engine overheat AUDI TT ROADSTER 2014 User Guide

172 Checking and filling
@ For the sake of the environment
- Before changing your oil , first make sure
you know where you can properly dispose
of the used o il.
- Always dispose of used engine oil proper­
l y. Do not dump it on garden soi l, wood­
ed areas, into open streams or down
sewage dra ins.
- Recycle used engine oil by taking it to a
used engine o il collection facility 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 pro­ tects the engine from freezing in the winter.
The cooling system is sea led and generally re­
q uir es little attention .
The cooling system has been filled at the fac ­
tory with a pe rmanent coolant which does not
need to be c hanged. The coolant consists of a
mixture of spec ia lly condi tioned water and the
manuf acturer 's glyco l-b asedcoolan t addi -
tive G l3 antifreeze with ant icorros ion addi ­
tives (50% for USA models ; 60% for Canadian
mod els). This mixture both assures the nec es­
sary frost protection and p rotects metal com ­
ponents in the engine's cooling system from
corrosion and scaling . It a lso raises the boil­
ing point of the coo lant .
Do not red uce the concentration o f the coo l­
ant in the summer by adding plain water.
The
proportion of coolant add itive must be at
l e a st 50 % but not more than 60 %
to main­
tain antifreez e protection and cooling efficien­
cy . If the coolant frost prote ct ion is too low,
the coo lant cou ld free ze and damage the veh i­
cle hea ting and eng ine cooling system.
For yea r-round d riving, antifreeze is added at
the fac to ry for temperatures down to:
-- 31°F( -35°C)USA
- -40 °F ( -40 °C) Canada. If
you must add coolant, use a mixture o f wa ­
ter and coolant additive . Mixing the coo lant
additive with distilled water is recommended.
A WARNING
-
Before you c heck anything in the engine
compartment, always read and heed a ll
WAR NINGS
c::, & in Working in the engine
compartment on page 165.
(D Note
- Before winter sets in, have the coo lant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­ m ate conditions . This is especia lly impor­
tan t if you live in a reg io n wher e the win ­
t er is ex treme ly col d. If ne cessa ry, i n­
crease the proportion of coo lant add itive
t o 60%.
- Whe n adding coolant additive to yo ur
c oolin g sys tem, remembe r:
- We recommend using on ly coolant ad ­
d itive Gl2++ or Gl3 for your vehicle .
This coolant additive is avai lab le at au­
thor ized Audi dealers . Other types of
ant ifre eze can s ignificant ly reduce cor ­
rosion prote ctio n. T he resulti ng cor ro­
sion can ca use a lo ss o f coolan t and se­
rio us en gine d amage.
- Do not add any ty pe of rad iator leak seal­
a n t t o y our vehicle 's engine coolant.
Add ing radiator rep air fl uid may adverse ­
ly affect the function and performance of
yo ur cooling system and co uld resu lt in
damage not covered by yo ur New Vehicle
Limited Warranty.
-

Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 134 Eng ine compartme nt: cover o n the coolant
expansion tank
Before you check anything in the engine com­
partment,
a lway s read and he ed all WARN ­
INGS ¢ A in Working in the engine compart­
ment on page 165.
.,. Park your vehicle on a level surface.
.,. Switch the ignition
off .
.,. Read the coola nt level at the coolant expan­
s ion tank
¢ page 167, fig . 130. With a cold
engine, it must be above the "min" mark.
With a hot engine, it can be a l ittle above
the indica ted range.
The location of the coolant expans ion tank
can be seen in the engine compar tment illus­
tration
¢page 167.
To obtain an accurate read ing, the eng ine
must be switched
off.
The expans ion tank in your vehicle is equipped
with a n electric coolant level sensor.
When the coo lant level is too low, the warning
light in the Auto-Check System¢
page 17 will
illum inate until you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolant leve l
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cool ing
system. In the event of coolant loss, the cool­
i ng system should be inspected immediately
Checkin g and fillin g 173
by your authorized Audi dea ler . It is not
enough merely to add coo lant .
In a
s ealed system, losses can o ccu r on ly if
the boiling point o f the coo lant is exceeded as
a res ult of overheating.
(D Note
Do not ad d any type of radiator leak sea l­
ant to your veh icle's engine coo lant. Add­
ing radiator repa ir flui d may adverse ly af ­
fect the function and performance of yo ur
cooling system and could result in damage
not covered by your New Vehicle Limited
War ranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the engine com ­
partment,
alway s read and heed alt WARN­
INGS ¢ A in Working in the engine compart­
ment on page 165.
... Tu rn off the engine .
.,. Let the engine cool down.
.,. Place a thick rag ove r the coolant expansion
tank ¢
page 173, fig. 134 and carefully
twist the cap counter-clockwise ¢_& .
.,. Add coo lant m ixed in the correct rat io
¢ page 172, Coolant .
.,. Twist the cap on aga in tightly.
Rep lacement engine coo lant must conform to
exact specificat ions¢
page 172, Coolant.
We recommend using only coolant add itive
Gl2 ++, Gl3 or in an emergency Gl2+. Do not
use a different additive. In an emergency use
plain water until you can get the correct addi­
tive and can resto re the correct ratio . Th is
shou ld be done as soon as possib le.
If you have lost a cons iderab le amount of
coolant, then you should add cold ant ifreeze
and co ld wate r on ly when the engine is cold.
Always use
new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Ex-
cess coolant will be fo rced o ut through the ..,_
•
•

