warning light AUDI A8 2018 User Guide

Cockpit overv ie w
On -Board Diagnostics
F ig. 19 Loc ation of D ata Link Connec tor (DLC)
On-Board Diagnostics moni tors the components
of your emission control system . Each monitored
component in your eng ine system has bee n as­
signed a code . In case of a ma lfunction, the com­
ponent w ill be identified and the fa ult stored as a
code in t he control module memo ry.
The MI L light may also illuminate if there is a
leak in the on-board fuel vapor recovery system .
I f t he lig ht ill uminates af ter a ref uel ing, stop the
ve hicle and ma ke sure the fue l filler cap is p rop ­
erly closed
c> page 2 70 .
In order to make an accurate d iagnosis, the stor­
ed data can on ly be disp layed using specia l diag­
nos tic eq uipment (gene ric sc an tool for OBD).
In order to connect t he specia l diagnostic equip­
ment , push the plug into the Data Link Connector
(D LC). The D LC is located to the rig ht of t he hood
release
c> fig. 19.
Your author ized Audi dealer or a qualified service
s tat ion can interpret the code and perform the
necessa ry repa ir.
A WARNING
Do not use t he di agno stic con nector for pe r­
sonal use . Incorrect usag e c an cause ma lfu nc­
tions, which can increase the ris k of a colli­
sion !
Electronic speed limiter
-
Your veh icle may be factory equipped with ti res
that are rated for a maxim um speed of 130 mph
(210 km/h) . This is less than the maximum speed
of your vehicle . To reduce t he risk of sudden tire
26
failure and loss of contro l if the vehicle is operat ­
ed at excessive speeds, your vehicle also has an
e lectronic speed limite r. The elect ronic speed
li miter prevents your ve hicle from go ing faster
th an the tire speed rat ing . For more information
c> page 290 .
If the engine cont rol un it rece ives fa ulty vehicle
speed s ignals, the Ma lf u nction Indicator Lamp
( M IL)
¢..ift will illuminate. If this occurs, contact
the nea rest authorized Aud i dea ler for ass is ­
tance .
58
Your vehicle's top speed is electronically lim ited
to 155 mph (250 km/h).
If the engine control unit receives fa ulty vehicle
speed signals, the Ma lf u nction Indicato r Lamp
(MIL)
¢..ift w ill illuminate. If this occurs, contact
the nea rest authori zed Audi dea ler for ass is­
tance.
A WARNING
A lways obse rve t he posted speed limits and
adjust yo ur speed to sui t prevailing road, tra f­
fic and weather condit ions. Never d rive your
ve hicl e faster t han the ma ximu m speed rating
of the t i res inst alled .
-

Opening and clo sin g
@ Tips
- Do not leave valuables unattended in t he ve­
hicle . A locked vehicle is not a safe!
- The LED in the driver 's door rail blinks when
you lock the vehicle . If the LED lights up for
approximately 30 seconds after locking,
there is a ma lfunction in the central locking
system. Have the problem corrected by an
authorized Audi dealer or authorized Audi
Service Fac ility.
Key set
F ig. 20 You r veh icle key set
@ Remote control ke y with integr ated
mechanica l key
You can unlock and lock your vehicle w ith the re ­
mote control key . A mechanical key is integrated
in the remote control key
Q page 29 .
@ Separate mechanical ke y
This key is not intended for constant use. It
should only be used in an emergency . Do not car­
ry it on your key ring and do not store it in the ve­
h icle.
Rep lacing a ke y
If a key is lost, see an authorized Audi dealer or
authorized Audi Service Facility. Have this key de­
activated . It is important to bring all keys with
you .
If a key is lost, you should report it to your
insurance company .
Number of keys
You can check the number of keys ass igned to
your veh icle in the Infotainment system. Select:
the
I CAR I function button > Car sy st e m s control
button
> Ser vice & cont rol > Pr ogrammed ke ys.
28
This way, you can make sure that you have all the
keys when purchasing a used vehicle.
Electronic immobilizer
The immobilizer p revents unauthorized use of
the ve hicle.
Under certain circumstances, the vehicle may not
be able to start if there is a key from a d ifferent
vehicle manufacturer on the key chain .
