2017 AUDI A4 battery

-Audi AG simply makes the access to online
media services possible through the MMI
and does not take any respons ibility for the
contents of the online media services.
- Always read the chapter
c;, page 178, Audi
connect (Infotainment ) information .
-Depending on the mobile device being used,
interruptions in media playback can occur.
To avoid interruptions when using a mobile
device, do not lock the screen on your mo­
bile device and keep the
Audi MMI connect
app in the foreground .
- Contact your authorized Audi dealer or au­
thorized Audi Service Facility for additional
information about online media .
Multimedia connections
USB adapter for Audi music interface
You con connect your mobile devices (such as o
smortphone or MP3 player) to the Audi music in­
terface and charge them using o special
USB
adopt er.
Fig. 194 Audi USB adapt ers
CD USB adapter for devices with a micro USB con­
nect ion
@ USB adapter for devices with an Apple Light­
ning connection
@ USB adapter for devices with an Apple Dock
connector
You can purchase the USB adapter from an au­
thor ized Audi dealer or at spec ialty stores .
Use the USB adapter for the
Audi music interface
,=;,page 215.
Media
(D Note
Handle the USB adapter carefully . Do not al­
l ow it to be pinched .
Audi music interface
Connect your mobil e devices to the Audi music
interfac e in order to operate them through the
MMI and charge the battery.
Fig. 195 Conn ect ing mob ile device s
The Audi music interface is located under the
armrest in the center console @,=;,
page 8, fig. 2.
-Connecting a mobile device using a USB
adapter:
connect the applicable USB adapter @
c;, fig. 195 to the port on the Audi music inter­
face @ and then connect the adapter to the
mobile device
CD (such as an iPod).
- Charging a mobile device using a USB adapter :
when you connect a mobile device to the Audi
mus ic interface @ using the applicable USB
adapter @,=;,
fig. 195 , the battery will auto­
matically charge .
-Disconnecting a mobile device from the Audi
music interface :
remove the USB adapter@
c;, fig. 195 from the Aud i music interface .
-Disconnecting mobile devices with an Apple
Dock connector :
remove the Apple Dock con­
nector from the Apple device with the release
tabs pressed in@ ¢poge
215 , fig. 194.
The media are started and operated through the
mobile device or the MMI, depending on the de­
vice being used ¢
page 217.
Connecting two mobile devices : if two mobile
dev ices (for example iPod and smartphone) are
connected at the same time , then both devices
can be used as playback sources.
IJl.
215

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Problem
Audi music interface :
the porta-
ble audio device is not recognized
as a source.
Audi music interface : the audio
playback through the iPod/
iPhone/iPad is malfunctioning.
Audi music interface : contents
that are changed on a mobile de-
vice connected to the Audi music
interface are not displayed in the
media center ..
AUX input: there is stat ic when
connecting and disconnecting the
AUX connection cable.
Bluetooth audio player* /Wi-Fi
audio player *:
aud io playback in-
terference.
Jukebox*: tracks on the imported
playlist are grayed out.
Jukebox*: i mported tracks cannot
be played or found.
Wi-Fi audio player *: multiple de-
vices are connected to the Wi-Fi
hotspot. A media player (such as a
smartphone) appears as the
source and cannot be changed.
Online media *: connection failed
between the MMI and the
Audi
MMI connect
app.
Wi-Fi audio player* /Online me-
dia *:
audio playback interference.
Media
Solution
For many ce ll phones or mobile devices, playback is not possible
when the battery level is too low (less than 5% of its capacity).
The mobile de-vice will only be recognized as a source in the MMI
after connecting if the battery charge is sufficient.
The
Bluetooth audio player f unction is switched on. Switch this
function off
c:> page 231 when you a re not using the Bluetooth
audio player.
Reset the Media settings to the facto ry defau lt settings
c:>page 230.
When connecting a nd disconnecting, the External audio player
source is already selected. Before connecting or disconnecting the
mobile device, either mute the device (refer to
c:> page 233) or
sw itch to a different audio source (for example
c:> page 204, Open-
ing the radio function).
Only one interface should be act ively used at a time to ensure
problem-free playback.
When importing playlists, a ll of the fi les themselves must be im-
ported.
If yo u cannot find impor ted tracks in the media center, they may
not be supported. Only copy supported files
c:> page 223 to the
Jukebox.
Close the
Audi MMI connect app on the connected dev ices (for ex-
ample, smartphones) that are not being used as the Wi-Fi audio
p laye r*. Likewise, close the UPnP server apps or the media pe rm is-
sions on the integrated UPnP/DLNA server. Connect the desired
device as a Wi-Fi audio pla yer*
c:> page 213.
To establish a connection to the MMI, the MMI connection switch
must be switched on in the
Audi MMI connect app status screen.
Malfunctions can occur during audio playback if the
Hotspot and
client a)
c:> page 177 Wi-Fi mode setting was selected. For p layback
without interference, Audi recommends the
Hotspot setting for
Wi-Fi mode.
225

