2017 AUDI A7 engine

Check ing and F illing
fi ll up at busy gas stations where the seasona l
adjustm ent is more likely to be mad e in time .
0 Note
-Me thanol f uels which do no t meet these re­
quirements may cause corrosion and dam­
age to plastic and rubber components in the
fuel system .
- Do not use fuels that fail to meet the spec i­
fied criteria in this chapter .
- If you are unable to determine whether or not a particular fuel blend meets the spec i­
fications, ask your service station or its fuel supplier.
- Do not use fuel for which the contents can­
not be identified.
- Fuel system damage and performance prob­
lems resulting from the use of fue ls differ­
ent from those specified are not the respon­
s ibility of Audi and are not covered under
the New Veh icle or the Emiss ion Control
System Warranties.
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel b lends, we
r ecommend that you switch to unblended
fuel.
Gasoline additives
A ma jo r concern among many auto manufactur­
ers is carbon deposit build- up ca used by the type
of gasoline you use.
A lthough gasoline grades d iffer from one manu­
facturer to another, they have cer tain things in
common . All gaso line grades contain substances
that can cause deposits to collect on vita l engine
parts, such as fue l 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 TIE R Detergent Gas­
oline. For more information on TOP TIER Deter ­
gent Gasoline, please go to the official website (www.toptiergas .com) .
192
After an extended period o f using inadequate
fuels, carbon deposit bui ld-ups can rob your en­
gine of peak performance.
([) Note
Damage or ma lf u nction due to poor fue l qual ­
ity is not covered by the Audi New Vehicle
Limited Warranty .
Diesel fuel
Applies to: vehicles wi th diese l en gin e
Always use ULSD (Ultra Low Sulfur Diese l) No. 2 .
The ULSD No. 2 meets the ASTM D97S.
D iesel fuel w ith concentrations of b iod iesel high­
er than 5 % such as B l 1, B20 or BlOO are st rict ly
prohibited .
Se rvice station fuel pumps are labe led wi th the
correc t fu el i nfo rmation for easy recogn ition by
the user . If the diesel fue l pump is not labe led
ask the station operator what fue l is being dis­
pensed before filling up your vehicle .
U LSD No . 2 may no t be ava ilable outside the USA
and Canada . Be s ure to check befo re t raveling to
other countries .
U LSD No . 2 can become th ic k e r i n very co ld tem­
peratures, and this can impa ir the e ng ine's s tart­
i ng and running . Depend ing on the season, gas
stations provide ULSD No . 2 that flows better in
cold temperatures so that you can continue oper­
at ing your vehicle as usual.
(D Note
- Your vehicle's diese l engine was designed
so ley for use with ULSD No . 2 . Therefore,
never use gasoline, heating oil, other fuels
or flow improvers. These contain substances
that will severely damage the fuel system and the engine. Such damage will not be
covered by your New Vehicle Limited War­
ranty.
- If you put any amo unt of incorrect fuel in
the fuel tank, do not start the engine under
any c ircumstances. Immed iate ly contact the
nearest author ized A udi dealer or author-
ized Aud i Serv ice Facility fo r ass istance .
IJ,-

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<..:l 'SI"
These fuels contain substances that can se­
vere ly damage the fuel system and the en­
gine if the engine is started .
Refueling
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 fail , you can
still open the flap manually - for detailed instruc­
tions see
~ page 195 .
You can find the fuel tank capacity of your vehicle in
~ page 262 .
The label on the inside of the fuel filler flap tells
you the correct fuel for your vehicle. For mo re in­
formation about fuel specifications , see
~ page 191 .
You r vehicle fuel tank has an onboa rd refuelling
vapor recovery sys tem . This fea tu re helps to pre­
vent fuel vapors from escaping from the tank and polluting the environment while you refuel your
vehicle. In order to fill the tank properly while
protecting the environment, please follow this
refueling procedure carefully.
_& WARNING
Under norma l operating conditions, never car­
ry additiona l fuel containers in your car. Gas
canisters and other containers used to trans­
port fuel can be dangerous. Such containers,
full or empty, may leak and could cause a fire
in a collision . 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).
(D Note
Never drive your vehicle until the fuel tank is
completely empty. The irregular supply of
fue l can cause misfiring. Gasoline could enter
the exhaust system and damage the catalyt ic
converter.
