battery AUDI S4 2013 User Guide

particu lar close to the h inges and the up­
per and lower edges -fingers or hands
can be pinched.
- To help prevent poisonous exhaust gas
from being drawn into the vehicle, al­
ways keep the rear lid closed while driv­
ing. Never transport objects larger than
those which fit completely into the lug­
gage area, because then the rear lid can­
not be fu lly closed.
- Never leave your vehicle unattended es­ pecially with the rear lid left open. A
child could c rawl into the ca r th rough the
luggage compa rtment and pull the lid
shut, becoming trapped and unab le to
get out. To reduce the risk of persona l in­
jury, never let children p lay in or around
your vehicle. Always keep the rear lid as
well as the vehicle doors closed when not in use.
- If there is a luggage rack or bicycle rack
mounted on the rear lid, it may not be
able to open completely or an opened
rear lid may close by itself because of the
added weight . So the open rea r lid must
be supported or the weight must be re­
moved from the luggage rack first.
(D Tips
- When the vehicle is locked, the rear lid
can be unlocked separately by pressing
the button
c:s on the master key. When
the rea r lid is closed aga in, it locks a uto ­
mati cally .
- The following applies to veh icles equip ­
ped with the conven ience key * feature: if
the remote control key is left in the lug­
gage compartment, luggage compart­
ment will automatica lly unlock itse lf af­
ter you lock the vehicle. This prevents
you from unintentionally locking your
key in the luggage compartment .
-If the ve hicle battery charge drops be­
low a certa in leve l, you can still open or
close the rear lid manually, however , you
will need to apply more force to close it .
Openin g an d clos ing 41
Sedan: Rear lid emergency release
Applies to veh icles: w it h fixed rear seat backrest
Fig. 3 1 Rear bench seat : emergency re le ase c able
On vehicles with fixed seat backrest*, the rear
lid can be opened from the rear bench se at us­
ing the emergency release.
.,. Carefully pull the left side of the rear bench
seat out of its retainer until you can reach
the release cable
¢fig. 31.
.,. Remove the adhesive tape @.
.,. Pull on the loop @ until the rear lid releas­
es .
.,. Tape the rele ase cable ba ck in place and
press the bench seat back into its reta iner .
A WARNING
Afte r opening the rear lid using the emer­
gency re lease in vehicles with a fixed rear
seat backrest, make sure the bracket under
the rear bench seat
¢fig. 31 locks secure ly
into the mount ing eyelet again.
allroad: Rear lid emergency release
F ig . 32 Rea r lid op ening: acces s to t he e merg ency re ­
lease
The rear lid can be released in an emergency
from inside the luggage compartment .
IIJ,,

44 Opening and clo sing
- Always read and heed WARNING ¢ &. in
General description on page 32.
Correcting window regulator
malfunction
After disconnecting the vehicle battery, the
one-touch up and down feature must be acti­
vated again .
.. Pull and hold the power w indow switch un­
til the window is completely closed.
.. Release the switch and pull the switch again
for one second .
Sunroof
Operation sliding/tilting sunroof
Applies to vehicles: with sliding/tilting sunroof
Fig. 37 Section of headline r: knob fo r sunroof
Tilting
Requ irement: the roof switch must be in the
@ pos it io n ¢
fig . 37.
.. To tilt it, briefly press the switch ¢ fig. 3 7.
.. To close it, briefly pull the switch¢.&, .
.. To set an inte rmediate pos ition, press/pull
t h e switc h until the roof reaches the des ired
pos it ion.
Opening/sliding (version 1 )
.. To move the sunroof to the position for re­
duced wind noise, turn the swi tc h to posi­
t ion
CD unt il resistance can be felt .
.. To open the s unroof complete ly, tu rn and
hold the switch against the res istance in po­
s it ion @ .
.. To close the sunroof comple tely, turn the
switch to @posi tion
¢ .&, . ..
To se lect a setting in between, turn the
switch to the desired position .
Opening/sliding (version 2)
.. To s lide the roof a ll the way open, turn the
sw itch to the
CD posi tion.
