AUDI S4 2015 Owner's Guide

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Resetting the service interval display
Your authorized Audi dealer w ill rese t the cor­
responding service schedule after performing
the appropriate service on your vehicle. Yo u
also have the possibility to reset the oil
change schedule after having performed an
oil change according to Audi specifications.
Select
I CAR I function button > Service interval
display > Reset oil change interval
or !CARI
function button > Car systems* control but­
ton
> Servicing & checks > Reset oil change
interval.
0 Note
- Only reset the oil change d isplay when
you have completed an oil change.
-If you disconnect the battery terminals,
no calculat ions can be made for the serv­
ic e interval display during this tim e and
no service rem inder will appear. Remem­
ber that observing the proper service in­
terva ls is vitally important to extending
the life of your vehicle, particularly the
engine, and maintaining its va lue. Even if
the mileage dr iven is low, the max imum
period of one year from one serv ice to
the next must not be exceeded .
(D Tips
The informat ion in the Service Reminder
remains stored even when the vehicle bat­
tery is disconnected.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) ¢..ift in
the instrument cluster is part of the On-Board
Diagnostic (OBD II) system.
The warning/indicator light illuminates when
the ignition is switched on and goes out after
the engine starts and the idle has stabilized .
This indicates that the MIL is work ing proper­
l y.
Driver information display 29
If the light does not go out after the engine
is started, or illuminates while you are driv­
ing , a malfunction may exist in the engine sys ­
tem.
If the light illuminates, the catalytic con­
verter could be damaged.
Continue d rivin g
with reduced power (avoid­
ing su sta ined high speeds and/or rapid accel ­
erations) and have the cond ition corrected.
Contact your authorized Audi dealer.
If the light illuminates, the electronic speed
li miter may also be malfunct ioning. For more
information
c;,page 30, Electronic speed
limiter.
An improperly closed fuel filler cap may also
cause the MIL light to illuminate
c:;, page 210.
On-Board Diagnostics
Fig. 18 Location of Data Link Connector (D LC)
On-Board Diagnostics monitors the compo­
nents of your emission contro l system . Each
monitored component in your engine system
has been assigned a code. In case of a mal­
function, the component will be identified
and the fault stored as a code in the control
module memo ry .
The MIL light may also illuminate if there is a
leak in the on-board fuel vapor recovery sys­
tem. If the light illumi nates afte r a refueling,
stop the vehicle and make sure the fuel filler
cap is properly closed
¢ page 210.
In order to make an accurate diagnosis, the
stored data can on ly be displayed using spe­
c ial diagnostic equipment (generic scan tool
for 080). .,.

30 Driver in formation d isplay
In o rder to connect the special diagnostic
equipment, push the plug i nto the Data Link
Connector (DLC) . The DLC is located to the
right of the hood release¢
fig. 18.
Your authorized A udi dealer or qualified work­
shop can interpret the code and perform the necessary repa ir .
.&_ WARNING
Do not use the diagnostic connector for
personal use. Incorrect usage can cause
ma lfunctions, which can increase the risk
of a coll is ion!
Electronic speed limiter -
Your veh
icle may be factory equipped with
tires that are rated for a maximum speed of 130 mph (210 km/h) . Thi s is m ay be less than
the maxim um speed of your ve hicle. To red uce
the r isk of sudden tire fail ure and loss of con­
trol if the vehicle is operated at excessive
speeds, yo ur vehicle has an e lectronic speed
limiter. The electronic speed limiter prevents
your ve hicle from going faster than the tire
speed rat ing. For more information
c::> page
248 .
If the engine control unit rece ives fa ulty vehi­
cle roadspeed signa ls, the Ma lfunction Indica­
tor Light (MIL)
¢4 will illuminate . If this oc­
curs, co ntact the nearest author ized Audi
dealer for assistance .
.&_ WARNING
-
Always observe the pos ted speed limits
a n d adj ust yo ur speed to sui t prevailing
road, traffic and wea ther conditions . Never
drive you r vehicle faster than the maxi­
m um speed rating of the tires insta lled .

