brake AUDI TT ROADSTER 2017 Service Manual

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150 lbs (68 kg) for each passen­
ger at a designated seating posi­
tion and the total weight of any
luggage in the vehicle .
The
Gross Axle Weight Rating
("GAWR") is the maximum load
that can be applied at each of the
vehicle's two axles.
The fact that there is an upper
limit to your vehicle's Gross Vehi­
cle Weight Rating means that the
total weight of whatever is being
carried in the vehicle is limited.
The more passengers in the vehi­
cle or passengers who are heavier
than the standard weights as­
sumed mean that less weight can
be carried as luggage.
The Gross Vehicle Weight Rating
and the Gross Axle Weight Rating
are listed on the safety compli­
ance sticker label located on the
driver's side 8-pillar
¢ page 256,
fig. 190.
&_ WARNING
Overloading a vehicle can cause
loss of vehicle control, a crash
or other accident, serious per­
sonal injury, and even death.
-Carry ing more weight than
your vehicle was designed to
carry will prevent the vehicle
Wheels
from handling properly and
increase the risk of the loss of
vehicle control.
-The brakes on a vehicle that
has been overloaded may not
be able to stop the vehicle
within a safe distance.
-Tires on a vehicle that has
been overloaded can fail sud­
denly, including a blowout and
sudden deflation, causing loss
of control and a crash.
-Always make sure that the to­ tal load being transported
does not make the vehicle
heavier than the vehicle's
Gross Vehicle Weight Rating.
Determining correct load
limit
Use the example below to calcu­
late the total weight of the pas­
sengers and luggage or other
things that you plan to transport
so that you can make sure that
your vehicle will not be overload­ ed.
Steps for Determining Correct Load Limit
1 . Locate the statement "THE
COMBINED WEIGHT OF OCCU-
PANTS AND CARGO SHOULD .,.
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wash operator to reduce the risk of acci­dents.
- To reduce the risk of cuts, protect yourself
from sharp metal components when wash­
ing the underbody or the inside of the wheel
housings .
- After washing the vehicle, the brak ing effect
may be delayed due to mo isture on the
brake rotors or ice in the w inter . This in­
creases the risk of an acc ident. The brakes
must be d ried fi rst w ith a few careful b rake
applications.
(D Note
- If you wash t he vehicle in an automatic car
wash, yo u m ust retract the extendable rear
spo iler* if necessary, and fold the exter ior
mir rors in to red uce the risk of damage.
Power folding e xte rior m irrors * mus t onl y
be fo lded in and ou t using the power folding
f u nct ion .
- To reduce the risk of pai nt d amage, do no t
wash the vehicle in di rect sunlig ht.
Ca re and cleaning
- To re duce the risk of damage, do not wash
the power top with a pressure washer .
- T o red uce the risk of damage to the surface,
do not use insect removing sponges, kitche n
sponges o r similar items .
- Matte finish painted veh icle components:
- To reduce the risk of damage to the sur-
face, do not use polishing agents or hard
wax.
- Never use protective wax. It can destroy
the matte finish effect .
- Do not place any stickers or magnetic
signs on vehicle parts painted with matte
finish paint . The paint could be damaged
when the stickers or magnets are re­
moved.
@ For the sake of the environment
Only wash t he veh icle in facili ties s pec ially de­
s igned for that pu rpose . This will reduce the
r isk of dirty wate r contamina ted with o il from
ente ring the sewe r sys tem.
Cleaning and care information
W hen cle aning and ca ring for individua l vehicle
components, refer to the following tables . The
info rmation contained there is simply recom ­
mendations. Fo r questions or for components t
h at are not l isted, cons ult an autho riz e d Aud i
dealer or au thorized A udi Service Fac ility . Also
fo llow the information found in¢& .
Exterior cleaning
Component Situation Solution
Windshield wiper
Deposits c::- page44
blades
Headlights /
Deposit s So
ft sponge wi th a m il d soap solutiona )
Tail light s
Sensors /
Deposits Sensors: soft cloth with solvent-free cleaning solut ion
Camera lenses Camera lenses: soft cloth w ith alcohol -free cleaning solu -
tion
Snow/ice H
and brus h/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special clean ing solution
Exhaust tail pipes Road salt Water, clea ning solution su itab le for stainless stee l, if nee-
essa ry
267

