2018 AUDI A3 SEDAN open hood

e-t ro n
The vehicle tool kit and the tire mobility kit (Tire
Mobility System) are located in the side trim pan­
el @ and ® in the luggage compartment.
Addit ional info rmation about the vehicle tool kit
may be found under ¢
page 360 and informa­
tion about the tire mobility kit under
¢ pag e 361.
@ Tips
The vehicle must not be operated without the
tire repair set.
Vehicle transport
A ppl ies to: ve hicles w ith p lug- in hybrid drive
The following contains information you should
know about transporting your vehicle .
The MQB-A high-voltage lithium -ion battery sys­
tem equ ipped in yo ur vehicle is composed of SA­
NYO 12 UF 261 591 h igh-vo ltage batteries and
has passed test 38 .3 in accordance with the UN
Tests and Criteria handbook . The vehicle may be
transported with the high-voltage battery instal­
led as conventional class 9 ha zardous materials
without additional official consent for air and sea
sh ipment (current law ICAO-TI and IMDG-Code
01.01.2012) .
Jump start
App lies to: ve hicles w ith plug -in hybrid drive
The term "vehicle battery " refers to the 12 Volt
battery in your vehicle.
F ig . 1 05 Eng in e co mpartment: conn ectors for a c harge r
and jump star t cables
The vehicle is equipped with one vehicle battery
and one high-voltage battery .
102
If the vehicle battery is drained, it can be charged
with a charger or you can jump start the vehicle us ing another vehicle's battery in the same way
as a conventional vehicle.
Read the information about charging the vehicle
battery ¢
page 32 7 and for jump starting the ve­
hicle
¢ page 375 .
.,. Open the hood ¢ page 320.
.,. Remove the fuse box cover @ to access the
positive terminal
0 ~ page 321.
.,. Clamp the terminal clamps from the charg ing
device or jump start cable to the positive termi­
nal
0 and to the body ground point Q .
@ Note
You must not give a jump start with your vehi­
cle . Th is cou ld cause s ignificant damage to
the electrical system i n your vehicle .
Coolant
Applies to: vehicles wit h pl ug-in hyb rid drive
Fig . 106 En g in e compartment: coolant exp ans ion tank
Your vehicle has two coolant expansion tanks
that are separate from each other:
@ : expansion tank for gasoline engine and elec ­
tric motor .
@: expansion tank for the high -vol tage area.
The expan sion ta nk @ must not b e opened
¢,& .
.,. Switch the ignition off.
.,. Open the hood ¢ page 320.
.,. Always check the coolant level in both coolant
expansion tanks @ and @ using the outer
ma rkings.
1111>

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~ When you fill coolant in t he expansion tank @,
please refer
to ¢ page 324, Cooling system.
~ Do not drive any fart her if t he coo lant leve l in
the expansion tank @ is low . Contact an au­
t h orized Audi dea ler or authorized Audi Service
Facility
immed iate ly ¢ .&, .
A WARNING
-Read and follow t he war nings in
¢ page 318, Working in the e ngine com­
partme nt
before ope ning t he hood an d
ch ecking t he co ola nt level.
- T he e xp ansion ta nk @ may only be opened
a nd filled by an authoriz e d Aud i de aler or
au thorize d Au di Service Fac ility.
- Co olan t can en ter the ins ide of the hig h­
volt age b attery w hen filling t he expa nsion
tank @ and cause a s hort c ircui t, which in ­
c reases the risk of fire.
Refueling
Opening the fuel filler door
App lies to: vehicles with p lug-in hybrid drive
F ig. 10 7 Drive r's door: butto n ii
The tank system must be vented be fore refueling
~ Swi tch the ign ition off with the
I S T AR T EN GINE ST OP ! button .
~Pullon th e~ switch.
~ The fue l filler door will open automat ica lly af-
te r venting is comp lete.
R ead and fo llow the directions for inserti ng the
f u e l pump nozzle
¢ page 103 .
Read and fo llow the inst ru ct io n s for re fueling
¢ page 315.
e-tron
Inserting the fuel pump nozzle
Applies to: vehicles with plug -in hybrid drive
Fig. 108 Fueling proced ure: in sert t he fue l p ump nozz le
correct ly
M ake s ure w hen inserting the fuel pump noz zle
t h at you do no t press o n the fuel filler door o pen ­
er (!) with the fue l pump nozzle . See the label in
the fue l fi ller
door @. Otherwise, a valve wi ll
close in the fue l filler neck and fueling w ill stop
even if t he tank is not full.