Data in the master ke y
When driving, service and maintenance-relevant
data is cont inuous ly stored in your remote con ­
trol key . Your A udi se rvice advisor can read out
th is data and tell you abo ut the work yo ur vehicle
needs . T his applies also to veh icles w ith a con­
venience key *.
Personal convenience sett ings
If two people use one vehicle, it is recommended
that each person always uses their own remote contro l key. When the ignit io n is tu rned off or
whe n the vehicle is lo cked, pe rsonal convenience
settings for the following systems a re stored and
ass igned to the remote master key .
- Climate cont rol system
- Central lock ing system
- Window and rear shade*
- Interior lighting*
- Memory function
- Park ing aid*
- Adaptive cr uise control *
- Ac tive lane assist*
- Side ass ist*
- Dr ive select
- Night vision assist*
- Steeri ng wheel heating*
The stored settings are automat ica lly recalled
when you unlock the vehi cle, open the doors or
turn on the ignition.
A WARNING
A lways take the vehicle key with you when
leaving the vehicle, even for a short period of
time. This applies particularly when child ren
rema in in the vehicle . Otherwise the children
-

lL t:0 ....
"' ......
"' .... 0 0 :c ' The settings in the Infotainment system deter­mine if the entire vehicle or only one of the doors
is unlocked when unlocking the vehicle
c:> page 32.
_&. WARNING
Read and heed all WARNINGS c:> .& in Descrip­
tion on page 2 7.
@ Tips
If your vehicle is left standing for a long peri­
od of time, note the following:
-The proximity sensor switches off after a
few days to save energy. You then have to
pull once on the door handle to unlock the
vehicle and a second t ime to open it.
-The energy management system gradually
turns off unnecessary convenience functions
to prevent the vehicle battery from draining
and to mainta in the vehicle's ab ility to start
fo r as long as possib le. You may not be able
to unlock your vehicle us ing the convenience
key.
- Fo r an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada reg ulations, see
c:> page 339 .
Central locking switch
Fig. 25 Dr iver 's door: centra l lock ing sw itc h
Op eni ng and clos ing
Fig. 26 Rear doors: central lock ing switch
"To lock the vehicle, press the ffi button c:> fig . 25
or c:> fig. 26, c:> &_ .
.. To unlock the vehicle, press the crl button .
When locking the veh icle with the central lock ing
switch, the following app lies:
-Opening the door and the luggage compart­
ment lid from the
outside is not poss ible (for
secur ity reaso ns, such as when stopped at a
light).
- The LED in the central locking sw itch turns on
when all doors are closed and locked.
- Front doors: you can open the doors individual­ ly from the inside by pulling the door handle .
- Rear doors: to unlock the doors, pull on the
door ha ndle
one time . To open the doors, pull
on the door handle
again .
- In the event of a crash with a irbag deployment,
the doors unlock a utomat ically to allow access
to the vehicle.
_&. WARNING
- The central locking switch a lso works when
the ign ition is switched off and automatica l­
ly locks the entire vehicle when the
ffi but ­
ton is pressed.
- The cent ral locking switch is inope ra tive
when the vehicle is locked from the outside.
- Locked doors ma ke it more diffic ult for
emergency workers to get into the vehicle,
which puts lives at r isk. Do not leave anyone
behind in the vehicle, especially c hildren .
(D Tips
Your vehicle locks automatically when it
reaches a speed of 9 mph (15 km/h) (Auto
Lock)
c:> page 27 . You can unlock the vehicle
31

lL t:0 ....
"" ......
"" .... 0 0 :c ' driver's door@¢ fig. 35. The indicator light in
the button turns on/blinks.
.,. To activate/deactivate the child safety lock on
both sides, you must press
the [±] buttons one
after the other.
Vehicles with ~ button
.,. To deactivate/activate the power window
switch in the rear doors, press the [@button in
the driver's
door @ c;, fig. 35. The indicator
light in the button turns on/blinks .
.,. To also deactivate/activate the inner door han­
dle, open the respective rear door and turn the
key switch w ith the mechanical key in the direc­
t ion of the arrow or opposite the d irection of
the arrow
¢fig. 36.
The follow ing funct ions are also turned off when
the child safety lock is act ivated :
- The buttons for the sunshade* in the rear win­
dow .
- The buttons for the power sunshades* in the
side windows.
