AUDI A3 SEDAN 2018 Owners Manual

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Spare tire
General information
Applies to: vehicles with space-saving spare tire (compact
spare tire)
Fig. 292 Luggage co mpa rtment: cargo floo r fo lded up
(versio ns 1 and 2 )
F ig. 293 Spare tire (exa mple)
The spare tire ~ fig. 293 is intended for short­
term use only . Have the damaged tire checked
and replaced if necessary by an authorized Audi
dealer or authori zed Audi Service Facility as soon
as possible.
There are some restrictions on the use of the
compact spare tire . The compact spare tire has
been designed specifically for your type of vehi­
cle . Do not replace it with the spare tire from an­
other type of vehicle.
Emergency assistance
" Lift the cargo floor by the p lastic handle.
" Hang the p lastic hook on the luggage compart ­
ment sea l
(D ~ fig. 292 .
"Turn the handwheel counter-clockwise and re-
move it .
"Remove the spare tire .
Snow chains
For technical reasons, the use of snow chains on
the compact spare tire is not permitted.
If you have to drive wi th snow chains and a front
tire fails, mount the spare tire in place of a rear
tire. Install the snow chains on the rear tire that
you removed, and install that in place of the
front t ire th at failed.
A WARNING
--
- After installing a spare tire, the t ire pres­
sure must be checked as soon as possible.
The tire pressure is available on
~ page 341,
fig . 278
- Do not drive faste r than SO mph (80 km/h)
with a compact spare t ire. Driving faster
than that increases the risk of an accident.
- To reduce the r isk of an accident, avoid full­
throttle accelerat ion, heavy braking, and
fast cornering with the compact spare tire.
- To reduce the r isk of an accident, neve r drive
with more than one compact spare tire.
- Normal summer or winter t ires must not be
mounted on the compact spare wheel rim .
Removing the subwoofer (version 1)
Applies to: vehicles with subwoofer in the spare wheel well
The subwoofer mus t be removed before the
spare wheel* can be removed .
Fig. 294 Spare tire well: subwoofe r
369

Emergency assistance
Removing the subwoofer
• Lift up the cargo floor ¢ page 369, fig. 292 .
• Press the connector tabs @¢ fig. 294 togeth ­
er.
• Remove the connector @and set the discon-
nected cab le aside.
• Remove the bo lt @ .
• Carefu lly remove t he subwoofer .
Installing the subwoofe r
• Carefully place the subwoofer in the rim we ll.
The word
"FRONT" on the subwoofer must face
f orward.
• Inse rt the connector that was removed .
• Secure the subwoofer with the bolt .
• Fold the cargo floo r cover bac k into p lace.
(D Tips
The subwoofer can also be mounted w hen t he
spare tire is not in the spare wheel well.
Removing the subwoofer (version 2)
Applies to: vehicles w ith s ubwoofer in the spare wheel well
The subwoofer must be removed before the
spare wheel* can be removed .
Fig . 295 Spare t ire well : su bwoofer
Remov ing the subwoofer
• Lift up the cargo floor ¢ page 369 , fig . 292 .
• Pull the lock (D ¢ fig. 295 toward the cab le.
• Press t he lock ing tab @down.
• Remove the connector @and set the removed
cable aside .
• Remove the bolt @.
• Caref ull y remove t he subwoofer.
370
Installing the subwoofer
• C arefully p lace the s ubwoofer i n the r im well.
The word "F RONT" on the s ubwoofer m ust face
forward .
• Insert the connecto r that was removed .
• Slide the lock (D back in the direction of the
subwoofe r.
• Secure the subwoo fer wit h the bolt.
• Fold the cargo floor cover back into place .
(D Tips
The subwoofer can also be mounted when the
spare t ire is not in the spa re whee l wel l.

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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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Emergency situations
General
This chapter is intended for trained emergency
crews and working personnel who have the nec­
essary tools and equipment to perform these
operations.
Starting by pushing or
towing
~ Note
Vehicles with an automatic transmission can­
not be started by pushing or towing.
Jump starting
Preparation
If needed, the engine can be jump started by an­
other vehicle battery.
Applies to: vehicles with plug-in hybrid drive: the
connection points for the jump start cable are
different
q page 102.
If the engine does not start because the vehicle
battery is drained, you can jump start the engine
using another vehicle battery. You need a jump
start cable to do this.
Both vehicle batteries must have 12 V nominal
voltage . The voltage capacity (Ah) of the vehicle
battery that is giving power must not be less
than the capacity of the drained vehicle battery.
Jump start cable
Only use a jump start cable with a large enough
diameter. Note the manufacturer's specifica­
tions .
Only use a jump start cable with insulated termi­
nal clamps.
Positive cable - usually red .
Negative cable -usually black.
Emergency situations
A WARNING
--
- Applies to: vehicles with plug-in hybrid
drive: you must
not give a jump start with
your vehicle . This could cause significant
damage to the electrical system in your ve­
hicle
Q page 102.
-A drained vehicle battery can freeze at tem­
peratures around 0
Q(. If the vehicle battery
is frozen, you must thaw it before connect­
ing the jump start cables. If you do not, this
increases the risk of an explosion and chem­
ical burns. After jump starting the vehicle,
drive to an authorized Audi dealer or author­
ized Audi Service Facility immediately to
have the vehicle battery checked.
- The engine compartment is a dangerous
area and can cause serious injuries. Before
working in the engine compartment, read
and follow the warnings
Qpage 318.
- Handling the jump start cables incorrectly
may cause the vehicle battery to explode
and lead to serious injuries . To reduce the
risk of injury, observe the following:
- Do not touch the non-insulated parts of the
terminal clamps. The cable must also not
come into contact with vehicle components
that conduct electricity when it is connected
to the positive terminal. This can cause a
short circuit.
- Route the jump start cables so they cannot
get caught in the moving parts in the engine
compartment.
- To reduce the risk of chemical burns, do not
bend over the vehicle battery.
- The locking bolts on the battery cells must
be tightened securely.
- Keep ignition sources (open flames, burning
cigarettes, etc.) away from the vehicle bat­
teries to reduce the risk of an explosion.
- Do not clamp the negative cable to fuel sys­ tem components or to the brake lines.
(LlJ} Note
- There must be no contact between the
vehicles, If there is, current could already be
.,.
375

