2009 AUDI TT COUPE cooling

Checking and filling -
---------------------=----"=---------
reduce corrosion protection. The resu lting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sealant to your vehicle's
engine coolant. Adding radiator repair fluid may adverse ly affect the
function and performance of your cooling system and cou ld result
in damage not covered by your New Vehicle Limited Warranty. •
Checking the engine coolant level
The engine coolant level can be checked with a quick
gla nce .
Fig . 142 Engine
co mp artm ent : coo lan t
e xpa nsion t ank
Before you check anything in the engine compartment,
always read and heed all WARNINGS=> & in "Working in
the engine compa rtment" on
page 217.
- Switch the ignition of f.
- Read the coo lant l eve l at the coo lant exp ansio n tank
==> fig. 142. With a col d e ngine, it must b e above the
"min" mar k. Wit h a hot engine, it can be a little above t he
indicated range.
The location of the coolant expansion tank can be seen in the
engine compartment i llustration. To obtain an accurate reading, the engine must be switched off.
The expansion tank in your vehic
le is equipped with an e lectric
coolant level sensor.
When the coolant leve l is too low, the warning light in the Auto ­
Check System =>
page 34 will blink un til you add coolant and the
level has been restored to normal. Even though there is an e lectric
coo la n t level sensor, we still recommend you check the coolant level
from time to time .
Coolant loss
Coolant loss may indicate a leak in the cooling system . In the event
of coo lant loss, the co oling sys tem shou ld be i nspected immedi­
ate ly by your authorized Audi dealer . It is not enough merely to add
coo lant .
In a
sealed system , losses can occur only if the boiling point of the
coolant is exceeded as a result of overheating .
0 Note
Do not add any type of radiator leak sea lant to your vehicle's engine
coolant. Adding rad iator repair fluid may adversely affect the func ­
tion and performance of your coo ling system and could resu lt in
damage not covered by your New Vehic le Limited Warra nty. •
Adding coo lant
Be very careful when adding engine coolant.
Before you check anything in the engine compartment,
always read and heed all WARNINGS==> & in "Working in
the engine compartment" on
page 217 .
-Turn off the engin e.
- Let the engine cool down.
Vehic le care I I irechnical data

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
-Pla ce a t hick ra g o ver the coola nt e xpansion tank
=>
page 225, fi g. 142 an d carefully tw ist the c ap counter ­
cl ockw ise=> &.
- Add coo lan t.
- Twist the cap on again
tightly .
Replacement engine coolant must conform to exact specifications
=>
page 224, "C oolant" . Even in an emerge ncy, if coo lant add it ive
G 12+ +, G 12+ or G12 is not availab le, do
not use a different additive.
Use p lain water instead until you ca n get the c orrec t addit ive and
can restore the correct ratio. This should be done as soon as possible.
If you have lost a considerable amount o f coo lant, then you should
add co ld antifreeze and cold water only when the engine is cold.
A lways use
new e ngine c oolan t when refil ling .
Do not fill coolant above the "MAX" mark. Excess coolant will be
forced ou t through the pressure relief va lve in the cap when the
engine becomes hot.
& WARNING
• The cooling sy stem is under pre ssure and can get very hot .
Reduce the risk of scalding from hot coolant by following these
s teps.
- Turn off the engine and allo w it to cool down .
- Protect your face, hands and arms from esc aping fluid and
steam by covering the cap with a large , thick rag .
- Turn the cap slo wly and very carefully in a counter -clockwise
dire ction while applying light , downward pressure on the top
of the cap .
- To avoid being burned, do not spill antifreeze or coolant on
the e xhaust system or hot engine parts . Under certain condi ­
tions, the ethylene glycol in engine coolant can catch fire .
& WARNING (continued )
• Antifreeze is poi sonous. Always store antifreeze in its original
container and well out of the re ach of children .
• If you drain the coolant , it must be caught and safely stored in
a proper container clearly marked "poison ".
0 Note
• Coo lant po llutes the environment and could cause an engine
fire. Excess coolant will be forced out through the pressure re lief
va lve in the cap when the engine becomes hot.
• If , in an eme rgency, o nly wa te r can be added, the correct rat io
between water and antifreeze=>
page 224 must be restored as soon
as possib le .
ffi For the sake of the environment
Drained coolant should not be reused. Always dispose of used
coo lant whi le observ ing all environmen tal regulat io n s. •
Radiator fan
The radi ator f an s witches on au tomati cally by itself.
T he e lectric radiator fan is control led bythe rmoswitches that switch
on and off depending on coolant and engine compartment temper ­
atures.
An auxiliary electric radiator fan* switches on and off depending on
coo la nt tempe rature a nd other veh ic le operati on cond itio ns.
After you switch the engine off, the aux iliary fan can continue
running for up to 10 m inutes -even with the ignition off. It can even
sw itch o n again later by itself=> & , if
• the temperature of the engine coo lant rises due to the heat
b ui ld-up fro m the eng ine in the eng ine co m partment, or

