2012 AUDI A7 battery replacement

30 Opening and clo sing
Removing the mechanical key
Fig. 17 Remote control master key: remo vin g the me­
ch ani cal key
> Press the release button @ c:> fig. 17 .
.. Pull the mecha nica l key @out of the mas ­
te r key.
Using the mechan ica l key, you can:
- lock and unlock the storage compartment
on the passenger's side
c:> page 56.
- lock and unlock the vehicle manually
<=>page 34.
-lock the front and rear passenger doors me­
chanically
c:> page 35.
Master key battery replacement
Fig . 18 Remote mas ter key: Removing the batter y
ho lder
Ch eck light in the master ke y
The check light @in the master key provides
information about d ifferent cond itions .
.. The check light comes on briefly once when
a button is pressed , and during an "inquiry"
by the convenience key system .
> If the check light does not come on, the
battery is dead and has to be replaced . In
addition, when the bat tery is dead the
I!
symbol appears in the instrument cluster disp
lay as well as the message:
Ple ase
c h ange key batt ery.
Ma ster key batter y replacement
We recommend having the batte ry changed
by an authorized Audi deale r. However, if you
wish to rep lace the dead battery yourse lf, pro­
ceed as follows:
> Pull the mechanical key out of the master
key
c:> page 30 .
.. Press the release button @ on the battery
holder and at the same time pull the battery
holder out of the master key in the direction
of the arrow .
.. Install the new battery CR 2032 with the
"+" sign facing down.
> Push the battery holder carefully into the
maste r key .
> Insta ll the mechanical key.
@ For the sake of the env ironment
D ispose of dead batteries properly so as
not to pollute the environment.
(D Tips
The replacement battery must be the
same specification as the original.
Electronic immobilizer
The immobilizer helps to prevent unauthor­
ized use of your vehicle .
A computer chip ins ide your key automatically
deactivates the electronic immobilizer when
the key is inside the vehicle . When you remove
the key from the vehicle, the electron ic immo­
bilizer is automatically ac tivated once aga in .
.&, WARNING
-
A lways take the key with you when you
l eave the vehicle . T he key can disarm the
e lectronic engine immobilize r and permi t
an unauthorized person to start the engine
and enable operation of the vehicle sys ­
tems such as power window or power sun- roof leading to serious personal injury.
~

12-volt sockets
Fig. 53 Section of the trim panel of the luggage com­
partment: 12-volt socket
Fig . 54 Rear center console: 12-volt socket
~ To reach the 12-volt socket in the luggage
compartment, press the net down or re­
move the bracket from the mounts
Qfig . 53.
There is an additional 12-volt socket in the
front and rear center console¢
fig. 54.
0 5 0 /li
The 12 volt sockets may be used for 12-volt
appliances with max imum cons umption of up
to 120 watts.
Before you purchase any accessories, always
r ead and fol low the information in
¢ page 2 75, Additional accessories and parts
replacement .
A WARNING
The sockets and the e lectrica l accessories
connected to them operate on ly when the
ignition is switched on. Incorrect usage
can lead to serious injuries or burns. To re­
duce the risk of injuries, never leave chil­
dren unattended in the vehicle with the ve­
hicle key.
S ea ts a nd s to rage 55
(D Note
To avoid damaging the socket, only use
plugs that fit properly.
- Never connect equipment that generates
electrical current, such as a solar pane l
or battery charger, to the 12 volt socket.
This could damage the vehicle's electri­ cal system.
- The 12 volt socket shou ld only be used
for a short period of ti me as a power
source for electrical equ ipment. Please
use the electr ical sockets in the vehicle
when con necting equ ipment for longer
periods.
- To avoid damaging the socket, only use
plugs that fit properly.
(D Tips
When the engine is off and accessories are
still plugged in and are on, the vehicle ba t­
tery can still be d rained.
Storage
(upholder
Fi g. 55 Ce nter console: cupholder
Fig. 56 Rear center armrest: cupholde r extended

