ignition AUDI TT ROADSTER 2017 Workshop Manual

Child safet y
A WARNING
Always take spec ial precaut ions if you must
install a forward or rearward-fac ing ch ild re­
straint on the front passenger's seat in excep­
tional situations:
- Whenever a forward or rearwa rd-facing
child restraint is insta lled on the front pas­
senger seat, t he
PASSENGER AIR BAG OFF
~; light mus t come on and stay on whenev­
e r t he ignition is sw itche d on.
- If the
PASSENGER AIR BAG OFF~; light
does not come on and stay on, perform the
checks described~
page 207, Monitoring
the Advanced Airbag System.
- If the PASSENGER AIR BAG OFF~; light
does not come on and stay on whenever the
ignition is switched on the inflating air bag
will hit the c hild safety seat o r infant carrier
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 ch ild restraints can
red uce their effect iveness or even prevent
t h em from p roviding any p rotection .
-An improperly installed c hild rest raint can
interfere w ith the airbag as it deploys and
seriously injure or even kill the child.
- Always carefully follow the manufac turer 's
instructions p rovided w ith the ch ild safety
seat or car rier.
- After checking to ma ke sure that the child
restra int is prope rly installed, ma ke certai n
t h at the child res traint is co rrec tly recog­
ni ze d by the c apac it ive passenger detec tion
system in the front passenger sea t and that
the
PASSENGER AIR BAG OFF~. light sig­
nals the correct front passenger 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 a irbag .
228
-Never put the fo rwa rd-facing child restraint
up, against o r very near the instrument pan­
el.
- Always move the passenge r seat into its
rearmost posit ion in the seat's fo re and aft
ad justment range , as far away from the a ir­
bag as poss ible before installing the for­
ward-facing chi ld restraint. The back res t
m ust be adjusted to an upr ight position.
- Ma ke sure that the
PASSENGER AIR BAG
OFF ~;
light comes on and stays on all the
time w heneve r the ig nition is switched o n.
A WARNING
R earward-faci ng chi ld restrain ts:
- A child in a rearward-fac ing ch ild safety seat
installed on the fron t passenger seat will be
serious ly injure d and can be killed if t he
front airbag infl ates -even with an Ad­
vance d Ai rb ag System.
- The infl ating air bag will h it t he ch ild safety
sea t or i nfan t car rier with great force an d
w ill smash the child safety seat and child
aga inst the backrest, center a rm rest, door
or roof.
- Always be especially carefu l if yo u must in ­
stall a rea rward facing child safety seat on
the front passenge r seat in exceptiona l cir­
cumstances.
- Make sure that the
PASSENGER AIR BAG
OFF ~;
light comes on and stays on all the
time wheneve r the ign it ion is switched on.
- If the
PASSENGER AIR BAG OFF~; light
does not come on and stay on, have the air­
bag system inspected by you r Audi dealer.
Activating the convertible locking retractor
Use the convertible locking retractor to secure a
child restraint.
A lways heed the chi ld safety seat manufacturer's
i nst ruct ions when insta lling a child restra int i n
yo ur vehicle. To activate the convertib le locking
r etractor:
.,. Place the chi ld restraint on a seat .
.,. Slowly p ull the belt
all the way out .