______________________________________________ A_ l_,_ p _h_ a_ b_e _ t_i c_ a_l _in _ d_e _ x __ lllll
Daytime running lights .. ..... .. .... ... 53
Daytime running lights (Canada) . .... .. 53
Declaration of compliance Cell phone package ............... 296
Electronic immob ilizer . .... ... .... 296
Homelink® universal remote control 296
Remote control key . ... .. .... .... . 296
Tire pressure monitoring sys tem ... 296
de f
What does this mean when it appears in
the trip odometer display? .. ....... 14
Defect ive light bulb warning ...... .... . 36
Defrosting the windows .. .......... ... 88
Determining correct load lim it ... ... .. 243
Digital clock .... .... .... .... ... .... .. 13
Setting the time ................... 13
D igital compass . ...... ... ...... .... .. 67
Dimensions ... .. .... .... ... .... .... 290
Dipstick Reading the dipstick properly
Di rect Shift Gearbox 221
Emergency release . . . . . . . . . . . . . . . 106
Distance .. ...... .... .... ... .... .... . 26
Driver information ..... ... .. .... ..... . 33
Driver information system
Gearshift indicator ... .... .... .... .. 23
Menu button ..................... 28
Menu display . ... .... ...... .... ... 27
Open door or front lid warning ...... 22
Outside temperature display ....... . 22
Red symbols .. .... .... ... ... ... .. . 32
Service interval disp lay .... .... ..... 23
Setting .......................... 29
Controls and equip­
ment Safety first
Sound system display
.... .. ..... .. . 22 Emergency starting . ... .. .... .... .... 279
Trip computer ............ ..... .. . 25
Emerge ncy towing ...... .... .... ... . 282
yellow symbo ls ................... 32
Engine
Driver seat Cecking and fil ling locations .. .... . 219
See Seating position .. ..... .... ... 116
Checking and fi lling locations .. ... . 218
Dr iving Coolant ...... .... ... .... .... .... 224
Run-flat tires ..... ... .. ...... .... . 259 Hood .. ...... .... .... ... .... .. .. 216
Dr iving safely .......... ............ . 114 Start
ing ...... .... .... ... .... .. 92, 93
Duplicate key .... ...... ... .. .... .... . 38 Start
ing with jumper cables .... .... 279
Dust filter ........................... 86 Stopping
...... .... ... .... .... .... 93
Engine compart ment .. ...... .... .... 218
E Safety instruc tions .. ...... .... ... . 217
Working in the engine compa rtment . 217
Elapsed time .... .... ........ ....... . 26
Engine coolant system ......... ...... 224
Electro -mecha n ica I power assist .. .. 20, 188 Adding coo
lant ..... ........ ...... 225
Electron ic different ial lock (EDU Check
ing the eng ine coolant level ... 225
How the sys te m works .. ...... .... 184 Radiator fan ..
.... ....... .... .... 226
Warning/indicator lights ...... ...... 20 Te
mpe rature gauge ...... .... .... .. 13
Electronic immobilizer .... ..... .. .. 14, 40 Engine cooling system
Electronic power cont ro l Malfunction
............ ... .. ..... 34
EPC warning/indicator light ......... 17 Engine data
... .. .... .... .... .... ... 29 1
E lectron ic speed limiter . ...... .... .... 25 E
ngine hood
Electronic Stability Program .. .... .... 182 Closing
... .... .... ... .... ...... . 217
Electronic stabilization program (ESP) How to release
the hood . ...... .... 216
Warning/indicator lights .. .... .... .. 17 Engine oil
..... .. .......... ... .. .... 219
Emergency flasher Warning/indicator lights ...... .... .. 18
Emergency flashers .................. 57
Emergency locking .. .... ........ ... .. 45
Emergency operation Adding
......... .... ........ ..... 222
Additives .. .... .... ......... ..... 222
Changing . ..... ... .... .... ... ... . 223
Checking the eng ine oi l leve l ....... 221
Indica tions and condit ions requiring ext ra
checking ....................... 221
Rear lid ...... ... .... .... .... .... . 46
Oil consumption ... ... ...... ...... 221
Emergency release for selector lever ... 106
Oil grades .... .... .... ..... .. .... 2 19
Vehicle operation Vehicle care Do-it-yourself service Technical data