2018 AUDI TT ROADSTER engine coolant

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 ..,.

Wheels
and the tire pressures specified
on the label on the driver's side
B­
pillar, always follow the specifica­
tion on the B-pillar label
¢ page 254, fig. 189.
Make sure that the tire designa­
tion on your tire matches the des-
Model/ Tire designation
ignation on the tire pressure label
and the tire pressure table.
The following table lists recom­ mended tire pressures in cold
tires according to the load and
the size of the tires installed.
Tire pressure
Engine Normal load Maximum load
(up to 2 people)
front
PSI
TT : 245/45 R17 95Y 32
2.0 l
245/40 R18 93H 32
4-cylinder
245/40 R18 93Y 32
245/35 R19 93Y 35
255/30 R20 92Y 35
A WARNING
Please note the important safe­
ty precautions regarding tire
pressure ¢ page 254 and load
limits¢ page 256.
Tires and vehicle load limits
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle
that is overloaded will not handle
well and is more difficult to stop.
Overloading can not only lead to loss of vehicle control, but can al­
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
256
kPA
220
220
220
240
240
rear front rear
PSI kPA PSI kPA PSI
29 200 33 230 30
29 200 33 230 30
29 200 33 230 30
32 220 35 240 32
32 220 38 260 32
and sudden deflation that can
cause the vehicle to crash.
kPA
210
210
210
220
220
Your safety and that of your pas­
sengers also depends on making
sure that load limits are not ex­
ceeded. Vehicle load includes ev­
erybody and everything in and on
the vehicle. These load limits are
technically referred to as the vehi­
cle's
Gross Vehicle Weight Rat­
ing
("GVWR").
The "GVWR" includes the weight
of the basic vehicle, all factory in­
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
plus maximum load. The maxi­
mum load includes the number
of .,.

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
scope of maintenance and repairs which can be
carried out by vehicle owners.
Al so, sa fety a nd
en vir onment al
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transm ission parts wh ich an owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, test ing devices and other
equ ipment available to specially trained work­
shop personnel in order to assure proper per ­
formance, rel iability and safety of the veh icle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliability of your
veh icle and even void your vehicle warranty .
Therefore, proof of servicing in accordance with
the ma intenance sc hedule may be a condition for
upho ld ing a possib le wa rranty claim made within
the warranty period.
Above all, operational safety can be adversely af­
fected, creating unnecessa ry risks fo r you and
your passenger.
If i n doubt about any servicing, have it done by
your author ized Audi dealer or any other properly
equ ipped and qua lified workshop. We strongly
urge yo u to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled ma inte­
nance and necessary repairs. Your dealer has the
facilities, origina l parts and trained specialists to
keep your vehicle running properly .
Performing limited m aint ena nc e y our self
The follow ing pages describe a lim ited number of
p rocedures w hich can be per formed on your ve hi­
cle with ordinary tools, should the need arise and
trained personnel be unavai lable . Before per­
forming any of these procedures, always thor­
ough ly read a ll of the app licab le text and carefu l­
ly follow the instructions g iven . Always rigorously
observe the
W ARNING S provided .
Before you ch eck anything in the engine com ­
partment , always read a nd heed all WARNIN GS
c> & and c> & in Working in the engine compart­
ment on page 233 . Con
sum er In form ation
A WARNING
--
- Ser ious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extremely careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never risk pe rsonal inj ury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fu lly famil iar with these
or other proced ures with respect to the ve­
h icle, or are uncerta in how to pro ceed.
- Do not do any work without the proper tools
and eq uipment. Have the necessary wo rk
done by your authorized Audi dealer or an­
other proper ly equipped and qualified work­
shop.
- The engine compartment of any motor vehi ­
cle is a potentially hazardous area . Never
reach into the area around or touch the radi­
ator fan.
It is temperature controlled and
can switch on suddenly
-even when the en­
g ine is off . The radiator fan switches on au­
tomatically when the coolant reaches a cer­
tain tempe rature and will cont inue to run
until the coolant temperature d rops.
- Always sw itch off the ignition before anyone
gets under the vehicle.
- Always support your veh icle with safety
stands if it is necessary to work underneath
the vehicle. The jack suppl ied with the veh i­
cle is no t adequate for this pu rpose and
could collapse caus ing serious personal in­
jury.
- I f you must wor k unde rneath the vehicle
with the wheels on the ground, always make
sure the vehicle is on level ground, that the
wheels are always securely blocked and that
the engine cannot be started.
- Always make sure the transmission se lector
lever (automatic transmiss ion) is in P (Park
position) and the park brake is applied.
II>
291

