temperature AUDI A8 2021 Owner's Guide

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Trailer towing

Trailer towing
Driving with a trailer
eT e e eeu)
Your vehicle is primarily intended for transport-
ing people and luggage. However, if you drive
with a trailer, follow the technical requirements,
the operation and driving tips, and the legal reg-
ulations.
Driving with a trailer affects the vehicle's energy
usage, performance, and wear. It also requires
higher concentration from the driver.

Z\ WARNING
Do not transport any people in a trailer due to
the risk of fatal injury.
Technical requirements
Trailer hitch

Only use a trailer hitch with a removable ball
hitch mount and ball hitch. The trailer hitch must
be permitted for the vehicle, the trailer and the
permitted total weight of the trailer being
pulled. Above all, it must be securely and safely
attached to the vehicle trailer.
Never mount a trailer hitch on the bumper. The
trailer hitch must be mounted in a way that does
not impair the function of the bumper. Do not
make any changes to the exhaust system and the
brake system.
Check regularly if the trailer hitch is securely
mounted. Always follow the instructions given by
the trailer hitch manufacturer.
Trailer brakes
If the trailer has its own brake system, then fol-
low the manufacturer specifications. However,
the brake system on the trailer must never be
connected to the vehicle brake system.
Engine cooling system
Driving with a trailer means a higher load on the
engine and the cooling system. The cooling sys-
tem must be designed for additional load and
contain enough coolant > @®.
CG) Note
Longer inclines cannot be driven without a
suitable cooling system, especially if the out-
side temperatures are high. Otherwise, this
increases the risk of engine damage.
Operating instructions
Towing capacity
Your vehicle can only be operated with class 1 or
class 2 trailers.
Load distribution
Poor cargo load and distribution can negatively
impact vehicle handling. Load the trailer based
on the following criteria as much as possible:
— Store objects in the vehicle luggage compart-
ment, if possible. The vehicle should always
carry the heaviest possible load and the trailer
should have the lightest possible load.
— Distribute the load in the trailer so that the
heavy objects are as close to the axle as possi-
ble.
— Secure objects so that they do not slide.
— Utilize the maximum permitted tongue weight
if possible.
Tires
Set the tire pressure on your vehicle for a “full
load”; see the tire pressure sticker > page 299. If
necessary, also adjust the tire pressure on the
trailer according to the manufacturer's specifica-
tions.
The trailer and the vehicle should be equipped
with winter tires when driving in winter tempera-
tures.
Outside mirrors
If you cannot see the traffic behind the trailer
with the standard exterior mirrors, then you
must attach additional exterior mirrors. Adjust
them so you have a sufficient visibility behind
you.
Exterior lighting
Follow the legal regulations for lighting on your
trailer that are applicable in the country where
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Trailer towing

Hill
When you start driving uphill or downhill, trailers
may tilt or sway sooner than when driving ona
level surface. If small swaying movements have
already occurred, you can stabilize the trailer by
firmly braking immediately. Never attempt to
“straighten out” the trailer by accelerating.
Conventional drive system: Downshift before
driving on hills to utilize the engine braking ef-
fect SA.
Plug-in hybrid drive system: Reduce the speed
and use the recuperation braking effect
=> page 114 to relieve the brakes > A.
Brakes
When using a trailer with overrun brakes, first
brake gently then quickly. This reduces the risk of
jerking while braking if the trailer wheels lock up.
Engine coolant temperature
Pay attention specifically to the coolant tempera-
ture display when there are high outside temper-
atures, and when driving on long inclines
=> page 14. Shift to a higher gear in a timely man-
ner.

Z\ WARNING
Constant braking causes the brakes to over-
heat and can substantially reduce braking per-
formance, increase braking distance, or cause
complete failure of the brake system.

