2015 AUDI S8 key battery

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ABS
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Instruments and warning/indicator lights 13
USA models:
Anti-lock braking system (ABS) defective
q page 19
Canada models:
Anti-lock braking system (ABS)
defective
q page 19
Worn brake pads ¢page 20
Electromechanical parking brake
¢ page 15
Tir e pressure monitoring system
./
¢page 263
Tir e pressure monitoring system
qpage 263
Electronic power control (alter­
native to
1,1 )
qpage 20
Glow plug system
(alternat ive to
[lla}
¢ page 20
Ma lfunction indicator Lamp
(MIL)./
¢ page 20
Diesel particulate filter* clogged
q page 21
Engine speed limitation
q page 21
Engine oil leve l
¢ page 17
Engine oil sensor
¢ page 21
Request to warm engine by driv­
ing
¢ page 21
Battery
q page 16
Ta nk system
q page 21
Windshield washer flu id leve l
q page 22 W
indshield wipers
¢ page22
Remote control key
¢ page83
Remote control key
¢ page83
Battery in remote contro l key
¢ page 32
Defective light bulb warning
¢ page22
F og lights*
¢ page22
Rear fog lights*
¢ page 22
H eadlight range control
¢ page22
adaptive light*
¢ page22
Light-/rain sensor faulty
¢page22
Audi active lane assist*
¢ page 102
Transmission
¢ page 118
Transmission
¢ page 118
E lect ronic steer ing column lock
¢ page 17
Engine start system
¢ page 17
Brake booster
¢ page 18
Electromechanical steering,dy­
namic steering*./
¢ page201
Air suspension *
¢ page 18
Sport different ial*
¢ page23

32 Opening and clo sing
Remov ing the mechanical key
Fig. 19 Remote control master key : removing the me­
chanical key
.. Press the release button@r=>.> fig. 19.
• Pull the mecha nica l 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 c::>
page 75.
-lock and unlock the vehicle manually
<=>page 36.
-lock the front and rear passenger doors me­
chanically
c::> page 37.
- unlock the luggage compartment lid man­
ually
c::> page 40.
Check light and battery in the master
key
Fig. 20 Remote master key: Removing the battery
holder
Check light in the master ke y
The check light@c::> fig. 20 in the master key
prov ides informat ion about d ifferent cond i­
tions.
• The check light turns on briefly once when a
button is pressed, and dur ing an "inquiry"
by the convenience key system. •
If the check light does not come on, the bat ­
tery is dead and has to be replaced. In addi­
tion, when the battery is dead the
!I indi ­
cator light appears in the instrument cluster
display as well as the message
Pl ease
chang e th e ke y b attery .
Ma ster key batter y replacement
• Remove the mechanica l key c::> page 32.
• Press the release button@¢ fig. 20 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 carefu lly into the
maste r key.
• Insta ll the mechanical key .
@ For the sake of the environment
Dis p ose of dead batteries prope rly so as
not to poll ute the environment.
{D Tips
The replacement battery mus t be the
same specification as the o rigina l.
Electronic immobilizer
The immobilizer helps to prevent unauthor­
ized use of your vehicle .
A computer chip ins ide your key automatically
deact ivates the elect ron ic immobilizer when
the key is ins ide the veh icle. When you remove
the key from the vehicle, the elect ron ic immo­
bilizer is au tomatically activa ted once aga in.
& WARNING -
A lways take the key w ith you when you
l eave the vehicle. The key can disarm the
e lectronic engine immobilizer and permit
an una uthorized person to start the engine
and enable operation of the vehicle sys­
tems such as power w indow or power sun-
r oof leading to se rious pe rsonal injury.
~

36 Opening and clo sing
It is not possible to re-open the door for a
brief period direct ly after closing it. This al­
l ows you to ensure that the doors are properly
locked.
I t depends on the se ttings in the MMI wheth­
er the entire vehicle is unlocked or one of the
doors ¢
page 34.
A WARNING
Read and follow a ll WARNINGS c:> & in
General description on page 34.
(D Tips -
If you
r vehicle has been stand ing fo r an ex­
tended period, please note the fo ll ow ing:
- The proximity sensors are deactivated af-
te r a few days to save powe r. Yo u then
have to pull on the door handle once to
unlock the ve hicle and a second time to
open the veh icle.
- To prevent the battery from draining and to preserve your vehicle's ability to start
fo r as long as possib le, the energy man­
age men t sys tem grad ual ly sw itches off
u nn ece ssary conven ience f unct io ns.
It is
p ossi ble tha t you w ill not be able to un­
l ock your ve hicl e using these conven­
i en ce f unct io ns.
- Fo r De clarat ion of Com pliance to Uni ted
St ates FCC an d Indus try C anada regu la­
tions¢
page 293.
Operating locks with the key
In the event of a failure of the power locking
system, the driver's door con be locked and
unlocked at the lock cylinder.
F ig . 2 3 Key tu rns for ope ning and clos ing .
.,. Remove the mechan ica l key i=;, page 32.
.,. Tur n the key to the left to unlock the driver's
door .
.,. Turn the key to the right to lock the driver's
door c:>.&, .
A WARNING
Read and follow all WARNI NGS Q & in
General description on page 34 .
Locking and unlocking the vehicle from
inside
Fig. 24 Dr ive r's door: power lock ing sw it ch
Fig . 25 Rear power lock ing sw itc h
.,. Press the button@ to lock the vehicle c:> .&, .
"' Press the button
63 to unlock the vehicle
Q fig . 24, Q fig . 25 .
If you lock the vehicle using the power locking
switch, p lease note the following:
- You cannot open t he doors or the luggage
compartment lid from the
outside (in­
creased secur ity, for example when you are
stopped at a red light) .
- The diodes in the powe r locking switches il­
luminate when all the doors are closed and
locked .
~

