2015 AUDI S4 key battery

14 Instruments and warning/indicator lights
TPMS
smsoR
Electronic Stabilization Control
( ES C) ./
¢page 18
Electronic Stabilization Control
(ESC)
¢ page 185
USA models:
Anti-lock braking system (ABS)
defective ./
¢ page 19
Canada models:
Anti-lock braking system (ABS)
defective ./
¢ page 19
USA models:
Safety systems ./
¢page20
Canada models:
Safety systems ./
¢ page20
Worn brake pads
¢ page 20
E lectromechanical parking brake
¢ page 16
T ire pressu re monitoring
system ./
¢ page258
Tire pressure monitoring system
¢page258
E lectronic power control./
¢ page20
Malfunction indicator Lamp
(MIL) ./
¢ page 20
Engine speed limitation
¢ page20
Engine oil leve l
¢ page 17
Engine oil sensor
¢page 21
Battery
¢ page 16
Tank system
¢ page 21 Warm
up eng ine*
¢ page208
Windshield washer fl uid leve l
¢page21
Windshield wipers
¢page 21
Remote control key
¢page85
Battery in remote control key
¢page33
Defective light bulb warning
¢ page21
Fog lights
¢page 21
Rear fog light(s)*
¢page21
Headligh t range control*
¢page21
Adaptive light*
¢page22
Light-/rain sensor *
¢ page22
Adaptive dampers*
¢page22
Sport differential*
¢page22
I gnition lock
¢page 22
Steering column lock
¢page 18
Electromechanical steering, dy­
namic steering *./
¢pag e 190
Transmission
- mult itronic, t iptron ic
¢page99
- S tronic
¢ page 99
Transmission
- S tronic
¢ page 99

keys. Unguarded access to the keys pro­
vides children the opportunity to start
the engine and/or activate veh icle sys­
tems such as the power windows etc. Un­ supervised operation of any vehicle sys­
tem by ch ildren can result in serious in­
jury.
- Do not remove the key from the ignition
lock until the vehicle has come to a com­
plete stop. Otherw ise the steering col­
umn lock cou ld suddenly engage -caus­
ing the risk of an accident.
(D Tips
- The operation of the remote contro l key
can be temporarily disrupted by interfer­
ence from transmit ters in the vici nity of
the vehicle working in the same frequen ­
cy range (e .g . a ce ll phone, radio equip­
ment).
- Fo r security reasons, replacement keys
are on ly available from authorized A udi
dealer.
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions¢
page 286.
Removing the mechanical key
Fi g. 20 Remote master key: removing the mechanical
key
.,. Press the release button@¢ fig. 20.
.,. Pull the mechan ical key @ out of the master
key.
~ Using the mechanical key, you can:
~ co -lock and unlock* the glove compartment on
rl :5: the passenger's side 9 page 67.
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Op enin g an d clos ing 33
- lock and unlock the lockable * rear bench
seat and pass-through*
r=;, page 71.
- activate the child safety locks on the rear
doors
r=;, page 41.
- lock and unlock the vehicle manua lly
r=;, page 3 7 if this should not be possible
with the master key.
- use the ignition key emergency release
r=:> page 34.
Check light and battery in the master
key
Fig . 21 Remote master key: removing the battery hold­
er
Che ck light in the ma ster ke y
The check light @ r=:> fig. 21 in the master key
provides information about different condi­
t ions .
.,. The check light turns on briefly once when a
button is pressed, and during an "inquiry"
by the convenience key system .
.,. If the check light does not come on, the bat­
tery is dead and has to be replaced. In addi­
tion, when the battery is dead the
!I indi­
cator light appears in the instrument cluster
disp lay as well as the message
Plea se
c hange k ey batt ery.
Master key battery replacement
"'Remove the mechan ical key r=;, page 33 .
"' Press the release button @ i=:> fig. 21 on the
battery ho lder and at the same time pull the
bat tery ho lder out o f the maste r key in the
direction of the arrow.
.,. Insta ll the new battery CR 2032 with the
" + " sign facing down .
.,. Push the battery holder carefu lly into the
master key.

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.
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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
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.. 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)>

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.