- The button for the front passenger seat ad just­
ment* (for vehicles with
the[±] button when the
child safety lock is activated for the rear door
on the passenger's side).
.&_ WARNING
Always take the veh icle key with you when
leaving the vehicle, even for a short period of
time. This applies particularly when children
remain in the vehicle. Otherwise children
could start the engine or operate electrical
equipment (such as power windows), which
increases the risk of an accident.
-
Opening and closing
Power window
Controls
The driver can control all power windows.
Fig. 37 Section of driver 's doo r: controls
All power window switches are equipped with a
two -stage function:
Opening and closing the windows
CD N M 0
::> CD m
.,. To open or close the window completely, press
the switch down or pull the switch up brief ly to
the second level. The ope rat ion will stop if the
sw itch is pressed/pulled again.
.,. To select a position in between opened and
closed, press/p ull the switch to the first level
until the des ired window position is reached .
Power window switches
CD Left front door
@ Right front door
® Left rear door
@ Right rear door
.&_ WARNING ~
-Always take the vehicle key with you when
leaving the vehicle, even for a short period
of time. This applies particularly when chil­
dren remain in the vehicle. Otherwise the
children could start the engine or operate
electrical equipment such as power win­
dows, which increases the risk of injury. The
power windows continue to function until
the driver's door or front passenger's door
has been opened.
- Pay careful attention when closing the win­
dows. Pinching could cause serious inj uries .
37

lL t:0 ....
"' ......
"' .... 0 0 :c ' The following buttons are deactivated when the
va let parking function is switched on :
-1""'1 button in the driver's door
-I ""' I button on the remote control key
- Handle in the rear lid
When the valet parking function is switched on,
the message
Valet parking activated appears in
the instrument cluster display when you switch
the ignition on.
Garage door opener (Homelink)
Description
Ap plies to: vehicl es with garage door opener (Homeli nk)
Fig. 42 Garage door opene r: examples o f usage for differ­
ent systems
W ith the garage door opener (Homel ink), you
can activate systems such as the garage doors,
security systems or house lights from ins ide your
vehicle. Three buttons are integrated in the head­
liner that can be programmed to up to three re­
mote controls.
To be able to operate systems using the garage
door opener, the buttons in the headliner must
first be programmed .
A WARNING
When operating or programming the garage
door opener, make sure that no people or ob­
jects are in the area immediately surrounding
the equipment. People can be injured or prop­ erty can be damaged if struck when closing.
Opening and closing
(D Tips
-For security reasons, we recommend that
you clear the programmed buttons before selling the vehicle.
- For add itiona l information about Homelink,
visit www.homelink.com.
- For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see
¢page 339.
Programming buttons
App lies to: vehicles with garage door opener (Home link)
Fig. 43 Headliner: controls
You can program both fixed code and rolling code
systems using this procedure.
Programming/reprogramming buttons
.. Switch the ignit ion on.
.. Press and hold the button in the headliner that
you would like to program for at least 10 sec­
onds. Or
.. Select: ! CAR ! function button> Car systems
control button > Vehicle settings > Garage
door opener > Program garage door opener.
.. Follow the instr uctions in the Infotainment sys-
tem.
Deleting button programming
The programmed buttons cannot be deleted indi­
vidually. They must be deleted all at once. Repro­
gram the buttons if necessary .
.. Select: the ICAR !function button> Car systems
control button > Vehicle settings > Garage
door opener > Clear program settings
> Yes.
41

lL t:0 .-,
"' ......
"' .-, 0 0 :c " Lights and Vision
Exterior Lighting
Switching the headlights on and off
F ig . 44 Instrument panel: l ig ht switc h w ith all -weather
l ig hts
The headlights only wo rk when the ignition is
switched on. While sta rting the engine or when
switch ing off the ign ition, the headlights will go
off and only the side marker lig hts will be on .
I f the sys tem is not operating p roperly, a w arning
symbol in the dr ive r informa tion d isplay is dis­
p layed .::>
page 24.
Light switch --r;_-
T u rn the switch .::> fig. 44 to the co rresponding
position . When the lights are switched on, the
:o o:
sym bol turn s on .
