2008 AUDI TT ROADSTER heating

_____________________________________________ C_h_ e_ c_k _in ____ g_ a_n _d_ f_il _li _n __ g ____ fflllll
•
0 Note
Never mix oil additives with your engine oil. These additives can
damage your engine and adversely affect your Audi Limited New
Vehicle Warranty .
W For the sake of th e environm ent
• Before changing your oi l, first make sure you know where you
can properly dispose of the used oil.
• Always dispose of used engine oil properly. Do not dump it on
garden soil, wooded areas, into open streams or down sewage
drains .
• Recycle used engine oi l by taking it to a used engine oil collec ­
tion fac ility in your area, or contact a service station. •
Engine cooling system
Coolant
The engine coolant performs two functions: it keeps the
engine from overheating and it protects the engine from
freez ing in the winter.
The coo ling system is sealed and generally requires little attention.
T he coo ling system has been filled at the factory with a permanent
coolant which does not need to be cha nged . The coolant consists of
a mixture of water and the manufacturer's glycol-basedcoolant
addit ive G 12 + antifreeze with an ticorrosi on addit ives (50% for USA
models; 60% for Canadian models). This mixture both assures the
necessary frost protection and protects metal components in the
engine's cooling system from corrosion and scaling . It a lso raises
the boiling point of the coo lant .
Do not reduce t he concentration of the coolant in the summer by
adding plain water.
The prop ort ion of coolant additi ve mu st be at le
as t 50 % but not more th an 60 %
to maintain antifreeze protection
and co oling effic iency . If the coo lant fros t protect ion is too low, the
coolant could freeze and damage the vehic le heating and engine
coo ling system.
For year-round driving, antifreeze is added at the factory for temper ­
atures down to:
• - 31 °F ( - 35 °C) USA
• -40 °F ( -40 °C) Canada.
You can mix the G12 + coo lant additive with other additives (f or
examp le G11 or G12l. Always check with your authorized Audi
dea ler .
& WARNING
Before you check anything in the engine compartment , alway s
read and heed all WARNIN GS
=:> & in "Working i n the engine
c ompartment " on
page 220.
0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions . This is especia lly important if you live in a region where
the winter is extremely cold. If necessary, increase the proport ion o f
coo lant additive to 60%.
• When adding coolant additive to your coo ling system,
remember :
- We recommend using only coolant additive G12+ (check the
label) for your vehicle. This coolant additive is avai lable 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 sea lant to your vehicle's
engine coolant. Adding radiator repair fluid may adverse ly affect the _.,
Vehicle care I t •

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
function and performance of your cooling system and could result
in damage not covered by your New Vehicle Limi ted Warranty .•
Checking the engine coolant level
The engine coolant level can be checked with a quick
g lance .
Fig. 154 Engin e
co mpartment : coo lan t
e xpansio n tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS =>
& in "Working in
the engi ne compa rtment" on
page 2 20.
- Switch t he ignition off.
- Rea d the coo lan t leve l at th e co ola nt e xpansion tank
=> fig . 154. Wit h a c old engine , it must be a b ove the
"min" mark . With a hot engine, it can be a little a bove t he
indicated range .
The location of the coo lant expansion tank can be seen in the
engine compartment i llustration.
To obtain an accurate reading, the engine must be switched off .
The expans io n tank in your vehicle is equipped with an electric
coo lant level sensor . When the coolant leve
l is too low , the warning light in the Auto­
Check System ~
page 32will blink un til you add coolant and the
level has been restored to normal. Even though there is an electric
coo lant level sensor, we still recommend you check the coolant level
from time to time .
Coolant los s
Coolant loss may indicate a leak in the cooling system . In the event
of coo lant loss, the cooling system should be inspec ted i mmedi ­
a tely by your authorized Audi dealer . It is no t enough mere ly to add
coolant.
In a
sealed system, losses can occur only if the boi ling 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
coo lant. A dding ra diator repair fluid may adversely affec t the func ­
tion and performance of your cooling system and could result in
damage not cove red by your New Veh icle Limi ted War ranty. •
Adding coolant
Be very careful when adding en gine coolant.
Before you c heck anything in the engine compartment,
always read and heed all WARNINGS =>
& in "Working in
the eng ine compa rtment" on
page 220 .
-Turn off the engine.