.. To close the sun roof completely, turn the
switch to @ position ¢ .&, .
.. To se lect a setting in between, turn the
sw itch to the desired position .
T he sunshade can be opene d and closed man­
u ally in any posit io n. When opening the sun­
roof, the sunshade is automatically opened.
After the igni tion is sw itche d off, you can s till
o pera te the sunroof for about 1 0 minutes . As
soon as the driver's or passenger 's doo r is
opened, the switch is inoperative .
_8 WARNING ~ -
Pay careful attention when closing the
su nroof -otherw ise serio us i njury co uld re­
sult! Fo r th is reason, always remove the ig­
ni tio n key when leaving the vehicle.
(D Note
Always close your sun roof w hen leav ing
your vehicle. Sudde n ra in ca n cause dam­
age to t he interior equipment of your ve hi­
cle, part icu larly the ele ctronic equ ipment .
@ Tips
-Informat ion regarding convenience
opening/closing
r:> page 43 .
Operation panorama sunroof
Applies to vehicles: with panorama sunroof
Fig. 38 Sect ion fro m headli ner : kn ob for s unroof.

64 Seats and storage
12-volt socket
Applies to vehicles: wit h 12-volt socket
Electrical accessories can be connected to the
12-volt socket.
F ig . 6 7 allroad Luggage compartment s ide trim: sock·
et
Fig . 68 Center conso le: socket
.,. Open the socket cover~ fig. 68.
.,. Insert the plug of the e lectrica l device into
the socket.
The 12-volt socket can be used for elec trical
accessories. The power input must not exceed
120 watts.
There is an addi tional 12-vo lt socket in the
cente r console .
Before you purchase any accessories, always
r ead and fo llow the information in
~ page 282, Additional accessories and parts
replacement .
.&_ WARNING
The socket and the electrica l accessories
connected to it operate only when the igni­
tion is sw itched on. Incorrect usage can
lead to serious injuries or burns. For this
reason, children should never be left unat-
-
tended in the veh icle because this increas­
es the risk of in jury.
(D Note
-Never connect e quipment that generates
electrical current, such as a solar pane l
or battery charger, to the 12-vo lt socket.
Th is could damage the vehicle's electri­
cal system.
- To avoid damaging the socket, only use
plugs t hat fit properly.
(D Tips
When the engine is off and accessories are
still pl ugged in and are on, the vehicle bat­
tery can still be drained.
Storage
General overview
.&_ WARNING
-
- Always remove objects from the instru-
ment panel. Any items not put away
could slide around ins ide the veh icle
while driving or when accele rat ing or
when applying the brakes or when dr iv­
i n g arou nd a corne r.
- When you are dr iving make su re that
anyth ing you may have pla ced in the cen­
ter conso le or other sto rage locations
can not fall ou t in to t he footwe lls. In c ase
of sudden bra king you would not be able
to brake, dep ress the clutch o r acce ler ­
ate.
- Any pieces o f clothing that you have
hung up m ust not interfere with the driv­
er 's view. The coat hooks are des igned
only for lightweight cloth ing. Never hang
a ny clothing with hard, pointed or heavy
objects in the pockets on the coat hooks .
During s udden braking or in an accident -
especia lly if the a irbag is d eployed -
these objec ts co uld inj ure any passen­
gers inside the ve hicl e.
-

98 Transmission
dealer or qualified repair facility immediately
to have the ma lfunction corrected.
[O] ffl Transmi ssion malfunction: No r eve rs e
You can continue dri ving
S tron ic ® transmission: There is a system ma l­
function in the transmission . T he transmis­
sion is switc hing to emergency mode . This
mode on ly shifts into cer tain gears or w ill no
longe r shift at all. The engine may sta ll. You
cannot engage the reverse gear . Drive to your
author ized Audi dealer or qua lified repair fa ­
cility immediately to have the ma lf u nction
corrected.
[O] Tran smis sion malfunction : Stop veh icle
and shift to p ark.
