2017 AUDI A4 battery

Driving 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.
Fig. 78 Center console/remote contro l key: starting the
eng ine if there is a m alfunction
Requirement: the message Remote control key:
hold back of key against the designated area.
See owner's manual must display and the D)in­
dicator light must turn on.
.. Place the remote control key on the location
shown in the illustration
y>l) ~ fig. 78.
.. Press the brake pedal~ A in Starting the en­
gine on page
76.
.. Press the l~S_T_A_R_T_E_N_G_I_N_E_S_T_O_P_I button . The
engine will start .
.. Drive to an authorized Audi dealer or author­
ized Audi Service Facility immediately to have
the malfunction corrected.
(D Tips
You can view the message again by pressing the
I START ENGINE STOP! button.
Start/Stop system
Description
App lies to: ve hicles w ith S ta rt-Sto p system
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
l ) Market -spe cific
78
In Start/Stop mode, the engine shuts 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 will restart automatically when needed.
The Start/Stop system is automatically activated as soon as the ignition is switched on.
Basic requirements for Start/Stop mode
-The driver's door must be closed.
- The driver 's seat belt much be fastened.
- The hood must be closed .
- The vehicle must have driven faster than
2 mph
(3 km/h) since the last time it stopped .
- A trailer must not be hitched to the vehicle .
If you leave the vehicle during a stop phase, the
engine can be restarted within approximately 30
seconds if the following requirements are met:
- The driver's door must be closed , the driver
must be wearing the safety belt and the brake
pedal must be pressed . Or:
- The driver's door must be closed, the brake
pedal must be pressed and a gear must be se­
lected.
({D Note
Always switch the Start/Stop system off when
driving through water
~page 78.
(D Tips
The engine stops shortly before the vehicle
comes to a stop
l). The full function of the
brake booster and the power steering is still
available.

Stopping and starting the engine
Applies to: vehicles with Start-Stop system
Fig. 79 Instrument cluster : eng ine sw itched off (s top
p hase)
~ B rake the ve hicle to a stop. The engine stops
shortly before the vehicle comes to a stop or if
the vehicle is stationa ry
1l. Keep your foot on
the brake pedal. The
II indicator light appears
in the stat us line at the bottom of the instru­
ment cluster d isplay. The needle in the tachom­
eter also moves into the READY
1l position .
~ The engine starts aga in when you take your
foot off the b rake pedal.
If the park ing brake is
set, the engine w ill only start aga in when the
a cce le rator pedal is p ressed
1>. The indica tor
li gh t turns off.
Additional information The engine stops i n the P, N and D selector lever
positions .
If you select the R pos ition dur ing a Stop phase ,
the eng ine will start again .
Select the P pos ition quickly to p revent the en­
g ine from starting unintentionally when sh ift ing
through R.
You can determine for yourself if the engine will
stop or not by reducing or increasing the amount
of force you use to press the brake pedal. For ex­
ample, if you only lig htly press on the brake ped­
al in stop-and-go traff ic or when turning, the en­
g ine will not switch off when the vehicle is sta­
tionary . As soon as you press the brake down
ha rder, the eng ine will switch off.
l l Ma rket -spe cific
Drivi ng
(D Tips
- Press the bra ke peda l during a Stop phase
to keep the vehicle from rolling.
- The ignition will turn off if yo u press the
!START ENGINE STOPI butto n dur ing a stop
phase. The needle in the tachometer moves
into the
OFF position.
General information
Applies to: vehicles with Start-Stop system
The standard Start/Stop mode con be canceled
for different system-related reasons.
F ig. 80 Instrument cluste r: eng ine stop temporarily un­
ava ilable
Engine does not switch off
Before and dur ing each stop phase, the system
checks if certain conditions have been met. For
example, the eng ine will not switch off in the fol­
lowing situations:
- The engine has not reached the minim um re­
quired temperature for Start/Stop mode.
- The inte rior temperature selected by the A/C
system has not been reached.
- The outside temperature is extremely high/low.
- The windsh ield is being defrosted .
- The battery charge level is too low .
- The steering wheel is turned at a sharp angle o r
is moving .
- After engaging the reverse gear .
- On sharp incl ines.
- At high altitudes .
r,jj also appears in the instrument cl uster d is­
play.
