2015 AUDI S4 battery

34 Openin g and clo sing
• Install the mechanical key.
@, For the sake 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 or iginal.
Emergency unlocking of the ignition key
In the event of malfunctions in the electrical
system, it may happen that you cannot re­
move the ignition key.
• Remove the mechanical key¢ page 33.
• Lock the veh icle using the mechan ica l key
¢page 37.
• Have the e lectrical system inspected by an
authorized Audi dealership.
Locking and unlocking the vehicle with
the remote control
F ig. 2 2 Remote master key: function buttons
• Press b utton III to unlock the veh icle
¢ fig . 22.
• Press b utton tfl to lock the vehicle ¢ A in
General description on page
31 .
• Press button ,c:J briefly to unlock the rear
li d.
• Press the button
,c:J for at least o ne second
to open the rear lid .
• Push the red
IPANICI button to a ct ivate the
panic fun ction. The horn sounds and the
t ur n s ignals flash. Push the red
I PANIC I but­
ton again to deactivate the panic function . If the vehicle is un
locked and no door, the rea r
lid or the hood is opened within 60 seconds,
the vehicle locks itself again automatica lly.
Th is feature prevents the vehicle from being
accidentally left unlocked over a long period
of time .
It depends on the settings in the radio or
MM!* whether the ent ire vehicle is unlocked
or on ly certain doors¢
page 36.
On vehicles with automatic t ransmission, the
selector lever must be in the P position , other­
wise the vehicle cannot be locked.
A WARNING
Read and follow all WARNINGS ¢ .&. in
General description on page
31 .
@ Tips
- In orde r to make sure the locking f unc­
tion is work ing, you should a lways keep
your eye on the vehicle to make s ure it is
properly locked.
- Do not use the remote control if you are
inside the car, otherw ise you may unin­
tentionally lock the vehicle , and then you
would set off the anti-theft alarm when
you try t o sta rt the engine o r open a
door. In case this h ap pens anyhow, push
t he unlock button@.
- Use the pa nic function o nly if yo u are in
a n eme rgency s ituation.
- Add itiona l remote co ntro l key functions
¢page 42.

Locking and unlocking with convenience
key
Applies to vehicles: with convenience key
The doors and the rear lid can be unlocked
and locked without operating the master key .
Fig . 23 Door handle : lock ing t he ve hicle
Unlocking vehicle
.. Take hold of the door handle . The door is un-
locked automatically.
.. Pull the handle to open the door.
Locking vehicle
.. Move the selector lever to the P position
(automatic transmission), otherwise the ve­
hicle cannot be locked.
.. To lock the vehicle, close the door and touch
the sensor in the door hand le
once Q fig. 23
¢ A in General descript ion on page 31. Do
not reach inside the door handle .
The vehicle can be locked and unlocked at any
door. The remote control key cannot be more
than 1.5 m away from the door handle. It makes no difference whether the master key
is in your jacket pocket or in your brief case .
If you grip the door handle while locking, this
can adversely affect the locking function.
It is not possible to re-open the door for a
brief period directly after closing it. This al­
lows you to ensure that the doors are properly
locked.
I t depends on the settings in the radio or
MMI* whether the entire vehicle is unlocked
M N or one of the doors¢ page 36.
~ co
rl I.O
"' rl
"' rl
Opening and closing 35
A WARNING
Read and follow all WARNINGS ¢.&. in
General description on page 31 .
(D Tips
If your vehicle has been standing for an ex­
tended period, please note the following:
- The proximity sensors are deactivated af-
ter a few days to save power . You then
have to pull on the door handle once to
unlock the vehicle and a second t ime to
open the vehicle.
- To prevent the battery from being dis­
charged and to preserve your vehicle's
ability to start for as long as possible,
the energy management system gradu­
ally switches off unnecessary conven­
ience functions. It is possib le that you
w ill not be able to unlock your vehicle us­
ing these convenience functions.
- For Declaration of Compliance to United
States FCC and Industry Canada regula ­
tions ¢
page 286.
Locking and unlocking the vehicle from
inside
Fig. 24 Drive r's doo r: pow er locking sw itch
.. Press the button@ to lock the vehicle¢ _A.
.. Press the button@ to unlock the vehicle
¢fig. 24.
If you lock the vehicle using the power locking
switch, please note the following:
- If a door is open , the veh icle cannot be
locked using the power locking system
switch.