adult is properly seated and restrained at
one of the rear seating positions.
- Have the airbag system inspected by
yo ur Audi dealer before transporting
anyone on the front passenger seat.
(D Tips
If the capacitive passenger detection sys ­
tem determines that the front passenger
seat is empty, the frontal airbag on the
passenger side will be turned off, and the
P ASS ENGER AIR B AG OFF light will stay
on.
Repair, care and disposal of the airbags
Parts of the a irbag system are installed at
many different places on your Audi. Installing,
removing, servic ing or repairing a part in an
area of the vehicle can damage a part o f an
airbag system and prevent that system from
working properly in a co llision.
There are some important things you have to know to make sure that the effect iveness of
the system will not be impaired and tha t dis ­
carded components do not cause injury or po l­
l ute the env ironment.
A WARNING
Improper care, servicing and repair proce­
dures can increase the risk of personal in­
jury and death by preventing an airbag
from deploy ing when needed o r deploying
an airbag unexpected ly:
- Never cover, obstruct, o r change the
steering wheel ho rn pad or airbag cover
o r th e instrument pane l or modify them
in any way.
- Never attach any objects such as cup
holders or telephone mountings to the
surfaces covering the airbag units.
- For cleaning the ho rn pad or instrumen t
pane l, use only a soft, d ry cloth or one
mois tened w ith plain wate r. Solven ts or
cleaners co uld damage the airbag cover
or change the stiffness o r strength of the
A irbag sys tem 153
material so that the airbag cannot de­
ploy and protect properly.
- Never repair, adjust, or change any parts
of the a irbag system.
- All work on the steering wheel, instru­
ment panel, front seats or e lectr ica l sys­
tem (including the installation of audio
equ ipment, cellu lar telephones and CB
radios, etc.) must be performed by a
qualified technic ian who has the training
and specia l equipment necessary.
- For any work on the airbag system, we strongly recommend that yo u see your
author ized Audi dealer or qualif ied work­
shop.
- Never modify the front bumper or pa rts
of the vehicle body.
- Always make sure that the s ide a irbag
can inflate without inte rfe rence:
- Never in.stall seat covers or rep lace­
ment upholstery over the front seat­
backs that have not been specifically
approved by Audi.
- Never use additional seat c ushions that
cover the areas where the side a irbags
i nflate.
- Damage to the orig inal seat cove rs or
to the seam in the area of the side a ir­
bag module must a lways be repaired
i mmediately by an author ized Audi
dealer.
- The airbag system can deploy on ly once.
After an a irbag has been deployed, it
m ust be replaced with new replacement
pa rts des igned and app roved espec ially
for your Aud i mo del ve rsion. Replace­
men t of comple te airbag systems or air­
bag components must be performed by
qualified workshops only . Make sure that
any airbag service action is entered in
your Audi Warranty
& Maintenance book­
let under
AIRBAG REPLACEMENT RE­
CORD.
- For safety reasons in severe accidents,
the alternator and starter are separated from the veh icle battery with a pyrotech-
nic circuit inte rrupte r. .,.. •
•

230 Checking and filling
(D Note
Never use a fast charger as a booster to
start the engine. This will seriously dam­
age sensitive electronic components, such
as control units, relays, radio, etc., as well
as the battery charger.
Battery replacement
The new battery must have the same specifi­
cations and dimensions as the original equip­
ment battery.
Intelligent energy management in your vehi­
cle is responsible for distributing the electri­
cal energy throughout your vehicle
~ page 190. The intell igent energy manage­
ment system will keep the engine battery
charged better than vehicles without this sys­
tem. To make sure the additional electrica l en­
ergy is available once again after you have
changed the battery, we recommend that you install batteries of the same type and manu­
facture only (the same as those installed at
the time your vehicle was delivered). Specifi­
cations are listed on the battery housing. Your
author ized dealer must code the battery in
the energy management system to enable you
to use the energy management funct ions cor­
rectly after replacing the battery .
The new battery must have the same capacity,
voltage (12 volts), amperage, construct ion
and plug sealing.
When installing the battery, make sure the ig­
nition and all electr ical consumers are switch ­
ed off.
(D Note
Make sure the ventilation hose on the side
of the battery is connected, otherwise
fumes or battery ac id can leak out.
@ For the sake of the environment
Because of the problem of proper disposal
of a battery, we recommend your author­
ized Audi dealer change the battery for
you . Batteries contain su lfuric acid and l
ead and must always be disposed of prop­
erly in compliance with all environmental
regulations. Disposing of vehicle batter ies
i mproperly is very dangerous to the envi­
ronment.
Windshield/head Light
washer container
Fig. 175 En g in e compart men t: w inds hield and head ­
lighr washer fluid reservoir
The washer fluid conta iner is marked w ith the
symbol~ on its cap.
"' Before you check anything in the engine
compartment,
always read and heed all
WARNINGS ~.&. in Working in the engine
compartment on page 216.
"' Lift the filler cap tongue to add washer flu ­
id. You can fill the container to the top.
"' Press the cap back onto the filler neck after
fi lling the container.
You can find the reservoir
capacity in the table
in
~ page 272.
Clean water should be used when filling up. If
possible, use soft water to prevent scaling on
washer jets. Always add a glass cleaner solu­
tion (with frost protection in the winter).
@ Note
Do not mix engine coolan t ant ifreeze or
any other additives to fill up the wind­
shield washer reservoir .

