2018 AUDI A4 battery

-Applies to: vehicles with convenience key: Press
the~ button or the lr! button in the luggage
compartment lid, or
- You push the handle in the luggage compart­
ment lid, or
- When something blocks the luggage compa rt­
ment lid or makes it difficu lt for the lid to
move.
I f you press the handle or one of
the~ or lr! but ­
tons (vehicles w ith convenience key*) now, the
luggage compartment lid will either open or
close, depending on its angle .
_&. WARNING
-After closing the luggage compartment lid,
make sure that it is latched. Otherwise the
luggage compartment lid could open sud­
denly when driving, which increases the risk
of an accident.
- Pay careful attent ion when closing the lug­
gage compartment lid . Otherw ise, you could
cause serious inj ury to yourself or othe rs de­
spite the pinch protection .
- To reduce the risk of p inch ing injur ies, al­
ways make sure that no one is in the operat­
ing area of the luggage compartment lid; in­
cluding the hinge areas and the upper and
lower edge of the luggage compartment lid .
- Never dr ive with the luggage compartmen t
lid ajar or open, because poisonous gases
can enter the vehicle interior and create the
risk of asphyxiation.
- If there is a luggage rack (such as a bicycle
rack) on the luggage compartment lid, the
luggage compartment lid may not open
completely under certain circumstances or it
could close by itself if open due to the extra
weight. To reduce the r isk of injury, the
open luggage compartment l id must there­
fore have add itiona l support or the cargo
must first be removed from the rack.
(D Tips
- The settings in the Infota inment system de­
termine if the luggage compartme nt lid ca n
be opened us ing the
handle <=> page 41.
Openin g an d clos ing
-There are audio signa ls when closing the
luggage compartment lid with the remote
control key (vehicles with convenience key*)
or with
the~ button in the dr iver's door.
- When the vehicle is locked, the luggage
compartment lid can be unlocked separately
by pressing
the~ button on the remote
control key. The luggage compartment lid
locks automatically when it is closed again.
- Applies to: vehicles with convenience key:
The luggage compartment lid can be closed
w ith the convenience from a distance up to
approximately 9 ft (3 m).
- The luggage compartment lid can be oper­
ated manually if the vehicle battery is low.
It is necessary to use more force when doing
this. Move the lid s low ly to reduce the
amount of fo rce needed.
- When the t railer socket is being used (for
example, for a bicycle rack), the luggage
compar tment lid can be opened a nd closed
using the handle or the foot mot ion activa­
tion (vehicles w ith convenience key*) .
- In case of an emergency o r a fau lty handle,
the luggage compartment lid can be opened
manually from the
insider=> page 46.
Opening /closing the luggage compartment
lid with foot motion activation (kicking
movement )
Applies to: vehicles with convenience key and sensor-control­
led luggage compartment lid
Fig . 35 Rear of the veh icle: foot movement
Applies to: sedan
You can open the luggage compartment lid with
foot motion activation.
.,.
45

of injuries, never leave children unattended in
the vehicle with the vehicle key.
(D Note
-To reduce the risk of damage to the vehicle
electrical system, never attempt to charge
the vehicle battery by connecting accesso­
ries that provide power, such as solar panels
or battery chargers, to the 12 Volt sockets
or the cigarette lighter.
-To reduce the risk of damage to the sockets,
only use plugs that fit correctly.
Storage
Cup holders
Fig. 73 Rea r cente r arm rest: cup holde rs•
Your vehicle has cup holders in the front center
console and in the center rear seat* .
Cup holders in the rear center armrest*
.,. Fold the center armrest downward.
.,. To open the cup holders, pull the top cover on
the cup holders forward
c::> fig. 73.
.,. Set your beverage in the holder .
.,. To close the cup holder, fold the cover back un­
til it clicks into place.
& WARNING
-Do not put any hot beverages in the cup
holder while the vehicle is moving. Hot bev­
erages could spill, which increases the risk
of injury.
-Do not use any breakable beverage contain­
ers (for example, made out of glass or por­
celain). You could be injured by them in the event of an accident.
