AUDI A3 SEDAN 2018 Workshop Manual

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Lights and Vision
Exterior Lighting
Switching lights on and off
F ig . 4 7 Instrument p anel: l ig ht sw itc h w ith buttons
Li ght switch ·'A ·
Turn the light sw itch to the corresponding posi­
tion when the ignition is switched on.
;oo : and the
selected pos ition turn on (except pos ition 0).
0
-The daytime r unning lights automat ica lly t urn
on. In veh icles for certain markets, you can
switch the automat ic daytime running lights on
and off in the Infotainment system.
AUTO *
-The headlights automatica lly adapt to
the surro unding brightness.
:oo : -Parking lights
fD -Low beam headlights
Buttons
When you turn the light switch to the AUTO" or
low beam headlight
fD position, you can activate
the following:
<,if.D -All-weather lights. The front lights are ad­
justed automatically so that there is less glare
for the driver from his or her own lights, for
ex­
ample whe n roads are wet .
0$ -Rear fog light(s)
Automatic headlight range control
Applies to: ve hicles with headlig ht range control
Your veh icle is equipped with an autom atic head­
light range control system that red uces g lare fo r
oncoming traffic if the veh icle load c hanges. The
headlight range ad justs automatica lly .
Lights and V ision
Audi adaptive light
Appl ies to: vehicles wit h adaptive light
Adaptive ligh t provides bet ter visibili ty whe n it i s
dark by adapting the ligh ts to the road conditions
based on speed , such as on e xpressways, rura l
roads, at intersections, and in c urves. The adap­
t ive lights only function when the light switch is
i n the AUTO* posit io n and the all-weather lig hts
are switched off.
A WARNING
-
- Automatic headlights * are on ly intended to
assis t the driver. They do not relieve t he
d river of re spo nsibility to check the head­
lights and to t urn them on m anua lly b ased
on t he cur re nt ligh t an d visibility condition s.
For e xam ple, fo g canno t be detecte d by the
light senso rs . So always switch on the low
beams under these weather con dit ions an d
when dr iv ing in the dark
fD.
-To prevent glare for traffic behind yo ur vehi ·
cle, the rear fog lights shou ld only be turned
on in accordance with t raff ic regulat ions.
- If the ve hicle battery has been discharging
for a while , the park ing light may switch off
automatically. A lways make su re you r vehi­
cle is parked and adequately lit acco rding to
the laws . Avo id us ing the pa rking ligh ts for
sev eral hou rs .
- Always observe legal regula tions when us ­
ing the lighting sys tems desc ribed.
@ Tips
- The lig ht sensor for the automat ic head­
lights* is in the rearview mirror mount . Do
not p lace any st ickers in this area on t he
w indshield .
- Only the front headlights turn on when the
daytime running lig hts are sw itched on *. In
veh icles in ce rtain markets, t he tai l lights
w ill also turn on .
- In cool or damp weather, the inside of the
hea dlights, t urn sign als and tail lights can
fog ove r due to t he tempera ture diffe rence
b etween the insi de an d outside. They will
clear shortly after swit ching them on. This
does not affect the service life of the light­
ing .
49

Lights and Vi sion
Turn signal and high beam lever
The lever operates the turn signals, the high
beams and the headlight flasher .
®
,
I
@
Fig . 48 Turn s ig nal and hig h bea m le ver
Tu rn signals ¢i Q
N
0 0
> u. a,
The turn s ignals activa te whe n you move the lev ­
er into a turn signal position w hen the ignition is
switched on.
(D -Right tu rn signa l
@-Left turn signal
The turn signal b links three times if you tap the
lever (conven ience turn signal).
High b eams and h eadlight flash er ~D
M ove the lever to the corresponding position :
@-High beams on (vehicles w ith High beam as­
sistant*
9 page 50)
© -High beams off or headlight flasher
The
ii indicator light in the instrument cluster
turns on .
A WARNING
High beams can cause g lare for other drivers,
w hi ch increases the risk of an accident . For
this reason, o nly use the high beams or the
head light flashe r whe n they w ill not create
glare fo r other d rivers.
so
High beam assistant
App lies to : vehicles wit h high bea m ass istant
The high beam assistant automatically turns the
high beams on or off depending on the surround­
ing conditions .
A camera on the rearv iew mirror mou nt can de­
tect light sources from other road users . The high
beams sw itch on or off automatically depend ing
on the pos it ion of vehicles d riving ahead and on­
com ing vehicles , the veh icle speed as well as o th­
e r environme nta l fac to rs and traffic co ndit io ns.
Activating high beam assistant
Requirement: the light sw itch must be set to AU ­
TO, the low beams must be sw itched on and the
high beam assistant must be sw itched on in t he
Infotai nment system
9 page 51.
"" To act ivate the hig h beam ass istant, press the
lever forward @
9 page 50, fig. 48 . The ID or
Ji1 indicator light appears in t he i nstr ument
cl uste r d isplay and the h igh beams are sw itch­
ed on o r off autom atically. The
ii ind icator
light tu rns on if the high beams were sw itched
on.
Switching the high beams on /off manually
If the high beams d id not swi tch on/off automat­
i ca lly as expected, yo u may switc h them on o r off
manua lly ins tead :
""To switch the h igh beams on manually, push
the lever forward @. T he
ii indicator light
tu rns on. To sw itch the high beams off aga in ,
pull the leve r
back@.
""To switch t he high beams off man ua lly, pull the
lever
back @. The high beam assistant is deac­
tivated .
Operating the headlight flasher
""To operate the headlig ht flashe r when the high
beam ass istant is activated and hig h beams a re
switched off, pull the lever
back @. The high
beam assistant remains active .
Messages in the instrument cluster display
@e-8·1 Headlight assistant : malfun ction! See
owner' s manual

