2018 AUDI A8 battery

Driving
Shift to P, otherwise vehicle can roll away.
Doors do not lock if lever is not in
P.
This driver message appears fo r safety reasons if
the transmission has not been shifted to the P
position when you switch the ignition off. Move
the selector lever to the P position . Otherwise the
veh icle is not protected from ro lling and it cannot
be locked.
(I Key is not recognized. Hold back of key
against marked area. See owner's manual
If the i ndicator light turns on and this message
appears, there is a
malfunction ~ page 78.
Turn off ignition before leaving car
This message appears if the driver's door is
ope ned while the ignition is switched on . Always
sw itch off the ignition if you are leavi ng the vehi­
cle .
Shift to P and turn off ignition before leav ing
car, otherwise vehicle can roll away
This message appears if the driver's door is
opened while the ignition is switched on and the
transmission has not been shifted to the P posi­
tion . Shift the transm iss ion into the P posit ion
and turn off the ign ition if you are leaving the ve­
h icle . Otherwise the vehicle could roll.
Starting the engine when there is a
malfunction
It may not be possible to start the engine under
certain circumstances, for example if the battery
in the vehicle key is drained, if interference is af­
fected the key or if there is a system malfunc­
tion .
c:====== ~
~ _____ ___ ci5
Fig . 91 Cente r console/remote cont ro l key : sta rt ing the
eng ine
if t here is a malfunc tion
78
Requirement: the message Key is not recog­
nized. Hold back of key against marked area .
See owner's manual
must appear and the (I i n ­
dicator light must turn on.
.,. Hold the remote control key vertically in the lo ­
cation indicated
y >l) ~ fig. 91 .
.,. Press the brake peda l.
.,. Press the I START ENGINE STOPI button. The
engine will start.
.,. Drive to an authorized Audi dealer or author ­
ized Aud i Serv ice Facility immediately to have
the malfunction corrected .
(0 Tips
You can v iew the message aga in by pressing
the
I S TAR T ENGINE STOP I button.
Start/Stop system
Description
Applies to: vehicles with Start/Stop syste m
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
In Start/Stop mode, the eng ine s hut s off auto­
matically when the vehicle is stopped, such as at
a traffic light . The ignition remains switched on
during this stop phase. The engine w ill restart
automat ically w hen needed.
The last Start/Stop system setting is restored
when the ignition is switched on.
Basic requirements for Start/Stop mode
- Th e driver's door must be closed.
- The driver's seat belt much be fastened.
- The hood must be closed .
- The vehicle must have dr iven faster than
2.5 mph (4 km/h) since the last t ime it stop ­
ped .
- A trailer must not be hitched to the vehicle .
A WARNING
-Never turn off the eng ine before the vehicle
has come to a complete stop . The full func­
tion of the brake booster and the power
steering is not guaranteed. You must use
more force to turn or brake. Because you

lL t:0 ....
"' " "' .... 0 0 :c ' cannot steer and brake as you usually
would, th is could lead to accidents and ser i­
ous injuries .
- To reduce the risk of injuries, make sure that
the Start/Stop system is turned off when
working in the engine compartment
i=> page80 .
(D Note
Always switch the Start/Stop system off when
driving through water
i::> page 80.
Starting/stopping the engine
App lies to: ve hicles with Start/Stop system
Fig. 92 Instrument cluste r: eng ine sw itched o ff (stop
p hase)
~ S low the vehicle to a stop us ing the brake and
keep pressing the brake pedal. The engine w il l
switch off. The
II indicator light appears in the
informa tion line in the instrument cluster dis­
play.
~ When you take your foot off the brake peda l,
the engine restarts. The indicator lig ht turns
off .
Additional information
The engine w ill switch off in the P, D, N and S po­
sitions as we ll as in manual mode . In the P posi ­
tion, the engine will also remain off if you take
your foot off the brake pedal. The engine starts
again when you se lect another selector lever po­
sition and take your foot off the brake pedal.
I f you select the R pos ition during a Stop phase ,
the engine will start again.
Shift from D to P quickly to p revent the engine
from star ting unintentionally when shifting
through R .