79

Driving
Engine automatically r esta rt s
The standard Start/Stop mode will be canceled
during a stop phase in the follow ing situations.
The engine restarts without any action by the driver .
- The vehicle rolls, for examp le while on a slope.
- The inter io r temperatu re differs from the tem-
perature se lected in the A/C system.
- The w indshield is being defrosted.
- The brake pedal is pressed several t imes in a
row .
- The battery charge level becomes too low .
- Power consumption is high .
The engine can turn off again when the condi­
tions for Start/Stop mode are met .
Ignition is swit ched off aut omaticall y
To prevent the battery from dra ining, the ignition
will sw itch off
aut omati cally under the following
conditions:
- T he Sta rt/Stop system has stopped the engine.
- The vehicle must be stationary .
- You left the veh icle and the engine was not re-
started within approximately 30 seconds.
If this happens, you will see the message
I gni ­
tion turn s off automatically in the instrument
cluster and the activated low beams are replaced
by the parking light. The parking lights will
sw itch off after approximately 30 minutes or
when you lock the vehicle .
The ignition also switches off when you lock the
veh icle from the outs ide dur ing a stop phase.
If the Start/Stop system has not turned off the
engine or 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 cont in­
ue to run~& .
.&, WARNING
To red uce the risk of poisoning, neve r allow
t he engine to r un in confined spaces.
80
-
@ Tips
-If you leave the ve hicle with the D/S or R se­
lector lever position engaged, the parking
brake is automatically set.
- If you select the D or N selector lever posi­
tion after shifting into reverse, the vehicle must be driven faster than 6 mph (10 km/h)
in order for the engine to switch off again.
Manually switching the Start/Stop system
off/on
App lies to: vehicles wit h Start -Stop system
If you do not wish to use the system, you can
switch it off manually.
- -
. !.. r' '!. .:-,/'"~ ~
tJ .,. -,J
-----::::I
F ig . 81 Cen te r conso le: S tart/Stop system butto 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.
(l} Tips
If you switch the system off during a stop
phase, the engine will start again automati­
cally.
Messages in the instrument cluster display
App lies to: vehicles wit h Start-Stop system
St art- stop system: de activated . Please
restart engin e manually
This message appears when spec ific conditions
a re not met during a stop phase . The S tart/Stop
system will
not be ab le to res tart the eng ine . The
engine m ust be sta rted with t he
I STAR T ENGINE STOP! button. ....

Ass is t
- Please note that the rear cross-traffic assist
may act ivate the brakes unexpectedly. Se­
cure any cargo that you are transporting to
reduce the risk of damage or injury .
- An additional brake act ivat ion may be tr ig­
gered within 20 seconds after an automat ic
brake activation.
- If there is an acoustic warning signa l from
the rear cross-traff ic assist, then the park­
ing system may not warn you of detected
obstacles under certa in circumstances .
- The view of the radar sensors may be im­ paired by leaves, snow, heavy spray or d irt.
Clean the a rea in front of the sensors
~ page 116, fig . 112.
A WARNING
T he rear cross-t raff ic assist is s ubject to lim i­
t at ions and cannot warn you before every im­
pending collision:
- If the vehicle is too w ide fo r the pa rki ng
spa ce and covered by the ne ighbor ing
vehicles.
- People , such as cyclis ts, jogge rs, in line skat­
ers and pedestrians, may not be detected
under certain circ umstances.
- If you are in a par allel par king sp ace.
(D Note
Also read this info rmation ~ CD in General in­
formation on page 117.
(0 Tips
- You can cancel the automatic brake activa ­
tion with increasing braking force if you ap­
ply the bra kes yourself or accele rate cons id­
e rab ly.
- In some s ituations, rea r cross-traffic ass ist
may warn you even if t here is no cross traffi c
i n a critic al are a, for examp le w hen ba cking
i nto a parking space or maneuver ing.
- T he rea r cross -traffic ass ist also switches off
whe n you swi tch off the ESC.
- T he rea r cross traffic assist switches on and
off thro ugh the p arking aid<:?
page 12 4.
- T he system is not ava ilable when towing a
trailer.