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Driving information

After completing a lap, the difference between
the last lap and the previous best lap time will be
indicated with a “~” or “+”.
Pausing timing and displaying a split time
> To insert a pause @ select Pause in the menu.
> To resume timing, select Resume in the menu.
> To display a split time, select Split time in the
menu. The split time appears for approxi-
mately ten seconds in the instrument cluster.
The current lap timing will continue running.
Canceling lap timing
The timing of the current lap will stop. The lap
time will be erased and will not be included in the
statistics.
>» Select Cancel lap in the menu.
Resetting the time
> Select Reset lap times in the menu.
@ Tips
—A maximum of 99 lap times can be meas-
ured.
— If timing is paused, you can continue it later
even if you switch the ignition off.
— Saved lap times cannot be individually de-
leted from the total results.
— The saved lap timer values will remain after
switching the ignition off.
Lap stati
Applies to: vehicles with lap timer

Displaying lap statistics
You can display the number of laps driven ES
the fastest lap “+”, the slowest lap “~”, and the
average time “®” in the instrument cluster.
> Select in the instrument cluster: Vehicle func-
tions tab > I button > Lap statistics.
> Turn the thumbwheel down or up to display the
individual lap times.
> To return to the lap timing that was started, se-
lect the [J button > Lap times.
Resetting lap statistics
Requirement: the lap statistics menu must be
displayed.
> To reset the lap statistics, press and hold the
left thumbwheel until the message No lap
times have been recorded yet. appears.
@) Tips
The lap statistics list the lap times for the last
30 laps. The fastest and slowest lap times out
of up to 99 measured laps are also displayed.
Night vision assist
Applies to: vehicles with night vision assist
Night vision assist helps you when it is dark by
using an infrared camera to monitor the area in
front of your vehicle, within the limits of the sys-
tem. It can display objects up to a distance of ap-
proximately 1000 feet (300 m).
Pedestrian and wild animals are detected by
measuring the temperature difference between
the object and the background. Pedestrians and
wild animals will not be detected if the tempera-
ture difference is too small. The pedestrian and
wild animal marking feature is deactivated at
temperatures above approximately 77 °F (25 °C)
and when it is light outside.
The thermal image detected by the camera is dis-
played in the instrument cluster. Warm areas
generally appear lighter and cold areas appear
darker.
The camera for the night vision assist is located
in the vehicle's radiator grille > page 152. Make
sure the night vision camera is not covered by
stickers, deposits, or any other obstructions be-
cause this can impair the night vision assist func-
tion. Follow the information about cleaning
=> page 310.

ZX WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 150. >

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Telephone

Charging a mobile device wirelessly
Applies to: vehicles with Audi phone box
Depending on vehicle equipment, you may be
able to charge your mobile device wirelessly with
the Audi phone box.
Requirement: the ignition must be switched on.
Your mobile device must meet the Qi standard.
> Make sure that the wireless charging function is
switched on:
>» Applies to: MMI: Select on the home screen:
SETTINGS > General > Reminder signal and
mobile device charging.
> Applies to: vehicles without Audi phone box in
the rear: Switch the Mobile device wireless
charging function on.
> Applies to: vehicles without Audi phone box in
the rear: Switch the Mobile device wireless
charging in front or Mobile device wireless
charging in rear function on.
Applies to: vehicles with front Audi phone box
> Fold open the holder for the Audi phone box (@)
=> page 211, fig. 153.
> To charge your mobile device wirelessly, lay
your device with the rear side against the 9
symbol @) between the Audi phone box and
holder @).
Applies to: vehicles with Audi phone box in the rear
> To charge your mobile device wirelessly, lay it
on the @ symbol @ > page 211, fig. 154 in the
center of the Audi phone box with the display
facing up.

