2018 AUDI TT ROADSTER ESP

Child sa fety
~ Push the child sa fety seat down with your fu ll
weight to get the safety be lt really tight so that
the seat cannot move forward and s ideways
more than 1 in (2.5 cm).
A lways remember: Even though your vehicle is
equipped with an Advanced Airbag system, a
child should always ride in the seat properly re­
stra ined for its age and size.
A WARNING
Not using a ch ild safety seat, using the wrong
child safety seat or improperly install ing a
child restra int increases the r isk of se rious
personal inju ry and death.
- All veh icle occupants and especially children
must be rest rained p roperly whenever riding
in a vehicle. An unrestrained or imprope rly
restra ined child could be injured by s tri king
the interior or by being ejected from the ve­
hicle d uring a sudden maneuver or impact .
An unrestrained or improperly restrained
child is also at greater risk of injury or death
through contact with an inflating airbag.
-Commercially available chi ld safety seats
are required to comply with U.S. Federa l
Motor Vehicle Safety Standard (FMVSS) 213
(in Canada CMVSS 213).
-When b uying a ch ild rest raint, se lect one
that fits your child and the vehicle .
-Only use child rest raint systems that fully
con tact the flat portion o f the seat cush­
ion. The child restraint must not tip or
lean to either side . Audi does not recom­
mend using child safety seats that rest on
legs or tube-like frames. They do not pro­
vide adequate contact with the seat.
-Always heed a ll legal requirements per­
taining to the installat ion and use of child
safety seats and carefully follow the in­
structions provided by the manufacturer
of the seat you a re us ing .
-Never let more than one child occupy a child
safety seat.
-Never let babies or older children ride in a
vehicle while sitting on the lap of another passenge r.
220
-Holding a child in your arms is never a sub­
stitute fo r a child restraint system.
-The strongest person cou ld not hold the
ch ild with the forces that exist in an acc i­
dent. The child will strike the interior of
the veh icle and can also be struck by the
passenger.
-The child and the passenger can also in­
ju re each other in an accident.
-Never install rear-facing child safety seats
or infant carriers on the front passenger
seat. A child will be seriously injured and
can be k illed when the passenger a irbag in­
flates -even with an Advanced Airbag Sys­
tem.
-The inflating airbag will h it the ch ild safety
seat o r infant ca rr ier with great force and
will sm ash the child s afety seat and child
aga inst the ba ckres t, center armres t, door
or roof.
-I f exceptional ci rcums tances requi re the use
of a forward-f acing child restrain t on the
front passenger's seat, the chi ld's safety
and well-being require that the following
special precautions be taken:
-Make su re the forwa rd-facing seat has
been designed and ce rtified by its manu­
fa ctu rer for use on a front se at with a pas­
senger front and side ai rb ag.
-Always ca refully follow the man ufa ctu rer 's
i nst ru ct ions prov ided with t he ch ild sa fety
seat or carrier.
-Always move the fron t passenger seat into
the rearmost posit ion of the passenger
seat's fo re and aft adjustment range, and
as far away from the airbag as possib le be­
fore installing the child restraint .
-Always make sure that nothing prevents
the front passenger's seat from being
moved to the rearmost position in its fore
and aft adjustment range.
-Always make s ure t hat the backrest is in
the up right pos ition.
-Never place or use any elect rical device
(such as a laptop, CD p layer, electronic
games device, powe r inverter or seat heat-
er for child seats) on the front passenger
~

Child safety
The vehicle 's safety belts alone will not fit most
chi ldren until they are at least 4
ft 9 in (57 in/
1.45 m) tall and weigh about 80 lbs (36 kg) .
Booster seats raise these children up so that the
safety belt will pass properly over the stronger
parts of their bodies and the safety belt can help
protect them in a crash .
.. Do not use the convertible locking retractor
when using the vehicle 's safety belt to restrain
a child on a booster seat .
.. The shoulder belt must lie as close to the cen­
ter of the child's collar bone as poss ible and
must lie flat and s nug on the upper body. It
must never lie across the throat or neck. The
lap belt must lie across the pelvis and never
across the stomach or abdomen . Make sure the
belt lies flat and snug . Pull on the belt to tight ­
en if necessary .
Chi ldren up to at least 8 years old (over 40 lbs or
18 kg) are best protected in chi ld safety seats de­
signed for their age and weight . Experts say that
the skeleta l structure, particularly the pelvis, of
these children is not fully developed, and they
must not use the vehicle safety belts without a
suitable child restraint.