120
' Messages
Applies to: vehicles with Audi side assist
A message appea rs in the ins trument cluster dis­
play if the side ass ist sw itches off automat ica lly.
@j Audi side assist: currently unavailable . Sen­
sor vi sion re stricted due to surroundings. See
owner' s manual
@j Audi side ass ist and ex it warning: currently
unav ailable . Sensor vi sion restricted due to sur­
rounding s
The radar sensors ' vision is affected . The area in
front of the sensors must not be covered by bike
racks, stickers, leaves, snow or any other objects .
Clean the area in front of the sensors, if necessa­
r y
<:? page 116, fig . 112.
@j Audi side ass ist: currently unavailable . See
owner's manual
@j Audi side ass ist and exit warning: currently
unavailable. See owne r's manual
Side assist ca nnot be switched on at this time be­
cause ther e is a malfunction (for example, the
battery charge level may be too low).
@j Audi side as sist: malfunction! Plea se contact
Service
@j Audi side assi st and exit warning: malfunc ­
tion! Plea se contact Service
The system cannot guarantee that it will detect
vehicles correct ly and it has sw itched off. The
senso rs have been moved or are fa ulty . Have the
system checked by an authori zed Aud i dea ler o r
a uthorized Aud i Serv ice Facility soon.
@j Audi side assi st: unavailable in towing mode
@j Audi side ass ist and ex it warning: currently
unavailable. Towing mode
Side assist switches off automatically when the electrical connector in the factory-installed trail­
er hitch is connected . There is no guarantee the
system will sw itch off when using a retrofitted
trailer hitch . Do not use side assist and the ex it
warning when tow ing a tra ile r.
Ill Rea r parking aid: obstacl e detection res trict-
ed ..,.

Intelligent Technology
Snow chains
If there are snow chain laws, snow chains must
also be used on vehicles with a ll wheel drive
¢ page 332, Snow chains.
Replacing tires
For vehi cles w ith all whee l dr ive, only whee ls with
the same rolling circumferen ce shou ld be used .
Avoid using tires w ith different tread depths
¢ page 324, New tires or wheels .
Offroad vehicle?
Your Audi is not an offroad vehicle - the re is not
e nough g ro und clea rance. For this reason, avo id
d iffi cult terrain .
_& WARNING
-Also, in vehicles with all wheel drive, adapt
yo ur driving style to the current road and
t raffic conditions . Do not let the increased
sa fety provided tempt you into tak ing risks,
because th is increases the r isk of an acci­
dent.
- The brak ing ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not diffe rent from a two whee l dr ive vehi­
cle . Do not be tempted to accelerate to a
high spee d when t he road is slippe ry, be­
ca use this increases the risk of an accident.
- Note that on wet streets, the front wheels
can "hy droplane" if dr iving at speeds that
are too hig h. Unlike front whee l drive
vehicles, the eng ine does no t r ev highe r su d­
denly when the vehicle begins hydroplaning .
For this reason, pay attention to the road
condit ions regar dless of you r speed to re­
duce the r isk o f an accident.
Energy management
The starting ability is optimized
The energy management system manages the
electrical energy distribution and optimizes the
availability of electrical energy for starting the
engine.
When a ve hicle w ith a co nventional e nergy sys ­
tem is not driven for a long time, the battery is
138
dra ined by equipment (for examp le, the immobi l­
izer) . In certain circ umstances, there could may
not be enough ene rgy to sta rt the eng ine.
Yo ur vehicle is equipped wi th an inte lligen t ener ­
gy management system for dist ributing elec trici ­
ty. This significant ly improves the starting ability
and increases the batte ry life.
The ene rgy management sys tem Is m ade up of
batte ry diagnosis , standby current manage­
ment
and dynamic ene rgy management .
Battery diagnosis
The ba ttery diagnos is determines the batte ry
c ha rge level. The sensor s de ter mine the batte ry
vo ltage, the batte ry cu rrent, and the batte ry
tempera ture. The current cha rge level and the
perfo rmance of the battery a re determined base d
on this .
Idling current management
The idling cur rent m an age ment decreases the
energy used while parked . With the engine
switched off, it manages the energy distrib ution
to the different e lectr ica l components. Data from
the battery d iagnosis is taken into account for
th is.