ZA WARNING
— The mobile device may become hot during
wireless charging. Pay attention to the tem-
perature of your mobile device and be care-
ful when removing it from the Audi phone
box.
— An alternating magnetic field is used for
wireless charging. Maintain a minimum dis-
tance of approximately 2.4 inches (6 cm) to
the Audi phone box charging plate. The
thresholds for prolonged exposure at this
distance comply with ICNIRP1998. There-
fore, interactions such as irritation of senso-

ry organs, malfunctions of active implants
(such as pacemakers, infusion pumps, or
neurostimulators) or effects on passive im-
plants (such as prosthetic limbs) is highly
unlikely. If you have an implant, consult a
medical specialist if you have any questions.
You can also switch the function for wireless
charging in the Audi phone box on or off
separately for the front* and rear*. You can
continue to charge your mobile device using
a cable connection.
@ Tips
—The maximum charging output is 5 W.


— The charging time and temperature will vary
depending on the mobile device being used.
Mobile device reminder signal
Applies to: vehicles with Audi phone box
When the device reminder signal is switched on,
you will be notified that your mobile device is still
in the Audi phone box when you leave the vehicle.
Requirement: your mobile device must be located
in the Audi phone box (if Qi-capable) or connect-
ed to the Audi music interface with a USB adapt-
er, and the Audi smartphone interface must be
active or your iPhone must be connected to the
MMI via Bluetooth and charging using a USB
adapter
connected to the Audi music interface.
> Applies to: MMI: Select on the home screen:
SETTINGS > General > Reminder signal and
mobile device charging.
The following settings may be available, depend-
ing on vehicle equipment:
— Signal tone
— Off
Spoken cue
this setting is switched on at the factory.
Mobile device notes: reminder, charge level
When this function is switched on, the charge
status of your mobile device is displayed. You will
also be reminded not to forget your mobile de-
vice when leaving the vehicle.
213

Media

Media
General information
There may be different media sources and con-
nections available depending on the vehicle
equipment. For example, you can play media files
using a connected USB drive or connect your mo-
bile devices to the Audi music interface and oper-
ate them through the MMI.
Media and format restrictions: the MMI (includ-
ing the USB storage device connection) was test-
ed with a variety of products and media on the
market. However, there may be cases where indi-
vidual devices or media and audio/video files may
not be recognized, may play only with restric-
tions, or may not play at all.
Restricted functionality: reset the MMI to the
factory default settings if functionality is restrict-
ed > page 264.
Digital Rights Management: please note that
the
audio/video files are subject to copyright pro-
tection.
Files that are protected by DRM and are identi-
fied with the symbol f@ will not play.
Data security: never store important data on
CDs/DVDs or mobile devices. Audi is not responsi-
ble for damaged or lost files and media.
Loading times: the more files/folders/playlists
there are on a storage medium, the longer it will
take to load. To reduce the amount of time it
takes the audio/video files to load, use a storage
medium that only contains audio/video files, and
create subfolders (for example, for each artist or
album).
Additional information: when playing, audio
files are automatically displayed with any addi-
tional information that is stored (such as the ar-
tist, track and album cover). If this information is
not available on the medium, the MMI will revert
to the local Gracenote metadata database or
search online if necessary. See > page 258, On-
line additional data. However, in some cases, the
additional information may not be displayed.
250
@) Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
=@ in General information on page 222.
DVD drive
General information
Applies to: vehicles with a DVD drive
The functionality of individual storage mediums
may be limited due to the variety of blank CDs/
DVDs available and the various capacities. Audio
CDs or video DVDs with copy protection, CDs/
DVDs that do not conform to the standard, and
multisession CDs may have limited playback or
may not play at all. Audi recommends finalizing
the recording process when creating multisession
CDs. Multisession DVDs are not supported.
(1) Note
To reduce the risk of damaging the drive and
data carriers:
— Always store data carriers in a protective
sleeve and do not expose them to direct
sunlight
— Do not use damaged, dirty, or laminated da-
ta carriers
— Do not use single CDs/-DVDs with a 3.1 inch
(8 cm) diameter, non-circular CDs/DVDs
(shaped CDs), cleaning CDs, and protective
rings
— Never force CDs/DVDs into the drive. Discs
are pulled in automatically.
G) Tips
The thermal protection switch stops playback
temporarily when outside temperatures are
too high.

