2011 AUDI A3 cooling

IJIII Checking and filling
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Please be sure to consu lt with your aut horized Aud i dea ler for infor­
m ation and availabili ty of the proper engine oil fo r yo ur vehicle's
diesel engine and fo r the latest technical informat ion .
Beca use t his spec ia l engine o il may not be avai lab le when need it, we
s tr ong ly recommend t hat yo u alw ays car ry with yo u extr a qu art (liter)
of oil that conforms to A ud i oil specificat ion VW 507 00, in case you
have to top off o il wh ile on the road.
& WARNING
Failure to use engine oil for your diesel engine that expressly
conforms to Audi oil specification VW 507 00 can cause engine
failure on the highway that can cau se a cra sh and serious per sonal
injury.
• Never use any amount of engine oil in the diesel engine that
does not conform to Audi oil specification VW 507 00 .
• Always carry with you an extra quart (liter ) of engine oil that
conforms to Audi oil specification VW 507 00
in case you must top
off the oil while on the road .
& WARNING
Improperly stored items can become airborne missiles, flying
through the vehicle causing serious personal injury in the event of
hard braking or an accident. To help reduce the risk of serious
personal injury:
• Always store extra quart (liter ) of engine oil for your diesel
engine in its original oil container that is securely closed in the
luggage compartment. Make sure the container is securely stored
and mounted.
0 Note
• If you use engine oil that does not express ly co nform to A udi o il
spe cifica tion VW 507 00, very ser ious and ve ry expens ive da mage to
your vehicle's eng ine will occ ur. Eng ine damage caused by using the wrong engine oil
is not covered by your New Vehicle Lim ited
W arran ty.
• Not all comme rcia lly available oils conform to t his very rigid Audi
oil qua lity stand ard eve n th ough they may be sy nth et ic -b as ed and
have the same v iscosity .•
Engine cooling system
Coolant
The engine coo lant per forms t wo functions: i t keeps the
engin e fro m ove rhea ting and i t pro tec ts th e engine from
f ree zin g in t he win ter .
The cooling system is sealed and genera lly requ ires little attention.
Th e cooling system has been filled at the factory wit h a permanent
coo lant which does not need to be c hanged. The coolant cons ists of a
mixt ure of water an d the manufacturer's glyco l-basedcoolant ad di­
tive G12 ++ a ntifree ze with a nticorros ion addit ives (50% fo r USA
mode ls; 60% for Canadian models). This mixture both ass ures the
nece ssary frost protec tion and p rotects meta l components in the
eng ine's cooling system from corrosion and scaling. It also raises the
boiling poin t of the co olant.
Do not red uce the co ncent ration of the coolant in the summer by
add ing p la in water.
The proportion of coolant additive must be at
least 50 % but not more than 60%
to ma inta in an tifreeze protectio n
and coo ling efficiency. If the coolant frost protect ion is too low, t he
coo lant co uld free ze and damage t he veh icle h eating and eng ine
coo ling system.
F or ye ar-round drivi ng, an tifr ee ze is add ed at t he fa ctory for tempe r­
atures dow n to:
• - 31°F( -35°C)USA
• -40 °F ( -40 °C) Canada .

Checking and filling --------------------=------=:;______,.J VPII
You can mix the G12++ coolant additive with other additives G12+ or
Gl2. Always check with yo ur authorized Aud i dealer.
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS =>
& in "W orking in the engine
co mpartment " on
page 226.
0 Note
• Before winter sets in, have the coolan t checked to see if the
coolant additive in your vehicle is sufficient to meet the clima te
conditions. This is especially important if you live in a region where
the winter is extremely cold . If necessary, increase the proportion of
coo lant additive to 60%.
• When adding coolant additive to your cooling system, remember :
- We recommend using only coolant additive
G12++ (check the
label) for your vehicle. This coolant additive is available at autho­
rized Audi dealers. Other types of antifreeze can significantly
reduce corrosion protection . The resulting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sealant to your vehicle's
eng ine coolant. Adding radiator repair fluid may adversely affect the
function and performance of your cooling system and could result in
damage not covered by your New Vehicle Limited Warranty. •
Vehicle OP-eration
Checking the engine coolant level
The engine coolant level can be checked with a quick
glance.