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Opening and closing
Power locking system
General description
The power locking system locks or unlocks all
doors and the rear lid simultaneously.
You can lock and unlock the vehicle centrally.
You have the following choices:
- Remote master key~
page 34,
-Door handles with convenience key*
O?page 35,
-Lock cylinder at the dr iver's door
r=> page 3 7, or
- Power lo cking switc h inside
<:!>page 35.
Automatic locking
The automat ic locking feature locks all the ve­
hi cle doors and the rear lid when you drive
faster than 9 mph (15 km/h).
The car is un locked again once the ignition key
is removed . In addition, the veh icle can be un­
locked if the opening fu nction in the power
lock ing system sw itch or at one of the door
l eve rs is actuated. The Au to Lo ck function can
be turned o n and off in the rad io or
MMI*
r=> page 36 .
Additionally, in the event of a c rash with air­
bag deployment the doors are automatically
u nl ocked to a llow access to the veh icle.
Selective unlocking
When you lock the vehicle, the power locking
system w ill lock the doors and the rear lid.
W hen unlocking, you ca n set in the rad io or
M MI* whethe r
only the dr iver's door or t he
enti re ve hicle should be unlocked
r=> page 3 6.
Anti -theft alarm warning system
If the a nti-theft alarm warning system de­
tects a brea k-in into t he vehicle, acoust ic and
visua l wa rning sig na ls are triggered.
The an ti-theft warn ing system is act ivated au­
tomatically when you lock the vehicle .
It is de­
activated when u nlocking using the remote
Opening and clo sin g 31
key, w ith the mechan ica l key, and when you
switch on the ignition.
T he al arm a lso t urns off w hen t he a la rm cy cl e
has expired.
Turn signals
When you u nlock the ve hicle, the turn signals
flash twice, when yo u lock it once. If they do
not flash, one of the doo rs, the luggage com ­
partment lid or the hood is not lo cked or the
ignition is s till sw itched on.
Unint entionally locking yourself out
In the follow ing cases there safeg uards to
prevent you lock ing you r remote master key in
t h e ve hicl e:
- The vehicle does not loc k w ith the power
lock ing switc h
r=> page 35 if the drive r's
door is open.
- On veh icles with convenience key*, if the
most recently used master key is in the lug­
gage compartment, the rear lid is a utomat i­
cally u nlocked again after it is closed.
Do not lock your veh icle w ith the remote mas­
te r key o r convenience key* unt il all doors a nd
the rear lid a re closed. In this way you avoid
l ocking yo urse lf o ut accidentally.
_&. WARNING
-
-When you leave the veh icle, alw ays re ­
move the ignition key an d take it with
you. This wi ll prevent passengers (chil­
dren, for example) from acc identally be ­
ing locked in the vehicle should they acci­
dentally press the power locking switch in the front doors.
- Do not leave ch ildren inside the vehicle
unsuperv ised. In an emergency it would
be imposs ible to open the doors from
the o utside w itho ut the key.
(D Tips
- In the event of a crash with airbag de­
ployment all locked doors will be auto­
matically unlocked to give access to the
v ehicle occupants from the outside.

32 Opening and clo sing
- If the power locking system should ma l­
function, you can lock the driver's door us ing the mechanical key
c:> page 3 7.
- If the power locking system should fail,
you can sti ll open the fue l tank flap in an
emergency
c:> page 211.
- You are we ll advised not to keep valua­
bles inside an unattended vehicle, visib le
or not. Even a properly locked vehicle
cannot provide the security of a safe.
- If the LED in the upper edge of the driv­
er's door panel comes on for abo ut 30
seconds after the vehicle is locked, there i s a ma lfunction in the power locki ng or
the anti-theft warning system. Have the
malfunction corrected by an author ized
A udi dealersh ip or qua lified repai r fac ili­
ty.
Key set
F ig . 19 Key set
@ Remote cont rol key with mechanical
key
You can centrally lock and unlock your vehicle
and start the engine with the master key with
remo te con trol. A mec hanical key is integ rat­
ed i n the master key
c:> page 33 .
@ Emergency key
The emergency key is not intended for con­
stant use.
It should on ly be used in an emer­
gen cy, fo r example, in place of the ign ition key
cc> page 84. Keep it in a s afe p lace and do
not ca rry it on your key ring .
Key replacement
If you lose a key, contact you r authorized Audi
dealer immed iate ly to have the
Lost key disa­
bled. Be sure to bring all your keys with you .
Number of keys
You can check the number of assigned keys to
yo ur vehicle
c:> page 11. This allows you to
make su re you have re ceived all of the keys
when you purchase a used vehicle.
Data in the master key
D uring d riving, s ervice and maintenance-rele­
vant data is continuously stored on your mas­
te r k ey. Your Aud i service adviser can read out
t hi s data and tell you abo ut the work yo ur
ve­
hicle needs . This applies also to vehicles with
convenience key*.
Personal comfort settings
If two people use one veh icle, it i s r ecom­
men ded that e ach person alw ays uses "t heir
own" maste r key. When the ignition is tu rne d
off or when the vehicle is locked, personal
convenience setti ngs for the following sys ­
tems are stored and assigned to the remote
master key.
- Climate contro l
- Powe r lock ing system
- Seat memory *
- Parking system*
- Adapt ive cru ise control*
- Side assist*
- Drive se lect*
T he s to red settings are au toma tically recalled
whe n you unlock the vehicle, when yo u open
t h e doors or w hen you t urn on t he ignitio n.
A WARNING
-Do not leave your vehicle unattended
wit h the key in the ignition lock. Entry by
unaut horized persons co uld endanger
you or result in theft or damage the vehi­
cle.
- Do not leave ch ildren unattended in the
veh icle, especially with access to vehicle