Emerg ency assis ta nce
Emergency assistance
Trunk escape latch
In cas e of an emergency , the r ear lid can be
opened from the inside using the trunk escape
latch.
Fig. 192 Luggage compartment: Trunk escape latc h
• 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
traff ic 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 hi ll, 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
I
n
AUD I }
Fig. 193 Lu ggage compa rtmen t: cargo floor closed
The vehicle tool kit, t ire mobility kit and com­
pressor are stored in the luggage compartment
u nder the cargo floo r cover .
• Push on the plastic handle and lift up the cargo
floor .
• Open the cargo floor.
Completely retract the vehicle jack a rm before
stor ing the veh icle jack* .
_& WARNING
Improper use of the veh icle jack can cause se­
rious pe rsonal injuries.
- Never use the screw driver hex head to
tighten wheel bolts, since the bo lts cannot
attain the necessa ry tightening torque if yo u
use the hex head, potentially causing an ac ­
cide nt.
- 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
yourse lf.
- 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 su itab le for use on the
vehicle it came with .

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-If the t ire is t oo severely damaged, see an
aut horized 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
authorized Audi dealer or authorized A udi
Serv ice Facility for disposal.
@ Tips
Remember to obtain a new bottle of sea lant
from an authorized Audi dea ler or authorized
Aud i Service Facility after repair ing a tire.
Replacing wheels
Preparation
You must complete the preparation before
changing a tire .
.,. Read and follow the important safety precau-
t ions
¢ page 272, General information .
.,. Set the parking b rake .
• Se lect the P selector lever pos ition .
.,. Lay out the vehicle tool kit¢
page 2 72 and the
spare tire¢
page 279 .
A WARNING
If you are cha nging a tire on a steep hill, use a
block or similar object to block the oppos ite
wheel to prevent the vehicle from moving.
A WARNING
You or your passenger co uld be injured while
chang ing 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 othe r mo to rists.
- Make sure that passengers wa it in a safe
place away from the vehicle and we ll away
from the road and traffic.
- To help prevent the vehicle from movi ng
sudden ly and possibly slipping off the jack,
always fully set t he parking brake and block
t h e whee l di agona lly o ppos ite the wheel be-
Em ergen cy a ssis tanc e
ing changed. When one front whee l is lifted
off the ground, placing the Automatic
Transmiss ion in P (Park) will
not prevent the
veh icle from moving.
- Before you change a wheel, be sure the
ground is leve l and firm.
If necessary, use a
sturdy board under the jack.
- Always store the vehicle tool kit, the jack
and the replaced tire in the luggage com­
pa rtment
¢ page 185.
@ Tips
Obey all laws.
Removing the cover
Fig . 1 97 W hee l: whee l hub cover
F ig . 1 98 W hee l: whee l bolts w ith caps
Whe el hub covers*
.,. Insert the hook (from the vehicle tool kit) into
the ho le on the whee l hub cover ¢
fig. 197.
.,. Remove the wheel h ub cover .
Wheel bolts with caps*
.,. Slide the p lastic clip (from t he veh icle too l ki t)
on to the cap unt il it engages
¢ fig . 198.
• Remove the cap with the p lastic clip .
275