Drivi ng
You can de termine for yourse lf if the engine w ill
stop or not by reducing or increasing the amount
of force you use to press the brake pedal. For ex ­
amp le, if you only lightly press on the brake ped­
al in stop-and-go traffic or when turning, the en­
gine will not switch off when the vehicle is sta ­
t io nary . As soon as you press the brake down
harder, the engine w ill switch off .
(D Tips
-Press the brake pedal during a Stop phase
t o keep the vehicle from rolling .
- The ignit ion w ill turn off if you press the
! S T ART ENGINE STOPI button du ring a stop
phase.
General information
Applies to: vehicles w ith Start/Stop system
The standard Start/Stop mode can be canceled
for various system-related reasons.
Eng ine doe s not switch off
Before each stop phase, the system checks if cer ­
tain conditions have been met . If the
r,J indica­
tor light appears in the instrument cluster dis­
play, the eng ine will not be stopped, for example
in the following situations:
- The engine has not reached the minimum re­
quired temperature for Start/Stop mode.
- T he interior temperature selected by the cli-
mate control system has not been reached.
- The outside temperature is extremely high/low.
-The winds hie ld is being defrosted
~ page 71.
-The parking sys tem* is switched on .
- The vehicle battery cha rge level is too low .
- The steering wheel is tu rned at a sha rp angle or
is moving.
- After engaging the reve rse gear .
- On sharp incl ines.
Eng ine automatically restarts
T he standard Start/Stop mode wi ll be canceled
during a stop phase in the following situat ions .
The eng ine restarts without any action by the
driver .
79

Driving
-The inter ior temperature differs from the tem­
perature se lected in the A/C system.
-The windshield is being defrosted q page 71 .
-The brake pedal is pressed seve ral t imes in a
r ow.
-T he vehicle ba tte ry charge Leve l is too Low.
-Power consumption is high .
Ignition is switched off automatically
To prevent the veh icle battery from drain ing, the
ignit ion w ill switch off
automatically under the
following conditions:
-The vehicle has already been driven .
-The Start/Stop system has stopped the e ngine.
- T he driver's door is opened.
- T he dr iver's safety be lt is unb uckled.
- The brake pedal is not p ressed .
-The vehicle is stationary .
In this case, the activated low beam is replaced
by the parking Light. The parking Lights will
sw itch off after app roximately 30 minutes or
when you Lock the vehicle .
If the Start/Stop system has not turned off the
engine o r if you have sw itched the Start/Stop sys­
tem off manually, the ignition will not be auto­ mat ically switched off and the engine w ill contin­
ue to r un
q I!::::,. .
.&_ WARNING
To re duce the risk of poisoni ng, neve r allow
t he engine to r un in confined s paces.
(D Tips
If you select the D, N or S selector Lever posi­
tion after shifting into reverse, the vehicle
m ust be driven faster than 6 mph (10 km/h)
in orde r for the engine to switch off again.
80
-
Manually switching the Start/Stop system
off/on
Appl ies to : vehicles wi th Start/Stop sys te m
If you do not wish to use th e system, you con
switch i t off manually.
------------ ~
:i:
~
Fig . 93 Ce nte r conso le: Start/Stop system b utto n
.. To switch the Start/Stop system off/on man­
ually, press the
l (A) ~I button. The LED in the but­
ton turns on when the system is switched off.
(D Tips
If you switch the system off d uring a stop
phase, the engine will start aga in automati­
cally .
Messages in the instrument cluster display
Applies to: vehicles wit h Start/Stop syste m
Start-stop system deactivated: Please restart
engine manually
This message appears w hen spec ific conditions
are not me t du ring a stop phase. The S tart/S top
system will
not b e abl e to re st art the eng ine. If
the D or R se lector Lever positions were engaged,
P will be selected a utomat ically . The eng ine must
be started with the
I START ENGI NE STOPI but­
ton.
Start -stop system: System fault! Currently
unavailable
There is a ma lfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dea ler or
authorized Serv ice Facility as soon as possible to
have t he malfunction corrected .

Assistance systems
Switching on/off
Applies to: ve hicles w ith Aud i side ass ist
F ig. 122 Driver's door : side ass ist butto n
• Press the button to switch the system on and
off
c> .&, in General information on page 107 .
