engine AUDI A8 2020 Service Manual

4N0012721BD
Navigation

Intelligent search for navigation
eld lary
Applies to: vehicles with navigation system
Using the intelligent search, you can enter the
data for a navigation destination in any order all
at once (for example, Sth Avenue New York). You
can search for points of interest, contacts, previ-
ous destinations, received destinations, and
routes or favorites to navigate to the desired
destination.
Opening a menu
> Applies to: MMI: Select on the home screen:
NAVIGATION > ©
Intelligent search
» Enter one or more search terms into the input
field. See > page 24, Text input.
> Press on the desired destination in the results
list. The Details menu will be displayed.
> Press Start. Route guidance will be activated
and the map will be displayed > page 231,
fig. 163.
If the MMI is connected to the Internet
=> page 216, Audi connect, the Intelligent search
automatically includes results from the Internet.
See >.
Change search area
Requirement: route guidance must be active.
> Applies to: MMI: Select on the home screen:
NAVIGATION > ©
> To change the search area, press 2:9 / (a) /
Rim table on page 229 repeatedly until the de-
sired search area is selected.
Online search!)
Applies to: vehicles with navigation system and online search
You can use the results from a search engine pro-
vider to find a navigation destination.
Requirement: the MMI must be connected to the
Internet > page 216, Audi connect.

) Audi provides access to services from third party provid-
ers. Permanent availability cannot be guaranteed, because
that depends on the third party provider.
> Applies to: MMI: Select on the home screen:
NAVIGATION > © > G.
> Enter one or more search terms into the input
field.
> The search engine provider shows suggestions
£ to narrow down the search.
> Press on suggestions until the desired destina-
tion appears in the results list. If necessary, use
one finger to swipe upward or downward until
the suggestions © or destinations appear.
> Press on the desired destination 9. The Details
menu will be displayed.
> Press Start.
Route guidance will be activated and the map will
be displayed. page 231, fig. 163
CG) Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
=@ in General information on page 216.
@) Tips
— The MMI input suggestions depend on the
last navigated destinations.
— The navigation system always searches for
the fastest route. You can find information
on alternative routes under > page 234.
Entering an address
Applies to: vehicles with navigation system
As an alternative to the intelligent search, you
can also enter an address in stages.
Opening a menu
> Applies to: MMI: Select on the home screen:
NAVIGATION > (8) > Enter address.
Enter a destination using an address
> Press on the respective input field and enter an
address.
> Press Apply. The Details menu will be dis-
played.
> Press Start.
227

Additional settings

Additional settings
System settings
Introduction
General settings are described in this chapter.
You can find specific settings in the chapters
about those settings. The available settings de-
pend on the vehicle equipment.
Date and time
> Applies to: MMI: Select on the home screen:
SETTINGS > General > Date & time.
Possible settings:
— Set date and time automatically
— Date format
— Use 24h time format
— Automatic time zone
— Time zone
— Automatic daylight saving time
— Manual daylight saving time
CET Tnat tala Lah ay
> Applies to: MMI: Select on the home screen:
SETTINGS > General > Measurement units.
Possible settings:
— Speed
— Distance
— Temperature
— Pressure
— Consumption (engine)
— Consumption (electric motor)
— Volume
Language and keyboard
> Applies to MMI: Select on the home screen:
SETTINGS > Language & keyboard.
266
Language
You can change the languages for the display,
navigation announcements, and the voice recog-
nition system.
Keyboard
See > page 24.
Requirement: an audio source must be selected.
> Applies to MMI: Select on the home screen:
SETTINGS > Sound.
> Applies to: Rear Seat Remote/Audi tablet: Se-
lect on the home screen: Sound.
Possible settings:
— Treble
— Bass
— Balance/fader
— Speed-dependent volume control
— Subwoofer
— Surround Level
Focus
You can optimize the sound distribution for vari-
ous locations in the vehicle.
3D effect
You can adjust the intensity of the 3D effect.
With the Medium setting, you will hear an opti-
mal 3D effect for all sources.
Factory settings
Applies to: Rear Seat Remote: You can reset the
sound settings.
Restore factory settings
Applies to: Audi tablet: You can reset the sound
settings.
Announcements and tones
> Applies to: MMI: Select on the home screen:
SETTINGS > Announcements & tone.

