2015 AUDI S6 fuel cap

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Safet y fir st . . . . . . . . . . . . . . . . . . . . 126
Driving Safely . . . . . . . . . . . . . . . . . 126
General notes . . . . . . . . . . . . . . . . . . . . 126
Proper occupant seating posit ions . . . 127
Driver and passenger side footwell . . . 131
Pedalarea .. .. .............. ... .. 131
Stowing luggage . . . . . . . . . . . . . . . . . 132
R eport ing Safety Defects . . . . . . . . . . . 134
Safety belts ... .. ...... .. .. .. . .
General notes ............... .. .. .
Why safety bel ts? ........ .... .. . .
Safety belts ............. .. .. .. . .
Safety belt p re tens ioners .. .. .. .. . .
Airbag system ........... .. .. . .
Impor tant th ings to know .. .. .. .. . .
Fr ont airbags ... ...... ... .. .. .. . .
M onitoring the Advanced Airbag
System .... .. .... .. .... ... .. .. . .
Knee airbags ............. .... .. . .
Side airbags .. ........... .. .. .. . .
Side curta in a irbags ........ . .... . .
Ch ild Safety ............... .. . .
Important things to know .. .. .. .. . .
C hi ld safety seats ............ .... .
Install ing a chi ld safety seat .. .. ... .
L A TC H L ower ancho rages and tethe rs
fo r ch ild ren . ............. .... .. . .
Addit io nal Informa tion
Audi pre sense .......... .. .. . .
Pr even ta ti ve passe nger p rotec tion
Vehicle operation ....... .. .. . .
Intelligent technology .. .. .. . .
N ot ice about da ta re corded by the
E vent Data Recorder and vehi cle
control mod ules ... .... ... .. .. .. . .
Elect ronic Stabilization Control (ESC) . 136
136
137
139
1
4 3
145
1 4 5
1 4 9
157
162 164
167
171
171
177
182
185
189
190
190
19 2
19 2
192
193
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 195
Electromechanical power assist,
dynamic steering . . . . . . . . . . . . . . . . . 197
Driving w ith your quattro . . . . . . . . . . 197
E ne rgy management . . . . . . . . . . . . . . 198
Table of contents 3
Driving and environment . . . . .
200
T he first 1,000 miles (1 ,500 km) and
afterwa rds . . . . . . . . . . . . . . . . . . . . . . 200
Avoid damaging the vehicle. . . . . . . . . 201 Driving through water on roads . . . . . 201
Catalytic co nverter . . . . . . . . . . . . . . . . 201
D iesel pa rticulate filter . . . . . . . . . . . . 202
S hu tting down vehi cle . . . . . . . . . . . . . 202
Operate your vehicle e conomically and
min imi ze poll ution . . . . . . . . . . . . . . . . 202
Trailer towing . . . . . . . . . . . . . . . . . 205
Dr iving wit h a trailer . . . . . . . . . . . . . . 205
T ra ile r tow ing t ips . . . . . . . . . . . . . . . . 207
Vehicle care . . . . . . . . . . . . . . . . . . . 209
Vehicle care and cleaning . . . . . 209
Genera l informa tion . . . . . . . . . . . . . . 209
Car was hes . . . . . . . . . . . . . . . . . . . . . . 209
Cleaning and care information . . . . . . 210
Fuel supply and filling your
fuel tank ... .. .... . ... ...... ... .
214
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . 214
Diesel fuel . . . . . . . . . . . . . . . . . . . . . . 215
Fuel tank.. .. .. .. .. .. ........... . 216
Se lective cata lytic reduction . . . . . . . . 218
Checking and filling . . . . . . . . . . . 222
Engine hood . . . . . . . . . . . . . . . . . . . . . 222
En gine compartment . . . . . . . . . . . . . . 224
E ngine o il . . . . . . . . . . . . . . . . . . . . . . . 224
En gine cooling system . . . . . . . . . . . . . 228
Br ake fluid . . . . . . . . . . . . . . . . . . . . . . 231
Battery . . . . . . . . . . . . . . . . . . . . . . . . . 232
Windshie ld/headlight * washer
co ntainer . . . . . . . . . . . . . . . . . . . . . . . 235
Tires and wheels . . . . . . . . . . . . . . 237
T ires . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Tire pressure mo nitoring system 267
Do-it-yourself service . . . . . . . . . 270
What do I do now? . . . . . . . . . . . . 270
Tr unk escape handle . . . . . . . . . . . . . . 270
Emergency warn ing triangle . . . . . . . . 270
Vehicle tool kit . . . . . . . . . . . . . . . . . . . 271
Chang ing a wheel . . . . . . . . . . . . . . . . . 272
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12 Instrum ent s and w arn ing /indic ato r light s
-Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment.