Yo u m ust vent the tank system again if you press
o n the fue l filler doo r opener . The fuel p ump noz ­
zle can stay in the fuel filler neck when doing
t hi s. Vent the tank system by pu lling the
00
switch again in the d river's doo r¢ page 103.
Messages
Applies to: vehicles with plug-in hybrid drive
ti Fuel filler door open_ Please press button
again to refuel
Fueling is possib le for a certain amount of time
after press ing
the~ button . Yo u m ust press the
00 button aga in if th is time is exceeded .
ti Fuel filler door: malfunction! Unlock fuel
filler door manually. See owner's manual
T he re is a ma lfunction. Yo u must manually un­
lock the fue l fi ller door
<=> page 104.
ti Warning! Vehicle performance may be limit­
ed
T he fue l tank is almos t emp ty. You must ant ici­
pa te a sig nificant power lo ss. Dr ive imme diate ly
to a gas sta tion.
./ Warning! Limited performance .,. POWER LIMIT
103

e-tron
Applies to: vehicles with Audi virtual cockpit mt
Incompatible ch arging s ystem . Please check
c harging system
Applies to: vehicles with analog instrument clus­
ter:
mt AC charging : currentl y not po ssible
This message appea rs whe n the charg ing system
is incomp atib le. O nly charge usi ng the charg ing
system tha t is designed fo r you r vehi cle.
mt AC charg ing sy stem: malfunction! Pl ease
c ontact Service
This message appears if there is a ma lfunction in
the charg ing system . H ave the problem corrected
immed iate ly by an authorized Aud i dealer or au­
thor ized Audi Se rvice Facility.
Charging unit cover
emergency release
Applies to: vehicles with plug-in hybrid drive
Fig . 120 Fron t of th e ve hicle: cover e merge ncy re lease
You can release the cover using the eme rgency
release.
• Turn the cover lock to the horizontal position .
• Unlock the vehicle .
• Open the hood ~ page 320, Opening/closing
the hood.
• Caref ully pull on the k nob @ until there is re­
s ista nce.
• T urn the cover lock to the ver tical position
~ page 110, fig. 117 .
• Slide the cover carefu lly to the s ide if necessa­
ry .
116
Climate control
Description
Applies to: vehicles with plug-in hybrid drive
Your vehicle has aux iliary air conditioning
T he aux iliary air conditioning is activated depend­
i ng on the outside temperature and the tempera ­
ture set on the climate control unit. You can im­
med iate ly switch the climate cont rol on or off
¢ page 116 as well as set a timer r::;,page 117.
Auxiliary climate control
The aux iliary climate contro l contro ls the tem­
perature in the veh icle inter ior ent irely with elec­
tric power .
It turns o n on ly if the h igh-vo ltage
batte ry cha rge level is suff ic ient a nd there is
eno ugh fuel in the tank .
@ Tips
- The temperature that the climate control
system adjus ts to depends on the last tem­
perat ure yo u se t in the climate contro l unit
¢ page 69.
- Us ing the auxiliary air cond itioni ng while
charging can also red uce the c harge leve l of
the high-voltage battery .
- T he clim ate cont rol sys tem does no t au to­
matically switc h on o r off earlier if the hig h­
voltage battery cha rge or fuel leve l is too
low.
Switching on/off
Applies to: vehicles with plug-in hybrid drive
Switching the auxiliary climate cont rol on /
off :
• Select the I MENU I button> Vehicle > left con­
trol b utton >
Auxiliary air conditioning > Turn
on auxiliary heating / AC or Turn off auxiliary
A C.
(D Tips
- T he auxiliary climate contro l can also be
switched on and off immedia tely wh en a
t imer is se t.
-If the blower is switched off w ith t he~
~ page 69, fig. Bl button, then the auxiliary .,..

Checking and Filling
-Do not a pply u nder body protectant in t he
exhaust system area, because this increases
the risk of fire.
On Board Diagnostic
System (OBD)
The On-Board Diagnostic System monitors the
engine and transmission componen ts that influ ­
ence emissions.
