2014 AUDI S4 engine

Instruments and warning/indicator lights 17
0 Battery
The. warni ng/ind icator lig ht ill umin ates
when yo u switc h on th e igni tion and mu st go
ou t aft er the engine has s tarte d.
• Alternator fault: Battery is not being
charged
I f the i ndicator lig ht t urns on and t he mes­
sage appears, the re is a malf unction in t he
gen erato r or vehicle e lectr ica l system .
Drive to yo ur autho rized Aud i dea le r or quali­
fied workshop immediately . Because the vehi­
cl e ba ttery is disc harging, tur n off a ll unnec­
essa ry ele ct rical eq uipment suc h as th e radio.
S eek profession al ass is ta nce if the batte ry
ch arg e leve l is t oo low.
(•) low battery: Battery will be charged
while driving
If t he indicator lig ht t urns on and t he mes­
sage appears, the re may be limited starting
ab il ity .
If
t hi s message turns off after a litt le w hile,
the battery charged enough wh ile driving.
If t he message does not turn off, have your
author ized Audi dealer or qua lified wor kshop
c o rrect the malfunctio n.
't:::7: Engine oil pressure
The red en gine oil pressure warning symbol
requires immediate service or repair . Driving
with a low-oil -pressure indication is likely to
inflict severe damag e to the engine.
• Turn off engine! Oil pressure too low
If th e ind ic a tor lig ht tur ns on an d th e me s­
sage a ppears, the oil press ure is too low .
~ Pull off the road.
~ Sto p th e ve hicl e.
~T urno ff th e e ngine.
~ Check the engine oil level <=> page 219.
~ If the engi ne oi l leve l is too low , add engine
o il
<:!) page 219. Make sure that the oil pres ­
s ur e warning symbol. appea rs no longer
i n t he d isp lay before you start d riving aga in.
~ If the en gine o il level is co rrec t and the in di­
cato r light still turns on, turn the e ngine
off
and do not cont inue driv ing . See k pr ofessi o­
na l assistance .
(D Tips
- The engine oil pressure symbol. is
not an indicator for a low engine oil lev­
el. Do not rely on it. Instead, check the
oil level in your engine at regular inter­
vals, preferably each time you refuel,
and always before going on a long trip.
- The yellow oil level warning indication
Ill requires oil refill or workshop serv­
ice without delay . Do not wait until the
red oil pressure warning. starts to
flash before you respond to the low oil level warning
Ill. By then, your engine
may already have suffered serious dam­
age.
·
~ .. Engine oil level
• WARNING: Please add oil immediately
If the indica to r li ght and the message a ppear,
add engine oil immediately
c:!) page 216 .
El Add oil, max XXXX l. You may cont. driv .
When the symbol El and dr ive r message ap ­
pear, add the amoun t of oil app ear ing in t he
display at t he next oppo rtunity
r:=> page 21 6.
-L Engine cooling system
A malfunction in the engine cooling system
must b e repaired as soon as possibl e .
• Turn off engine and check coolant level
If the indicato r light turns on and the mes­
sage appears, the coolant temperature is too
high or the coolant leve l is t oo low.
~ Pull off t h e roa d.
~ Stop the vehicle.
~ Tu rnoff the engine .
~ Check coolant level<=> page 221 .
~ Add coolant if necessary <=> page 222.
~ Continu e dr iv in g o nly afte r the engin e cool-
ant wa rning/ind icator light goes ou t. ..,.