Checking and Filling
Fueling procedure
Fig. 176 Righ t re ar sid e of the v ehicl e: openin g th e fu el
fille r door
Fig. 177 Fue l filler doo r with at tached fuel cap
T he fue l filler door is unlocked or locked by the
central locking system.
Opening the fuel cap
"' Press on the left side of the fue l filler door to
open ~
fig. 176 .
"'U nscrew the tank cap counterclockwise.
"' Place the cap from above on the open fuel filler
door ~
fig. 177.
Closing the fuel cap
"' Sc rew the tank cap on to the right on the filler
neck until it cannot turn any farther.
"' Then press on the left s ide of the tank door un-
til it latches.
Once the pump nozzle switches off, the fuel tank
is "full ". Do not fill the tank mo re . Otherwise the
expans ion space in the tank w ill be filled .
The correct fuel type for your vehicle can be
found on a label located on the inside of the fuel
filler door. Fo r additional informa tion on fuel,
see
~ page 191.
193

Checking and Filling
The fuel tank capacity of your vehicle is listed in
the
Technical Data section ~ page 262.
To avoid fuel spilling or evaporating from the fuel
tank always close fuel cap properly and com­
pletely. An improperly closed fuel filler cap may
also cause the MIL lamp~
page 25 to come on.
A WARNING
Not paying attention when fueling or han­
dling fuel incorrectly can lead to fires, explo­
sions or serious injuries .
- Fuel ignites easily and can cause serious burns and other injuries .
- If you do not switch the engine off when fu­
eling and/or do not insert the fuel no zzle
completely into the tank opening, fuel can
leak out or run over . Leaked fuel can ignite
and start a fire .
- Do not use the telephone while fueling. The
electromagnetic rays can cause sparks,
which can ignite fuel vapors and start a fire .
- Do not sit in your vehicle while fueling . If
you must make an exception and enter your
vehicle again while fueling, close the door
and touch metal to discharge static electric­ity before touching the fuel nozzle . Static
electricity can create sparks, which can ig­
nite vapors when fueling.
- Do not smoke or have an open flame in the
area when fueling your vehicle or filling a
fuel container because this increases the risk of an explosion.
- For your safety, carrying fuel containers in
your vehicle is not recommended. Whether
full or empty, the container can leak and
cause a fire in the event of an accident.
- If you must make an exception and trans­
port a fuel container, note the following:
- Never fill the fuel container with fuel
while it is in or on the vehicle. Static elec­
tricity is discharged when filling which can
cause the fuel vapors to ignite and in­
creases the risk of an explosion.
- Always place a fuel container on the
ground before filling.
- Always hold the fuel nozzle completely in
the fuel container when filling.
194
-If the fuel container is made of metal, the
fuel nozzle must always be in contact with
the container when filling it with fuel. This
prevents static electricity from discharg­
ing .
-Never spill fuel in the vehicle or the lug­
gage compartment . Evaporated fuel is ex ­
plosive and increases the risk of serious in­
jury or death .
- Follow legal requirements when using, storing and transporting fuel containers .
- Make sure the fuel container conforms to industry standards (ANSI/ASTM F852-86).
(D Note
-Remove spilled fuel from vehicle paint im­
mediately, because it can damage paint.
- Never drive until the fuel tank is completely
empty. The irregular supply of fuel that re­
sults from that can cause engine misfires.
Uncombusted fuel will enter the exhaust
system and increase the risk of damage to
the catalytic converter .
(D Note
Applies to: vehicles with diesel eng ines
If the fuel tank runs completely empty, the
ignition must remain switched on for at least
30 seconds after refueling before starting the
engine. It may take longer than usual for the
engine to start, even up to a minute. This is
because the air must first bleed out of the
fuel system when starting the engine.
@ For the sake of the environment
Do not overfill the fuel tank, otherwise fuel
can leak out when the vehicle is warming up.
(y Tips
The fuel filler door on your vehicle does not lock if you lock the vehicle from the inside.
(D Tips
Applies to: veh icles with diesel e ngin es
Diesel vehicles are equipped with a misfueling
guard
l) . It allows the vehicle to be fueled on-
ly with a diesel fuel pump nozzle . .,.

Checking and Filling
-Ad Blue is required by law to operate this ve­
hicle .
Messages in the instrument cluster display
Applies to: vehicles with selective catalytic reduction
The display indicates if the Ad Blue level is low or
if there is a system malfunction.
