2018 AUDI A7 engine

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" N .... 0 00 \.J ' intervals and ensures a better reaction time for
the brakes in wet weather.
The braking effect can also be reduced if you are
driving on salted roads and you do not apply the
brakes for long periods of time. The layer of salt
on the brake rotors and pads must be worn off
first when the brakes are applied.
Due to its surface, the ceramic brake rotor* ab­
sorbs moisture in certain situations. Therefore,
there will temporarily be less braking force than
when the brakes are dry. You can compensate for
this by pressing the brake pedal harder.
Corrosion
Leaving the vehicle parked for long periods of
time, low mileage and avoiding heavy braking
can contribute to corrosion on the brake rotors
and to dirty brake pads.
If you usually avoid heavy braking or if there is
corrosion present, occasional heavy braking at
high speeds is recommended to clean the brake
rotors and
pads ¢.&. .
Brake system malfunction
If you notice that the brake pedal travel has sud­
denly increased, then a brake circuit in the dual­
circuit brake system may have malfunctioned. Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
problem corrected. On the way there, drive with
reduced speed and keep in mind that you will
need a longer distance to stop and you will need
to press the brake pedal harder .
Low brake fluid level
When the brake fluid level is low, malfunctions in
the brake system may occur . The brake fluid level
is electronically monitored .
Brake booster
The brake booster amplifies the pressure you ap­
ply to the brake pedal. It only works when the en­
gine is running.
A WARNING
-Only apply the brakes for the purpose of
cleaning the brake system when road and
-
Intelligent Technology
traffic conditions permit. You must not en­
danger other road users. This increases the
risk of an accident.
- Never let the vehicle roll while the engine is
stopped because this increases the risk of an
accident.
- New brake pads do not achieve their full
braking effect during the first 250 mi
(400 km) . They must be "broken in" first.
The break-in period can be considerably lon­
ger for vehicles with ceramic brake rotors*.
However, you can compensate for the
slightly reduced braking force by pressing
firmly on the brake pedal. Avoid heavy brak­
ing during the break-in period.
- Certain weather and operating conditions
such as driving through water, driving in
heavy rain or driving after washing your ve­
hicle can impair the effectiveness of the
brakes. In the winter, ice may build up on
the brake pads, rotors and drums. Check
these components by braking carefully. Ap­
plying the brakes carefully several times
dries the brakes and removes ice build-up .
- The efficiency of the brakes can also be im­
paired by driving for long stretches on roads
covered with salt without using the brakes.
You can remove salt deposits from the
brake rotors and pads by carefully applying
the brakes several times.
- If the front spoiler is damaged or you install
another spoiler, make sure the front wheel
brakes are ventilated properly. Otherwise,
the brake system could overheat, which re­
duces their effectiveness.
- Failure of a brake circuit impairs braking
performance, which increases braking dis­
tance. Avoid driving the vehicle and have it
towed it to the nearest authorized Audi
dealer or authorized Audi Service Facility.
- If the brake booster is not working, you will
have to press much harder on the brake
pedal to compensate for the lack of the
booster .
@ Note
-Never let the brakes "rub" by pressing the
pedal lightly when braking is not actually
123

Intellig ent T echn olo gy
necessary. This causes the brakes to over­
heat and increases braking distance and
causes wear.
- Before driving downhi ll a long distance on a
steep hill, decrease your speed and select a l ower gear. This makes use of the engine
braking effect and relieves the brakes. If
you need to brake additionally, brake in in­
tervals and not continuously .
(D Tips
-If the brake booster is not working, you
must press the brake pedal with much more
force than normal.
- If you retrofit your vehicle with a front spoil­
er, wheel covers or s imilar items, make sure
that the a ir flow to the front wheels is not
i nterrupted. Otherw ise the brake system
ca n become too hot.
Electromechanical
steering, dynamic
steering
The electromechanical steering supports the
driver's steering movements .
Power steering adapts electronically based on
the vehicle speed .
Indicator light s and me ssages
• Do not d rive vehicle: St eering d efecti ve
If t his ind icator light tu rns o n and stays o n and
this message appears, t he power steer ing may
have fai led.