232 Index
Temperature ............ ... .. .... .. 69
Ventilation .... ........... ... .... .. 68
C lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Clutch overheating . . . . . . . . . . . . . . . . . . . 87
Cold ti re inflation pressure ..... ... ... . 185
Com ing home .............. .... ..... 49
Compass mirror ............ ... .... .. 58
Compl iance .. ............. .. .. .. .. . 229
Consumer Information . . . . . . . . . . . 99, 226
Contacting NHTSA .......... ... .... .. 99
Controls Cleaning . .... ........... .. .. .... . 157
Controls and displays .................. 8
Convenience close/open feature Pow er top . . . . . . . . . . . . . . . . . . . . . . . . . 43
Windows . ................. ..... .. 40
Conve rtible child safety seats .. .. .... . 135
Convertible locking retractor Activating .................... ... . 140
Deactivating .................. .... 140
Using to secure a ch ild safety seat 138, 140
Convertible top .. .......... .. .. .... .. 41
Automatic convertible top ............ 43
Eme rgency operation . . . . . . . . . . . . . . . . 44
General information ........... ..... 41
manual convertible top ........ .. .. .. 42
Warn ing/ indictor lights .............. 17
W ind deflecto r ..................... 44
Cooling system . . . . . . . . . . . . . . . . . . . . . 172
Expansion tank ... ..... ..... .. .. .. . 173
Cornering light ............ .. .. .. .. .. 49
C ruise control . . . . . . . . . . . . . . . . . . . . . . . 78
Changing speed . . . . . . . . . . . . . . . . . . . . 79
Pr esetting your speed . . . . . . . . . . . . . . . 79
Switching
off .............. .. .... .. 79
Sw itching on ....................... 78
Warning/indicator lights ... .. .. .. .. . . 21
Cup holder . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Current fuel mileage 23
D
Damping
refer to Audi magnetic ride . .. .. .. .. . . 80
Data recorder . . . . . . . . . . . . . . . . . . . . . . 142
Date display . . . . . . . . . . . . . . . . . . . . . . . . 11
Daytime running lights ................ 48 D
ecla ration of compliance
Cell phone package ................ 229
E lectronic immob ilizer .............. 229
Homelink universal remote control ... 229
Remote control key ............ .... 229
D ecorative decals
Cleaning . ..... .. ............. .... 157
D eco rative parts/tr im
Cleaning .. .... .. ............. .... 157
def What does this mean when it appears in
the tr ip odometer display? ........... 12
Defective light bulb warning ........... 20
Defrosting the windows .......... .. .. . 71
Determining correct load limit ........ 190
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . 11
Dig ital compass . . . . . . . . . . . . . . . . . . . . . 58
Dimensions . .... .. ............. .... 224
Dimming the rearview mirror .......... 53
Dipst ick
Reading the dipst ick properly ........ 170
Displays Cleaning .. .... .. ............. .... 157
D istance ......... .. .............. .. 23
Driver information system
Boost ........ .. .. ................ 26
Engine oil temperature .............. 26
Menu button . . . . . . . . . . . . . . . . . . . . . . 25
Menu display . . . . . . . . . . . . . . . . . . . . . . 24
Open door or front lid warning ........ 22
Outside temperature display . . . . . . . . . . 22
Red symbo ls ... ... ................ . 13
Service interval display . . . . . . . . . . . . . . 28
Setting ........................... 26
Sound system display . . . . . . . . . . . . . . . 22
Tr ip computer .. .................. .. 23
yellow symbols . . . . . . . . . . . . . . . . . . . . . 13
Driver seat
refer to Seating position . . . . . . . . . . . . . 93
Driving Run-flat tires .... ............. .... 203
Driving safely . .. .. ... .......... .... . 92
Driving through water ............... 151
Duplicat e key ..... ............. ..... 32
Dust filter . . . . . . . . . . . . . . . . . . . . . . . . . . 69