Depend ing on the battery charge leve l, electrical
equipment is switched off one item after the oth ­
er, to prevent the battery from drain ing and to
maintain the sta rting ability.
Dynamic energy management
W hile driv ing, dynam ic energy man agement dis ­
tributes the appropr iate amo unt of energy to the
electrica l eq uipment. It contro ls t he battery
charge level so that mo re energy is not used then
i s be ing generated in order to maintain an opti­
mal battery c harge level.
(D Tips
- Energy management cannot overcome the
laws of physics. Note that the charge level
and length of the battery life are limited.
- When the sta rting ability is endangered, the
(•) indicator light t urns on¢
page 31 .

<( a, .... N ,....
N .... 0 0
3 a,
What you should know
Maintaining the starting ability is the highest
priority.
A lot of stress is placed on the battery when driv­
ing short distances, in traffic, 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 runn ing but elect rical equipment is switched
on. I n this case, ene rgy is used but none is gener­
ated.
In s ituations l ike this, energy management will
actively regu late the distribution of ene rgy.
Long pe riods without use
If you do not drive your vehicle for several days or
weeks, e lectrical equipment is gradually scaled
back or switched off . This reduces energy use and
ensu res the veh icle w ill be able to start afte r long
pe riods of time. Some convenie nce functions,
such a s in te rior lighting or powe r seat adjust­
men t, may not be available under certa in c ircu m­
stances . These convenience functions will be
ava ilable again once you switch the ign ition on
and start the engine .
With the engine switched off
The ba tte ry will d rai n if you use Infota inment
functions s uch as listen ing to the rad io whi le the
engine is switched off .
I f t he vehi cle's ability to start may be impaired by
the energy use, a mess age will appear in the In­
fotainment system disp lay . The message indi ­
cates that the system will sw itch off automatica l­
l y soon . If you would like to continue using the
f u nctions, yo u m ust start the eng ine.
With the engine running
A lthough elec trical energy is gene ra ted wh ile
d riving, the ba ttery can drain . This can happen
when little energy is generated, and m uch is used
and the charge leve l of the battery is not optima l.
To restore the ba lance o f energy, components
that requ ire large amo unts of energy a re tempo­
rari ly sca led back or switched off. Heating sys­
tems in particu lar require a great deal of energy .
If you notice, for example, that the seat heating *
Intelligent Technology
or rear window defogger is not work ing, t hen it
has been temporarily limited o r switched off.
These systems are availab le aga in as soon as the
energy supply has been restored .
In add ition, yo u may notice tha t the idle speed
has slig htly increased. That is normal and no
ca use for concern . Due to the increased id ling
speed, the additional required energy will be generated and the battery will be charged .
Notice about data
recorded by the Event
Data Recorder and
vehicle control modules
E v ent Data R eco rder
This vehicle is eq uipped with an Event Data Re ­
corder ( EDR) . The ma in purpose of an EDR is to
record, in certain crash or near crash-like situa­
t ions, such as an airbag deployme nt or hitt ing a
road obstacle, data that w ill ass ist in understand­
ing how a vehicle 's systems performed . T he EDR
is des igned to record data related to vehicle dy­
nam ics and safety systems for a short per io d of
t ime, typ ic all y 30 seconds or less . T he ED R in this
vehicle is designed to record such data as:
- How va rious systems in your vehicle were oper ­
ating;
- Whethe r or not the d rive r and passenger safety
be lts were buckled/fas tened;
- How far (if at all) the driver was depressing the
accelerator and/or bra ke pedal; a nd ,
- How fast the vehicle was traveling .
These data can help p rovide a bette r understand­
ing of the circumstances in w hich crashes and in­
juries occur . NOTE: EDR data are recorded by your
vehicle on ly if a non-tr ivial crash situation occurs ;
no data are reco rded by the EDR un der no rmal
driv ing cond itions and no persona l da ta (e.g.,
name, ge nder, age, and cr ash location) are re­
corded. However, ot her parties, such as law en ­
forcement, co uld combine the EDR data with the
type of perso nally identifying data routinely ac­
quired d uring a crash investigation .
T o read d ata recorded by an EDR, special eq uip­
ment is required, and access to the vehicle or the ..,.
