2015 AUDI S6 fuel cap

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Refuelling procedure
"'Insert the fuel nozz le from the gasoline
pump into the fue l filler neck as far as it will
go.
"' Se lect a medium refuelling rate so that the
noz zle switches off automatically when the
tank is full.
Putting the fuel cap back on
"'After filling your tank, twist the fuel fi ller
cap clockwise as far as it will go.
"' Close the fuel filler flap .
To avoid fuel spi lling or evaporating from the
fuel tank always close fuel fi ller cap properly
and comp letely. An improperly closed fuel fill­
er cap may also cause the MIL lamp¢
page 29
to come on.
A WARNING
Improper refueling or handling of fuel can
cause fire, explosion and severe burns .
- Fuel is highly flammable and can cause
severe burns and other injuries .
- Failure to shut the eng ine off while refu­
eling and/or to insert the pump nozzle
fully into the fuel f iller neck could cause
fuel to spray out of filler neck or to over­
flow. Fuel spray and ove rflow ing fuel can
cause a fire.
- Never use a cellular telephone while re­
fueling. The elect romagnetic radiation
can cause sparks that can ignite fue l va­
pors and cause a fire.
- Never get back into you r vehicle while re­
fueling. If in exceptiona l circumstances
yo u must get back in your vehicle wh ile
refueling, make certain that you close
the door and touch metal to discharge
static electricity before touching the fill­
er nozzle again. Static electricity can
cause sparks that can ignite fuel vapors
released during refueling.
- Never smoke or have an open flame any­
where in or near you r vehicle when refu­
eling or filling a portable fuel container .
- For your safety, we strongly recommend
that you do not travel w ith a portable
Fuel supply and filling your fuel tank 217
fuel container in your vehicle. The con­
tainer, full or empty may leak and could
cause a fire, especially in a crash.
- If, under exceptional circumstances, you
must transport a portable fuel container,
please observe the following:
- Never fill a portable fuel container
while it is anywhere in or on the vehicle
(for example, in the luggage compart­
ment, or on the trunk) . Static electrici­
ty can build up while filling and can ig­
nite fuel vapors causing a fire.
- Always place a portab le fue l conta iner
on the ground before fi lling.
- Always keep the filler nozzle complete­
l y inside the portable container before
and during filling.
- If filling a portab le container made of
metal, the fi ller nozzle must always be
i n contact with the conta iner. This will
help prevent static electric ity from dis­
charging and cause a fire .
- Never spill fuel inside the vehicle or
luggage compartment. Fuel vapors are
highly flammable .
- Always observe local and state/provin­
cial laws regarding the use, storage
and transportation of fuel containers .
- Make certain the fuel container meets
industry standards (ANSI/ ASTM
F8S2 -86) .
(D Note
If any fuel has spilled onto the car, it
should be removed immediately to prevent
damage to the paint .
@) For the sake of the environment
As soon as the correctly operated nozzle
switches off automatically for the first
time, the tank is full. Do not try to add
more fuel because fuel may spill out . In
addition , the expansion space in the fuel
tank will be filled -causing the fuel to
overflow when it becomes warm and pol­
l ute the environment . •
•