It is usually best to put these children in appro­
priate booster seats. Be sure the booster seat
meets all applicable safety standards .
Booster seats raise the seating position of the
child and repos ition both the lap and shoulder
parts of the safety be lt so that they pass across
the child's body in the right places. The rout ing of
the belt over the child's body is very important
for the child's protection, whether or not a boos­
ter seat is used.
Never use the lap belt portion of the vehicle's
safety belt alone to restrain any child, regardless
of how big the child is. Always remember that
chi ldren do not have th e pronounced pelvic struc­
ture required fo r the proper function of lap belt
port ion of the vehicle's three point lap and
shoulder belts. The child's safety absolute ly re ­
quires that a lap belt portion of the safety belt be
fastened snugly and as low as possible around the pelvis . Never let the lap belt portion of the
224
safety belt pass ove r the child's stomach or abdo­
men .
In a crash, airbags must inflate w ith in a blink of
an eye and with considerable force. In order to do
its job, the airbag needs room to inflate so that it
will be there to protect the occupant as the occu ­
pant moves forward into the airbag .
A ve hicle occ upant who is o ut of pos it io n and too
close to the airbag gets in the way of an inflating
airbag . When an occupant is too close, he or she
will be struck vio lent ly and w ill rece ive serious or
possibly even fatal injury.
In order for the airbag to offer protection, it is
important that all vehicle occupants, especially
any ch ildren, who m ust be in the front seat be­
cause of exceptional c ircumstances, be properly
restrained and as far away from the airbag as
possible . By keeping room between the child 's
body and the front of the passenger compart­
ment, the a irbag can inflate completely and pro­
v ide supplementa l protection in certa in frontal
collisions.
_& WARNING
Not using a booster seat, using the booster
seat improperly, incorrect ly installing a boos­
ter seat or using the ve hicle safety belt im­
properly increases the r isk of serious personal
injury and death in a collision or other emer­
gency situation. To he lp reduce the risk of se­
rious personal injury and/or death:
- The shou lder belt must lie as close to the
center of the child' s collar bone as possible
and must lie flat and snug on the upper
body. It must never lie across the throat or
neck. The lap belt must lie across the pelvis
and never across the stomach or abdomen.
Make sure that the belt lies flat and snug .
P ull on the belt to tighten if necessary .
- Failur e to properly route safety belts over a
child's body will cause severe injuries in an
accident or other emergency situation
¢page 187.
- The rear side of the child safety seat should
be positioned as close as possible to the
backrest on the ve hicle seat .
-

Child sa fety
A WARNING
Always take specia l precautions if you must
install a forward or rearward-facing chi ld re­
straint on the front passenger's seat in excep­
tional situations:
- Whenever a forward or rearward-facing
child restraint is installed on the front pas­
senger seat, the
P ASS ENGER AIR B AG OFF
'-i; light must come on and stay on whenev­
er the ignition is sw itched on .
- If the
PASS ENGER AIR B AG O FF ~; light
does not come on and stay on, perform the
checks descr ibed
<=> page 205, Monitoring
the Advanced Airbag System.
- If the PA SSENGER AIR BAG OFF ~; light
does not come on and stay on whenever the
ignition is switched on the inflating airbag
will hit the child safety seat o r infant ca rr ier
with great force and will smash the child safety seat and child against the backrest,
center armrest, door or roof . Have the air­
bag system inspected immediately by your
Audi dealer.
- Improper installation of chi ld restraints can
red uce their effect iveness or even prevent
them from providing any protection.
- An improperly installed chi ld restraint can
interfere with the airbag as it deploys and
seriously injure or even kill the child.
- Always carefully follow the manufacturer's
instructions provided w ith the ch ild safety
seat or carrier.
- After checking to make sure that the child
restra int is properly installed, make certain
that the child restraint is correctly recog­
nized by the capac it ive passenger detection
system in the front passenger seat and that
the
PASSENGER AIR BAG OFF '-i; light sig­
nals the co rrect front passenge r frontal air­
bag status.
A WARNING
Forward-fac ing ch ild rest raints:
- Always make sure the forward-facing seat
has been designed and cert ified by its man­
ufact urer for use on a front seat with a pas­
senger front and side airbag .
226
--
Never put the forward-facing child restraint
up, against or very near the instrument pan­
el.