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.

36 Openin g and clo sing
- You cannot open the doors or the rear lid
from the
outside (increased security, for ex­
amp le when you are stopped at a red light).
- The diodes in the power locking switch illu­
minate when all the doors are closed and
locked.
- Front doors: you can un lock and open the
doors from the inside by pu lling on the door
hand le.
- Rear doors: pu ll the door handle
once to re ­
lease the lock. Pull the hand le
again to open
the door.
- If you hav e a crash and the airbag is activat­
ed, the doors automatically un lock.
A WARNING
- The power locking sw itch works w ith the
ignition off and automatically locks the
entire vehicle when it is actuated .
- On a vehicle locked from the outs ide the
power locking system switch is inopera ­
t ive .
- Locked doors make it more difficult for
emergency workers to get into the vehi­
cle, which puts lives at risk . Do not leave
anyone beh ind in the vehicle, especially
children.
(D Tips
Your vehicle is locked automatically at a speed of
9 mph (15 km/h) (Auto Lock)
r:::;, page 31. You can un lock the veh icle
aga in using the opening f unction in the
power locking sys tem switch
@I .
Setting power locking
In the radio/MM!* , you can set which doors
t he central locking system will unlock.
~ Select : I CAR! funct ion button > Central lock­
ing .
Or
~ Select : ~I C-A-R~ ! fu nct ion but ton > Car sys tem s*
control b utton > Vehicle setting s > (Central
loc king )*.
Single door un locking/Unl ock door s* -
you
can specify which doo rs un lock when you open
the veh icle. -
Selecting
off /All and pressing the Iii button
on the remote control key unlocks the entire
veh icle.
- Selecting
on/Dri ver and pressing the Iii but­
ton on the remote control key once un locks
only the driver's door. In vehicles with a con­
ven ience key*, only the door whose handle
you pull w ill unlock. I f you press the
Iii but­
ton tw ice, the entire vehicle will unlock . If
you press the [@] button, the enti re vehicle
w ill always lock .
Luggage com p. loc k/Lock ext erior tr unk han­
dl e -
If you select On , you can no longer open
the luggage compartment using the rear lid
hand le
r:::;, page 38, fig. 2 7. In this case, the
r ear lid can be opened with the
l=I bu tton on
the master key
r:::;, page 34, fig. 22 or w ith the
l= I* button in the driver 's doo r r:::;,page 39,
fig .
29.
Fold mirrors * if you selec t On , the outs ide
mirrors will fo ld in au tomati cally when yo u
press the
Iii button on the remote cont ro l key
r:::;, page 52.
To ne when lo cking -if you selec t On, a tone
will sound when yo u lock t he vehicle.
Auto Lo ck /Loc k when dri ving -if you select
On, the enti re vehicle w ill lock automatically
whe n the speed reaches
9 mph (1 5 km/h).

