2008 AUDI S6 battery replacement

Opening and closing
Vehicle within range of the key
If the vehicle is within range of the key, the check light comes on
briefly once when a button is pressed .
Vehicle outside the range of the key
If the vehicle is outside the range of the key, the check light comes
on briefly once and then shows the status of the vehicle door locks:
• If the light is flashing quickly , the vehicle is not locked .
• If the light is flashing slowly, the vehicle is locked .
State of master key battery
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 symbol
appears in the instrument cluster display as well as the message:
Please replace master key battery
Battery replacement ~ page 50.
[ i J Tips
Please note that the current state of the vehicle door locks can only
be recalled with the master key that was last used to lock the
vehicle . It is possible that a different state is shown for the door
locks on the other master key which is not the same as that of the
vehicle .•
Master key battery replacement
Each master key contains a battery housed under the
cover.
Fig . 32 Master key :
opening the cover
We recommend having the battery changed by an autho­
rized dealership. However, if you w ish to replace the dead
battery yourself, proceed as follows:
- Pry apart the base~ fig. 32 @and the
cover @carefully
with a coin.
- Remove the cover (arrow).
- Remove the dead battery from the cover.
- Install the new battery. Please make certain that the"+"
sign on the battery faces down. Correct polarity is shown
on the cover.
- Place the cover with the new battery on the key base and
press both parts together.
ci> For the sake of the environment
Dispose of dead batteries properly so as not to pollute the environ -
ment . _,,,

[ i] 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 chip inside your key automatically deactivates the elec ­
tronic immobilizer when you insert the key in the ignition lock, or on
vehicles with Advanced Key *, when the key is inside the vehicle.
When you remove the key from the ignition lock, or on vehicles with
Advanced Key, when you remove the key from the vehicle, the elec ­
tronic immobilizer is automatically activated once again .
If an unauthorized key was used , SAFE is displayed continuously in
the odometer display field.
& WARNING
Always take the key with you when you leave the vehicle. The key
can disarm the electronic engine immobilizer and permit an unau­
thorized person to start the engine and enable operation of the
vehicle systems such as power window or power sunroof* leading
to serious personal injury.
[ i] Tips
• Your engine can only be started using the factory -equipped key.
• You may no t be able to start your vehicle if an ignition key of a
different vehicle make is also located on your set of keys. •
Controls and equip ­
ment
Opening and closing
Valet key function
The valet key function prevents unauthorized persons
from opening the glove comportment or rear lid.
•
Fig . 33 Center
console: button for
valet key function
Activating and deactivating the function
Insert the master key into the ignition lock and switch on
the ignition.
Press the [VALET) button~ fig. 33 to activate/ deactivate
the function as desired. The indicator light in the button
illuminates when the function is active.
- Remove the master key from the ignition lock.
Hand over only the
valet key~ page 48, fig. 29 to the
person who will take charge of the vehicle.
When the function is switched on, the buttons for opening the rear
lid and glove compartment have no function . However, please note
the following exceptions:
Exceptions
If the ignition has been switched on using the master key, you can
still open the glove compartment .
As long as the ignition is switched off, you can still open the rear lid
using the rear lid button on the master key
.c::5. The same holds true .,,
I • •

• ..__S_ e_a _ t_ s_ a_ n_ d_ s_t _o _r_ a-' g==- e ________________________________________________ _
Before you purchase any accessories, always read and follow the
inf orma tion in
=> page 368, "Addi tional acce sso ries and parts
replacement".
& WARNING
Improper use of the cigarette lighter can cause ser ious injury or
start a fire .
• Be careful when using the cigarette lighter . If you do not pay
attention to what you are doing when you are u sing the cigarette
lighter you can burn yourself .
• The cigarette lighter and soc ket remain fu nctional even if the
ignition is sw itched off or the ignition key is removed . Never leave
c hildren in side the vehicle without supervision.
0 Note
To avoid damaging the socket, on ly use p lugs that fit pro perly .
[ i ] Tips
When the engine is o ff an d accessories are st ill plugged in and are
on, the vehicle battery can stil l be dra ined. •
Outlet
The ou tlet in the f ront an d re ar cen ter console m ay be
u sed fo r 12-v olt ap pliances.
- Fo ld th e cov er fo r th e o utlet do wn.
Fig. 103 Center
c o n sole , front : 12 -volt
outlet
Re ar ce nter console: remove the 12 V cove r from t he
out le t.