4N0012721BD
Additional settings

Bluetooth profiles
You can switch desired profiles on or off sepa-
rately in the MMI.
Favorite
To set a paired mobile device as the default
phone, activate this function in the MMI.
When the mobile device is in range and the Blue-
tooth function on the mobile device and in the
MMI is switched on, the default phone will be
given priority over the other Bluetooth devices
and will be connected directly to the MMI.
Legal information
General information
Information on the software licenses can be
found online at www.audi.com/softwareinfo.
SelgureC mm aM ae
> Applies to: MMI: Select on the home screen:
SETTINGS > General.
License subscription
Version information
Legal information
Possible options:
— Software information
— About Audi connect
Teta ed)
Applies to: vehicles with Rear Seat Remote
> Applies to: Rear Seat Remote: Select on the
home screen: SETTINGS
Possible options:
— Software information
— Legal information
Audi tablet
Applies to: vehicles with Audi tablet
> Applies to Audi tablet: Select on the home
screen: SETTINGS > About the tablet.
Legal information
Information on licenses and legal information
can be accessed.
Regulatory information
Information about the device’s conformity with
applicable regulations will be displayed.
PAU ae eM ars]
Applies to: vehicles with Audi smartphone interface
Requirement: a smartphone must be connected
to the MMI > page 264.
> Applies to: MMI: Select on the home screen:
SETTINGS > Connected devices > Audi smart-
phone interface.
> Press and hold an item until the associated op-
tions are displayed.
> Press Legal notes.
sida area
Requirement: the vehicle must be stationary.
> Select in the instrument cluster: Vehicle func-
tions tab > page 13.
> Press the E] button on the multifunction steer-
ing wheel until the display appears.
Possible options:
— Engine code
— Software information
— Version information
Head-up display
Applies to: vehicles with head-up display
> Applies to: MMI: Select on the home screen:
SETTINGS > Display & brightness > Head-up
display > Display contents > Show the license
text in the head-up display. Information on
your licenses will be displayed.
269

Checking and Filling

Checking and Filling
Fuel
Types of gasoline
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. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
The individual gasoline grades are differentiated
by octane ratings. This value is given with (R
+M)/2 equating to AKI or in RON.
The headings below match the sticker in the fuel
filler door (examples):
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular / MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI /
91 RON > ©.
Audi recommends using premium gasoline with
minimum 91 AKI / 95 RON to achieve the rated
horsepower and torque.
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.
() Note
— Filling 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 engine damage.
270
G) Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine.
Gasoline mixture
Gasoline with alcohol or MTBE (Methyl-Tert-
Butyl-Ether)
You can use unleaded gasoline mixed with alco-
hol or MTBE (generally labeled as oxygenated
compounds) as long as the fuel meets the follow-
ing conditions:
Gasoline with methanol content (methyl alco-
hol
or methanol)
— Anti-Knock Index is at least 87 AKI
—No more than 3% methanol
— More than 2% solvent
Gasoline with ethanol content (ethyl alcohol or
ethanol)
— Anti-Knock Index is at least 87 AKI
—No more than 15% ethanol
Gasoline with MTBE content
— Anti-Knock Index is at least 87 AKI
—No more than 15% MTBE
Gasoline adapted to the season
Many gasoline fuels are adapted to the seasons.
When the season changes, we recommend refu-
eling at high-traffic gas stations. It is more likely
that the gasoline will be suitable for the season
there.
() Note
— Gasoline with methanol content that does
not meet the specified conditions may cause
corrosion damage and damage to plastic or
rubber components in the fuel system.
— Do not use gasoline that does not meet the
specifications.
— If you are unable to find out if a specific gas-
oline mixture meets the specifications, ask
the gas station operator or their fuel suppli-
er.

4N0012721BD
Checking and Filling

— Do not use any gasoline mixture whose
composition cannot be identified.
— Audi does not assume any responsibility for
damage to the fuel system or for perform-
ance problems caused by using gasoline
mixtures different from those specified.
This type of damage also does not fall under
the New Vehicle Limited Warranty or under
the emissions control system warranty.
— If you notice a higher fuel consumption or
poor handling or performance problems due
to such gasoline mixtures, we recommend
fueling with unblended gasoline.
Gasoline additives
An important issue for many automobile manu-
facturers is combustion residue in the engine
that results from the use of certain fuels.
Although types of gasoline differ depending on
the manufacturer, there are similarities. Certain
substances in the gasoline may cause deposits in
the engine. Additives in the gasoline that should
keep the engine and fuel system clean do not all
function equally.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
If you use incorrect fuels over a long period of
time, the maximum engine performance may be
impaired by combustion residue.
@) Note
— Damage or malfunctions caused by the use
of incorrect types of gasoline are not cov-
ered by the New Vehicle Limited Warranty.
— Only gasoline additives that have been ap-
proved by Audi may be used.
Refueling
Fueling procedure


Fig. 177 Right rear side of the vehicle: opening the fuel
filler door
B8V-0559

Fig. 178 Fuel filler door with attached fuel cap
The fuel filler door is unlocked or locked by the
central locking system.
>» Unlock the vehicle if necessary.
> Conventional drive system: Press on the left
side of the fuel filler door to open it > fig. 177.
> Plug-in hybrid drive: Pull the A) button in the
driver's door. The fuel filler door will open auto-
matically after venting is complete.
> Unscrew the tank cap counterclockwise.
> Place the cap from above on the open fuel filler
door > fig. 178.
>» Plug-in hybrid drive: note the information for
refueling at the end of this chapter.
> 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 the nozzle toallow >
271