The LED in the button turns on when side assist
is sw itched on.
Setting the display brightness
App lies to: ve hicles with Aud i side ass is t
The display brightness can be adjusted in the In ­
fotainment system .
• Select : the ICARI function button > Car systems
control button > Driver assistance > Audi side
assist .
The display brightness adjusts automatically to
the br ightness of the surroundings, both in the
information and in the warning stage . In very
dark or very br ight surroundings, the automat ic
adj ustment will set the disp lay to the minim um
or maximum level. In such cases , you may notic e
no change when adjust ing the brightness, or the
change may only be noticeable once the sur­
ro undings change .
Adj ust the brightness to a level where the disp lay
i n the information stage will no t disrupt your
view ahead.
If you change the brightness, the dis­
p lay in the exter ior mirror wi ll briefly show the
brightness lev el in the information stage . T he
brightness of the warning stage is linked to the
brightness in the information stage and is adjust­
ed along with the information stage.
108
@ Tips
-Side assist is not active while you are mak­
ing the adjustment .
- Your settings are automat ica lly stored and
assigned to the remote control key being
used .
Messages
Applies to : vehicles wi th Audi side ass ist
If side assist switches off by itself, the LED in the
button turns off and a message will appear in the
i nstrument cluster display:
Audi side assist: Currently unavailable. No
sensor vision
The radar sensor vision is impaired . Do not cover
the area in front of the sensors with bike wheels,
stickers, dirt or ot her objects . Clean the area in
front of the sensors, if
necessary ¢ page 106,
fig. 121 .
Audi side assist: Currently unavailable
Side assist cannot be switched on at this time be­
cause there is a malfunction (for example, the
battery charge level may be too low).
Audi side assist: System fault!
The system cannot guarantee that it will detect
vehicles correctly and it has switched off. The
sensors have been moved or are faulty . Have the
system checked by an authorized Audi dealer or
autho rized Aud i Serv ice Facility soon.
Audi side assist: Unavailable when towing
Side assist switches off automatically when a fac­
tory- installed trailer hitch is connected to the
electrical connector on the trailer. There is no
guarantee the system will switch off when using
a retrofitted trailer hitch. Do not use side ass ist
when towing a trailer.

Intelligent Technology
Your vehicle is equipped with an intelligent ener­
gy management system for distributing electrici­
ty. This significantly improves the starting ability
and increases the vehicle battery life.
The energy management system Is made up of
battery diagnosis, idling current management,
and dynamic energy management.
Battery diagnosis
The battery diagnosis determines the vehicle bat­
tery charge level. The sensors determine the bat­
tery voltage, the battery current, and the battery
temperature. The current charge level and the
performance of the vehicle battery are deter­
mined based on this.
Idling current management
The idling current management decreases the
energy used while parked. With the engine
switched off, it manages the energy distribution
to the different electrical components. Data from
the battery diagnosis is taken into account for
this .
Depending on the vehicle battery charge level,
electrical equipment is switched off one item af­
ter the other to prevent the vehicle battery from
draining and to maintain the starting ability.
Dynamic energy management
While driving, dynamic energy management dis­
tributes the appropriate amount of energy to the
electrical equipment. It controls the battery
charge level so that the amount of energy is not
greater than the amount being generated in or­
der to maintain an optimal vehicle battery charge level.
(D Tips
- Energy management cannot overcome the
laws of physics . Note that the charge level
and length of the vehicle battery life are
limited.
- When the starting ability is endangered, the
(•) indicator light turns on ~ page 21.
132
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 cold times of the year . A lot of energy is
used but little is generated. It is also 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, electrical equipment is gradually scaled
back or switched off . This reduces energy use and
ensures the vehicle will 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
available again once you switch the ignition on
and start the engine.
With the engine switched off
The vehicle battery will drain if you use Infotain­
ment functions such as listening to the radio
while the engine is switched off.
If the starting ability is impaired by the energy
use, the following message will appear in the In­
fotainment system display:
Please start the engine, otherwise the system
will turn off shortly.
This message indicates that the system will
switch off automatically after 3 minutes. If you
would like to continue using the functions, you
must start the engine.