Stop the veh icle in a safe locat io n as soon as pos­
sib le. Do
n ot continue dr iving. See an author ized
Aud i dea ler or authorized Aud i Serv ice Facility for
assistance.
l;:r-ij St ee ring : Sys tem f ault You can con tinu e
dri ving
If the ind icator light turns on and the message
appears, the steering wheel may be more diff i­
cult to move or mo re sensit ive tha n usual. The
steer ing whee l may a lso be at an angle when
driving straight .
124
Drive slowly to an authorized Audi dea ler or au­
thorized Audi Service Facility to have the mal ­
funct ion corrected .
'I-ij Dyn ami c ste ering : Initializing
If the indicator l ight is blinking and this message
appears, dy namic stee ring* is be ing initialized.
The steer ing whee l will be easy to move afte r
start ing t he engine . Re -init ialization mig ht be
necessary if the steering wheel was moved hard
to the left and right while the vehicle was not
moving . The d isp lay turns off if the init ia li zation
was successful.
(D Tips
- If the . or 'Tfl indicator light only stays on
for a short time, you may cont inue driving .
- Th e dynamic steering stability systems
<=>page 120 are not avai lab le in the event of
a system malfunction.
- For additiona l information on dynamic
steering, see
<=> page 105.
All wheel drive (quattro)
Applies to: vehicles with all wheel drive
In all wheel drive, all four wheels are powered.
G en eral information
In all whee l dr ive, the dr iv ing power is divided be ­
tween all four whee ls. This happens automatical­
l y depending on your driving behavior as we ll as
the current road conditions . Also see
c> page 120, Electronic stabili zation control
(ESC).
A center differential distributes the driving power
variab ly to the front and rear ax le. It works to­
gether w ith selective whee l torque contro l, wh ich
activates when driving through curves
<=>page 120 . With the sport d ifferent ial*, power
distribution to the rear wheels is variable and can
be adjusted with d rive select
c> page 105 .
The all wheel drive concept is designed for high
engine power . Your vehicle is except ionally pow­
erful and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. A lways read and follow safety pre-
ca utions
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Intellig ent T echn olo gy
A WARNING
When extending and retracting the rear spoil­
er, make sure there are no persons or objects
w ith in the spoiler range to reduce the risk of
injury .
A WARNING -
Driv ing at higher speeds w ithout the rear
spoiler dep loyed can impa ir hand ling cha rac­
ter istics, mak ing the veh icle h arder to con­
trol.
- Always make sure that the spoiler is de ­
ployed whe n driving at speeds ove r 85 mp h
(140 km/h) . If the rear spoiler warning/indi ­
cator lig ht in the instrument cluster comes
on, the rear spoi ler may not have deployed.
- Never drive at speeds higher than 85 mph
(140 km/h) if the spoiler is not deployed .
Have the spoiler inspected as soon as possi­
ble by an author iz ed Audi dealer or qualif ied
workshop.
- Always obey speed limits and other traffic
laws .
@ Note
-Never push on the vehicle on the rear spoi l­
er . T his cou ld cause damage.
- To prevent damage to the rear spoiler do not lean or p lace anyt hing on it.
- Only operate t he rear spoiler manually when
the luggage compartment lid is close and
the rear spoiler moving parts are not
blocked. Otherwise, damage could occur.
(D Tips
Clean the rear spoi ler compartment every 2 to
3 months . To function correctly, the rear
spoiler must be free of ice, snow and leaves.
126
Energy management
The starting ability is optimized
T he energy management sys tem manages the
electrical energy distribution and optimizes the
availability of electrical energy for starting the
engine.
When a vehicle with a conventional energy sys ­
tem is not driven for a long time, the veh icle bat­
tery is drained by equ ipment (for example, the
i mmob il izer). I n certa in circumstances, there
could may not be enough energy to start the en ­
gine.
Your vehicle is equipped with an intell igent ener­
gy management system fo r dist ributing elect rici­
ty. Thi s sign if icantly improves the start ing ab il ity
and increases the vehicle battery life .
The energy management system Is made up of
battery dia gno sis , idling current management ,
and dynamic energ y m ana gement .
Battery di agnosis
T he battery diagnos is determines the vehicle bat ­
tery cha rge level. The sensors detect the batte ry,
t h e battery cur rent, and the battery temperature .