Emergency situations
flowing when connecting the positive termi­
nals and the vehicle battery in the vehicle
providing the jump start cou ld be drained.
- Jump start cables can cause considerab le
damage to the vehicle electrical system if
they are connected incorrectly.
- The drained vehicle battery must be con­
nected correctly to the electrical system.
- P lease note that the connecting process de­
scribed below for the jump start cables is in­
tended for when your vehicle is being jump
started. If you are jump starting another ve­
hicle, do not connect the negative cable to
the negat ive terminal( -) on the drained ve­
hicle battery, but rather connect it to a large
metal component that is bolted securely to
the engine block, or to the engine block it­
se lf. If the vehicle battery in the vehicle be­
ing jump started is not vented to the out ­
side, there is a risk of explosion due to hy­
drogen gas.
@ Tips
If a car phone is installed, switch it off or
check the operating guide for what to do in
this situation.
A3 models: starting the engine
Both jump start cables must be connected in the
correct order!
F ig. 300 Ju mp starting using a vehicle batte ry in anot her
vehicle :@ - dra ined, @- providing cu rrent
Plug-in hybrid drive *: the connection points for
the jump start cables vary Q
page 102.
The vehicle battery is located on the left front
side of the engine compartment . Open the cover
to access the positive terminal of the vehicle bat-
376
tery. The procedure for connecting jump start ca­
bles that is described next is designed to help
j ump start your vehicle .
Follow the information about the vehicle battery
Qpage 326 .
Preparations
1. Read the following carefully ¢ page 375,
Preparation.
2. Set the parking brake and select neutral on
vehicles with a manual transmission, or move
the selector lever to the P position on
vehicles with an automatic transmission .
3. Turn the ignition and electrical equipment
off in both vehicles.
Connecting/disconnecting the jump start
cable
4. Fold the battery cover upward.
5. Clamp the end of the red jump start cable to
the termina l
(D ¢ fig. 300 on the drained ve­
hicle
battery @Q(D in Preparation on
page
375 .
6. Clamp the other end of the red jump start ca­
ble to the positive terminal @on the vehicle
battery providing the current @.
7. Clamp the black end of the jump start cab le
preferably at the ground 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 ground point © on your
vehicle @Q(D .
9. Route the jump start cables so they cannot
get caught in the moving parts in the engine
compartment.
Starting the engine
10. First start the engine in the vehicle giving the
charge and let it run at idle.
11. Now start the engine in the vehicle with the
dra ined vehicle battery and wait two to three
minutes until it "r uns smoothly".
12. If the engi ne does not start, stop the starting
procedure after 10 seconds and then repeat
it after approximately 30 seconds .
13. In the vehicle that is being jump started, switch the heater fan and rear window
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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
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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

Emergency situations
9. Route the jump sta rt cables so they cannot
get caught in the moving parts in the engine
compartment.
Starting the engine
10. First start the engine in the vehicle g iving the
charge and let it run at idle.
11. Now start the engine in the vehicle with the
drained vehicle battery and wait two to three
minutes until it "runs smoothly" .
12.
If the engine does not start, stop the starting
procedure after 10 seconds and then repeat
it after approximately 30 seconds .
13 . In the vehicle that is being jump started,
switch the heater fan and rear w indow de­
froster on to reduce any voltage peaks that may occur when disconnecting the jumper
cab les. The headlights must be switched
off.
14. While the engines a re 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 . Close the cap on the positive term inal.
16 . Sw itch the heater fan and rear w indow de­
froster
off.
Read and follow: ¢ .&. in Preparation on
page 375
and ¢ (D in Preparation on page 375 .
@ Tips
-Make sure that the connected positive ter­
minal clamps have sufficient contact with
metal.
- The vehicle battery in your vehicle vents to
the outs ide so the battery gases drain out of
the veh icle .
Towing with a tow truck
General hint s
Your Audi requires special handling for towing.
The follow ing information is to be used by com­
mercial tow truck operators who know how to op­
erate the ir equipment safely.
-Never tow your Audi. Towing will cause dam­
age to the engine and transmission .
378
-Never wrap the safety chains or winch cables
around the brake lines .
- To prevent unnecessary damage , your Audi
must be transported with a flatbed truck.
- To load the vehicle on to the flatbed, use the
towing loop found in the vehicle tools and at­
tach to the front or rear anchorage
¢page 378 and ¢page 379.
A WARNING
A vehicle being towed is not safe for passen­
gers . Never allow anyone to ride in a vehicle
being towed, for any reason.
Front towing loop
Fig. 303 Rig ht s ide o f front b umper: install ing the tow ing
loop
The threaded opening for the towing loop is lo­
cated behind a
cover on the right side of the front
bumper .
.,,. Remove the towing loop from the vehicle tool
kit ¢
page 360 .
.,,. Press inward on the upper le~ area of the cap
with brief, strong pressure to remove it from
the bumper
¢fig. 303 .
.,,. Insert the towing loop in the threaded opening
until it stops, and then tighten it with the
wheel wrench .
.,,. After using, place the towing loop back in the
vehicle tool kit .
A WARNING
If the towing loop is not tightened until it
stops when installing, the threads may be pulled out when towing the vehicle and that
could cause an accident .
-