0 - The lights a re off or the daytime runni ng
lights are on :
-USA models: The daytime running lig hts will
come on automatically when the ignition is on
and the light sw itch .::>
fig. 44 is in the O posi­
t ion or the
AUTO position (only i n day light con­
di tions). The
Daytime running lights function
c an be turned o n and off i n the MM I
¢ page 45, i=> &..
-Canada model s: The dayt ime runn ing lights
will come on au toma tic ally when the igni tion is
on and the light swi tch .::>
fig. 44 is in the O po ­
s ition, the
:oo: pos ition or the AUTO position
(o nly in daylig ht
conditions) .::>&. .
AUTO -Automat ic head lig hts sw itch on and off
depend ing on br ightness, for example in tw ilight,
d uring rain or in
tunne ls ¢ &. .
Lights and V ision
:oo: -Side marker ligh ts
io -Low beam head lights
~ -All-weather lig hts
lw -Rear fog lights*. When the rear fog lights are
on, the symbol
0$ on the sw itch will i lluminate.
All-weather lights
The front lights are adjus ted au toma tica lly so
that you are less likely to see g lare from your ow n
head lig hts, for example when driving on a wet
road.
Automatic dynamic headlight range control*
Yo ur vehicle is equ ipped with a headlight r ange
contro l system so tha t the head lig hts do not
blind oncoming t raffic if the vehicle load
changes . T he hea dlight range also adj usts auto­
matically when brak ing and acce lerating .
Light functions
The following light funct io ns are available de ­
pending on veh icle equipment and o nly fu nction
whe n the light switc h is in t he AUTO position.
You can deactivate these functions in the MMI
under
Audi adaptive light ¢ page 45.
Static cornering light* -the corne ring light
switches on automatically when the steering
wheel is turned at a certai n angle at s peeds up to
approximately 44 mph (70 km/h) and when the
turn s ignal is activated at speeds up to approxi­
mately 25 mp h (40 km/h) . The area to t he side of
t h e ve hicle is illuminated better w hen turning.
Dynamic curve light * -the curve light adapts it­
self to the curves in the road .
Highway l ight function* -this function adapts
t h e lig hting for highway driving based on vehicle
speed .
A WARNING ~ --Automatic headlights are only intended to
assist the driver. They do no t relieve the
driver of his responsib ility to check the
headligh ts and to turn them on manually
ac co rding to t he cur rent light a nd vis ib ili ty
conditions . Fo r example, fog cannot be
43

Lights a nd Vis ion
detected by the light sensors. So a lways
switch on the headlights
§.D under these
weather conditions and when driving in the
dark .
- Crashes can happen when you cannot see
the road ahead and when you cannot be
seen by other motorists . Always turn on the
headlights so that you can see ahead and so
that others can see your
car from the back.
- The rear fog lights should only be turned on in accordance with traffic regulat ion, as the
lights are bright for following traffic.
- Please observe legal regulations when using
the light ing systems described .
@ Tips
-The light sensor* for automatic dynam ic
headlight range control* is located in the
rear view mirror mount . You should there­
fore not apply any st ickers to the w indshield
i n this area in order to prevent malfunctions
or fail ures .
- In the event of a ligh t sensor malfunct ion,
the driver is not ified in the instrument clus­
ter
d isplay~ page 25.
- You w ill hear a wa rning tone if you open the
driver door when the exter ior lights are
switched on .
- In cool or damp weather, the inside of the
headlights, turn s ignals and tail lights can
fog over due to the temperature difference between the inside and outside . They will
clear short ly after switching them on . This
does not affect the service life of the light­
i ng .
44
Turn signal and high beam lever
The turn signal lever operates the turn signals,
the high beams and the headlight flasher .
Fig. 45 T urn signa l an d high beam leve r
Turn signa ls¢ Q
N 0 .... 0 :i:
"' m
The t urn signa ls act ivate when you move the lev­
er into a turn signa l position when the ignit ion is
switched on.
(D -Right turn signal
@ -Left turn signal
The turn signa l blinks three times if you just tap
the lever.
H igh be ams and h eadlight fla sh er ~D
Move the lever to the corresponding position:
@ -High beams on (vehicles with High beam as­
sistant* ~ page 44)
@-High beams off or headl ight flasher
T he
El indicator light in the instrument cluster
turns on.
A WARNING
High beams can cause glare for other drivers,
which increases the risk of an accident . For
this reason, only use the high beams or the
headlight flasher when they will not create
g la re for othe r drive rs .