Fig. 166 Engine
co mpartm ent: cool ant
expansion tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS => & in "Working in
the engine compartment" on
page 226.
- Turn off the ignition.
- Read the engine coolant level from the coolant expansion
tank=> fig. 166 . With a cold engine, the coolant level
should be between the "min" and "max" markings. When
the engine is warm, the level may be slightly above the
"max" marking .
The location of the coolant expans ion tank can be seen in the engine
compartment illustration=>
page 227.
To obtain an accurate reading, the engine must be sw itched off.
The expans ion tank in your vehicle is equipped with an electric coolant
level sensor.
When the coolant level is too low, the warn ing light in the Auto-Check
System =>
page 32 will blink until you add coolant and the level has
been restored to normal. Even though there is an elect ric coolant
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Vehicle care Do-it-yourselt service iTechnical data

___ C_ h_ e_c _k _i _ n _g ~ a_n _d_ f_il _l_in _ g _________________________________________ _
level sensor, we still recommend you check the coolant leve l from
ti me to time.
Coolant loss
Coolan t loss may ind ic a te a leak in the coo ling sys tem. In the event of
coo lant loss, the cooli ng system should be inspected immed iately by
your au thor ized A udi dealer.
It is no t enough merely to add coolan t.
In a
s ealed system, losses can occur only if the boiling point of the
coo lant is exceeded as a res ult of overheating .
(D Note
Do not add any type of radiator leak sealant to yo ur vehicle's engine
c oo lant. Addi ng radia tor repa ir fluid m ay adverse ly affect the fun c­
tion and perfo rmance of your cooling system and could result in
damage not cove red by yo ur New Vehi cle Lim ited Warranty .•
Adding coolant
B e very careful when adding engine coolant.
Before you check anyt hing in the eng ine compartment ,
always read and heed all WARNINGS=> & in " Working i n
the e ngine compartment" on page
226.
-Tur n off the eng ine.
- Let t he engi ne c ool d ow n.
- Place a thick rag over the coolant expansion tank
=> pa ge 235, fig . 166 and carefully twist t he cap cou nte r­
clockwis e
=> &.
- Add coo lant.
- Tw ist the ca p on aga in
tightly .
Replacement eng ine coolant must conform to exact spec ificat ions
=> page 234, " Coolant" . Even in a n emergency, if coolant additive
Gl2 ++. Gl2+ or Gl2 is not available , do not use a d ifferent addit ive .
Use pla in w ate r ins tead until you can ge t the cor rect addi tive and can
restore the co rrect ratio . This sho uld be done as soon as possib le .
If you have lost a considerable amount of coolant, then you s houl d
ad d c old antifree ze and cold water only when the engine is cold .
Always use
new engine coo la nt w hen refilling .
Do not fill coolant above the "M AX" mark. Excess coo lant will be
forced out th rough the p ress ure relief va lve in the cap w hen the
eng ine becomes hot.
& WARNING
• The cooling system is under pressure and can get very hot.
Reduce the risk of scalding from hot coolant by following these
steps.
-Turn off the engine and allow it to cool down.
- Protect your face , hands and arms from escaping fluid and
steam by covering the cap with a large, thick rag.
- Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light , downward pressure on the top
of the cap.
- To avoid being burned, do not spill antifreeze or coolant on
the exhaust system or hot engine parts . Under certain condi­
tions, the ethylen e gly col in engine coolant can catch fire .
• Antifreeze i s poi sonou s. Always store antifreeze in it s original
container and well out of the reach of children.
• If you drain the coolant , it mu st be caught and safely stored in
a p roper container clearly marked "poison ".
(D Note
• Coolant pollutes the environment and could cause an engine fire.