The current cha rge level and the pe rformance of
t h e ve hicle battery are dete rm ined based on th is.
Idling current management
The idling current management decreases the
energy used while parked . With the engine
switched off , it ma nages the ene rgy distr ib ution
to the d ifferent e lectr ica l components . Data from
t h e battery d iagnosis is ta ken into a ccou nt for
t hi s.
Depend ing on the vehicle batte ry cha rge level,
electr ical eq uipme nt is switched off one item af ­
te r th e o ther to p revent the veh icle bat tery from
dra ining and to ma intain the starting ab ility.
Dynamic energy manag ement
While driv ing , dynam ic energy management dis­
t ributes the app ropr iate amo unt of energy to t he
electr ical eq uipme nt.
It contro ls the batte ry
c h arge level so tha t the amount of energy is no t
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" N .... 0 00 \.J ' greater than the amount being generated in or­
der to maintain an optima l vehicle battery charge
level.
(D Tips
-Energy management cannot overcome the
l aws of physics. Note that the charge leve l
and length of the vehicle battery life are
limited.
-When the starting ability is endangered, the
(•) indicator light turns on qpage 14.
What you should know
Maintaining the starting ability is the highest
priority.
A lot of stress is placed on the vehicle battery
when driving short distances, during city driving,
and at co ld times of the year. A lot of energy is
used but little is generated. It is a lso critical
when the engine is not running but electrical
equipment is switched on. In this case, energy is
used but none is generated.
In situations like this, energy management will
actively regulate the distribution of energy.
Long periods without use
If you do not drive your vehicle for several days or
weeks, e lectrica l equipment is gradually sca led
back or switched off. This reduces energy use and
ensures the vehicle wi ll be able to start after long
periods of time. Some convenience functions,
such as interior lighting or power seat adjust­
ment, may not be available under certain circum­
stances . These convenience functions will be
ava ilable again once you switch the ig nition on
and start the engine.
With the engine switched off
The vehicle battery will drain if you use Infota in­
ment functions such as listening to the radio
while the eng ine is switched off.
The vehicle's ability to start may be impaired by
the energy use, a message will appear in the In­
fotainment system d isplay .
The message ind icates that the system will
switch off automatically soon. If you wou ld like
Intelligent Technology
to continue using the functions, you must start
the engine.
With the engine running
Although e lectr ical energy is generated wh ile
dr iv in g, the veh icle battery can drain. This can
happen if little energy is generated but much is
used, and the charge level of the vehicle battery
is not optimal.
To r esto re the balance of energy, components
that require large amounts of energy are tempo­
rarily scaled back or switched off . Heating sys­
tems in particular require a great deal of energy .
If you notice, for example, that the seat heating*
or rear window defogger is not work ing, then it
has been temporarily reduced or sw itched off.
These systems are available aga in as soon as the
energy supply has been restored .
In add ition, you may notice that the idle speed
has slightly increased. That is normal and no
cause for concern. By increasing the idling speed,
the addit ional required energy will be generated
and the vehicle battery w ill be charged .
Notice about data
recorded by the Event
Data Recorder and
vehicle control modules
Event Data Recorder
This vehicle is equ ipped w ith an Event Data Re­
corder (EDR) . The ma in purpose of an EDR is to
record, in certain crash or near crash-l ike situa­
tions, such as an airbag deployme nt or hitt ing a
road obstacle, data that will ass ist in understand­
ing how a vehicle 's systems performed. The EDR
is designed to record data related to vehicle dy ­
namics and safety systems for a short period of
time, typically 30 seconds or less. The EDR in this
vehicle is designed to record such data as:
-How various systems in your vehicle were oper ­
ating;
-Whether or not the driver and passenger safety
be lts were buckled/fastened;
-How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
..,.
127

Intelligent Technology
-How fast the vehicle was traveling.
These data can help prov ide a better unde rstand­
ing of the circumstances in which crashes and in­
juries occur. NOTE: EDR data are recorded by your
vehicle only if a non-trivia l crash situation occurs;
no data are recorded by the EDR under norma l
driving conditions and no personal data (e.g.,
name, gender, age, and crash location) are re­
corded. However, other parties, such as law en­
forcement, could combine the EDR data with the
type of personally identifying data routinely ac­
quired during a crash invest igat ion.