Emergency assistance
CJ) Note
When removing or installing the whee l, the
r im could hit the brake rotor/ceramic bra ke
rotor* and damage the rotor. Work ca refu lly
and have a second person help yo u.
@ Tips
-W hen mounting tires w ith unidirectional
tread design
ma ke s ure the t read pattern is
po inted the r ight way
¢ page 278 .
- The wheel bolts should be clean and easy to
turn. Check for d irt and cor ros ion on the
mating s urfaces of both th e wheel and the
h ub. Remove all dirt from t hese surfaces be­
fo re re mount ing th e wheel.
Unidirectional tires
A unid irec tional tire p rofile is ident ified by a rrows
th at poin t in the run nin g dir e cti on o n the tire
sidewall. You mus t always a dhere to the speci ­
fied running d irec tion. This is necessary ens ure
the t ire's optim um perfo rmance in regar d to a d­
hes ion, r unning noise, fr iction and hydrop la ning.
T o be nefi t fu lly fro m the adv ant ages of the uni­
d irect ional tire des ign, you sho uld replace faulty
tires as soon as possi ble an d restore the correct
r u nning di rect io n on all of the tires.
Finishing
.,. Reinstall the caps on the whee l bolts if neces­
sary .
.,. Store the vehicle tool kit in its designated
place .
.,. If the re m oved whee l does not fi t in the sp are
whee l we ll, store it se cur ely in t he luggage
com partmen t
¢page 18 5.
.,. Check the tire press ure on the ins talled whee l
as soon as possible.
.,. Check the tire press ure and store it in the Info ­
ta inment system.
.,. The w heel bo lt tightening specification must be
90 ft lbs (120 Nm) . Check it as soon as poss ible
with a torq ue wrenc h. Drive ca refully unt il then .
.,. Have th e faulty wheel rep laced as quic kly as
poss ib le.
278
(D Tips
- If you not ice that t he w heel bo lts a re cor­
rode d and difficult to tur n while changing a
t ir e, t hey s hou ld be replaced befo re yo u
check the t ightening torque.
- Drive at red uce d speed unti l yo u have the
t ightening to rques checked.
· Notes on wheel changing
Please read t he informat ion¢ page 253 if yo u
are going to use a spa re t ire wh ic h is diffe re nt
fro m the t ires on your ve hicle.
After you change a tire:
- Check the tire pressure on the spa re immedi­
ately after installation.
- Have the wheel bolt tightening torque
checked with a torque wrench as soon as pos­
sible by your authorized Audi dealer or a
qualified service station .
- With steel and alloy wheel rims, the wheel
bolts are cor rectly tightened at a torque of
90 ft lb (120 Nm) .
-If you notice that the wheel bolts are corroded
and difficult to turn while changing a tire,
they should be replaced before you check the
tightening torque .
- Replace the flat tire with a new one and have
it installed on your vehicle as soon as possi ­
ble. Remount the wheel cover .
Until then, dr ive with e xtra care and at reduced
speeds.
A WARNING
- If you are going to equip yo ur vehicle wi th
t ires or r ims which diffe r from those which
we re fac to ry insta lled , th en be su re to read
t he informa tion
¢ page 253 .
-Always make sure the damage d w heel or
ev en a fla t tire and the jack and to ol kit ar e
p ro p erl y se cured in t he lug gage co mpart ­
me nt an d ar e no t lo o se in the pas senge r
co mp artme nt.
- I n an ac cident or su dde n man euver they
co uld fl y forw ard , injur ing an yone i n t he ve ­
hicle.

Fuses and bulbs
Interior fuse assignment
Fig. 208 Vehicle inter ior: fuse assignme nt
No. Equipment
Fl Power top control modu
le (Roadster)
F2 Power top control module (Roadster)
F3 ESC control module
F4 Central computer processor (MIB-2)
FS Gateway
F6 Anti-theft alarm system Climate control system, selector lever (au-
F7 tomatic transmission), parking heater,
rear window heater relay coil
Diagnos is, electrical parking brake switch,
F8 light swi tch, rain/light sensor, interior
lighting
F9 Steering column switch module
Fl0 Display
F ll Haldex clutch
F12 MMI area
F 13 Adaptive dampers control module
F14 Climate control system blower
FlS Electronic steering co lumn lock
F16 MMI components, safety be
lt microphone
(Roadster)
282
No . Equipment
F17 Instrument cluster
F18 Rearview camera
F19 Convenience key system control module
F20 Power lumbar support adjustment
F22 Front passenger's side neck heating (Road-
ster)
F23 R
ig ht exterior lighting, on-board compute r
(right)
F 25 Driver's s
ide door (for example power win-
dows)
F26 Seat heating
F28 AMI H igh med ia port
F29 On-board computer
F31 Left on-board computer
F32 Driver assistance systems
F33 Airbag
Socket relay, interior sound, back-up light
F34 switch, temperature sensor, oil level sen-
sor
Diagnosis, headlight range control system,
F35 air quality sensor, automatic dimming
rearview mirror
F36 Right cornering light/ r ight LED-h eadlight
F37 Left cornering light/ left LED-headlight
F38 E
ng ine control module, ESC control mod-
ul e
F39 Front passenger's side door (for example
power windows)
F40 Cigarette lighter, sockets
F41 SCR relay and delivery unit
F42 Central locking area
F43 On-board computer
F45 Power adjustable driver's side seat
F46 Driver's side neck heat ing (Roadster)
F49 Starter, clutch sensor
FS0 ESC valves
F53 Rear window defogger
The power seats* are protected v ia
circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.