Seats and storage
(D Note
Beverage containers in the cup holders should
always have a lid. If not, beverages could spill
and cause damage to vehicle equipment, such
electronics or seat covers.
Cooled glove compartment
App lies to: vehicles wit h coo led g love co mpartment
T he cooled glove compartment only functions
when the AIC system is switched on .
Fig. 74 Glove compart ment : swi tching cooling mode on/
off
.,. Turn the knob @counter-clockwise to switch
the cooling on . The symbols on the knob must
appear as they do in
r=> fig. 74.
.,. Turn the knob @clockwise to switch the cool ­
ing off.
If the heating is switched on, switching the glove
compartment cooling mode off is recommended .
Additional storage compartments
You will find a var iety of storage compartments
and holders at various locations in the vehicle .
-Glove compartment: the glove compartment
can be locked using the mechanical key
c::> page 38, Key set.
-In the door trim panels
- Storage compartment under the front center
armrest
- Storage compartment* in the rear center arm-
rest
- Storage compartment* under the light switch
- Garment hooks above the rear doors
-Nets* on the backrests of the front seats
69

you stop it. You also cannot lock the vehicle from
the outside .
Applies to: vehicles with au tomatic transm issions
Shift to P , otherwise vehicle can roll away.
Doors do not lock if gearshift is not in P
This message appears for safety reasons if the
selector lever is in the N position when you
sw itch the ignition off. Move the selector leve r to
the P position. Otherwise the vehicle is not pro­
tected from ro lling and it cannot be locked .
DJ Remote control key: hold back of key
against the designated area . See owner 's man­
ual
If the indicator light turns on and th is message
appears, there is a malfunction
q page 85 .
Applies to: vehicles with automatic transmissions
Shift to P before leaving 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 . Sh ift the transmiss ion into the P position
and turn off the ignition if you are leaving the ve­
hicle . Otherwise the vehicle could roll. Also see
c::> page87 .
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. 94 Cente r console/ remote contro l key: starting t he
eng ine if there is a malfunc tion
Driving
Requirement: the message Remote control key:
hold back of key against the designated area .
See owner's manual
must display and the DJ i n­
dicator light must turn on.
.,. Place the remote control key on the location
shown in the illustration
y >l) c::> fig . 94.
Applies to: vehicles with manual transmission
.,. Press the clutch pedal.
Applies to: vehicles with automatic transmissions
• Press the brake pedal.
.. Press the !START ENGINE STOP ! button. The
engine will start.
.,. Drive to an authorized Audi dea ler or author­
ized Aud i Service Facility immediately to have
the malfunction corrected.
@ Tips
You can view the message again by pressing
the
I S TART ENGINE STOP I button.
Start/Stop system
Description
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fue l
economy and reduce CO2 emissions.
In Sta rt/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 wi ll restart
automatica lly when needed .
Th e Start/Stop system is a utomaticall y 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 requi rements are met:
IJ>
85

a co .... N ,....
N .... 0 0
3 co
@j indicator light appears in the instrument clus­
ter disp lay, the engine will not be stopped, for
examp le in the following situations:
- T he eng ine has not reached the minimum re­
quired temperature for Start/Stop mode.
- T he interior temperature selected by the cli-
mate contro l system has not been reached .
- T he outs ide temperature is ext remely h igh/low.
- The windshield is being defrosted.
- The vehicle battery charge level is too low.
- The steering whee l is turned at a sharp angle or
is mov ing .
- After engaging the reverse gear.
- On sharp inclines.
- At high a ltitudes.
Engine automatically restarts
The standard Start/Stop mode will be cance led
during a stop phase in the follow ing s ituations .
The engine restarts without any action by the
d river.
- The vehicle rolls, for examp le while on a slope.
- The interior temperature differs from the tem-
perature se lected in the A/C system .
- The windshield is being defrosted .
- The brake pedal is pressed several times in a
row.
- The vehicle battery charge level is too low.
- Power consumption is high.
The engine can t urn off again when the condi­
tions for Start/Stop mode are met.