18 Instrum ent s and w arn ing /indic ato r light s
• Contact your authorized Audi dea ler fo r as-
sistance if necessary.
I f the engine coolant level is co rrect, then the
radiator fan may be the cause of the malfunc­
tion .
• Coo lant temper ature! L et engine run
with vehicl e sta tionary
If the indicator light turns on and the mes­
sage appears, let the engine run at idle fo r a
few minutes to cool down.
A WARNING
- If your veh icle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the engine and turn on the hazard
warning lights
c:> page 49, Emergency
flashers.
-
- Never open the hood if you see or hear
steam or coolant escaping from the en­
gine compartment -you risk being scald­
ed . Wait until you can no longer see or
hear steam or coolant escaping.
- The engine compartment of any veh icle
is a dangerous area. Before you perform
any work in the engine compartment,
tu rn of the eng ine and allow it to cool.
Follow the wa rning sticke rs
c:> page 214.
([) Note
Do not continue driving if the. symbol
illuminates . There is a malfunct ion in the
eng ine cooling system -you could damage
your eng ine .
@ -Steering column lock
• Stee ring defecti ve! Do not dri ve vehicle!
If the indicator light turns on and t he mes­
sage appears, the re is an elect ronic steer ing
col umn lock ma lfunction. You cannot switch
the ignition on.
Do
not tow your vehicle because it ca nnot be
steered. Seek professional assistance.
Ill S tee ring lock: Contact de aler!
If the indicator light turns on and the mes­
sage appears, there is an e lectronic steering
co lumn lock malfunct ion .
Drive to your authorized A udi dealer immedi­
ate ly to have the ma lfunction corrected.
A WARNING
-
Your veh icle must not be towed in the
event of a malfunction in the electronic
steering co lumn lock because it cannot be
steered due to the locked steering. If it is
towed with the steering locked, there is
the r isk of an accident.
© -Ignition lock
• Ignition lock d efe ctive . Contact deal er!
If the indicator light turns on and the mes­
sage appears, do
not switch the ign it ion off
because you may not be able to sw itch it on
again .
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected .
On vehicles with convenience key*, the engine
should not be switched off using the
I START ENGINE STOPI button because the en­
gine cannot be started again after the ignition
has been switched off .
(D Tips
The symbol's appearance might be differ­
ent in some models.
$=J I[}. Electronic Stabilization Control
( ESC)
If the JjJ ind icator light blinks while driv ing,
the ES C or ASR (Anti-Slip Reg ulation) is active­
ly reg ulating .
If the
GJ ind icator light tu rns o n, the system
has switched the ESC off. In this case, yo u can
swi tch the ign ition off and then on to switch
the ESC on again. The indicator light turns off
when the system is functioning fu lly. ..,..

20 Instrum ent s a nd w arn in g/i ndic ato r light s
Contact your authorized Audi dealer as
soon as possible.
- USA models: If the . warning light and
the
rJl1 warning light come on together,
the rear wheels could lock up first under
hard braking. Rear wheel lock-up can
cause loss of vehicle control and an acci­
dent . Have your vehicle repaired immed i­
ately by your authorized Audi dealer or
qualified workshop. Dr ive slowly and
avo id sudden, hard brake applicat ions.
- Canada models: If the brake warn ing
light . and the ABS warning light
[IJ
come on together, the rear wheels could
lock up first under hard braking. Rear
wheel lock-up can cause loss of vehicle
control and an acc ident. Have your vehi­
cle repaired immediately by your author­
ized Audi dealer or qualified workshop.
Drive slowly and avoid sudden, hard
brake applicat ions.
~ /!J.' Safety systems
The fl (USA models)/ E,I (Canada models) in­
d icator light monitors the safety systems (e .g.
a ir bags, pretensioners) and ill uminates for a
few seconds each time you switch the ignition
on.
I f the
fl (USA mode ls)/ E,I (Canada models)
i ndi cato r light does not go out, or if it illumi­
nates wh ile you are driv ing, or if it sta rts to
blink, then there is a ma lfunction somewhere
in the system.
If the light does not illuminate
when you switch the ignition on, this also means there is a malfunction.
A WARNING
If you have a malfunction in the safety sys­
tems, contact your author ized Audi dealer
immediately. Otherw ise the safety sys­
tems may not work properly in an acci­
dent.
l) .: USA mode ls on ly
(0) Worn brake pads
llJ Br ake pad s!
If the warning light illuminates, immed iately
contact your authorized Audi dealer or quali­
fied workshop to have all brake pads inspect­ ed . On USA models the warn ing light
llJ
comes on together with the warning light •.
Both sets of brake pads on an axle must al­
ways be replaced at the same time.
A WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the warning light
llJ and the warning
light
. 1) with the message Brake pads!
comes on in the instrument cluster dis­
play, immediately contact your author­
ized Audi dealer or qualified workshop to
have all brake pads checked or replaced if
necessary.
EPC Electronic power control
This warning/indicator light monitors the
electronic power control.
The l3i warn ing/ indicator light (Electron ic
Power Control) illuminates when you sw itch
the ignit ion on as a function check.
(D Tips
If this warning/ indicator light illum inates
while you are driving, then there is a mal­
funct ion in the engine electronics. Have
the malfunct ion corrected as soon as pos­
s ible by your authorized Audi dealer or a
qualified repa ir facility.
Ci Malfunction Indicator Lamp (MIL)
T he Ma lfun ction Indicator Lamp (MIL) is par t
of the On-Board Diagnostic (OBD II) system.
-
The symbo l ('4 lights up when the ignition is
switched on and will turn off after the engine
has started and has settled at a constant idle
IJ>,