P lug in appliance to be used .
The outlet may be used for 1 2-vo lt appliances with maximum
consump tion o f up to 100 watts, such as a flash l ight, small vacu um
cleaner, etc.
Befo re yo u pu rchase any accessories, al ways read and f ollow t he
information in=>
page 368, "Additional accessories and parts
r eplacement".
& WARNING
The outlet plus any applian ces plugged into it remain functional
even if the ignition is swit ched off or the ignition key is removed .
Never leave children inside the vehicle without supervision. .,_

__________________________________________________ A_ i_ r _b _a...; g::- s_ y=--- s_t _e _m __ lll
& W ARNING (continued )
• Always make sure that the side airbag can inflate without inter­
ference :
- Never install seat covers or replacement upholstery over the
front seatbacks that have not been specifically approved by
Audi.
- Never use additional seat cushions that cover the areas
where the side airbags inflate.
- Damage to the or iginal seat covers or to the seam in the area
of the side airbag module must always be repaired immedi ­
ately by an authorized Audi dealer.
• The airbag system can be activated only once. After an airbag
has inf lated , it must be replaced by an authorized Audi dealer or
qualified technician who has the technical information , training
and special equipment necessary .
• The airbag system can be deployed only once . After an airbag
has been deployed, it must be replaced with new replacement
parts designed and approved especially for your Audi model
version. Replacement of complete airbag systems or airbag
components must be performed by qualified workshops only .
Make sure that any airbag service action is entered in you r Audi
Maintenance
& Warranty booklet under AIRBAG REPLACEMENT
RECORD .
• In accidents when an airbag is deployed , the vehicle battery
separates the alternator and the starter from the vehicle electrical
system for safety reasons with a pyrotechnic circuit interrupter.
-Work on the pyrotechnic circuit interrupter must only be
performed by a qualified dealer -risk of an accident!
- If the vehi cle or the circuit interrupter is scrapped, all appli ­
c able safety precautions must be followed . •
Controls and equip­ ment Safety first
Vehicle operation
Other things that can affect Advanced Airbag
performance
Changing the veh ic le 's suspen sion system can change the way that
the Adva n ced Air bag Syst em perfor ms in a crash . For e xamp le,
u sing tire -r im co mbinations not ap proved by Audi , lowering the
v ehi cle, c hang ing the s tiff ness of the susp ens ion, inclu d in g t he
springs, s uspension struts, shock absorbers etc. can change the
fo rce s t hat ar e meas ured by t he airbag sens ors and sent t o the e lec­
tronic control unit. Some suspens ion changes can, for example,
i nc rease t he for ce leve ls mea sured by th e sen sors and make th e
airbag system dep loy in crash es in wh ich it wou ld not deploy if the
ch anges had no t been m ade. O th er ki nds of change s may red uce
the force levels measured by t he sensors and prevent t he airba g
fr om d eploying when it shoul d.
T he se nso rs in t he safety b elt b uckle for the driver a nd front
passenger seat te ll the electronic control module if the safety belt is
l a tc h e d or n ot. If t he safet y bel t is bei ng use d, the front ai rbag w ill
dep lo y at a s lightly hig her rate of veh ic le dece leration than
if the
safe ty belt i s not be ing used . The re fo re, in a pa rticu la r colli sion, i t is
poss ible that an airbag will not deploy at a s eating position where
t he safe ty be lt is b ein g us ed b ut will infl ate a t th e po siti on where the
safety belt is not being used. It is important that nothi ng int erfer e
with the safety belt b uckl es so that the sens ors can send the correct
i n formation about safety belt use to the electronic control u nit.
& WARNING
Chang ing the vehicle's suspension includ ing use of unapproved
tire -rim combinations can change Advanced Airbag performance
and increase the risk of serious personal injury in a crash.
• Never install suspension components that do not have the
same performance characteristics as the components originally
installed on your vehicle.
• Never use tire-rim combinations that have not been approved
by Audi. ...
Vehicle care Do-it-yourself service Technical data

Checking and filling Ill
--------------~-
•
-Now remove the clamps for the charging equipment.
- Close the red cover on the positive pole.
- Close the hood
~ page 297.
A discharged battery can freeze at temperatures of only O °C. Allow
a frozen battery to thaw completely before attempting to charge it
~ & .However, we recommend not using a thawed battery again
because the battery casing can be cracked due to ice formation and
can leak battery acid.