- Let the engine coo l dow n.
- Place a t hick rag
over th e coola nt expansio n tank
=> fig . 154 and carefully twist the cap cou nter -c lockwise
=> & .
- Add coolant .

Fuses and bulbs -
----------------
Equipment No. Equipment
Amps
Engine relay, fuel tank control unit, Airbag Off
16 A/C system (control unit) 10
1
light, light switch (switch illumination), diagnos-10
tic connector
17 Tire pressure monitoring system (control unit) 5
18
Not used
ABS, ASR, ESP, brake light switch
5 19
Not used
3 AFS headlight (left) 5
Not used
Oil level sensor (extended maintenance interval)
(WIV), tire pressure monitoring system, switch
21 Fuel injectors (gasoline engine) 10
4 for Electronic Stability Program (ESP), AFS head-5 Wind deflector (Roadster) 30
lights (control unit), A/C system (pressure sen -23 Horn 20 sorl, backup light switch
Automatic headlight range control, AFS head-
24 Transmission (control unit) 15
5
light (right)/ manual headlight range control, 5/10
25 Heater rear window Coupe/heated rear window 30/20
halogen headlights Roadster
Control unit for CAN data transfer (gateway),
26 Driver's side power window 30
6 electromechanical steering, automatic transmis-5
27 Passenger's side power window 30
sion shift gate
28 Not used
Acoustic Park Assist, automatic dipping interior
rear view mirror, garage door opener, heatable
29 Washer pump 15
7
windshield washer nozzles, washer pump, wind 5
30 Cigarette lighter 20
deflector relay (Roadster)
31 Starter 40
8
Haldex clutch 5 32 Steering column module 5
9
Control unit Audi magnetic ride 5 33
Instrument cluster 5
Airbag control unit 5 34 Radio navigation system, radio 15
1 1 Mass airflow sensor, crankcase heating 5/10
35
Audio amplifier 30
12 Door control unit (central locking driver/passen-10
36 Engine (control unit) 10 ger)
13 Diagnostic connector 10 37 CAN (Gateway) 5
Rain sensor, automatic transmission shift gate 5 38 Not used
15 Roof
light (interior lighting) 5 39 Not used
• Do-it
-yourself service

llll1.--___;E::. m :..:..:. e .::..:..r_,.g ~e:..: n:..:..: c:.!y ;__: s:... i..:.t ..:.u :...a ..:.t:... i..::o ..:.n..:.. s::.... ______________________________________________ _
6. Connect one end of the black jumper cable to the nega­
tive term inal
0 of t he booster bat tery @.
7. Connect the other end of the balck jumper cable to the negative terminal (bolt head)
G) in the external starting
point @ of your ve hic le.
8. Route the jumper cables so tha t they cannot catch in any
rotating parts in the engine compartment.
Starting the engin e
9. Start the engine of the vehicle providing assistance and
allow it to run at id le.
10 . Now start t he engine o f the ve hicle wit h the disc harged
battery, wa it for two to three minutes until t he engine
"runs" smoothly.
11 . If the engi ne does not start : Stop tryi ng after 10 seconds
and t hen try ag ain after abo ut 30 secon ds.
12. In the vehicle that has received start assistance, turn on
the heate r blower and the rear window heating to elimi­
nate any voltage pea ks when disconnecting. Driving
lights must be switched off!
1 3. Disconnect the cable while the engine is running exactly
in
reverse order to that described in=> page 279,
"Connecting/d isconnecting the jumper cable .". When
doing so, make sure t hat the cable cannot contact
rotating engine parts.
14 . Close the cover on the pos itive terminal.
The battery is vented to the outside to prevent gases from entering
the vehic le interior. Make sure that the jumper clamps are well
connected with their
metal parts in full contact with the battery
termina ls .
& WARNING
To a vo id se riou s pe rso nal in jur y a nd d am age t o the vehi cle, heed
all wa rnings and in stru ction s of th e jumper cable manuf acturer. If
i n doubt , call for r oad ser vic e.
• Jumper c able s mu st be long enough so that the vehicle s do not
t o uch .
• When connecting jumper cable s, make sur e th at they cannot
g et ca ught in any mo ving p arts in the eng ine comp artment .
• Bef ore you che ck anyth ing in the engin e comp artment , alway s
r ea d and heed all WARNING S=:,
page 21 2, "Engine c omp artment ".
