2016 AUDI S4 fuel cap

Instrumen ts and ind icator ligh ts
the I SET! button, you de lete the warning thresh­
old.
Digital clock with date display and
Odometer
F ig . 5 Ins trum en t cluster: odo meter
Fig . 6 Instrument cluster: reset bu tton
Digi tal clock/GP S controll ed cl ock*
Depending on the vehicle equipment level, you
may choose between the quartz clock or the
GPS
controlled clock* l!j in the radio or in the MMI *.
You can learn more about this in the MMI manual
or in the rad io user 's manual.
Odometer /t ri p odomete r
The display of distance driven is shown in kilome ­
ters "km" or in miles "mi".
- USA mode ls - Miles
- Canada models - Kilometers
The units of measure (kilometers/miles) can be changed in the radio or MMI* . You can learn
mo re about this in the MMI manual or in the ra­
d io user's manual.
The odometer @ shows the total number of kilo ­
meters or miles that have been driven on the ve­
h icle .
12
The trip odometer @ shows the distance driven
since it was last reset.
It can be used to measure
short distances. The last digit shows distances of
100 meters or 1/10 of a mile .
The trip odometer can be reset to zero by press ­
ing the reset button
!O.O I ¢ fig. 6.
Malfunction message
If there is a malfunction somewhe re in the in­
strume nt cluster,
DEF w ill appear in the tr ipod­
ometer and w ill stay on. Contact yo ur authorized
Aud i dealer to have the prob lem corrected.
Immobilizer
When the ignition is switched on, the data on the
i gnition key are scan ned automat ica lly .
If an unauthor ized key was used,
SAFE is d is·
played permanently in the odomete r display
field . The vehicle cannot be operated
¢ page 32 .
{i) Tips
-When you switch off the ignition or open
the driver door, the time, date, odometer
and tempe rature are displayed for an addi­
tional
30 seconds.
- You can also call up the display with the
!SE T! button¢ page 11 while the ignition is
switched off .
Fuel gauge
The fuel gauge works only when the ignition is
on.
When the needle re aches the red area, the warn­
i ng l ight
li'J in the instrument cluster wi ll illumi­
nate ¢
page 20. Time to refuel!
The tota l tank capacity of your ve hicle is listed in
¢ page 256.
(D Note
Neve r run the tan k comp letely dry! An ir regu­
l a r supply of fuel can cause eng ine misfiring
and fuel could enter in to the exhaust system .
The cata lytic conver ter cou ld the n overheat
and be damaged.

9:::1: Engine oil pressure
The red engine oil pressure warning symbol re­
quires immediate service or repair . Driving with a
low-oil-pressure indication is likely to inflict se ­
vere damage to the engine.
• Turn off engine! Oil pressure too low
If the indicator lig ht t urns on and the message
appears, the oi l pressu re is too low.
~ P ull off the road.
~ Stop t he vehicle .
~ Turnoff the engine.
~ Check the engine oil level¢ page 207 .
~ If the engine oil leve l is too low, add engine oi l
¢
page 207 . Make sure that t he oil pressure
warning symbol. appears no longe r in the
display before you s ta rt driving ag ain.
~ If the engi ne oil leve l is cor rect and t he i ndic a­
tor lig ht still tur ns on, turn t he eng ine
off and
do not continue driving . Seek p ro fessional as ­
s istance .
(D Tips
- The engine oil pressure symbol. is not
an indicator for a low engine oil level. Do
not rely on it. Instead, check the oil level in
your engine at regular intervals, 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 service with ­
out 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 damage .
~ . Engine oil level
• WARNING: Please add oil immediately
If the indicator lig ht and the message ap pear,
a dd engine o il i mm edi ate ly
¢page 205.
;:; Ill Add oil, max XX XX l. You may cont. driv .
0
~ When the symbol II and driver message appea r, ,....,
~ add the amount of oi l appea ring in the display at
:;;: the next opportunity¢
page 205. ,....,
Instruments and ind icator lights
-L Eng ine cooling system
A malfunction in the engine cooling system must
be repaired as soon as possible .
• Turn off engine and check coolant level
If the indicator light turns on and the message
appea rs, the coo lant tempe rat ure is too high o r
t h e coo lant leve l is too low.
~ Pull off the ro ad.
~ Stop the vehicle.
~ Tur noff th e engine.
~ Check coolant leve l¢ page 209 .
~ Add coolant if necessary¢ page 210.
~ Continue dr iv ing only afte r the e ngine coolant
warni ng/ indicator light goes out .