With the engine running
Although electrical energy is generated while
driving, the vehicle 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.
...

u. co .... N
" N .... 0 0 :c ' To restore the balance of energy, components
that require large amounts of energy are tempo­
rari ly 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 working, then it
has been temporar ily reduced or switched
off .
These systems are available again as soon as the
e n ergy supp ly has been restored.
In addition, you may notice that the idle speed
has slightly increased. That is normal and no
cause for concern . By increasing the idling speed,
the add itiona l required e ne rgy w ill 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 equipped with an Event Data Re­
corde r (EDR). The main purpose of an EDR is to
record, in certain crash or near crash-like situa ­
tions, such as an airbag deployment or hitting a
road obstacle, data that will assist in understand ­
ing how a vehicle 's systems performed. The EDR
is designed to record data re lated 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
belts were buckled/fastened;
- How far (if at all) the driver was depressing the
acce lerator and/or brake pedal; and,
- How fast the vehicle was traveling.
These data can he lp prov ide a better understand­
ing of the circumstances in which crashes and in­
ju ries 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 normal
driving conditions and no personal data (e.g.,
name, gender, age, and crash location) are re­
corded. However, other parties, such as law en-
Intelligent Technology
forcement, could combine the EDR data with the
type of personally identifying data routinely ac­
quired during a crash investigation.
T o read data recorded by an EDR, special equip­
ment is required, and access to the vehicle or the
EDR is needed. In addition 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 the vehicle or the
EDR .
Some state laws restrict the retrieval or down­
loading of data stored by ED Rs installed in a vehi­
cle for the express purpose of retrieving data af­
ter an accident or crash event without the own ­
er's consent .
Audi will not access the EDR and/or simi lar data
or give it to others -
- un less the vehicle owner (or lessee if the vehi ­
cle has been leased) agrees; or
- upon the official request by the police; or
- upon the order of a court of law o r a govern-
ment agency; or
- for the defense of a lawsuit through the judicial
discovery process.
- Aud i may also use the data for resea rch about
veh icle operation 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 vehicle is also equipped with a number of
electronic control modules for various vehicle
systems, such as engine management, emission
control, airbags, and safety belts .
These electronic control modu les record data
during normal vehicle operation that may be
needed by trained technicians for diagnostic and
repair purposes. The recording capability of these
modules is limited to data (no sound is record­
ed) . Only a small amount of data is actually re­
corded over a very lim ited period of time, or stor­
ed when a system fault is detected by a control
module . Some of the data stored may relate to
.,.
133

Media drive s and conn ection s
Cl earing the Juk ebo x
Req uirement: the J ukebox must con tain audio/
video fi les.
- Sele ctin g fil es/ fo ld ers: se lect the S ettings con­
trol button
> Clear Juk ebo x > individual files or
folders.
Press the All control b utton to sele ct
all fi les or folders.
O r: se lect and confirm a
fo lder and press and hold the contro l knob . All
files in the folder are se lected for de leting .
-Delet ing file s and folder s: select the Start de­
leting
control b utton > Ye s. The status of the
deleting process is shown in the Infotainment
display. Jukebox playback stops dur ing the de­
leting process and starts again automatically
once the deletion is complete .
Showing memo ry cap acit y
Select : Settings control button > Jukebo x memo­
r y.
The used/free Jukebox memory as well as the
number of stored tracks appear in the Infotain­
ment d isplay.
The Jukebox is started and operated through the MMI
c>poge 190.
@ Note
Do not import audio/video files when the en ­
gine is turned off because this will drain the
veh icle battery.
(D Tips
- Tracks from audio CDs cannot be imported
to the J ukebox for legal reasons.
- Fil es a lready imported a re recognized and
will be grayed out when setting up a new
import.
- It is no t possib le to play audio/video fi les in
the DVD drive while importing them.
- The Jukebox does no t provide an export
function due to lega l reasons.
- F il es or tracks without s tored information
are listed as
Unknown . Audi recommends
adding additiona l information (s uch as 1D3
tags) to aud io files.
- Reset the Jukebox to the factory defau lt set­
tings when sel ling your
vehicle¢ page 207.