F ig . 2 64 Footwell o n left s ide o f th e veh icle : co nn ect io n
port fo r the O n-Boa rd D iagno stic Syste m (OBD)
On-Board Diagnostic System
Engine data can be read out at the On-Board D i­
agnostic System connec tion po rt usi ng a special
tes ting device
~ fig . 264.
Indicator light
If thP ¢.j indicato r light bli nks or tu rns o n, there
is a malfunction that is causi ng poor emissions
qua lity and tha t could damage the ca talytic con­
ve rte r.
Drive s lowly to an author ized A udi dealer or au ­
thor ized Audi Se rvice Facility to have the ma l­
function co rrected .
The indicator light can also tur n on if t he fuel fill­
er cap is not closed
correct ly ~ page 315.
A WARNING
Incorrect use of the connection port fo r the
O n- Board Diag nostic System can ca use mal­
functions, which can then result in ac ciden ts
and ser ious injuries.
-Only allow a n author ized Audi dealer or au­
t h o riz e d Aud i Ser vice Faci lity to re ad o ut the
engi ne dat a.
318
-
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and fill ing fluids, there is a risk of in­
jury, scalding, accidents , and burns . For thi s
reason, follow all the w arnings and general
safety p re caut ion s prov ided in the following in­
formation. The engine compartment is a dan­
gerous are a.
~ .&,.
A WARNING
To reduce the ris k of injur ies, comp lete the
follo wing steps before opening t he hood:
- Tur n t he engine off.
- Switch the igni tio n off.
- Set the park ing brake.
-Move the selector lever into the P position.
-N ever open the hood when there is steam o r
coo lant escaping from t he engine compart­
ment, because there is a risk that yo u could
be burned . Wait unt il no steam or coolant is
escapi ng.
- L et the eng ine cool down .
-Keep children away from the eng ine com-
pa rtment .
-Never sp ill fluids on a hot engine . These flu­
ids (such as the anti-freezing agent con­
tained i n the coolant) ca n ignite .
- Avoid short c ircuits in the electrical system .
-When working in the engine compa rtment,
remember that the radiator fan can switch
on even if the ignition is switched off, wh ich
increases the r isk of persona l injury .
-Never open the cap on the coolant expan­
sion tan k when t he engine is warm . The
coo ling system is under p ressure.
-To protect your face, hands , and a rms from
hot steam or coolant , cover the cap wit h a
large cloth when op ening .
-Do not remove the engine cover under any
circumstances. This increases the r isk of
burns .

Checking and Filling
Opening/closing the hood
The hood is released from inside the vehicle .
Fig. 265 Sect ion from th e driver's side footwell: release
l ever
F ig. 266 Rocker switc h under the hood
Read and foll ow all WARNINGS before checking
anyth ing in the eng ine compartment
~ page 318, Working in the engine comport­
ment .
Make sure the wiper arms are not raised up from
the windshield . Otherwise the pa int could be
damaged .
Opening the hood
Applies to vehicles w ith plug-in hybrid dr ive:
switch the ignition off before re leasing the hood
320
so that the gasoline engine does not start auto­
matically .
.,. With the drive r's door open, p ull the lever be­
low the instrument pane l in the d irec tion of the
arrow ~ fig. 265 .
... Raise the hood slightly c:> .&, .
... Press the rocker switch under the hood upward
<=:> fig. 266. This releases the catch .
... Open the hood .
Closing the hood
... Push the hood down unti l you override the
force of the strut.
... Let the hood fall lightly into the latch . Do not
press it in.
<=:> .&, .
A WARNING
-Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that yo u could
be burned. Wait unt il no steam or coolant is
escaping.
- For safety reasons, the hood m ust always be
closed securely while driv ing. Because of
this, always c hec k t he hood after closing i t
to make sure it is latched correctly. The
hood is latched if the front corners cannot
be lifted.
- If you no tice that the hood is not latched
while you are driving, stop immediate ly and
close it, because driving when the hood is not latched increases the risk of an accident .
-If the hood is not latched comp letely, it
could f ly up wh ile you are driving and ob­
struct your vision.

Checking and Filling
If the recommended engine oil is not available,
in an eme rg enc y you may add a maximum of 1
quart(! liter) of ACEA C3 or API SN engine oil
one tim e until the next oil change.