E xcess coolant w ill be forced o ut thro ugh the pressure relie f va lve in
the cap when the e ngine becomes hot .
~

------------------------------------------~A~ LE P '.!:h ~a~ b~e~ t~ic ~a~ l~ in~ d ~ e~x ~ _lffl'II
Coolant system ....... ... .. .. .. .. .. . 234
Cooling System
Expansion tank .................. 235
Cru ise control .............. ... ..... 110
Changing speed ................. . 111
Presetting your speed .......... .. . 111
Switching off ............. .. .... . 112
Switching on ........... ......... 110
Warning/indicator lights ... .... .... 14
Cup holder ............ ...... .. .. .. .. 89
Cup holders front ........ ...... .. .. .. .. .. .. .. 89
Current fuel mileage ................ .. 21
D
Damp ing
See Audi magnetic ride ......... ... 112
Data ....... .... ...... .. .... .. .. .. . 296
Data recorder ................. .. ... 188
Date display .. .. .. ............... .... . 9
Daytime running lights ............... . S6
Daytime running lights (Canada) ........ 56
Declaration of compliance Cell phone package ............ .. . 303
Electronic immobilizer ... .. .. .. .. . 303
Homel ink® un iversal remote control . 303
Remote control key ............... 303
Ti re pressure monitoring system ... . 303
def What does this mean when it appears in
the trip odometer display? ......... 10
Defective light bulb warn ing . .. .. .. .. .. 36
Controls and equip­
ment Safety first
Defogg
ing the windows ....... .... ... . 98
Defrosting the windows ............... 98
Defrosting/defogging w indows ..... ... 101
Determining correct load limit . ...... .. 254
Diesel engine Add ing engine oil .. .... .. ......... 233
Changing engine oil .. .. ........... 233
Engine oil . ... .... .... ........... 233
Diesel fuel .. .................... ... 220
Diesel particulate filter. . . . . . . . . . . 34, 199
Digital clock . .. ............. .. .... .... 9
Setting the time ............ ....... 9
Digital compass . ................ ... . 71
Dimensions ..... .... ............... 295
Dipstick Reading the dipstick p roperly ..... .. 231
Direct Shift Gearbox Emergency release ............... 121
Distance .... .... .. .... .............. 22
Doors, power locks .... ... .. .. ........ 43
Driver information ................... 31
Driver Information System Menu display ............ ......... 22
Driver information system
Gearshift indicator ............. .. . 19
Menu button . ....... .... .. .. .. .. . 24
Open door or front lid wa rning .. .. .. . 18
Outside temperature display ........ 18
Red symbols ................... ... 30
Service interval display ............. 27
Setting . ................ .. .. .. ... 2s
Sound system display .. .. .......... 18 Trip computer
... ... ..... ... . ... .. 21
yellow symbols .. ................ . 30
Driver seat
See Seating position ...... ..... ... 126
Driving safely .. .. .. .. ............. . 124
Driving through water .... .... .. .. .. . 198
Duplicate key ...... . .. ............... 38
E
Efficiency program . ... .. .. ........... 25
Fuel economy messages ............ 26
Other equipment ... ............... 26
Elapsed time ... ...... ............. .. 21
Electrically heated front seats .. .... .. . 103
Electro-mechanical power assist ... 17, 193
Electronic differential lock (EDL) How the system works .. .... ...... 189
Warning/indicator lights ... .. ... ... 16
Electronic immobilizer . . . . . . . . . . . . 10, 40
Electronic power control
EPC warning/indicator light ......... 13
Electronic speed limiter ........ ...... . 20
Electronic Stability Program ... .... .. . 188
Electronic stabilization program (ESP)
Warning/indicator lights ..... .. .. .. 14
Emergency flasher Warning/indicator lights ... .. ... ... 14
Emergency flashers ... .. .. .... ....... 59
Emergency operation panoramic sliding sunroof ........ .. 53
Rear lid .......................... 46
Vehicle operation Vehicle care Do-it-yourself service Technical data