Media

» Applies to: MMI: Select on the home screen:
MEDIA > Source > Amazon Alexa.
@) Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
> page 222.
Multimedia connections
USB adapter cable

[RAH-9202

Fig. 172 Audi Genuine Accessories: USB adapter
You can connect your mobile devices through the
Audi music interface to the MMI using the USB
adapter and charge the battery at the same time.
You can purchase the USB adapter cable from an
authorized Audi dealer or at specialty stores:
@ USB adapter for devices with a mi-
cro USB connection
@ USB adapter for Apple devices with
a Lightning connection
@ USB adapter for devices with USB
type C connection
@) Note
Handle the USB adapter carefully. Do not al-
low it to be pinched.
G) Tips
Apple devices with a dock connector can only
be charged using a USB adapter designed for
devices with a dock connector. Data cannot be
transmitted.
252
ONU reat em Tale)
Connect your mobile devices to the Audi music in-
terface in order to operate them through the
MMI and charge the batteries.
The Audi music interface USB ports are located in
the storage compartment under the front and
rear* center armrest and are labeled with the +<
symbol. If multiple USB devices are connected to
the USB ports (for example, a smartphone and a
USB flash drive), all of these devices can be used
as the playback source.
Connecting or charging mobile devices using
a USB adapter
> Connect the matching USB adapter to the Audi
music interface USB port and connect it to the
mobile device, such as a smartphone.
The battery will charge automatically.
Mobile devices connected to the Audi music inter:
face can be started and operated using the MMI
=> page 253.
Disconnecting a mobile device from the Audi
music interface
> Remove the USB adapter cable from the Audi
music interface.

ZA\ WARNING
Driving requires your complete and undivided
attention. As the driver, you have complete re-
sponsibility for safety in traffic. Never operate
mobile devices while driving, because this in-
creases the risk of an accident.
@) Note
— Pull the cable out of the Audi music inter-
face carefully so that the USB ports are not
damaged.
— Use a USB extension cable to connect devi-
ces that have an integrated USB connector
(such as a USB stick) to reduce the risk of
damage to your USB device and the Audi
music interface.
— Extremely high or low temperatures that
can occur inside vehicles can damage mobile
devices and/or impair their performance.

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Media

Never leave mobile devices in the vehicle in
extremely high or low temperatures.
@ Tips
— Always follow the information found in
=> page 94.
— When you switch the ignition off, the USB
ports are still supplied with power until the
energy management intervenes.
— Do not use an additional adapter cable or
USB extension cable to connect mobile devi-
ces to the Audi music interface that already
have a cable or that must be connected with
a USB adapter cable (> page 252, fig. 172).
Using an additional adapter or US extension
cable may impair functionality.
— Functionality is not guaranteed for mobile
devices that do not conform to the USB 2.0
specification.
— USB hubs are not supported.
— Video playback through the Audi music in-
terface is not supported on Apple devices
and MTP devices (such as smartphones).
— iPod touch or iPhone malfunctions also af-
fect the operation of the MMI. Reset your
mobile device in these situations.
— Audi recommends updating the iPod touch
or iPhone software to the latest version. Re-
fer to your mobile device owner's manual
for more information.
— The USB adapter on the Audi music inter-
face will support iPod touch or iPhone devi-
ces from the 5th generation or newer with
the lightning connector.
—Aselection of supported devices can be
found in the database for tested mobile de-
vices at www.audi.com/mp3.
Playing media
The following sources can be selected depending
on the vehicle equipment:
— Amazon Alexa > page 251.
— USB device > page 252.
— DVD © page 251.
— External device: you can connect external devi-
ces via Bluetooth and use the Bluetooth audio
player > page 251, or you can connect an exter-
nal device directly to the Audi music interface
=> page 252.
Accessing media
Playing media files using the MMI
> Applies to: MMI: Select on the home screen:
MEDIA > Source > a source. Depending on the
connected device, the symbol for a source may
change. The device name may be displayed (for
example: myPhone).
> Select a track from the categories in the media
center > page 254.
Playing media files using the multifunction
steering wheel
Requirement: a media source must contain me-
dia files > page 253.
> Select the radio/media tab in the instrument
cluster.
> Turn the left thumbwheel to display the play-
list.
> To switch to a different source, press the
button.
> To select a media file or a source, turn and
press the left thumbwheel.
> To switch between radio and media, select in
the instrument cluster: the LE] button > Switch
to radio/Switch to media.
Playing media files using the Rear Seat
Remote
Applies to: vehicles with Rear Seat Remote
Requirement: the Rear Seat Remote must be con-
nected to the MMI > page 28.
> Applies to: Rear Seat Remote: Press MEDIA on
the home screen.
Operation of the available media functions with
the Rear Seat Remote is very similar to operation
in the MMI > page 255.