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Drive to an authorized Audi dea le r o r aut horized
Audi Service Facility immediately to have the
malfunct ion corrected. You can still switch the
high beams on or off manually.
11 Hea dlight a ssistant : currently unav ailable.
No camera view
a:a Headlight a ssistant : currently unavailable.
Camera view restricted due to surroundings .
See owner 's manual
The camera view is b locked, fo r example by a
s tic ker o r debris. Ple ase clean t he w indshie ld.
The senso r is located i n the inter ior rearv iew m ir­
ro r mount . D o not place any stickers in this a rea
on the windsh ield.
,& WARNING
High bea m assistan t is only i ntended to assist
t he driver. The dr iver is still re sponsib le for
contro lling the headlights and may need to
switch them on and off manually depend ing
on light and visib ility conditions. It may be
necessary to ope rate them manua lly in s itua­
tions such as:
- In adverse weather cond itions such as fog,
heavy ra in, b low ing snow or sp raying water .
- On roads where oncoming traffic may be
partially obsc ured, such as expressways .
- If there a re road users w ith poor lighting ,
such as bicyclists.
- In tight c urves and on steep hills .
- In poor ly li t areas.
- W it h stro ng reflec tors, such as si gns.
- If the ar ea of the windsh ield near the s enso r
is fogged ove r, dirty, i cy or covere d w it h a
sti cker.
Adjusting the exterior lighting
The fu nctions are adjusted in t he Infotainment
system.
• Se lect in the Infotainment system: ! M ENU I but­
ton
> Vehicle > left contro l butto n > Vehicle
settings
> Exterior lighting .
N > l) This fun ctio n is not a vailab le in all c oun tries. co
Lights and V ision
Automatic headlights*
Yo u ca n adjus t the following se ttings in the Au­
tomatic headlights
men u:
Activation time* -yo u can adjust if th e he ad ­
li gh ts sw itc h on
Early , Medium or Late acc ording
t o th e se nsitivity o f the light sensor .
Headlight assistant *· you can switch the high
beam assis tant* on and off.
Entry/ exit lighting*
You can switch the entry/exit lighting" on and
off . When it is dark, it illum inates the area
aroun d th e vehicle whe n unlock ing the vehicle
and af ter sw itchi ng off th e i gnition and opening
t h e dr iver 's doo r.
The entry/exit lighting only works whe n it is da rk
and the light sw itch is i n the
AUTO * position .
Daytime running lights1l
The daytime running lig hts can be turned on and
off. When daytime running lights a re t urned on,
the lights will stay on continuously whenever the ignition is sw itched on .
Emergency flashers
Fig. 49 Instrume nt pa nel: e merge ncy f las her b utto n
The emergency flashe rs makes other drivers
aware of your ve hicle in dange rous situations.
• Press the ~ button to switch the emergency
flashe rs on or off .
0
i
You can ind icate a lane cha nge or a turn when t he
eme rgency flashers a re switc hed on by using the
..,_
51

