lock AUDI A3 SEDAN 2018 Manual Online

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"To open the side panel, turn the lock and re ­
move the cover
"Lift the cargo floor using the plastic handle @
unt il the cargo floor engages beh ind the tabs
@ in both s ide panels¢ fig. 281 (upper im­
age) .
" Fold the cargo floor back befo re closing the
luggage compartment lid .
Veh icle tool kit and cargo floor co ve r
App lies to: ve hicles with vers ion 2
The vehicle tool kit, tire mobility kit* and com­
pressor* are stored in the luggage compartment
u nder the cargo floor
cover @¢ fig. 280.
"Engage the plastic hook ® in the luggage com-
partment
seal ¢ fig. 281.
" Fold the cargo floor back before closing the
luggage compartment lid .
..&, WARNING
Applies to: vehicles w ith jack
Improper use of the vehicle jac k can ca use se ­
rious personal injuries.
- Never use the screw drive r hex head to
t ighten whee l bolts, since the bolts cannot
attain the necessary tightening torque if you
use the hex head, potentially causing an ac­
cident.
-The factory -supplied jack is intended only
for your vehicle model. Under no circum­
stances should it be used to lift heavy
vehicles or other loads; you r isk injuring
yourself.
-Never start the engine when the vehicle is
ra ised, which could cause a n accident.
-Support the veh icle secure ly with appropri­
ate stands if work is to be performed under­
neath the vehicle; otherwise, there is a po­
tent ial risk for injury .
-Never use the jack supplied with your Audi
on another vehicle, particularly on a heav ier
one . The jack is only suitable for use on the
vehicl e it came w ith.
@ Tips
The vehicle jack* in your vehicle is mainte­
nance-free.
Em ergen cy as sis tanc e
Tire mobility kit
Preparation
Applies to: veh icles w it h tire mob ility kit
" Read and follow the important safety precau-
tions i n
¢page 360.
"Se t the park ing brake.
" Move the selector lever into the P position .
"Check if a repair with the tire mobi lity kit is pos -
sible
¢ page 361.
Using the tire mobility kit
Applies to: veh icles w it h tire mob ility kit
Fig. 282 Tire : tire damage t hat cannot be repaired
The tire repair is only meant for temporary use .
Change the spare tire as soon as
possible¢ &.
If the t ire is p ie rced by an object su ch as a nail,
do not remove the objec t from t he tire.
The tire repair set is able to be used at tempera­
tures as low as -4 °F ( -20 °C) .
The tire mobility kit may not be us ed :
-if the t ire has cuts or punctures that are larger
than 0.16 in (4 mm)
(D ¢ fig. 282
-if the rim is damaged @
-if you drove with very low tire pressure or with-
out air in the tire @
In this case, see an authorized Aud i dea ler o r au­
thorized Audi Serv ice Facility for ass istance.
.&_ WARNING
-Please note that the tire mobility kit cannot
be used in all situations, and that it may on­
ly be used temporarily .
-The tire sealant must not come in contact
with skin, eyes, or clothes.
361

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Wheels with wheel bolt caps
Applies to: ve hicles wit h whee l bo lts w ith ca ps
The cops must be removed first from the wheel
bolts before the bolts con be unscrewed.
Fi g. 286 Changing a wheel: removing the whee l bo lt caps
Removing
.,. Push the pla stic clip (provided wi th the veh icle
tool kit) over the wheel bolt cap unti l the inner
retainers on the clip align with the edge of the
cover.
.,. Remove the cap with the pla stic cli p (vehicle
tool kit)
¢ fig . 286.
Refitting
.,. Place the caps ove r the wheel bo lts and push
them back on.
The caps are to protect and keep the whee l bolts
clean.
Loosening and tightening the wheel bolts
The wheel bolts must be loosened before raising
the vehicle.
F ig. 287 C hanging a wheel: loosening the wheel bo lts
Em ergen cy as sis tanc e
Loosen ing
.,. Slide t he whe el wren ch onto the wheel bo lt as
fa r as it will go.
.,. Take tight hold of the end of the wrench hand le
and turn the wheel bolts
counter-clockwise
about one single turn in the direction of arrow
¢fig. 287.
Tightening
.,. Slide the wheel wrench onto the wheel bo lt as
far as it will go .
.,. Take tight hold of the end of the wrench hand le
and turn each wheel bolt
clo ckw ise until it is
seated.
A WARNING
-- Do not use force or hurry when changi ng a
wheel
-you can cause the vehicle to slip off
the jack and cause ser ious persona l inju ries .
-Do not loosen the wheel bolts more than
on e turn
befo re you raise the veh icle with
the jack.
-Y ou r is k an injury.
(D Tips
- Never use the hexagonal socket in the han­
dle of the screwdr iver to loosen or tighten
the whee l bolts.
- If a wheel bo lt is very tight, yo u may find it
easier to loosen by ca refully pushing dow n
on the e nd of the whee l bolt w rench with
one foot only. As you do so, hold on to the
car to keep yo ur balance and take care not
to slip.
365

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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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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.