40 Opening and closing
& WARNING
-Never close the rear lid inattentively or
without checking first. Although the
closing force of the rear lid is limited,
you can still seriously injure yourself or
others.
-Always ensure that no one is within
range of the rear lid when it is moving, in
particular close to the hinges 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 fully closed .
- Never leave your vehicle unattended es­ pecially with the rear lid left open. A
child could crawl into the car through the
luggage compartment and pull the lid
shut, becoming trapped and unable to get out . To reduce the risk of personal in­
jury, never let children play 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 rear 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
~ on the master key. When
the rear lid is closed again, it locks auto­
matically .
- The following applies to vehicles equip­
ped with the convenience key* feature: if
the remote control key is left in the lug­
gage compartment, luggage compart­
ment will automatically unlock itself af- ter you
lock the vehicle. This prevents
you from unintentionally locking your
key in the luggage compartment.
- If the vehicle battery charge drops be­
low a certain level, you can still open or
close the rear lid manually, however, you
will need to apply more force to close it.
Sedan: Rear lid emergency release
Applies to vehicles: with fixed rear seat backrest
Fig. 31 Rear ben ch s eat: e merg ency r ele ase ca ble
On vehicles with fixed seat backrest*, the rear
lid can be opened from the rear bench seat 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 release cable back in place and
press the bench seat back into its retainer .
& WARNING
After opening the rear lid using the emer­
gency release in vehicles with a fixed rear
seat backrest, make sure the bracket under
the rear bench seat
qfig. 31 locks securely
into the mounting eyelet again.

M N
~ co
rl I.O
"' rl
"' rl
.. Turn the key to position ¢ fig. 36@ until a ll
the windows have reached the desired posi­
t ion and the power sunroof is open.
Conv enience closing feature
.. Use the emergency key or pull the mechani­
ca l key out of the master key¢
page 33 .
.. Turn the key in the lock of the driver's door
to the lock position @ until the windows
and the power sunroof are closed
q &, .
F or vehicles w ith Panoramic sliding sunroof*:
When you open or close the Panoramic sliding
sunroof*, the power sunshade wi ll also open
or close.
A WARNING
- Never close the windows and the power
sunroof inattentive ly and without check­
ing -there is risk of injury.
- You must always watch when the win­
dows are being ra ised so that no one can
be trapped.
If you release the key, the
closing action is immed iate ly canceled .
- Always read and heed WARNING
¢.&. in
General description on page 31 .
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 until
the window is completely closed .
.. Release the switch and pull the switch again
f or one second.
Opening and closing 43
Sunroof
Operation sliding/tilting sunroof
Applies to vehicles: with sliding/tilting sunroof
Fig. 37 Section of h ead lin er: k nob fo r sunroo f
Tilting
Requirement: the roof switch must be in the
@ position
<=>fig. 37.
.. To t ilt it, br iefly press the switch ¢fig. 37.
.. To close it, briefly pull the switch<=>&, .
.. To set an intermediate posit ion, press/pull
the switch unti l the roof reaches the desired
position.
Opening/sliding
.. To s lide the roo f all the way open, turn the
switch to the
(D position.
.. To close the sunroof completely, turn the
sw itch to @ position
¢ &, .
.. To select a setting in between, turn the
switch to the desired position.
The sunshade can be opened and closed man ­
ually in any posit ion. When opening the sun­
roof, the sunshade is automatically opened.
After the ignition is switched
off, you can still
operate the sunroof for about 10 minutes. As
soon as the driver's or passenger's door is
opened, the switch is inoperative.
A WARNING
-
Pay careful attention when closing the
sunroof- otherwise serious injury could re­
sult! For this reason, always remove the ig-
nition key when leaving the vehicle.
II)>

66 Seats and st o rage
12-volt socket
Appl ies to vehicles: wit h 12-volt socket
Electrical accessories can be connected to the
12-volt socket.
Fig. 70 allroad Luggage compartment s ide trim: sock·
et
Fig . 71 Center conso le: socket
.,. Open the socket cover~ fig. 71 .
.,. Insert the plug of the e lectrical device into
the socket.
The 12-volt socket can be used for electrical
accessories. The power input must not exceed
120 watts.
There is an additional 12-vo lt socket in the
center console .
Before you purchase any accessories, always
read and fo llow the information in
~ page 285, Additional accessories and parts
replacement .
.&_ WARNING
The socket and the electrica l accessories
connected to it operate only when the igni­
tion is switched 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 equipment 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 that fit properly.
(D Tips
When the engine is off and accessories are
still plugged 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
ing arou nd a corne r.
- When you are dr iving make su re that
anyth ing you may have placed in the cen­
ter conso le or other sto rage locations
can not fall out i nto the footwe lls. In c ase
of sudden braking 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
any clothing with hard, pointed or heavy
objects in the pockets on the coat hooks .
During sudden braking or in an accident -
especia lly if the a irbag is d eployed -
these objec ts co uld inju re any passen­
gers inside the ve hicl e.
-

