2016 AUDI A8 battery replacement

Removing the mechanical key
Fig. 19 R emote control master key: removing the mechani·
ca l key
• Press the release button @¢fig. 19.
• Pull the mechanical key @ out of the master
key.
Using the mechan ica l key, you can:
- lock and unlock* the storage compartment on
the passenger's side¢
page 73.
- lock and unlock the vehicle manually
¢page 35.
-lock the front and rear passenger doors me­
chanically¢
page 36.
-unlock the luggage compartment lid manually
¢page 39.
Check light and battery in the master key
Fig. 20 Remote master key: Remov ing the battery holder
Check light in the ma ste r key
The check light®¢ fig. 20 in the master key
provides information about different conditions.
• The check light turns on briefly once when a
button is pressed, and during an "inquiry" by
the conven ience key system.
Open ing and closing
• If the check light does not come on, the battery
is dead and has to be replaced. In addition,
when the battery is dead the
!I ind icator light
appears in the instrument cluster display as
well as the message
Please change the key
battery .
Ma ster key battery replacement
• Remove the mechanical key ¢page 31.
• Press the re lease button @¢ fig. 20 on the
battery holder and at the same time pull the
battery holder out of the master key in the di­
rection of the arrow .
.. Install the new batte ry CR 2032 with the"+"
sign facing down.
.. Push the battery holder carefully into the mas­
ter key .
.. Insta ll the mechanical key .
@ For the sake of the environment
Dispose of dead batteries properly so as not
to pol lute the environment.
(D Tips
The replacement battery must be the same
specification as the original.
Electronic immobilizer
The immobilizer helps to prevent unauthorized
use of your vehicle.
A computer ch ip inside your key automatically
deact ivates the electronic immob ilizer when the
key is inside the vehicle. When you remove the
key from the vehicle, the elect ronic immob ilizer
is automatically activated once again .
& WARNING
-
Always take the key with you when you leave
the vehicle. The key can disarm the electronic
engine immobilizer and permit an unauthor­
i zed person to start the engine and enable op­
eration of the vehicle systems such as power
window or power sunroof leading to serious
personal injury.
31

Sea ts and stor age
@ For the sake of the environment
As a result of the increased wind resistance
created by a roof rack, your vehicle is using
fuel unnecessarily. So remove the roof rack
after using it .
12-volt sockets
Gilt fi.ir: Fahrzeuge 12-volt sockets
Electrical accessories can be connected to every
12-volt socket.
Fig. 78 Sectio n of the trim panel of the luggage compart­
ment: 12-vo lt socket
Fig. 79 Rear center console: 12-volt socke t
• Open the socket cover~ fig. 78 or~ fig. 79 .
• Inser t the plug of the elec trical device into the
socket.
There is an additional 12 volt socke t in the front
center console~
page 73, fig . 80.
The 12 volt sockets can be used for electrical ac ·
cessories . T he power input must not exceed 120
watts .
Before you purchase any accessories, always read
and follow the informat ion in~
page 283, Addi·
tional accessories and parts replacement.
72
A WARNING
The sockets and the electrical accessories con·
nected to them operate only when the igni­
tion is switched on . Incorrect usage can lead
to se rious injuries or burns . To reduce the risk
of injuries, never leave children unattended in
the vehicle with the vehicle key.
(D Note
To avoid damagi ng the socket, on ly use plugs
that fit p roperly.
- Never connect equipment that generates
electrical current, such as a solar panel or
battery charger, to the 12 vo lt socket. This
cou ld damage the vehicle's elec trical sys­
tem.
- The 12 volt socket should o nly be used for a
short period of t ime as a powe r sour ce for
electrical equipment . Please use the electri­
cal sockets in the vehicle when connect ing
equipment for longer per iods .
@ Tips
When the engine is off and accessories are
still p lugged in and are on, the veh icle battery
can still be drained .

(D Tips
If the weight-sensing mat in the front passen­
ger seat detects an empty seat, the front air­
bag on the passenger side will be turned off,
and the
P ASS ENGER AI R BA G OFF light will
stay on.
Repair , care and disposal of the airbags
Parts of the a irbag system are installed at many
d ifferent p laces on your Aud i. Installing , remov­
ing, servic ing or repa iring a part in an area of the
vehicle can damage a part of an airbag system
and p revent that system from working properly
in a co llision.
