2018 AUDI S3 SEDAN coolant

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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

Trail er to wing
Trailer towing
Driving with a trailer
General information
Your veh icle is primari ly intended for transport­
ing peop le and luggage. Howeve r, if you dr ive
with a tra iler , follow the techn ica l requirements ,
the operation and driving tips, and the lega l reg ­
ulations.
Dr iving w ith a trailer affects the vehicle 's fuel
consumpt ion, performance and wear. It a lso re­
quires higher concentration from the driver .
A WARNING
Do not transport any people in a trailer due to
the risk of fatal injury .
Technical requirements
Certain requirements must be met when towing
a trailer.
Trailer hitch
Only use a trailer hitch with a removab le ball
h itch mount and ball h itch. The tra ile r hitc h must
be pe rm it t ed for the vehicle, the tra iler and the
permitted tota l weight of the trailer being
pu lled . Above all, it must be secure ly and safe ly
attached to the vehicle trailer.
Never mo unt a t rai ler hitch on the bumper. The
trai ler hitc h must be mounted in a way that does
not impair the function of the bumper. Do not
make any changes to the exhaust system and the
brake system.
Check regu larly if the trai ler hitc h is securely
mounted . A lways follow the instructions given by
the trai ler hitch manufacturer .
Trailer brakes
If t he tra ile r has its own bra ke system, then fol­
low the manufacturer specifica tions. Howeve r,
the brake system on the trai ler must never be
connected to the vehicle brake system.
118
Engine cooling system
D riving w ith a tra ile r means a higher load on t he
engine and the cooling sys tem. The coo ling sys­
tem must be designed for additiona l load and
contain enoug h
coolant ¢@ .
@ Note
Longer incl ines cannot be driven wi tho ut a
suitab le cooling system, especia lly if the out ­
side temperatures are high . ot herwise, this
i ncreases the risk of eng ine damage.
Operating instructions
Several things must be noted when towing a
trailer.
Towing capacity
Yo ur vehicle can only be ope ra ted with class 1 or
class 2 trai le rs.
Load distribution
Poor cargo load and distr ib ution can negatively
i mpact vehicle handling . T o have the lowest im­
pact as poss ible, load the tra ile r according to
t h ese cr ite ria :
- Store objects preferably in the vehicle luggage
compartment . The vehicle should a lways carry
the heaviest poss ib le load and the trailer
should have t he lig htest poss ible load .
- Dist ribute the load in the t railer so that the
heavy objects a re as close to the axle as poss i­
ble.
- Secu re objects from s lid ing o ut of place.
- Ut il ize the maximum permitted tongue we ight
if poss ible .
Tire s
Set the tire pressure on your vehicle for a "full
load"; see the tire pressure
st icker ¢ page 341.
If necessary, also adjust the t ire pressure on the
trailer acco rding to the manufactu rer's recom­
mendat ion.
Winter tires should be mounted on the vehicle and on the trailer during w inter temperatures .

Outside mirrors
If yo u cannot see the traffic behind the tra iler
with the standard exterior mirrors, then you
must attach additiona l exterior mirrors . Adj ust
them so you have a sufficient visibility behind
you .
Exterior lighting
Follow the legal regulat ions regard ing the light­
ing equipment on your trailer . Contact an author ­
ized Audi dealer or authorized Audi Service Facili­
ty for more information.
Before starting to drive, check all lighti ng equip­
ment on the hitched trailer.
The headlight range contro l adjusts automatical­
l y to the light range of the headl ights.
Safety chains
Make sure the safety chains are correctly applied
when pull ing a trailer . The chains should hang
enough so that the trailer can dr ive around
curves. However, they must not touch the
g ro und .
(D Tips
-Use chocks whe n parking on incl ines if the
trailer is load ed.
- We recommend also hav ing the veh icle in­
spected between the inspect ion intervals if
you are towing a trailer frequently.
- Avo id driving with a trailer during the vehi­
cle break- in period .
Driving with a trailer
Driving with a trailer requires extra caution.
Speed
Adhere to the legal speed limits. Follow the legal
regulations specific to the country.
As the speed increases, the driving stability of
the trai ler decreases. Therefore you should not
exceed the maximum legal speed limit when
u. there are unfavorable road, weather and/or wind 00
~ conditions . This especially applies when driving
~ downhill.
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Trailer towing
You m ust always reduce your speed as soon as
you notice even the slightest swinging motion of
the tra iler. Never try to "stra ighten out" the tra il­
er by acce lerating.
T he weight distribution is very poor if the vehicle
is empty and the trai ler is loaded . However if you
must drive under these circumstances, then dr ive
especially slowly .
Brakes
Brake in a timely manner. Downshift before driv ­
ing down hill so that t he engine can assist with
braking ~.&. .
When using a trailer w it h overrun brakes, first
brake gently then quickly. This reduces the r isk of
jerking while braking if the trailer wheels lock up .
Engine coolant temperature
Pay attention specifically to the coo lant tempera­
ture display when there are high outside temper­
a tur es, and when driving on long inclines
~page 11. Shift to a hig her gear in a timely man­
ner .
A WARNING
= -
Constant braking causes the brakes to over-
heat and substantially reduces braking per­
formance, increases braking distance or caus­
es complete failure of the brake system.
119