AdBlue level low
You will be informed if the Ad Blue in the tank
drops below a certain level.
Please refill AdBlue . Range x mi (km)
This message appears when there is only enough
Ad Blue left to drive the distance indicated in the
driver information system . Fill the AdBlue.
Ad Blue ,0 Refill AdBlue! Cannot start engine
in x mi (x km)! See owner's manual
This message appears when there is only enough
Ad Blue left to drive the distance indicated in the
driver information system. Fill the AdBlue. Other­
wise the engine will not start again if you stop it
once the distance indicated has been driven. You
can also check the remaining distance in the on­
board computer* .
Refill Ad Blue! No restart! See own-
er's manual
This message appears when the Ad Blue tank is
empty . Fill the Ad Blue . Otherwise you will not be
able to start the engine again once you stop it .
The AdB lue must be refilled when the amount in
the tank has reached the minimum level
c::> page 196, Filling AdBlue.
Incorrect filling/system malfunction
A message appears if the Ad Blue tank was filled
with a fluid other than AdBlue and the system
has detected that the tank was fi lled incorrect ly,
or if there is a system malfunction .
Ad Blue-/' Ad Blue : system fault. No re start in
x mi (x km) See owner's manual
This message appears when it is only possible to
d rive the distance indicated in the driver informa­
tion system. Drive to the nearest authorized Aud i
dealer or authorized Aud i Serv ice Facility to have
196
the malfunction corrected . Otherwise the engine
will not start again if you stop it once the dis­
tance indicated has been driven.
AdBlue: System fault No restart!
See owner's manual
This message appears if the system has detected
that the tank was fi lled incorrect ly or that there
i s a ma lfunction. Drive immed iate ly to the near­
est authorized Audi dealer or authorized Audi
Service Facility to have the ma lfunction co rrect ­
ed. Otherwise you wi ll not be able to start the en­
gine again once you stop it.
Filling AdBlue
Applies to: vehicles with selective cata lytic reduct ion
Fig. 180 R ig ht rea r side of t he ve hicle: removing the Ad B l­
ue cap
The Ad Blue tank open ing is located near the die­
sel tank opening . Add at least 1.5 gallons (S . 7
lit ers) of Ad Blue . This is the minimum amount re­
quired to ensure the system detects the refilling
and to start the eng ine. You can add a maximum
of 4.5 gallons (17 lite rs).
Requirement: the request to add AdBl ue must
appear in the ins trument cluster display .
.,. Switch the ignition off.
.,. Open the tank filler door
c::> page 193.
.,. Tu rn the cap on the filler neck counter-clock­
w ise using the wheel wrench from the vehicle
tool kit to remove it
c::> fig. 180.
.. Fill the Ad Blue using a bottle c::> page 197 or a
canister
c::> page 19 7.

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\.J - A WARNING ,~
Ad Blue can irritate the skin, eyes and respira­
tory system. If there is contact with the fluid,
flush immediately with plenty of water . Con­
sult a physician if necessary.
CD Note
- Only use Ad Blue that conforms to the
standard ISO 22241 -1. Do not mix any addi ­
tives w ith the AdBlue and do not d ilute it
with water.
- Do not add Ad Blue to the diesel ta nk or add
diesel fuel to the Ad Blue tank. Do not start
the engine under any circumstances if the
wrong f uel is filled in the tank. There is a
risk of damaging the fuel tank system and
the engine. See an author ized Audi dealer or
authorized Audi Service Facility for ass is­
tance .
- Ad B lue attacks surfaces such as pa inted ve ­
hicle components, plast ic and carpet . Re­
move the fluid as quickly as poss ible with a
damp cloth and plenty of cold water. If the
Ad Blue has already crysta llized, use warm
water and a sponge . AdBlue residue that is
not removed will crysta llize a nd can damage
the affected surface.
- Do not store refill bottles or canisters per ­
mane ntly in the vehicle . If the container
l ea ks, the escaping AdBl ue could damage
t h e veh icle inter io r.
- Do not allow AdBlue to come into co ntact
with clothing. If there is contact w ith the
f lui d, f lush immed iate ly w ith p lenty of wa­
te r.
(j) Tips
Follow the Ad B lue man ufact urer's instr uc­
t ions fo r use and storage.