0 Note
Improper hook -up of jumper cables can ruin the generator .
• Always connect POS ITIVE ( +l to POSITIVE(+), and NEGAT IVE( -) to
NEGAT IVE( -) ground post of the battery manager control unit .
• Check that al l screw plugs on the battery cells are screwed in
firm ly . I f not, tighten plugs prior to connecting clamp on negative
battery terminal.
• Please note that the procedure for connect ing a jumper cable as
described above applies specifical ly to the case of your vehicle
being jump started. When you are giving a jump start to another
vehicle, do
not connect the negative(-) cable to the negative 1- l
terminal on the discharged battery@. Instead, securely connect
the negative( -) cable to either a sol id metal component that is
firm ly bolted to the engine block or to the engine block itself . If the
battery that is being charged does not vent to the outside, escaping
battery gas could ignite and explode! •

___ A_l.:,. p _h_ a_ b_e _t _i c_ a_l _i n_ d_e _x ____________________________________________ _
Convertible locking retractor . . . . . . . 177
Important safety instructions for using child safety seats .. ..... .. .. .... 171
Important things to know when driving with chi ldren . .... .... ... .... ... 168
Infant seats .. ........ ....... .... 173
Older children and safety belts ..... 177
Safety belts and older children . . . . . 177
Which restraint system should my older child wear? .. .... .... ... ... .... 177
Child safety seat .... .... ... .. ...... . 173
Convertible locking retractor . . . . . . . 177
Installing ..... ............ ...... 177
Ch ild safety seats
How do I properly install a chi ld safety
seat in my vehicle? .. ... .... . .. .. 171
Safety instructions . . . . . . . . . . . . . . . 171
Cigarette lighter ... ..... ... ....... ... 95
Cleaning Alcantara (synthetic suede) . . . . . . . . 211
E ngine compartment ... .. .... .... 212
Fabrics and fabric coverings . ...... 208
Instrument panel ... .. .... ... .... 209
Interior ...... .... .... .... .... ... 208
Leather . . . . . . . . . . . . . . . . . . . . . . . . . 210
P lastic and viny l .. .... ....... .... 204
Plastic parts ..................... 209
Safety belts . . . . . . . . . . . . . . . . . . . . . 212
Trim strips .................. 204, 205
Cleaning and protection ... .. .... .... 200
Climate control A/C operation . . . . . . . . . . . . . . . . . . . . 102
Air distribution . . . . . . . . . . . . . . . . . . 101
Air ven ts . . . . . . . . . . . . . . . . . . . . . . . . 1 02 Automatic mode .
. . . . . . . . . . . . . . . . 101
Defrost . . . . . . . . . . . . . . . . . . . . . . . . . 101
Economical use .................. 103
Fan ... .... ....... .... .... .... .. 100
Heated seats . . . . . . . . . . . . . . . . . . . . 104
Rear window defogger . . . . . . . . . . . . 103
Switching on and off ..... ... .. ... 100
Climate controls ... .. .... ..... .. ... .. 98
Air recirculation mode .. .... ...... 102
Controls ......................... 98
Dust filter ..... ............... .... 98
Heating ........ ... .... .... .... ... 98
Pollen fi lter .. ...... .... .... .... ... 98
Venti lation .... .... .... .... .... ... 98
Clock ... ... .. .... ..... .. ... ... .... .. 13
Co ld tire inflation pressure . ...... .... 242
Coming -home -function ............... 73
Compass mirror ..... .... ... ... .. .... 85
Consumer In formation .... .... ... 136, 293
Contacting NHTSA . . . . . . . . . . . . . . . . . . 136
Con trols and displays . . . . . . . . . . . . . . . . 11
Conve nience close/open feature
P o wer top . . . . . . . . . . . . . . . . . . . . . . . . 63
Windows ... .. .... .... .... .... ... 58
Convertible chi ld seats
How do I proper ly install a convertib le
chi ld seat in my vehic le? ... .... .. 174
Safety instructions ............... 174
Convertible locking retractor Activating ... .. ..... .. .... .... ... 1 79
Deactivati ng . . . . . . . . . . . . . . . . . . . . . 180
Using to secure a chi ld safety seat . . 177,
179 Coolant System
Expansion tank 228
Coolant system ...... .... .... .... ... 227
Cornering light .... ....... ....... .... 72
Cruise contro l ...................... 110
Changing speed ................. 111