Checking and Filling

the rest of the fuel to finish dripping into the
fuel tank.
> Turn the fuel cap clockwise until it clicks into
place.
> 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 ona label located on the inside of the fuel
filler door. For additional information on fuel, see
=> page 270.
For the tank capacity in your vehicle, refer to the
Technical Data > page 342.
To reduce the risk of fuel leaking out or vapors
escaping, make sure that the fuel tank is closed
correctly. Otherwise the Ey indicator light will
turn on.
If the central locking system malfunctions, there
is a fuel filler door emergency release
=> page 273.
Messages
Al Tank system: malfunction! Please contact
Service
There is a malfunction in the fuel tank system.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
Messages
Applies to: vehicles with plug-in hybrid drive
Ay Fuel filler door: malfunction! Unlock fuel
filler door manually. See owner's manual
There is a malfunction. You must manually un-
lock the fuel filler door > page 273.
Al Warning! Vehicle performance may be limit-
ed
The fuel tank is almost empty. You must antici-
pate a significant power loss. Refuel immediate-
ly.
Ay Fuel filler door open. Please press button
again to refuel

1) Depending on the engine and country
272
Fueling is possible for a little while after pressing
the fl} button. You must press the ff) button
again if the time limit is exceeded.

Z\ WARNING
Improper fueling procedures and improper
handling of fuel can lead to explosions, fires,
severe burns, and other injuries.
— Do not smoke. Keep away from open flames.
— The ignition must be switched off when re-
fueling.
— Mobile devices, radio devices, and other ra-
dio equipment should always be switched
off when refueling. Electromagnetic rays
could cause sparks and start a fire.
— If you do not insert the fuel pump nozzle all
the way into the filler tube, then fuel can
leak out. Spilled fuel can ignite and start a
fire.
— Never get into the vehicle when refueling. If
there is an exceptional situation where you
must enter the vehicle, close the door and
touch a metal surface before touching the
fuel pump nozzle again. This will reduce the
risk of electrostatic discharge that can cause
flying sparks. Sparks can start a fire when
refueling.

ZA\ WARNING
Transporting fuel containers inside the vehicle
is not recommended. Fuel could leak out of
the container and ignite, especially during an
accident. This can cause explosions, fires, and
injuries.
— If you must transport fuel in a fuel contain-
er, note the following:
— Always place the fuel container on the
ground before filling. Never fill the fuel
container with fuel while it is inside or on
the vehicle. Electrostatic discharge can oc-
cur while refueling and the fuel vapors
could ignite.

Checking and Filling



— When using fuel containers made of met- — You must vent the tank system again if you
al, the fuel pump nozzle must always re- press on the fuel filler door opener. The fuel
main in contact with the container to re- pump nozzle can stay in the fuel filler neck
duce the risk of static charge. when doing this. Vent the tank system by
— Insert the fuel pump nozzle as far as pos- pulling the E) switch in the driver's door
sible into the filler opening while refuel- again.
ing. — If the engine turned off because the fuel
— Follow the applicable legal regulations in level was too low, then you may need to re-
the country where you are driving when fuel with up to 4.0 gallons (15 liters) of fuel
using, storing and transporting fuel con- in order for the vehicle to detect the new
tainers. fuel level. Otherwise, the engine may not
— Make sure that the fuel container meets restart.
the industry standards, for example ANSI — Fuel can age and may lead to problems
or ASTM F852-86. when starting. Audi recommends replacing

4N0012721BD
the fuel in your vehicle within six months.
@) Note
— Remove fuel that has overflowed onto any Fuel filler door emergency release
vehicle components immediately to reduce Applies to: vehicles with manual fuel filler door release
the risk of damage to the vehicle. If the central locking system malfunctions, the
— Never drive until the fuel tank is completely fuel filler door can be unlocked manually.
empty. The irregular supply of fuel that re-
sults from that can cause engine misfires.
Uncombusted fuel may enter the exhaust
system and increase the risk of damage to
the catalytic converter.

@ For the sake of the environment
— Do not overfill the fuel tank, or fuel could
leak out when the vehicle is warming up.
— Fuel should never enter the sewer system or
come into contact with the ground.
@ Tips
The fuel filler door on your vehicle does not
lock if you lock the vehicle from the inside us-
ing
the central locking switch.
G@) Tips
Applies to: vehicles with plug-in hybrid drive


Fig. 179 Right cover in the luggage compartment: remov-
ing the cover
— When inserting the fuel pump nozzle, make
sure that you do not press on the fuel filler
door opener @) with the fuel pump nozzle.