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.

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Checking and Filling
Engine compartment overview
The most important check points .
Fig . 267 Typical location of the reservoi r, engine oil d ipst ick, and engine oil f iller open ing
(D Coolant expans ion tank (-L) ¢ page 325
@ E ngine oi l dipstick¢ page 322
® Engine oil filler opening ("e::r.) ¢ page 322
@ Eng ine oi l label* w ith VW standard
¢ page 321
® Brake fluid reservoir (0}) ¢ page 326
@ Applies to: vehicles w ith jump start point(+):
jump start point(+) under a cover
¢page 327, ¢page 375
0 Applies to: vehicles with the vehicle battery
in the engine compartment: vehicle bat­
tery(+) under the battery
cover¢ page 327,
¢page375
@ Bodygroundpoint(-) ¢page327,
¢ page375
® Washer fluid reservoir (0) ¢ page 328
@ Fuse housing ¢ page 3 71
The oil dipstick( @) and the engine oil fi ller
opening( @)¢ fig. 267 may be located in differ- ent places within the engine compartment de­
pending on the engine version .
,8. WARNING
Read and follow a ll WARNINGS before check­
i ng anything in the engine compartment
¢page 318 .
(D Tips
Applies to: vehicles with p lug-in hybrid dr ive:
note the informa tion for the coo lant expan­
s io n t ank
in¢ page 102 and for the vehicle
batte ry (+) in
¢page 102 .
Engine oil
If the engine oil level is too low
If you need to add engine oil, use an o il that i s
listed on the st icker .
The sticker is located at the
front of the eng ine
compartment ¢ page 321,
fig. 267.
321

