2018 AUDI TT ROADSTER engine

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continue driving. See an authorized A udi deal­
er or authorized Audi Service Facility for
assistance.
Brake fluid
F ig . 18 4 Engine co mpar tment : cove r on the brake flu id
r eservo ir
Observe the safety precautions c:> .&. in Working
in the engine compar tmen t on page 233.
Checking th e brake f luid l ev el
.,. Read the brake fluid level on the brake fluid
reservoir
i:> page 236, fig. 180. The bra ke fluid
l ev el must be between the MI N and MAX mark­
ings
c:> ,&. .
The brake flu id level is mon itored a utomat ica lly.
Changing the brake fluid
H ave the b rake flu id changed regularly by an a u­
thor ized Audi dealer or au thor ized A udi Se rvice
F acility .
A WARNING
-If the br ake f luid level is be low the M IN
marking, it can impair the braking effect
and dr iv ing safety, which increase the risk of
an acc ident. Do not cont inue driving . See an
authorized Audi dealer or authorized Audi
Service Facility for assistance .
- If the brake f luid is o ld, bubbles may form
in the brake system du ring heavy braking.
Th is would impair brak ing performance and
dr iv ing safety, which increases the risk of an
acc ident.
- To ensure the brake system functions cor­
rectly, only use brake fluids that comply
Chec king and Filling
wit h VW standard 501 14 or
FMVSS-116 DOT 4.
(D Note
- If the brake f lu id leve l is a bove the MA X
marking, bra ke f luid may leak o ut over the
edge of the reservo ir and result i n damage
to the vehicle.
- Do not get any b rake fl uid on the vehicle
paint, because it w ill corrode the paint .
Battery
General warnings about batteries
Bec au se of t he complex power sup ply, all wo rk
o n batter ies such as d iscon necti ng, replac ing,
etc., sho uld
onl y be performed by an au thorized
Audi dealer or authorized A udi Service Facility
c:> &_ .
The term "veh icle ba ttery" refe rs to the 12 Volt
battery in you r vehicle .
Detailed warnings for the vehicle battery :
~
Always wear eye protection .
&
Battery acid is highly corros ive . A lways
wear protective gloves a nd eye p rotection .
®
Fire, sparks , open flame and smok ing are
forbidden.
£
A hig hly explos ive m ix ture of gases ca n
for m when ch arging b att er ies.
®
Always keep children far away from bat-
tery electrolyte and the battery.
~
Always follow the instruct ions in the oper-
ating manual.
A WARNING ,.__ -All work on the battery or electrical system in
your vehicle can result in injuries, chem ica l
burns, acc idents or burns . Because of this, all
work must be pe rformed
only by an author­
iz ed Audi dealer or authorized A udi Service
F ac ility.
..,.
241