Lights and Vision
turn signal lever. The emergency flashers stop
temporarily .
The emergency flashers also wo rk when the igni­
tion is turned off.
Interior lighting
Front interior lighting
F ig . SO Headl iner: fr ont inte rior lig htin g (exa mple)
:ti ?
Applies to: vehicles with touch-sensitive reading lights
F ig. 51 Headli ner: front inte rior lig hts
Pr ess the co rres ponding bu tton in the he adline r
to activate the following:
~ * -Inter io r li ght ing o n/off
[!] -Door contact sw itch on/off. The interior light­
i n g is controlled automatically.
CTI* -Reading lights on/off
App lies to: veh icles with touch-sensitive reading lights
.. T o turn a reading lig ht on or off, to uch the s ur­
face (!) briefly ¢fig. 51 .
.. To activate the manua l dimming function ,
touch the
surface (!) when the light is switched
off and keep touching it unt il the desired
brightness is reached .
52
Rear interior lighting
Applies to: vehicles with rear reading lights
Fi g. 52 Headli ne r: re ar reading l ights (example)
.. To t urn a read ing light on/off, press the button
~ or~ *-
Interior lighting
Applies to: vehicles with interior lighting
The Interior lighting can be adjusted in the Info­
tainment system .
.. Select in the Infotainment system: IMENU ! but­
ton
> Vehicle > l eft cont rol button > Vehicle
settings
> Inte rior light ing .
You may be ab le to ad just the brightness of the
i ndivid ua l zones, depending on vehicle eq uip­
ment .
.. Press the right control button and se lect one of
the zones that is shown .
The inter ior light ing turns on when you sw itch
the headlights on w hile the ign ition is on.
Instrument illumination
You can adjust the background brightness of the
instruments and display illumination.
Fi g. 53 In st ru m en t ill uminat ion

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~ Press the knob to release it.
~ Turn the knob toward "-"or"+" to reduce or in­
crease the brightness.
~ Press the knob again to return it to its original
position.
(l') Tips
Depending on vehicle equipment, the instru­
ment illumination (needles and gauges) may
turn on when the lights are off and the igni­
tion is sw itched on . The illumination for the
gauges reduces automat ica lly and eventually
turns off as brightness outside increases. This
function reminds the driver to turn the low
beams on at the appropriate time.
Vision
Adjusting the exterior mirrors
Fig. 54 Driv er's door: k n ob for the ex ter ior mirrors (exam­
p le)
Turn the knob to the desired position:
0
-all adjustment functions are deactivated.
Q/ P -adjusts the left/right exterio r mirror.
Move the knob in the desired direction .
Cilll -Heats* the mirro r glass depending on the
outside temperature.
.9 -Folds the exterior mirrors* . To fold the mir­
rors out, turn the knob to one of the other posi­
tions . In the Infotainment system, you can select
if the mirrors fold in automat ically when you lock
the vehicle
~ page 35.
Lights and Vision
Front passenger 's exterior mirror tilt
function*
To help you see the curb when backing 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 (for example convex)
enlarge the field of v is ion. 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
-Applies to vehicles with power fo lding exte­
r ior mirrors : if the mirror hous ing was
moved by outside forces (such as an impact
when maneuvering), you must use the pow­ er folding function to fold the mirror all the
way out. The mirrors will make a loud noise
when they latch into place. The mirror hous­
ing must not be
moved back into place by
hand because this would impair the func­
tion of the mirror mechanism.
- Applies to veh icles without power folding
exterior mirrors : if the mirror housing was
moved by outside forces (such as an impact
when maneuvering), you must
move it back
in place by hand.
- 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 .
Never fold power fo lding exterior mirrors*
.,.
53

Lights and Vision
by hand. Only fo ld them in and out using
the power controls.
(D Tips
If the power adjustment fails, both mirrors
can be adjusted by hand by pressing on the
edge of the mirror surface .
Dimming the mirrors
Your vehicle is equipped with a manual or auto­
matic* dimming rearview mirror .
Manual dimming rearview mirror
~ Pull the lever on the bottom of the mirror back .
Automatic dimming rearview mirror*
~ The interior and exterior mirrors dim automati­
cally when light shines on them, for example
from headlights on a vehicle behind you .
.&_ WARNING
Applies to: vehicles with automa tic dimming rearview
m irror
Electro lyte fluid can leak out from broken
m irror glass. This liquid can irritate the skin,
eyes and resp iratory system.
If there is con­
tact with the fluid, flush immediate ly with
plenty 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 peop le with asthma or
other respiratory condit ions. Take deep
breaths immediate ly after leaving the vehi­
cle or, if this is not possible, open all of the
doors and windows as wide as possible.
- If electrolyte fluid enters the eyes, flush
them thoroughly with a large amount of
clean water for at least 15 minutes and then
seek medical attention .
- If electrolyte flu id comes into contact w ith
the skin, flush the affected area with clean
water for at least 15 minutes and then clean
with soap and water and seek med ica l at­
tention. Clean affected clothing and shoes
tho roughly before wearing again.
54
-
-If the fluid was swallowed and the person is
conscious, flush the mouth w ith water for at
least 15 minutes. Do not induce vomiting
unless this is recommended by medical pro­
fessionals . Seek medical attention immedi­
ately .
(D Note
Applies to: veh icles with automatic d imming rearv iew
mirro r
Electrolyte fluid can leak out from broken
mirror glass. This liquid damages plastic sur­
faces . Clean this liquid as quickly as possible
with a wet sponge.
@ Tips
App lies to: veh icles with automatic d imm ing rearv iew
mirro r
-If the light reaching the rearview mirror is
obstructed, the automatic d imm ing mirror
will not function correctly,
- The automatic dimming m irrors do not dim
when the interior lighting is turned on or
the reverse gear is selected.
Sun visors
(~--- )
Fig. 55 Left side: sun viso r (example)
The sun visors can be moved out of their brackets
and turned toward the doors
(D. The sunshade
can a lso be moved back and forth lengthwise in
th is position*.
The mirror light switches on when the cover over
the van ity m irror* @opens .