You could burn yourself . Let the engine
cool off first until you can no longer see
o r hear steam or coo lant escaping.
@ Note
- Mounting additional lights or accessories
i n front of the a ir inlets reduces the cool­
i ng effect of the rad iator . At h igh outside
temperatures or high eng ine load, the
engine could overheat.
- The front spo iler has been designed to
proper ly distribute the cooling air when
t h e ve hicle is moving.
If the spoiler is
dam aged, th is co uld red uce the cooling
effect and the engine co uld then over­
heat . Ask your authorized Audi dea ler for
assistance .
Tachometer (engine rev counter)
The tachometer indicates the engine RPM
(revolutions per minutes).
If engine RP M drops be low 1,500, yo u should
downshift to the next lower gear. The red a rea
at the end of the sca le indicates maximum
perm iss ib le engine RPM after the break-in pe­
riod. Before reaching this area, move these­
lector lever to position D/S (Drive) or ease
your foot off the accelerator pedal.
(D Note
The tachometer needle should on ly br iefly
be in the red zone: you could damage your
engine! The beginn ing of the red zone var­
ies depending on the engine .
@ For the sake of the environment
Upshifting early saves fuel and reduces en­
gine noise.
Fuel gauge
The fuel gauge only works when the ignition is
on .
If the fuel level d rops below 2 . 6 ga llons (10 liters), the bottom LED turns red and the
indicator light
ll'J turns on r=> page 22. The
bottom LED blinks red when the fuel level is
very low.
T he possible range based on the current fuel
level is shown in tab@r=>
page 24, fig . 4 .
(D Note
Never run the tank completely dry. An ir ­
r egular supply of f uel can cause engine
misfiring and fuel could enter the ex ha ust
system . The catalytic converter could then
overheat and be damaged.
Warning/indicator Lights
Description
The ind icator lights in the instrument cluster
blink or turn on. They indicate funct ions or
malfunctions
r::!> ,& .
Messages may appear with some indicato r
lights. A warning signal will sound at the
same t ime. The indicator lights and messages
in the center of the displays may be rep laced
by other d isplays . To show them again, select
the tab for ind icator lights and messages us­
i ng the multifunction steering wheel
r::!> page 24. If t here are several malfunc­
t ions, you can display them one at a time us­
ing the thumbwheel.
Some indicato rs lights in the d isplay can turn
on in severa l co lors.
A WARNING
- F ailure to heed w arning l igh ts and other
important vehicle in forma tion may res ult
in ser io us personal inj ury or vehicle dam­
age .
- Whenever stalled or stopped for repair, move the vehicle a safe d istance off the
road, stop the engine, and turn on the
emergency flasher
r::!> page 44.
- The engine compartment of any motor
veh icle is a potentially hazardous area.
Before you chec k anything in the engine

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Instrument s and warnin g/indic ator ligh ts 21
@ Tips
If this warning/indicator light illuminates
while you are dr iving, then there is a mal­
function in the engine electron ics. Have
the malfunction corrected as soon as pos­
sible by your authorized Aud i dealer or
qualified repair fac ility.
W Glow plug system
Appl ies to vehicles: with diesel e ngin e
The control light illuminates when the glow
plug system is active.
If the IJ indicator light illum inates, the glow
plug system is active. You should start the en­
gine immediately after the indicator light
switches off. The indicator light only illumi­ nates for approx imately 1 second if the en­
g ine is wa rm or if the outside temperature is
above 46 QF (8 Q().
@ Tips
- If the glow plug indicator light illumi­
nates while driving, there is an engine
control malfunction. The engine shou ld
be checked immediately.
- If the indicato r light does not illum inate
at all when switching the ignition on,
there may be a malfunction in the glow pl ug system . The engine should be
checked.
a Malfunction Indicator Lamp (MIL)
The Malfunction Ind icator Lamp (MIL) is part
of the On-Board Diagnostic (OBD II) system.
The symbol
(4 lights up when the ignit ion is
sw itched on and w ill turn off after the engine
has started and has sett led at a constant idle
speed. This ind icates that the M IL is working
p roperly.
The warning light illuminates when there is a
malfunct ion in the engine e lectronic system.
Contact your author ized Audi dealer and have
the ma lfunction co rrec ted.
An improperly closed fuel filler cap may also
cause the MI L light to illum inate
¢ page 216.
For more information ¢ page 29.
