2015 AUDI A8 battery replacement

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.
~

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>

.... N .... N
0 J:
'SI: .... \!) 1.1"1
.... 1.1"1 ,....,
Fa st charging the b att ery (charging rate
abo ve 14.8 Vo lt s)
Fo r technical reasons do not use a batt ery
charger that uses vo ltage g reater than 14.8
Volts to charge your vehicle's battery.
A WARNING
-
Charging a battery can be dangerous.
- Always follow the operating instructions
provided by the battery charger manu­
facturer when charging your battery.
- Never charge a fro zen battery. It may ex­
plode because of gas trapped in the ice.
Allow a frozen battery to thaw out first .
- Do not reuse batteries which were fro­
zen. 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 elec­
trical spark . Do not smoke . Hydrogen gas
gene rated by the battery is exp losive.
- To reduce the danger of explosion , never
co nnect or disconnect cha rger cables
wh ile the charger is operating.
- Fast charg ing a battery is dangerous and
should only be attempted by a compe­
t ent technicia n w ith the proper eq uip­
ment.
- Battery a cid that may spill d uring charg­
ing should be washed off wit h a solution
of warm wa ter and ba king soda to neu ­
tralize the acid .
CD Note
Never use a fast charge r as a booster to
s tart the engine. This will se rio usly d am­
age sensitive elect ronic components, such
as control units, relays, radio, etc., as we ll
as the battery charger .
Checking and fillin g
Battery replacement
The new battery must have the same specifi­
cations and dimensions as the original equip­
ment battery.
In telligen t energy managemen t in your vehi­
cle is responsible for distributing the electri ­
cal ene rgy throughout your vehicle
¢ page 202. The intelligent energy manage­
ment system will keep the engine battery
c h arged better than vehicles without this sys ­
tem. To make sure the additional electrica l en ­
ergy is avai lab le once again afte r yo u have
changed the battery, we recommend that you
insta ll batteries of the same type and m anu­
facture only (the same as those installed at
the time your ve hicle was delivered) . Specif i­
cat ions are listed on the battery housing . Your
authorized dea le r must code the battery in
the energy management system to enab le you
to use the ene rgy manageme nt func tions cor ­
re ct ly afte r replacing the battery.
The new battery must have the same capacity,
vo ltage
( 1 2 volts), amperage, const ruction
and plug seal ing .
When installing the battery, make sure the ig­ nition and a ll elect rical consume rs are switch­
ed off .
CD Note
- Make sure the ventilation hose on the
side of the battery is connected, other­
w ise fumes or battery a cid ca n leak out .
- Veh icles with the Start-Stop-System* are
e quipped with a spec ial cycle-p roof AGM
battery. Install ing a d iffe rent type of
ba ttery c an cause problems in the vehi ­
cle e lectrical system. Whe n replacing the
vehicle battery, always install one w ith
the same specifications as the origina l
battery.
- Battery mounts and clamps must a lways
be sec ured correct ly .
- Read and fo llow the wa rnings under
¢ page 241, Working on the battery be-
fore per forming any work on the battery . ..,_
243
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,....,
N ,....,
N
0 J:
'SI: ,...., \!) 1.1"1 ,...., 1.1"1 ,....,
Ins ta lli ng the uppe r tether strap on the
a nchorage ... ..... ..... ... .. .. .. ...
192
Inst ruments
Adj usting the lighting ..... .. .. .. .. ..
5 1
Instruments and controls
General i llustration ........... ... .... 8
Instrument cluster ............. .... .
10
Interior lighting
Ambience lighting . . . . . . . . . . . . . . . . . .
50
Front and rear ........... .... .. .... 50
Intermittent (windshield wipe rs) . . . . . . . 53
l
Ja ck .... .. .. .. ............... .. .. . 267
Jump -starting ................ .. .... 281
Ju mpe r cables . ..... .... ... .. .. .. .. . 282
K
Key ... .. .. .. .. ... .. ..... ... .. .. .... 3 1
Battery rep lacement master key ... .. .. 32
Emergency key . . . . . . . . . . . . . . . . . . . . . 3 1
Key not recognized . . . . . . . . . . . . . . . . . . 85
K ey replacement . . . . . . . . . . . . . . . . . . . 31
Master key . . . . . . . . . . . . . . . . . . . . . . . .
31
Mechanical key .............. .... ... 32
Valet key . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1
Kick-down (a utomat ic transm ission) . . . . 117
Knee airbags . .... ......... .... .. .. . 166
D escr ipt ion ... .. .. .. .... ... .. .... . 166
How t hey work . ... .... ... .. .. .. .. . 167
Important safety instructions ... .. .. . 168
L
Lane assist 101
L ane Change Ass istant
refer to S ide ass ist ..... .... ... ... .. 104
LATCH .... .. .. ............. .. .. ...
187
Descr ipt ion . ............. .... .. ... 188
Guidance fixtures for lower anchorages 189
Install ing a child restraint ....... .... 190
Locat io n . .. .. ........ ... .. ... ... . 188
M ounting and releasing the ancho rage
h ook .... .. ................. .. ...
190
Leather cleaning/protection ........ .. 217
Leaving home . ... ...... ... .. .. .. .... 48
Inde x 301
Lifting jack . . . . . . . . . . . . . . . . . . . 2 72, 2 73
Lifting vehicle ...... ................ 285
Light
Amb ience lig hting ............. .... .
50
Coming/Leav ing home . .. .... ... .. .. . 48
Daytime runn ing lights .. ...... .... .. 46
Emergency flashe rs ............... .. 47
E xte rior lig hti ng .. .... ........... .. . 46
Head ligh t ra nge control ............ . 46
Hig h beam .. .. .. .. . ............... 48
Hig h beam assist ... . .. .. ..... ... .. . 49
low beam ....... .. . .. .. ..... ... .. . 46
Rear fog lights ...... .. .. ..... ... .. . 46
S ide mar ker lights ............. .. .. . 46
Turn signals . .. .. ................. . 48
Light/ rain senso r
Head lights . ....... . .. .. ..... ... .. . 46
Intermittent (windshie ld w ipers) ... .. .
53
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Loading the roof rack ............ .. .. . 73
Locking
luggage compartment lid . .. ... ... .. .
37
Power loc king switch ... ..... ... .... . 36
Remote con tro l ... ................. 35
U sing the key .. .. .... ........... .. . 36
Low beams ........ ...... ........... 46
Lowe r universal anchorages (Canada)
187
Luggage compartment
L uggage compartment ne t . . . . . . . . . . .
70
Pass- through w ith sk i sack ........ .. . 71
Stow ing luggage ... . ... ...... ... .. 139
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . . . 70
Luggage compartment lid
A ut omat ic operation . . . . . . . . . . . . . . . .
38
Emergency re le a se ............. .. .. . 40
Movement -act ivated open ing . ... .. .. . 40
Opening and closing . .. ..... ... .. .. .
37
Lumbar support
Fron t seats . . . . . . . . . . . . . . . . . . . . . . . . 6 0
Re ar seats . .. .. .. .... ........... .. .
61
M
Maintenan ce .. .. ...... ........... .. 2 90
Malfunction Ind icator Lamp (MIL) . . 20, 29
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