To read data recorded by an EDR, special equip­ ment is required, and access to the veh icle or the
EDR is needed . In add it ion to the vehicle manu­
facturer, other parties, such as law enforcement,
that have the special equipment, can read the in­
formation if they have access to th e veh icle or the
EDR.
Some state laws restr ict the retrieval or down­
loading of data stored by ED Rs insta lled in a vehi ­
cle for the express purpose of retrieving data af ­
ter an accident or crash event without the own ­
er's consent .
Aud i w ill not access the EDR and/o r similar data
or give it to othe rs -
- unless the vehicle owner (or lessee if the veh i­
cle has been leased) agrees; or
- upon the official request by the police; or
- upon the order of a court of law or a govern-
ment agency; or
- for the defense of a lawsu it through the judicial
discovery process.
- Audi may also use the data for research about vehicle opera tion and safety performance or
provide the data to a third party for research
purposes without identifying the specific vehi­
cle or information about the identity of its own­
er or lessee and only after the recorded vehicle
data has been accessed.
Vehicle control modules
Your veh icle is also equipped with a number of
electron ic control modules for various veh icle
systems, such as engine management, emission
cont rol , airbags, and safety belts.
128
These electronic contro l modules record data
during normal vehicle operation that may be
needed by trained techn ic ians for diagnostic and
repair purposes. The recording capab ility of these
modules is lim ited to data (no sound is record­
ed) . Only a small amount of data is actually re­
corded over a very limited per iod of time, or stor­
ed when a system fault is detected by a contro l
module . Some of the data sto red may relate to
vehicle speed, direction , or braking, as well as re­
straint system use and performance in the event
of a crash. Stored data can also on ly be read and
down loaded with specia l equipment that is di­
rectly connected to the vehicle.
(D Tips
Your vehicle may be equipp ed wit h Audi con ­
nect. Your use of certain Audi connect fea­
tures requires wire less services that are pro­
v ided by a third party wireless telecommuni­
cations provider . For details regarding how in­
formation obtained through Audi connect is
collected, processed, transmitted, used, and
sha red, please see your contract with the
wireless telecommunications provider.

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" N .... 0 00 \,;J ' Checking and Filling Fuel
Gasoline grade
A pplies to: ve hicles with gasoline engines
The correct gasoline grade is stated on the inside
of the fuel filler door .
The vehicle is equipped with a catalytic converter
and must only be driven with
unleaded gasoline .
Audi recommends using TOP TIER Detergent Gas­
oline. Additiona l information on TOP TIER Deter­
gent Gasoline can be found on the official web­
site (www .topt iergas.com).
The individual gasoline grades are differentiated
by
octane ratings. T his value is given with (R +M)/
2 equating to AKI or in RON.
The following headings match the corresponding
sticker in the fuel fi ller door.
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular/ MIN. RON 91 Regular
Use regu lar gasoline with minimum 87 AKI/
91 RON
i::> (@ .
The maximum engine power is only reached if
premium gasoline 91 AKI/ 95 RON is used.
UNLEADED FUEL ONLY PREMIUM MIN . (R
+M)/2 91 / SUPER MIN. RON 95
Using premium gasoline with minimum 91 AKI/
95 RON is recommended.
If premium gasoline is not available, you can also
use regular gasoline 87 AKI/ 91 RON . However
this does reduce the engine power slightly.
({D) Note
-Fill in g the tank just one time with leaded
fuel or other metallic additives will cause
permanent deterioration to the catalytic
converter function.
- When gasoline with an octane rating that is
too low is used, high speeds or heavy engine
load can lead to eng ine damage.
Checking and Filling
(D Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine .
Blended gasoline
Applies to : vehicles wi th gasoli ne e ngi ne
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al ­
coho l or MTBE (commonly referred to as oxygen­
ates) if the blended mixture meets the following
criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
-Anti-knock index must be 87 AKI or higher.
- Blend must contain no more than
3% metha-
nol.
- Blend must contain more than
2% co-solvents.
Blend of gasoline and ethanol (grain alcohol or
ethyl alcohol)
-Anti-knock index must be 87 AKI or higher.