_, Diesel particulate filter clogged
Appl ies to vehicles: wi th diese l en gine a nd diesel particu­
late filter
II Pa rti cul ate filter : S ys tem f ault See own ­
er 's manual
When the II symbo l illuminates, you can a l­
te r you r d riving style to ass ist the filter se lf­
cl ean ing process. Drive for approximately 15
minutes with the se lector lever in the S posi­
tion at a minimum speed of 37 mph (60 km/ h) and an engine speed of approximately
2,000 RPM. The temperat ure increase that
will result from this can burn off the soot in
the fil ter. The symbol will switch off when the
cleaning is successful. After a successful
clean ing, there is no need to bring the car to
an authorized dea ler or qualified workshop
be cause th is is part of no rma l vehicle opera ­
t ion.
If the symbol II does not switch off, see your
authorized dea ler o r other qualified workshop
to have the p rob lem cor rected.
For more information on the diesel part icu­
late filter, refer to ¢
page 202.
A WARNING
Always adapt your speed to the current
wea ther, road and traffi c conditions. You
should never disobey traffic laws in order
to fo llow driving recommendations .
!7 Engine speed limitation
Applies to vehicles : wi th engine speed limitatio n
(m Engine speed ma ximum X XXX RPM
-
The eng ine speed is automatically limited to
the speed d isplayed in the driver info rmation
system. This pro te cts the engine from over ­
heating.
T he eng ine speed limitation deactivates once
the engine is no longer in the cri tical tempera­
tu re range and yo u have re leased the accelera-
tor pedal once.
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Instrument s and warning /indicator lights 29
Adjusting the height
The height of the display can be a djus ted to
t he individual driver .
.. Make sure you a re seated cor rect ly
<=>page 127.
.. Turn the knob~ to adjust the displ ay .
Settings in the MMI
.. Se lect: I CARI funct ion button > ( Car )* s ys­
tems
control button > D river Assist > Head­
up Display > Head-up Display content
or
Di splay brightne ss .
Display content
In the MMI, you ca n specify which information
should be displayed :
- Cruise contro l system*
- Navigatio n information*
- A udi adaptive cruise control *
- Audi a ct ive lane assist*
- Night vis ion assistant*
The speed display and some of the red indica­ tor lights cannot be hidden in the MMI.
Display brightness
You can ad just the display brightness in t he
MMI. The display brightness decreases auto­
mat ica lly as the amount of light decreases.
The basic leve l of brightness is adjusted with
the ins trumen t illum ina tion ¢
page 46 .
(D Note
To prevent sc ratches on t he g lass covering
the Head-up Disp lay, do not place any ob­
jects in the proj ection opening.
(D Tips
- Sung lasses w ith polar izat ion fi lters an d
unfavorable lighting condit ions can af­
fect the display.
- A specia l w indshield is needed for the
Head-up Display funct io n.
- Fo r information on cleaning, refer to
¢ table on page 211.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL )
The Ma lfunction Indicator Lamp ( MIL ) ¢'4 in
the instr ument cluster is part of the On-Board
Diagnostic (OBD II) system .
T he wa rni ng/indicator light ill uminates when
the ignit io n is switched on and goes out after
the engine sta rts and the id le has stab ilized.
This indicates that the MIL is working proper­
ly .
If the light does not go out afte r th e en gine
is started, or illuminates while you are dr iv­
ing, a mal function may exist in the engine sys ­
tem.
If the lig ht illum inates, the catalyt ic con­
verter could be damaged .
Contin ue driving
with reduced power (avoid­
ing s ustained high speeds and/or rapid accel­
erations) and have the cond ition corrected.
Contact your aut horized Audi dea ler.
If the light illuminates, the e lectronic speed
limiter 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 216.
On-Board Diagnostics
Fig. 1 6 Location o f Data Li nk Co nnector (D LC)
On-Board Diagnostics monitors the com po­
nents of your emission cont ro l system. Each
monitored component in your engine system
Iii>-

30 Instruments and warning /indicator lights
has been assigned a code. In case of a ma l­
function, the component will be identified
and the fault stored as a code in the contro l
module memory.
The MIL light may a lso illuminate if there is a
leak in the on-board fue l vapor recovery sys­
tem .
If the light illuminates after a refue lling,
stop the vehicle and make sure the fuel filler
cap is properly closed ¢
page 216.
In order to make an accurate diagnosis, the
stored data can only be displayed using spe­
cial diagnostic equipment (generic scan tool
for OBD) .
In order to connect the special diagnostic
equipment, push the plug into the Data L ink
Connector (DLC). The DLC is located to the
right of the hood release¢
fig. 16.