Battery charging (Maximum charging rate of 30
amps/14.8 Volt)
When charging at /ow voltages (e.g. with a trickle charger), the
battery cables do not have to be disconnected first. The battery caps
should
not be opened when charging a battery.
I t is not necessary to remove the battery from the luggage compart­
ment.
Fast charging the battery (charging rate above 14.8
Volts)
For technical reasons do not use a battery charger that uses voltage
greater than 14.8 Volts to charge your vehicle's battery.
& WARNING
Charging a battery can be dangerous.
• Always follow the operating instructions provided by the
battery charger manufacturer when charging your battery.
• Never charge a frozen battery. It may explode because of gas
trapped in the ice. Allow a frozen battery to thaw out first.
• Do not reuse batteries which were frozen. The battery housing
may have cracked and weakened when the battery froze .
• Charge the battery in a well ventilated area. Keep away from
open flame or electrical spark. Do not smoke. Hydrogen gas gener­
ated by the battery is explosive.
&_ WARNING (continued)
• To reduce the danger of explosion, never connect or disconnect
charger cables while the charger is operating.
• Battery acid that may spill during charging should be washed
off with a solution of warm water and baking soda to neutralize
the acid.
0 Note
Never use a fast charger as a booster to start the engine. This will
seriously damage 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 specifications and
dimensions as the original equipment battery.
Intelligent energy management in your vehicle is responsible for
distributing the electrical energy throughout your vehicle
~ page 265. The intelligent energy management system will keep
the engine battery charged better then vehicles without this system.
To make sure the additional electrical energy is available once again
after you have changed the battery, we recommend that you install
batteries of the same type and manufacture only (the same as those
installed at the time your vehicle was delivered). Specifications are
listed on the battery housing. Your authorized Audi dealer will then
code the battery management control unit.
If it is not possible to use a battery of this type, the new battery must
have the same capacity, voltage (12 volts), amperage, construction
and plug sealing .
When installing the battery, make sure the ignition and all electrical
consumers are turned off.
~
Vehicle care I t •

________________________________________________ T_ i _r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ ,n
•
ture . For example, the numbers 2207 mean that the tire was
produced in the 22th week of 2007. The other numbers are
marketing codes that may or may not be used by the tire manufac­
turer. This information is used to contact consumers if a tire defect
requires a recall.
Tire ply composition and materials used
The number of plies indicates the number of layers of rubber-coated
fabric in the tire. In general, the greater the number of plies, the
more weight a tire can support . Tire manufacturers also must indi­
cate the materials in the tire, which include steel, nylon, polyester,
and others .
Maximum Load Rating
This number indicates the maximum load in kilograms and pounds
that can be carried by the tire.
Tire quality grading for treadwear, traction, and
temperature resistance
Tread wear, traction and temperature grades~ page 328.
Maximum Permissible Inflation Pressure
This number is the greatest amount of air pressure that should ever
be put in the tire under normal driving conditions.
Replacing tires or rims on vehicles equipped with tire
pressure monitoring system
The wheels on your vehicle are equipped with a sensor which
constantly monitors the air pressure inside the tire, and then trans­
mits this information to the tire pressure monitoring system. If you
are going to replace the wheel rims on your vehicle, make sure the
new rims also have these sensors . The sensors must be compatible
with the tire pressure monitoring system on your vehicle.
If you install rims, which do not have the sensors, or have sensors
which are not compatible, then the tire pressure monitoring system
will not work properly. In this case, the tire pressure monitoring system would not be able to monitor the
tire pressure or warn you
if it is necessary.
• The battery inside of the tire pressure sensor has a limited
service life.
• Always drive with the valve stem caps securely mounted. We
recommend using factory installed valve stem caps. Ask your autho­
rized Audi dealer to replace lost valve stem caps .
The installation of replacement tires with steel cord body plies in
the tire sidewall may cause malfunction of the tire pressure moni­
toring system, and is not recommended (cord material information
in molded on the tire sidewall).
Always check your tire pressure monitoring system indicator after replacing one or more tires on your vehicle. If the tire pressure
monitoring system indicator flashes, or is on, your system is not
working properly. Your replacement tire might be incompatible with
your tire pressure monitoring system, or some component of the
tire pressure monitoring system may be damaged.
