2011 AUDI TT ROADSTER cooling

wooded areas, into open streams or
down sewage drains.
- Recycle used engine oil by taking it to a
used engine oil collection facility in your
area, or contact a service station.
Engine cooling system
Coolant
T he engine coolan t performs two functions: it
keeps the engine from overheating and it pro ­
tects the engine from freezing in the winter .
The cooling system is sealed and generally re­
quires little attention .
T he cooling system has been filled at the fac­
tory with a permanent coolant which does not
need to be changed . The coolan t consis ts of a
mixture of water and the manufacturer 's gly ­
col-basedcoolant additive G12 ++ antifreeze
with anticorrosion additives (50% for USA
models; 60% for Canad ian models). This mix­
ture both assures the necessary frost protec­
tion and protects metal components in the
engine 's cooling system from corrosion and
scaling. It also raises th e boiling point of the
c oolant.
Do not reduce the concentration of the coo l­
ant in the summer by adding plain water .
The
proportion of coolant additive must be at
least 50% but not more than 60%
to main­
tain antifree ze protection and cooling efficien­
cy . If the coolant frost protection is too low,
the coolant could freeze and damage the veh i­
cle heating and eng ine cooling system .
For year-round driving, an tifree ze is added at
the factory for temperatures down to:
- -31 ° F ( - 3 5 °C) USA
- -40 °F ( -40 °C) Canada.
You can mix the G12 ++ coolant addit ive with
other additives (G12+ or G12) . Always check
with your authorized Audi dealer.
& WARNING
Before you check anything in the engine
compartment, always read and heed all
-
Checkin g and fillin g 185
WARNINGS c:::> .& in Working in the engine
compartment on page 178.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­
mate conditions. This is especially impor­
tant if you live in a region where the win­
ter is extreme ly cold . If necessary, in­
crease the proportion of coo lant add itive
to 60% .
- Whe n adding coolant additive to your
cooling system, remember :
- We recommend using only coo lant ad­
ditive G12++ (check the labe l) for your
vehicle . This coolant additive is avai la­
ble at authorized Audi dealers. Other
types of ant ifreeze can significantly re­
duce corrosion protection . The result­
ing corrosion can cause a loss of cool ­
ant and ser ious eng ine damage.
- Do not add any type of rad iator leak seal ­
ant to yo ur vehicle's engine coolant .
Add ing radiator repair fluid may adverse­
ly affect the function and performance of
your cooling system and could resu lt 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 glance.
Fig. 141 E ng ine compart men t: coo lant ex pansion t ank Ill>

186 Checking and filling
Before you check anything in the engine com­
partment,
alwa ys r ea d and heed all WARN­
INGS ¢ A in Working in the engine
comportment on page 178.
• Switch the ignition off .
• Read the coo lant level at the coolant expan­
s ion tank ¢
fig. 141 . With a co ld engine, it
must be above the "min" mark. W ith a hot
engine, it can be a little above the indicated
range.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration .
To obtain an accurate reading , the engine
must be switched
off.
The expansion tank in you r vehicle is equipped
with an e lectric coolant level sensor .
When the coolant level is too low, the warning light in the Auto- Check System ¢
page 31 will
blink until you add coo lant and the level has
been restored to no rma l. Even though there is
an electric coolant level sen sor, we still rec­
ommend you check the coolant leve l from
time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
system . In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized A udi dealer. It is not
enough merely to add coolant .
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
@ Note
Do not add any type of ra diator leak seal­
ant to yo ur vehicle's eng ine coolant. Add ­
ing radiator repair f luid may adversely af­
fect the function and performance of your
cooling system and could result in damage
not covered by your New Vehicle Limited
Warranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the engine com­
partment,
always read and heed all WARN­
INGS ¢ A in Working in the engine comport­
ment on page 178 .
•Turnoff the engine.
• Let the eng ine cool down.
• Place a thick rag ove r the coolant expansion
tank
¢ page 185, fig . 141 and carefully
tw ist the cap counter-clockwise ¢&_ .
• Add coolant.
• Twis t the cap o n aga in
tightly.
Replacement engine coolant must conform to
exact spec ificat ions
¢ page 185, Coolant.
E ven in a n emerge ncy, if coo lant addi -
t ive G1 2++, G12+ or G12 is not ava ilable , do
not use a d ifferen t addit ive. Use plain water
instead unti l you can get the cor rect additive
and can restore the correct ratio . This sho uld
be done as soon as possible .