Check ing and F illing
Changing the engine oil
We recommend that have your oil changed by an
authorized Audi dealer or a qualified service sta­ tion.
Before you check anyth ing in the eng ine compart­
ment,
a lw ays re ad and h eed all WARNING S c> .&
in Working in the engine compartment on
page 318.
The engine oil must be changed accord ing to the
intervals specif ied in your Warranty
& Mainte­
nance booklet. This is very impo rtant because the
lubricat ing p ropert ies of o il d iminish gradually
du ring normal vehicle use.
Under some c ircumstances the eng ine o il should
be changed more frequently . Change oil more of­
ten if you d rive most ly short distances, ope rate
the vehicle in dusty areas or under predominant ly
stop -and-go traffic cond it ions, o r have yo ur vehi ­
cle where temperatures remain below freezing
for extended periods .
Detergent additives in the oil will make fresh o il
look da rk afte r th e e ng ine
has been run ning fo r a
short time. This is norma l and is not a reason to
change the oil more often than recommended.
Because of the prob lem of p roper d isposa l, along
with the special tools and necessa ry expe rt ise re ­
quired, we strong ly recommend that you have
your oil changed by an authorized
Audi dealer or
a qualified service station .
If you choo se to change your oil your self , please
note the fo llowing important information:
A WARNING
T o red uce the risk of personal injury if you
must c hange the engine oil in your veh icle
yourself:
- Wear eye protection .
-To reduce the risk of bu rns from ho t engine
oi l, let the engine cool down to the touch .
-
-When removing the o il drain pl ug with you r
fingers, stay as far away as possible . A lways
keep your forearm paralle l to the ground to
help prevent hot oi l from running down your
arm.
324
- Drain the oil into a container designed for
this purpose, one large enough to hold at
least the tota l amount of oil in your engine.
- Engine oil is poisonous. Keep it well out of
the reach of children.
- Continuous contact with used engine oi l is
harmf ul to your skin. Always protect your
skin by washing oil off thoroughly with soap
and water .
@ Note
Never mix oil additives with your engine oil.
These additives can damage your engine and
adverse ly affect your Audi Limited New Vehi­
cle Warranty .
{® For the sake of the environment
- Before chang ing your oi l, first make sure
you know where you can properly dispose of
the used oil.
- Always dispose of used eng ine o il properly.
Do not dump it on garden so il, wooded
areas, into open streams or down sewage
dra ins.
- Recycle used eng ine o il by tak ing it to a used
eng ine oi l collect ion fac il ity in your area, or
contact a service station .
Cooling system
Coolant
The engine cooling system is filled w ith a mixture
of purified water and coolant additive at the fac­
tory. This coolant must not be not changed.
The coo lant level is monitored thro ugh
the . in­
dicator light
c> page 25. However, we do recom­
mend occas ionally checking the coolant leve l
manually.
If you must add coo lant, use a mixture of water
and coolant additive . Mix ing the coo lant add itive
with dist illed water is recommended.
1111-

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Coolant additive
The coolant additive is made of anti-freezing and
corrosion protection agents. Only use the follow ­
ing coolant additives . These additives may be
mixed with each other .
Coolant additive Specification
Gl3 TL 774 J
Gl2++ TL 774 G
The amount of coo lant add itive that needs to be
mixed with water depends on the climate where
the vehicle will be operated .
If the coolant addi­
tive percentage is too low, the coolant can freeze
and damage the engi ne.
Coolant Freeze protec-
additive tion
Warm min
.40% m in. -13 ° F
regions (-25 °C)
max. 45%
Cold min. 50% max . -40 °F
reg ions (-40 °C)
max. 55%
(D Note
- Before t he start of winter, have an author­
i zed Audi dealer or author ized Audi Se rvice
Facil ity check if the coolant additive in yo ur
vehicle matches the percentage appropriate
for the climate . Th is is especially important
when driving in co lder climates .
- If the appropriate coolant additive is not available in an emergency, do not add any
other additive. You co uld damage the en­
gine. If this happens, only use water and re­
store the correct mixture ratio with the
spec ified coolant additive as soon as possi­
ble .
- Only refill with new coo lant .
- Radiator sealant must not be mixed with
the coolant.
@ Tips
App lies to: RS models: In certain weather
conditions, moisture such as rain or snow may
evaporate on the rad iator after stopping the
Chec king and Filling
vehicle . This may cause s team to escape from
the front of the vehicle .
Adding coolant
Fig . 270 E ng in e co mpa rtment: ma rkings o n th e coo lant
expansio n
tan k
Observe the safety precautions r:::;, page 318,
Working in the engine compartment .
Checking the engin e coolant level
.,. Park the vehicle o n a level surface.
.,. Switch t he ignit ion off.
.,. Read the coolant level on the coolant expansion
tank
r:::;, fig. 2 70. The coolant level must be be­
tween the markings when the eng ine in cold .
W hen the eng ine is warm it can be slig htly
above the upper marking.
Adding coolant
Applies to: vehicles with plug-in hybrid drive:
your vehicle has two coolant expans ion tanks
that are separate from each other. The smaller of
the two expansion tanks must not be opened
r:::;, page 102. Read and follow the important safe­
ty preca utions
r:::;, .&. in Coolant on page 103 .
Requirement: there must be a residua l amount of
coolant in the expansion tank
c::> (D .
.,. Let the eng ine cool down.
.,. Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
c::> .&_ .
.,. Add coo lant m ixed in the cor rect ra tio
r:::;, page 324 up to the upper m arking .
.,. Make sure that the f lu id leve l remains stab le.
Ad d mo re coolant if necessa ry.
.,. Close the cap securely.
325