& WARNING
• Using incorrect or unmatched tires and/ or wheels or improper
tire and wheel combinations can lead to loss of control, collision
and serious personal injury.
• Always use tires, rims and wheel bolts that meet the specifica­
tions of original factory-installed tires or other combinations that
have been specifically approved by the vehicle manufacturer.
• Tires age even if they are not being used and can fail suddenly,
especially at high speeds. Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speeds.
• Never mount used tires on your vehicle if you are not sure of
their "previous history." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control.
~
Vehicle care I t •

llffl __ A_ l..:,. p _ h_ a_ b_e _t_ic _ a_l _in _ d_e_ x ____________________________________________ _
Brake system . . . . . . . . . . . . . . . . . . . . . . . 306
Anti-lock brake system . . . . . . . . . . . . . 22
Brake fluid . . . . . . . . . . . . . . . . . . . . . . 306
Brake fluid specifications for refill and replacement . . . . . . . . . . . . . . . . . . . 307
Brake pads . . . . . . . . . . . . . . . . . . . . . . 268
Electromechanical parking brake ... 129
General information .............. 261
How does moisture or road salt affect the brakes? ....................... 261
Malfunction ........ ... ...... .... . 32
Warning/indicator lights ........... 23
Worn brake pads symbol . . . . . . . . . . . 37
Break -in period . . . . . . . . . . . . . . . . . . . . . 267
Brake pads . . . . . . . . . . . . . . . . . . . . . . 268
Tires .... ... .. .... .... .......... 267
Bu lbs ... .... .. ... ...... ....... .... 349
Bumper cover Caution when parking near a parking bar -
rier or curb ...... ... .... .... ... 130
C
Ca lifornia Proposition 65 Warning 298
Battery specific . . . . . . . . . . . . . . . . . . 310
Capacities ......................... 363
Car care ................. .... .... .. 278
Interior .......... .... .... ...... . 285
Plastic and vinyl .. .... ........... 282
Weatherstrips ....... ........ .... 283
Care of exterior .... ....... .......... 278
Cargo area
See Loading the luggage compartment ..
199 Cargo net
.... .... ... ........ ...... .. 98
Catalytic converter . ........ .... .... . 268
CD changer . . . . . . . . . . . . . . . . . . . . . . . . 107
Central locking Emergency locking . . . . . . . . . . . . . . . . 57
Changing a flat tire ........ .... ... ... 338
Changing a wheel .... .. ..... .. .. .... 338
Changing engine oi l ....... .... ... ... 302
Chassis Undercoating ... .. .... .... .... ... 284
See also Adaptive Aar Suspension . . . 182
CHECK button . . . . . . . . . . . . . . . . . . . . . . . 16
Checking Engine coolant level .............. 304
Checking tire pressure .. ........... .. 319
Child restraints Danger of using child restraints in the front seat ......... ... .... ...... 214
What types of chi ld restraint anchors are
available? . .... ..... ...... .... .. 247
Where can I get additional information
about child restraints? ...... ... .. 248
Child safety ...... ...... .... ... . 234, 239
Additional information ............ 253
Booster seats ................. ... 242
Convertible chi ld safety seats .. .... 240
Convertible locking retractor ....... 244
Guidance fixtures for lower anchorages
250
Important safety instructions for using
child safety seats .... ...... ... .. 237
Important things to know when driving with children ................... 234 Infant
seats ... .... .... ....... .. . 239
Install ing a child restraint using the
LATCH system .. ...... ..... .. ... 252
Lower anchorages ... .. .... .... ... 249
Mounting and releasing the anchorage
hook . ............ ....... .... .. 253
Older children and safety belts ..... 243
Safety belts and older children ..... 243
Tether anchors .. ...... .... ...... 253
Tether strap ... .... .... ...... .... 254
Which restraint system should my older
chi ld wear? ....... ........... .. 243
Child safety lock
rear doors {power) . .... ........ .... 59
Child safety seats .. .... ...... .... ... 239
Convertible locking retractor .. ..... 244
Danger of using child restraints in the
front seat ...................... 214
How do I properly install a child safety
seat in my vehicle? .... ... .... ... 237
Installing .. .. .. .... .... ... .... ... 244