Presetting your speed ............. 111
Switching off . .... ..... ... .... ... 111
Switching on .. .... .... ..... .. ... 110
Warning/indicator l ights ........... . 19
Cruising range ..... ... .... .... ...... . 39
Cup holder . ...... .... .... ... .... .... 94
D
Damp ing
See Audi magnet ic ride ..... .... ... 112
Data .......... ... ....... .... ...... 291
Data recorder . ........ ... .. .... .... 184
Date display .. .... .... ............... 13
Daytime running lights ......... ...... 71
Daytime running lights (Canada) ...... . 71
Declaration of conformity ............. 45
def What does this mean when it appears in the trip odometer disp lay? .. ...... 14
Defrosting the windows ............. . 101
De termining correct load li mit ... .. ... 247
Digital clock . .... .... ..... .. ..... .... 13
Setting the time ................... 13
Digital compass ... ....... .... ...... . 85
Digital speedometer ...... .... .... .... 2 4

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_ic _ a _ l _in _ d_e _ x __ _
Heated
front seats (climate control) .... .... 104
rear window ...... ....... ..... ... 103
Heated outside mirrors ... .. .... .... .. 83
Heated seats .................. .... . 104
Seats ...... ...... .... ........ ... 104
Heated washer jets
Wiper and washer system . ......... 78
Heating .. .... ... .... .... ......... ... 98
High beam ...... ................. 69, 76
Warning/indicator lights ... ... .... .. 18
High voltage warning label ........... 288
Homelink® ... .. .... .... ........... 121
Homelink® universal remote control ... 121
Hood Opening .. ............... ... .... 219
Release lever .................... 219
Horn ......... ... .. .... .... ...... ... 11
How many airbags does my vehicle have? . .
153
How often should I check my tire pressures?
245
How safety belt tensioners work .... ... 144
Hydroplaning ........ .... .... .... ... 249
I
Igni tion key 106
Ignition lock ...... ...... .... ...... .. 106
Ignition lock positions ............... 106
Immobili zer ... ............. ..... ... . 14
Important things to do before driving .. 128
Controls and equip­
ment Safety first
Improperly
worn safety belts ... .. ... .. 144 K
Indicator light
Airbag system ........ .... .... ... 157 Key .....
........ ........ ...... ... .. . 47
Audi magnetic ride ................ 17 Battery replacement ......
.... .... . 49
PASSENGER AIR BAG OFF ... ....... 157 Conven
ience opening and closing of pow-
Indicator lights .. ...... .... .... ...... 16
Infant seats ........ ...... ... .... ... 173
How do I properly insta ll an infant seat in
my vehicle? ....... ...... ....... 173
Safety instructions ......... ....... 173
Inside rearview mirror ......... ...... . 82
Installing child safety seats
Safety belts ...................... 177
Instrument cluster and controls . ...... . 12
Instrument panel
Illumination ......... ............. 74
Ins truments and controls
Genera l il lustration ................ 11
Interior lights ....... ..... ....... .... . 77 er top
... .... .... ... ............ 63
Convenience opening and closing of windows ............ .... ........ 58
Emergency key .. ...... ............ 47
Key replacement ......... .... ..... 47
Master key . ...... .... ...... .... .. 47
Valet key ... .. .... .... .... .... .... 47
Key less entry remote contro l .......... . 48
Kick-down Automatic transmission ........... 117
Knee airbags ........ ... .... ........ 161
Description . ...... .... ....... .... 161
How they work ................... 163
Important safety instructions ... .... 163
Luggage compartment .. ....... .... 77
L
J Launch Control Program ............. 117
Jump start location ........... ... .... 279
Jump starting ...................... 279
Jumper cables ... ..... ...... .... .... 279
Jump-starting . ........ .... ... .. .... 278 Leather ...
... .... ....... .... ...... . 209
Cleaning ...... .... ..... .. .... ... 210
Leaving -home-function ................ 73
Lifting jack ......................... 269
Lift ing vehicle .... .................. 283
Light sensor defective ........... ...... 36
Light sensor package Automatic headlight control .. ....... 70
Vehicle operation Vehicle care Do-it-yourself service Technical data