184
Bluetooth audio player
App lies to : vehicles wi th Blue toot h int erface
You con ploy music wirelessly from your cell
phone through the
MMI using the Bluetooth au­
dio player.
Requirement: the vehicle must be stationary. The
B luetooth function on the portab le aud io player
and the MMI
A ud io player must be switched on
c> poge 156.
.,. Select the I MEDIAi button > Source control but­
ton
> Bluetooth audio player > Connect new
Bluetooth audio playe r.
The available Blue­
tooth audio players are d isplayed.
.,. Select and confirm the des ired Bluetooth audio
player from the l ist .
.,. Sele ct and confirm Audio pla yer. Th e M MI gen­
erates a PIN for the con nection.
.,. Sele ct and confirm Ye s.
.,. Enter the PIN for connecting on your cell
phone .
Or: if the PIN is already displayed on
your cell phone, confirm it in the ce ll phone and
in the MMI. The t ime allowed for entering the
PIN is limited to approximate ly 30 seconds.
The media are started and operated through the
portable device or the M MI, depending on the de ­
vice be ing used
¢ page 190.
(D Tips
-Be sure to pay attention to any possible con­
nection prompts on your Bluetooth audio
player.
- You on ly have to pair your device one time .
Bluetooth devices that are already paired
are automatically connected to the MMI as
soon as they are in range.
- Severa l Bluetooth audio p layers can be con­
nected to the MMI, but only one portab le
device can be active.
- Bluetooth A2DP and AVRCP (1.0/1.3) are
supported .
- The supported media functions depend on
the B luetooth aud io player be ing used.
- For more informat ion on the supported de­
vices, v isit
www.audiusa .com/bluetooth or
contact an a uthorized Aud i dea ler or author­
ized Aud i Serv ice Facility.

u. co .... N
" N .... 0 0 :c ' Troubleshooting
Problem
Audi music interface /Bluetooth
audio player :
the portable aud io
device/Bluetooth audio player is
not supported.
Audi music interface : When start-
ing the playback through the 3.5
mm stereo jack adapter cable*/ AV
adapter cab le", the volume is too
high.
Audi music interface : the porta-
ble device is not recognized as a
source.
Audi music interface : malfunc-
tions during audio playback
through an iPod/iPhone .
Audi music interface : there is
stat ic when connecting or discon -
necting the 3 .5 mm stereo jack*/
AV adapter cable* or when con-
nect ing or disconnecting the port-
able device to the 3.5 mm stereo
jack*/ AV adapter cable*.
Bluetooth audio player : audio
playback interference .
Jukebox: songs on the imported
playlist are grayed out.
Wi-Fi audio player* : the audio/
video playback is inter ru pted.
Wi-Fi hotspot *: your Wi-Fi device
is d isconnected from the Wi-Fi
hotspot .
Media drives and connections
Solution
Refer to the information on the Audi music interface ¢ page 186/
Bluetooth audio
player" ¢ page 184. You can learn about support-
ed dev ices in the Audi database for mobile devices at
www.audi.com/bluetooth .
Adjust the volume of the portable device to approximate ly 70 per-
cent of the maximum output
( Input level )¢ page 191 .
F or many cell phones or media players, playback is not possible
when the battery leve l is too low (less than 5% of its capacity).
The portable device will on ly be recognized as a source in the
MMI
after connecting if the battery charge is sufficient.
The
Audio player function is sw itched On. Switch this function Off
when you are not using the Bluetooth audio player*.
The Audi music interface source is already selected when connect-
ing or disconnecting. Either mute the portable device or switch to
another audio source (such as the
radio¢ page 178) before con-
necting or disconnecting the portable device.
Only
one interface should be act ively used at a time to ensure
problem-free playback.
When importing playlists, all of the fi les themse lves must be im-
ported.
To avoid intenuptions during audio/video playback, deactivate the
power saving func tion on the Wi-Fi media player* or connect it to
a charger.
Make sure the network optim izat ion functions are sw itched off in
the Wi-Fi sett ings or in the network sett ings for your W i-F i dev ice .
For addit ional information refer to the user guide for your Wi-Fi
device.
189