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Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
F or wo rk in th e en gine c ompar tment su ch as
ch eckin g and fi llin g flu id s, th ere is a risk of in­
j u ry , sca lding , acci dent s, a nd b urn s. Fo r this
re aso n, follow all the warnin gs and ge nera l
saf ety pr eca uti ons pr ov ided in the follow in g i n·
form ation . Th e e ng ine c ompartm en t is a d an­
ger ous a re a .
¢ ,&. .
A WARNING
- T urn the engine off.
- Switch the ign ition off .
- Set the parking brake .
- Place the selector lever in the P pos it ion.
- Let the engine cool down.
- Never open the hood when there is steam or coolant escaping from the eng ine compart­
ment, because there is a risk that you could
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 circu its in the electrical system,
especially to the battery .
- When working in the engine compartment ,
remember that the radiator fan can sw itch
on even if the ign ition is switched off , which
increases the risk of pe rsonal injury.
- Never open the cap on the coolant expan­ sion tank when the eng ine is warm . The
cooling system is under pressu re .
- 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 running, there is additional dange r due
Ch eck ing and Filling
to moving components (such as the ribbed
be lt, alternator and radiator fan) and from
the high voltage ignition system.
- Do not press the acce lerator pedal inadver­
tently if a gear is selected when the vehicle
is stationary and the engine is running. Oth­
erwise, the vehicle will start to move imme ­
diate ly and this could result in an accident .
- Pay attent ion to the following warnings list­
ed when work on the fuel system or on the
electrical equipment is required.
- Do not smoke .
- Never wor k near open flames .
- Always have a working fi re extingu isher
nearby
- All work on the battery or electrical system
in your veh icle can result in inju ries, chemi­
cal burns, acc idents or burns . Because of
this, all work must be performed
onl y by an
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk of electric shock and in­
jury, never touch the following components
when the engine is running or is being start·
ed:
- Ign it ion cable
- Other components in the electronic high -
voltage ign ition system
- If you must check or perform work on the
engine wh ile it is running:
- Set the parking brake and place the selec­
tor lever in the P (park) position first .
- Always proceed w ith extreme caution so
that clothing, jewelry or long hair do not
become caught 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 beginning
work and do not wear clothing that can hang down into the engine .
- Lim it your exposure to exhaust and chemi­
cals to as short a time as possible
¢ ,&. .
A WARNING '"--
California Proposition 65 Warning:
235

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Cooling system
Coolant
The engine cooling system is filled with a mixture
of pur ified water and coolant additive at the fac­
tory. This coo lant must not be not changed.
The coolant level is monitored through the. in­
dicator light
¢page 12. However , we do recom­
mend occasionally check ing the coo lant level
manually.
If you must add coolant, use a mixture of water
and coolant addit ive. Mixing the coolant additive
with distilled water is recommended.
Coolant additive
The coolant additive is made of anti-freez ing and
corros ion protection agents. Only use the follow­
ing coolant addit ives . These additives may be
mixed with each other.
Coolant additive Specification
G13 TL 774
J
G12++ TL 774 G
The amount of coo lant add itive that needs to be
mixed with water depends on the climate where
the vehicle will be operated. If the coolant addi­ tive percentage is too low, the coolant can freeze
and damage the engine.
Coolant addi- Freeze protec-
tive tion
Warm regions min. 40%, m in. -13 °F
max. 45% (-25 °C)
Cold regions min. 50%, max
. -40 °F
max. 55% (-40 °C)
(D Note
- Before the start of winter, have your 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 colder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive . You could damage the en-
Checking and Filling
gine. If this happens, only use water and re­
store the correct mixture ratio with the
specified coolant add it ive as soon as possi­
ble.
- Only refill with new coolant .
- Radiator sealant must not be mixed with
the coolant.
Adding coolant
Fig. 184 Engine compartment: coolant expansio n ta nk
cover
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Observe the safety precautions ¢ A in Working
in the engine comportment on page 235.
Checking the engine coolant level
.,. Park your vehicle on a leve l surface .
.,. Switch the ignition off.
.,. Read the coolant level on the coolant expansion
tank
¢ page 237, fig . 181. 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 coolant Requirement: there must be a residual amount of
coolant in the expansion tank
¢ (D .
.,. Let the engine cool down.
.,. Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
Q .&, .
.,. Add coolant m ixed in the correct rat io
¢ page 241 up to the upper marking .
.,. Make sure that the fluid level remains stable.
Add more coolant if necessa ry .
.,. Close the cap securely .
Coo lant loss usually indicates there is a leak. Im-
mediately drive your vehicle to an author ized .,..
241