High beam assistant
App lies to: vehicles with high beam ass istant
A camera on the rearv iew mirror mount can de-
tect light sources from other road use rs. The high
beams switch on or off automatically depending
IJI>

u. co .... N
" N .... 0 0 :c ' on the position of vehicles driving ahead and on­
coming vehicles, the vehicle speed and other en­
vironmenta l and traffic conditions.
Activating high beam assistant
Requirement: the light switch must be set to the
AUTO position and the high beam assistant must
be switched on in the Infotainment system
~ page 45 .
.,. To activate the high beam assistant , tap the
l ever forward @. T he
II ind icator light ap­
pears in the instrument cluster display and the
high beam headlights are switched on/off auto­
matically. The
ii indicator light also turns on if
the high beams are switched on.
Switching the high beams on/off manually
If the high beams did not switch on/off automat­
ica lly as expected, you may switch them on or off
manually instead:
.,. To switch the high beams on manually, tap the
lever forward @. T he
ii indicator light turns
on .
.,. To switch the hig h beams off manua lly, pull the
lever
back @. The high beam assistant is deac­
t ivated.
Operating the headlight flasher
.,. T o operate the headlight flasher when the high
beam assistant is activated and high beams are
switched off, pull the lever
back @. The high
beam assistant rema ins active.
Messages in the instrument cluster display
Headlight assist: System fault
Drive to an authorized Aud i dea ler or authorized
Audi Service Fac ility immediately to have the
malfunction corrected. You can still switch the
high beams on or off manually.
Headlight assist: Unavailable No camera view
The camera view is blocked, for example by a
sticker or debris .
The sensor is located between the interior rear­
view mirror and the windshield. Do not place any
stickers in this area on the windshield.
Lights and Vision
A WARNING
--
High beam assistant is only intended to assist
the driver. The driver is still respons ible for
controlling the headlights and switching
them manually depend ing on light and visibil­
it y conditions. It may be necessary to operate
them manually in situations such as:
- I n adverse weather conditions such as fog,
heavy rain, blowing snow or spraying water.
- On roads where oncom ing traffic may be
pa rtiall y obscured, such as expressways.
- When there are road users that do not have
sufficient lighting, such as b icyclers or
vehicles with dirty tail lamps.
- I n tight curves and on steep hills.
- In poorly lit areas.
- With strong reflectors, such as signs.
- If the area of the w indshield near the sensor
is fogged over, dirty, icy or covered with a
sticker .
Adjusting the exterior lighting
The functions are adjusted in the Infotainment
system.
.,. Select: I CAR ! function button > Car systems
control button > Vehicle settings > Exterior
lighting .
Automatic headlights
You can adjust the following sett ings in the Au­
tomatic headlights
menu:
Headlights activation time -you can adjust if the
headlights switch on
Early, Medium or Late ac­
cording to the sensitivity of the light sensor.
Auto-dimming high beams* -you can switch the
high beam assistant*
On and Off .
Daytime running lights*
USA models :
the daytime running lights can be
switched on/off. Select
On or Off.
Canada models:
this function cannot be switched
off. They activate automatically each time the ig -
nition is switched on .
IIJ>-
45

Lights and Vision
Q/P -Adjusting the left/right exterior mirror.
Move the knob in the desired direction.
4lll -Heats the mirror glass depending on the out­
side temperature.
8 - Folds the exterior mirrors* . In the Infotain­
ment system, you can select if the mirrors fold in
automatically when you lock the vehicle
¢page 32.
Front passenger's exterior mirror tilt
function*
To help you see the curb when back ing into a
parking space, the surface of the mirror tilts
slightly. For this to happen, the knob must be in
the position for the front passenger's exterior mirror.
You can adjust the tilted mirror surface by turn­
ing the knob in the desired direction. When you
move out of reverse and into another gear, the
new mirror position is stored and assigned to the
key you are using.
The mirror goes back into its original position
once you drive forward faster than 9 mph
(15 km/h) or turn the ignition off .
A WARNING
Curved mirror surfaces (aspheric or convex*)
enlarge the field of vision. However, they
make objects in the mirror appear smaller
and farther away . You may estimate incor­
rectly when you use these mirrors to gauge
your distance from the vehicles behind you
when changing lanes, which increases the risk
of an accident.