Checking and Filling
A WARNING
California Proposit ion 65 Warning:
- Battery posts, terminals and related acces­ sories contain lead and lead compounds, chemicals known to the State of California
to cause cancer and reproductive problems .
Wash hands after handling .
Q) Note
If the vehicle will be parked for long periods
of t ime, protect it against the cold so that it
w ill not be destroyed by "freezing"
~page 242 .
Vehicle battery
The term "vehicle battery " refers to the 12 Volt
battery in your vehicle .
Not running the vehicle for long p eriods of
t ime
If you do not drive your vehicle for several days or
weeks, electrical equipment is gradually scaled
back or switched off . This reduces energy use and
ensures the veh icle w il l be able to sta rt after long
pe riods of time
i:::> page 91. Some convenience
functions, such as interior light ing or power sea t
adjustment, may not be available under certain
circumstances . These convenience functions will
be avai lab le again once you switch the ignition on
and start the engine.
Even when electrical equipment is switched off ,
the equipment can still drain the vehicle battery if the vehicle is not driven for long periods of
time. Deep draining results in a chemical reaction
that destroys the inside of the vehicle battery.
The vehicle battery must be charged every month to reduce the risk of this happen ing
i:::> page 242.
Contact an author ized Audi dealer or authorized
Aud i Serv ice Facility for more information.
Winter operati on
Cold weather places higher demands on the vehi­
cle battery . This results in reduced start ing abili ­
ty . Have the vehicle battery checked by an au­
thori zed Audi dealer or authorized Audi Service
Facility before the co ld time of year.
242
Charging the vehicle battery
Fig. 18 5 En g in e compartmen t: co nn ectors fo r a cha rger
a n d jum p start cab les
Requireme nt: only use chargers with a maximum
charging volt age of 30 amp s/14.8 Volts.
The
vehicle battery cables remain connected.
... Read the wa rnings i:::> ,& in General warnings
about batteries on page 241
and i:::> ,& .
... Switch off the ignition and all electrica l equip ­
ment .
... Open the hood i:::> page 235 .
... Open the red cover on the positive terminal
¢fig. 185.
... Clamp the charger terminal clamps to the jump
s ta rt pins
according to the instructions
c::> fig . 185 .
... Now insert the power cable for the cha rging de­
vice into the socket and switch the device on .
... At the end of the charging process, switch the
charger off and pull the power cable out of the
socket .
... Remove the charger terminal clamps.
... Close the red cover on the pos itive terminal.
... Close the hood i:::> page 235.
A WARNING
-A highly explosive m ixture of gases can form
when charg ing batteries . Only charge the
veh icle battery in well-ventilated areas.
-A drained vehicle battery can freeze at tem­
peratures around 32
QF (0 QC) . A frozen or
thawed vehicle battery must not be charged
and must not be used anymore. If ice forms,
the battery housing can crack and battery
electrolyte can leak out, which increases the
risk of an explosion and c hemical burns .
Contact an authorized Audi dealer or
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authorized Audi Service Facility for more in­
formation.
- Do not connect or disconnect the charging
cable while charging because this increases
the risk of an exp losion.
(D Tips
- Only charge the vehicle battery through the
connections in the engine compartment.
- Read all of the manufacturer's instructions
for the charger before charging the vehicle
battery.
Windshield washer system
Fig. 186 Engine compa rtment: washer flu id reservo ir cap
The windshield washer reservoir W contains the
cleaning solution for the windshie ld and the
headlight washer
system* ¢ page 236, fig . 180.
The reservoir capacity can be found in
¢page 288.
To reduce the risk of lime sca le deposits on the
spray nozzles, use clean water with low amounts
of calc ium. A lways add window cleaner to the wa­
ter. When the outs ide temperatures are cold, an
anti -freezing agent should be added to the water
so that it does not freeze.
@ Note
-The concentration of anti-freezing agent
must be adjusted to the vehicle operating
cond itions in the respective climate. A con­
ce ntrat ion that is too high can lead to vehi­
cl e damage.
- Never add radiator anti-freeze or other addi­
tives to the washer fluid.
Checking and Filling
- Do not use a glass cleaner that contains
paint so lvents, because t his could damage
the paint.
Service interval display
The service interval display detects when your ve ­
hicle is due for service .
The service interval display works in two stages:
-Inspection or oil change reminder : after a cer-
tain distance driven, a message appears in the
In fotainment system display each time the ig ­
nition is switched on or off. The remaining dis­
tance or time is disp layed briefly.
- Inspection or oil change due: if your vehicle
has reached an inspection or oil change interval
or both intervals at the same t ime, the mes­
sage
Inspection due! or Oil change due! or Oil
change and inspection due!
appears briefly af ­
ter switching the ignition on/off .
Checking service intervals
You can check the remaining distance or time un ­
t il the next oil change or next inspection. Se lect
in the Infotainment system: the
I MENU I button>
Vehicle > left control button > Service & checks >
Service intervals .
Resetting the indicator
An authorized Audi dea ler or authorized Audi
Service Facility w ill reset the service interval dis­
play after performing service.
If you have ch anged the oi l yourse lf, you must re ­
set the oil change interval.
T o reset the disp lay, select in the Infotainment
system: the
I MENUI button> Vehicle> left con­
trol button >
Service & checks > Service intervals
> Reset oil change interval.
@ Note
-Only reset the oil change indicator if the oi l
was changed.
- Following the service intervals is crit ica l to
maintaining the service life and value of
your vehicle, especially the engi ne. Even if
the mileage on the vehicle is low, do not ex­
ceed the time for the next service.
243

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 .,.