Instruments and warning/indicator lights 21
speed. This ind icates that the MIL is working
properly.
The warning light illuminates when there is a
mal funct ion in the engine e lectronic system.
Contact your authorized Audi dealer and have
the ma lfunction corrected .
An improperly closed fuel filler cap may also
cause the MIL light to illum inate
r::!,> page 212.
For more informat ion r:!,> page 30 .
!?) Engine speed limitation
App lies to vehicles: wit h eng ine speed lim itat ion
Ill Do not exceed max. engine speed of
XXXX rpm
The Ill symbol illuminates when there is an
engine control malfunction . The
'3i indicator
l ight in the instrument cluster also illumi­
nates. The engine speed is lim ited to the
speed displayed in the driver information sys ­
tem . Keep in mind that the engine speed will
not exceed the va lue disp layed in the driver in­
formation system, for example when down­
shifting.
Drive to your authorized Audi dea ler immedi­
ately to have the malfunction corrected .
'.!2:;,.,, Engine oil sensor
• Oil level! Sensor defective
If the symbol illuminates, contact your au­
thorized Audi dealer and have the oil sensor
inspected. Until you have this done, check the
oil level each time you refuel just to be on the
sa fe side
r:!,> page 219 .
Bil Tank system
(iD Please refuel
If the indicator light turns on for the f irst
time and the message appears, there are
about 2.1- 2 .4 gallons (7 -9 liters) of fuel left
in the tank. Time to refuel
r::!,>page 211 .
DD Fuel tank system malfunction! Contact
dealer
If the indicator light turns on and this mes­
sage appears, there is a malfunction in the
tank system.
Drive to your authorized Audi dealer immedi­
ate ly to have the malfunction corrected.
C> Windshield washer fluid level
II Please refill washer fluid
If the symbol illum inates, add windshield
washer fluid to the washer system and also to
the headlight washer system*
r:!,> page 228.
~ Windshield wipers
El Windshield wiper defective
The re is a malfunc tion with the windshie ld
wipers .
Drive to your author ized Audi dealer immedi­
ate ly to have the malfunction corrected .
~/ }D /0$ Defective light bulb warning
If the S:$ indicator light turns on, a bulb has
failed. The message indicates the location of
the bu lb.
- If the
El indicato r light also turns on, then
a fo g lig ht has failed. The position of the in­
dicator light corresponds w ith the location
on the vehicle .
- If the
II indicato r light also turns on, then
a rear fog * light has failed. The position of
the indicator light corresponds with the lo­
cation on the vehicle .
T his wa rning can also occur if the light switch
is in an unengaged position between two sym­
bols.
Vehicle lights: System fault!
If the message appears, there is a malfunc ­
tion in the headlights or light sw itch .
Drive to your au thori zed Audi dealer immedi-
ately to have the malfunction corrected .
IJJ,,

24 Driver information d isplay
Driver information
display
Introduction
The Driver information display inside the in­
strument cluster provides you, the driver,
with important information.
Fig. 7 Instrument cluster: ce nter display
Fig. 8 Wiper lever: controls for the menu display
Center display
With the ignition on, the display in the Dr iver
I nformation System shows the following in­
formation:
- CD* inserted or Radio* station set
- Outside temperature*: At temperatures be-
low 41 °F (+S °C), a snowflake symbol ap­
pears in front of the temperature display
c::> .&_.
-Warning if one of the doors, front lid or en-
gine compartment lid is not closed.
Additional functions
You can open the following functions in the
Driver Information System display by pressing
the
! RESET I button c::> fig. 8 one or more times:
Digital speedometer*
Tire pressure monitoring*
<::>page249
Trip computer* <::>page25
Efficiency program* <::> page 27
Service interval display <::> page 29
Speed warning <::> page 87
Gearshift selector positions <::> page 92
Automatic transmission
Adaptive cr uise control*
<::> page 99
Auto Check Control
Some functions and vehicle components are
scanned for their operating status when you
switch the ignition on and whi le you are driv­
ing . Malfunctions or required service proce­
dures are signaled audibly and indicated by
red and yellow illuminated symbols and re­
minders in the d isplay.
A WARNING
--- Never rely exclusively on the outside
temperature display to determine if a
road surface is icy or not . Keep in mind
that road surfaces , espec ially br idges
and overpasses, could be ice covered and
slippery even at an outside temperature
above 41 °F (+S °C).
- Always remember,
even if the "snow­
flake" symbol (ice warning) does not ap­
pear in the disp lay, black ice cou ld be on
the road.
- Always reduce your speed and drive with
specia l care in cold weather conditions
when the chance of encountering icy
road surfaces increases.
¢j) Tips
If the vehicle is stationary, or if you are
driving at a very low speed, the tempera­
ture shown in the display might be slightly
higher than the actual outside tempera­
ture. This i.s caused by the heat being radi­
ated from the engine .