100 Transmission
@] Transmission malfunction: Limited driv­
ing functionality
There i s a sy stem m alfu nction in the transmi s­
sion. The tr ansmission is sw itch ing to emer­
gency mode. This mode only shifts into cer ­
tain gea rs or will no longer shift at a ll. The en ­
g ine may stall . Drive to your authorized A udi
dealer or qualified repair facility immediate ly
to have the ma lf u nction corrected .
@] l;I Transmission malfunction : No reverse
You can continue driving
S tron ic transm issio n: There is a system ma l­
function in the transmission. The transmis ­
sion is switc hing to eme rgency mode. This
mode on ly shifts into certain gears or w ill no
longer s hift 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 ­
cili ty immedia tely to have the malf unction
corrected.
@] Transmiss ion malfunction: Stop vehicle
and shift to p ark.
Do not cont inue driv ing. Select the P se lector
lever position and see yo ur authori zed Aud i
dealer or qualified repair facility for assis­
tance .
@ Note
If the transmiss io n sw itches to emergency
mode, you s houl d take the vehicle to an
author ized Audi dealers hip as soon as pos­
sib le to have the con dition co rrected .
Selector lever emergency release
Applies to vehicles: with multitronic/5 tronic/tiptronic
If the vehicle 's power supply fails, the selec­
tor l ever can be released in an emergency.
Fi g. 1 11 Fro nt ce nter co nsole: Remov ing t he as htray
in ser t
Fig. 112 Selecto r lever e mergency release
.. To access the emergency re lease mecha­
nism,
remove the ashtray insert @ using the
release sw itch
® c> fig. 111 .
... Loose n and remove the cap in the ashtray
mou nt.
1> You now have acc ess to a p in . Using a sc rew­
driver or sim ila r obje ct, press the p in down
an d hold i t in t hat pos ition¢
fig . 112.
.,. Now press t he re lease button and move the
selecto r leve r to the N positio n.
T he selecto r leve r ca n on ly be moved from the
P position if the key is in the lock and the igni­
t ion is swi tched on . If the power supply fails
(for example, the battery is discharged) and
the vehicle m ust be pushed or towed,
move
the selecto r lever to the N position first using
the emergency re lease.

158 Airbag system
-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.
- 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
chlorate. 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
dealer is familiar with these requirements
and we recommend that you have your
dealer perform this service for you.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced Airbag Sys­
tem performs in a crash. For example, using
tire-rim combinations not approved by Audi, lowering the vehicle, changing the stiffness of
the suspension, including the springs, suspen­
sion struts, shock absorbers etc. can change
the forces that are measured by the airbag sensors and sent to the electronic control
unit. Some suspension changes can, for

"" N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
The all-wheel drive concept is designed fo r
high engine power. Your vehicle is exception ­
ally powerful and has exce llent dr iving charac­
ter istics both under normal driving conditions
and on snow and ice . Always read and follow
safety precautions
c> & .
Winte r tir es
When driving in the winter, your ve hicle with
all-wheel drive has an advantage, even with
regular t ires. In winter road conditions it may
be adv isable to mount winter tires (or all-sea­
son t ires) for imp roved driveability and brak­
ing: these tires must be mounted on
a ll four
w heel s.
See also c> page 254, Winter tires.
Tire chain s
Where tire cha ins are mandatory on certain
roads, th is normally also applies to vehicles
with all-wheel drive
c> page 255, Snow
chains.
R eplacing wheel s/tire s
Vehicles with all-wheel drive must a lways
have tires of the same size. Also avoid t ires
with d ifferent tread depths . For details see
page ~
page 248, New tires and replacing
tires and wheels.
Off-Ro ad dri ving ?
Your Audi does not have enough ground clear­
ance to be used as an off-road veh icle. It is
therefore best to avoid rough tracks and un­
even terrain as much as possible . Also refer to
c> page 193.
A WARNING
Always adjust your driving to road and traf­
fic condit ions . Do not let the ext ra safety
afforded by all-wheel drive tempt you into
taking extra risks .
- Although the all-whee l dr ive is very ef­
fective, a lways remember that b raking
capacity is limited by tire traction. Yo u
sho uld therefore not drive at excessive
speeds on icy or slippery road surfaces.
- On wet road surfaces, be careful not to
drive too fast because the front wheels
Int ellig ent technolog y 191
could begin to slide on top of the water
(aquaplaning). If th is should occur, you
will have no warning from a sudden in­ crease in engine speed as w ith a front­
wheel drive veh icle . Always drive at
speeds which are su ited to the road con­
ditions - risk of crash.
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 conventiona l energy system
is not driven for a long period of time, the bat­
tery is discharged by idling current consumers (e .g. immobilizer). In certain circumstances it
can resu lt in there being insuffic ient energy
available to start the eng ine .
Intelligent energy management in your vehi­
cle handles the distribution of e lectr ica l ener­
gy. Start ing ability is markedly improved and
the life of the battery is extended .
Basically, energy management consists of
battery diagnosis , idling current manage­
ment
and dynamic ene rgy management .
Batte ry diagnos is
Battery diagnosis continuously determines
the state of the battery . Sensors determine
battery voltage, battery current and battery
temperature. This determines the current
state of charge and the power of the battery.
Idling current management
Idling current management reduces energy
consumption while the vehicle is standing.
With the ign ition switched off, it controls the
energy supply to the various electrical compo­
nents. Data from battery diagnos is is cons id­
ered .
Depend ing on the battery's state of charge,
individual consumers are gradually turned
off .,_ •
•