2015 AUDI S3 coolant reservoir

220 Checking and Filling
Gasoline engine compartment overview
The most important check points.
Fig. 159 Typical locat ion of th e reservo ir, engine oi l d ipstick, and engine oil filler opening
CD Coolant expansion tank ( ... L) ... 226 The eng ine oi l filler opening and the d ipstick
@ Engine oil dipstick
...........
223 (items® and @)¢ fig. 159 may be located in
® E
ngine oi l filler open ing
('t=r.) 223 a different area depending on engine version.
© Brake fluid reservoir ((0) .. .. . 227 A WARNING
® Battery(+) under a cover 229 .. ... -
® Body ground point(-) Read
and following the WARNINGS before
checking anyth ing in the eng ine com part-
(j) Washer fluid reservoir(<$) . ... 232 ment ¢ page 217.
® Fuse housing ............. .. 276

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Checking and Fillin g 221
Diesel engine compartment overview
The most important check points .
Fig. 160 Typical locat ion of th e reservo ir, engine oil dip stick, and engine oil filler opening
(D Coolant expansion tank (J-) .. .
@
®
©
®
®
0
®
Eng ine oi l dipstick .......... .
E ng ine o il filler opening
('!=r.) .
Brake fluid reservoir ((0))
Battery(+) under a cover .....
B ody ground point(-)
Washer f luid reservoir(~)
F use housing .............. .
226
223
223
227
229
232
276
The engine oil filler opening and the dipstick
(items @ and @)¢
fig. 160 may be located in
a different area depending on eng ine ve rsion .
A WARNING
Read and following the WARN INGS before
checking anything in the engine compa rt­
ment
¢page 217.
Engine oil
Engine oil specifications
The engine oil used must conform to exact
specifications .
The service interva l disp lay in the instrument
cluster of yo ur vehicle will inform you when it
is time for a n oil change . We recomme nd that
you have your oil changed by an author ized
Audi Se rv ice Advisor .
If you have to top off the o il between oi l
c hanges, use the Audi o il quality sta ndard
spec ified in the tab le .
Audi oil quality standard
Gasoline
VW 502 00 or
engine vw 504 00
Diesel vw 507 00
eng ine
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Radiator fan
The radiator fan switches on automatically by
itself
An auxiliary electric radiator fan switches on
and off depending on coolan t temperature
and other vehicle operating conditions .
After you switch the engine off, the auxiliary
fan can continue running for up to 10 minutes
- even with the ignition off. It can even switch
on again later by itself<=>.& , if
- the temperature of the engine coolant rises
due to the heat build-up from the engine in
the engine compartment, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
A WARNING
-To reduce the risk of personal injury nev­
er touch the radiator fan.
- The auxiliary electric fan is temperature
controlled and can switch on suddenly
even when the engine is not running.
- The auxiliary radiator fan switches on au­
tomatically when the engine coolant
reaches a certain temperature and will
continue to run until the coolant temper­
ature drops.
Brake fluid
Checking brake fluid level
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Fig. 165 Engine compa rtment: cove r on the brake fluid
rese rvoir
Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS r::;, page 217 .
Checking and Filling 22 7
.. Read the brake fluid level from the brake
fluid reservoir <=>
fig. 165, <=> page 220,
fig. 159.
T he brake fluid level must be be­
tween the "MIN" and "MAX" markings.
The location of the brake fluid reservoir can be seen in the engine compartment illustration
<=>page 220.
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads. This is not cause for alarm.
If the brake fluid level falls considerably be­
low the "MIN" mark, the brake warning/indi­
cator light . (U.S. models)
I. (Canadian
models) will come on
c:> page 18 . Do not con­
tinue to operate the vehicle. The complete
brake system should be thoroughly checked
by an authorized Audi dealer or other quali­
fied facility and the cause corrected . If the
brake fluid level is too low, the brake warning/
indicator light will illuminate. Contact an au­
thorized Audi dealer
immediately.
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician.
Brake fluid absorbs moisture from the air . If
the water content in the brake fluid is too
high, corrosion in the brake system may result
after a period of time. The boiling point of the
brake fluid will also decrease considerably and
decrease braking performance.
Therefore, the brake fluid must be changed
every two years . Always use new brake fluid
which conforms to Federal Motor Vehicle
Standard "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficult to
reach, therefore, we recommend that you
have the brake fluid changed by your author­
ized
Audi dealer. Your dealer has the correct
tools, the right brake fluid and the know-how
to do this for you.
II>-

232 Check ing and F illin g
the time your vehicle was delivered) . Specifi­
cations are listed on the battery housing. Yo ur
author ized dealer must code the battery in
the energy management system to enable you
to use the energy management functions cor­ rectly after replac ing the battery .
The new battery must have the same capacity,
voltage (12-volts), amperage, construct ion
and plug sealing.
When insta lling the battery, make sure the ig­
n ition and all e lectr ica l consumers are sw itch­
ed off.
Make sure the venti lation hose on the side
of the battery is connected, otherwise
fumes or battery ac id can leak out.
@ For the sake of the environment
Because of the problem of proper disposa l
of a battery, we recommend your author­
ized Audi dealer change the battery for
you. Batter ies contain su lfuric ac id and
lead and must always be disposed of prop ­
erly i n compliance w ith all environmental
regu lations . D ispos ing of vehicle batteries
improper ly is very dangerous to t he envi­
ronmen t.
Windshield washer
container
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F ig . 167 Eng ine compa rt m ent: cove r on the w indshi eld
an d h ead ligh t* washer f lu id re servo ir
The washer f luid container is marked with the
symbo l won its cap ¢
fig. 167, ¢ page 220,
fig. 159.
.. Before you check anything in the engine
compartment,
always read and heed all
WARNINGS ¢ page 217 .
.. Lift the fi ller cap tongue to add washer flu­
id. You can f ill the container to the top.
.. Press the cap back onto the filler neck afte r
filling the conta iner .
You can find the reservo ir
capacit y in the table
in c:>
page 288.
Clean water should be used when filling up . If
poss ib le, use soft water to prevent scaling on
washer jets . Always add a g lass cleaner solu­
t ion (with frost protection in the w inter) .
(D Note
- Do not mix engine coolant ant ifreeze or
any other additives to fill up the w ind­
shield washer reservoir .
- Do not use a glass cleaner that contains
paint so lvents, there is a risk of damag­
ing the paint.