Wheels
Displaying tire pressures/temperatures
Applies to: vehicles with tire pressure monitoring system
Requirement: you must be d rivi ng the veh icle .
"'Se lect in the Infotainment system: IMENU I but­
ton
> Service & checks > Tire pre ssur e monitor­
ing > Di splay tire pressure.
- Green:
the current tire pressure and the speci­
fied t ire pressure are approximately the same .
-Yellow: the current tire pressure is too low
compared to the specified tire pressure .
The specified tire press ure is the last tire pres ­
sure that was stored
c> page 264.
Note that t he tire p ressure also de pends on the
temperature of the tire . The tire press ure in­
creases as the engine becomes wa rmer whi le
driving.
A WARNING
Read and follow the important information
and notes
c> page 263.
(D Tips
The tire pressure or temperature is not d is ­
played while the veh icle is stationary and in
adaptation mode. Dashes --.--are shown in
place of the pressu re and temperature.
(D Tire pressure loss
Applies to: vehicles with tire pressure monitoring system
-
If the Rt] indicato r light turns on, the p ressure in
at least one t ire is too low o r new sensors we re
not adapted :
[I] indicator lights turns on after turning the
ignition on
The tire pressure is too low compared to the
specified p ressure.
"' Check and store the t ire pressure(s) the next
time it is poss ible
c> page 264 .
[I] indicator light turns on while dri ving
Wheels with new sensors were not adapted or
the t ire pressure has reached a critical leve l com­
pared to the specified pressure .
264
"'Avoid unnecessary steering and brak ing maneu -
vers .
"'Adapt your dr iving sty le to the s ituation.
"' Stop as soon as possible and check the tire(s).
"'If it is possib le to continue driv ing, see an au-
thorized Audi dealer or authorized Aud i Service
Facility immediately and have your tire(s) re­
pa ired o r rep laced .
A WARNING
Read and fo llow the impo rtant info rmation
and n otes
c>page 263.
Storing new tire pressures
Applies to: vehicles with tire pressure monitoring system
Correctly stored tire pressure specifications are
necessary for reliable tire pressure monitoring.
-
It is always necessary to store the t ire pressures
whe n the t ire pressu res a re modified, fo r exam­
ple d ue to a change in load . o r when new senso rs
a re installed.
"' Before storing the t ire pressures, make su re the
tire pressures of all four t ires meet the spec i­
fied va lues and are adapted to t he load
c::> page 254, fig. 190 . Only correct and store
the pressure in tires whose temperature is ap ­
proximate ly the same as the ambient tempera ­
t u re . If the temperature of the tire is higher
than the ambient air temperature, the tire pressure must be increased approximately
3.0 PSI (0.2 bar) above the value on the st icker.
"' Switch the ignit ion on .
"'Select in the Infotainment system : IMENU! but­
ton
> Service & checks > Tire pressure monitor­
ing > Store tire pre ssure > Ye s, store now .
Af­
ter storing the t ire pressures, the t ire press ure
mon itor ing system measures the c urrent pres ­
sures while driving and stores them as the new
specified pressures .
"'If the changed tire pressures are not displayed
in the Infotainment system, drive the vehicle
for approximately 10 minutes so that the sen­ sor signa l from the wheels is received again .
During this adaptation phase, -- .- - is d isplayed
for the pressure and temperature and the tire pressure monitoring system is on ly partially

Emergency assistance
Emergency assistance
Trunk escape latch
In case of an emergency , the rear lid can be
opened from the inside using the trunk escape
latch.
Fig. 191 L uggage compartment: Trunk escape latch
• Pu sh the latch in the direction of the arrow un­
til the lock releases .
The trunk escape latch inside the rear lid is made
of fluorescent material to g low in the dark.
.&_ WARNING
The trunk escape latch is to be used only in an
emergency.
General information
• Park the vehicle as far as poss ible from moving
traffic in the event of a breakdown . In the event
of a flat tire , park the vehicle on a level surface .
It you are on a steep hill, be especially careful.
• Set the parking brake.
• Place the selector lever in the P position.
• Switch the emergency flashers on.
• Have the passengers exit the vehicle. They
should move to a safe place, for example be ­
hind a guard rail.
.&_ WARNING
Follow the steps given above . This is for your
protection and the for the safety of other driv­
ers.
272
Equipment
Vehicle tool kit/tire mobility kit/
compressor
A UD i 1
Fig. 192 Lu ggage compartmen t: cargo floor closed
The vehicle tool kit, tire mobility kit and com·
pressor are stored in the luggage compartment
u nder the cargo floor cover.
• Push on the plastic handle and lift up the cargo
floor .
• Open the cargo floor.
Completely retract the vehicle jack arm before
storing the vehicle jack* .
.&_ WARNING
Improper use of the veh icle jack can cause se­
rious personal injuries.
- Never use the screw driver hex head to
tighten wheel bolts, since the bolts cannot
attain the necessary tightening torque if you
use the hex head, potentially causing an ac­
cident.
- The factory-supplied jack is intended only
for your vehicle mode l. Under no circum­
stances should it be used to lift heavy
vehicles or other loads; you risk injuring
yourself.
- Never start the engine when the vehicle is
raised, which cou ld cause an accident .
- Support the vehicle securely with appropri ­
ate stands if work is to be performed under­
neath the vehicle; otherwise, there is a
po­
tential risk for injury.
- Never use the jack supplied with your Aud i
on another vehicle, particularly on a heavier
one. The jack is only suitable for use on the
vehicle it came with .
...

