light AUDI A3 SEDAN 2018 Owners Manual

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Care and cleaning
Component Situation Solution
Di spl ays/ins tru·
Deposits Soft cloth with LCD cleaner
men t clus ter
C o ntro ls
Deposits Soft brush, then a soft cloth with a mild soap solution3>
S af ety be lt s Deposits Mild soap solution al, allow to dry before letting them re-
tract
T ex tile s Deposits adhering to Vacuum cleaner
a
rtificial leather , the surface
Alcanta ra Water-based deposits Absorbent cloth and mild soap solutional
such as coffee, tea,
b lood , etc.
Oil-based deposits Apply a mild soap solution
al, blot away the dissolved oil or
such as oil, make-up, dye, treat afterward with water, if necessary
etc.
Special deposits such
Specia l stain remove r, blot with absorbent material, treat
as ink, nai l polish, la- afterward with mild soap solution, if necessary
a)
tex paint, shoe pol-
ish, etc.
Na tural l eather F resh sta ins Cotton clot h with a m ild soap so lution3l
Water-based deposits Fresh stains: absorbent cloth
such as coffee, tea, Dried stains: stain remover suitable for leather
blood, etc .
Oi l-based deposits Fresh stains : absorbent cloth and stain remover suitable
such as oil, make-up ,
for leather
etc. Dried stains: grease dissolving spray
Special deposits such Spot remove r su itab le for leather
as ink, na il polish, la -
tex paint, shoe po l-
ish, etc .
Care Regularly apply condit ion ing cream that protects from
light and penetrates into the material. Use specia l co lored
cond itioni ng cream, if necessary.
Car bon part s Deposits clean the same way as plast ic parts
a) M ild soap solut ion : max imu m two tablespoons of neutral soa p in 1 quar t (1 liter) of water
A WARNING
The windsh ie ld may not be treated with wa­
ter-repell ing wi ndsh ield coating agents. Un­
favorable cond it ions su ch as wet ness, dar k­
ness, o r low sun can resul t in increased glare.
Wiper blade chatter is also possib le.
(QJ) Note
- Headlights /tail light s
-
-Never clean headlights or tail lights w ith a
dry cloth or sponge.
- Do not use any cleaning product that con ­
tains alcoho l, because they could cause
cracks to form.
-Wheels
- Neve r use any pa int polish or other abra-
sive mate rials.
- Damage to the protect ive layer o n the
rims such as stone ch ips or sc ratches must
be repai red immediately.
.,.
357

Care and cl eaning
- Camera len se s
- Never use warm or hot water to remove
snow or ice from the camera lens. Th is
could cause the lens to crack .
- Never use abras ive clean ing mater ia ls or
alcohol to clean the camera lens . This
cou ld cause scratches and cracks.
- Pow er top
- Remove bi rd dropp ings immedia tely.
- Never use gasoline, spot remover, ben-
zene, pa int thinne r or other solvents to re­
move.
- Door windows
- Remove snow and ice on windows and ex-
terior mirrors with a p lastic scraper. To
avoid scratches, move the scraper on ly in
one direction and not back and forth.
- Never remove snow or ice from door win­
dows and m irrors using warm or hot water
because this could cause cracks to form .
- To avoid damage to the rear w indow de­
fogger, do not apply any stickers on the
heating w ires on the inside of the window.
- Decorative parts /trim
- Never use chrome care or cleaning p rod-
ucts.
- Paint
-To red uce the risk of scratches, the vehicle
must be free of dirt and dust before pol­
ishing or waxing.
- To prevent paint damage, do not polish or
wax the veh icle in direct sunlight.
- To red uce the risk of paint damage, do not
polish away rust spots.
- Remove cosmetics and sunscreen immedi ­
ately - these could damage the paint.
- Di spla ys/ instrument cluster
- The d isplays/instrument cluster and the
trim surrounding them must not be
cleaned with dry cleaning methods be­
cause they could be scratched .
- Make sure that the instrument cluster is
switched off and has cooled off before
cleaning it .
- Make sure no fluids enter the spaces be­ tween the instrument cluster and the
trim, because that could ca use damage.
35 8
-Controls
- Make sure that no flu ids enter the con-
trols, because this could cause damage .
-Safety belts
- Do not remove the safety belts to clean
them.
- Never clean safety belts or their compo­
nents chem ica lly or with co rrosive fluids
or solven ts and never allow sharp objec ts
to come into contact with the safety belts .
This could ca use damage to the belt web ­
bing.
- If there is damage to the webbing, the
connections, the retractors or the buckles, have them replaced by an authorized Audi
dealer or authorized Aud i Serv ice Facility .
-Te xtile s/artificial leather / Alcantara
- Never treat art ificial leather/Alcantara
with leathe r ca re products, solvents, floor
polish, shoe polish, spot remove o r similar
p rodu cts.
- H ave a spec ial ist remove stubborn stains
to prevent damage .
-Never use steam cleaners, brushes, hard
sponges, etc. when cleaning.
- Do not turn on the seat heating* to dry the seat .
- Objects w ith sharp edges, such as zippers
or rivets on clothing or belts, can cause
damage to the surface .
- Open hook and loop fasteners, for exam ­
ple on clothing, can damage seat covers .
Make sure hook and loop fastene rs a re
closed.
- Na tural leather
- Never treat leather with solvents, floor
polish, shoe polish, spot remover or simi­
lar products.
- Objects with sharp edges, such as zippers
or rivets on clothing or belts, can cause
damage to the surface.
- Never use steam cleaners, brushes, hard
sponges, etc. when cleaning.
- Do not turn on the seat heating* to dry the
seat.
- To he lp prevent the leather from fading,
do not leave the vehicle in direct sunlight