40 Opening and closing
the remote control key is left in the lug­
gage compartment, luggage compart­
ment will automatically unlock itself af ­
ter you lock the vehicle. This prevents
you from unintentionally locking your key in the luggage compartment.
- When the vehicle is locked, the luggage
compartment lid can be unlocked sepa­ rately by pressing the button<=:> on the
master key . When the luggage compart­
ment lid is closed again, it locks auto­
matically.
- If the vehicle battery charge drops be­
low a certain level, you can still open or
close the luggage compartment lid man­ ually, however, you will need to apply
more force to close it.
Luggage compartment with movement­
activated opening
Applies to vehicles: with conven ience key and sensor-con­
trolled luggage compart ment lid
Fig. 31 Rear of ve hicle: foot move men t
Requirements : You must be carrying your ve­
hicle key with you . You must be standing at
the center behind the luggage compartment
lid. The distance to the rear of the vehicle
must be at least 8 inches (20 cm). The igni­
tion must be switched off. Make sure you have
firm footing.
.. Swing your foot forth and back below the
bumper ~
fig. 31. Do not touch the bumper.
Once the system recognizes the movement,
the luggage compartment lid will open .
The luggage compartment lid will only open if
you make the movement as described. Th is
prevents the luggage compartment lid from
opening due to simila r movements such as when you walk between the rear of the vehicle
and your garage door.
General information
In some situations, the function is limited or
temporarily unavailable. This may happen if:
- the luggage compartment lid was just
closed .
- you park close to a hedge and the branches move back and forth under the vehicle for a
long period of time.
-you clean your vehicle, for example with a
pressure washer or in a car wash.
- there is heavy rain .
- the bumper is very dirty, for example after
driving on salted roads.
- there is interference to the radio signal from
the vehicle key, such as from cell phones or remote controls .
Luggage compartment lid emergency
, release
If the central locking system fails, the lug­
gage compartment lid can be opened at the
lock cylinder.
(111)
A UC, ,.
Fig. 32 Lu gga ge compart men t lid: mec ha nic al key in
the lock cylinder
.. Remove the mechanical key~ page 32.
.. Insert the key in the lock cylinder aspic­
tured .
.. Turn the key approximately 45° to the right
~ fig. 32. The luggage compartment lid
opens.
In this position the key cannot be pulled out
of the lock cylinder.

42 Opening and closing
Closing the windows
.,. Pull the switch to the first stop and hold it
until the window reaches the desired posi­
tion .
.,. Pull the switch briefly to the
second stop to
automatically close the window.
Power window switches
@ Driver's door
@ Passenger's door
© Left rear door
@ Right rear door
® Safety button (or two safety buttons in
vehicles w ith power child safety locks
r::!) page 41)
Child safety lock
When the safety button®¢ fig. 35 is press­
ed, the LED in the button lights up. The fol­
lowing features are switched off:
- The power windows in the rear doors,
- The buttons for the power sun shades * in
the side windows,
- The buttons for the power sun shade* in the
rear window,
- Front passenger power seat adjustment*
button.
&_ WARNING
- When you leave your veh icle - even if on­
ly brief ly - always take the ignition key
with you. This applies particularly when children remain in the veh icle. Otherwise
the chi ldren could start the engine or op­
erate electrical equipment (e.g. power
w indows). The power windows are func­
tional until the driver's door or passeng­
er's door has been opened .
- Be careful when closing the windows.
C heck to see that no one is in the way, or
serious injury could result!
- When locking the vehicle from outside,
the vehicle must be unoccupied since the
windows can no longer be opened in an
emergency.
(D Tips
- The driver can lower or raise the power
sun shades* in the s ide windows by using
switches © and @.
- After the ignition has been switched
off,
the windows can sti ll be opened or
closed for about 10 minutes. The power
w indows are not switched off until the
dr iver's door or passenger's door has
been opened .
What to do after a malfunction
The one-touch open and close function must
be reactivated if the battery has been discon­
nected .
.,. Pull and hold the power window switch until
the window is fully closed .
.,. Release the sw itch and then pull it again for
at least one second.
Valet parking
The valet parking feature protects the lug­
gage compartment from unauthorized ac­
cess .
Fig. 36 Valet parking button
With "valet parking" activated , the luggage
compartment lid cannot be opened .
.,. Remove the mechanica l key
¢ page 32.
.,. Open the glove compartment and activate
¢ fig. 36 the "valet parking" feature by
pressing the
j VA LETi button . The indicator
light in the sw itch illuminates .
.,. Close the glove compartment and lock it
w ith the mechanical key . .,.

