2018 AUDI TT ROADSTER cooling

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
lubricating properties of oil diminish gradually
during normal vehicle use.
Unde r some c ircu mstances the eng ine o il should
be changed more frequently . Change oil mo re of­
ten if you drive most ly short distances, ope rate
the vehicle in dusty areas or under predominant ly
stop-and -go traffic condit ions, or have your vehi­
cle where temperatures remain below free zing
for extended periods.
Detergent additives in the oil will make fresh oil
l ook dark after the engine has been running for a
short time. Th is is normal and is not a reason to
change the oil more often than recommended.
Because of the problem of proper disposa l, along
with the special tools and necessary expertise re­
qu ired, we strongly recommend that you have
your oil changed by an authorized
A ud i de ale r or
a qualified service station .
If you c hoo se to change your o il y our self , please
note the following important information:
A WARNING
To reduce the risk of personal injury if you
must change the engine oil in your veh icle
yourself:
- Wear eye protection .
- To reduce the risk of burns from hot engine oil, let the eng ine cool down to the touch.
-
- When removing the o il drain plug with your
fingers, stay as far away as poss ible. A lways
keep your forearm paralle l to the ground to
help prevent hot o il from runn ing down your
arm .
- Drai n the oil into a container designed for
this pu rpose, one large enough to hold at
least the total amount of oil in your e ng ine .
- Engine oil is poisonous . Keep it well out of
the reach of ch ild ren .
- Cont inuous contact w ith used eng ine oi l is
harmful to your sk in. A lways protect your
sk in by washing oil off thoroug hly w ith soap
and water.
@ Note
Never mix oil addit ives with your engine o il.
These additives ca n damage your eng ine and
Ch eck ing and F illing
adverse ly affect yo ur Audi Limited New Vehi­
cle Warranty.
@ For the sake of the environment
- Before chang ing yo ur oil, first make sure
you know where you can proper ly d ispose o f
the used oi l.
- Always dispose of used engine o il 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 oi l collection faci lity in you r area, or
contact a service station .
Cooling system
Coolant
The eng ine cooling system is fi lled w it h a m ixtu re
of purified water and coo lant additive at the fac ­
tory . This coolant must not be not c hanged.
T he coo lant level is mo nitored th ro ugh
the . in­
dicator light
<:!) page 12. However, we do recom­
mend occasionally checking the coolant leve l
manua lly.
If you must add coolant, use a mixture of wate r
and coolant additive . Mix ing t he coo lant add it ive
with dis tilled water is recommended.
Coolant additive
T he coolant add itive is made of anti-free zing and
cor rosion protect ion agents. On ly use the follow­
i ng coolant additives . These add itives may be
mixed wi th ea ch o the r.
Coolant additive Specification
G 13 TL 774 J
G12++ TL 774 G
The amount of coolant additive that needs to be
mixed with water depends on the cl imate where
the vehicle w ill be oper ated. If the coo lant add i­
t ive percentage is too low, the coolant can freeze
and damage the eng ine .
.,.
239

Checking and Filling
Coolant Freeze protec-
tion
additi ve
Warm min. 40% min. -13 °F
regions (- 25 °C)
max . 45%
Cold min. 50% max. -40 °F
regions (-40 °C)
max. 55%
@ Note
- Before the start of winter, have an author­ ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. Th is is especially important
when driving in co lder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive . You cou ld damage the en­
gine.
If t his happens, only use wate r and re­
store the correct mixture ratio with the
specified coolant additive as soon as possi­
ble .
- Only refill with new coo lant.
- Radiato r sealant must not be mixed w ith
the coo lant .
Adding coolant
Fig . 183 Eng ine co mpartment : coo lant expans ion ta nk
cove r (exa mple)
Observe the safety precautions c:::> page 233 ,
Working in the engine compar tment.
Che cking the engin e coolant l evel
.. Park the vehicle on a level surface .
.. Switch the ignition off .
240
~ 0 > 00 ID
.. Read the coolant level on the coolant expansion
tank
c:::> page 236, fig. 180 . The coolant level
must be between the markings when the en­
gine in cold. When the engine is warm it can be
slightly above the upper mark ing .
Adding coo lant
Requirement : there must be a residual amount of
coolant in the expansion tank
c:::> @ .
.. Let the engine cool down.
.. Place a clot h over the coolant expansion tank
cap and unscrew the cap counterclockwise
c:::> ,A .
.. Add coo lant mixed in the correct rat io
c:::> page 239 up to the upper marking .
.. Make sure that the fluid level remains stable.
Add more coolant if necessary .
.. Close the cap securely .
Coolant loss usually ind icates there is a leak. Im­
mediate ly dr ive your vehicle to a n author ized
Audi dealer or author ized Audi Service Fac il ity
and have the cooling system inspected. If the
cooling system is not lea king , a loss can come
from the coolant boiling through overheat ing
and being pushed ou t of the cooling system .
Lil WARNING
- The cooling system is under pressure. Do
not open the coo lant expansion tank cap
when the engine is hot. This increases the risk of burns.
-The coolant additive and the coolant can be dangerous to your health. For this reason ,
keep the coolant in the original container
and away from children. There is a risk of
poisoning.
-When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched
off, wh ich
increases the r is k of injury.
@ Note
Do not add coolant if the expans ion tank is
empty . A ir could enter the cooling system and
-
damage the eng ine . If this is the case, do not ..,.