- Blend must not conta in more than
15% etha-
nol.
Blend of gasoline and MTBE
- Anti -knock index must be 87 AKI or higher.
- Blend must contain not more than
15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform es­
pecially well for winter or summer dr iving . Dur­
ing seasonal change-over, we suggest that you
fill up at busy gas stat ions where the seasonal
adjustment is more likely to be made in time .
@ Note
-Methanol fuels which do not meet these re­
quirements may cause corrosion and dam­
age to plast ic and rubbe r components in the
fuel system.
- Do not u se fuels that fail to meet the speci-
fied criteria in this chapter.
.,.
189

Checking and Filling
-If you a re unable to determine whether or
not a particular fuel blend meets the speci­
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 fuels differ­
ent from those specified a re not the respon­
sibility 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 problems 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 manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use.
Although gasoline grades differ from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on vital engin e
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 TI ER Dete rgent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline , please go to the official website
(www .toptiergas .com) .
After an extended per iod of us ing inadequate
fuels, carbon deposit build-ups can rob your
en­
gine of peak performance.
(D Note
Damage or malfunction due to poor fuel qual­
ity is not covered by the Audi New Vehicle Limited Warranty.
190
Refueling
Fueling procedure
Fig. 17 4 R ig ht re ar sid e o f th e ve hicle: o penin g th e fu el
filler door
Fig. 175 F uel fille r doo r with at tached fuel cap
The fuel filler door is unlocked or locked by the
central locking system.
.,. Press on the left side of the fuel filler door to
open
~ fig. 174.
.,. Unscrew the tank cap counterclockwise .
.,. Place the cap from above on the open fuel filler
door
~ fig.175.
.,. Insert the fuel pump nozzle all the way into the
fuel filler neck .
.,. Begin fueling. Once the fuel pump nozzle turns
off the first time, the fuel tank is full. Do not
continue fueling, or else the expansion space in
the tank will be filled with fuel.
.,. After the fuel pump has switched off, wait five
seconds before removing it to allow the rest of
the fuel to finish dripping into the fue l tank.
.,. Turn the fuel cap clockwise until you hear it
lock.
.,. Close the fuel filler door and then press on the
left side until it latches.
The correct fuel type for your vehicle can be
found on a label located on the inside of the fuel
.,.

Checking and Filling
Fuel filler door emergency release
If the central locking system is faulty, the fuel
filler door can be unlocked manually.
Fig . 17 6 Right side trim in the luggage compartment: re­
mov ing the tr im
Fig. 177 Luggage compartment: fuel filler door emergency
release
The emergency opening mechanism is located
behind the right side trim pane l in the luggage
compartment.
Removing th e side trim
• To remove the right side trim, first remove the
retaine r from the mounts
Q fig. 176.
• Turn both locking mechanisms 90° to the left
us ing a coin or a similar object and remove the
locking mechanisms.
• Tilt the retainer upward and pull the trim out.
Lay the trim down on its side, because there is
an electrical w ire for the socket* on the back .
Fuel filler door em ergenc y relea se
• Loosen the strap from its bracket and pu ll on it
Q fig. 177 c:t,(I). The filler door is released.
•Presson the left side of the fuel f iller door to
open it
<=:>page 190, fig. 174.
192
(D Note
Only pu ll on the loop until you feel resistance .
You will not hear it re lease . Otherwise you
could damage the emergency release mecha­
nism.
Emissions control
system
Cat alytic converter
The vehicle may only be driven w ith unleaded
gaso line, otherwise the catalytic converte r will be
dest royed.
Never dr ive until the tank is completely empty.
The irregular supply of fuel that results from that
can cause engine misfires. Uncombusted fuel will
enter the exhaust system, which can cause over­
heating and damage to the catalytic converter.
&_ WARNING
The temperat ure of the exhaust system is
h igh, both when drivi ng and a fter stopp ing
the engine.
-
- Never tou ch the exhaust tail pipes once they
have become hot. This cou ld resu lt in burns.
- Do not park your vehicle over flammable
materials s uch as grass or leaves because
the hig h temperature of the emissions con­
trol system could start a fire .
- Do not apply unde rbody protectant in the
exhaust system area, beca use this increases
the risk of fire.