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for long periods o f time . If leaving the ve ­
hicle parked for long periods of time, you
should cover the leather to p rotect it from
direct sunlight.
(D Tips
- Insects are easier to remove from paint that
has been fresh ly waxed.
- Regular waxing can prevent rust spots from
forming.
Placing your vehicle out
of service
If you wou ld like to take your vehicle out of serv­
ice for a longer time, contact an authorized Audi
dealer or authorized Aud i Serv ice Facility . They
w ill adv ise you of important measures, such as
corros io n protection, se rvice and storage proce ­
d ur es. A lso follow the information about the ve­
hicle battery
¢page 326.
Care and cleaning
359

Emergency assistance
-Before you change a wheel, be sure the
ground is level and firm. If necessary, use a
sturdy board under the jack.
-Always store the veh icle tool kit , the jac k
and the replaced tire in the luggage com­ partment
c:> page 255.
(D Tips
Obey all laws.
Changing a wheel
When you change a wheel, follow the sequence
described below step -by-step and in exactly that
order .
1. Remove the decorative wheel cover*. For
more details see also
c:> page 364, Decor a­
tive wheel covers
or c:> page 365, Wheels
with wheel bolt caps.
2 . Loosen the wheel bolts c:> page 365 .
3. Locate the proper mounting point for the
jack and align the jack below tha t point
c:> page 366 .
4. Raise the car w ith the jac k c:> page 366 .
5. Remove t he wheel with the flat tire an d t hen
ins tall
the spare c:> page 367.
6. Tighten all wheel bolts light ly .
7.
Lower the veh icle w ith the jack .
8. Use t he wheel bo lt wrench and
firmly t ighten
all whee l bolts
c:> page 365 .
9. Replace the decorative wheel cover* .
A WARNING
Always read and fo llow all WARNI NGS and in­
forma tion
c:> .& in Raising the vehicle on
pag e 366
an d c:> pag e 368 .
After changing a wheel
A wheel change is not complete without the do­
ing the following .
.,. Always store the vehicle tool kit, the jack * and
the replaced t ire in the luggage compartment
c:> pag e 255 .
.,. Check the tire pressure on the spare wheel im­
m ed iate ly aft er mo unt ing it.
364
.,. As soon as possib le, h ave the tightening tor­
ques
on a ll wheel bolts checked with a torq ue
w rench . The correct tighteni ng torq ue is
90 ft lb (120 Nm).
.,. Have the flat t ire replaced as soon as poss ib le .
(D Tips
-If you not ice that the wheel bo lts are cor­
roded and d ifficult to turn while c hanging a
t ire , th ey s hou ld be replaced before you
check the t igh tening torque.
-Dr ive at reduced speed until yo u have the
t igh tening torques checked .
- After chang ing a wheel, the tire p ressure in
all four tires must be checked/cor rected and
t h e tire pressure monito ring ind icator must
be stored in th e
MMI r:::;, pag e 349 .
Decorative wheel covers
Applies to: vehicles with decorative wheel covers
The decorative wheel covers must be removed
first to access the wheel bolts .
Fig. 285 Chang ing a whee l: Remov ing t he wh eel cover
Removing
.,. In sert t he hook (p rov ided w ith the vehicle t ool
kit ) in t he hole in the w heel hu b cover.
.,. Pull off the decorative wheel cover c:> fig . 285 .