Audi smartphone interface
Troubleshooting
Applies to: vehicles with Audi smartphone interface
Problem Solution
Audi smartphone interface
can-Check the charge level of your smartphone battery.
not be opened. Check the USB cable and use a different one if necessary.
Check if Android Auto or Apple CarPlay is available in your country.
Check if the Android Auto app is installed on your smartphone .
Connecting the smartphone to Check if you
are ursing the correct USB adapter and if the USB
the MMI failed. adapter is connected correctly to your smartphone and the Aud i
music interface
¢ page 215.
Check if Apple CarPlay is activated on your smartphone .
Check in the Android Auto app if Android Auto permits new
vehicles .
T he smartphone is not automati- Check if you are ursing the correct USB adapter and if the USB
cally detected. adapter is connected correctly to your smartphone and the Audi
music interface
¢ page 215.
Check if the requirements needed to connect a smartphone have
been met.
228

-For safety reasons in severe accidents, the
alternator and starter are separated from
the vehicle battery with a pyrotechn ic circuit
interrupter.
- Work on the pyrotechnic circ uit interrupt ­
er must only be performed by a qualified
technicians who have the experience, in ­
formation and special tools necessary to
perform the work safely.
- If the vehicle or the circuit interrupter is
scrapped, all app licab le safety precautions
must be followed .
@) For the sake of the environment
Undeployed airbag modu les a nd pretension ­
ers might be classified as Perch lorate Materi­
al -special handling may apply, see
www.dtsc .ca.gov/hazardouswaste/perchlo­
rate. When the vehicle or parts of the re­
straint system including airbag modules and
safety belts with pretensioners are scrapped,
all applicable laws and regulations must be
observed. Your authorized Audi dealer is fa­
m iliar with these requi rements a nd we recom­
mend t hat you have you r dealer perform this
service for you.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced Airbag System
performs in a crash . For example, using tire-r im
comb inat ions not approved by Audi, lowering the
ve hicl e, chang ing the stiffness of the suspens io n,
in clud ing the spr ings, suspens ion str uts, shock
absorbers et c. can change the forces that are
measured by the airbag sensors and sent to the
e lectronic contro l unit. Some suspension changes
can, for example, increase the force levels meas­
ured by the sensors and make the airbag system
deploy in crashes in wh ich it would not deploy if
the changes had not been made. Other ki nds of
changes may reduce the fo rce levels meas ured by
the sensors and prevent the airbag from deploy­
in g when i t should .
Airbag sys tem
A WARNING
-Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance and in­
crease the risk of serious persona l injury in a
crash.
- Never install suspension components that
do not have the same pe rformance charac­
teristics as the components o rigina lly ins tal­
led on your vehicle.
- Never use tire-rim combinations t hat have
not been approved by Audi.
Knee airbags
Description of knee airbags
The knee airbag system can provide supplemen­
tal protection to prop erly restrained front sea t
occupants.
F ig. 223 D river 's knee a irbag
The driver knee airbag is in the instrument panel
u nderneath the steering whee l
~fig. 223, the
airbag fo r the p asse nger is at about the same
height in the instr ument pane l underneath the
glove compa rtment.
T he knee airbag offers add itiona l protection to
the driver's and passenge r's knees and uppe r and
lower thigh areas and supp lements the protec­
tion provided by the safety be lts .
If the front airbags deploy, the knee airbags a lso
deploy in fron tal coll is ions when the deploymen t
threshold stored in the cont rol un it is me t
~ page 263, More important things to know
about front airbags.
269