Ignition is switched off automatically
To prevent the veh icle battery from drain ing, the
ignition will switch off automat ica lly under the
following conditions :
- The Start/Stop system has stopped the engine .
- The veh icle is stationary.
- You left the vehicle and the engine was not re -
started within approximately 30 seconds .
I f this happens, you wi ll see the message
Igni­
tion turns 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 .
Driving
The ignition also switches off when you lock the
vehicle from the outside during a stop phase.
If the Start/Stop system has not turned off the
engine or if you have switched the Start/Stop sys­
tem off manually, the ignition will not be auto ­
matically switched off and the engine will contin­
ue to run
¢ .&..
A WARNING
To reduce the risk of poisoning, never allow
the eng ine to run in confined spaces .
(D Tips
Applies to : vehicles with auto matic transmissions
-
- If you leave the vehicle 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 o rder fo r the engine to switch off again .
' Manually switching the Start/Stop system
, off/on
Applies to: vehicles wi th Start/Stop syste m
If you do not wish to use the system, you can
switch it off manually.
Fig. 96 Cente r console : Start/Stop system button
.,. To switch the Start/Stop system off/on man­
ually, press the
l v'> ~I button. The LED in the but­
ton turns on when the system is switched off .
(D Tips
If you switch the system off during a stop
phase, the engine will start aga in automati­
cally .
87

a co .... N ,....
N .... 0 0
3 co
Also see¢ page 146, Electronic stabilization
control (ESC) .
The all-wheel drive system dist ributes the d riving
power var iably to the front and rear axle. It works
together with selective whee l torque cont rol,
which activates when driving through curves
c:> page 146. With the sport differentia l*, power
d istribution to the rear wheels is variable and can
be adjusted using the dr ive select
c:> page 134.
The all wheel drive concept is designed for high
engine power. Your ve hicle is exceptionally pow­
erful and has excellent driving characterist ics
both under norma l dr iving condit ions and on
snow and ice . Always read and fo llow safety pre ­
cautions
c:> .&. .
Winter t ires
By us ing all wheel drive, yo ur vehicle has good
forward motion with standard tires in w inte r con­
d itions. However, using winter or all season tires
on
all four wheels in the winter is recommended ,
because this will improve the
braking effec t.
Snow chains
If there are snow chain laws, snow chains must
also be used on vehicles with all wheel drive
c:> page 350, Snow chains .
Replacing tire s
For vehicles with all whee l drive, only whee ls with
the same ro lling circumference s hou ld be used.
Avoid using tires w ith different tread depths
c:> page 341, New tires or wheels.
Offroad vehicle?
The ground clearance is too low on some mode ls
to drive on rough terrain. Therefore, avoid off­ road trips.
A WARNING
-Also, in vehicles with a ll w heel d rive, adapt
your dr iv ing style to the current road and
t raff ic conditions . Do not let the increased
safety provided tempt you into tak ing risks,
because t his increases the r is k of an acci­
dent .
Intellig ent Technology
- The braking ab ility o f your vehicle is limited
to the traction of the wheels. In this way, it
is not different from a two wheel drive vehi­
cle . Do not be tempted to accelerate to a
h igh speed whe n the road is sli ppery, be­
cause this i ncreases the risk of an accident.
- No te that o n wet streets, the fron t wheels
can "hydrop la ne" if dr iv ing at speeds that
are too high. Unlik e front wheel d rive
veh icles, the engine does not rev h ig her sud­
denly when the vehicle begins hydrop laning.
F orthisre ason,ad aptyo urspeedto the
road conditions to re duce the risk of an acci­
dent .
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 vehicle with a conventional energy sys­
tem is not drive n for a long time, the ve hicle bat­
te ry is d rained by equipment (for example, t he
immob ilizer). In certa in circ ums tances , there
c ou ld m ay no t be eno ugh e nergy to start the en­
gine.
You r vehicle is equi pped with an in tell igent ener­
gy manageme nt system fo r dist ributing electrici­
ty. This sig nifican tly improves the start ing ability
and in cre ase s t he vehicle battery life.