Do not cont inue driving. Select the P se lector
leve r position and see yo ur authorized Audi
dea ler or qualified repair facility for assis­
tance.
(D Note
If the transmission switches to emergency
mode, you sho uld take the vehicle to an
author ized Audi dealersh ip as soon as pos­
sib le to have the cond ition corrected.
Selector lever emergency release
App lies to vehicles: with mult itronic/S tronic/tip tro nic
If the vehicle's power supply fails, the selec­
tor lever can be released in on emergency.
F ig . 10 8 Fro nt ce nter conso le: Re mov ing th e ash tray
ins ert F
ig. 10 9
Se lec tor leve r em ergency re lease
"' To access the emergency re lease mecha ­
n ism , remove the ashtray insert @ us ing the
release sw itch
@ q fig. 108 .
"' Loosen an d remove the cap in t he asht ray
mou nt.
"' Yo u now have access to a p in . Using a sc rew­
driver or simi la r object, press the pin down
and hold it in that position ¢
fig. 109 .
"' Now press the re lease button and move the
selector lever to the N posit ion.
T he selector lever can only be moved from the
P position i f the key is in the lock and the igni­
t ion is switched on. If the power supply fails
(for example, the battery is discharged) and
t h e ve hicle must be pushed or towed, move
the selecto r lever to th e N position fi rst using
the emergency re lease.

There are some important things you have to know to make sure that the effectiveness of
the system will not be impaired and that dis­
carded components do not cause injury or pol­
lute the environment.
A WARNING
Improper care, servicing and repair proce ­
dures can increase the risk of personal in­
jury and death by preventing an airbag from deploying when needed or deploying an airbag unexpectedly:
- Never cover, obstruct, or change the
steering wheel horn pad or airbag cover
or the instrument panel or modify them
in any way .
- Never attach any objects such as cu­
pholders or telephone mountings to the
surfaces covering the airbag units.
- For cleaning the horn pad or instrument
panel, use only a soft , dry cloth or one
moistened with plain water. Solvents or
cleaners could damage the airbag cover
or change the stiffness or strength of the
material so that the airbag cannot de­
ploy and protect properly.
- Never repair, adjust, or change any parts
of the airbag system .
- All work on the steering wheel, instru­
ment panel, front seats or electrical sys­
tem (including the installation of audio
equipment, cellular telephones and CB
radios, etc.) must be performed by a
qualified technician who has the training
and special equipment necessary.
- For any work on the airbag system, we
strongly recommend that you see your
authorized Audi dealer or qualified work­
shop.
- Never modify the front bumper or parts
of the vehicle body .
- Always make sure that the side airbag
can inflate without interference:
- Never install seat covers or replace­
ment upholstery over the front seat­
backs that have not been specifically
approved by Audi .
Airbag system 159
-Never use additional seat cushions that
cover the areas where the side airbags
inflate.
- Damage to the original seat covers or
to the seam in the area of the side air­
bag module must always be repaired
immediately by an authorized Audi
dealer .
- The airbag system can be activated only
once . After an airbag has inflated , it
must be replaced by an authorized Audi
dealer or qualified technician who has
the technical information, training and
special equipment necessary.
- The airbag system can be deployed only
once . After an airbag has been deployed,
it must be replaced with new replace­
ment parts designed and approved espe­
cially for your Audi model version. Re­ placement of complete airbag systems
or airbag components must be per­
formed by qualified workshops only.
Make sure that any airbag service action
is entered in your Audi Warranty
& Main­
tenance booklet under
AIRBAG REPLACE­
MENT RECORD.
- In accidents when an airbag is deployed,
the vehicle battery separates the alterna­
tor and the starter from the vehicle elec­
trical system for safety reasons with a
pyrotechnic circuit interrupter.
- Work on the pyrotechnic circuit inter­
rupter must only be performed by a
qualified dealer - risk of an accident!
- If the vehicle or the circuit interrupter
is scrapped, all applicable safety pre ­
cautions must be followed.