Fig. 180 Luggage compartment: fuel filler door emergency
release
See the label in the fuel filler door @)
> fig. 178. Otherwise, a valve will close in The emergency opening mechanism is located
the fuel filler neck and fueling will stop even behind the right cover in the luggage compart-
if the tank is not full. ment.
273

Checking and Filling

> Remove the screwdriver from the vehicle tool
kit > page 316.
> Carefully insert the flat side of the screwdriver
from below into the center of the top slot in the
cover > fig. 179.
> Use the screwdriver to pull the cover toward the
center of the vehicle and remove the cover.
> To unlock the fuel filler door, loosen the red
loop from the retainer and then pull on the
loop carefully > fig. 1802 ©.
> Press on the left side of the fuel filler door to
open it > page 271, fig. 177.
@ Note
Only pull on the loop until you feel resistance.
You
will not hear it release. If you continue to
pull, you could damage the emergency re-
lease mechanism.
@ Tips
Applies to: vehicles with plug-in hybrid drive
— The tank will not be vented if the emergency
release function was used on the fuel filler
door. You can only fill a small amount of
fuel in the tank. Fill only until the fuel pump
nozzle turns off for the first time. Drive to
an authorized Audi dealer or authorized
Audi Service Facility immediately to have
the malfunction corrected.
— Pressure can escape if you open the tank cap
after using the emergency release. This can
create noises.
Emissions control
system
General information
Z\ WARNING
The temperature of the exhaust system is
high, both when driving and after stopping
the engine.
— Never touch the exhaust tail pipes once they
have become hot. This could result in burns.



1) Depending on the engine and country
274

— Do not park your vehicle over flammable
materials such as grass or leaves because
the high temperature of the emissions sys-
tem could start a fire.
— Do not apply underbody protectant in the
exhaust system area, because this increases
the risk of fire.
Catalytic converter
Follow the safety precautions > page 274, Gener-
al information.


The vehicle may only be driven with unleaded
gasoline, or the catalytic converter will be de-
stroyed.
Never drive until the tank is completely empty.
The irregular supply of fuel that results from that
can cause engine misfires. Uncombusted fuel
could enter the exhaust system, which could
cause overheating and damage to the catalytic
converter.
Malfunction Indicator Lamp (MIL)
If the [J indicator light blinks or turns on, there
is a malfunction that is causing poor emissions
quality and that could damage the catalytic con-
verter. Drive slowly to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction corrected.
The indicator light can also turn on if the fuel fill-
er cap is not closed correctly page 271).
Engine compartment
General information
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 >

4N0012721BD
Checking and Filling

safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area in the vehicle. > A.


ZA WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the engine com-
partment.
— Never spill 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.
— Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.
— 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.
— Plug-in hybrid drive: the coolant expansion
tank cap is equipped with a seal that must
never be removed under any circumstances
= page 277, fig. 183. If the coolant expan-
sion tank for the high-voltage system is not
sealed, please contact an authorized Audi
dealer or authorized Audi Service Facility.
— Plug-in hybrid drive: the sealed cap must on-
ly be opened by an authorized Audi dealer or
authorized Audi Service Facility.
— The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure. There
is a risk of burns
— To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
— Due to the risk of electric shock, never touch
the ignition cable or other components in

the electronic high-voltage ignition system
when the engine is running or is starting.
— Ifa gear is engaged while the vehicle is sta-
tionary and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
— If inspections or repairs must be performed
while the engine is running, moving compo-
nents (such as the ribbed belt, generator,
and radiator fan) pose an additional risk.
— Set the parking brake first and select the
“P” (Park) selector lever position.
— Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine
components. Before any work, always re-
move any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.
— 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.
— Limit your exposure to exhaust and chemi-
cals to as short a time as possible.


ZA\ 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

275

Checking and Filling


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.
o Note
When filling fluids, be sure not to add any flu-
ids to the wrong reservoirs. Otherwise severe
malfunctions and engine 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 authorized Audi Service Facility to be
checked.
Opening and closing the hood
The hood is released from inside the vehicle.


Fig. 181 Footwell: release lever (example)

RAZ-0016,

Fig. 182 Unlocked hood: lever
276

Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
> Applies to: vehicles with plug-in hybrid drive:
Switch the ignition off before releasing the
hood so that the gasoline engine does not start
automatically.
> With the door open, pull the lever > below
the instrument panel in the direction of the ar-
row > fig. 181.
» Raise the hood slightly > page 274.
> Press the lever > fig. 182 in the direction of the
arrow. This releases the hooks.
> Open the hood.
Closing the hood
> Push the hood down until you override the
force of the strut.
> Let the hood fall lightly into the latch. Do not
press it in. > /\.
Message
B Warning! Hood is not locked. Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop im-
mediately and close the hood.

Z\ WARNING
— 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.
— For safety reasons, the hood must always be
latched securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ed.
— If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.