2015 AUDI A6 Owners Manual

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-Blend must contain not more than 15%
MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform
espec ially we ll for winter or summer driving.
During seasonal change-over, we suggest that
you fill up at busy gas stat ions where the sea­
sonal adjustment is more likely to be made in
time .
(D Note
-Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compo­
nents in the fuel system .
- Do not use fue ls that fail to meet the
specified criter ia in this chapter.
- If you are unable to determine whether
or not a particular fue l blend meets the
specifications, ask your service station or
its fuel supp lier.
- Do not use fuel for which the contents
cannot be identified.
- Fuel system damage and performance
problems resulting from the use of fuels
different from those specified are not
the responsibility of Audi and are not
covered under the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fuel economy
or driveability and performance prob­ l ems due to the use of one of these fuel
blends, we recommend that you switch
to unblended fuel.
Gasoline additives
A major concern among many auto manufac­
turers is carbon deposit build- up caused by
the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another , they have certain
things in common. All gasoline grades contain
substances that can cause deposits to collect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline brands include additives to keep engine and
Fuel supply and filling your fuel tank 215
fuel systems clean, they are not equally effec ­
tive .
A udi recommends using TOP TIER Detergent
Gasoline. For more info rmation on TOP TIER
Detergent Gasoline, please go to the official
website (www.toptiergas.com).
After an extended period of using inadeq uate
fuels, carbon deposit build-ups can rob your
engine of peak performance.
Q) Note
Damage or malfunction due to poor fue l
quality is not covered by the Aud i New Ve­
hicle Limited Warranty.
Diesel fuel
Applies to veh icles: w ith diese l eng ine
Always use ULSD (Ultra Low Sulfur Diesel)
No. 2. The ULS D No. 2 meets the ASTM D975.
D iesel fuel w ith concentrations of biodiese l
highe r than 5 % such as Bll, B2O or BlOO are
strictly prohib ited.
Serv ice stat ion fuel pumps are labeled with
the correct fuel informat ion for easy recogn i­
t ion by the user. If the diesel fuel pump is not
labeled ask the station operator what fuel is
being dispensed before filling up your vehicle.
ULSD No. 2 may not be available outside the
USA and Canada. Be sure to check before trav­
eling to other countries.
ULSD No. 2 can become thicker in very cold
temperatures, and this can impair the en­ gine's start ing and running. Depending on the
season, gas stat ions provide ULSD No. 2 that
flows better in cold temperatures so that you
can continue operating your vehicle as usua l.
(D Note
-Your vehicle's diesel engine was de­
signed soley for use with ULSD No. 2.
Th erefore, never use gasoline, heating
oil, other f uels or flow improvers . These
contain substances that wi ll severely
damage the fuel system and the engine. .,.
•
•

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.
Ill>

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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. ..,.

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"' rl
"' rl
The AdBlue is stored in a separate tank in the
vehicle. The Ad Blue usage accounts for ap­ prox imately 0.5% to 1.2% of the diese l fuel
that is used.
You must refill the Ad Bl ue or have it refilled
by your authorized A udi dealer or qualified
workshop as soon as the AdBlue refill mes­
sage appears in the instrument cluster
¢page 220.
A WARNING
Failure to heed Ad Blue ref ill information in
the instrument cluste r can prevent the ve­
hicle from being started and drive n. If the
vehicle cannot be driven and an eme rgency
a rises, perso na l inju ry can occur.
- Always have t he Ad B lue tank refilled well
before the t an k ru n s dry.
(D Tips
- The instrument cluster display indicates
the distance remaining that can be dr iv­
en
¢ page 219. If the Ad Blue tan k is
com plete ly empty, the eng ine will not
star t aga in a fter the ign ition i s swit ched
off.
- Ad Blue is required by l aw to ope rate this
vehicle .
Indicator in the instrument cluster
display
Applies to vehicles: with d iesel e ngine
The display indicates if the Ad Blue level is low
or if it was filled incorrectly.
F ig . 18 3 Ins trume nt cluste r: in dicato r in th e d isplay
Fu el suppl y and filli ng your fuel t ank 219
AdBlue level low
Yo u w ill be informed if t he A d Bl ue in the t ank
drops below a certain leve l.
Plea se refill Ad Blue. Range 1500 mile s
(2400 km)
This ind icator appears when there is only
enough Ad Blue left to d rive the distance i ndi­
cate d in the drive r informa tion syst em. Please
add AdBl ue.
AdBlue ,0 Refill AdBlue! Cannot start en­
gin e in
600 miles (1000 km )! See owner's
manual
This indicator appears whe n there is only
enough Ad Bl ue left to drive the distance indi ­
cated in the drive r information system. Please
add AdBl ue. Othe rwise the e ngin e w ill not
s tart again if you s top it o nce the di stan ce in ­
di cated has been driven.
Refill AdBlue! No re start! See
owner's manual
This message appears when the Ad Blue tank
i s empty . Please add Ad B lue. Otherw ise you
will not be able to sta rt the eng ine again once
you stop it.
When the minimum Ad Blue leve l has bee n
reached, you must add Ad Blue¢
page 220 .
&I Filling incorrectly
If the Ad B lue tank was filled with a d ifferent
fluid than Ad B lue and the system detects that
it is incorrect, a message will appear .
AdBlue ,/ AdBlue: System fault No restart
in
600 mile s (1000 km)! See owner 's man­
ual
T his message appears when it is on ly possible
to
dr ive the distance indicated in the driver in ­
format ion system. D rive to the nearest quali­
fied workshop to have the ma lfunction re­
paired. Otherw ise the eng ine will not start
again if you stop it once the distance indicated
has been dr iven.
Ad Blue: System fault No restart!
See owne r's manual
lilJ,

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: ..,_