2012 AUDI A3 alarm

36 Openin g and clo sing
in the cover. Correct po larity is shown on the
cover .
.. Place the cover with the new battery on the
key base and press both parts together.
@ For the sa ke of the environment
Dispose of dead batteries properly so as
not to po llute the environment.
(D Tips
The replacement battery must be the
same specification as the original.
Electronic immobilizer
The immobilizer helps to prevent unauthor­
ized use of your vehicle .
A computer chip inside your key automat ica lly
deactivates the e lectronic immobilizer when
you insert the key in the ignition lock . When
you remove the key from the ignition lock, the e lectronic immobilizer is a utomatica lly acti­
vated once again.
@ Tips
- The vehicle cannot be started if an unau­
thorized key is used. The vehicle may not
start if another radio device such as a key
for another vehicle or transponder is lo­
cated on the key ring.
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions
¢ page 262.
Power locking system
General description
The power Locking system Locks or unlocks all
doors and the rear lid simultaneously.
The power lock ing system in your veh icle in­
corporates the fo llow ing funct ions:
- Central locking function
- Remote control feature¢
page 35.
- Anti-theft alarm system ¢ page 42.
All the doo rs and the rea r lid a re locked by the
central locking system when you lock the vehi­
cle .
T he unlo ck ing and locking mode * can be
changed in the drive r information system
¢page 27.
Unlocking the vehicle
You can unlock t he vehicle from outside either
by us ing the remote contro l
or by inserting
and tu rning the key in the driver's door lock.
When you
unlock your vehicle:
- The ant i-theft a larm system is deactivated
b riefly .
- The vehicle i nte rio r lights i llum inate fo r ap­
proxima tely 30 seconds .
- All turn s ignal lights w ill flash tw ice when
the ca r is u nlocked.
- After unlocking the vehicle, you have 30 sec­
onds to open a door or the rear lid. After 30
seconds, the vehicle automat ically locks and
the anti -t h eft alarm system act ivates ag ain.
The rear lid can be locked o r unlocked either
by us ing the remote cont ro l
or by inserting
and tu rning the key in the drive r's door lock.
Unlocking the vehicle wi th the remo te contro l
c;:::::::5 will only unlock the rear lid, to open i t , the
lid handle needs to be pressed.
Locking the vehicle
You can lock the veh icle from outs ide either by
u sing the remote con trol
or by inse rting and
tu rning the key in the drive rs 's door lock .
When you
lock the veh icle:
- All doors a nd the rear lid are loc ked.
- All turn s ignal lights will flash once when
the car is locked.
- The ant i- theft a larm system is activated .
The horn of the anti-theft alarm system w ill
sound and the ant i-theft a la rm system read­
iness l ight , loca ted in the center of the in­
s trumen t panel be low the w indshield on the
r ight side of the ai r vent , will start to blink.
- The vehi cle i nte rior ligh ts turn
off. .,.

38 Openin g and clo sing
The remote controls a llows you to:
- lock or unlock the veh icle
- selectively unlock the rear lid.
The turn signals will flash briefly whenever
you lock or unlock the vehicle. Also, the interi­
or light will come on or go off whenever you
open or close the dr iver's door .
The transmitter and battery are located in the
head of the remote control. The receiver is lo­
cated inside the vehicle . The maximum effec ­
tive range depends on seve ral things . Remem­
be r, if the battery is weak, the effective range
dec reases.
The remote -control key conta ins a fold -out
key that you can use to man ually lock or un­
lock the v ehicle and to sta rt the e ng in e.
If you need to replace the remote contro l, or if
you need to have it repaired, you must see
your author ized Audi dealer . Only then can
you use the key again .
_& WARNING
Read and follow all WAR NIN GS c> &. in
G eneral descrip tion on page 37.
@ Tips
- The remote cont rol key is automat ical ly
deact ivated when th e ignition is sw itch­
ed on.
-
- The op eration of the remote cont ro l key
c a n be tempo rarily disrupted by in terfer­
ence from transmitters in t he vicin ity o f
th e veh icle work ing in t he same frequen­
cy r ange (e .g . a ce ll phone, radio equip ­
ment).
- In order to make sure the locking func­
tion is workin g, you shou ld always keep
you r eye on the vehicle to make sure it is
p roper ly loc ked.
- Do not use the remote control if you are
i nside t he car, ot herwise you may unin­
tentiona lly lock t he ve hicle, and then you
would set off the anti-theft alarm when
you try open a door . In case this happens
anyhow, push the unlock button@ . - U
se the panic function on ly if yo u are in
an emergency situation .
Resetting the remote control
The remote control must be rese t if the vehi ­
cle does not unlock.
• Press t he u nlock button@ on the remote
cont ro l.
.. Man ually un lock the driver's door lock with
the mechanica l key within 30 seconds .
.. Press either the lock-
tD or the unlock @ but­
ton to complete the reset seq uence.
Doors, power Locks
Operating the locks with the fold-out
key
To lock and unlock the vehicle from the out­
side, turn the key in the lo ck of the driver 's
door .
Fig. 30 Key turns for openi ng and closing.
To unlock all door s and the rear lid
.. Turn the key to position @ c> fig. 30 to un-
lock the vehicle
To lock the vehicle
,.. Close a ll win dows and doors pro perly.
.. Turn the key in the lock of the d river's door
to the loc k pos it ion
@ c> A in General de­
scription on page 3
7.
When you unlock yo ur vehicle:
- The ant i-theft alarm system is dea ctivated.
- The vehicle i nterior lights illum inate fo r ap-
proximately 30 seconds .
When you
lock the vehicle:

- All doors and the rear lid are locked.
- The anti- theft alarm system is act ivated.
- The veh icle inter ior lights turn off.
_& WARNING
Alw ays read and heed WARNING ~ &. in
General description on page 37.
Locking and unlocking the vehicle from
inside
The vehicle con be locked or unlocked from
the inside using the power locking switches
located in the driver's and the front passeng­
er's door.
F ig. 31 D rive r's doo r: powe r locki ng sw itc h
In addition to the central locking switches in
the doors , there is a locking switch on the rear
center console for the rea r-seat passengers
9 page40.
How t o lo ck all doors and the rea r lid
simultaneously
• Press lower part of the power locking switch
@ 9fig. 319&_ .
How to unlock all doors an d the re a r lid
simultaneousl y
• Press the upper part of the switch@ .
How to unlock / open each front door
s e paratel y using the doo r handle
• Pull the door handle once to release the
lock and s imultaneously open the door .
How to unlock/ open each rear doo r
s eparately using the doo r handl e
• Pull the door handle once to release the
lock .
Openin g an d clos ing 39
• Pull the handle twice to open the door.
If you lock the vehicle using the power lo cking
switch @, please note the following:
- You cannot open the doors or the rear lid
from the
outside (increased secu rity, for ex­
ample when you are stopped at a red light).
- The d iode in the power locking switch illumi-
nate when all the doors and the rear lid are
closed and locked.
- You can un lock and open the doors individu­
ally from the ins ide by pu lling once on the
door handle for the front doo rs and twice
for the rear doors.
- Front doors: you can unlock and open the doors from the inside by pull ing on the door
handle.
- Rear doors: pull the doo r handle
once to re­
lease the lock . Pu ll the handle
again to open
the door.
- If the driver's door is opened (afte r you have
locked the vehicle from the ins ide using the
power locking switch), the door will rema in
unlocked to prevent you from locking your­
self out of your vehicle. After you close the
door, you have to lock the driver's door
again .
- If you have a crash and the airbag is activat·
ed, the doors automatically unlock .
A WARNING
- If you use the power locking switch w ith
the doors closed, remember that all the
vehicle doors will lock.
- Locking doors from the inside can help
prevent inadvertent door opening during
a n accident and can a lso prevent unwant­
ed entry from the outside. Locked doors
can, however, delay assis tance to vehicle
occ upants and hold up rescue efforts
from the outside in an accident or other emergency.
(D Tips
If the vehicle has been locked manually
with the key or with the remote contro l,
the central locking switch is inoperative.