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-If the tire is too severely damaged , see an
authorized Aud i dealer or authorized Aud i
Service Facility for assistance .
@ For the sake of the environment
You can give the used tire sealant bottle to an
author ized Audi dealer or authorized A udi
Service Facility for disposal.
@ Tips
Remember to obtain a new bottle of sea lant
from an authorized Audi dea ler or authorized
Audi Service Facility after repairing a tire.
Replacing wheels
Preparation
You must complete the preparation before
changing a tire .
"' Read and follow the important safety precau-
t ions
Q page 2 72, General information .
"' Set the parking brake .
"'Se lect the "P" selec to r l ever position.
"'Lay out the vehicle tool kit Q page 2 72 and the
spare tire
Q page 279 .
A WARNING ,-
You or your passenger could be injured while
changing a wheel if you do not follow these
safety precautions:
- If you have a flat tire, move a safe distance
off the road. Turn off the engine, turn the
emergency flashers on and use other warn­
ing devices to alert other motorists.
- Make sure that passengers wait in a safe place away f rom the vehicle and well away
from the road and traffic .
- To help prevent the vehicle from moving suddenly and possibly slipping off the jack,
always fully set the parking brake and block
the front and back of the wheel diagonally
opposite the w heel be ing changed. Whe n
one front whee l is lifted off the ground,
pla cing the A utoma tic Transm ission in P
(Park) will
not prevent the ve hicle from
moving .
Emergen cy as sis tanc e
-Before you change a wheel, be sure the
ground is level and firm . If necessary, use a
sturdy board under the jack.
- Always store the vehicle too l kit, the jack
and the replaced tire in the luggage com­
partment
<=) page 183.
(D Tips
Obey all laws .
Removing the cover
Fig. 196 W heel: wh eel hu b cov er
F ig. 1 97 Wheel: wh eel bol ts with cap s
Wheel hub covers*
"'Insert the hook (from the vehicle tool kit) into
the hole on the whee l hub cover
Q fig. 196 .
"'Remove the wheel h ub cover .
Wheel bolts with caps *
"'Slide the p lastic clip (from the veh icle too l kit)
onto the cap unt il it engages
Q fig . 197.
"' Remove the cap with the p lastic clip.
275

Emerg enc y assis ta nce
Loosening the wheel bolts
Fig. 198 Chan gin g a tire : loosen t he wheel bolts
.,. Slide the wheel wrench (from the vehicle tool
k it) all the way onto the wheel bolt.
.,. Turn the wheel bolt approximately one turn to
the left -arrow-. To reach the required torque, hold the end of the wheel wrench. If the wheel
bolt will not loosen, press carefully on the
whee l wrench with your foot. Hold onto the ve­
hicle securely while during this and make sure
your stance is stable .
A WARNING
To reduce the risk of an accident, only loosen
the wheel bolts gently (one turn) before rais­
ing the vehicle with the veh icle jack*.
Raising the vehicle
A ppl ies to: ve hicles w ith vehicle jack
- ,t.------,:
Fig. 199 Sill: markings (examp le)
276
Fig. 200 S ill : pos ition ing the vehicle jack
.,. Place the veh icle jack* (vehicle tool kit) on a
firm s urface. Use a f lat, stab le support if neces­
sary. On a slippery surface such as ti le, you
should use a non-slip pad (such as a rubber
mat) <=>& .
.,. Find the marking on the sill that is closest to
the tire that will be changed
c> fig. 199. Behind
the marking, there is a lifting point on the side
sill for the vehicle jack* .
.,. Turn the vehicle jack* located u nder the mount ­
ing point on the sill to raise the jack until its
arm
(D c> fig. 200 i s located under the desig­
nated mou nting point .
.,. Align the vehicle jack* so the a rm (!) engages in
the designated mounting point in the side sill
and the base @lies flat on the ground. The
base @ must be directly under the mounting
point @.
.,. Continue raising the vehicle jack* until the
wheel lifts off the ground slightly.
A WARNING
- Make sure the vehicle jack* is stable . There
is a risk of injury when the ground is s lick or
soft, because the vehicle jac k* could sl ide or
sink.
- On ly raise your vehicle w ith the vehicle jac k*
provided by the factory. If you use a ve hicle
j a ck designed for anothe r vehicle, your veh i­
cle can slide and cause injury .
- Posi tion the veh icle jack* only at the des ig­
nated mounting points on the side sill and
align the jack . Otherwise, the vehicle jack*
could slip and cause an injury if it does not
have sufficient hold on the vehicle.
- To reduce the risk of an accident, never start
the engine when the vehicle is ra ised.