Consum er Info rmation
@ For the sake of the environment
- Changing the engine settings wi ll adverse ly
affect emission leve ls. Th is is detrimental to
the env ironment and increases fuel con ­
sumption.
- Always observe environmenta l regu lations
when disposing of o ld engine o il, used brake
flu id, d irty engine coolant, spent batteries
or worn out tires.
- Undeployed airbag modules and pretension­
ers might be classif ied as Perchlorate Mate­
rial -spec ia l handl ing may apply, see
www.dtsc.ca.gov/hazardouswaste/perch lo­
r ate. When t he vehicle or pa rts of t he re­
stra in t sys tem including a irbag modu les
s a fe ty be lts wi th prete nsione rs ar e s crap ­
ped, a ll applicab le laws and reg ulations
must be observed. Your a uthorized Audi
dealer is familiar with these requirements
and we recommend that you have your deal­
er perform this service for you.
Accessories and technical changes
Additional accessories and parts
replacement
Always consult on authorized Audi dealer before
purchasing accessories.
Audi ve hicles that are constructed with advanced
materials like Steel/Alum inum (Hybrid construc­
tion), Aluminum (Aud i Space Frame), and/or A lu­
minum/Carbon F iber (Ultra Advanced L ight
We ight Materials) are as un ique as the ir drivers .
Therefo re, the ava ilability of certain parts needed
for repair, restorat ion, or reco nstr uction w ill be
rest ric ted, or p arts w ill be unav ailable, if the ve ­
h icl e is not repa ired a t an a uth o rized Aud i colli­
sion repair facili ty . This includes but is not limit ­
ed to structura l parts w hic h require specia lized
training and equipment to restore their crash ­
worthiness back to the orig inal NHTSA and IIHS
performance.
Your vehicle incorporates the latest safety design
features ensuring a hig h standard of active and
passive safety.
292
This sa fety could be compromised by non -ap ­
proved changes to the vehicle . For t his reason, if
parts have to be rep laced, p lease observe the fol ­
l owing points when install ing additional accesso ­
ries:
Approved Audi accesso ries and gen uine A udi
parts are avai lab le from a uthorized Aud i dea le rs .
These dea le rs al so have t he necessa ry fa cilit ies,
tools and trained specialists to install the parts
and accessories properly .
A WARNING
Using the wrong spare parts or using non -ap ­
p roved accessories can cause damage to the
vehicle and serious personal i njury.
- Use on ly accessories expressly approved by
Aud i and genuine Audi spare parts
- These parts and accessor ies have been spe­
cially des igned to be used on your vehicle.
- Do not use license p late brac kets in the
front area that are d if f erent from the one
installed at the factory, or add additional li­
cense plate brackets.
- Never install accessor ies such as telephone
cradles or beverage holders on airbag covers
or w ith in the airbag dep loyment zones. Do­
ing so will increase the risk of injury if a ir­
bags are triggered in an accident!
- Before you check anyth ing in the eng ine
compa rtme nt, always read a nd heed all
WARN INGS
~page 233.
@ Note
- If items other than genu ine A udi spare
parts, add-on equipment and accessory
i t ems are used o r if repa ir wor k is not per­
formed according to specified methods, th is
c an resul t in seve re damage to you r vehi­
cl e's eng ine a nd body ( such as cor rosion)
and adve rsely aff ec t your ve hicle's war ran ty.
- I f emergen cy rep air s m ust be pe rformed
elsew here, have the vehicle exam ined by an
au thorized A ud i dealer as soon as possib le .
- Th e manuf acture r ca nnot be held liable fo r
d amage wh ich occu rs du e to fail ure to com ­
ply with these stipulations.

