2018 AUDI A7 battery

a co .... N
" N .... 0 00 \,;J ' h). To stop the engine, press and hold the
I START ENGINE STOPI button and also press the
brake pedal.
A WARNING
- Never turn off the engine 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 may need to
use more force when braking or steering.
Because you cannot brake and steer as you
usually would, this could lead to accidents
and serious injuries.
- Always take the key with you whenever you
leave your vehicle. Otherwise, the engine
could be started or electrical equipment
such as the power windows could be operat­
ed. This can lead to serious injury.
- For safety reasons, always park the vehicle
with the selector lever in the P position.
Otherwise, there is the risk that the vehicle
could roll unintentionally.
@ Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the engine is
switched off and there is a risk of damaging
the engine. For this reason, let the engine run
at idle for approximately two minutes before
shutting it off.
(D Tips
For up to 10 minutes after stopping the en­
gine, the radiator fan may turn on again auto­
matically or it may continue to run (even if
the ignition is switched off) for the following
reasons:
- The coolant temperature is increasing due
to trapped heat.
- If the engine is warm and the engine com­
partment also heats up from strong sun­
light.
- Applies to: vehicles with particulate filter:
The emissions control system is heated
through the regeneration process, even if
the engine has not reached its operating
temperature yet.
Driving
Messages
Turn off ignition before leaving car
This message appears and a warning tone sounds if you open the driver's door when the ignition is
switched on.
Press brake pedal to start engine
This message appears if you do not press the
brake pedal when starting the engine.
fll Is key in the vehicle?
This indicator light turns on and this message ap­
pears if the ignition key was removed from the
vehicle when the engine was running. If the igni­
tion key is no longer in the vehicle, you cannot
switch on the ignition or start the engine once
you stop it. You also cannot lock the vehicle from
the outside.
Shift to P, otherwise vehicle can roll away.
Doors do not lock if lever is not in P.
This message appears for safety reasons if the
transmission is not in the P position when you
switch the ignition off. Move the selector lever to
the P position. Otherwise the vehicle is not pro­
tected from rolling and it cannot be lock ed.
II Key is not recognized. Hold back of key
against marked area. See owner's manual
If the indicator light turns on and this message
appears, there is a
malfunction ~ page 70.
Turn off ignition before leaving car. Battery is
discharging
This message appears if the driver's door is opened while the ignition is switched on. Always
switch off the ignition if you are leaving the vehi­
cle. Also see
~ page 71 .
Shift to P and turn off ignition 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
selector lever is not in the P position . Move the
selector lever into the P position and switch the
ignition off when you exit the vehicle . Otherwise
the vehicle could roll. Also see
~ page 71 .
69

Driving
Starting the engine when there is a
malfunction
It may not be possible to start the engine under
certain circumstan ces, 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 . 77 Cen te r co nsole /rem ote co ntro l key : sta rt ing t he
en gine
if t h ere is a m alfu nction
Req uiremen t: the messa ge Key i s no t recog­
nized . Hold back of key against marked a rea.
See owner's manual
must app ear and the DJ in ­
dicator light must tu rn on .
,.. Hold the remo te contro l key in the loc ation in­
dicated as shown in the illustration
y >l) c::> fig . 77.
,.. Press the b rake pedal.
,.. Press the I S TAR T ENGINE STOPI button . The
engine will start.
,.. Drive to an authorized Audi dealer or author­
ized Audi Service Facility immed iately to have
the malfunc tion cor rected .
(D Tips
You can view the message again by pressing
the
I START ENGINE STOP ! button.
Start/Stop system
Description
Applies to: veh icles with Sta rt/Stop system
The Start/Stop system can help increase fuel
economy and reduce
CO 2 em issions.
I n Start/Stop mode, the engine shuts off a uto­
mat ica lly w hen the veh icle is stopped, such as at
ll Ma rket -spe cifi c
70
a traffic light . The ignition remains sw itched on
during this stop phase . The engine wi ll restart
automat ica lly w hen needed .
Applies to A7 Sportback: the Start/S top system
activates au tomatically once t he ignition is
switched on .
Applies to 57 Spo rtback: the last Sta rt/S top sys­
tem set ting is res tored when the ign it io n is
swi tched on .
Basic requirements for Start/Stop mode
- The d rive r's doo r must be closed .
- The driver 's seat be lt much be fastened .
- The hood must be closed .
- The vehicle m ust have driven faster than
2.5 mph (4 km/h) since the last t ime it stop­
ped.
- A t railer m ust not be hitched to the vehicle .
@ Note
A lways switc h the Sta rt/Sto p system off when
driving thro ugh water
c::> page 70.
a) Tips
T he engine s tops shor tly before the ve hicle
comes to a stop
ll.
Stopping/starting the engine
Applies to: vehicles with Start/Stop system
Fig. 78 In str umen t cluste r: e ngin e sw it ch ed off (stop
p hase )
,.. Bra ke the vehicle to a stop. The engine stops
shortly before the vehicle comes to a stop or if
the vehicle is stat ionary
1> . Keep your foo t on .,..