~ Contact your authorized Audi dealer for assis-
t ance if necessa ry.
If the engi ne coo lant level is correct , then t he ra ­
dia to r f an may be the cause of t he mal func tion.
• Coolant temperature! Let engine run with
vehicle stationary
If the indicator lig ht tur ns on and the messa ge
appea rs, let the engine run a t idle for a few mi ­
nutes to c ool down.
A WARNING
-- If yo ur vehicle should break down for me ­
cha nica l o r ot her reasons, park at a safe dis­
t ance from mov ing t raff ic, t urn off t he e n­
g in e a nd turn on the haz ard warning lights
¢ p age S O, Em ergency fla she rs.
- N ever open t he hood if you see o r hear
s te am or coo lant esca p in g fr om th e engine
co mpartm ent - you ris k being scald ed . W ait
un til yo u can no longe r see or hear steam or
coo lant escapin g.
- T he engine co mpart ment of an y vehicl e is a
d anger ous are a. B efore y ou perfo rm any
wo rk in the eng ine com partment, t urn of
the eng ine a nd a llow it to cool. Follow t he
warn ing stickers
¢page 203.
(D Note
Do not con tinue dr iv in g if the . symbol i llu-
minates. The re is a malf u nction in the engine
IJi,,,
17

Instruments and indicator lights
(0) Worn brake pads
EiJ Brake pads!
If the warn ing light illum inates, immed iate ly
contact your authorized A ud i dealer o r qualified
wo rkshop to have all brake pads inspected. O n
USA models the wa rni ng lig ht
EiJ comes on to ­
gethe r wi th the war ning l igh t
1111 . Both sets of
b rake pads on an ax le m ust always be rep lace d at
the same time .
A WARNING
Driv ing with bad bra kes can ca use a co llision
and ser ious personal in jury.
- If the wa rning light
EiJ and the warning
light
11111 ) w ith the message Brake pads !
comes on in the instrument cl uster display,
i mmediately contact your author ized Audi
dealer or qualified workshop to have all
bra ke pads checked o r rep laced if necessary.
EPC Electronic power control
This warning/indicator light monitors the elec­
tronic power control .
-
The~ warni ng/indicator light (Electronic Powe r
Control) ill uminates when you switch the ign ition
on as a function check.
(D} Tips
If this wa rning/in dicator light ill uminates
wh ile you are driving, then there is a mal func­
tion in the eng ine electron ics. Have the ma l­
function corrected as soon as possib le by yo ur
author ized A udi dealer or a qualified repair fa­
cility .
0 Malfunction Indicator Lamp (MIL)
The Malfunc tion Ind ica tor Lam p (M IL) is part of
the On-Boa rd Di ag nosti c (O BD II) system. The
symbo l
('4 lights up whe n the ignition is swi tch ­
e d on and wi ll turn off after the engine has sta rt·
e d and has sett led at a constant idle speed . This
i n dicates that the MIL is working p roperly.
l ) - : USA mode ls o nly
20
The wa rning lig ht ill uminates w hen the re is a
malfunction in the engine electronic system.
Contact yo ur aut ho rized Aud i dea le r and have the
malfunction corrected.
An impro per ly closed fue l filler cap may also
ca use the MIL light to illuminate ¢
page 200 .
For more info rm ation c::> page 29 .
!?) Engine speed limitation
App lies to vehicles : wi th engine speed limitatio n
lfl Do not exceed max. engine speed of XXXX
rpm
The lfl symbo l illu min ates when the re is an en­
gine co ntro l ma lf u nct ion. The~ indica tor ligh t
in the instrument clus ter also illum ina tes . T he
engine spee d is limited to the s peed displayed in
the d river info rmation system. Keep in mind t hat
the engine speed w ill not exceed the value dis ­
played in the driver information system, for ex­
amp le w hen downshifting.
D rive to your authorized A udi dealer immediate ly
to have the mal function cor rected .
~~. Engine oil sensor
• Oil level! Sensor defective
If the symbol illuminates, contact your author ­
i zed Audi dealer and have the oil sensor inspect­
ed. Until yo u have this done, chec k the oi l level
each time you refuel just to be on the safe side
¢ page 207.
Bu Tank system
Ii] Please refuel
If the indicato r light turns on for the first time
and t he message appea rs, the re are about
2.1- 2.4 gallons (7 • 9 lite rs) of fuel left in the
ta nk. Time to refuel¢
page 200 .
Ii] Fuel tank system malfunct ion! Contact deal -
er ..,.