Checking and Filling
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cooling system.
A WARNING
The cooling system is pressurized and can be­
come very hot. To reduce the r isk of burns
from hot coolant:
- Do not open the coolant expansion tank cap when the eng ine is hot. This increases the
risk of burns.
- Stop the engine and allow it to cool.
- Protect your face, hands and arms from es-
caping coolant and steam by covering the
coolant tank cap with a large, thick cloth.
- Turn the coolant tank cap counterclockwise
slowly and keep light pressure o n the cap.
- To reduce the risk of burns, do not allow any
antifreeze or coolant to drip onto the ex­ haust system or hot eng ine components .
T he ethylene glycol in eng ine coolant can
catch fire under certa in circumstances.
- The coo lant add itive and the coolant can be
dange rous to your health. For this reason,
keep the coolan t in the origina l container
and away from children. There is a risk of
poisoning.
- When working in the engine compartmen t,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of inj ury.
(D Note
Do not add coolant if the exp ansion tank is
empty . Air could enter the cooling system and
damage the engine . If this is the case, do not
continue driving. See an authorized Audi deal­
er or authorized Audi Service Facility for assis­
tance.
242
Brake fluid
Fig. 1 85 Eng ine compa rtment: cover o n the brake fluid
reservo ir
Observe the safety precautions ¢ A in Working
in the engine compartment on page 235.
Check ing the brake fluid level
... Read the bra ke fluid level o n the bra ke flu id
reservoir
¢ page 237, fig . 181. The brake f luid
level must be between the MIN and MAX mark­
ings ¢&_ .
The brake f lu id leve l is monito red au toma tically.
Changing the brake fluid
Have the brake fluid changed regularly by an au­
thorized Audi dea ler or authorized Audi Service
Fac ility.
A WARNING
- I f the brake fl uid leve l is below the MIN
marking, it can impair the bra king effec t
and driving safety, which increase the risk o f
an accident . Do not continue driv ing. See a n
author ized Audi dealer or authorized A udi
Serv ice Facility for assistance.
- If the brake fl uid is old, b ubbles may form
in the brake system during heavy braking.
This would impair braking performance and
driving safety, which increases the r isk of an
accident.
- To ensure the brake system functions cor­
rectly, only use brake fluids that comply
w it h VW standard SO l 14 or
FMVSS- 116 DO T 4.

Checking and Filling
Charging the vehicle battery
Fig. 186 Engine co mpa rtment : connec tors for a c harger
and jump start cab le s
Req uirement: only use chargers with a m aximum
c hargi ng vo lta ge of 30 amp s/14.8 Volt s.
The
vehicle battery cables remain connected .
.,. Read the warnings
c> .&. in General warnings
about batteries on page 243
and c> ,&. .
.,. Switch off the ignition and all electrical equip ­
ment .
.,. Open the hood ¢
page 236 .
.,. Open the red cover on the positive terminal
c> fig. 186 .
.,. Clamp the charger terminal clamps to the jump
s ta rt pin s
according to the instruct ions
c> fig . 186 .
.,. Now inse rt the powe r cable for the charging de­
v ice into the socket and sw itch the device on.
.,. At the end of the charging process, switch the
charger off and pull the powe r cab le out of the
socket .
.,. Remove the charger terminal clamps.
.,. Close the red cover on the positive term inal.
.,. Close the hood¢
page 236.
A WARNING
- A highly explosive mixture of gases can form
when cha rging batter ies. Only charge the
vehicle batte ry in well-vent ilated areas.
- A drai ned battery can freeze at tempera­
t ur es a round 32 °F (0 °C) . A frozen or
thawed veh icle battery must not be charged
and must not be used anymore. The batte ry
housing can crac k and battery acid can leak
o ut if ice fo rms, wh ich increases the risk of
an explosion and chemical burns . Contact an
244
author ized Audi dealer or authorized A udi
Service Facility for more information.
- Do not connect or disconnect the charging
cable whi le charging because this increases
the risk of an explos ion.
@ Tips
- Only charge the vehicle battery t hrough the
connect ions in the engine compartme nt.
- Read all of the manufacturer's instructions
for the charger before charging the vehicle
battery.
Windshield washer system
Fi g. 18 7 Engine compar tm ent: washer flui d res ervoir cap
The windshield washer reservoir~ contains the
cleaning so lu ti on for th e windshield and the
headlight washer system*c>
page 237 , fig. 181 .
The reservoir capaci ty is found in c> page 291.
To reduce the risk of lime scale depos its on the
spray nozzles, us e clean water with low amo unts
of calcium . Always add w indow cleaner to the wa ­
ter . When the ou tside temperatures a re cold , an
anti-freez ing agent should be added to the water
so that it does not freeze .
(D Note
-The concentration of ant i-freez ing agent
must be adjusted to the veh icle operat ing
conditions i n the respective cl imate. A con ­
cen tration that is too high can lead to vehi-
cle damage.
- Never add radiato r anti-freeze or other addi-
t ives to the washer fluid . ...,