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-Do not raise the v ehicl e until you are sure
the jack is securely engaged .
- Passengers must not rema in in the vehicle
when it is jacked up.
- Make sure that passengers wait in a safe
p lace away from the vehicle and well away
from the road and traff ic.
- Make sure jack position is correct, adjust
as necessary and then cont inue to raise
the jack.
CD Note
Do not li ft the vehicle by the sill. Position the
vehicle jack on ly at the designated lifting
points on the sil l. Otherwise, your vehicle will
be damaged.
Taking the wheel off/installing the spare
Follow th ese instructions st ep-by-step for chang­
ing the wheel .
Fig . 2 90 Ch angin g a w hee l: u sin g th e screwdr ive r ha ndle
(with t he bla de remo ved} t o turn t he bolts
F ig. 291 C h anging a w hee l: ali gnm en t pi n in side the to p
h ol e
1l Appli es to veh icles with ceram ic br ake rot ors•: Use a sec ­
on d alig nme nt pin * (sto re d in t he s pare w hee l we ll mo ld­
ing} for the lo w er hole , fo ll o w ing the de scr ip tion for t he
firs t alig nmen t pin .
Em ergen cy as sis tanc e
After you have loosened all whe el bo lts and
raised the vehicle off the gro und, remove and re­
place the wheel as follows:
Removing the wheel
.,. Use the hexagonal socket in the screwdriver
handle
t o comp letely remove the topmost
wheel bo lt and set i t aside on a
clean su rface
r=> fig. 290.
.,. Screw the threaded end of the alignment pin
from the too l kit hand-tight into the empty bo lt
hole
c> fig . 2911>.
.,. Then remove the other wheel bolts as descr ibed
above .
.,. Take off the whee l leaving the alignment p in in
the bolt hole
~ 0-
Putting on the comp act spare wheel
.,. Lift the spare wheel and carefully slide it over
the alignment p in to guide it in
place r=>@.
.,. Use the hexagonal socket in the screwdr iver
ha ndle to screw in and t igh ten all wheel bolts
slightly .
.,. Remove the alignmen t pin and insert and t igh t­
en the remaining wheel bo lt s light ly like the
rest .
.,. Tu rn the jack hand le counter-clockwise to lowe r
the vehicle until the jack is fully released .
.,. Use the wheel bolt wrench to tighten a ll wheel
bolts firmly
c> page 365 . Tighten them cross­
wise,
from one bo lt to the (approx imately) op ­
posite one , to keep the wheel centered .
CD Note
When removing or installing the wheel , the
r im could h it the brake rotor and damage the
r otor. Work carefully and have a second per­
son help you.
@ Tips
Never use the hexagonal socket in the handle
of the sc rewdrive r to loosen or t ighten the
whee l bolts.
367

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Fuses and bulbs
Fuses
Changing fuses
A fuse that has blown will have metal strips that
have burned through .
Fig. 2 96 Steering column area: cover
Fig. 297 Left s ide of the eng ine compartment: fu se cover
T h e fuses a re loca ted behind a cover in t he stee r­
ing column area ¢
fig. 296 or under a cover on
the left side of the engine compartment
¢ fig. 297.
.. Switch the ignition and all e lectr ica l equipment
off.
.. Check the following table to see which fuse be ­
longs to the equipment
¢ page 372 .
.. Remove the cover .
.. Remove the plastic cl ip from the fuse panel
cove r in the engine
compartment¢ fig. 297 .
.. Remove the fuse using the plastic clamp .
.. Replace the burned fuse w ith an identical new
one .
.. Reinsert the cove r.
Fuses and bulbs
Fuse color identification Color Current rating
in amps
Black 1
P urple 3
Light brown 5
Brown 7.5
Red 10
Blue 15
Yellow 20
W hite or tra nspa rent 25
Green 30
O range 4 0
_& WARNING
-
Do not repair fuses and neve r rep lace a blown
f u se with one that has a higher amp rating.
This can cause damage to the e lectr ica l sys­
tem and a fi re .
@) Note
If a new fuse burns out again shortly afte r you
have insta lled it, have the electrical system
chec ked as soon as poss ible by an authorized
Audi dealer or authorized Audi Service Fac ili­
ty.
(D Tips
- The following table does not list fuse loca­
tions that are not used.
- Some of the equipment listed in the fo llow­
ing tables applies on ly to certain model ver­
sions or certa in optional equipment.
371