Refilling AdBlue using a bottle
Applies to: vehicles with selective catalytic reduction
.. Remove the cap from the refi ll bottle ¢ A in
Filling AdBlue on page 197, ¢(Din Filling
AdBlue on page 197 .
Check ing and Filling
.. Position the bott le on the fi ller tube and turn
the bottle clockwise until it stops turning .
.. Press lightly against the bottom of the bottle
to empty it. Cont inue pressing the bottom of
the bottle until it is empty or until fluid stops
flow ing into the tank .
.,. Remove the bottle and seal the filler neck
¢ page 198, Completing AdBlue refill.
CD Note
Only use refill bottles that are approved for
your vehicle . Using other systems can cause
Ad B lue to leak.
@ Tips
- You can obtain ref ill bottles from an author­
ized Aud i dea le r o r aut horized Aud i Serv ice
Facility.
- A permitted refi ll bottle contains approxi­
mately 0.5 gallon (1.9 liters) of AdBl ue.
Refilling AdBlue using a canister
Applies to: vehicles with selective catalytic reduction
®
+®
Fig. 181 Can iste r w ith attachable hose
.. Remove the cover from the refill canister¢ A
in Filling AdBlue on page 197, ¢(Din Filling
AdBlue on page 197 .
.,. Secure the end of the hose (Don the opening in
t he caniste r@ by turni ng the hose to the right.
.,. Remove the cap @ from the o ther end of the
hose @.
.. Position the end of the hose @ on the filler
neck in the veh icle and turn the hose to the
r ight to tighten it .
.. Lift the canister up and then t ip it. Cont inue
holding the canister in a tipped pos ition until it ..,.
197

Check ing and F illing
is empty or until no mo re fluid flows into the
tank.
~ Remove the canister and close the fi ller tube
c> page 198 , Completing AdBlue refill .
(D Note
Only use refi ll canisters that are approved for
your vehicle. Us ing other systems can cause
Ad Blue to leak.
@ Tips
- An authorized Audi dealer or authorized
Audi repair facility can te ll you which ref ill
can isters are approved for your vehicle.
- A permitted refill canister contains approxi­
mately 1.3 ga llons (5 liters) of AdB lue.
Completing AdBlue refill
Applies to: vehicles with selective catalytic reduction
C losi ng the filler neck
~ Turn the cap on the filler neck to the right with
the wheel wrench unt il the cap clicks into place.
This t ightens the cap to the specification o &
in Filling AdBlue on page 197, c> (D in Filling
AdBlue on page 197 .
~ The n press on the left side of the tank doo r un-
ti l it l atches.
After filling
The vehicle must be driven so that the system
recognizes that the Ad Blue was refilled . T his can
take severa l m in utes.
~ If there was no Ad Blue left in the tank and a
range of O mi (0 km) was shown in the d isplay,
switch the ign it ion on for about 30 seconds be­
fo re sta rting the engine.
(D Tips
Ad Blue can freeze at very low temperat ures .
If this happens, the system will not detect
that the Ad Blue was refilled a nd it will contin­
ue to inform yo u of the low Ad Blue level. The
message turns off as soon as the tank thaws
out again.
198
Catalytic converter
Applies to: vehicles with gasoline engine
It is very important that your emission control
system (catalytic converter) is func tioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner .
~ Always use lead-free gasoline c> page 191, Fuel
supply .
~ Never run the tank down all the way to empty.
~ Never put too much motor o il in your engine
c> page 204, Adding engine oil.
~ Never try to push- o r tow-start your vehicle .
The catalytic converter is an efficient "clean -up "
device built into the exhaust system of the veh i­
cle. The catalyt ic converter b urns many of the
po llutants in the exhaust g as befo re they are re­
l eased into the atmosphere.
The exclusive use of un leaded fuel is critically im­
po rtant fo r the life of the catalytic converte r and
prope r funct io ni ng of the engine.
_&. WARNING
The temperat ure of the exhaus t sys tem is
high, both when driv ing and a fter stopping
the engine.
-
- Never tou ch the exhaust tail pipes once they
have become hot. This cou ld resu lt in burns.
- D o not p ark or operate the vehicle in ar eas
where the hot exhaust system may come in
contact with dry g rass, brush, fuel spi ll or
other mate rial which can ca use a fire.
- Do not apply additiona l undercoating or
rustp roofing on or near the exhaust mani­
fold, exha ust pipes, cata lytic conve rter or
heat shields . D uring driving, the substance
used for unde rcoat ing could overheat and
cause a fire .