F or more information on the correct engine oil
for your vehicle, contact an authorized Audi dea l­
er or authorized Audi Service Facility . Have the oil
changed by an authori zed Audi dealer o r author­
ized Service Fac ility .
Audi re commend s
((#Castrol I llt/li{:t;'{g Frtw.:;-..·-..d.f'/,'JAL
Audi r ecommends using th e Lon g Lif e high ­
perf orm ance eng in e oil from Audi Genu in e
Parts .
Checking the engine oil level
The engine oil dipstick varies depending on the
engine type .
Fig . 268 Oil d ipsti ck: checking th e engine oil le vel (exa m­
p le )
Observe the safety precaut ions ¢.& in Working
in the engine compartment on page 318 .
.. Park your vehicle on a level surface.
.. Shut the engine off when it is warm .
.. Wait approx imately two m inutes .
.. Open the hood ¢ page 320 .
.. Remove the oi l dipstick¢ page 321, fig. 267,
wipe it off with a clean cloth and insert it a ll the
way in again .
.. Remove the o il dipstick again and then read the
oil
level ¢ table on page 322.
.. Add engine oil if necessary c:> page 323.
322
Areas on the o il dipstick 9 fig . 268 .
(D If the engine oil leve l is just before the
mark ing
(D , then engine oil must be added .
See¢@.
@ Do not add engine oil.
(D Note
- T he engine o il level must not be below the
ma rking
(D , because this increases the risk
of engine damage.
- After add ing engine oil, the oil leve l must
not be above the marking @, because this
increases the risk of catalytic converter and/
or engine damage . Do not start the engine .
Contact an authorized Audi dealer or au­
thorized Audi Service Facility to have excess eng ine oil extracted if necessary .
(D Tips
- The engine oil consumption may be up to
0.5 quart/600 miles (0.5 liter/1,000 km),
depending on driving style and operating
conditions. Consumpt io n may be h igher
dur ing the fi rst 3,000 mi les (5,000 km) . Be­
c ause of this , the eng ine o il level must be
che cked regularly.
It is best to check each
t ime you refuel your vehicle and before long
drives .
- In order to prov ide effective l ubrication and
cooling of interna l engine components, a ll
internal combustion engines consume a cer ­
tain amount of oil. O il consumption varies
from engine to engine and may change sig­ nificantly over the life of the engine. Typi­
cally, eng ines with a specif ied break-in peri­
od consume more oil during the break-in pe ­
riod than they consume after o il consump­
t ion has stabilized .
- Under normal condit ions, the rate of oil
cons umption depends on t he quality and
viscosity of the oil, the RPM (revo lutions per
mi nute) at which the engine is ope rated, the
ambien t temperature and road conditions .
Further factors are the amount of oi l dilu­
tion from water condensation or fuel resi­ due and the oxidation level of the oil. As any
eng ine is subject to wear as m ileage builds
Ii>-

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The term "vehicle battery" refers to the 12 Volt
batte ry in your vehicle.
Appl ies to: vehicles w ith plug-in hybrid drive: you
can find important informa tion abo ut yo ur high­
voltage battery in
r=> page 92.
Detail ed warning s for the vehicle battery :
~
Always wear eye protect ion .
&
Battery acid is high ly corrosive. Always
wea r protect ive g loves and eye protect ion .
.
®
Fire, spa rks, open flame and smoking are
forbidden .
A
A highly exp losive mixt ure of gases can
form when charging ba tte ries.
®
Always keep children far away from bat-
tery electrolyte and the battery .
~
Always follow the instructions in the oper -
ating manual.
A WARNING
All work on the battery or electrical system in
your vehicle can result in injuries, chemical burns, accidents or burns. Because of this, all
work m ust be perfo rmed
only by an author­
ized Aud i dea le r or autho rized Aud i Serv ice
Facili ty.
A WARNING
Cali fornia P roposi tion 65 Warn ing:
- Battery posts, termina ls and re lated acc es­
sories contain le ad and lead compounds,
c hem ica ls known to the St ate of C alifornia
to cause cance r and rep roductive problems.
Wash hands after handling.
(D Note
If the veh icle w ill be par ked for long periods
of t ime, pro tect it agains t the col d so that i t
w ill not be destroyed by "freezing"
q page 32 7, Charging the vehicle battery .