If you have los t a considerab le amo unt o f
coolant , then you sho uld add cold ant ifreeze
and co ld wate r on ly w hen the engine is cold.
Always use
new engine coo la nt whe n refilling .
Do not fill coola nt above the "MAX" mark. Ex­
cess coo la nt wi ll be fo rced o ut through the
pressure relief valve in t he cap w hen the en­
gine becomes hot.
,&. WARNING ~ -
- T he cooling system is under pressure and
can get very hot. Reduce the risk of
scalding from hot coolant by followi ng
these steps.
- T urn
off the engine and allow it to coo l
down.
- Protect you r face, hands and a rms from
esca ping fluid and steam by covering
the cap w ith a large, t hick rag.
- T urn the cap slowly a nd ve ry carefully
in a counter-clo ckwise direction while
applying light, downward pres sure on
the top o f the cap.

A
A/C operation
ABS ................... .... 78
refer to Anti-lock brake system .. .. .. . 153
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 243
Acoustic park assist . . . . . . . . . . . . . . . . . . 83
Adaptive light ................ .... ... 54
defective . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Adding Engine coolant ........... .. .. .. .. .
Engine oil ...... .... ... .. .. .. .. .. .
Windshield washer fluid ....... . ... .
Additional accessories
Additives Engine oil .. ............. .. .. .. .. .
Adjustable steering column ...... ... .. . 186
183
192
243
183 80
Adjusting front seats ............ ..... 66
Adjusting steering column ... .. .. .. .. .. 80
Adjusting the seats ......... .. .. .. .. .. 67
Advanced Airbag System Children ... ................ ... ... 137
Components ................ ... .. .
Front airbags ............ .... .. .. .
How the components work together . . 121
120
123
Monitoring . . . . . . . . . . . . . . . . . . . . . . . 125
Weight -sensing mat ......... .... .. 137
Airbag Warning/indicator lights ..... .. .. .. .. 16
Airbag system . . . . . . . . . . . . . . . . . 115, 134
Care ....... .. ............... .. .. . 128
Child restraints .............. ... ... 138
Components (front airbags) . ... .. .. . 121
Danger of fitting a child safety seat on
the front passenger seat . . . . . . . . . . . . 116
Disposal 128
Front airbags .... .. ...... .. .. .. .. . 119
How do the front airbags work? . ..... 124
How many airbags does my vehicle
have? . .. .. .... ............. .. .. . 121
I mportant safety instructions on the
knee airbag system .......... ... .. . 132
Important things to know ... ... .. .. . 115
Indicator light .............. ... ... 125
Knee airbags . . . . . . . . . . . . . . . . . . . . . . 130
Monitoring . ............. .... .. ... 125
PASSENGER AIR BAG OFF light .. .. .. . 126
Repairs . ... ... .. .. ...... .. .. .. .. . 128
Index 245
Side airbags ..... ................. 132
When must the system be inspected? . 125
All-wheel drive .. .. ................. 154
Winter tires ... .. .... ........... . .
Alloy wheels .. .. .. .. . ... ...... ... . .
Alternator
refer to Generator . . .............. ..
Anti-freeze 209
167
16
refer to Engine cooling system ... .. .. 185
Anti -glare inside day-night mirror ....... 58
Anti-lock brake system How the ABS system works ......... . 153
Warning/indicator lights ........ .. .. . 17
Anti-Sl ip Regulation System (ASR)
How the system works .............. 150
Anti-theft systems Anti-theft alarm system ........ .. .. . 42
Electronic immobilizer .......... .. .. . 36
Ashtray
ASR
.... .. .. .. ... ............ ...
How the Anti-Slip Regulation System 71
works .... .. .. .. ................. 150
Asterisk What does it mean when something is marked with an asterisk? .............. 6
Audi magnetic ride . . . . . . . . . . . . . . . 14, 86
Description .. .. .. ... ............ .. . 86
Ind icator light . .... ... .......... .. . 14
Audi Service Repair Manuals and Litera-
ture .......... ... .. .. ... ......... .
Automatic belt retractor ............ .
Automat ic car wash
refer to Washing . .... ........... . .
Automatic convertible top 241
110
163
closing . .. .. .. .. .. . .. .... ........ . 48
opening ........ .. ............... .
Automatic transmission ............ .. .