Check ing and F illing
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
Fo r wo rk in th e engine compa rtmen t, s uch as
c h ec kin g and filli ng flu id s, th ere is a risk of in­
j u ry, sc aldin g, ac cide nts, a nd b urn s. For this
rea son, foll ow all the warning s and gener al
s a fe ty p recaution s pr ov ided in the f ollow ing in·
f o rm ation . Th e en gine c omp artmen t is a dan ­
ger ous are a.
¢ ,&.
_& WARNING
- T urn the engine off.
- Switch the ign ition off .
- Set the parking brake .
- Select the P selector lever pos ition .
- let the engine cool down.
- Never open the hood if you can see steam or coolant escaping from the engine compart­
ment, because th is increases the r isk of
burns . Wait until no steam or coolant is es­
caping .
- Keep ch ildren away from the engine com­
partment .
- Never spill flu ids on a hot engine. These flu­
ids (such as the anti -freezing agent con ­
ta ined in the coolant) can ignite .
- Avoid short circu its in the electrical system,
especially to the battery .
- When working in the engine compartment,
remember that the rad iator fan can sw itch
on even if the ign ition is switched off, which
increases the risk of injury .
- Never open the cap on the coolant expan­ sion tank when the eng ine is warm. The
cooling system is under pressu re .
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
large cloth when opening.
- Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
- If tests need to be performed w ith the en­
gine running, there is additional danger d ue
304
to moving components (such as the ribbed
be lt, alternator and rad iator fan) and from
the high-voltage ignition system.
- Do not under any circumstances activate the
throttle inadvertently (for example, by hand
from the engine compartment) if the vehi­
cle is stat ionary but the eng ine is running
and a gear is engaged . Otherwise, the veh i­
cle will start to move immediately and this
could result in an acc ident.
- Pay attent ion to the following warnings list­
ed when wor k on the fue l system o r on the
electrical equipment is req uired.
- Always disconnect the vehicle battery
from the vehicle electrical system.
- Do not smoke .
- Never work near open flames.
- Always have a working fire extinguisher
nearby
- To reduce the r isk of e lectr ic shock and in­
jury, never touch the follow ing components
when the engine is running or is being start ­
ed:
- Ign ition cable
- Other components in the electronic high-
voltage ign ition system
- If you must check or perform work on the engine whi le it is running:
- Set the parking brake and place the selec­
tor lever in the P (park) pos ition first.
- Always proceed w ith extreme cau tion so
that clothing, jewelry or long hair do not become ca ught in the rad iator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie back long hair before beginning
work and do not wear clothing that can hang down into the engine .
- Limit your exposure to exhaust and chemi­
cals to as short a time as possible¢.&. .
_& WARNING
California Proposition 65 Warning :
- Engine exhaust, some of its constituents,
and certa in vehicle components conta in or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and ..,

reproductive harm. In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproduct ive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chem icals known to the State of California
to cause cance r and rep roductive harms.
Wash hands after handling.
(D Note
When filling flu ids, be sure not to mix the flu­
ids up . Otherwise severe ma lfunctions and en­
gine damage w ill occur.
@ For the sake of the environment
You should regularly check the grou nd under
your veh icle in order to detect Leaks qu ickly . If
there are v isible spots from oil or other fluids,
bring your vehicle to an authorized Aud i dea l­
er or authorized Audi Service Facility to be
checked.
Opening the hood
The hood is released from the interior.
F ig. 2 45 Dri ver fo otw ell : rele ase leve r
Checki ng an d Fill in g
Fig. 246 Unlocke d hood: lever
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged .
.,. With the driver's door open, pull the lever be­
low the instrument pane l in the direction of the
arrow
c;> fig. 245 .
.,. Raise the hood slightly c;> ,&. .
.,. Press the lever c;> fig. 246 in the direct ion of the
arrow. This releases the hooks .
.. Open the hood .
A WARNING
-
Never open the hood if you can see steam or
coolant escaping from the engine compart­ ment, because this increases the risk of
burns. Wait until no steam or coolant is es­
cap ing .
Closing the hood
.,. Push the hood down until you override the
force of the str uts .
.,. Let the hood fall lightly into the latch .
Do not
press it in.
c;> &_ .
A WARNING
-===
If the hood is not latched complete ly, it could
fly up wh ile you are driving and obstruct your
vis ion.
- For safety reasons, the hood must always be
closed securely while driv ing. 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 lifted.
~
305