There are some important things you have to
know to make su re that the effectiveness of the
system w ill not be impaired and that discarded
components do not cause injury or pollute the
environm ent .
A WARNING
Improper care, serv icing and repa ir proce­
dures can increase the risk of personal injury
and death by preventing an airbag from de­
ploying when needed or deploying an airbag
unexpectedly:
-
- Never cover, obstruct, or change the steer ­
ing wheel horn pad or a irbag cover or the in­
strument panel or mod ify them in any way .
- Never attach any objects such as cup holders or telephone mountings to the surfaces cov­
er ing the airbag units.
- For cleaning the horn pad or instrument
pane l, use on ly a soft, dry cloth or one mois­
tened with plain water. Solvents or cleaners cou ld damage the a irbag cover or change
the stiffness or strength of the material so
that the airbag cannot dep loy and protect
properly.
- Never repair, adjust, or change any parts of
the airbag system.
- All work on the steering wheel, instr ument
pane l, front seats or electrical system (in­
cluding the installation of audio equipment,
cellu lar telephones and CB radios, etc.)
must be performed by a qualified technician
Airb ag sys tem
who has the training and special equ ipment
necessary.
- For any wo rk on the airbag system, we
strong ly recommend that you see your au­
thorized Audi dealer or qualified workshop .
- Never modify the front bumper or parts of
the vehicle body.
- Always make sure that the side a irbag can
inflate without interference:
- Never install seat covers or replacement
upholstery ove r the front seatbacks that
have not been specifica lly approved by
Audi .
- Never use addi tional seat c ushions that
cove r the areas where the side airbags in­
flate.
- Damage to the orig inal seat cove rs or to
the seam in the area of the s ide airbag
module must a lways be repaired immedi­
ate ly by an authorized Aud i dealer.
- The airbag system can be activated only
once . A fter an airbag has inflated, it must
be replaced by an authorized Audi dealer or
qualified technic ian who has the technical
information, t raining and spec ial equ ipment
necessary.
- The airbag system can be deployed only
once . After an airbag has been deployed, it
must be replaced with new rep lacement
parts des igned and approved especially for
your Aud i model version. Replacement of
comp lete airbag systems or airbag compo­
nents must be performed by qualified work­
shops only. Ma ke sure that any airbag serv­
ice act ion is en tered in your Aud i Wa rranty
& 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 pyrotechnic circ uit
interrupter.
- Wo rk on the pyrotechnic c ircuit inte rrupt­
er must on ly be performed by a qua lified
dealer -risk of an acc ident!
- If the vehicle or the circuit interr upter is
scrapped, all applicable safe ty p recau tions
mus t be followed.
159

Driving and th e en vironm ent
pollutants in the exha ust gas before they are re ­
leased into the atmosphere.
The exclusive use of unleaded fue l is critica lly im­
portant for the l ife of the catalytic converter and
proper functioning of the engine.
A WARNING
T he temperature of the exha ust system is
high, both when driving and after stopping
the engine.
-
- Never touch the exhaust tail pipes once they
have become hot. This could result in burns.
- Do not park or operate the vehicle in areas
where the hot exha ust system may come in
contact with dry grass, brush, fue l spill or
other mater ial which can cause a fire.
- Do not apply additional undercoating or rustproofing on or near the exhaust mani­
fold, exhaust p ipes, catalytic converter or
heat sh ields. During dr iv ing, the substance
used fo r undercoating could overheat and
ca use a fire.
(D Note
- Be aware that just one tank filling with
le aded fuel will already ser iously degrade
the performance of the catalytic co nverter .
- Do not exceed the correct eng ine oil level
<=;> page 225.
-Do not drive until the fuel tank becomes
complete ly empty. The engine could mis­
fire. Unburned fuel could also get into the
exhaust system and this cou ld cause the
cataly tic converte r to overheat.
- Do not sw itch off the ignition while the veh i­
cle is moving.
- Do not continue to operate your vehicle un­
der these cond it ions, as otherwise fue l can
r each the catalyti c converte r. This cou ld re­
su lt in overheating of the conve rter, req uir­
i ng its replacement.