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Left engine compartment fuse assignment
Fig. 209 Engine compartment: fuse ass ignment
No. Equipment
Fl ESC control module
F2 ESC control module
F3 Engine control module
Engine cooling, engine components, auxili -
F4 ary heater coil re lay ( 1+2), secondary air
injection pump relay
FS E
ngine components, tank system
F6 Brake light sensor
F7 Engine components
F8 Oxygen sensor
F9 Engine components, exhaust door, glow
time control module
FlO Fuel injectors, fuel control module
Fll Auxiliary heater heating element 2
F 12 Auxiliary heater heating e
lement 3
F13 Automatic transmission cont rol module
FlS Horn
F16 Ignition coil
F17 ESC control module
, engine control mod-
ule
F18 Term inal 30 (reference voltage)
Fuses and bulbs
No . Equipment
Fl9 Windshield wipers
F20 Horn
F22 Terminal SO diagnos
is
F23 Starter
F24 Auxiliary heater heating element 1
F3 2 LED headlights
Bulbs
Message
Your vehicle is equ ipped with maintenance-free
headlights and tail lights . However, if a light bulb
needs to be replaced, p lease contact yo ur author­
ized Audi dea ler or authorized Audi Service Facili­
ty.
283

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When jump starting or charging the battery,
never connect the negative ground cable to
the battery negative post because the battery
manager system must be able to detect the
battery's state of charge. Always connect the
negative ground cable to the negat ive ground
post of the battery manager control unit .
Use of jumper cables
Make sure to connect the jumper cable clamps in
exactly the order described below!
Fig. 210 Engine compartment: connectors for jump start
cables and c harger
Fig. 211 Jump starting w ith the battery of another vehicle :
A -discharged vehicle battery, B -booster battery
The proc edure desc ribed below for connecting
jumper cables is intended to provide a jump start
for your vehicle.
Vehicle with discharged battery:
.. Turn off lights and accessories, move lever of
automatic transmission to N (Neutral) or P
(Park) and set parking brake .
Connect POSITIVE(+) to POSITIVE(+) (red)
.,. Open the red cover on the positive terminal
~fig. 210.
Emergency situations
1. Connect one end of the red positive cab le on
the
jump start bolt~ fig. 211 (D (bolt und er
the red cover= "posit ive") of the veh icle to be
sta rted @.
2. Connect the other end to the posit ive termi-
nal @of the booster battery @.
Connect NEGATIVE (-) to NEGATIVE (- )
(black)
3. Connect one end of the black negative cable
to the negative terminal @ of the booster
battery @.
4. Connect the other end to the
jump start pin
@ ("negative") of the vehicle to be started
@.
Starting the engine
.. Start the engine of the vehicle with the booster
battery @. Run the eng ine at a moderate
speed .
.,. Start engine w ith discharged vehicle battery @
in the usual manner.
.,. If the engine fails to start, do not keep the
starter cranking for longer than 10 seconds.
Wait for about 30 seconds and then try again .
.. With engine running, remove jumper cables
from both vehicles in the exact
reverse order .
.. Close the red cover on the positive terminal.
The battery is vented to the outside to prevent
gases from entering the vehicle interior . Make
sure that the jumper clamps are well connected
with their metal parts in full contact with the battery term inals .
A WARNING
To avoid ser ious personal injury and damage
to the vehicle, heed all warnings and instruc­
tions of the jumper cable manufacturer.
If in
doubt, call for road service.
- Jumpe r cables must be long enough so that
the vehicles do not touch .
- When connecting jumper cables, make sur e
that they cannot get caug ht in any moving
parts in the engine compartment.
- Before you check anything in the engine
compa rtment, always read and heed all
WARNINGS ~
page 235 .
285