Fuses and bulbs
Fuse ass ignment - interior
ij
::, CX) ID
F ig. 298 Vehicle interior: fuse assignment
No. Equipment
Fl Ad Blue engine components
F2 Seat adjustment
F3 Power top hydraulic pump
F4 Infotainment control panel,
Infotainment
components
FS Gateway
F6 Selector lever (automat ic transm iss ion)
Air conditioning/heating controls, auxiliary
F7 heating, rear window defogger relay, tire pressure monitor
Electromechan ical park ing brake switch,
light switch, rain/light sensor, anti-theft
F8 alarm system,
diagnostic connector, roof
module, emergency call system, head light
range control
F9 Steering col umn sw itch module
FlO Infotainment system display
Fll Left vehicle electrica
l system control mod-
ule
F12 Infotainment components
F13 Driver's side safety belt tensioner
F 14 Heat ing/a ir condit ion ing system blower
372
No . Equipment
FlS Electronic
steering column lock
F16 Infotainment components
Fl7 Instrument cluster
Fl8 Rearview camera
Fl9 Convenience access control module
F20 Engine components
F21 Steering column, steering wheel heating
switch module
F23 Panorama glass
roof/power top control
module, power top latch
F24 R
ight vehicle electrical system control
module
F2S Driver
's side front/rear power windows
F26 Seat heating
F27 Interior
lights
F28 Power top control module
F29 Interior lights
F30 Diagnostic connector
F32 Front camera, parking
system, ACC sensor,
lane change assist
F33 Airbag
Hold assist button, interior sound, revers-
F34 i
ng light sw itch, temperature sensor, neck
heating relay coil and socket relay, power
top operation button
Air quality sensor, automatic dimming
F3S rearview
mirror, diagnostic connector, cen-
ter console power supply
F36 Right
headlight (LED, Matrix LED)
F37 Left headlight (LED, Matrix LED)
F38 High-voltage battery
F39 Passenger
's side front/rear power w in-
dows
F40 Sockets
F41 Passenger's sid e safe ty be lt tens ioner
F42 Central locking area
F43 Sound-amplifier
F44 All wheel drive
F47 Rear window wiper
F48 Outer sound actuator

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No. Equipment
F49 Clutch sensor (relay 1+2),
high-voltage
battery, power electronics
F52 Control module for suspension control
F53 Rear window defogger
The power seats* are protected via
circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.
Fuse assignment -engine compartment
Fig. 299 Engine compartme nt: fuse assignment
No. Equipment
Fl Electronic Stabilization Control (ESC)
F2 Electronic Stabilization Control (ESC)
F3 Engine control module
Eng ine components, engine cooling, aux-
F4 iliary heater co il relay (1+4+7), secondary
air inject ion pump relay
FS Engine components, fue
l tank system
(diesel), CNG cut-off va lve
F6 Brake light switch
F7 Eng
ine components, water pumps, tank
system (gasoline engine)
FB Heat oxygen sensor
Fuses and bulbs
No. Equipment
F9 Engine
components, exhaust door, glow
time control module (relay 6)
F lO Fuel control module, fuel pump
F ll Auxiliary
heater heating element 2, en-
gine components, secondary air pump
F12 Auxiliary
heater heating element 3, vac-
uum pump
F13 Automat ic transmission
F lS Horn
F16 Ign
it ion coil (relay 8), power and control
electronics
F17 E
lectroni c Stabilization Control (ESC), en-
gine control module (relay S)
F18 Terminal
30 (voltage reference), battery
monitoring
Fl9 Windshield wipers
F20 Anti-theft alarm system
F22 Terminal
SO diagnos is, engine control
module
F23 Starter
F24 Auxiliary
heater heating element 1, brake
booster
F 31 Vacuum pump, water pump, high pres-
sure pump, fuel injectors
F33 Brake
pressure reservoir, recuperation,
transmission fluid pump
F34 Brake booster
F 35 A/C function
relay
F37 Parking heater
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for
you.
It is becom ing increasingly more and more diffi­
cu lt to replace vehicle light bulbs since in many
cases, other parts of the car must first be re­
moved before you are ab le to get to the bulb.
This applies especially to the light bulbs in the
373