139

Multi Media Interface
@ Tips
The MMI switches off automatically if the en­
gine is not running and the battery is low .
Infotainment system
display
Switching on and off
- Switching on and off manually: press the Fc;J
button @¢page 8, fig . 2.
When the MMI is switched on and the display is
switched off, you can operate certain functions
using the MMI On/Off knob with joystick function
¢page 141 .
Information on display images
The display version depends on vehicle equip­
ment.
Fig. 141 Display v ersion A
Fig. 142 Display version B
Addit ional content (such as album cover and map
material) is shown on display version B, if appli­
cable
CD ¢ fig. 142. Because the other content
shown on the displays is nearly identical between
the two versions, this manual will primarily de­
scribe display version A .
142
Operating the MMI
Selecting and confirming a function
Fig. 143 Operating the control knob
Selecting and confirming a function in a
menu /list
.,.. Selecting the function: turn the control knob
CD¢ fig. 143 to the desired function (such as
selecting a frequency).
.,.. Confirming a selection: press the control knob
@ ¢fig. 143.
Returning to functions at higher levels
.,.. Press the I BACKI button (i) ¢ page 141,
fig. 139.
Opening the main menu /menu
Fig. 144 Main men u

Media
q page 218. The copied video files are stored in
the media center under the
Videos category.
Playing the Jukebox
Requirement: the Jukebox must contain audio/
video fi les
c;> page 211, Adding files to the Juke­
box .
The Jukebox is accessed and operated through
the MMI
© c;> page 217, fig. 196.
Displaying Jukebox memory capacity
Select: right control button > Jukebo x memory
ca pacity .
Information about the Jukebox memory
capacity and the numbe r of stored tracks is dis­
p layed.
Deleting tracks from the Jukebox1>
Requirement: the Jukebox must contain audio/
video files.
- Delet ing an ent ry: select an entry from the
Jukebox media center. Se lect: right contro l but­
ton >
Delete from jukebo x> This entry or En­
tire list .
-The status of the de leting process is shown in
the MMI. Jukebox playback stops during the de­ leting process and starts again automatically
once the deletion is complete .
(0 Note
Do not import aud io/video files when the en­
gine is turned off because this will drain the
veh icle battery.
(D Tips
- Tracks from aud io CDs cannot be imported
to the Jukebox for legal reasons .
- Files that have already been imported are
automat ically recognized and cannot be
copied to the Jukebox again.
- It is not possible to play audio/v ideo f iles*
i n the CD/DVD* drive while importing them.
- The Jukebox does not provide an export
function due to lega l reasons.
- Files or tracks without add it iona l stored in­
formation are listed as
Unknown . Audi rec-
1> Not in th e Now playing view.
212
ommends adding additional information
(such as 103 tags) to a udio fi les .
- Rese t the
Jukebox to the factory defau lt
settings when sell ing yo ur vehicle
¢page 230.
Bluetooth audio player
App lies to : vehicles wi th Blue to oth
With the Bluetooth audio player, you can play
music wirelessly from your 8/uetooth-capable
device (such as a cell phone) through the MMI.
Requirement: the vehicle m ust be stationary and
the Bluetooth function on your Bluetooth device
and the
Bluetooth audio player ¢ page 231 in
the MMI must both be sw itched on.
- Connecting a Bluetooth device: press the
!MEDIA ! button. Press the left control button
until the sources overview is disp layed. Select
and confirm
Bluetooth player@¢ page 217,
fig . 197.
- If ne cessa ry, select and confirm, Not connected
> Connect Bluetooth audio player . The Blue­
tooth device search starts. Follow the instruc­
tions i n the MMI.
- Select and confirm the des ired Bluetooth de­
vice from the list. The MMI generates a PIN for
the connection.
- Select and confirm
Yes .
-Enter the PIN for connecting on your Bluetooth
dev ice.
Or : if the PIN is already displayed on
your Bluetooth device, confi rm it in the Blue­
tooth device and in the MMI. The time allowed
for entering the PIN is lim ited to approximately
30 seconds.
The media is started and operated through the
mobile device o r th e MMI, depending on the de­
vice being used.
(D Tips
- Check fo r any connection requests on your
Bluetooth device.
- You only have to pair your device one time.
Bl ue tooth devices that are already paired