Glove compartm ent (cooled) . . . . . . . . . . . 56
Gross Veh icle Weight Rating (GVWR) ... 270
H
Head-up Di splay . . . . . . . . . . . . . . . . . . . . . 26
H eadlig hts
C leaning system ... .... ... .. .. .. .. ..
45
Defective .. ...... ..... .. .... .. .. .. 20
H eadlig ht range control . . . . . . . . . 21, 41
Washer rese rvoir .......... ... ... .. 230
Head restraints . . . . . . . . . . . . . . . . . 52, 122
Ad justing .. .. .. .. .... ... .. .. .. ... 122
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 52
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . 52
Removi ng .. .. ... .. ... ... .. .. .. .... 52
Heated
exterior mi rrors ....... ... .. .. .. .. ..
47
rear window (automatic climate contro l) 68
rea r window (cl imate control) . .. .. .. .. 66
seats (automatic climate contro l) . . . . . . 68
seats (cl imate control) .......... .... . 66
windshie ld washer spray nozzl es ... ... 45
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
H eavy clo thing and safety belts . .. .. .. . 13 1
High beam . ................ ... ... ... 43
H igh voltage warning labe l .. .. .. .. .. . 270
H ome Link ® universal remote cont ro l .. . 115
Hood (release lever) ........ .. .. .. .. . 216
H orn ... .. .. .. ... .. ..... ... .. .. .... . 8
H ow are c hild restra int system anchors re-
l ated to child safety ............. ....
177
How many airbags does my vehicle have? 145
H ow o ften sho uld I check my t ire p res-
sures? . ... .. .. .... .. .... ... .. .. ...
23 8
How safety belt pre tensione rs wo rk ... . 135
Hydroplaning ............. .... .. .. . 242
I
Immo bilizer . . . . . . . . . . . . . . . . . . . . . . . . 25
Impor tant things to do before driving . . 118
Improperly worn safety belts . .. .. .. .. . 134
Indica to r ligh ts
refer to Wa rning/indicator lights . ... .. 11
Infant seats ... ........... .. .. .. .. . 169
Inde x 283
Installing child safety seats
Safety be lts . . . . . . . . . . . . . . . . . . . . . .
1 7 4
Installing the upper tether s trap on the
an cho rage .. .. .. .. .... ........... ..
180
Instruments
Adjus ting the light ing ......... .... .. 44
Instruments and controls General illustration . . . . . . . . . . . . . . . . . . 8
Instrument cluster .. ........... .... .
10
Interior ligh ting
Ambience lighting . .. .. .. ..... ... .. . 44
Front and rear ..... . .. .. ..... ... .. .
44
Inter mittent (w indshield wipers) .. .. .. . 4 5
l
Jack 252
Jump-starting . .. .. .. ............... 264
Jumper c ables . .. ...... ............. 2 65
K
Key ........... ... .. ................ 29
Battery replacement master key . . . . . . . 30
Emergency key . ...... ........... .. . 29
K ey rep lacemen t . . . . . . . . . . . . . . . . . . .
29
Master key . . . . . . . . . . . . . . . . . . . . . . . . 29
Mechan ica l key ..... . .. .. ..... ... .. . 30
Valet key . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Kick-down
t iptron ic . ....... .. . .. ... .... ... ..
104
Knee a irbags ....... ................ 154
Desc ription .. .. .. .. ... ....... ..... 154
H ow they wor k ... ................. 156
Important sa fety inst ru ctions .... .. .. 156
L
LATC H 177
Des cription .. .. .. ................. 178
Installing a ch ild restr aint ....... .. .. 179
Loca tion . ... .. .... . ... ...... ... .. 178
Mounting and releasing the anchorage
hook ... .. .. .... .. . .. .. ..... ... ..
1 79
Leat he r .. .... .. .... ... .......... .. 2 0 7
Leather (cleaning) .. .... ......... .. .. 208
Leav ing home ..... .. . .. .. ..... ... .. . 4 3
Lifting jack ....... .. ..... .......... 256
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