Emergency situations
(D Note
Improper hook -up of ju mper cables can r uin
the generato r.
- Always con nect P OSITIVE( +) to POS ITI VE
( + ), and NEG ATI VE( -) to NEGATIVE( -)
ground post of t he battery manage r contro l
u nit .
- Check that a ll sc rew p lugs on the battery
cells are sc rewed in firmly . If not, t ighten
plugs p rior to connect ing clamp o n negat ive
b attery t erminal.
- Please note t hat the procedure fo r con nect ­
i ng a jumper cable as desc rib ed above ap ­
plies specifica lly to the case of yo ur vehicle
being jum p starte d. When you a re giv ing a
ju mp sta rt to anothe r vehicle, do
not con­
n e ct t he neg ative( -) ca b le to the neg ative
(- ) termin al o n t he dis ch arged battery @
¢
fig . 21 1. In ste ad, securely connec t the
negative (-) cab le to either a so lid metal
compo nent that is f irm ly bolted to the e n­
gine block o r to the engine bloc k itself. If
the battery that is bei ng cha rged does not
vent to the outside, escap ing battery gas
could ignite an d exp lode!
Towing with a tow truck
General hints
Your Audi requires special handling for towing.
The fo llow ing informa tion is to be used by com­
mercial tow truck operators who know how to op­
era te the ir equipmen t sa fe ly .
- Never tow your Audi. Towing will cause dam­
age to the engine and transmi ssion.
- Never wrap the safety chains or winch cables
around the brake l ines .
- To prevent unnecessary damage, your Audi
must be transported with a flat bed truck.
- To load the vehicle on to the flat bed , use the
towing loop found in the vehicle tools and at­
tach to the front or rear anchorage
¢ page 286 and ¢ page 287.
286
A WARNING
A veh icle being towed is not safe for passe n­
ge rs . Neve r allow a nyone to ride in a vehicle
be ing towed, fo r any reason .
Front towing loop
Fig. 212 Fron t bumper : cover
Fi g. 2 13 Fron t bumper : install ing the tow ing loop
The threaded opening for the towing loop is lo­
cated behind a cover on the rig ht side of the front
bumper .
.. Remove the towing loop f rom the vehicle too l
kit¢
page 272.
.. Press inward on the
upper left side of the cap
to remove i t from the bumper ¢
fig. 212 .
.,. Tighten the towing loop in the threaded o pen­
ing until it s tops ¢
fig. 213 and then tig hten it
w it h a wheel w re nch.
.,. After usi ng, p lace the tow ing loop b ack in the
veh icle tool kit.
A WARNING
If t he t ow ing l oop is not tig htened unt il it
stops when installing, the threads may be pu lled out when towing the vehicle and that
could cause an accident .
-

Consumer information
scope of maintenance and repairs which can be
carried out by vehicle owners.
Also, safety and
environmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
gine and transmission parts which an owner can
perform .
Maintenance, adjustments and repairs usually re­
quire special tools, testing devices and other
equipment available to specially trained work­
shop personnel in order to assure proper per­
formance, reliability and safety of the vehicle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliability of your
vehicle and even void your vehicle warranty.
Therefore, proof of servicing in accordance with
the maintenance schedule may be a condition for
upholding a possible warranty claim made within
the warranty period.
Above all, operational safety can be adversely af­
fected, creating unnecessary risks for you and
your passenger.
If in doubt about any servicing, have it done by
your authorized Audi dealer or any other properly
equ ipped and qualified workshop. We strongly
urge you to give your authorized Audi dealer the
opportunity to perform all scheduled mainte­
nance and necessary repairs. Your dealer has the
facilities, original parts and trained specialists to keep your vehicle running properly.
Performing limited maintenance yourself
The following pages describe a limited number of procedures which can be performed on your vehi­
cle with ordinary tools, should the need arise and
trained personnel be unavailable. Before per­
forming any of these procedures, always thor­
oughly read all of the applicable text and careful­
ly follow the instructions given. Always rigorously
observe the
WARNINGS provided.
Before you check anything in the engine com­
partment, always read and heed all WARNINGS
c> & and c> & in Working in the engine compart­
ment on page 235.
294
A WARNING
-
- Serious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extremely careful when working
on the vehicle. Always follow commonly ac­
cepted safety practices and general com­
mon sense. Never risk personal injury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fully familiar with these
or other procedures with respect to the ve­ hicle, or are uncertain how to proceed.
- Do not do any work without the proper tools
and equipment. Have the necessary work
done by your authorized Audi dealer or an­
other properly 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
gine is off. The radiator fan switches on au­
tomatically when the coolant reaches a cer­
tain temperature and will continue to run
until the coolant temperature drops.
- Always switch off the ignition before anyone
gets under the vehicle.
- Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle. The jack supplied with the vehi­
cle is not adequate for this purpose and
could collapse causing serious personal in­
Jury.
- If you must work underneath 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 selector
lever (automatic transmission) is in P (Park
position) and the park brake is applied. ..,