- T o assure efficient oper ation of the Emis­
s ion Control Sys tem:
- Have your veh icle maintained properly and
in accordance with the service recommen­
dations in your Warranty
& Maintenance
book let .
198
-Lack of proper ma intenance as well as im ­
proper use of the vehicle wi ll impair the
funct ion o f the emission control system
and could lead to damage.
@ For the sake of the environment
Even when the Emiss ion Control System is op ­
erating properly, the exhaust gas can have a
su lfu r-li ke exhaust gas sme ll under some op­
erating states. Th is depends on the sulfur
content of the fuel being used. Us ing a d iffer­
ent brand of fuel may help, or fi lling the tank
with lead-free super g rade gasoline.
Diesel particulate filter
App lies to: vehicles with diese l engine
The diesel particulate filter filters nearly all of
the soot part icles out of the exhaus t. The filte r
clea ns itself automat ica lly unde r no rma l dr iv ing
cond it ions. If the fil ter canno t clean i tself (fo r ex­
amp le, because yo u are on ly driving short distan­
ces), the filter becomes clogged with soot and
the
II symbol for the diese l particu late filter il­
l uminates
¢ page 20.
A WARNING
- Do not park your vehicle over flammable
materials such as grass or leaves because
the high temperature of the diesel particu­
la te filte r could sta rt a fi re.
-
- Do not apply an underbody protectant in the
exhaust system area or a fire could start.
Shutting down vehicle
If you would like your vehicle to remain inopera­
tive for a longer period of time, contact an Audi
or other spec ia lized dealer . They can adv ise you
o n necessary p recautions e .g. corros ion preven­
tion, ma intenance and storage . Pay attention to
additional informat ion concer ning t he battery.
Refer to
<::;> page 2 31.

Check ing and F illing
warm water and baking soda to neutralize
the acid.
CD Note
Never use a fast charger as a booster to start
the engine . This will serious ly damage sensi­
tive electronic components, such as control
units, relays, radio, etc., as well as the battery
charger.
Battery replacement
T he new battery must have the same specifica­
t ions and dimensions as the original equipmen t
bat tery.
Int elli g ent en ergy managem ent in your vehicle is
responsible for distributing the electrical energy
throughout your vehicle
r=> page 195. The intelli­
gent energy management system will keep the
engine battery charged better than veh icles w ith­
out this system . To make sure the addit ional
e lectrical energy is avai lab le once again after you
have changed the battery, we recommend that
you install batteries of the same type and manu­ facture on ly (the same as those installed at the
time your vehicle was delivered). Specifications
are listed on the battery housing. Your author­
i z ed dealer must code the battery in the energy
management system to enable you to use the en­
ergy management functions correctly after re ­
placing the battery .
The new battery must have the same capacity,
voltage (12 volts) , amperage, construction and
plug sealing .
When installing the battery, make sure the igni­
tion and all electrical consumers are sw itched
off.
CD Note
- Make sure the ventilation hose on the s ide
of the battery is connected, otherw ise
fumes or battery ac id can leak out.
- Vehicles with the Start-Stop-System* are equipped with a special cycle-proof AGM battery . Installing a d ifferent type of bat­
tery can cause problems in the vehicle elec -
234
trical system. When replacing the vehicle
battery, always install one with the same
specifications as the original battery .
- Battery mounts and clamps m ust always be
secured correctly.
- Read and follow the warnings under
¢ page 231, Working on the battery before
performing any work on the battery .
@ For the sake of the environment
Because of the p roblem of proper disposal of
a battery, we recommend your authorized
A udi dealer change the battery for you . Bat­
teries contain sulfur ic acid and lead and must
a lways be disposed of properly in compliance
with all environmental regulations . Disposing
of veh icle batteries improperly is very danger­
ous to the environment .
Windshield washer
system
Fig. 204 En gin e compa rt ment: washer fluid rese rvoir cap
The w indshield washer fluid reservo ir Q conta ins
the cleaning solution for the w indshield and the
headlight washe r system ¢
fig. 204, ¢ page 222.
The reservoir capacity is found in
r=> page 2 78 .
To reduce the risk of lime scale depos its on the
spray nozzles, use clean water with low amounts
of calcium. Always add w indow cleaner to the wa­
ter . When the outside temperat ures are cold , an
anti-freez ing agent shou ld be added to the water
so that it does not freeze. ..,.