The ene rgy ma nagement system Is made up of
battery diagnosi s, idling current management ,
and dynamic energy management .
Battery diagnosis
The battery diagnos is determines the vehicle bat­
te ry c harge level. The sensors determine the bat ­
te ry vo ltage, the batte ry cu rrent, and the batte ry
temperat ure. The current c ha rge level and t he
perfo rman ce of the vehicle battery a re de ter-
mine d base d on this.
..,.
151

Intelligent Technology
Idling current management
The idling c urrent management dec reases the
energy used w hile pa rked. With the engine
sw itched off, it manages the energy distribution
to the different elect rical components . Data from
the battery diagnosis is taken into account for
this .
Depending on the vehicle battery charge level,
e lectrical 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 manag em ent
W hil e driving, dynamic energy management dis ­
tr ibutes 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 mai nta in a n optimal vehicle battery charge
level.
(D Tips
- Energy management cannot overcome the
l aws of phys ics . Note that the charge leve l
and leng th of the vehicle battery life a re
li mi ted .
- When the starting ability is endanger ed, the
(•) ind icator light turns on~ page 30.
What you should know
Maintaining the starting ability is the highest
priority.
A lot of stress is placed on the vehicle battery
when dr iv ing short d istances, dur ing c ity dr iv ing,
and at cold times of the year . A lot of energy is
used but little is gene rated . It is a lso cri tical
wh en the engine is not runn ing but e lectr ica l
e qui pment is swi tc h ed o n. In this case, energy is
u sed bu t none is ge nera te d.
In s ituatio ns l ike this, energy management will
actively regu late the d ist ribu tion of ene rgy.
Long pe riods without use
If you do not drive your vehicle for several days or
weeks, electrica l equipment is gradually scaled
back or swi tched off . This reduces energy use and
152 ensures
the vehicle will be ab le to s tart a fter long
periods of time. Some conven ience f unctions,
such as interior lig hting or power seat ad just ­
ment, may not be avai lab le under ce rtain circum­
stances. These conven ience functions will be
available again once you switch the ignit ion on
and sta rt the eng ine.
With the engine switched off
The vehicle battery will drain if you use Infotain ­
ment functions such as listening to the radio
whi le the engine is switched off.
If the vehicle's ability to start may be impaired by
the energy use, a message will appear i n the In­
fota inment system display. The message indi­
cates that the system will switc h off automatical­
l y soon. If yo u wou ld like to continue using the
funct io ns, you must s tart the engine .
With the engine running
Although electr ica l energy is generated w hile
driv ing, the veh icle battery can d ra in. This can
happe n if litt le ene rgy is generated but much is
used, and the charge level of the vehicle battery
is not optimal.
To resto re t he ba lance of energy, components
that require large amounts of energy are tempo­ rarily scaled back or sw itched off. Heat ing sys ­
te ms in pa rticula r r equir e a great deal of e nergy .
I f you notice, fo r example, t hat the seat heati ng*
o r r ear window defogger is not wor king, then it
h as been tempor arily reduce d or switched off.
These sys tems are avai lab le aga in as soon as t he
energy supp ly has been restored.
I n add it ion, yo u may notice tha t the idle speed
h as slig htly incre ase d. Tha t is normal and no
ca use for concer n. By in creasing the idling spee d,
the addit io na l required energy will be gene rated
and t he vehicle battery w ill be charged.

Multi Media Interface
Switching the MMI on /off : the M MI can be
switched on/off manua lly.
- Switching on manu ally : press the On/Off knob
@ c> fig. 159 briefly . Or: press the I MENU ! but­
ton ®
c> page 155 , fig. 157 or c> page 155,
fig . 158,
or one of the buttons to open the me ­
nus d irectly @.
-Switching off manually : press and hold the
On/Off knob
@ c> fig. 159 until the MMI
switches
off. If the MMI has bee n switched off
manually, it does not switch on again au tomati­
ca lly the next time the ignit io n is switched on .
Additional functions :
- Adjusting the volume :
tu rn the On/Off k nob @
.:>fig. 159.
-Muting : press the O n/Off knob @.:> fig. 159
briefly.