{® For the sake of the environment
Undeployed airbag modules and preten­
sioners might be classified as Perchlorate Material -special handling may apply, see
www.dtsc .ca.gov/hazardouswaste/per-
ch lorate. When the vehicle or parts of the
restraint system including airbag modules
safety belts with pretensioners are scrap­ ped, all applicable laws and regulations
must be observed. Your authorized Audi .,..
•
•

192 Intelligent technology
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting
the engine.
If a vehicle with a conventional energy system
is not driven for a long period of time, the bat­
tery is d ischarged by idling current consumers
(e.g. immobilizer). In ce rtain circumstances it
can result i n there bei ng insuff ic ient ene rgy
avai lab le to start the engine .
Intell igent energy management in your vehi­
cle hand les the d ist ribu tion of elect rical ener­
gy. Starting ab ility is mar ked ly imp roved and
the life of the battery is extended .
Basically , energy management consists of
batt ery diagno sis , idling curr ent manag e­
ment
a nd dynami c energy man agement .
Battery diagnosis
Battery d iagnosis continuously determ ines
the state of the battery . Sensors determ ine
battery vo ltage, battery current and battery
temperature . This dete rm ines the current
sta te of charge and the power of the ba ttery.
Idling current management
Idling current management reduces energy
consumption wh ile the vehicle is stand ing .
W ith the ignition switched off, it cont ro ls the
ene rgy s upply to the va rio us e lectrica l compo­
nents . Data from battery diagnosis is consid­
e red.
Depending on the battery's state of charge,
i nd ividua l consumers are grad ually t urned off
to p revent ex cess ive d isc harge of the ba ttery
and thus mainta in start ing capability.
Dynamic energy management
While the vehicle is be ing dr iven , dynamic en­
e rgy management dist ributes t he energy gen­
e rated accordi ng to the needs of the individu­
a l componen ts.
It reg ulates consump tion, so
that more electrical ene rgy is not being used than
is being generated and ensures an opti ­
mal state of charge for the battery.
(D Tips
- But even energy man ageme nt canno t
negate the limi ts of physics . Conside r
that the powe r and life of a battery are
limited .
- If start ing ability is threatened, the indi ­
cator light (•) appears ~
page 17.
What you should know
The highest priority is given to maintaining
starting capability .
The b attery is severe ly taxed in short -d istance
driv ing, in ci ty traff ic and during t he cold time
of yea r. Ab undant electrical energy is re­
quired, but on ly a little is generated . It is also
critical if the engine is not r unning and electri­
ca l components are turned on . In this in­
stance ene rgy is be ing consumed but none is
being generated .
It is in precisely these s ituations that you will
notice energy management active ly reg ulat­
ing the d istribution of energy.
Vehicle stand s for an e xtended period
If you do not drive your vehicle over a period
of several days or weeks, e lectrica l compo ­
nents are gradually cut back or sw itched off.
This reduces energy consumption and ma in­
ta ins start ing capability over a longer pe riod .
Some of the convenience functions may not
operate, such as the interior lights or the
power seat adjustme nt. The convenience
f unc tions wi ll be available again when yo u
swi tch on the igni tion and sta rt the eng ine .
With the engine turned off
If you listen to the radio, for examp le, w it h
the engine t urned off or use other MMI func­
t ions, t he battery is be ing discharged.
If starting capability is jeopardized due to en ­
ergy consump tion, the following warning ap-
pears in the MM I display: .,,.

Please start the engine soon or the system
will be turned off.
The warning ind icates that the system will be
turned off automa tically after 3 minutes. If
you wish to continue using the functions, you
have to start the engine .
With the engine running
Although electrical energy is generated when
the vehicle is be ing driven , the battery can be­
come discharged. This happens most ly when
litt le energy is being generated and a great
deal consumed and the battery's state of
charge is not optimal.
To br ing t he ene rgy balance back into equili­
brium, consumers which require especially
l arge amounts of energy are temporarily cut
back or switched off. Heating systems in par­
ticular requ ire a great deal of energy. If you
notice, for example, that the heated seats* or
the heated rear window are not heating, they
have been temporar ily cut back or switched
off. These systems will be ava ilable again as
soon as the energy ba lance has bee n restored.