Check ing and F illing
right brake fluid and the know -how to do this for
you.
A WARNING
- Brake fluid is poisonous. It must be stored
only in the closed orig inal container out of
the reach of chi ldren!
- B rake failure can resu lt from old or inappro­
pr iate brake flu id. Observe these precau­
t ions:
- Use on ly brake fluid that mee ts SA E speci ­
fi cation) 17 0 3 and confo rms to Fede ral
Motor Ve hicle Standard 116. Always check
wit h your authorized Audi dealer to make
sure you are using the correct brake fluid.
The cor rect type o f brake fluid is a lso indi­
cated on the brake fluid reservoir.
- The brake fluid must be new. Heavy use of
the brakes can cause a vapor lock if the
brake flu id is left in the system too long.
This ca n ser iously affect t he efficiency of
the bra kes as well as your safety. This
could result in an acc ident.
{U) Note
Brake fluid w ill damage the pa int of yo ur vehi­
cle.
@ For the sake of the environment
Because of the prob lem of proper disposal of
brake flu id as we ll as the special tools re­
quired and the necessary expertise, we rec­
ommend tha t you have the brake fluid
changed by your author ized Audi d ealer.
Battery
General information
Unde r normal operating conditions, the battery
i n your Audi does not need any maintenance.
W ith
high outs ide temperat ures o r long da ily
d rives we recommend that you have the electro­
lyte leve l checked by an a uth orized Audi dea le r or
qua lified wor kshop. The e lectroly te leve l should
a lso be checked each time the batte ry is ch a rged
¢ page 314.
312
Have t he battery chec ke d when yo u take yo ur ve ­
hicle in for service . You are we ll advised to re­
place a battery that is o lder than 5 yea rs .
With ce rta in types o f airbag deployment, t he
b atte ry is disconnected from the veh icle elect ri­
ca l system for safety reasons ¢.&
in Repair, care
and disposal of the airbags on page 268.
Disconnecting the battery terminals
Some ve hicl e fu nctions (power window regula ­
tors, for examp le) are lost if the batte ry te rm i­
nals a re disconnected . These f unc tions have to be
relearned after the battery term inals are con­
nected again . To p revent this, the battery should
o nl y be disconnected from the vehicle electrical
system when absolute ly necessary for repairs.
Vehicles not driven for long periods
If you do not d rive yo ur vehicle ove r a period of
severa l days o r weeks, electr ica l components are
grad ua lly cut back or switched of f. T his reduces
energy consumpt ion and maintains start ing ca­
pability over a longer period ¢
page 138.
Some of the convenience functions may not oper­
ate, such as the inter ior lights or the power seat
adjustment . The convenience functions will be
available again w hen you turn on the ignit io n and
start the eng ine .
Winter operation
Dur ing the winte r months, battery capacity tends
to decrease as tempe ratures drop. This is be ­
ca use more power is also consumed while start­
i ng, and t he headlights, rear w indow defogger,
etc ., are used more often.
Avo id unnecessary powe r consumption, partic u­
l a rly in city traffic or when traveling o nly short
distances . Let your author ized Audi dealer check
the capacity of the vehicle battery before win ter
sets in ¢
page 314 . A well charged battery will
n ot only p reve nt sta rting prob lems when the
we ather is co ld , but will also last longer.
@ Tips
I f yo ur vehicle is left sta nding for several
weeks at extreme ly low te mpera tures, th e ve-
h icl e b att ery should be re mo ved and store d
II>-

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where it will not freeze. This will prevent it
from being damaged and having to be re­
placed.
Working on the battery
Be especially careful when working on or near the battery.
The battery is located in the engine compart­
ment. Before you check anything in the engine
compartment,
read and heed all WARNINGS
c::>& .
Always heed the safety warnings, when wo rking
on the vehicle battery or the vehicle electrical
system to prevent injury.
The following WARNINGS are very important
when working on the battery:
Always heed the following WARNING SYM -
BOLS and safety precautions when working on
the battery.
®
Always wear eye protection.
&
Battery acid contains sulfuric acid. Al-
ways wear glov es and eye protection .
@
No
-sparks
- flames
- smoking.
~
When a battery i s charged, it produces
hydrogen gas which is explosive and
could cause personal injury.
®
Always keep the battery well out of reach
of children.
A WARNING
Whenever working on the battery or on the
electrical system, there is the risk of injury,
accident and even fire . Read and heed the fol­
lowing WARNINGS:
-Always wear eye protection. Do not let bat­
tery acid or any lead particles get on your
skin or clothing. Shield your eyes. Exp losive
gases can cause blindness or other injury .
- Battery acid contains su lfuric acid. Sulfuric
acid can cause blindness and severe burns.
-
Checking and Filling
-Always wear gloves and eye protection. Do
not tilt the battery because acid could leak
out of the ventilation openings.
- If you get battery acid in your eyes or on
your skin, immed iate ly r inse with cold wa­
ter for several minutes and get med ical at­
tent ion.
- If you shou ld ingest any battery acid, seek
med ica l attent ion immed iate ly.
- Do not expose the battery to an open flame,
electric sparks or an open light.
- Do not smoke.
- Do not interchange the positive and nega -
tive cables.
- When working on the battery, be sure not to
short-circuit the termina ls with tools or oth­
er metal objects. This would cause the bat­
tery to heat up very quickly, which cou ld
lead to damage or explosion and personal
injury .
- When a battery is charged, it produces hy­
drogen gas which is explosive and could
cause personal injury.
- Always keep the battery well out of the
reach of children .
- Before work is done on the e lectrical sys­
tem, disconnect the negat ive ground cable.
- Before performing any work on the electri­
cal system, sw itch off the engine and ign i­
tion as well as any electrical equipment. The
negat ive cable on the battery must be dis­
connected. If you are just going to replace a light bulb, then it is enough to swi tch off
the lights.
- Before disconnecting the battery, switch off
the anti-theft alarm system! Otherwise you
will set off the alarm.
- When disconnecting the battery, first dis­
connect the negative cable and then the
positive cable.
- Before reconnecting the battery, make sure
all electrical consumers are switched off.
Reconnect the positive cable first and then
the negative cable. Never interchange the
cables -this could start a fire!
313