-Selecting the previou s/next function (for ex ­
ample, a radio stat ion /tra ck ):
press the On/Off
kn ob @ .:> fig. 159 briefly toward the le ft l«l or
rightt>C>I .
-Fast forwarding /re winding (for example
song s):
p ress and hold the On/ Off knob @
c> fig. 159 toward the left l«l or right t>C>I.
A WARNING
Adjust the volume of t he a udi o system so that
signa ls from outside t he ve hicle, such as po­
lice and fire sirens, can be heard easily at all
times .
@ Tips
The MMI sw itches off automatically if the en­
gine is not r unning and the vehicle battery is
low .
Infotainment system
display
Switching on and off
- Switching on and off manually :
press the roJ
button @ c> page 8, fig. 2.
When the M MI i s switched o n and the disp lay is
sw itched off, you can operate certa in f unct io ns
using the On/Off knob with t he M MI joystick
function
.:> page 155.
156
Information on display images
The display version depends on vehicle equip­
ment .
Fig. 16 0 Disp lay ve rs ion A
F ig. 161 Disp lay ve rs ion B
Additional content (such as album cover and map
mater ial) is shown on display ve rsion
B, if appli ­
cable@.:> fig. 161 . Because the other content
shown on the displays is nearly identical between
the two vers ions, this manual will p rimari ly de­
scribe display version A .

Audi connect vehicle control
Audi connect vehicle
control
Introduction
Applies to veh icles with Audi co nnect vehicle control
With the Audi connect vehicle control services 1>,
you can access various information or use individ­
ual functions in the
Audi MMI connect app or in
myAudi .
Audi connect vehicle control includes the follow­
ing services:
- Remote locking and unlocking ¢
page 199.
-Vehicle status report <:!>page 199 .
-Parking location o page 199.
-Geofencing Alert r::!> page 200.
-Speed Alert o page 200 .
-Valet Alert o page 200 .
- Stolen Vehicle Locator o page 200.
-Online Audi service request o page 200.
(D Tips
-Accessing specific data or controlling func­
tions remote ly depends on the charge level
of the vehicle battery. Therefore, these
funct ions only have limited availability after
switching off the ignit ion.
- The services are provided through a SIM
card installed in the vehicle. The cost of the
call and data connections is included in the
price for the services . Services are provided
assuming that the cell phone network re­
quired for the installed S IM card is funct ion­
in g and ready to operate. The available serv­
ic es set by Aud i AG are only available within
the cell phone network coverage area for
the cell phone service provider selected by
Audi AG .
- You can also find more information on Audi
connect on line at www .audiusa .com .
ll In pr ep aratio n at t he tim e of p rinting. The ava ilab ilit y o f
the serv ice s offe re d depends on th e co untry and may
c han ge ove r tim e.
198
Setup
Applies to vehicles w it h Aud i connect vehicle control
To use Audi connect vehicle control services l),
please note the fo llowing :
Creating and verifying a user account
""Create an account at www.audiusa.com/myaudi
and verify it.
Setting a key user in the vehicle
Requirements : the ignit ion must be switched on .
Anothe r key user must not be set in the veh icle .
If necessary, reset the key user ¢
page 199.
""Select in the Infotainment system: IMENU ! but-
ton >
Audi connect > if necessary, Display
available functions >
right control button>
Audi connect user management > Key user >
Set key user .
"" Enter the user name for your ve rified account
and enter the IO-digit vehicle code. You can rub
the key tag for your remote control key to re­
veal the vehicle code
r::!> page 38.
"" Select and confirm Log in .
You can now use the veh icle control services
through the
Audi MMI connect app or through
www.audiusa.com/myaudi .
Using vehicle control services in the Audi
MMI connect app
Requirement: your mobile devices must be com­
patible.
"" Insta ll and start the
Audi MMI connect app on
your mobi le device .
"" Log in to the
Audi MMI connect app using your
user name and Audi online password and select
your vehicle .
(D Tips
-Store the vehicle code in a secure place. It
may be necessary to re-enter the vehicle
code.