You will also notice that engine idle speed has
been increased slightly . This is normal and not
a cause for concern. By increasing engine idle
speed the add itional ene rgy required is gener­
ated and the ba ttery is charged.
Intelligent technology 193
•
•

220 Checking and filling
-To reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before care­
fully opening the hood .
- Keep children away from the engine com ­
partment .
- Never spill fluids on hot engine compo­
nents. They can cause a fire.
- Never touch the radiator fan. The auxili­
ary electric fan is temperature controlled
and can switch on suddenly.
- Never open the coolant reservoir cap
when the engine is still warm. The cool­
ant system is pressurized and hot cool­
ant could spray out.
- Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the
coolant reservoir .
- Do not remove the engine cover under
any circumstances. This increases the
risk of burns.
- If work on the fuel system or the electri­
cal system is necessary:
- Always disconnect the battery.
- Never smoke or work near heaters or
open flames. Fluids in the engine com­ partment could start a fire.
- Keep an approved fire extinguisher im­
mediately available.
- To avoid electrical shock and personal in­
jury while the engine is running or being
started, never touch:
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair
with the engine running:
- First, fully apply the parking brake,
move selector lever of automatic trans- mission to
"P" (Park); put manual
transmission in Neutral.
- Always use extreme caution to prevent
clothing, jewelry, or long hair from get­
ting caught in the radiator fan, V-belts
or other moving parts, or from contact­ ing hot parts . Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine .
- Minimize exposure to emission and
chemical hazards
~ /1. .
A WARNING
=
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
California to cause cancer and birth de­
fects and reproductive harm. In addition,
certain fluids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
- 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 harms. Wash hands after handling.
(D Note
When adding fluids, always make sure that
they are poured into the proper container
or filler opening, otherwise serious dam ­
age to vehicle systems will occur.
@) For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly. If
you see spots from oil or other vehicle flu­ ids, have your vehicle inspected by an au­
thorized Audi dealer.

~ Read the brake fluid level from the brake
fluid reservoir ~
fig. 188, ¢ page 221,
fig . 184.
T he brake fluid level must be be ­
tween the "MIN" and "MAX" markings.
The brake f luid reservoir is located at the rear
partition of the engine compartment on the
l eft side
¢ page 221 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the brake pads . This is not cause for alarm .
If the brake fluid level falls considerably be­
l ow the "M IN" mark, the bra ke wa rning/ind i­
cator light (U .S . mode ls:
1111 , Canadian
models: .) will come on
¢ page 15. Do not
continue to operate the vehicle. The complete
brake system shou ld be thoroughly checked
by an authorized Audi dealer or qualified
workshop and the cause co rrected . If the
b rake fluid level is too low, the b rake wa rn ing/
i nd icator lig ht w ill illuminate . Co ntact an a u­
thor ized Audi dealer immediately.
@ Tips
The brake f luid rese rvoir is located unde r­
neath the cove r.
Changing brake fluid
Have the brake fluid changed by an experi­
enc ed technician .
Brake fluid ab sorbs moisture from the a ir. If
the water content in the brake fluid is too
hi gh, corrosion in the b rake system may result
after a per iod of t ime . The bo iling po int of t he
b ra ke fluid w ill also decrease con siderab ly and
d ec rease brak ing per forman ce.
Therefore, the brake flu id must be changed
every two year s. Always use new b ra ke fluid
which confo rms to Fede ral Motor Vehicle
S tand ard "FMVSS 1 16 DOT 4".
The brake flu id rese rvoir can be difficult to
r eac h, therefo re , we recommend that yo u
have the brake fl uid changed by yo ur aut ho r­
iz ed Audi dealer. Your dealer has the correc t
Checking and fillin g 229
tools, the right brake fl uid and t he know -how
to do this for you .
A WARNING
- Brake fl uid is poisonous. It must be stor­
ed only in the closed or iginal container
out of the reach of children!