Index
Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . .
239
Starting . . . . . . . . . . . . . . . . . . . . . . . . . 58, 59
Starting with jumper cables . . . . . . . . . . . 283
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Engine compartment
Opening/closing the hood . . . . . . . . . . . . .
235
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Safety precautions . . . . . . . . . . . . . . . . . . . 233
Engine control ( indicator light) . . . . . . . . . . . 14
Engine oil
Adding . . . . . . . . . . . . . . . . . . . . . . . . . . . .
236
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Checking oil level . . . . . . . . . . . . . . . . . . . . 236
Consumption . . . . . . . . . . . . . . . . . . . . . . . 236
Indicator light . . . . . . . . . . . . . . . . . . . . 12, 15
Engine speed limitation (indicator light) . . . 15
Entering characters/numbers (speller) . . . . . 99
Entering letters (speller) . . . . . . . . . . . . . . . . 99
Environment
Proper disposal of drained engine oil ... .
Unleaded gasoline .................. .
E xterior lighting
Exterior mirrors
238
229
38
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Dimming ....... ................ ..... 42
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
External voice operation......... .... .. . 110
F
Factory default settings (MMI) 174
Fader(sound) .. .. ............. .... .. . 177
Fa sten ing
Booster seats . . . . . . . . . . . . . . . . . . . . . . .
223
Convertible child safety seats . . . . . . . . . . 222
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 221
Fast forward ing/rew inding (audio/video
file) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
162
Fast forwarding (audio/video file) . . . . . . . . 162
Fast route
Favorites Media 141
165
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 136
Telephone.......................... 116
Federal Communications Commission (FCC) 293
Fi le formats (media drives) . . . . . . . . . . . . . 168
298
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Fog lights/rear fog light(s) . . . . . . . . . . . . . . 38
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Footwell lighting . . . . . . . . . . . . . . . . . . . . . . 40
For the sake of the environment
Environmentally-friendly driving . . . . . . . .
56
Fueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Leaks..... .... .. .. .. ............. .. 234
Free text search . . . . . . . . . . . . . . . . . . . . . . 101
Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 135
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . 120
Freeze protection
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . .
239
Frequency band ..... .. ........... 149, 151
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . .
198
How they work . . . . . . . . . . . . . . . . . . . . . . 203
Frontal collisions and the laws of physics . . 188
Front seats
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . .
181
Child restraints in the front seat . . . . . . . . 195
also refer to Seats . . . . . . . . . . . . . . . . . . . . 46
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
229
Additives. . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Blended gasoline . . . . . . . . . . . . . . . . . . . . 229
Current fuel consumption . . . . . . . . . . . . . . 21
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fuel tank capacity . . . . . . . . . . . . . . . . . . .
288
Gasoline additives . . . . . . . . . . . . . . . . . . . 230
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 15
Saving fuel . . . . . . . . . . . . . . . . . . . . . . . 56 , 78
Fueling
Fuel filler door emergency release . . . . . .
232
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fuel tank capacity . . . . . . . . . . . . . . . . . . .
288
Opening the fuel filler door . . . . . . . . . . . . 230
With reserve canister (emergency fueling) 232
Fuses
Assignment . . . . . . . . . . . . . . . . . . . . . . . .
281
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 280
G
Garage door opener (Homelink) . . . . . . . . . . 30
Garment hooks . . . . . . . . . . . . . . . . . . . . . . . . 49