218 Fuel supply and filling your fuel tank
@ Tips
-Running your engine while refuelling
may cause vapors to escape or even
cause fue l to spill out of the tank. This
would then shut off the fuel nozzle be­
fore the tank is full.
- Do not refuel your vehicle w ith the igni­
tion switched on. The fuel gauge may
otherwise not indicate the correct fuel
level after refuelling.
- Diesel vehicles* are equipped with a die­
sel m isfueling protector. It allows the
vehicle to be fueled only w ith a diesel
fuel pump nozzle. A worn or damaged
nozzle or a nozzle that is too small may
not be able to open the diesel misfueling
protector . If this is the case, try turning
the nozz le before inserting it in the fue l
filler neck, use a different fuel pump or see your authorized Audi dealer or au­
thorized repair facility for assistance.
- The fuel filler flap of your vehicle is not
locked when you lock the vehicle from
the inside.
Fuel filler flap emergency release
You can open the fuel filler flap by hand if the
power locking system should fail.
Fig. 181 Luggage compartment: opening the side t rim
Fig. 182 R ight sid e tr im panel in t he luggage compart ·
men t: emergency release mechanism
Opening the side trim
.. To remove the right side trim, first remove
the retainer from the mounts ¢
fig. 181.
.. Turn both locking mechanisms 90° to the
left using a coin or a similar object and re­
move the locking mechanisms.
.. Tilt the retainer upward and pull the trim
out. Lay the trim down on its side, because
there is an electr ical wire on the back.
Fuel filler door emergency release
The emergency release mechanism is located
behind the right side trim panel in the lug­
gage compartment .
.. Loosen the loop¢
fig. 182 from the retainer
and then pull on the loop carefully
¢ (D .
.. Press on the left side of the fuel filler door
to open
¢ page 216, fig. 179 .
(D Note
Only pull on the loop until you feel resist­
ance. You w ill not hear it release. Other­
wise you could damage the emergency re­
lease mechanism.
Selective catalytic
reduction
General information
Applies to vehicles : wit h diese l eng ine
On vehicles with selective catalytic reduction,
an urea solution (AdBlue) is injected into the
exhaust system before a nitrogen oxide cata­
lytic converter to reduce nitrogen emissions. ..,.

220 Fuel supply and filling your fuel tank
This message appears if the system detects it
was filled incorrect ly. Drive immediate ly to
the nearest qualified workshop to have the malfunction repaired. Otherwise you will not
be able to start the engine again once you
stop it.
Filling AdBlue
App lies to vehicles: with diesel eng in e
A special refill bo ttle must be used to fill the
AdBlue.
Fig. 184 Rig ht rear vehicle si de: removing the Ad Blue
cap
Fig. 185 Ad8lue filler tub e: inse rting the refi ll bott le
The Ad Blue fi ller tube is located near the die­
sel filler tube. Always add 1.5 gallons (5 . 7 lit­
ers) of AdBlue (three bottles). This is the mini­
mum amount required to ensure the system
detects the refilling and to start the engine.
The Ad Blue tank capacity is approximately
4 .5 gal lons (17 liters).
Opening the filler tube and adding
AdBlue
Requirement: The request to add Ad Blue must
appear in the instrument cluster display.
• Switch the ignition off.
• Open the tank cover
c:;,poge 216.
• Turn the cap counterclockwise with the lug
wrench from the vehicle too l kit to remove it
C::,fig. 184.
• Remove the cap from the refill bottle.
• Position the refill bottle on the filler tube
and turn the bottle clockwise until it stops
turning
(D ~ fig. 185 .
• Press lightly against the bottom of the bot­
tle @to empty it . Continue pressing the
bottom of the bottle until it is empty or un­
til fluid stops flowing into the tank.
• Turn the bottle to the left without pressing
on the bottom.
Closing the filler tube
• Turn the cap clockwise on the filler tube
w ith the lug wrench until you hear it tighten
completely .
• Close the tank cover .
After filling
The vehicle must be driven. The system may
take up to two minutes to detect that the
AdBlue has been filled.
• If there was no Ad Blue left in the tank and a
range of
O mi (0 km ) was displayed in the
ins trument cluster, switch the ign ition on
for about 15 seconds before start ing the en­
gine.
_& WARNING
-Ad Blue can irritate the skin, eyes and res­
piratory system. If there is contact with
the fluid, flush immediately with plenty of
water. Consult a phys ician if necessary.
(D Note
-Only use Ad Blu e that conforms to the
standard ISO 22241-1. Do not mix any
additives with the AdBlue and do not di­
lute it with water.
- Do not add Ad Blue to the diese l tank or
add diese l fuel to the Ad Blue tank. Mix­
ing can lead to damage to the engine
and the AdBlue tank system . The Limited
New Vehicle Warranty does not cover
such damage.