LATCH system ....... ........ .... 252
Safety instructions ............... 237
Cigarette I ig hter . . . . . . . . . . . . . . . . . . . . 105
Cleaning Alcantara {synthetic suede) . ....... 288
Engine compartment ...... .... ... 289
Fabrics and fabric coverings . ...... 285
Instrument panel ....... ........ .. 286
Interior ........... .... .......... 285
Leather ... .... .................. 287
MMI display .............. .... ... 285
MMI terminal .. .... .... ... .... ... 285
Plastic and vinyl ... .... .... .... ... 282

ffl __ A_l.:,. p _h_ a_ b_e _t _ic _ a_l _in _ d_e _x ____________________________________________ _
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . 70 I
Adap tive Light .... ..... ...... .... . 73
Defective . . . . . . . . . . . . . . . . . . . . . . . . 27
Front fog lights . . . . . . . . . . . . . . . . . . . 72
Headlight range control defective .. . 37
Switching off ..... .... .... ...... .. 70
Switching on ..... .... .... .. . ..... 70
Washer system . . . . . . . . . . . . . . . . . . . 80
Xenon headlights .... ........ .... . 70
Heated outside mirrors . . . . . . . . . . . . . . . 83
Heated sea ts
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Rear ......... .... ....... .. .. ... 115
Heated steering wheel . . . . . . . . . . . . . . . 115
Heated washer jets
Wiper and washer system . . . . . . . . . . 78
Heavy clothing and safety b elts ... .... 205
High beam ........... ... .... ..... 70, 74
Warning /indicator lights ........... 22
High voltage warning label . ..... .. ... 360
Homelink® universal remote control 186
Hood Opening ...... ....... .... .. . .... 296
Re lease lever . . . . . . . . . . . . . . . . . . . . 296
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
How many airbags does my vehicle have? . .
219
How often should I check my tire pr essures?
320 Ignition key
........... ........ .... . 124
Ignition lock ...... .... .... .... .... .. 124
Malfunction .. .... ... .... .... .. 35, 38
Ignition lock positions .......... ..... 124
Immobilizer .. .................. ..... 15
Important things to do before driving .. 193
Improperly worn safety be lts .... ... .. 210
Indicator lights ... ..... .. .... .. ... .. . 17
Airbag system . .......... .... 223, 224
PASSENGER AIR BAG OFF ......... 224
Infant seats .............. ....... ... 239
How do I properly insta ll an infant seat in
my veh icle? .. .... ..... .. .... ... 239
Safety instructions ..... ... .... ... 239
Inside rea r v iew mirror ....... ...... ... 82
Installing child safety seats Safety be lts ...... ............ ... 244
Instrument cluster illumination .... .... 16
Instruments and controls . . . . . . . . . . . . . 13
General illustration ....... .... .... . 11
Interior lights . ... ...... ...... ... .... 75
Rear ............... ... .... .... 75, 76
Inte rmittent wiping
Rain sensor ... ....... .... .... .... 78
J
How sa fe ty be lt tensioners work . . . . . . 210 Jack .... .... .... ... .... .... .... ... 336
Hydroplaning ... .. .. .... .... ... .... 324 Jump er cables .... .... .... .... .... .. 352
Jump-starting . ...... .. . ... ...... ... 351
K
Key .. .... .... ...... .... ... .... .... . 48
Battery replacement . ...... .... ... . 50
Coded settings .. .... ... .... .... .. 110
Convenience opening and closing of windows .... .... ... ... .... ... .. 65
Emergency key . ..... ...... .... .... 48
Key replacement . . . . . . . . . . . . . . . . . . 48
Master key ..... .. . .... .. . .. .. .... 48
Valet key . ........... .... .... ... .. 48
Key coded s ettings
Climate controls .. .... ..... .... .. 110
Key less entry remote control ... ... ..... 49
Kick-down multitronic® ... ... ... ... .. .... ... 163
tiptronic ® ... ..... .... ... ........ 156
L
Lane assist
Activating and deactivating 150
Description ............ .. .. .... .. 150
Instrument cluster indicator light ... 150
MMI settings ... .. .... .... .... .. . 151
Notes on instrument cluster display. 150
LATCH .... .... .... ... .... ..... .. ... 249
Description . ... .... .... .. . ... .... 249
Guidance fixtures for lower anchorages . .
250
Ins talling a child restraint .. ... ... . 252
Location . . . . . . . . . . . . . . . . . . . . . . . . 249
Moun ting and releasing the anchorage
hook ......... ....... .... ...... 253