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Windshield wipers
Switching the windshield wipers on
Fig. S6 Windshield wiper lever
Fig. S7 Rear window wiper• operatio n
t® I
a @
lll ®
Iii @
•®
Move the windshield wiper lever to the corre­
spond ing pos ition:
@ -Windshield wipers off
(D-Interval mode. To increase/decrease the wip­
er intervals, move the switch
@ to the left/right.
In vehicles with a rain sensor, the wipers turn on in the rain once the vehicle speed exceeds ap­
proximately 2 mph (4 km/h). The higher the sen­
sitivity of the rain sensor that is set (switch
@ to
the right), the earlier the w indshield w ipers react
to moisture on the windshield . You can deacti­
vate the rain sensor mode in the Infotainment
system, wh ich switches the intermittent mode
on. To do this, select :
I MENU I button> Vehicle>
left control button > Driver a ssistance > Rain
se nsor.
@ -Slow wiping
@ -Fast wiping
@-Single wipe. If you hold the lever in this posi­
tion longer, the wipers switch from slow wiping
to fast wiping.
Lights and Vision
®-Clean the windshield. To eliminate water
droplets, the windshield wipers perform one af­
terw ipe after several seconds while dr iv ing in
temperatures above 39 °F (4 °C). You can switch
this function off by moving the lever to position
@within 10 seconds of the afterwipe . The after ­
wipe function is react ivated the next time you
switch the ignition on .
Clean the headlights. The headlight washer sys­
tem operates only when the low beam headlights
are sw itched on . If you move the lever in position
®, the headlights will be cleaned in fixed inter­
vals.
Applies to: vehicles wi th rear window wiper
@ -Wipe the rear window. The rear wiper moves
about every 6 seconds .
The rear wiper automatically switches on when
the reverse gear is selected and the front wind­
sh ield wipers are on and running.
(j)-Clean the rear window . The number of wipes
depends on how long the lever is held in position
(j) .
A WARNING
-The rain sensor* is only intended to assist
the driver. The driver may still be responsi­
ble for manually switch ing the w ipers on
based on visibility conditions.
-The windsh ield may not be treated w ith wa­
ter-repelling windshield coating agents. Un­
favorable conditions, such as wetness, dark­
ness and when the sun is low, can cause in-
'
creased glare, which increases the r isk of an
accident. Wiper blade chatter is also possi­
ble.
-Properly functioning windshield wiper
b lades are required for a clear view and safe
driving¢ page 56, Replacing the front
wiper blades.
(D Note
- If there is frost, make sure the windshield
wiper blades are not frozen to the wind­
shield. Switching on the windshield wipers
when the blades are frozen to the wind­
shield can damage the wiper blades .
-
55