- Always move the passenger seat into its
rearmost posit ion in the seat's fore and aft
adjustment range, as far away from the a ir­
bag as poss ible before installing the for­
ward-facing chi ld restraint. The backrest
must be adjusted to an upr ight position.
- Make sure that the
PASSENGER AIR BAG
OFF
'-i; light comes on and stays on all the
time wheneve r the ign it ion is switched on.
A WARNING
Rearward-facing chi ld restraints:
- A child in a rearward-fac ing ch ild safety seat
installed on the front passenger seat will be
serious ly injured and can be killed if the
front airbag inflates
-even with an Ad­
vanced Airbag System.
- The inflating airbag will h it the ch ild safety
seat o r infant c arr ier with great force and
w ill smash the child safety seat and child
against the backrest, center armrest, door
or roof.
- Always be especially carefu l if you must in­
stall a rearward facing child safety seat on
the front passenger seat in exceptiona l cir­
cumstances.
- Make sure that the
PASSENGER AIR BAG
OFF
'-i; light comes on and stays on all the
time whenever the ign it ion is switched on.
- If the
PASSENGER AIR BAG OFF '-i; light
does not come on and stay on, have the air­ bag system inspected by your Audi dealer.
Activating the convertible locking retractor
Use the convertible locking retractor to secure a
child restraint.
A lways heed the c hil d safety seat manufacturer's
instructions when insta lling a child restraint in
your vehicle. To activate the convertib le locking
retractor:
.,. Place the chi ld restraint on a seat .
.,. Slowly pull the belt all the way out .

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
Checking and Filling Fuel
Gasoline grade
The correct gasoline grade is stated on the inside
of the fuel filler door .
The vehicle is equipped with a catalytic converter
and must only be driven with
unl ead ed g asoline.
Audi recommends using TOP TIER Detergent Gas­
oline. Additiona l information on TOP TIER Deter­
gent Gasoline can be found on the offic ial web­
site (www .topt iergas.com).
The individua l gasoline grades are differentiated
by
oc ta n e ra ting s. This value is given with (R +M)/
2 equating to AKI or in RON.
The fo llowing headings match the corresponding
sticker in the fuel fi ller door .
UNLEADED FUEL ONLY MIN. (R+M )/2 8 7
R egula r/ MIN. RON 91 Regula r
Use regu la r gasoline with minimum 87 AKI/
91 RON ~ (Di .
The max imum engine power is only reached if
prem ium gaso line 91 AKI/ 95 RON is used.
UNLEADED FUEL ONLY PREMIUM MIN . (R
+M )/2 91 / SUPER MIN. RON 95
Using prem ium gaso line with minimum 91 AKI/
95 RON is recommended.
If premium gasoline is not available, you can also
use regula r gasoline 87 AKI/ 91 RON . However
this does reduce the engine powe r sli ght ly.
{LlJ) Note
- Fill ing the tank just one t ime with leaded
fuel or other meta llic additives wi ll cause
permanent deter io rat ion to the catalyt ic
conve rter function.
- When gasoline with an octane rat ing that is
too low is used, h igh speeds o r heavy eng ine
l oad can lead to eng ine damage.
Ch eck ing and F illing
(D Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is requ ired by
the engine .
Blended gasoline
U se of g asoline cont aining alcohol or MTBE
( m eth yl tertiary butyl ether )
You may use unleaded gasoline blended with al­
cohol or MTBE (commonly referred to as oxygen­
ates) if the blended m ixture meets the fo llow ing
c riter ia:
Blend of ga soline me thanol ( wood alc ohol or
meth yl alcoh ol)
-Anti-knock index must be 87 AKI or h igher.
- Blend must contain no more than
3% metha-
nol.
- Blend must contain more than
2% co-solvents.
Blend of g asoline a nd eth ano l (g ra in a lcoh ol o r
eth yl alc ohol )
-Anti-knock index must be 87 AK I or h igher.
- Blend must not conta in more than
15% etha-
nol.
Blend of g asoline and MTBE
- Anti -knock index must be 87 AKI or higher.
- Blend must not contain more than
15% MTBE .
Seasonally a djust ed g aso lin e
Many gasoline grades are blended to perform es­
pecially well for winter or summer dr iving . Dur­
i ng seasonal change-over, we suggest that you
fill up at busy gas stat ions where the seasonal
adjustment is mo re likely to be made in t ime .