Z\ WARNING
Observe the safety precautions > page 26,
Rear Seat Remote. >

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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:
— Automatically set date and time
— Date format
— Time format
— Automatic time zone
— Time zone
Measurement units
> Applies to: MMI: Select on the home screen:
SETTINGS > General > Measurement units.
Possible settings:
— Speed
— Distance
— Temperature
— Volume
— Pressure
— Consumption (engine)
— Consumption (electric motor)
Language and keyboard
> Applies to MMI: Select on the home screen:
SETTINGS > Language & keyboard.
Language
You can change the languages for the display,
navigation announcements, and the voice recog-
nition system.
Keyboard
See > page 25.
Requirement: an audio source must be active.
> Applies to MMI: Select on the home screen:
SETTINGS > Sound.
> Applies to: Rear Seat Remote: Select 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.
Announcements and tones
> Applies to: MMI: Select on the home screen:
SETTINGS > Announcements & tones.
Possible settings:
— Announcement volume
— Welcome sound

ZA WARNING
Adjust the volume of the audio system so that
signals from outside the vehicle, such as po-
lice and fire sirens, can be heard easily at all
times. >

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Checking and Filling

Fuel filler door emergency release
Applies to: vehicles with manual fuel filler door release

If the central locking system malfunctions, the
fuel filler door can be unlocked manually.



Fig. 177 Right cover in the luggage compartment: remov-
ing the cover



Fig. 178 Luggage compartment: fuel filler door emergency
release
The emergency opening mechanism is located
behind the right cover in the luggage compart-
ment.
> Remove the screwdriver from the vehicle tool
kit > page 317.
> Carefully insert the flat side of the screwdriver
from below into the center of the top slot in the
cover > fig. 177.
> 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. 178 > ©.
> Press on the left side of the fuel filler door to
open it > page 271, fig. 175.
® 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
ZA\ 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.
— 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
Observe the safety precautions > page 273, Gen-
eral 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 >
273

Checking and Filling

cause overheating and damage to the catalytic
converter.
Malfunction Indicator Lamp (MIL)
If the S 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
safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area in the vehicle. > A.
Explanation of warnings (sticker in the engine
compartment):
®

Hot engine components!
Rotating parts!

The catalytic converter can be damaged
"127i if the oil level is too high!

Always follow the instructions in the op-
oA erating manual.



The radiator fan can switch on at any
i, time!

High voltage! Switch off the engine be-
5 fore coming into contact with any igni-
tion system components!



Applies to: vehicles with plug-in hybrid
drive: High voltage! The voltage in the
high-voltage system is high enough to
EN cause fatal injuries. Touching a damaged
high-voltage component can result in a
fatal electric shock.


D_ Depending on the engine and country
274

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. 181. 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
only 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.