Your authorized Audi dealer or a qualified
service station can interpret the code and per­
form the necessary repair .
A WARNING
Do not use the diagnostic connector for
personal use . Incorrect usage can cause
malfunctions, which can increase the risk
of a coll ision!
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). This is less than the
maximum speed of you r vehicle. To reduce the
risk of sudden tire failure and loss of control if
the vehicle is operated at excessive speeds,
your veh icle also has an electronic speed limit­
er. The electronic speed limiter prevents your
vehicle from go ing faster than the tire speed
rating. For more informat ion ¢
page 257 .
If the engine control unit receives faulty vehi­
cle road speed s ignals, the Malfunction Indi­
cator Lamp (MIU
¢'4 will illuminate. If this
occurs, contact the nearest authorized Aud i
dealer for assistance. S models
Your
vehicle's top speed is elect ron icall y limit­
ed to 155 mph (250 km/h).
If the engine control unit receives faulty veh i­
cle roadspeed signals, the Malfunction Indica­
tor Lam p (MIL)
¢'4 will illuminate . If this oc­
curs, contact the nearest authorized Audi
dealer for assistance.
_& WARNING
-= -
Always observe the posted speed limits
and adjust your speed to suit prevailing
road, traffic and weather cond itions. Never
drive your vehicle faster than the maxi­
mum speed rating of the tires installed .

62 Seat s a nd s tor ag e
If luggage or cargo is to be carried on the
roof, you must observe the follow ing:
- Only use roof racks approved for yo ur vehi­
cle. These approved roof racks are the basis
for a complete roof rack system . Additional
attachments or carrier systems are needed
to transport luggage and sports equipment.
We recommend using roof racks from the
Audi original accessories program.
- When installing the roof rack, make sure it is only moun ted on the designated locations
on the
roof <=> fig. 64.
- We recommend that you keep the installa­
tion instructions for your roof rack system
together with your Owner 's literature in the
vehicle .
When sh ould the roo f ra ck be remo ved ?
-Before going through an automatic car wash
(it is best to ask the car wash operator for
advice).
- When not in use, to reduce fuel consump­ tion, wind no ise and to guard against theft .
A WARNING
-Use of an unapproved roof rack or incor­
rect mount ing of an approved roof rack
can cause the roof rack or the items at­
tached to it to fa ll off the roof onto the
road .
- Objects fall ing from the roof of a vehicle
can cause a crash and persona l injury.
- Only mount the roof rack on the desig­
nated locations o n the roof <=>
fig. 64.
-The roof rack system must be installed
exactly according to the instructions pro­
vided.
- When driving w ith a roof rack system,
changes to the center of g ravity and wind
resistance ca n change the veh icle han­
dling and lead to a collision . A lways
adapt yo ur driving and you r speed to the
c u rrent conditions.
@ Note
- Your vehi cle warranty does not cover any
damages to the veh icle caused by using roof
racks or mounting structures not
approved by Audi for your vehicle . The
same app lies to damage resulting from
incorrect roof rack installation.
- Always check the roof rack mountings
and hardware before each trip and dur­
ing a trip to make sure everyth ing is se­
curely tightened . If necessary, ret ighten
the mountings and check the entire sys­
tem from time to time .
- After mount ing a roof rack system, or
when you t ransport objects on the roof
of your vehicle, the heig ht of the veh icle
is natu rally increased. Be careful when
dr iving under low bridges or in par king
garages for example . This cou ld cause
damage to the load and eve n the vehicle
itself .
- Make sure the open rear lid and the sun­
roof* do not come into contact with the
roof rack.
Loading the roof rack
Always distribute loads evenly. Make sure
anything on the roof rack is secur ely tied
down.
.. Always distribute the loads on the roof rack
even ly .
.. Always attach items to the roof rack s ecurely
before you drive off.
The maximum permissible roof weight is
2 20 lb (100 kg ). The roof weight is the total
of the weight of the roof rack, the attach­
ments and the cargo you are carrying. You
must also not exceed the max imum load
weight for the roof rack you a re using.
When using a roof rack system which has a
lower load carrying capacity, you must not use
up the total maximum permissible load carry­
ing capacity specified above . Instead, you
shou ld load the roof rack system only to the
maximum capacity specified by the manufac-
tu rer of the roof rack system. ..,.

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_& WARNING
Weak, damaged or improper straps used
to secure items to the roof rack can fail
during hard braking or in a collision and
cause serious personal injury .