7 4 Seats and storage
12-volt sockets
Applies to vehicles: 12-volt socke ts
Electrical accessories can be connected to ev­
ery 12-volt socket.
Fig. 78 Section of the trim panel of the luggage com­
partment: 12-volt socket
Fig . 79 Rear center console: 12-volt socket
.. Open the socket cover¢ fig. 78 or¢ fig . 79 .
.. Insert the plug of the electrical device into
the socket .
There is an additional 12 volt socket in the
front center console¢
page 74, fig. 80.
The 12 volt sockets can be used for electrical
accessories. The power input must not exceed
120 watts.
Before you purchase any accessories, always
read and follow the information in
<::> page 292, Additional accessories and parts
replacement.
A WARNING
The sockets and the electrical accessories connected to them operate only 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.
(D Note
To avoid damaging the socket, only use plugs that fit properly .
-Never connect equipment that generates
electrical current, such as a solar panel
or battery charger, to the 12 volt socket.
This could damage the vehicle's electri­
cal system.
- The 12 volt socket should only be used
for a short period of ti me as a power
source for electrical equipment. Please
use the electrical sockets in the vehicle
when connecting equipment for longer periods.
(D Tips
When the engine is off and accessories are
still plugged in and are on, the vehicle bat­
tery can still be drained .
Storage
'(upholder
Fig. 80 Center console: front cupholder
Fig. 81 Section of the rear bench seat: rear cupholder Ill>

Starting the engine if there is a
malfunction
It may not be possible to start the engine un­
der certain circumstances , for example if the
battery in the vehicle key is drained , if inter ­
ference hos affected the key or if there is a
system malfunction.
i :c _ ____ ;&
Fig. 89 Center console/master key : starting the engine
if th ere is a m alfunction
Requirement : The message Key not re cog­
nized. Hold b ack of key against marked area.
See owner's manual.
must appear and the in­
dicator light
II must switch on .
"' Hold the master key vert ica lly in the loca­
tion indicated
y >>) c::> fig. 89.
"' Press the brake pedal i=:> A in Starting the
engine on page 83 .
"'Press the j ~s_T_A_R_T_E_N_G _I_N _E_ S_T_O_P~I button . The
engine will start .
"' Drive to your au thor ized Audi dealer imme­
diately to have the malfunct ion corrected .
(D Tips
You can view the message again by press­
ing the
! START ENGINE STOP I button.
On the road 85
Electromechanical
parking brake
Operation
The electromechanical parking broke replaces
the hand broke.
Fig. 90 Center co nsole: Parking b rake
"' Pull on the switch © i=:> fig. 90 ® to apply
the parking brake. The indicator lights in the
switch and. (USA models)/ . (Cana-
da models) in the instrument cluster illumi­
nate .
"' With the ignition switched on, step on the
brake peda l or the accelerator pedal and
press the switch <®lat the same time to re­
lease the parking brake . The indicator lights
in the switch and. (USA mode ls)/ . (Can­
ada models) in the instrument cluster go
out .
Your vehicle is equipped with an electrome­
chanical parking brake. The parking brake is
designed to prevent the vehicle from rolling unintentionally and replaces the hand brake.
In addit ion to the normal functions of a tradi­
tiona l hand brake, the electromechanical
parking brake provides vario us convenience
and safety functions .
When starting from rest
-The integral start ing assist helps you when
driving by automatically re leasing the park­
i ng brake
i=:> page 86, Starting from rest.
- When start ing on inclines , the starting as-
sist prevents the vehicle from unintentiona l-
ly rolling back. The braking force of the
parking brake is not re leased until sufficient
111>

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@ Tips
-Side assist is not active whi le you are
making the adjustment.
- Your settings are automatica lly stored
and assigned to the remote control key
being used.
Driver messages
Applies to vehicles: with side assist
If side ass ist switches off by itself, the LED in
the button turns off and a message will ap­
pear in the instrument cluster d isplay:
Audi side assist: Currently unavailable . No
sensor vision
The radar sensors' vision is affected. Do not
cover the area in front of the sensors with bike
wheels, stickers, dirt or other objects. Clean
the area in front of the sensors, if necessary
c>page 105, fig . 114.
Audi side assist: Currently unavailable
Side assist cannot be swi tched on temporarily
because there is a malfunction (for example,
the battery charge leve l may be too low) .
Audi side assist: System fault!
The system cannot guarantee that it will de ­
tect vehicles correctly and it is switched off .
The senso rs have been displaced or are faulty.
Ha ve the sys tem checked by an authorized
Aud i dealer o r autho rized Aud i Service Fac ilit y
soon.
Audi side assist: Unavailable when towing.
Side assist sw itches off automatically when a
factory- installed trailer hitch is connected to
the electrical connector on the trailer. There is
no guarantee the system will switc h off when
using a retrofitted trailer hitch. Do not use
side assist when towing a trailer .
Audi side assist 107