Cl) Note
-Be aware that just one tank f illing wit h
leaded fu e l w ill already seriously degrade
the performance of the catalytic converter.
- Do not exceed the correct engine oil leve l
c>page204.

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\.J ' -Do not drive until the fuel tank becomes
complete ly empty . The engine cou ld mis­
fire. Unburned fuel could also get into the
exhaust system and this cou ld cause the
catalytic converter to overheat.
- Do not switch off the ignition while the vehi­
cle is moving.
- Do not continue to operate your vehicle un­
der these conditions, as otherwise fuel can
reach the catalytic converter. This could re­
sult in overheating of the converter, requ ir­
i ng its replacement.
- To assure efficient operation of the Emis­
sion Control System:
- Have your vehicle maintained properly and
in accordance with the service recommen­
dations in your Warranty
& Maintenance
book let.
- Lack of proper maintenance as we ll as im ­
proper use of the vehicle will impair the
function of the emission control system and could lead to damage.
® For the sake of the environment
Even when the Emission Control System is op ­
erating properly, the exhaust gas can have a
sulfur-like exhaust gas smell under some op­
erat ing states. This depends on the su lfur
content of the fuel being used. Using a differ­
ent brand of fue l may help, or filling the tank
w ith lead-free super grade gasoline .
Diesel particulate filter
Applies to: veh icles with diesel engine
The diesel particulate filter filters nearly all of
the soot particles out of the exhaust. The filter
cleans itself automatically under normal driving
conditions . If the filter cannot clean itself (for ex­
ample , because you are only driving short distan­
ces), the fi lter becomes clogged with soot and
the
II symbo l for the diesel particulate filter il­
luminates
¢ page 17.
A WARNING
-Do not park your vehicle over flammable
materials such as grass or leaves because
-
Checking and Filling
the high temperature of the diesel particu­
late filter could start a fire.
- Do not apply an underbody protectant in the
exhaust system area or a fire could start.
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and filling fluids, there is a risk of in­
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precaution s provided in the following in·
formation . The engine compartment is a dan­
gerous area on the vehicle.
¢ ,&..
A WARNING
= =--
- Turn the engine off.
- Switch the ignition off.
- Set the parking brake.
-Select the P selector lever position.
- Let the engine cool down.
- Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping .
- Keep children away from the engine com­
partment .
- Never sp ill fluids on a hot engine. These flu­
ids (such as the freeze protection contained
in the coolant) can catch fire.
- Avoid short circuits in the electrical system.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of personal injury.
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
coo ling system is under pressure.
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
large cloth when opening.
199

Checking and Filling
-Do not remove the engine cover under any
circumstances . This increases the risk of
burns.
- If tests need to be performed with the en­
gine running, there is additional danger due
to moving components (such as the ribbed belt, alternator and radiator fan) and from
the high voltage ignition system.
- Do not under any circumstances give gas in­
advertently (for example, by hand from the
engine compartment) if the vehicle is sta­
tionary but the engine is running and a gear
is engaged. Otherwise, the vehicle will start
to move immediately and this could result
in an accident.
- Pay attention to the following warnings list­
ed when work on the fuel system or on the
electrical equipment is required.
- Do not smoke .
- Never work near open flames.
- Always have a working fire extinguisher
nearby
- All work on the battery or electrical system
in your vehicle can result in injuries, chemi·
cal burns, accidents or burns. Because of
this, all work must be performed
only by an
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk of electric shock and in­
jury, never touch the following components when the engine is running or is being start­
ed :
- Ignition cable
- Other components in the electronic high-
voltage ignition system
-If you must check or perform work on the
engine while it is running:
- Set the parking brake and place the selec­
tor lever in the P (park) position first .
- Always proceed with extreme caution so
that clothing, jewelry or long hair do not
become caught in the radiator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie back long hair before beginning
work and do not wear clothing that can
hang down into the engine.
200
-Limit your exposure to exhaust and chemi­
cals to as short a time as possible
c> A .
A WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and
reproductive harm . In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
(D Note
When filling fluids, be sure not to mix the flu­
ids up. Otherwise severe malfunctions and en­
gine damage will occur.
@:) For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids, bring your vehicle to an authorized Audi deal­
er or authori zed Audi Service Facility to be
checked.