,....,
N
0
""' CX) ,....,
I.Cl U"I ,....,
I.Cl ,....,
vehicle, particularly the engine, and main­
taining its value. Even if the mileage driven
is low, the maximum period of one year
from one service to the next must not be ex­
ceeded.
@ Tips
The informat ion in the Service Rem inder re­
mains stored even when the vehicle battery 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 Diag­
nostic (OBD II) system .
The warning/indicator light illuminates when the
ignition is switched on and goes out after the en­
gine starts and the idle has stabilized. This indi­
cates that the MIL is working properly .
If the light does not go out after the engine is
started, or illuminates while you are driving, a malfunction may exist in the engine system.
If
the light illuminates, the catalytic converter
could be damaged.
Continue driving
with reduced power (avoiding
sustained high speeds and/or rapid accelera­
tions) and have the condition corrected. Contact
your authorized Audi dealer.
If the light illuminates, the electronic speed lim­iter may also be malfunctioning. For more infor­
mation
¢ page 29, Electronic speed limiter.
An improperly closed fuel filler cap may also
cause the MIL light to illuminate ¢
page 200.
Driver in forma tion system
On-Board Diagnostics
Fig. 17 Loca tion of Data Link Connector (DLC)
On-Board Diagnostics monitors the components
of your emission control system. Each monitored
component in your engine system has been as­
s igned a code. In case of a malfunction, the com­
ponent 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 system.
If the light illuminates after a refueling, stop the
vehicle and make sure the fuel f iller cap is prop­
erly closed
¢ page 200.
In order to make an accurate diagnosis, the stor­
ed data can only be displayed using special diag­
nostic equipment (gener ic scan tool for OBD).
In order to connect the special d iagnost ic equip­
ment, push the p lug into the Data L ink Connector
(DLC). The DLC is located to the right of the hood
release
¢ fig. 17.
Your authorized Audi dealer or qualified work­
shop can interpret the code and perform the nec­
essary repair.
.&, WARNING
Do not use the diagnostic connector for per­
sonal use. Incorrect usage can cause malfunc­
tions, which can increase the risk of a co lli­
sion!
Electronic speed limiter
Your vehicle may be factory equipped with tires
that are rated for a maximum speed of 130 mph (210 km/h). This is may be less than the maxi­
mum speed of your vehicle . To reduce the risk of .,.
29

Seat s and sto rage
-When driving with a roo f rack system,
changes to the center of gravity and wind
resistance can change the vehicle handling
and lead to a collision . A lways adapt your
dr iv ing and your speed to the current condi·
t ions .
{U) Note
- Your vehicle warranty does not cover any
damages to the vehicle caused by using roof
racks or mounting structures not approved
by Aud i for your vehicle . The same applies to
damage resulting from incorrect roof rack i nst allation .
- Always check the roof rack mount ings and
hardware befo re each trip and dur ing a tr ip
to make s ure everyt hing is securely tight­
ened.
If necessary, ret ighten the mo unt ings
and check the entire system from time to
time.
- After mounting a roo f rack system, or when
you transport objects on the roof of your ve­
hicle, the height of the veh icle is naturally
i nc reased. Be careful when driving under
l ow bridges or in parking garages for exam­
ple . This could cause damage to the load
and even the vehicle itself.
- Make sure that the open rear lid and the
su nroof do not come into contact with ob·
j ects on the roof .
Loading the roof rack
Always distribute loads evenly. Make sure any ­
thing on the roof rack is securely tied down .
"'Always distribute the loads on the roof rack
evenly .
"' Always attach items to the roof rack securely
before you dr ive off .
The max imum perm issible roo f weight is
2 00 lb
( 90 kg ).
The roof weight is the total of the
weight of the roof rack, the attachme nts and the
cargo you are carrying . You must also not exceed
the maximum load weight fo r the roof rack yo u
a re using.
68
When using a roof rack system wh ich has a lower
l oad carrying capacity, you must not use up the
total max imum permissib le load carry ing capac i­
ty specified above. Instead, you should load the
roof rack sys tem only to the maximum capacity
specified by the manufacturer of the roof rack
system.
A WARNING
Weak, damaged or improper straps used to
secure items to the roof rack can fail du ring
hard brak ing or in a collision and cause seri­
ous persona l injury .
- Ma ke sure the roof rack is i nstalled exactly
as spe cified above
~ page 67 .
-Always use suitable mo unt ing straps fo r se·
cur ing items to the roof ra ck to help preven t
items from sh ifting or flying forward .
- Items on the roof rack must a lways be se·
cure ly mounte d.