Fuses and bulbs
The power seats* are protected via circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.
Left engine compartment fuse assignment
F ig. 208 Engine co mpartment : fuse assignment
No. Equipment
Fl ESC control module
F2 ESC control module
F3 Engine control module
M
" 0 > a, m
Engine components, engine cooling, auxili-
F4 ary heater coil relay (1 +2), secondary air
injection pump relay
FS Engine components, tank system
F6 Brake light sensor
F7 Engine components
F8 Heat oxygen sensor
F9 Engine components, exhaust door, glow
time control module
FlO Fuel injectors, fuel control module
Fll Auxiliary heater heating e lement 2
F 12 Aux iliary heater heat ing element 3
Fl3 Automatic transmission control module
F 14 Ignition coils (5-cylinder)
282
No. Equipment
FlS Horn
Fl6 Ignition coil
Fl7 E
SC contro l module, engine control mod-
ule
Fl8 Terminal
30 (reference voltage)
Fl9 Windshield wipers
F20 Horn
F22 Terminal SO diagnosis
F23 Starter
F24 Auxiliary heater heating element 1
F31 Engine
components (5 -cylinder)
F32 LED headlights
F33 Transmission fluid pump
Bulbs
Message
Your vehicle is equipped with ma intenance-free
headlights and tail lights. However, if a light bulb
needs to be replaced, please contact an author ­
ized Audi dealer or authorized Audi Service Facili­
ty.

Convertible locking retractor
Activating . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Deactivating . . . . . . . . . . . . . . . . . . . . . . . . 227
Using to secure a child safety seat . . . . . . 226
Cooling mode (climate control system) . . . . 52
Cooling system Adding coolant . . . . . . . . . . . . . . . . . . . . . . 240
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Coolant level checking . . . . . . . . . . . . . . . . 240
Coolant temperature indicator . . . . . . . . . . . 8
I ndicator light . . . . . . . . . . . . . . . . . . . . . . . 12
Crank (power top emergency operation) . . . . 36
Crash data recorder ( EDR) . . . . . . . . . . . . . . . 91
Crosshairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Cruise control system Changing speed . . . . . . . . . . . . . . . . . . . . . . 72
Preselecting speed . . . . . . . . . . . . . . . . . . . . 72
Switching off . . . . . . . . . . . . . . . . . . . . . . . . 72
Switching on.. ............. .. .. .. .. .. 71
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Current fuel consumption . . . . . . . . . . . . . . . 21
D
Data connection . . . . . . . . . . . . . . . . . . . . . . 130
Data protection . . . . . . . . . . . . . . . . . . . . . . . 132
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . . 91
Date .. .. .. .. .. ............. .. .. .. .. . 173
Date display . . . . . . . . . . . . . . . . . . . . . . . . . 173
Daytime running light . . . . . . . . . . . . . . . . . . 38
Declaration of compliance . . . . . . . . . . . . . . 293
Defrosting (windows) . . . . . . . . . . . . . . . . . . . 53
DEF (instrument cluster) . . . . . . . . . . . . . . . . 21
Deluxe automatic climate control
refer to Climate control system (automatic) .S2
Determining correct load limit . . . . . . . . . . 257
Digital compass . . . . . . . . . . . . . . . . . . . . . . . 44
Digital Rights Management . . . . . . . . . . . . . 154
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Dimming the rearview mirror . . . . . . . . . . . . 42
Directory
refer to Contacts . . . . . . . . . . . . . . . . . . . . 119
Display
c refer to Audi virtua l cockpit (instrument 00
;::: cluster) . . . . . . . . . . . . . . . . . . . . . . . . . . 18, 20 r--
~ Distance driven . . . . . . . . . . . . . . . . . . . . . . . . 21 0 r--Vl 00
Index
Driver information system . . . . . . . . . . . . 18 , 20
Indicator lights . . . . . . . . . . . . . . . . . . . . . . . 9
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
On -board computer . . . . . . . . . . . . . . . . . . . 21
Outside temperature display. . . . . . . . . . . . 17
Service interval display . . . . . . . . . . . . . . . 243
Drives
refer to Media . . . . . . . . . . . . . . . . . . 154, 162
Drive select . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Driving economically . . . . . . . . . . . . . . . . . . . 56
Driving safely . . . . . . . . . . . . . . . . . . . . . . . . 179
Driving through water . . . . . . . . . . . . . . . . . . 56
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Dust filter
refer to Pollutant filter
DVD drive (media drives)
Dynamic volume 51
155
refer to System volume . . . . . . . . . . . . . . . 177
E
E-mail
117
Economical route . . . . . . . . . . . . . . . . . . . . . 141
Electromechanical parking brake . . . . . . . . . 61
Electromechanical steering . . . . . . . . . . . . . . 89
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 89
Electronic differentia l lock . . . . . . . . . . . . . . . 86
Electronic immobili zer . . . . . . . . . . . . . . . . . . 22
Electronic stabilization control (ESC) . . . . . . 86
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 13
Sport mode . . . . . . . . . . . . . . . . . . . . . . . . . 87
Emergency assistance . . . . . . . . . . . . . . . . . 272
Emergency braking function . . . . . . . . . . . . . 61
Emergency flashers . . . . . . . . . . . . . . . . . . . . 40
Emergency fueling . . . . . . . . . . . . . . . . . . . . 232
Emergency operation Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 232
Luggage compartment lid . . . . . . . . . . . . . . 28
Power top . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Emergency release
Se lector lever . . . . . . . . . . . . . . . . . . . . . . . . 69
Emergency starting . . . . . . . . . . . . . . . . . . . 283
Emissions control system Catalytic converter . . . . . . . . . . . . . . . . . . . 233
Energy managem ent . . . . . . . . . . . . . . . . . . . 91
297

