2018 AUDI A8 change key battery

lL t:0 ....
"' ......
"' .... 0 0 :c ' could start the engine or operate electrical
equipment such as power windows.
(D Tips
-The operation of the remote control key can
be temporarily disrupted by interference
from transmitters in the vicinity of the vehi­
cle work ing in the same frequency range
(such as a cell phone or radio equipment).
-Using the mechanical key, you can:
- Locking/unlocking the glove compartment
,;:;,page 64.
-Manually lock/unlock the vehicle
,;:;,page 32.
-Mechanically lock the doors c:> page 32.
-Unlock the luggage compartment lid us-
ing the emergency release r;;:;, page 36.
-For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see
r;;:;,page 339.
(D Tips
Removing the integrated mechanical key
Fig. 21 Remote control master key : remov ing t he mechani­
cal key
.,. Press the release button@ r;;:;, fig. 21.
.,. Pull the mechanica l key @ out of the remote
control key.
Opening and closing
LED and battery in the remote control key
Fig. 22 Remote control key: removing the battery holder
LED on the remote control key
The LED @ informs you about the function of the
remote control key.
.. If you press a button briefly, the LED blinks
once.
.. If the LED does not blink, the remote contro l
key battery is dead. The
ml indicator light and
the message
Please change key battery ap­
pear . Replace the battery in the remote control
key .
Replacing the remote control key battery
.. Remove the mechanical key r;;:;, page 29 .
.. Press the release button ® on the battery
holder and pull the battery holder out of the
re ­
mote control key in the d irect ion of the arrow
at the same time .
.,. Insert the new battery with the"+" symbol fac­
ing down .
.,. Slide the battery holder carefully into the re­
mote contro l key .
.. Insert the mechanical key.
@ For the sake of the environment
Discharged batteries must be disposed of us­
ing methods that wi ll not harm the environ­
ment. Do not d ispose of them in household
trash.
{!) Tips
The replacement battery must meet the same
spec ificat ions as the origina l battery in the re­
mote control key .
29

Assistance systems
Switching on/off
Applies to: ve hicles w ith Aud i side ass ist
F ig. 122 Driver's door : side ass ist butto n
• Press the button to switch the system on and
off
c> .&, in General information on page 107 .
The LED in the button turns on when side assist
is sw itched on.
Setting the display brightness
App lies to: ve hicles with Aud i side ass is t
The display brightness can be adjusted in the In ­
fotainment system .
• Select : the ICARI function button > Car systems
control button > Driver assistance > Audi side
assist .
The display brightness adjusts automatically to
the br ightness of the surroundings, both in the
information and in the warning stage . In very
dark or very br ight surroundings, the automat ic
adj ustment will set the disp lay to the minim um
or maximum level. In such cases , you may notic e
no change when adjust ing the brightness, or the
change may only be noticeable once the sur­
ro undings change .
Adj ust the brightness to a level where the disp lay
i n the information stage will no t disrupt your
view ahead.
If you change the brightness, the dis­
p lay in the exter ior mirror wi ll briefly show the
brightness lev el in the information stage . T he
brightness of the warning stage is linked to the
brightness in the information stage and is adjust­
ed along with the information stage.
108
@ Tips
-Side assist is not active while you are mak­
ing the adjustment .
- Your settings are automat ica lly stored and
assigned to the remote control key being
used .
Messages
Applies to : vehicles wi th Audi side ass ist
If side assist switches off by itself, the LED in the
button turns off and a message will appear in the
i nstrument cluster display:
Audi side assist: Currently unavailable. No
sensor vision
The radar sensor vision is impaired . Do not cover
the area in front of the sensors with bike wheels,
stickers, dirt or ot her objects . Clean the area in
front of the sensors, if
necessary ¢ page 106,
fig. 121 .
Audi side assist: Currently unavailable
Side assist cannot be switched on at this time be­
cause there is a malfunction (for example, the
battery charge level may be too low).
Audi side assist: System fault!
The system cannot guarantee that it will detect
vehicles correctly and it has switched off. The
sensors have been moved or are faulty . Have the
system checked by an authorized Audi dealer or
autho rized Aud i Serv ice Facility soon.
Audi side assist: Unavailable when towing
Side assist switches off automatically when a fac­
tory- installed trailer hitch is connected to the
electrical connector on the trailer. There is no
guarantee the system will switch off when using
a retrofitted trailer hitch. Do not use side ass ist
when towing a trailer.

Rear Seat Ent ertainm ent
right and change the batteries as labeled in the
battery compartm ent . Then attach the cover
back on to the left earpiece
(L).
You can ident ify t he charge status of the battery
q table on page 200 based on the blinking
speed of the LED in the charging cable conn ec­
tion
CD q fig. 209.
Blinking fre- Charge status
quency
Blinking The batteries are cha rging.
Rema ins on The batte ries are charged .
Blinking An error occurred while charg-
quickly ing.
A WARNING
- Do not use damaged rechargeable batteries .
T his increases the r isk of an explos ion.
- The headphones can become warm when
the batteries a re charg ing and increase the
risk of injury .
- Do not charge standard batteries with the
charg ing cable. This increases t he risk of an
exp losion .
- Be careful when using the c igarette lighter .
I n attentive or unsupe rvised use of the c iga­
rette lighte r can cause burns.
- T he ciga rette lighter/sockets and any elec­
t rical accessor ies connected to t hem func­
t ion only whe n the ign ition is sw itched on.
U sing the ciga rette lighter/sockets o r elec ­
trical accessories incorrect ly can lead to se ­
rious injuries or cause a fire. To reduce the
risk of in juries, never leave children unat­
tended in the vehicle with the vehicle key.
@ Note
- Do not charge the batteries in the wireless headphones when the engine is not run ­
ning . This will dra in the vehicle battery .
- For wireless headphones, on ly use batteries
that are approved for that type of device,
for example NiMH batteries with a mini­
mum capacity of 550 mAh in AAA size that
are suitable for quick charging .
200
@ For the sake of the environment
Batteries contain polluting substances. They
must be disposed of us ing methods that w ill
not harm the env ironment. Do not dispose of
them in househo ld trash.
(D Tips
The charging time for t he included rechargea­
ble batter ies is approximate ly three to four
hours and may increase by approximately 25
percent if the batter ies are in use while charg­
ing .
Headphones connected by cable
App lies to: vehicles with Rear Seat Entertainment
The headphone connec tions are located on the
RS E control unit.
Fig . 21 0 Co nn ect in g wir ed h eadpho nes
.,. Insert t he headphone connecto r into the left or
right jack
CD q fig . 210 on the RSE control pan ­
el.
The unit is eq uipped w ith 3.5 mm stereo jacks .
The w ireless headphones sw itch off automat ical­
l y about f ive minutes after the cable headphones
a re connected.
(D Tips
Volume that is too h igh or too low is auto­
mat ica lly adjusted to a preset level whe n the
wired headphones are connected.