- Brake failure can res ult from o ld or inap­
propriate brake f lu id. Observe these pre­
cautions:
- Use only brake fluid th at mee ts SA E
spe cificat ion
J 17 03 and conforms to
Fe dera l Mo to r Ve hicl e Standard 1 16.
Always check with yo ur autho rized Au di
dealer to make sure yo u are using the
correct brake fluid. The c orrect type of
brake f luid is also ind icated on t he
brake f luid reservoir .
- The bra ke fl uid must be new. Heavy use
of the brakes ca n cause a vapor lock if
the b rake fluid is left i n the system too
long. This can se riously affect the effi­
c iency of the b rakes as well as your
safety , T his could result in an accide nt.
(!) Note
Brake fluid will damage the pai nt of your
vehicle.
@) For the sake of the environment
Because of the prob lem of proper disposal
of brake fluid as well as the spec ial too ls
r equired an d th e nec essary exper tise, w e
r ecomme nd that yo u have th e brake flu id
c hanged by yo ur aut ho rize d Aud i dea le r.
Battery
General information
U nder normal operating cond itions, the bat­
te ry in your Audi does not need any ma inte­
nance . With
high outside temperat ures or
lo ng da ily drives we recommend that you have
t h e e lectrolyte leve l che cked by an autho riz ed
A udi de aler or qu alified workshop. The elec­
tro lyte leve l should also be checked e ach time
the battery is charged
¢ page 232 . 1J1>
•
•

230 Check ing and filling
Have the battery checked when you take your
vehicle in for service. You are well advised to replace a battery that is older than 5 years.
W ith certa in types o f airbag deployment, the
battery is disconnected from the vehicle elec ­
trica l system for safety reasons¢
& in Re­
pair, core and disposal of the airbags on
page 159.
Disconn ect ing the battery terminal s
Some vehicle functions (power window regu­
lators, for example) are lost if the battery ter­
minals are disconnected . These functions have
to be re learned after the battery terminals are
connected again. To prevent this, the battery
should only be disconnected from the vehicle
electrical system when absolutely necessary
for repairs .
Vehicles not dri ven fo r lo ng p eriod s
If you do not drive your vehicle over a period
of several days or weeks, electrical compo­
nents are gradually cut back or switched off.
This reduces energy consumption and main ­
tains starting capabil ity over a longer period
¢ page 192.
Some of the conven ience functions may not
operate, such as the inter ior lights or the
power seat adjustment. The conven ience
functions will be ava ilable again when you
turn on the ignition and start the eng ine.
Winter operati on
During the winter months, battery capacity
tends to decrease as temperatu res drop . This
is because more power is also consumed while
start ing , and the headlights, rea r window de­
fogger, etc., are used more often .
Avoid unnecessary power consumption, par­
ticularly in c ity traffic or when traveling on ly
short distances. Let you r authorized Audi
dea ler check the capacity of the vehicle bat ­
tery before winter sets in
¢ page 232. A well
charged batte ry w ill not only prevent sta rting
prob lems when the weather is cold, but wi ll
a lso last longer.
(D Tips
If your vehicle is left standing for seve ral
weeks at extremely low temperatures, the
vehicle battery sho uld be removed and
stored where it w ill not freeze . This will
prevent it from be ing damaged and having
to be replaced .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart­
ment under the floor. Before you check any­
t hi ng in the luggage compartment,
read and
heed all WARNINGS
¢ ,& .
Always heed the safety warnings , when work­
ing on the vehicle battery or the vehicle e lec­
trical system to prevent injury.
Th e follo wing WARNINGS are very
important when working on the battery :
Al ways heed the follo wing WARNING SYM­
BOLS and safety prec aution s when working
on the battery .
® Always wear eye protection .
,0,. Battery acid contains sulfuric acid . Al­
~ way s wear glov es and ey e prot ectio n.
~ No
\!SI -sparks
-flames
-smoking.
A Wh en a battery is charged , it produ ce s
~ hydro gen gas which is e xplosi ve and
c o uld cau se pe rson al injur y.
~ Always keep the battery well out of
'if!:11 reach of children .
_& 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:
-