- Make sure the roof rack is installed exact ­
ly as specified above
c::;, page 61 .
-Always use suitable mounting straps for
securing items to the roof rack to help
prevent items from shift ing or fly ing for­
ward.
- Items on the roof rack must always be
securely mounted .
- The use of a roof rack can negatively af­
fect the way a vehicle handles . Cargo
that is large, heavy, bulky, long o r flat
will have a greater negative inf luence on
the vehicle 's aerodynamics, center of
gravity and overall handling . Always
drive slowly, avoid sudden braking and
maneuvers when transporting cargo on
the roof of your vehicle.
- Never exceed the maximum permissible
load carrying capacity of the roof of your
vehicle, the perm issible axle weights and
the permiss ible total weight of your vehi­
cle
c::;, page 289, Weights .
@ For the sake of the environment
As a result of the increased wind resist­
ance created by a roof rack, your veh icle is
using fuel unnecessarily. So remove the
roof rack after using it.
S ea ts a nd s to rage 63
Luggage compartment
Loading luggage compartment
Luggage i tems must be stowed securely.
Fig. 65 P la ce h eavy o bject s as far forward a s possible .
Note the following to preserve the vehicle's
good handling charac teristics.
.., Distribute the load as evenly a s possible.
.., Place heavy objects as far forward as poss i­
ble
c::;, f ig . 65.
.., Secure luggage items with the cargo net* or
w ith non-elastic retain ing straps to the tie­
down rings*
c::;, page 65.
A WARNING
- Loose objects in the l uggage compart­
ment can slide about suddenly and a lter
the vehicle's handling characteristics.
- Loose objects in the passenger compart­
ment can fly forward during abr upt ma­
neuvers or accidents and injure occu­
pants .
- Always store objects in the luggage com­
partment and use suitable straps, partic­
ularly with heavy objects .
-
-When you transport heavy objects, al­
ways remember that a change in the cen ­
ter of gravity may result in a change in
the vehicle's handling characteristics.
- Follow all warnings
c::;, page 126, Driving
Safely .
(D Tips
The tire pressure must be ad justed to the
load -see the t ire pressure sticker located
on the dr iver's side B -pillar .

216 Fuel supply and filling your fuel tank
Such damage will not be covered by your
New Vehicle Limited Warranty.
- If you p ut any amount of incorrect fuel in
the fue l tank, do not start the engi ne un­
der any circumstances. Immediately con­
tact the nearest authorized Audi dealer
or authorized Audi Service Facility for as­
s istance. These fuels contain substances
that can severely damage the fuel sys ­
tem and the engine if the engine is start­ ed.
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel filler flap.
If the power locking system should fa il, you
can st ill open the flap manually -for detailed
instructions see
c;, page 218.
You can find the fue l tank capacity of your ve­
hicle in
c;, page 290.
The label on the inside of the fue l filler flap
tells you the cor rect fuel for your vehicle . Fo r
more information about fuel specifications,
see
c;, page 214.
Your veh icle fuel tank has an onboard refue l­
ling vapor recovery system. This feature helps
to prevent fuel vapors from escaping from the
tank and polluting the environment while you refuel your vehicle. In order to fill the tank
properly whi le protecting the env ironment,
please follow this refueling procedure careful­
ly .
A WARNING
Under normal operating conditions, neve r
carry additiona l fuel containers in you r car.
Gas canisters and other containers used to
transport fuel can be dangerous. Such con­
tainers, full or empty, may leak and could
cause a fire in a collision. If you must
transport fue l to use for yo ur lawn mower,
snow blower, etc., be very careful and al­
ways observe local and state laws regard­
ing the use, transportation and storage of such
fuel containers . Make certain the con­
tainer meets industry standards (ANSI/
ASTM F852 -86).
(D Note
Never drive your vehicle until the fue l tank
is completely empty. The irregu lar supply
of fue l can cause misfiring. Gasoline could
enter the exhaust system and damage the
catalytic converter .
Refuelling
Fig. 179 Right rea r veh icle side: Opening the fuel filler
flap
Fig . 180 Fu el filler flap with attac hed fuel cap
When act ivat ing the central locking, the fuel
filler flap is automatically unlocked or locked.
Refuel the vehicle with the ignition switched
off.
Taking the fuel cap off
" Press the left side of the fuel filler flap to
open it
c;, fig. 179 -arrow -.
" Unscrew fuel filler cap counter-clockwise
and hang it on the fue l filler flap
c;, fig. 180.
"Check the label on the inside of the fuel fill­
er f lap to determine if the veh icle must be
fue led with gasoline or diesel fuel.
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