30 Driver information display
Resetting the service interval display
Your authorized Audi dealer will reset the cor­
responding service schedule after performing
the appropriate service on yo ur 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 ICARI
function button> Car systems* control but­
ton
> Servicing & checks > Reset oil change
interval.
(D Note
If you disconnect the battery terminals, no
calculations can be made for the serv ice
interval display during this time and no
service rem inder wi ll appear. Remember
that observing the proper service intervals
is vitally important to extend ing the life of
your vehicle, particu larly the eng ine, and
maintaining its value. Even if the mileage
driven is low, the maximum period of one
yea r from one service to the next must not
be exceeded .
@ Tips
-Do not reset the display between oil
changes, otherwise the display will be in­
correct.
- The information in the Service Reminder
r ema ins stored even when the vehicle
battery is disconnected.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) ¢4' i n
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 working proper­
ly.
If the light does not go out after the engine
is started, or illuminates while you are driv­
i ng, a malfunction may exist in the eng ine sys­
tem . If the light illuminates, the catalytic con­
verter could be damaged .
Continue driving
with reduced power (avoid­
ing sustained high speeds and/or rapid accel­
erations) and have the cond ition corrected.
Contact your authorized Audi dealer.
If the light il luminates, the electronic speed
limiter may also be malfunct ioning. For more
information
c:> page 31 , Electronic speed
limiter.
An improperly closed fuel filler cap may also
cause the
MIL light to illuminate
c:>page 212.
On-Board Diagnostics
Fig . 18 Locat io n of Data Link Con nector (D LC)
On-Board Diagnostics monitors the compo ­
nents of your emission control 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 memory.
The MIL light may also illuminate if there is a leak in the on-board fuel vapor recovery sys­
tem. If the light illuminates after a refueling,
stop the vehicle and make sure the fuel filler
cap is properly closed
c:> page 212 .
In order to make an accurate diagnosis, the
stored data can on ly be displayed using spe­
c ial diagnostic equipment (generic scan tool
furOBD) .
~

In o rder to connect the special diagnostic
equipment, push the plug into 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.
A WARNING
Do not use the diagnostic connector for
personal use. Incorrect usage can cause
malfunctions, 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 may be less than
the maximum speed of your ve hicle. To red uce
the risk of sudden ti re failure and loss of con ­
trol if the vehicle is operated at excessive
speeds, your vehicle has an e lectronic speed
limiter. The electronic speed limiter prevents
your veh icle from going faster than the t ire
speed rat ing . For more informat ion
¢ page 242 .
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, contact the nearest authorized Audi
deale r for assistance.
A WARNING
-
Always observe the posted speed limits
and ad just yo ur speed to suit p revail ing
road, traff ic and weather conditions . Never
drive your vehicle faster than the maxi ­
mum speed rating of the tires insta lled .
Dri ver information di spla y 31

-If the power lock ing system should ma l­
function, you can lock the driver's door
using the mechanical key~
page 38.
-If the power locking system should fail,
you can still open the fue l tank flap in an
emergency <=>
page 213.
-You are well advised not to keep valua­
bles inside an unattended vehicle, visible
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 about 30
seconds after the vehicle is locked, there
i s a malfunction in the power locking or
the anti-theft warning system. Have the
malfunction corrected by an author ized
Audi dealersh ip or qua lified repair fac ili­
ty.
Key set
Fig. 19 Key set
@ Remote cont rol k ey with me chanical
ke y
You can centrally lock and unlock your vehicle
and start the engine with the master key with
remote control. A mechanical key is integrat ­
ed i n the master key
<=> page 34 .
@ Emerg ency key
The emergency key is not intended for con­
stant use.
It should on ly be used in an emer­
gency, for example, in place of the ign ition key
<=> page 82. Keep it in a safe p lace and do
not carry it on your key ring .
Openin g an d clos ing 33
Ke y re plac ement
If you lose a key, contact your author ized Audi
dealer immediate 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
you r vehicle <=>
page 11. This allows you to
make sure you have re ceived all of the keys
when you purchase a used vehicle.
Data in th e mast er ke y
During driving, service and maintenance-rele­
vant data is continuously stored on your mas­
ter key. Your Audi service adviser can read out
this data and tell you abo ut the work yo ur ve­
hicle needs . This applies also to vehicles with
convenience key*.
Person al comf ort settings
If two people use one vehicle, it is recom­
mended that each person always uses "their
own'' master key. When the ignition is turned
off or when the vehicle is locked, pe rsonal
convenience settings for the following sys ­
tems are stored and assigned to the remote
master key.
- Climate control
- Powe r locking system
- Seat memory*
- Parking system*
- Adaptive cruise control*
- Side assist*
- Drive select*
T he sto red settings are automatically recalled
when you unlock the vehicle, when you open
the doors or when you turn on the ignition .
A WARNING
--
-Do not leave your vehicle unattended
with the key in the ignition lock . Entry by
unauthorized persons could endanger
you or result in theft or damage the vehi­
cle .
- Do not leave ch ildren unattended in t he
veh icle, especially with access to vehicle