Index
Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Multifunction steering wheel . . . . . . . . . . . 19
Voice recognition system . . . . . . . . . . 19, 105
w
Warning/Indicator lights
Airbag system . . . . . . . . . . . . . . . . . . . . . . 205
Warning lights
refer to Indicator lights . . . . . . . . . . . . . . . . . 9
Warranty coverages . . . . . . . . . . . . . . . . . . . 290
Washer fluid level (indicator light) . . . . . . . . 15
Washing matte finish paint . . . . . . . . . . . . . 266
Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
What happens if you wear your safety belt too
loose? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
What happens to unbelted occupants? . . . . 188
What impairs driving safety? . . . . . . . . . . . . 179
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . 258
L oosening . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Removing the cover . . . . . . . . . . . . . . . . . . 275
Tightening specification . . . . . . . . . . . . . . 278
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Glossary of tire and loading terminology . 246
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Tire pressure monitoring system . . . . . . . 262
Tires and vehicle load limits . . . . . . . . . . . 256
Wheel wrench . . . . . . . . . . . . . . . . . . . . . . . . 272
When must the airbag system be inspected?
205
Why safety belts? . . . . . . . . . . . . . . . . . . . . . 188
W i-Fi
Aud i mus ic stream . . . . . . . . . . . . . . . . . . . 158
Audio player . . . . . . . . . . . . . . . . . . . . . . . . 158
Hotspot . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Online media . . . . . . . . . . . . . . . . . . . . . . . 159
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
also refer to Wi-Fi . . . . . . . . . . . . . . . . . . . 158
Wind deflector . . . . . . . . . . . . . . . . . . . . . . . . 35
Window regulator . . . . . . . . . . . . . . . . . . . . . 29
Windows Cleaning/removing ice . . . . . . . . . . . . . . . . 268
Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . 53
306
Windshield
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . 53
also refer to Windshield . . . . . . . . . . . . . . . 42
Windshield washer system . . . . . . . . . . 42, 243
Reservoir capacity . . . . . . . . . . . . . . . . . . . 288
Windshield wipers
Cleaning w iper blades . . . . . . . . . . . . . . . . . 43
Folding up . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 16
Replacing windshield wiper blades . . . . . . . 44
Switching on and
off . . . . . . . . . . . . . . . . . . 42
Winter operation
Car washes . . . . . . . . . . . . . . . . . . . . . . . . . 266
Cooling system . . . . . . . . . . . . . . . . . . . . . . 239
Defrosting the windows . . . . . . . . . . . . . . . 53
Removing ice from windows . . . . . . . . . . . 268
Seat heating . . . . . . . . . . . . . . . . . . . . . . . . . 53
Snow chains . . . . . . . . . . . . . . . . . . . . . . . . 259
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Vehicle battery . . . . . . . . . . . . . . . . . . . . . . 242
Windshield washer system . . . . . . . . . . . . 243
Winter tires . . . . . . . . . . . . . . . . . . . . . . . . . . 259
X
Xenon headlights . . . . . . . . . . . . . . . . . . . . . . 38
z
Zoom (map) .. .. .. .. .. ........ 18, 136, 142