the brake pedal. The [IJ indicator light appea rs
in the information line at the bottom of the in ­
str ument cl uster d isp lay . The needle in t he
tachometer also moves into the
READY pos i­
t ion
ll .
"'The eng ine starts aga in when yo u take yo ur
foot off t he brake pedal. The ind icator light
tu rns off .
Additional information
The engine stops in the P, N and D se lecto r lever
positions.
If yo u select the R pos ition dur ing a stop phase,
the eng ine will start again.
Shift to P quickl y to prevent t he en gine from
starti ng u ninten tiona lly w hen s hift ing t hrough R.
You can dete rm ine fo r yo urself if t he e ng ine will
s top o r not b y reducing or increas ing the amoun t
of force yo u use to p ress the bra ke pe dal. Fo r ex ­
ample, if you only lig htly press on t he b rake ped ­
a l in stop -and -go traffic or w hen turning, the en ­
g ine will not switch
off when the vehicle is sta­
tionary. As soon as yo u press the brake down
ha rder, the eng ine will sw itc h off.
(D Tips
- Press t he b rake pedal durin g a Stop phase
to keep the ve hicle from roll ing.
- The ignition wi ll tu rn
off if you press the
I START E N GINE ST OP I button dur ing a stop
phase. The nee dle in the tachomete r moves
i nto the
OFF posi tio n.
General information
A pp lies to: ve hicles w ith Sta rt/Stop system
The standard Start/Stop mode can be canceled
for various system-related reasons .
Engine does not switch off
Before and during eac h stop phase, the system
checks if certai n cond itions have been met . If the
fjj indicato r light appears in the instrument cl us­
ter d isp lay, the engine w ill not be stopped, for
a ~ examp le in the fo llow ing s ituations:
N
" N ..... 0 00
~ ll Ma rket -spe cific
Driving
- The engine has not reached the minim um re ­
qui red tempe rat ure for Sta rt/Sto p mode.
- The interior tempera ture selec ted by the cl i-
mate co ntrol system has not been reached .
- The ou tside te m pe rat ure is ex tremely high/low.
- The win dshi eld i s bei ng
d efros ted® .
-The parking sys tem * is sw itched on .
- The vehicle battery charge level is too low .
- The steering wheel is tu rned at a sha rp angle o r
is moving.
- After engaging the reverse gear .
- On sharp incl ines .
Engine automatically restarts
The stan dard S tart/S top mode w ill be canc eled
dur ing a sto p p hase in the followi ng si tuatio ns.
T he eng ine res tarts wi thout a ny ac tion by the
drive r.
- The ve hicl e ro lls, fo r ex am ple whi le o n a slo pe.
- The inte rior tempe ra ture differs from t he tem-
pe ra tu re sele cte d in t he A/C sys tem.
- The winds hield is bei ng
d efros ted® .
-The brake peda l is pressed severa l times in a
row .
- The vehicle battery charge level is too low.
- Powe r consumption is high .
T he eng ine can turn off ag ain when the cond i­
tions for Sta rt/Sto p mode a re met.
Ignition is switched off automatically
T o p reve nt t he vehicle batte ry from dra ining, the
i gni tion will switc h off
automatically und er the
f o llow ing co nd itio ns:
- The vehicle has already been dr iven .
- The Start/Stop system has stopped the engine .
- The driver 's door is opened.
- The driver's sa fety belt is unbuck led .
- The brake peda l is not presse d.
- The ve hicl e is sta tion ary.
In this case , the activated low beam is re placed
by the p arking ligh t. T he par kin g lig hts wi ll
swi tch off afte r appr oximat ely 30 minu tes or
whe n you lock the ve hicle.
71