(D Note
- If the mirror housing was moved by outs ide
forces (such as an impact when maneuver­
in g), you must use the power folding func­
tion to fold the mirror all the way out. The
mirror housing must not be moved back in-
to place by hand because this would impair
the function of the m irror mechanism.
-If you wash the vehicle in an automatic car
wash, you must fold the exterior mirrors in
to reduce the risk of damage to the mirrors.
48
Never fold power fold ing exterior mirrors by
hand . Only fold them in and out using the
power controls.
(D Tips
-If the power adjusting function malfunc­
tions, the glass in both mirrors can be ad­
justed by pressing on the edge of it by hand.
-The exterior mirror settings are stored with
the memory function* ¢
page 59.
Dimming the mirror
Fig. 51 Automat ic d imming rearv iew m irro r
0
~ 0 :i: ~ m
.. To dim the interior rearview mirror and both ex­
terior mirrors*, press the button @. The LED @
turns on. The interior rearview mirror and exte­
rior mirrors* dim automatically when light
shines on them, for example from headlights
on a vehicle behind you.
A WARNING
Electrolyte fluid can leak out from broken
mirror glass. This liquid can irritate the skin,
eyes and respiratory system. If there is con­
tact with the fluid, flush immediately with
p lenty of water . Consult a physician if neces­
sary.
-
-Repeated or long-term exposure to electro­
lyte fluid can lead to irritation of the air­
ways, especially in people with asthma or
other respiratory conditions. Take deep
breaths immediately after leaving the vehi­
cle or, if this is not possible, open all of the
doors and w indows as wide as possible.
-If electrolyte fluid enters the eyes, flush
them thoroughly with a large amount of

Lights and Vision
Retracting the rear door sunshades*
~ To re tract the sunshade from the driver's seat,
press the left/right rear power window switch
~ in the driver's door.
~ To retract the sunshade from the rear of the
vehicle,
press the power window switch Q;;; in
the left/right rear door.
You can adjust the settings for the rear sunshade
so the shade retracts automatically when you se­
lect the reverse gear. Select:
CAR function button
> Car systems control button > Vehicle settings
> Automatic rear blind > On. The settings are au ­
tomatically stored and assigned to the remote
control key. T he sunshade is extended again as
soon as the vehicle is traveling forward at a speed
greater than 9 mph (15 km/h) if the ignition has
not been switched off in the meantime .
&_ WARNING
Always pay careful attention when closing the
sunshades. Pinching could cause serious inju­
ries.
@ Tips
- Pressing the l~•~l button several times in a
r ow can trigger the overload protection. The
sunshade can on ly be extended/retracted
again after a brief waiting period.
- The rear window sunshade only functions
when the vehicle interior is warmer than
14°F (-10°().
Vanity mirror in the rear
Appl ies to: ve hicles w ith vanity mirro rs in th e rear
Fig. 55 Rear headl iner: vanity m irror
50
~ Press the button to fold the mirror open. The
mirror lighting turns on automatically .
~ To change the mirror's angle, move it forward/
back with your hand.
Windshield wipers
Switching the windshield wipers on
Fig . 56 Windsh ield w iper lever
Move the windshield w iper lever to the corre­
sponding posit ion:
@ -Windshield wipers off
G)-Rain sensor mode. The windshield wipers
switch on once the vehicle speed exceeds approx­
imately 2 mph (4 km/h) and it is raining. The
higher the sensitivity of the rain sensor that is set
(switch @to the right), the earlier the wind­
shield wipers react to mo isture on the wind­
shield. You can deact ivate the rain sensor mode
i n the Infotainment system, which sw itches the
i ntermittent mode on. Se lect:
ICARI function but­
ton
> Car systems control button > Driver assis·
tance
> Rain sensor> Off. In intermittent mode,
you can adjust the interval time using the switch
@.
@ -Slow wiping
@ -Fast w iping
@ -Single wipe. If you hold the lever in this posi­
tion longer, the wipers switch from slow wiping
to fast wiping.
®-Clean the windshield. The wipers wipe one
time after several seconds of driving to remove
water droplets. You can sw itch this function off
by moving the lever to posit ion ® within
10 sec­
onds of the afterwipe . The afterwipe function is
IJII>