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Emergency locking
Fig . 2 5 Driver's door: lock cylinde r
Fig. 2 6 Front passenger's door/rea r doo rs *: emergency
loc k
If the centra l locking sys tem ma lfunctions,
you mu st unlo ck/ lo ck the d oo rs separa tely us­
in g the eme rgency key or the mechan ic al key.
Unlocking /locking the driver's door with
the mechanical key
.,. Re move the me chanical key~ page 33.
.,. To u nlock the driver's door, turn the key to
the open position @~
fig. 25.
.,. To lock the dr ive r's door, move the se lector
lever to the P position (automatic transmis­
s ion) and t urn the key
once to the close posi­
tio n
@ <=> .& in General description on
page 31.
Locking the front passenger's door /rear
doors* w ith the mechanical key
The emergency lock is located on the rear side
of the front passenger's door and the rear
doors .
It is only v is ible when the door is open.
.,. Remove the mechanical key
<=> page 33.
.,. Pull the cover cap out of the opening
<=>fig. 26.
Opening and clo sin g 3 7
.. Insert the key in the ins ide s lot and turn it
all the way to the right (right door) or left (left door).
Once t he front passenge r's door/rea r doo rs *
have been closed, yo u ca nn ot o pen th em
again from the o utside . The door can be
opened from the inside by pulling the door handle. If the child safety lock in a rear door*
is activated, you must first pull the door han­
dle on the inside . Then you can open the door
from th e outside .
.&_ WARNING
Read an d foll ow all WAR NING S ¢.& in
G enera l des crip tion on p age 3 1.
© Tips
-
Afte r the ignition is switche d on, the pow­
er locking sys tem switch and the u nloc king
bu tton for the rear lid
cs in the d oo r a re
e na bled.
Electronic immobilizer
The immobiliz er pr eve nts your vehicle from
being star ted by unau tho riz ed persons.
Inside the key there is a com pute r ch ip. This
c hi p a utomat ica lly activates/deactiva tes the
electron ic immobili zer.
Applies to vehicles with ignition lock:
The electronic immobilizer deact ivates auto­
matically when yo u insert the remote contro l
key into the ign ition lock .
It activates again
a utomat ica lly when you remove the remote
control key from th e i gni tion lock.
Applies to vehicles with convenience key:
If the remote control key is located inside the
vehicle and you press the
!S TART ENGI NE STO P I button, the elect ro ni c
immobi lizer deactiva tes a uto mat ica lly . If you
swi tch t he ig nition o ff and rem ove the remo te
c o ntrol key from the vehicle, the elec tronic
immo bili zer activates again a utomat ically. .,..

38 Openin g and clo sing
& WARNING
Always take the key with you when you
leave the vehicle . The key can disarm the
electronic engine immobilizer and perm it
an unauthor ized person to start the engine
and enable ope rat ion of the vehi cle sys­
tems such as powe r window or power sun­
roof leading to ser ious personal in jury .
- The vehicle cannot be started if an unau­
thorized key is used. The vehi cle may not
star t if another radio device such as a key
for another vehicle o r a tra nsponder is
l ocated on the key ring.
- For De clarat ion of Compli ance to Uni ted
States FCC and Indus try Canada regu la­
tions¢
page 286.
Rear lid
Opening/closing rear lid
Fig . 27 Rear lid : hand le
F ig. 2 8 Sedan drive r's door: remote rear lid release •
Opening the rear lid
.,. Press the but ton c:s on the remote cont ro l
master key for at least one second. The rear
l id unlocks and opens slightly. Or .,.
Press the handle on the rear lid
q fig . 2 7. Or
.,. Sedan: Pull the release button
c:s in the
driver's door ¢
fig. 28
Closing the rear lid
.,. Pull the rear lid down at the grip on t he in ­
side and allow it to drop gent ly to close it
q _&. .
A WARNING
-After closing the rear lid, a lways p ull up
on it to make sure that it is properly
closed. Otherwise it could open suddenly
when the vehicle is moving.
- To help prevent poisono us exhaust gas
from being drawn into t he vehicle, al­
ways keep t he rear lid closed wh ile driv­
ing. Never transport objects la rger than
those which fit complete ly into the lug­
gage a rea, beca use then the rear lid can­
no t be f ully closed.
- Never leave your vehicle unattended es­
peci ally with the rear lid left open. A
chi ld cou ld craw l into the car through the
luggage compartment and p ull the lid
shut, becoming trapped a nd u nable to
get o ut. To reduce the risk of personal in­
jury, never let c hildren play in or around
your veh icle. Always keep the rear lid as
well as the vehicle doors closed when not
in use.
- Always ensure that no one is within
range of the rear lid when it is moving, in
particular close to th e hinges -fingers or
hands can be pi nched.
@ Tips
When the vehicle is locked, the rear lid can
be opened separately by pressing the but­
ton
c:s on the master key. When yo u close
the rea r lid again, it locks automatica lly.