Driving
App lies to: ve hicles w ith S tro nic t ra n smi ssio n
Ii) 10 Tran sm issio n m alfunctio n: N o reve rse
ge ar. You c an c ontinue d riv ing
There is a system malfunct io n in the t ransm is­
sion . T he transmission is switching to emergency
mode. This mode only shifts into certain gears or
will no longer shift at all. The engine may stall.
You cannot engage the r everse gear. Drive to an
author ized Audi dealer or author ized Audi Service
Facility immediately to have the malfunction cor­
rected .
[!l Transmi ssio n m alfun cti on : Sto p vehicl e and
s hift t o park .
Do not cont inue drivi ng. Select the P se lector lev­
er position and see an authorized Audi dea le r or
author ized Audi Service Facility for assistance.
(D Note
If the transmission has switched to emergen­
cy mode, drive to an author ized Audi dealer or
author ized A udi Se rvice Facility immediate ly
to have the ma lfunction corrected.
Selector lever emergency release
If the vehicle's power supply foils, the selector
lever con be released in on emergency.
F ig. 85 Fro nt ce nter console: emergency release for t hese ­
l ector lever
.,. T o reach the emergency release mechanism, re­
move t he ashtray insert * .
.,. Loosen and remove the sma ll cap in the ashtray
mount ~ fig. 85 .
.,. You now have access to a pin . Using a screw­
driver or s imilar object, press the pin down and
hold it in that posit ion.
80
.,. Press the release button in the selector lever
and move it into the N position .
Only move the selec tor lever o ut of the P posit ion
when the ignition is switched on. If the vehicle
must be pushed or towed due to a power failure
(for example, the vehicle battery is drained), the
selector lever must first be moved to the N posi­
tion using the emergency release mechanism.
A WARNING
- Only activate the emergency release while
on a level surface or a slight slope .
- Only move the selector lever out of the P po­
sition when the parking brake is set. If it is
not funct ioning, secure the veh icle from
ro lling using the brake pedal or other suita­
ble means, such as b locking a front and a
rear wheel. An unsecured vehicle may roll
away, which increases the risk of an acci­
dent .

Assistance systems
@ Tips
-Side assist is not active while you are mak­
i ng the adjustment.
- Your settings are automatically stored and
assigned to the remote control key being
used.
Messages
Applies to: ve hicles w ith Audi side assist
If side ass ist switches off by itself, the LED in the
button turns off and a message will appear in the
instrument cluster display:
Audi side assist: Currently unavailable . No
sensor vision
The radar sensor v is ion is impaired . Do not cover
the area in front of the sensors with b ike wheels,
stickers, dirt or other objects . Clean the area in
front of the sensors, if
necessary¢ page 100,
fig . 107.
Audi side assist: Currently unavailable
Side assist cannot be switched on at th is 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 w ill 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
authorized Audi Service 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 sw itch off when using
a retrofitted trailer hitch. Do not use side assist
when towing a trailer.
102
Night vision assist with
pedestrian and wild
animal detection
Description
App lies to: vehicles wit h night vision assist
The night vision assist can detect, highlight and,
if necessary, warn about pedestrians and large wild animals.
Night vision assist with pedestrian and wi ld ani­
mal detection assists you at night by using an
in ·
frared camera to monitor the area in front of
your vehicle, within the limits of the system. It can d isplay objects up to a distance of approxi­
mately 1000 feet (300 m). The thermal image
detected by the camera is shown in the instru­
ment cluster display. Warm areas appear lighter
and cold areas appear darker.
Highlighting detected pedestrians and wild
animals
Applies to: vehicles wit h night vision assist
Fig. 109 In stru men t cl uste r: yellow highlighted pedes ·
tria ns
Fig. 110 Instrument cl uster : sy mbol when the infrar ed im ­
age is not v isible
Within th e limits of the system, the night vision
ass ist can detect pedestrians and wild animals
..,..

Intellig ent T echn olo gy
A WARNING
When extending and retracting the rear spoil­
er, make sure there are no persons or objects
w ith in the spoiler range to reduce the risk of
injury .
A WARNING -
Driv ing at higher speeds w ithout the rear
spoiler dep loyed can impa ir hand ling cha rac­
ter istics, mak ing the veh icle h arder to con­
trol.
- Always make sure that the spoiler is de ­
ployed whe n driving at speeds ove r 85 mp h
(140 km/h) . If the rear spoiler warning/indi ­
cator lig ht in the instrument cluster comes
on, the rear spoi ler may not have deployed.
- Never drive at speeds higher than 85 mph
(140 km/h) if the spoiler is not deployed .
Have the spoiler inspected as soon as possi­
ble by an author iz ed Audi dealer or qualif ied
workshop.
- Always obey speed limits and other traffic
laws .
@ Note
-Never push on the vehicle on the rear spoi l­
er . T his cou ld cause damage.
- To prevent damage to the rear spoiler do not lean or p lace anyt hing on it.
- Only operate t he rear spoiler manually when
the luggage compartment lid is close and
the rear spoiler moving parts are not
blocked. Otherwise, damage could occur.
(D Tips
Clean the rear spoi ler compartment every 2 to
3 months . To function correctly, the rear
spoiler must be free of ice, snow and leaves.
126
Energy management
The starting ability is optimized
T he energy management sys tem 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 driven for a long time, the veh icle bat­
tery is drained by equ ipment (for example, the
i mmob il izer). I n certa in circumstances, there
could may not be enough energy to start the en ­
gine.
Your vehicle is equipped with an intell igent ener­
gy management system fo r dist ributing elect rici­
ty. Thi s sign if icantly improves the start ing ab il ity
and increases the vehicle battery life .
The energy management system Is made up of
battery dia gno sis , idling current management ,
and dynamic energ y m ana gement .
Battery di agnosis
T he battery diagnos is determines the vehicle bat ­
tery cha rge level. The sensors detect the batte ry,
t h e battery cur rent, and the battery temperature .
The current cha rge level and the pe rformance of
t h e ve hicle battery are dete rm ined based on th is.
Idling current management
The idling current management decreases the
energy used while parked . With the engine
switched off , it ma nages the ene rgy distr ib ution
to the d ifferent e lectr ica l components . Data from
t h e battery d iagnosis is ta ken into a ccou nt for
t hi s.
Depend ing on the vehicle batte ry cha rge level,
electr ical eq uipme nt is switched off one item af ­
te r th e o ther to p revent the veh icle bat tery from
dra ining and to ma intain the starting ab ility.
Dynamic energy manag ement
While driv ing , dynam ic energy management dis­
t ributes the app ropr iate amo unt of energy to t he
electr ical eq uipme nt.
It contro ls the batte ry
c h arge level so tha t the amount of energy is no t
..,.