Driving Notes .. .. ................. . 48
87
89
Emergency program .. .. ...... ...... 92
Emergency release . . . . . . . . . . . . . . . . . . 92
Ignition key safety lock .............. 81
Kick-down ... .. .. ... ............ ... 91
Launch Control Program .......... .. . 91
Selector lever lock . . . . . . . . . . . . . . . . . . 88
Selector lever positions . . . . . . . . . . . . . . 87
Tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Tiptronic controls on the steering wheel 91
•
•

Infant seats . ............ .. .. .. ... 141
Safety instructions . . . . . . . . . . . . . . . . . 139
C igarette lig hter ........... .... .. .... 72
Cleaning Alcantara (synthet ic suede) . .. .. .. .. . 171
Eng ine compartment .......... ... .. 172
Exhaust tail pipes .............. .... 168
Fabr ics and fabric coverings .. .. .. .. . 169
Instr ument panel ......... .. .. .. .. . 169
Int erior .. .. ............. .. .. .. .. . 168
L eather . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Navigation display ........ .. .. .... . 168
P lastic and vinyl ............ .. .. ... 166
Plastic parts ............. .... .. .. . 169
Radio display . ........... .. .. .. ... 168
Safety belts . . . . . . . . . . . . . . . . . . . . . . 172
Trim str ips . . . . . . . . . . . . . . . . . . 165 , 166
Cleaning and protection ........... .. . 162
Climate controls ........... .. .. .. .... 75
A/C operation . . . . . . . . . . . . . . . . . . . . . . 78
Air distribution ........... .. .. .. .... 77
Air rec irculation mode ............... 78
Automatic mode . . . . . . . . . . . . . . . . . . . 78
Controls ... ............. .... .. .... 75
Defrost .... .. ........... .. .. .. .... 78
Economical use . . . . . . . . . . . . . . . . . . . . 78
Fan ...... ... ................ .... . 76
Heated seats . . . . . . . . . . . . . . . . . . . . . . 79
H eating .. .. ............. .... .. .... 75
Po llutant filter ........... .. .. .. .... 75
Rear window defogger ....... .. .. .. .. 79
Switching on and
off . . . . . . . . . . . . . . . . 76
Temperature . ............ .. .. ...... 76
Ventilation ... ........... .. .. .. .... 75
Clock ....... ................. .. .... 11
Clutch overheating ......... .. .. .. .. .. 92
Cold tire inflation pressure ..... .. .. .. . 198
Coming home ................ .... ... 54
Compass m irror ........... .... .. .... 64
Compliance .. ............. .... .. .. . 244
Consumer Information . . . . . . . . . . 105, 241
Contacting NHTSA .................. 105
Controls and displays ......... .. .. .. .. . 8
Convenience close/open feature
Power top .. ... .. .. ...... .. .. .. .. .. 48
Windows .. ................ ... ... . 44
Convertible child safety seats . ... .. .. . 142
Index 247
Convertible locking retractor
Activating ... .. .... . ............ .. 146
Deactivating ... .. .. . .. .......... .. 147
U sing to secure a child safety seat 1.44, 146
Convertible top .. .. ................. . 46
Automat ic convertible top ......... .. . 48
Care and cleaning .... .......... .. .. 164
Emergency operation ........... .. .. . 49
General information ............. .. . 46
manua l convertible top ............. . 47
Warning/indictor lights ............ .. 14
Wind deflecto r ... .. . .. .. ...... .. .. . 49
Cooling system . . . . . . . . . . . . . . . . . . . . . 185
Expansion tank . . . . . . . . . . . . . . . . . . . . 185
Cornering light . . . . . . . . . . . . . . . . . . . . . . 54
Cruise contro l . . . . . . . . . . . . . . . . . . . . . . . 84
Changin g speed .. .. ... ....... .... .. 85
Presetting your speed . .. .... ... .. .. . 85
Switching
off .. .. ................. . 8S
Switching on . .. .. .... ........... .. . 84
Warning/indicator lights ........ .. .. . 16
Cup holder .. .. .. .. .. . .. .. ...... .. .. . 71
Current fuel mileage
20
D
Damping
refer to Audi magnetic ride ........... 86
Data ....... .. .. .. ... ............ .. 239
Data recorder . . . . . . . . . . . . . . . . . . . . . . 148
Date display . . . . . . . . . . . . . . . . . . . . . . . . 11
Daytime runn ing lights ... .. ...... .. .. . 53
Declarat ion of compliance
Cell phone package . . . . . . . . . . . . . . . . 244
E le ctronic immob ilizer .............. 244
Homelink ® un iversal remote control .. 244
Remote control key .. .. .. ...... .. .. 244
def What does this mean when it appears in