Fuses and bulb s
front of your car which you can on ly reach
through the engine compartment .
Sheet metal and bulb ho lde rs can have s ha rp
edges that can cause ser ious c uts, parts must be
correct ly taken apart and then properly put back
together to he lp prevent breakage of parts and
long term damage from water that can enter
housings that have not been properly resea led.
F or your safety, we recommend that you have
your authorized Audi dealer replace any bu lbs for
you, s ince your dealer has the proper tools, the
correct bulbs and the expert ise.
Ga s di sch arg e lamps (Xen on li ght s)
Due to the high elect rical voltage, have the bulbs
replaced by a qua lified technic ian . Head lights
with Xenon light are ident ified by the h igh vo lt ­
age sticker.
LED h eadlight s*
LED headlights require no maintenance . Please
contact your authorized Audi dealer if a bulb
needs to be replaced .
A WARNING
Chang ing Xenon lamps w it h out the necessa ry
equ ipment can cause ser ious perso na l inju ry.
- Bul bs are p ressur ized and can explode when
being changed. Potentia l risk of i njury!
- On vehicles equipped wit h gas discharge
bulbs (Xenon light) life-threatening inju ries
can result from imp roper ha ndl ing of the
high -voltage po rtions of su ch lamps!
- Only yo ur auth o rized Aud i dea le r or q ual i­
fied workshop should change the b ulbs in
gas discharge lamps . There a re parts with
sharp edges on the openings and on the
bulb ho lders t hat can cause serious cuts . If
you are uncertain about what to do, have
the work performed by an authorized A udi
dealer or qualified workshop. Serious per­
sonal injury may resu lt from improperly per­
formed work .
(D Tips
-If you still prefer to rep lace the light bu lbs
yourself, be aware that the engine com part-
374
ment is a hazardous area to work in ¢ & in
Working in the engine comportment on
page 318 .
-It is best to ask your a uthorized Audi dea ler
whenever you want to change a bulb .

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defroster on to reduce any voltage peaks that may occur when disconnecting the jumper
cables. The headlights must be switched
off.
14. While the engines are running , remove the
cables in
reverse order from the way they
were installed, as described in ¢
page 3 76.
Make sure the cables do not get caught in
moving engine components .
15. Fold the cover back on the battery correct ly .
16. Sw itch the heater fan and rear w indow de­
froster
off.
Read and fo llow: ¢.&. in Preparation on
page 375
and ¢ (j) in Preparation on page 375.
(D Note
Do not use the negat ive termina l on the veh i­
cle battery for jump star ting. A malfunction
could occ ur in the vehicle electrical system.
@ Tips
- Make sure that the connected positive ter­
mina l clamps have sufficient contact with
metal.
- The vehicle battery in your vehicle vents to the outs ide so the battery gases d rain out of
the veh icle.
RS model s: starting the engine
Both jump start cables must be connected in the
correct order!
F ig . 301 Engine co mpartment : connector s for a c ha rge r
and jump star t cables
Em erge ncy s itua tions
Fig. 302 Jump star ting using a ve hicle bat tery in anothe r
ve hicl e:@ -drained, @- prov id in g curren t
M
lri 0 > (X) m
Jump sta rt p oin ts are located on the left side of
the engine compartment instead of the vehicle
battery ¢
fig. 301. Open the cap on the positive
terminal. The procedure for connecting jump start cables that is described next is designed to
help jump start your vehicle .
Follow the information about the vehicle battery
¢ page 326.
Pr eparation s
1. Read the follow ing carefully ¢ page 375,
Preparation .
2. Set the parking brake and place the selector
lever in the P position.
3. Turn the ign ition and electrical equipment
off i n both vehicles .
Conn ecting /d is conn ect ing the jum p sta rt
cable
4. Open the cover on the posit ive terminal.
5. Clamp the end of the red jump start cable to the
termina l(!) ¢ page 3 76, fig. 300 on the
drained vehicle
battery @c:;>(Q) in Prepara­
tion on page 375.
6. Clamp the other end of the red jump sta rt ca ­
ble to the positive terminal @on the veh icle
battery providing the current @.
7. Clamp the black end of the jump start cab le
prefer ably at the grou nd point , or on the
negative terminal of the vehicle battery @
on the vehicle providing the current @.
8 . Clamp the other end of the black jump start
cable
only to the gr ound point @ on you r
v e hicl e@ .
.,..
377