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-Ad B lue attacks surfaces such as painted
vehicle components, plastic and carpet .
Remove the fluid as quick ly as possib le
with a damp cloth and plenty of cold wa­
ter. If the Ad Blue has already crystal­
lized, use warm water and a sponge.
AdB lue residue that is not removed w ill
crystall ize and can damage the affected
su rface.
- Do not store the refill bott le in the vehi­
cle. If it leaks, the escap ing Ad B lue could
damage the vehicle inter ior.
- Do not allow AdBlue to come into con­
tact with clo thing. If there is contact
wi th the f lui d, flush immedi ately with
plenty of w ater .
(D Tips
-You can obtain refill bott les from any au­
thorized Audi de aler or o ther qua lified
workshop .
- Follow the AdBl ue manufacturer's in­
str uctions for usage and storage.
Fuel supply and filling your fuel tank 221
•
•

222 Checking and filling
Checking and filling Engine hood
Releasing the engine hood
The engine hood is released from inside the
vehicle .
Fig. 186 Driver foo twell: release lever
Fig. 187 Rocker switch un der the hood
Make sure the wiper arms are not raised up
from the windshield. Otherwise the paint
could be damaged .
.,. With the driver's door open, pull the lever
under the instrument panel in the direction
of the arrow ¢
fig. 186.
... Raise the hood slightly¢.&_ .
... Pr ess the rocker switch under the hood up­
ward ~
fig. 187. This releases the catch.
.,. Open the hood.
A WARNING
Hot engine coolant can burn you.
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before care­
fully opening the hood .
' Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
Whenever you must perform any work in the
engine compartment, for example checking
and filling different fluids, there is a risk of injury, burns and accidents. To prevent per­
sonal injury always observe the following
WARNINGS. The engine compartment of any
vehicle is a hazardous area
¢ ,&. .
A WARNING
To help avoid injury, before you check any­
thing under the hood:
- Turn off the engine.
- Switch off the ignition .
- Apply the parking brake.
- Move selector lever to P (Park).
- Always let the engine cool down. Hot
components will burn skin on contact.
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment. Wait until no steam or
coolant can be seen or heard before care­
fully opening the hood.
- Keep children away from the engine com­
partment.
- Never spill fluids on hot engine compo­
nents . They can cause a fire .
- Never touch the radiator fan. The auxili­
ary electric fan is temperature controlled
and can switch on suddenly .
- Never open the coolant reservoir cap
when the engine is still warm . The cool­
ant system is pressurized and hot cool­
ant could spray out.
- Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the
coolant reservoir.
- Do not remove the engine cover under
any circumstances. This increases the
risk of burns.
- If work on the fuel system or the electri-
cal system is necessary: ..,_

226 Checking and filling
@ Tips
-The oil pres sure warning display. is
not an indicator of the oil level. Do not
rely on it. Instead , check the oil level in
your engine at regular intervals, pref­
erably each t ime you refuel, and always
before going on a long trip.
- If you have the impression your engine
consumes excessive amounts of oil, we
r ecommend that you consult your Audi
dealer to have the cause of your concern
properly diagnosed. Keep in mind that
the accurate measurement of oil con­
sumption requires great care and may
take some time. Your Audi dealer has in ­
str uctions about how to measure oil con­
sumption accurately.
Checking the engine oil level
Fig. 189 Display: o il level indicato r
"'"Park your vehicle on a level surface .
"'"Shu t the engine off when it is warm.
"'" Switch only the ignition back on.
"'"W ait approximately two min utes .
"'" Se lect:
I CAR I function button > (Car)* sys-
tems
con trol button > Servicing & checks >
Oil level.
"'"Check the oil level in the display¢ fig. 189 .
Add engine oil if the bar of the oil level indi­
cator is near "min" ~
page 226 .
Depending on the way the veh icle is driven
and the operating conditions, oil consumption
can be up to 1/2 quart per 600 m iles (0.5 liter
per 1,000 km) . Consumption may be higher
within the f irst 3,000 miles (5,000 km).
(D Tips
The oil leve l indicator in t he MMI Display is
on ly an information display. If the oil level
i s low, a min imum oil warn ing appears in
the instrument cluster. Add oil
¢
page 226. If the hood has been opened,
the current oil level is shown in the instru­
ment cluster the next t ime the ignition is
switched on.
Adding engine oil~
Fig . 190 Engine compa rtment: cover on the e ngin e oi l
filler neck
Before you check anything in the engine com­
partm ent,
always read and heed all WARN­
INGS
¢ A in Working in the engine compart­
ment on page 222.
"'" Shut the eng ine off.
"'"U nscrew the cap
'1:::::11 to the engine oi l filling
hole ¢
fig. 190, ¢ page 224, fig. 188 .
"'"Carefully top off with 0 .5 quarts (0 .5 liters)
of the appropriate oil¢
page 224.
"'" Check the oil level again after two minutes
¢ page 226, Checking the engine oil level.
"'"Top off the o il aga in, if necessary .
"'" Screw the cap back on the fi lling hole .
_&. WARNING
-While topping off, the oil must not come
in contact with hot e ngine parts -fire
hazard!
- The oil filler cap must be properly se­
cured to prevent oil from being sprayed
on the hot engine and exhaust system
when the engine is running -fire hazard! ..,_