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

u. 00 .-< N l'­ N .-< 0 N > 00
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
..,,

Emergency situations
~ Adjust liftin g arms o f workshop hoist o r floor
j ac k to matc h veh icle li fting points .
~ Insert a ru bber pa d between t he floor jack/
w ork shop h oist a nd the lifting p oints.
If
you must lift your vehicle with a floor jack to
work underneath, be sure the vehicle is safely
supported on stands intended for this purpose.
Front lifting point
Th e liftin g poin t is locat ed o n the floo r pa n re in­
for cement abou t at the same leve l as t he jac k
mo unt ing
p oint ~ fig . 306. Do not lift the vehi­
cle at the vertical sill reinforcement.
Rear lifting point
Th e liftin g point is lo cat ed on t he vert ic al rein­
f or cemen t of the lower si ll fo r th e on-bo ard j ack
q fig . 307.
Lifting with vehicle jack
Refer to Q page 366 .
.&_ WARNING
- To r educ e th e ris k of serious injur y an d ve hi­
cl e d ama ge.
- A lways lift t he ve hicle only at the s pecial
wo rksho p hoist and floo r jac k lift po ints il­
lust rated
q fig. 3 06 and q fig. 307.
- Fa ilure to lift the vehicle at these po ints
co uld cause the vehicle t o tilt or fa ll from
a li ft if th ere is a c hang e in vehicle w eight
d istr ibuti on and b alance . This might hap ­
p en , for exam ple, when h eavy co mpo­
n e nts such a s th e engi ne b lock or tr ans­
mission ar e re mo ved.
- W hen re moving h eavy co m pon ents lik e
th ese, anchor vehicl e to hoist or add cor re­
s ponding weigh ts to ma inta in t he ce nt er of
gr avity . Oth erwise, the ve hicl e m igh t ti lt or
s lip off the hoist , causing ser ious perso na l
injury .
(LlJ) Note
- Be awa re o f th e fo llowi ng points b efore li ft­
i n g th e ve hicle:
-The vehicle should never be lifted or
jacked up from underneath the engine oil
380
pan, the transmission housing, the front
or rear axle or the body side members.
This could lead to serious damage.
- To avoid damage to the underbody or
chassis frame, a rubber pad must be in­
serted between the floor jack and the lift
points.
- Before driving over a workshop hoist ,
check that the vehicle weight does not
exceed the permissible lifting capacity of
the hoist.
- Before driving over a workshop hoist, en­
sure that there is sufficient clearance be­
tween the hoist and low parts of the ve­
hicle.

Consum er Info rmation
today's automobi les, have steadi ly red uced the
scope of maintenance and repairs which can be
carried out by veh icle owners.
Al so , sa fet y and
en vironmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transmission parts w hich an owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, testing devices and other
equ ipment available to specially trained work ­
shop personnel in order to assure proper per­
forma nce, re liab ility and safety of the ve hicle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliab il ity of your
ve hicle and eve n void your vehicle warra nty .
Therefo re, proof of se rvicing in accordance w ith
the m aintenance schedule may be a condition fo r
up hold ing a possible wa rranty claim made wi thin
the warranty pe riod.
Above all, ope rational safety can be adversely af­
fected, c re ating unnecessa ry risks fo r you and
your passengers.
I f in doubt about any servicing, have it done by
your author ized Audi dealer or any other prope rly
eq uipped and qualified workshop . We strongly
urge yo u to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled mainte ­
nance and necessary repairs. Your dealer has the
facilities, origina l parts and tra ined specialists to
keep your veh icle running properly.
Performing limit ed maint enanc e yourself
The fo llowing pages describe a limited number of
procedures whic h can be performed on your ve hi­
cle with ordinary tools, should the need arise and
tra ined personnel be unava ilable. Before per ­
forming any of these procedures, always thor­
ough ly read all of the app licab le text and carefu l­
ly follow the instructions g iven . Always rigorously
observe the
W ARNINGS prov ided .
Befo re yo u check an ything in the engine com ­
partment , alway s read and h eed all WARNINGS
c> .&. and c> page 318 .
384
A WARNING
-Ser ious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extreme ly careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never r is k personal in jury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fu lly fam il iar with these
or other procedu res with respect to the ve­
hicle, or are uncertain how to proceed.
- Do not do any work wi thout the prope r tools
and eq uipmen t. H ave the necessary wo rk
done by your authorized Audi dealer or an ­
other properly equipped and qualified work­
shop.
- The engine compartment of any motor vehi ­
cle is a potentially hazardous area . Never
reach into the area around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
gine is off . The radiato r fan switches on au­
tomatically when the coolant reaches a cer­
tain tempe rature and w ill cont inue to run
until the coolant temperature d rops.
- Always sw itch off the ignition before anyone
gets under the vehicle.
- Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle. The jack supp lied with the veh i­
cle is no t adequate fo r th is pu rpose and
could collapse causing serious personal in­
jury .
- If you must wor k unde rneath the vehicle
w ith the wheels on the g round, always make
sure the vehicle is on level ground, that the
wheels a re always sec urely blocked and that
the engine cannot be started.
- Always make sure the transmission se lector
lever (automatic t ransm iss ion) is in P (Park
position) and the pa rk b rake is applied .
Ill>