Checking and Filling
Charging the vehicle battery
Applies to: veh icles w ith vehicle battery in t he e ng in e com ­
partment
Fig . 272 En g in e co mpa rtm en t: c onnect ions for charge r
a nd j ump start c abl e
Applies to: vehicles w ith jump s ta rt point(+)
Fig . 2 73 Engin e compar tm ent: c onn ect io ns fo r charge r
a n d j ump s ta rt c able
Observe the safety precautions r=>page 318,
Working in the engine compartment .
Vehicles with plug-in hybrid drive*: r=> page 102,
Jump s tar t.
Requirement: only use chargers with a ma ximum
charging current of 30 amp s/14.8 Volt s.
The ve­
hicle battery cab les remain connected.
Depend ing on the engine, the battery is located
in the engine compartment or i n the l uggage
compartment. For vehicles w ith the battery in
the luggage compartment, a jump start point
that is also used for battery charg ing is located i n
the engine compartment . The battery is a lways
charged in the eng ine compartment. The g round
poin t
0 is always loca ted on the vehicle chass is .
.,. Read the warnings r=> .&.. in General warnings
about batteries on page 32 7
and r=> .&._.
.,. Switch off the ig nitio n and all electrical equ ip­
ment .
.,. Open the hood r=> page 320.
327

Check ing and F illing
~ Applies to: vehicles with the vehicle battery in
the engine compartment: open the battery cov­
er
¢ fig. 272 .
~ Applies to: vehicles with jump start point(+):
open the cover on the posi tive term inal
¢ fig . 273 .
~ Clamp the charger terminal clamps as instruct­
ed on the
p os itiv e t erminal (+ ) and only on the
bo dy ground p oin t(-).
~ Inse rt the powe r cable for the charg ing device
into the socket and switch the device on.
~ At the end of the charging process, switch the
charger off and pull the power cab le out of the
socket.
~ Remove the charger terminal clamps.
~ Applies to: vehicles with the vehicle battery in
the engine compartment: fold the cover back
on the battery correctly .
~ Applies to: vehicles with jump start point(+):
close t he cover on the positive term inal.
~ Close the hood ¢ page 320.
A WARNING
-A highly exp losive mixture of gases can form
when charging batteries . On ly charge the
vehicle battery in well -venti lated areas.
- A drained vehicle battery can freeze at tem ­
peratures around 32
QF (0 QC). A frozen or
thawed vehicle battery must not be charged
and must not be used anymore. If ice forms,
the battery housing can crack and battery electrolyte can leak out, which increases the
risk of a n explos ion and chemical burns .
Contact an autho rized Aud i deale r or au ­
tho rized Aud i Serv ice Facility fo r more info r­
mation .
-Do not connect o r disconne ct the c ha rg ing
cable while charg ing beca use th is increases
the risk of an exp losion.
(D Tips
-Only charge the vehicle battery through the
con nections in t he e ng ine compartment.
-Read all of the manufacture r's instructions
fo r th e cha rger befo re charg ing t he ve hicle
battery.
32 8
Windshield washer
system
Fig . 274 En gin e compar tmen t: w inds hield was he r fl ui d
cove r (example)
Observe the safety precautions ¢ page 318 ,
Working in the engine compartment .
M N
-N
"' "' m
The windshield washer fluid reservo ir W contains
the cleaning solution for the w indshield and the
headlight washer system*
¢ page 321, fig . 267 .
The reservoir capacity can be found in
¢page 382.
To reduce the risk of lime scale depos its on the
sp ray nozzles, use clean water with low amounts
of calcium . Always add w indow cleaner to the wa­
ter . When the outside temperatures are cold , an
ant i-freez ing agent sho uld be added to t he wate r
so that it does no t freeze.
@ Note
-Th e concentration of ant i-freez ing agent
must be adjusted to t he ve hicle operat ing
c ondi tions i n the respective clima te . A con ­
centration t hat is too high can lead to vehi ­
cle damage .
-Never add radia to r an ti- free ze o r o ther ad di­
t ives to the washer fluid.
-Do not use a glass clea ner th at conta ins
paint so lvents, because t his could damage
the paint.
Service interval display
The service interval display detects when your ve ­
hicle is due for service .
The service interval display works in two stages: .,.