42 Opening and clo sing
Child safety lock
The child saf ety lock t prev ents th e re ar
doors from being opened from the inside .
Fig. 38 Rear doors : child safety lock
The rear doors are equipped wi th a ch ild safe­
ty lock.
It is operated w ith the vehicle key. The
child safety lock is only visible when the door
is open.
• To
switch on the child safe ty lo ck , tu rn the
i gnition key in the direct ion of the arrow .
• To
switch off the child safety loc k, t urn the
ignition key in the opposite direction of the
arrow.
The c hild safety lock prevents the doors from
being opened from the inside when you have
small children sitt ing in the rear.
Anti-theft alarm system
The anti -theft alarm triggers an alarm if any­
one attempts to break into the vehicle .
Fig. 39 Diode pos it ion in th e in st ru men t pane l
The anti-theft a larm system triggers an audi­
ble alarm and tu rns o n the emergency flasher
if a n unauthori zed interference w ith the vehi­
cle is sensed by the system.
How is the anti -theft alarm system
switched on?
T he anti -theft alarm system is switched on
when you lock the driver's door manua lly us­
ing t he fo ld-out key, or when you use the re­
mote control. The system is activated approx i­
mately 30 seconds after the vehicle is locked .
The ind icator light¢
fig. 39 starts flash ing
rapid ly for 30 s econds and then blinks slowly.
How is the anti-theft alarm sy stem
switched off?
T he anti-theft alarm system is switched off
when you use the remote cont ro l to unlock
yo ur vehicle.
If you do not open a doo r wi thin
30 se co nds after yo u have u nlocked wi th the
remote control, t he vehicle will loc k it se lf
again automatically .
If you lock just t he d river's door using your
k ey, the fron t passenger's door and the re ar
li d remai n locked.
When will the anti th eft alarm system be
triggered?
When the vehicle is lo cked, t he alar m sys tem
monitors and pro te cts the fo llowi ng parts of
the ve hicle :
- eng ine compartmen t
- luggage compartmen t
- doors
- ignition
When the system is activated, the alarm will be triggered if one of t he doors, t he engine
hood or the rear lid are opened, or if the igni­
t ion is turned on or the rad io removed .
The anti-theft alarm system wi ll also go off
whe n the battery is disconnected.
You can also trigge r the alarm by pressing the
P ANIC button on you r remo te-control key .
T his wi ll ale rt ot her people in case of emer­
gency . Press the
PANIC button again to turn
off the alarm.

How is the anti-theft alarm switched off
when triggered?
The alarm system is switched off when you
un lock the vehicle using the remote-control
key or when the ignition is switched on. The
alarm will also switch itself off when it comes
to the end of its cycle .
Emergency flasher
The emergency flasher will blink briefly when
the doors, engine hood and rear lid are prop­
erly closed .
If the emergency flashers do not blink, check
the doors, engine hood and rear lid to make
sure they are properly closed. If you close a
door, the hood or the rear lid with the anti­
theft alarm switched on, the emergency flash­
ers will blink only after you have closed the
door or lid .
(D Tips
For the anti-theft alarm system to func­
tion properly, make sure all vehicle doors
and windows are closed before leaving the
veh icle.
Power windows
Controls
Fig. 40 Dr iver 's door: powe r w ind ow sw itches
The switches are located in the driver's door.
The front passenger's door has a own power
window switch of its own.
To open/close If the respective switch is push­
ed or pulled, the window will, respectively.
Opening and closing 43
Switches for front door windows
@ operates the window in the driver's door.
® operates the window in the front passeng -
er 's door.
Switches for rear windows
© operates the left rear window.
@ operates the right rear window.
Safety switch
® Safety switch for rear window operation .
A WARNING
-Do not leave chi ldren unattended in the
veh icle, especially with access to vehicle
keys. Unsupervised use of the keys can
result in starting of the engine and use
of vehicle systems such as power win­
dows, etc. wh ich could result in serious
mJury.
- Remember -you can still open or close
the power windows for about ten mi­ nutes after the ign ition is switched off.
On ly when either of the front doors are
opened are the power windows switched
off .
- Be careful when clos ing the windows .
Check to see that no one is in the way, or
serious injury could result!
-Always remove the ignition key whenever
you leave your vehicle .
- If you lock your vehicle from the outside,
no one, especially children, should re­
main in the vehicle.
- Do not stick anything on the windows or
the windshield that may interfere with
the driver's field of vision.
Switches in the driver's door
The driver can operate all windows .
In addition to the switches in the driver's
door, there is a separate switch in each door
for the power window in that door~
page 43,
fig. 40.
If the respective switch is pushed or
pulled, the window will open or close. The
Ill>

206 Checking and filling
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance .
Fig. 163 Engine compartme nt: brake flu id reservo ir
Before you check anything i n the engine com ­
partment,
a lwa ys rea d and h eed a ll WA RN·
ING S c:> & in Working in the engine compart ­
ment on page
194.
~ Read the brake fluid level from the bra ke
fluid reservoir. The brake fluid Level must be
between the "MIN" and "MAX" markings
9fig. 163 .
The brake f lu id rese rvoir is located at the rear
partition of the engine compartment on the
L eft side
¢page 196.
The fluid level may drop slightly after some
time due to the automatic adjustment of the b rake pads . This is not cause for alarm .
I f the b rake fluid Level falls
considerably be­
low the "MIN" mark, the brake wa rning/ind i­
cator Light (U.S. models:
1111 , Canadian
models:
llllt will come on c:> page 15 . Do not
continue to operate the vehicle . The complete
brake system sho uld be thoroughly checked
by an authorized Audi dealer or other quali­
fied facility and the cause corrected. If the
brake fluid level is too low, the brake warn ing/
indicator Light w ill illuminate . Contact an au­
thor ized Audi dealer
imm ediatel y.
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician .
Brake fluid absorbs moisture from the air. If
the water content in the brake fluid is too high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also decrease conside rably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
eve ry two y ears. Always use new brake flu id
which conforms to Federal Motor Veh icle
Standard "F MVSS 116 DOT 4".
The brake fluid reservoir can be diff icult to
reach, therefore, we recommend that you
have the b rake fluid changed by your author­
ized
Audi dealer . Your dealer has the correct
tools, the right brake fl uid and the know -how
to do this for you.
A WARNING
- Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake flu id. Observe these pre­
cautions:
- Use only brake f luid that meets SA E
specifica tion
J 1 7 03 and conforms to
Federa l Moto r Ve hicl e Standard 1 16.
Always check with yo ur authorized Aud i
dealer to make sure yo u are using the
correct brake fluid. The correct type of brake f lu id is also ind icated on the
brake flu id reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong. This can seriously affect the effi­
c iency of the brakes as well as your
safety. This cou ld resu lt in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle .

@ For the sake of the environment
Because of the problem of proper disposal
of brake fluid as we ll as the special tools
req uired and the necessary expert ise, we
recommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
All work on the battery requires technical
knowledge!
F ig . 1 64 Eng ine co mpa rtment: Batte ry w it h cover*
The battery is located in the engine compart­
ment
c::> fig. 164 and is near ly m ain te nance­
fre e.
The condition of the battery is checked in the
framework of the inspection.
Disconnecting the battery
The batte ry should not be disconnected. Some
ve hicl e functions such as power windows are
unavailable if the battery termina ls are dis­
connected. These funct ions have to be re­
l earned after the battery term inals are con­
nected aga in. To prevent this, the battery
should only be disconnected from the vehicle
electrical system if absolutely necessary .
Function
Power window
one-touch up/
down function
Master key with
remote control
Reprogramming
c::, page 45, Reactivating
the system after battery
disconnection
Synchronization
~page 38
Checkin g and fillin g 207
Reprogramming
Digita l clock c::, page 11
ESP indicator light The indicator ligh t goes
out after driving a few
meters
Vehicl es not driven for long periods and
sho rt -d is tance op eration
If you do no t drive your vehicle for several
days or weeks, electrical consumers are grad ­
u ally scaled back or switched off . This reduces
energy use and ensures the vehicle will be
able to start after long periods of time
c::, page 167. Some convenience functions
such as opening w it h the remote control key
may not be available. These conve nience func­
tions wi ll be available again once you switch
the ignit io n on and sta rt the engine. Even
whe n consume rs a re switched off, the battery
will become deeply discharged by stand -by
power consumers if the vehicle is not driven
for several months . Deep discharging results
in a chemical reaction that destroys the inside
of the battery. The battery must be charged
every month to prevent th is
c::, page 209. Do
not disconnect the battery or the anti-t heft
alarm system* will not work .
Winter operation
Cold weather places higher demands on the
battery. This results in reduced starting abili­
ty. Have the battery checked and recharged if
necessary befo re the cold weather begins.
Avoid unnecessary power consumpt ion, par­
ticularly in city traffic or when traveling only
short distances . Let your authorized Audi
dealer check the capacity of the vehicle bat­
tery before winter sets in
c::, page 209 . A well
c harged bat tery will not o nly prevent s tarti ng
problems when the weather is cold, but will
also last longer .
(D Note
-All wo rk on the batte ry requ ires techn i­
cal know le d ge. P lease con ta ct an Audi
dealership or another authorized fa cility
lill>

-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 sys­
tem, disconnect the negative ground ca­
ble.
- Before performing any work on the elec­
trical system, switch off the engine and
ignition 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
enough to switch 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 negative cable and then
the positive cable.
- Before reconnecting the battery, make
sure all electrical consumers are switch­
ed off. Reconnect the positive cable first
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 dis­
charged battery can freeze over at
32 °F
(0 oc).
-Mak e 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 Proposition 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
tive problems. Wash hands after han­ dling.
Checking and filling 209
(D 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", oth­
erwise it will be damaged and will then
have to be replaced
~ page 209.
Charging of battery
All work on the battery requires technical knowledge!
Fig. 165 E ngine compart ment: conne ctors for a charg­
er and jump start cables
A charged battery ensures good starting per­
formance . A discharged battery can
freeze at
temperatures of only
O 0C. 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 be­
low~ .&, and ~.&, in
Working on the bat­
tery on page 208.
... Switch off the ignition and all electrical con­
sumers .
.,. Make sure the area is well ventilated when
you charge the battery.
.,. Connect charger cables.
Charger cables
must always be connected POSITIVE
G to ..,.