS =>
page 218, "Engi ne compart­
ment ".
0 Note
• App lying a higher vo ltage booster battery will cause expens ive
damage to sens itive e lec tro nic components, such as contro l units,
re lays, rad io, etc.
• Th ere must be no electrical contact between the veh icles as othe r­
wise current could a lready sta rt to flow as soon as the posit ive(+)
term inals are con nected.
• Improperly connecte d jumper cables can cause substantial
damage to the e lectr ica l system of the vehicle .
[I) Tips
• The discharged batte ry mu st be properly co nne cted to the
vehicle's elect rical system. •
General information of starting
assistance
Please observe that the procedure descr ibed below for connect ing
jumpe r cab les is intended to p rovide a ju mp s tart for your ve hicl e.
Make sure t hat the co nnected clamps have suff ic ient
metal contact.
Sta rt assistance differs for vehicles w ith a 4-cylinde r engine:
=> page 288, "Use of jumper cables"
Safety first
& WARNING
Improper handling of the jumper cables can lead to an explosion
of the battery and severe injurie s. To reduce the ri sk of injury, note
the following:
• The section s of the terminal clamps that are not insul ated
must not touch each other. In addition, the cable clamped to the
battery' s po sitive terminal must not come in contact with electri­
cally connected parts of the veh icle -danger of short circu it!
• Route the jumper cable so that it cannot catch in any rotating
parts in the engine compartment .
• Do not bend over the batteries -danger of chemical burns!
• The battery cell locking screws must be tightened securely.
• Keep ignition source s (open flame , burning cigarettes, etc.)
away from the batteries -danger of explosion!
• Do not clamp the minus cable to parts of the fuel system or the
brake lines.
0 Note
If you prov ide sta rt assistance for others with your vehi cle, you shou ld
not clamp the minus cable( -) to the negative te rm inal of the
discharged batte ry =>
page 288, fig. 19 7 © but to a solid metal part
sc rewed firm ly to the eng ine b lock, or to the e ng ine block itse lf . In
case of an inadequately venti lated battery o f the veh icle receiving
powe r, the re is a dange r of explosi on du e to detonat ing gas! •
Vehicle care Do-it-yourself service Technical data