@ Note
-Methano l fuels which do not meet these re­
quirements may cause cor rosion and dam­
age to p lastic and rubbe r components in the
fue l system.
- Do not use fuels that fa il to meet the speci­
fied cr ite ria in t his chapter.
229

Checking and Filling
-If you a re unable to determine whether or
not a particular fuel blend meets the speci­
fications, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identified.
- Fuel system damage and performance prob­
lems resulting from the use of fuels differ­
ent from those specified a re not the respon­
sibility of Audi and are not covered under
the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel blends , we
recommend that you switch to unblended
fuel.
Gasoline additives
A major concern among many auto manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use.
Although gasoline grades differ from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on vital engin e
parts, such as fuel injectors and intake valves. Al­
though most gasoline brands include additives to keep engine and fuel systems clean, they are not
equally effective .
Audi recommends using TOP TI ER Dete rgent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline , please go to the official website
(www .toptiergas .com) .
After an extended per iod of us ing inadequate
fuels, carbon deposit build-ups can rob your
en­
gine of peak performance.
(D Note
Damage or malfunction due to poor fuel qual­
ity is not covered by the Audi New Vehicle Limited Warranty.
230
Refueling
Fueling procedure
Your vehicle is equipped with a capless fuel filler
system .
Fig. 172 R ight rea r sid e of the vehicle : ope ning the fuel
fil ler door
Fig. 173 R ig ht rea r sid e of t he ve hicle: fuel pum p nozz le
in ser ted
The fuel filler door is unlocked or locked by the
central locking system.
.. Press on the left side of the fuel filler door to
open
r:::;, fig . 172.
.. Insert the fuel pump nozzle all the way into the
fuel tank filler neck
r:::;, fig. 173. Make sure it is
seated correctly.
.. Begin fueling. Once the fuel pump no zzle turns
off the first time, the fuel tank is full. Do not
continue fueling, or else the expansion space in
the tank will be filled with fuel.
.. After the fuel pump has switched off, wait five
seconds before removing it to allow the rest of
the fuel to finish dripping into the fuel tank.
.. Close the fuel filler door and then press on the
left side until it latches.
The correct fuel type for your vehicle can be
found on a label located on the inside of the f uel
ll>

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
filler door . For additional info rmation on fuel,
see
~ page 229.
F or the tank capac ity in yo ur vehicle , refer to t he
Technical Data
~ page 288 .
To reduce the r isk of fuel leak ing out or vapors
escap ing, make su re t hat the fuel ta nk is closed
correct ly. O therwise
t he-¢..ij indicator light will
turn on.
I f the central lock ing system malfunct ions, the
fuel filler door may emergency release
~ page 232.
_& WARNING
An improper f uel ing p rocedure and improper
hand ling of fue l can lead to exp losions, fires,
severe b urns and other injuries .
- Do not smoke and keep away from open
flames .
- T he ig nition m ust be switched off whe n re ­
f ueling .
- Cell pho nes, radio devices and o ther radio
equipment s hou ld always be switched off
w hen refueling . Electromagnetic rays cou ld
cause sparks and start a fire .
- If you do not insert the fuel pump nozzle a ll
the way into the filler tube, then fue l can
leak out. Spilled fue l can ignite and start a
fire.
- Never get into the vehicle when refueling. If
there is an exceptional s ituation where the
vehicle must be entered, close the door and
touch a metal surface before touching the
fuel pump nozzle aga in . This will reduce the
r isk of electrostat ic d ischarge that can cause
flying sparks . Sparks can start a fire when
ref uel ing .
_& WARNING
We recommend that you do not t ransport any
fue l co nta iners in t he veh icle. Fue l cou ld leak
out of the containe r and ignite, espe cially dur ­
ing an accident. This can cause exp losions,
fires and injuries .
- If you must transport fuel in a fue l contain ­
er, please note the following:
Ch eck ing and F illing
- Always place a fue l container on the
ground before filling . Never fill the fue l
container with fuel while it is in or on the
vehicle . Electrostatic charge can occur
wh ile refueling and the fuel vapors could
i gnite .
- For fuel containers made of metal, the fuel p ump nozzle must always maintai n
contact with the conta iner to reduce the
r isk of s tat ic charge.
- Insert the fuel pump nozz le as far as pos­
s ible into the fi lle r opening w hile refuel­
ing .
-Fo llow lega l requ irements when using,
stor ing and t ransporti ng f uel conta iners.