- The use of a roof rack can negative ly affect
the way a vehicle handles . Cargo that is
large, heavy, b ulk y, long or flat w ill have a
greater negative influence on the vehicle's
aerodynamics, center of grav ity and overa ll
handling . Always drive slowly, avoid sudden
braking and maneuvers when transporting
cargo on the roof of your vehicle .
- Never exceed the maximum permissib le
load carry ing capacity of the roof of your ve­
hicle, the perm iss ible axle weights and the
perm iss ible total we ight of your vehicle
~ page 255, Weights.
(D Note
Make sure that the opened rear lid does not
come in contact with the cargo on the roof .
@ For the sake of the environment
As a result of the increased wind resistance
created by a roof rack, your vehicle is using
fuel unnecessarily . So remove the roof rack
after using it .
-

Warm and cold
Warm and cold
Climate control system
Description
The climate control system warms, cools and
adds humidity to the air in the veh icle inter ior. It
is the most effective when the windows and sun ­
roof are closed. If there is a build-up of heat in­
side the vehicle, ventilation can help to speed up
the cooling process.
I n all heating mode functions except
defrost, the
b lower only switches to a higher speed once the
engine coolant has reached a certain tempera­
ture .
Condensat ion from the cooling system can drip
and form a puddle of water under the veh icle.
This is normal and does not mean there is a leak.
P ollutant filt er
The pol lutant filte r removes pollutants such as
dust and pollen from the a ir.
The air pollutants filter must be changed at the intervals specif ied in your Warranty
& Mainte­
nance booklet, so that the a ir cond it ione r can
properly work.
If you drive your vehicle in an area with high air pollut ion, the filter may need to be changed
more frequently than specified i n your Aud i War­
ranty
& Maintenance booklet. If in doubt, ask
your author ized Audi Service Advisor for advice.
Ke y cod ed setting s
The climate control settings are automatically
stored and assigned to the remote control key
that is in use .
.8, WARNING
Reduced visib ility is dangerous and can ca use
accidents.
- For safe dr iv ing it is very impo rtan t that all
windows be free of ice, snow and condensa­
t ion .
76
- Complete ly familiarize yourself with the
proper use and function of the heating and
ventilation system and espec ially how to de­
fog and defrost the wi ndows .
- Never use the windshield wiper/washer sys­
tem in freezing weather until you have
warmed the windshield first, using the heat­ ing and vent ilation system. The washer solu­
tion may freeze on the windshield and re­
duce visibi lity.
(D Note
- If you suspect that the air conditioner has
been damaged, sw itch the system off to
avoid further damage and have it inspected
by a q ualified dealership.
- Repa irs to the Aud i air cond itioner requ ire
special techn ica l know ledge and spec ial
tools. Contact an a uthorized Audi dealer fo r
assistance.
@ For the sake of the environment
By reduc ing the amo unt of fuel you use, you
also reduce the amount of pollutants emitted
into the a ir.
(D Tips
- Keep t he a ir intake slots (in front of the
windshield) free from ice, snow and debr is
in orde r to maintain the prope r funct ion of
the climate control system .
- The energy management sys tem may sw itch
the seat heating* o r rea r window defroster
off temporarily. These systems are available
again as soon as the energy balance has
been restored.
- Air escapes through vents under the rear
window. When placing items of clothing on
the luggage compartment cover, ensure
that the openings are not covered.

Fuel and Refueling
Gasoline additives
A major concern among many auto manufactur­
ers is carbon deposit build-up ca used by the type
of gasoline you use.
Although gasoline grades d iffer from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on v ital engine
parts, such as fuel injectors and intake valves. Al­
though most gasoline brands include additives to
keep engine and fuel systems clean, they are not
equally effective.
Audi recommends using TOP TIER Detergent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline, please go to the official website (www.toptiergas.com).
After an extended period of using inadequate
fue ls, built-up carbon depos its can rob your en­
g ine of peak performance.
CD Note
- Damage or malfunction due to poor fuel
quality is not covered by the Audi New Vehi­
cle Limited Warranty .
- Do not add aftermarket fuel additive prod­
ucts to yo ur fuel tank.
Refueling
Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel f iller flap .
If the power locking system should fail, you can
still open the flap manually -for detailed instruc­
tions see
c> page 202.
You can find the fuel tank capacity of your vehicle
in
c> page 256 .
The label on the inside of the fuel filler flap tells
you the correct fue l for your vehicle. For more in­
formation about fuel specifications, see
<=>page 198.