a co .... N
" N .... 0 00 \.J ' greater than the amount being generated in or­
der to maintain an optima l vehicle battery charge
level.
(D Tips
-Energy management cannot overcome the
l aws of physics. Note that the charge leve l
and length of the vehicle battery life are
limited.
-When the starting ability is endangered, the
(•) indicator light turns on qpage 14.
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 co ld times of the year. A lot of energy is
used but little is generated. It is a lso 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, e lectrica l equipment is gradually sca led
back or switched off. This reduces energy use and
ensures the vehicle wi ll 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
ava ilable again once you switch the ig nition on
and start the engine.
With the engine switched off
The vehicle battery will drain if you use Infota in­
ment functions such as listening to the radio
while the eng ine is switched off.
The vehicle's ability to start may be impaired by
the energy use, a message will appear in the In­
fotainment system d isplay .
The message ind icates that the system will
switch off automatically soon. If you wou ld like
Intelligent Technology
to continue using the functions, you must start
the engine.
With the engine running
Although e lectr ical energy is generated wh ile
dr iv in g, the veh icle 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.
To r esto re the balance of energy, components
that require large amounts of energy are tempo­
rarily 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 work ing, then it
has been temporarily reduced or sw itched off.
These systems are available aga in as soon as the
energy supply has been restored .
In add ition, you may notice that the idle speed
has slightly increased. That is normal and no
cause for concern. By increasing the idling speed,
the addit ional required energy will 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 equ ipped w ith an Event Data Re­
corder (EDR) . The ma in purpose of an EDR is to
record, in certain crash or near crash-l ike situa­
tions, such as an airbag deployme nt or hitt ing a
road obstacle, data that will ass ist in understand­
ing how a vehicle 's systems performed. The EDR
is designed to record data related 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
be lts were buckled/fastened;
-How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
..,.
127

Airbag system
must be performed by qualified workshops
only. Make sure that any airbag service ac­
tion is entered in your Audi Warranty
&
Maintenance booklet under AIRBAG RE·
PLACEMENT RECORD .
-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 circuit 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 applicable safety precautions
must be followed .
@ For the sake of the environment
Undeployed airbag modules and pretension­
ers might be classified as Perchlorate 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 w ith pretensioners are scrapped,
all applicable laws and regulations must be
observed . Your authorized Audi dealer is fa­
miliar with these requirements and we recom­
mend that you have your 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-rim
comb inations not approved by Audi, lower ing the
vehicle, chang ing the stiffness of the suspension,
including the springs, suspension struts , shock
absorb ers etc . can change the forces that are
measured by the airbag sensors and sent to the
electronic control 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 which it would not deploy if
the changes had not been made. Other kinds of
162
changes may reduce the force levels measured by
the sensors and prevent the airbag from deploy­
i ng when it should .
& 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 personal injury in a
crash .
- Never install suspension components that do not have the same performance charac­
teristics as the components origina lly instal­
led on your vehicle.
- Never use tire-rim combinations that have
not been approved by Aud i.
Knee airbags
Description of knee airbags
Applies to: vehicles with knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants.
Fig . 157 D river 's knee airbag
The driver knee airbag is in the instrument panel
underneath the steering wheel ¢
fig. 157, the
airbag for the passenger is at about the same height in the instrument panel underneath the
glove compartment.
The knee airbag offers add itional protect ion to
the driver's and passenger's knees and upper and lower thigh areas and supplements the protec­
tion prov ided by the safety belts .
If the front airbags deploy, the knee airbags also
deploy in frontal coll is ions when the deployment
..,.