Lights and Vi sion
-The windshield wiper system must be
switched off (lever in position @) before us ­
i ng a car wash. This prevents the wipe rs
from sw itching on unintentionally and ca us­
i ng damage to the w indshie ld w iper system .
(D Tips
-The windshield wipe rs switch off w hen t he
i gnition is switched off. Yo u can act ivate the
windsh ield wipers after the ign ition is
switched back on by moving the windsh ield
wiper leve r to any pos it io n.
-Worn or dirty windshield wiper blades result
i n streak ing . This can affect the ra in se nsor
f u nct io n. Check yo ur windsh ield wiper
blades regularly.
-The washer fl uid nozzles in the w indshield
washer system are heated* a t low tempera­
tures whe n the ignition is on .
-When stop ping tempora rily, such as at a
traffic light, the speed of the windsh ie ld
wiper s automat ica lly re d uces by o ne leve l.
Cleaning the wiper blades
Clea n the w ipe r blades when you see wipe r
strea ks. Use a so ft clot h and a glass cleaner .
Windshield wiper
"' Place the windshield wipe r arms in the se rvice
pos it ion
<=> page 56.
"' Fo ld t he w indshield wipe r arms away from the
winds hield.
Rear window wiper
Applies to: vehicles with rear window wiper
"'Fold the wi per arm away from the rear w indow .
A WARNING
Dirty w indshield wi pe r blades can impair vi­
sio n, which incre ases the risk of an accident.
«1j) Note
If you see streaks aga in a fter cleaning the
w iper blades, the blades mus t be replaced
<=> page 56.
56
-
Replacing the front wiper blades
Fig. 58 Removin g windsh ie ld wiper bl ades
Windshield wiper service po sition /blade
replacement position
a, ... M 9
I
"' To br ing the w ipers into the service position,
tur n the ignition off and move t he w indsh ie ld
w iper lever into pos it ion
@ for at least two sec­
onds
c:> page 55, fig. 56.
"' To bring t he w indsh ie ld w ipers b ack to t he nor ­
ma l posi tion, switc h the ignition on and ho ld
the windshield wiper lever in position @ unti l
the windshi eld wipe rs go back to t he normal
position, or drive faster than 8 mph (12 km/h).
Removing the wiper blade
"' Fold th e w indsh ie ld w iper arm aw ay from t he
windshie ld.
"' Press the locking knob (D <=> fig . 58 on the wiper
blade. Ho ld the wipe r blade firmly.
"' Remove the w iper blade in the d irection of the
ar row.
Installing the wiper blade
"' Insert t he new wiper blade into the mount on
the wipe r
arm@ until you hear it latch into
place .
"'Place the wiper arm back on the winds hield.
"'Turn the service pos ition off .
A WARNING -
For safety reasons, the wi ndshield wipe r
b lades should be rep laced once o r twice eac h
ye ar.

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(D Note
-Only fold the windshield wipers away when
they are in the service position. Otherwise,
you risk damaging the paint on the hood or
the windshield wiper motor.
- You should not drive your vehicle or press
the windshield wiper lever when the wiper arms are folded away from the windshield .
The windshield wipers would move back in­
to their orig inal position and could damage
the hood and windshield .
(D Tips
- You can also use the service position, for ex­
ample, if you want to protect the windsh ield
from icing by using a cover.
- You cannot activate the service position
when the hood is open .
Replacing rear wiper blade
Applies to: vehicles wit h rear w indow wiper
Fig. 59 Rea r window w iper: removing t he wiper b lade
Removing the wiper blade
.. Fold the wiper arm away from the rear window .
.. Hold the wiper blade below the center -arrow-
¢ fig. 59 and pull it out of the retainer . Hold
the windshield wiper arm securely wh ile doing
this.
Installing the wiper blade
.. Press the wiper blade mount into the retainer.
Securely hold the wiper arm at the upper plas­
t ic end .
Lights and Vision
.. Fold the window wiper arm back onto the rear
window.
A WARNING
For safety reasons, the windshield wiper
blades should be replaced once or twice each
year .
Digital compass
Switching the compass on and off
Appl ies to: veh icles w ith dig ital compass
Fig. 60 Rearview m irror: digital compass is sw itched on
gi N 0
> u.. m
.,. To turn the compass on or off, press the button
(D u nt il the compass d isplay in the mirror turns
on or off.
T he dig ital compass only works when the ignit ion
is turned on . The directions are indicated with ab­
brev iat ions:
N (north), NE (northeast), E (east),
SE (so utheast), S (so uth), SW (southwest), W
(west), NW (northwest) .
(j) Tips
To prevent inaccurate compass readings, do
not br ing any remote controls, electrical devi­
ces or metallic objects near the mirror.
57

Lights and Vision
Adjusting the magnetic zone
Applies to: ve hicles w ith d ig ital compass
The magnetic zone must be adjusted correctly for the compass to read accurately.
Fig. 61 Magnetic zone map
~ Press and hold the button CD~ page 57, fig . 60
until the number of the magnetic zone appears
in the interior rearview mirror.
~ Press the button CD repeatedly to select the
correct magnetic zone . The selection mode
turns off after a few seconds.
Calibrating the compass
A pp lies to: ve hicles w ith d ig ital compass
If the display is incorrect or inaccurate, the com­
pass must be recalibrated.
~ Press and hold the button CD until a "C" ap­
pears in the interior rearview mirror.
~ Drive in a circle at about 6 mph (10 km/h) until
a dir ection is displayed in the in terior rearview
mirror.
58
A WARNING
To reduce the risk to yourself and other driv·
ers, calibrate the compass in an area where
there is no traffic.