Your vehicle fuel tank has an on-board refuelling
vapor recovery system. This feature he lps to pre­
vent fuel vapors from escaping from the tank and
200
polluting the environment whi le you refuel your
vehicle. In order to fill the tank proper ly while
protecting the env ironment, please follow th is
refueling procedure carefully.
A WARNING
Under normal operating conditions, never car­
ry additional fuel containers in your car. Gas
can isters and other containers used to trans­
port fue l can be dangerous. Such containers,
full or empty, may leak and could cause a fire
in a col lision.
If you must transport fuel to
use for your lawn mower, snow blower, etc.,
be very careful and always observe local and
state laws regarding the use, transportation
and storage of such fuel containers. Make cer­
tain the container meets industry standards (ANSI/ASTM F852 -86).
CD Note
Never drive your vehicle until the fuel tank is
complete ly empty. The irregular supply of
fuel can cause misfiring. Gasoline could enter the exhaust system and damage the catalytic
converte r.
Refuelling
Fig. 175 R ight rea r vehicle side: Open ing the fuel filler flap
Fig. 176 Fuel filler flap w ith attac hed fuel cap

..... N
0 ::..:: co ..... ..... When activating the central locking, the fuel fill­
er flap is automatically unlocked or locked. Re­
fue l the vehicle with the ignit ion turned
off.
T a king the fuel cap off
.,. Turn off the ignition.
.,. Press the left side of the fue l filler flap to open
it
c:> fig . 175 -arrow -.
.,. Unscrew fue l cap counter -clockwise and hang it
on the fue l filler flap
c:> fig. 176.
Refuelling proc edure
.,. Inse rt the fue l nozzle from the gasoline pump
into the fuel filler neck as far as it will go .
.,. Se lect a medium refuelling rate so that the
nozzle switches off automatically when the
tank is full.
Putting the fuel cap back on
.,. After filling your tank, tw ist the f uel cap clock-
wise as far as it wi ll go .
.,. Close the fuel filler flap.
To avoid fuel spill ing o r evaporating from the f uel
tank always close fuel cap proper ly and com ­
pletely.
A WARNING
Improper refueling or handling of fuel can
cause fire, explosion and severe b urns.
-
- Fuel is highly flammable and can cause se­
vere burns and other injur ies .
- Failure to shut the engine off wh ile refuel ­
ing and/or to insert the pump nozz le fully
into the fuel filler neck could ca use fue l to
spray out of filler neck or to ove rflow. Fuel
spray and overflowing fue l can cause a fire.
- Never use a cellular telephone wh ile refuel­
ing. The electromagnetic radiation can
cause spa rks that can ignite f uel vapors and
cause a fire.
- Never get back into your vehicle while refu­
eling. If in except ional circumstances you
must get back in your vehicle while refuel­
ing, make certain that you close the door
and touch meta l to discha rge static ele ctric­
ity befo re touching the filler noz zle ag ain.
Fuel and R efueling
Stat ic elect ricity can cause sparks that can
ignite fue l vapors released during refueling.
- Never smo ke or have an open flame any ­
where in or near your vehicle when ref ueling
or filling a portable fuel container .
- For your safety, we strongly recommend
that you do not trave l with a po rtable fuel
container in your veh icle. The container, fu ll
or empty may leak and co uld cause a fire,
especially in a crash.
- If, under except ional circumstances, you
m ust transport a portable fuel container,
p lease observe the following:
- Never fill a portab le fue l conta iner while it
is anywhere in or on the vehicle (for exam­
ple, in the l uggage compa rtment, o r on
the trunk). Static electricity can build up
while filling and can ignite fuel vapors caus ing a f ire .
-Always place a portab le fue l conta iner on
the ground before fi lling .
-A lways keep the f iller nozzle comp lete ly
inside the portable container before and
during f il li ng.
- If filling a portable conta iner made of
metal, the filler nozz le must always be in
contact with the container . This will he lp
prevent stat ic elec trici ty from discharging
and ca use a fire.
- Never spill fue l inside the vehicle o r lug­
gage compartment. F uel vapors a re highly
flammable.
- Always observe loca l and state/prov incial
laws rega rding the use, storage a nd trans­
po rtation of fuel contai ners.
- Make ce rtain the f uel con tainer mee ts i n­
dust ry standards (A NSI/ AS TM F852 -86).
(D Note
If any fuel has sp illed onto the car, it should
be removed immed iately to p revent damage
to the pa int.
@) For the sake of the environment
As soon as the correctly operated nozzle
switches off automatically for the first time,
201