240 Tires and whee ls
Be ad Extra load t ire
means the part of the tire that means a tire design to operate
is made of steel wires, wrapped at higher loads and at higher
or reinforced by ply cords and inflation pressures than the
that is shaped to fit the rim . corresponding standard tire.
Bead separation Extra load tires may be identi-
fied as "XL", "xl", "EXTRA
means a breakdown of the bond LOAD", or "RF" on the sidewall.
between components in the
bead .
Gross A xle Weight Rating
(" GAWR ")
Cord
means the load-carrying capaci-
means the strands forming the ty of a single axle system,
p lies in the tire .
measured at the tire-ground in-
Cold tire inflation pressure terfaces.
means the tire pressure recom-
Gross Vehicle Weight Rating
mended by the vehicle manu-( "GVWR ")
facturer for a t ire of a designat-
means the maximum total
ed size that has not been driven loaded weight of the vehicle.
for more than a couple of miles
Groove
(kilometers) at low speeds in
the three hour period before means the space between two
the tire pressure is measured or adjacent tread
ribs.
adjusted.
Load rating (code)
Curb weight
means the max imum load that
means the weight of a motor a tire
is rated to carry for a giv-
vehicle with standard equip -en inflation pressure
. You may
ment including the maximum not find
this information on all
capacity of fuel, oil , and cool- tires because it is not required
ant, air conditioning and addi- by law.
...
tiona
l weight of optional equip-
ment.

252 Tires and wheels
-Always inflate tires to the
recommended and correct
tire pressure before driving
off .
-Driving with underinflated tires bend more, letting
them get too hot resulting
in tread separation, sudden
tire failure and loss of con­
trol.
-Excessive speed and/over­ loading can cause heat
build-up, sudden tire failure
and loss of control.
-If the tire pressure is too low or too high, the tires
will wear prematurely and the vehicle will not handle
well.
- If the tire is not flat and you
do not have to change a
wheel immediately, drive at
reduced speed to the near­
est service station to check
the tire pressure and add air
as required.
@ Note
Driving without valve stem
caps can cause damage to
the tire valves. To prevent
this, always make sure that
factory installed valve stem caps on all
wheels are secure­
ly mounted on the valve.
@) For the sake of the environment
Underinflated tires will also
increase the fuel consump­
tion.
Tires and vehicle load limits
There are limits to the amount of load or weight that any vehi­
cle and any tire can carry. Ave ­
hicle that is overloaded will not
handle well and is more diffi­
cult to stop. Overloading can not only lead to loss of vehicle
control, but can also damage
important parts of the vehicle
and can lead to sudden tire fail­
ure, including a blowout and
sudden deflation that can cause
the vehicle to crash.
Your safety and that of your
passengers also depends on
making sure that load limits are
not exceeded. Vehicle load in­
cludes everybody and every­
thing in and on the vehicle.
These load limits are technical­
ly referred to as the vehicle's
Gross Vehicle Weight Rating
("GVWR "). .,..