the tr ip odometer display? ...... .. .. . 12
Defective light bulb warning .......... . 33
Defrosting the windows ......... .... .. 78
Determ ining correct load limit ...... .. 202
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . 11
Digital compass . . . . . . . . . . . . . . . . . . . . . 64
Dimens ions ... .... .. . .. .......... .. 238
•
•

248 Index
Dipstick
Reading the dipstick prop erly ..... .. . 183
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Driver information . . . . . . . . . . . . . . . . . . . 30
Dr iver info rmation system
M enu button . . . . . . . . . . . . . . . . . . . . . . 22
M enu display .............. .. .... .. 21
Open door or front lid warning .. .... .. 19
Outside temperature display .. .. .. .... 19
Red symbols ....................... 29
Service interval d isplay ......... ..... 24
Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Sound system display ..... .. .. .. .. . . 19
Trip computer . . . . . . . . . . . . . . . . . . . . . . 20
ye llow symbo ls ........... .... .... .. 29
Driver seat
refer to Seat ing pos ition ........ ..... 99
Driving Run-flat tires ............ .. .. .... . 216
Driving saf ely . . . . . . . . . . . . . . . . . . . . . . . 98
Driving through water ....... .... .... 158
Duplicate key .............. ... .... .. 35
Dust filter . . . . . . . . . . . . . . . . . . . . . . . . . . 76
E
Efficiency program . . . . . . . . . . . . . . . . . . . 23
Fu el economy messages . . . . . . . . . . . . . 24
Memory levels . . . . . . . . . . . . . . . . . . . . . 20
Other equipmen t . . . . . . . . . . . . . . . . . . . 24
Elapsed time . . . . . . . . . . . . . . . . . . . . . . . . 20
Electro-mechanical power assist . . . 18, 153
El ect ronic different ial lock (EDL)
How the system works ..... .. .. .. .. . 149
Warning/indicator lights ....... .... .. 17
E lect ronic immobilizer . . . . . . . . . . . . 12, 36
Electronic power control
EPC warning/indicator light .. .. .. .... 14
El ect ronic speed limiter . . . . . . . . . . . . . . . 28
Electronic Stability Program ...... .... 148
Electronic stabilization program (ESP) Warning/indicator lights ... .. .. .... .. 15
Emergency flasher . . . . . . . . . . . . . . . . . . . 56
Warning/indicator lights ....... .... . . 15
Emer gency locking . . . . . . . . . . . . . . . . . . . 40 Emergency
operation
Convertible top .. .................. 49
Rear lid ... .. .. .. .. .............. .. 42
Emergency starting ............. .. .. 231
Emergency towing . ................ . 233
Energy management ................ 155
Battery power ... ................. 156
Driver notification ................. 156
Engine Check ing and filling locations ..... ... 180
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Hood ......... .. .. .............. . 178
Starting . . . . . . . . . . . . . . . . . . . . . . 80, 81
Starting with jumper cables ..... .... 231
Stopping .. .. .. .. .. ........... .... . 82
Eng ine compartment . . . . . . . . . . . . . . . . 180
Safety instructions ................ . 178
Working in the engine compartment 178
Engine coolant system
Malfunction ... .. .................. 31
Radiator fan ..... ................. 187
T em perature gauge ............ .... . 11
Engine cooling system . . . . . . . . . . . . . . . 185
Adding coolant . .. ............. .. .. 186
Checking the engine coolant level ... .. 185
Engine data ..... ................... 239
Engine hood Closing ... .... ................... 178
How to release the hood ............ 178
Engin e oil . ..... .. .. .............. . 180
Adding ....... .. ............. .... 183
Additives . ..... .. .. .............. . 183
Changing . .... .. ............. .... 184
Checking the engine oil level ..... .... 183
Indications and conditions requiring ex-
tra checking ..... ................ . 183
Oil consumpt io n .. .. ..... ........ .. 182
Oil grades . .. .. .. ............. .. .. 180
Recommended oil check intervals ... .. 183
Specification and viscosity ........... 180
Engine oil level . . . . . . . . . . . . . . . . . . . . . . 32
Engine oil pressure (malfunction) ... ... . 31
Engine oil sensor defective . . . . . . . . . . . . 32
Engine speed limitation .............. . 33
Environm ent
Break-in period ... ............. .... 157
Catalytic converter ................ . 158