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-Do not use a glass cleaner that contains
paint solvents, because this could damage
the pa int.
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
Infotainment system display each time the ig­
nition is switched on or off. The remaining dis­
tance or time is displayed briefly.
- Inspection or oil change due: if your vehicle
has reached an inspection or oil change interval
or both intervals at the same time, the mes­
sage
Inspection due! or Oil change due! or Oil
change and inspection duel
appears briefly af­
ter switching the ignition on/off .
Checking service intervals
You can check the remaining distance or time un­
til the next oil change or next inspection. Select
in the Infotainment system: the !MENU ! button>
Vehicle > left control button > Service & checks >
Service intervals .
(D Note
-Following the service intervals is critical to
maintain ing the service life and value of
your vehicle, especially the engine. Even if
the mileage on the vehicle is low, do not ex­
ceed the time for the next service.
- Calcu lating the time to the next oil change
i s interrupted when the vehicle battery is
disconnected~
page 271.
Checking and Filling
245

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Storing tire pressures
If the tire pressure changes or a tire is replaced,
it must be confirmed in the Infotainment sys­tem .
.,. Make sure before storing that the tire pressures
of all four t ires meet the spec ified values and
are adapted to the load~
page 254 .
.,. Switch on the ignition .
.,. Se lect in the Info tainment system: the
I M ENU I
bu tton > Vehi cle > left contro l bu tton > Ser vice
& checks > Tire pre ssure monitoring.
@ Tips
Do not store the tire press ures if snow chains
are insta lled .
Wh eel s
265

Care and cleaning
Care and cleaning
General information
Regular, proper care helps to maintain your vehi­
cle's value.
It can also be a requirement when
submitting warranty claims for corrosion damage
and paint defects on the body.
The necessary care products can be obtained
from an authorized Audi dealer or authorized
Audi Service Facility. Read and follow the instruc­
tions for use on the packaging.
A WARNING
- Using cleaning and care products incorrectly
can be dangerous to your health .
- Always store cleaning and care products out
of reach of children to reduce the risk of poi­
soning .
@ For the sake of the environment
- Preferably purchase environmentally-friend­ ly cleaning products.
- Do not dispose of leftover cleaning and care
products with household trash.
Car washes
The longer that deposits remain on the vehicle,
the more the surface may be damaged. High
temperatures such as those caused by sunlight
increase the damaging effect.
Before washing, rinse
off heavy deposits with
plenty of water.
Stubborn deposits such as bird droppings or tree
sap are best removed with plenty of water and a microfiber cloth.
Also, wash the underside of your vehicle once
road salt stops being used for the season.
Pressure washers
When washing your vehicles with a pressure
washer, always follow the operating instructions
provided with the pressure washer. This is espe­
cially important in regard to the pressure and
spraying distance . Do not direct the stream of
water directly onto seals for the side windows,
266
doors, luggage compartment lid or hood or onto
the tires, rubber hoses, insulating material, sen­
sors* or camera lenses*. Keep a distance of at
least 16 in (40 cm).
Do not remove snow and ice with a pressure
washer.
Never use cone nozzles or high pressure nozzles.
The water temperature must not be above 140 °F
(60 °().
Automatic car washes
Spray
off the vehicle before washing.
Make sure that the windows are closed and the
windshield wipers are
off. Follow instructions
from the car wash operator, especially if there
are accessories attached to your vehicle.
If possible, use car washes that do not have
brushes.
Washing
by hand
Clean the vehicle starting from the top and work­
ing down using a soft sponge or cleaning brush.
Use solvent-free cleaning products.
Washing vehicles with matte finish paint
by
hand
To avoid damaging the paint when washing, first
remove dust and large particles from your vehi­
cle. Insects, grease spots and fingerprints are
best removed with a special cleaner for matte
finish paint .
Apply the product using a microfiber cloth. To
avoid damaging the paint surface, do not use too
much pressure.
Rinse the vehicle thoroughly with water. Then
clean using a neutral shampoo and a soft micro­
fiber cloth .
Rinse the vehicle thoroughly again and let it air
dry. Remove any water residue using a chamois .
A WARNING
-
- Only wash the vehicle when the ignition is
off and follow the instructions from the car