Jumper cables . . . . . . . . . . . . . . . . . . . . . . . . 272
K
Key
Battery replacement master key . . . . . . . . .
31
Key not recognized . . . . . . . . . . . . . . . . . . . 83
Key replacement . . . . . . . . . . . . . . . . . . . . . 30
Mechanical key . . . . . . . . . . . . . . . . . . . . . . . 31
Kick-down (automatic transmission) . . . . . . 115
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . . 160
Description . . . . . . . . . . . . . . . . . . . . . . . . . 160
How they work . . . . . . . . . . . . . . . . . . . . . . 161
Important safety instructions . . . . . . . . . . 162
L
Lane Change Assistant
refer to Side ass ist . . . . . . . . . . . . . . . . . . . 102
LATCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Description . . . . . . . . . . . . . . . . . . . . . . . . . 181
Guidance fixtures for lower anchorages . . 182
Install ing a child restraint . . . . . . . . . . . . . 183
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Mounting and releasing the anchorage
hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
183
Leather cleaning/protection . . . . . . . . . . . . 209
Leaving hom e . . . . . . . . . . . . . . . . . . . . . . . . . 48
Lifting jack . . . . . . . . . . . . . . . . . . . . . . 261, 262
Light
Ambience lighting . . . . . . . . . . . . . . . . . . . .
50
Coming/Leaving home . . . . . . . . . . . . . . . . . 48
Daytime running lights . . . . . . . . . . . . . . . . 46
Emergency flashers . . . . . . . . . . . . . . . . . . . 47
H eadlight range control . . . . . . . . . . . . . . . 46
High beam . . . . . . . . . . . . . . . . . . . . . . . . . . 48
H igh beam assist . . . . . . . . . . . . . . . . . . . . . 49
Interior/r eading lights . . . . . . . . . . . . . . . . 50
Low beam . ................... ..... .. 46
Rear fog lights . . . . . . . . . . . . . . . . . . . . . . . 46
Side marker lights . . . . . . . . . . . . . . . . . . . . 46
Turn signals . . . . . . . . . . . . . . . . . . . . . . . . . 48
Light/rain sensor
Headlig hts . . . . . . . . . . . . . . . . . . . . . . . . . .
46
Intermittent (windshield wipers) . . . . . . . . 54
Sensor defective . . . . . . . . . . . . . . . . . . . . . . 22
Index
Lighting
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Loading the roof rack . . . . . . . . . . . . . . . . . . . 71
Locking
Luggage compartment lid . . . . . . . . . . . . . .
36
Power locking switch . . . . . . . . . . . . . . . . . . 35
Remote control . . . . . . . . . . . . . . . . . . . . . . 33
Using the key . . . . . . . . . . . . . . . . . . . . . . . . 35
Low beams . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Luggage compartment
Luggage compartment net . . . . . . . . . . . . .
68
Pass-through with ski sack . . . . . . . . . . . . . 69
Storing cargo cor rectly . . . . . . . . . . . . . . . 135
Stowing luggage . . . . . . . . . . . . . . . . . . . . 135
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Luggage compartment lid
Automatic operation . . . . . . . . . . . . . . . . . .
37
Emergency release . . . . . . . . . . . . . . . . . . . . 39
Movement-activated opening . . . . . . . . . . . 39
Opening and closing . . . . . . . . . . . . . . . . . . 36
Lumbar support
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . .
60
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
M
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 281
Malfunction Ind icator Lamp (MIL) . . . . . 20, 28
Massage function
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . .
60
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Reclining rear seat . . . . . . . . . . . . . . . . . . . . 63
Matte finish paint cleaning . . . . . . . . . . . . . 206
Mechan ica l key . . . . . . . . . . . . . . . . . . . . . . . . 31
Memory function . . . . . . . . . . . . . . . . . . . . . . 65
Mirrors
Adjusting the exterior mirrors . . . . . . . . . . .
51
Compass.. .. .. .. .. ............... .. . 56
dimming .. .... .. ................. .. . 52
Vanity mirrors . . . . . . . . . . . . . . . . . . . . 53, 54
Monitoring the Advanced Airbag System . . 156
Multifunction steering wheel . . . . . . . . . . . . . 24
N
Natural leather
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . .
209
291