"' N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Automatic climate control Air vents ... ..... ..... ... .. .. .. .... 80
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 79
Setup ... .. ................. .. .... 81
Automatic S hift Lock (ASL) .. .. .. .. .. .. 95
Automatic transmission . . . . . . . . . . . . . . . 93
Automatic S hift Lock (ASL) . . . . . . . . . . . 95
D riving .. .. ............. .... .. .. .. 95
E mergency mode . . . . . . . . . . . . . . . . . . . 99
E me rgency release ........ .. .. .. .. . 100
Kick -down . . . . . . . . . . . . . . . . . . . . . . . . . 98
M anual shift program .. ... .. .. .. .. .. 98
Remova l lock (ignition key) ... .. .. .. .. 82
Selector lever . . . . . . . . . . . . . . . . . . . . . . 94
Automatic wipe rs . . . . . . . . . . . . . . . . . . . . 55
Auto Safety Hotline . . . . . . . . . . . . . . . . . 134
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damag ing the vehicle .. .. .. .. .. . 193
B
Bag hooks . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
Battery . . . . . . . . . . . . . . . . . . . . . . . 16, 222
Battery location inside the luggage com -
partment .. .. ........... .. .. .. ... 222
Charging . ................ ... ... .. 224
Important warn ings when working on
the battery . ................ ... ... 222
J ump starti ng ............ .... .. .. . 274
L ow . .. .. .. .. .. ........... .. .. ... 19 1
Replacing the ba ttery .. ... .. .. .. .. . 225
State of charge . . . . . . . . . . . . . . . . . . . . 191
Winter operation . ..... ... .. .. .. .. . 222
Working on the battery .... .. .. .. .. . 222
B efore driving ............. .... .. .. . 126
Bio-ethanol (Fuel) ..... ..... .. .. .. .. . 208
Blended gasoline ... .... ... .. .. .. .. . 207
B lower (automatic climate cont rol) . . . . . . 80
Booster seats ............. .... .. .. . 173
B rake fl uid
Changing the brake fl uid ... .. .. .. .. . 22 1
Checking the brake fluid level ... .. .. . 221
Reservoir .. ............. .... .. ... 221
What is the correct brake flu id leve l? . . 221
What should I do if the brake fluid warn-
i ng light comes o n? .. ..... .. .. .. .. . 221
Inde x 289
Brake system . ..... ... .. .. ..... ... .. 221
Anti- lock b raking system ..... ... .. .. . 19
•
B rake assist system .. .. ..... ... .. .. 185 •
Brake fluid .. .. .. ................. 221
Brake fluid specifications for refill and re-
placement ...... .. ............... 221
B rake light defective ... .. .. ... ... .. . 21
B ra ke powe r ass ist unit ............ . 188
Br akes .. .. .. .. .. .. . .............. 188
Ceram ic bra kes . .. .... ........... .. 188
El ec tromechanica l parking brake ... .. . 87
Warning/indicator lights ..... ... .. .. . 15
Wor n brake pads symbo l . . . . . . . . . . . . . 20
B ra kin g
E mergency bra king f unct ion ..... .. .. . 89
braking guard . .. .... ... ....... ..... 101
Messages . . . . . . . . . . . . . . . . . . . . . . . . 109
Settings ........ .. ............... 108
Break -in per iod .. .. .... ............. 193
Tires ... .. .. .. .. .. ............... 193
Bul bs . ... .. .. .... .. . .. .. ..... ... .. 2 72
C
Califor nia Proposition 65 Warn ing . .. .. 213
B attery spec ifi c .. ............. .. .. 223
Capacities ........ .. ............... 281
Carbon pa rts
Cleaning . . . . . . . . . . . . . . . . . . . . 204, 205
Care ..... .. .. .. .... ... .......... .. 202
Cargo area
refer to L uggage compartment . . . 70, 132
Catalytic converter ... .. ...... ... .. .. 194
Cen te r armrest . . . . . . . . . . . . . . . . . . . . . . 62
Central lock ing .. .. ................. . 31
Cen tral lock ing switch ............. .. 35
Co nvenience key .. .. . .. .. .. ... ... .. . 35
Remote cont ro l key . . . . . . . . . . . . . . . . . 34
Ceram ic brake rotors
New brake pads .. ............. .... 188
Ce rtification . ... .... . ... ...... ... .. 286
Chang ing a flat t ire . .. ... ....... .... . 263
Chang ing a wheel .. ............. .... 263
Chang ing engine oil ............. .... 217
Checking Engine coolant level .... ....... .... . 218
Checking t ire pressure ............... 239