Emerg ency assis ta nce
Repairing tires
Applies to: ve hicles w ith tire mob ility k it
Fig. 195 Compo nents of the ti re mobili ty k it
F ig . 196 T ire mo bility k it c onn ection
Requirement : the tire mobili ty kit mus t be laid
out and ready for use
o page 2 7 2.
In stall ing the t ir e mobility kit
.. Op en the cover @on the compressor
¢fig . 195 .
.. Remove the connector@) and pressu re hose ®
with pressure gauge from the housing.
• Install the compressor pressure hose ® onto
the f lange @ on the tire sea lant bottle
(D .
.. Inse rt the sealant bottle with the flange at the
bottom into the opening @ on the compresso r
cover .
.. Remove the valve cap from the fau lty tire.
.. Install the filler hose@) on the valve
(J)
ofig. 196 .
.. Connect the plug @¢ fig. 195 to a socket in
the vehicle.
.. Switch on the ignition .
Inflating a tire
.. Move the switch @ o fig. 196 on the compres­
sor into posit ion
I.
274
.. Inflate the tire to between 29 psi (200 kPA)
and 36 ps i (250 kPA) and read the pressur e on
the gauge .
.. If this tire p ressure is not reached , remove the
filler hose . Drive slowly approximately 33 ft (10
m) forward or in reverse so that the sea lant can
be distributed in the t ire. Pump up the tire
aga in ¢ ,&. .
.&_ WARNING
-Read a nd follow the manufacturer's safety
precaut ions on the compressor and in the
instructions on the bottle of sea lant .
- I f a tire p ressure of 29 psi (200 kPA) canno t
reached after inflating for 6 minutes, then
the tire is too severely damaged. Do not
continue driv ing.
- If the tire cannot be repa ired with the tire
sealant, see an authorized Audi dealer or au­
thorized Audi Service Facility for assistance.
(D Tips
Do not operate the compresso r fo r more than
six minutes continuously , or it can overheat.
Once the compressor has cooled, you can con­
tin ue to use it.
Completing
App lies to : vehicles wit h tire mob ility kit
.. Adhere the sticker that says "max. SO mph
(max . 80 km/h)" that is provided with the tire
mob ility kit with in the driver 's field of vision.
.. Stop the vehicle after driv ing for about 10 mi­
nutes and check the t ire pressure .
.. If the tire press ure is lower than 19 psi (130
kPA) , then the tire is too severely damaged . Do
not continue driving .
.&_ WARNING
Pay attention to the following after repairing
the tire:
- Do not drive faster than SO mph (80 km/h).
- Avoid hard acce leration, braking sh arply,
and fast cornering .
- The vehicle may become more diffi cult to
con trol.

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Fuses and bulbs
Electrical fuses
Replacing fuses
A fuse that has blown will have metal strips tha t
have burned through .
Fig. 206 Steer ing colu mn area : cove r
Fig. 207 Left side of the engin e com partment : fus e cover
The individual circuits are protected by safety
fuses. The fuses are located in the interior and in
the engine compartment.
Fuses in the interior
"S witch the ignition and all electrical equipment
off .
"C heck the following table to see which fuse be­
longs to the equipment ¢
page 282.
" Remove the cover ¢ fig. 206.
"Remove the plastic clip from the fuse panel
cover in the engine compartment¢
fig. 207.
"Remove the fuse using the clamp.
" Replace the blown fuse only with an identical
new one .
"Install the cover .
Fuses and bulbs
Fuses in the engine compartment
"S witch the ignition and all electrical equipment
off .
.. Check the following table to see which fuse be­
longs to the equipment¢
page 283.
.. Remove the fuse panel cover c::> fig. 207.
" Remove the plastic clip from the fuse panel
cover ¢
fig. 207.
" Remove the fuse using the clamp .
.. Rep lace the blown fuse only with an identical
new one.
Fuse color identification
Color Current rating
in amps
Black
1
Purpl e 3
Light brown 5
Brown 7.5
Red 10
Blue 15
Yellow 20
White or transparent 25
Green 30
Orange 40
&, WARNING
-
Do not repair fuses and never replace a blown
fuse with one that has a higher amp rating.
This can cause damage to the electrica l sys­
tem and a fire .
(D Note
If a new fuse burns out again shortly after you
have instal led it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili­
ty.
© Tips
- Th e following table does not list fuse loca­
tions that are not used.
- Some of the equipment listed in the follow­
ing tables applies only to certain model ver­
sions or certain optional equipment.
281