- Make su re that the fuel containe r meets
t h e in dust ry standa rds, for example ANS I
o r ASTM F8S2 -86.
@ Note
- Remove fuel that has overflowed onto any
veh icle components immediately to reduce
the risk of damage to the vehicle.
- Never drive unt il the fuel
tank is completely
empty. The irregula r supply of fue l that re­
sults from that can cause eng ine misfi res.
U nc ombus ted fuel will ente r th e exhaus t
system and increase the risk of damage to
the cata lytic converter.
@ For the sake of the environment
Do not overfill the fuel tank, otherwise f uel
ca n leak o ut w hen the ve hicle is warming up.
(D Tips
- If adverse weat her co nd it io ns cause the f uel
filler door to freeze shut, p ress o n the cen ­
t er of the fi ller door wit h the hee l of your
hand and then try opening it again .
- Th e fuel fi ller door on yo ur vehicle does no t
lock if yo u lock the vehicle from the inside
using the central locking switch.
(D Tips
- Yo ur vehicle is eq uipped w ith a misfue ling
guard. It a llows the vehicle to be f ueled on -
ly with the correct fue l pump nozz le .
.,.
2 3 1

Check ing and F illing
be burned. Wait until no steam or coolant is
escaping.
- Keep children away from the engine com ­
partment.
- Never spill fluids on a hot engine . These flu ­
ids (such as the freeze protection contained
in the coolant) can catch fire.
- Avoid short circuits in the e lectrica l system,
especially to the battery.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ign ition is switched off, which
increases the risk of personal in jury.
- Never open the cap on the coolant expan­
sion tank when the eng ine is warm. The
cooling system is under pressure.
- To protect your face, hands, and arms from hot steam or coolant, cover the cap with a
large cloth when opening.
- Do not remove the engine cover under any circumstances. This increases the risk of
burns .
- If tests need to be performed w ith the en­
gine ru nning, there is additional danger due
to moving components (such as the ribbed
belt, a lter nator and radiator fa n) and from
the high-voltage ign it io n system.
- Do not press the accelerator pedal inadver­
tent ly if a gear is selected when the veh icle
is sta tionary and the eng ine is ru nning. Oth­
erwise, the veh icle w ill start to move imme ­
diately and t his co uld r esult in an a ccid en t.
- Pay attention to the fo llow ing warnings list­
ed whe n wo rk on the fuel system or on the
electri cal eq uipment is requ ired.
- Do not smoke.
- Never work near open flames.
- Always have a working fire extinguisher
nearby.
- All work on the battery or e lectrica l system
in yo ur vehicle can res ult in injuries, chemi­
ca l burns, accidents or burns. Because of
t h is, all wor k must be performed
only by an
autho rized Aud i dealer or authorized Aud i
Service Facility .
- To reduce the risk of electric shock and in­
jury , never touch the following components
234
when t he engine is runni ng or is being start ­
ed:
- Ig nition cable
- Other compone nts in the electron ic high-
vo ltage ig nition system
- If you must check or perform work on the
eng ine wh ile it is ru nning:
- Set the pa rking brake and p lace the selec ­
tor lever in the P (par k) position fi rst .
- Alw ays proceed w ith ext reme cau tion so
t h at clothing, jewelry or long hair do not
become ca ught in the radiator fan, fan
belt or other moving components or do
not come into contact with hot compo ­
nents. Tie back long hair before begin ning
work and do not wear clothing that can
hang dow n into the eng ine .
- Lim it your exposure to exhaust and chemi­
cals to as short a time as possible
<=> &. .
A WARNING
Ca lifo rnia Proposition 65 Warning:
- Engine exhaust, some of its const ituents,
a nd certa in veh icle components conta in or
em it chem icals know n to the State of Cal i­
fornia to ca use cancer and b irth defects and
reproductive harm. In add ition, certain flu­
ids cont ained in vehicles a nd certai n prod ­
uc ts of component we ar con tain or em it
chemica ls known to the State o f Califo rnia
to cause cancer and birth defects or othe r
reproductive harm.
- Battery posts, terminals and related acces ­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Was h ha nds after handling.
@ Note
When filling fluids, be sure not to mix the flu ­
i ds up. Otherwise severe mal functions and en­
g ine damage will occu r.
@ For the sake of the environment
You sho uld regularly check the gro und under
your vehicle in order to detect leaks quick ly. If
there are visible spots from oi l or othe r fluids,
ll-

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 ..,.