2014 AUDI TT ROADSTER ignition

Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 134 Eng ine compartme nt: cover o n the coolant
expansion tank
Before you check anything in the engine com­
partment,
a lway s read and he ed all WARN ­
INGS ¢ A in Working in the engine compart­
ment on page 165.
.,. Park your vehicle on a level surface.
.,. Switch the ignition
off .
.,. Read the coola nt level at the coolant expan­
s ion tank
¢ page 167, fig . 130. With a cold
engine, it must be above the "min" mark.
With a hot engine, it can be a l ittle above
the indica ted range.
The location of the coolant expans ion tank
can be seen in the engine compar tment illus­
tration
¢page 167.
To obtain an accurate read ing, the eng ine
must be switched
off.
The expans ion tank in your vehicle is equipped
with a n electric coolant level sensor.
When the coo lant level is too low, the warning
light in the Auto-Check System¢
page 17 will
illum inate until you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolant leve l
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cool ing
system. In the event of coolant loss, the cool­
i ng system should be inspected immediately
Checkin g and fillin g 173
by your authorized Audi dea ler . It is not
enough merely to add coo lant .
In a
s ealed system, losses can o ccu r on ly if
the boiling point o f the coo lant is exceeded as
a res ult of overheating.
(D Note
Do not ad d any type of radiator leak sea l­
ant to your veh icle's engine coo lant. Add­
ing radiator repa ir flui d may adverse ly af ­
fect the function and performance of yo ur
cooling system and could result in damage
not covered by your New Vehicle Limited
War ranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the engine com ­
partment,
alway s read and heed alt WARN­
INGS ¢ A in Working in the engine compart­
ment on page 165.
... Tu rn off the engine .
.,. Let the engine cool down.
.,. Place a thick rag ove r the coolant expansion
tank ¢
page 173, fig. 134 and carefully
twist the cap counter-clockwise ¢_& .
.,. Add coo lant m ixed in the correct rat io
¢ page 172, Coolant .
.,. Twist the cap on aga in tightly.
Rep lacement engine coo lant must conform to
exact specificat ions¢
page 172, Coolant.
We recommend using only coolant add itive
Gl2 ++, Gl3 or in an emergency Gl2+. Do not
use a different additive. In an emergency use
plain water until you can get the correct addi­
tive and can resto re the correct ratio . Th is
shou ld be done as soon as possib le.
If you have lost a cons iderab le amount of
coolant, then you should add cold ant ifreeze
and co ld wate r on ly when the engine is cold.
Always use
new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Ex-
cess coolant will be fo rced o ut through the ..,_
•
•

17 4 Che cking and filling
pressure relie f valve in the cap when the
engine becomes hot .
.&_ WARNING
-The coo ling system is under pressure and
can get
very hot. Reduce the risk of
sca lding from hot coolant by following
these steps .
- Turn off the eng ine and a llow it to cool
down.
- Protec t your face, hands and arms from
escap ing fl uid and steam by cover ing
the cap with a large, thick rag.
- Tu rn the cap slowly and
very ca refully
in a counter -clockwise direct ion while
applying light, downward p ress ure on
the top of the cap.
- To avo id being burned, do not sp ill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts. Under certain
conditions, the ethylene glyco l in en­
g ine coolant can catch fire.
- Antifreeze is poisonous. Always store an ­
t ifreeze in its or iginal container and we ll
out of the reach of children.
- If you drain the coolant, it must be
caught and safely stored in a proper con­
ta iner clearly marked "poison".
(D Note
- Coolant po llutes the environment and
could cause an engine fire. Excess cool­
ant will be forced out through the pres­
sure re lief
valve in the cap when the en­
gine becomes hot .
- If, in an emergency, only water can be
added, the correct ratio between wate r
and antifreeze~
page 172 must be re­
stored as soon as possib le.
@) For the sake of the environment
Dra ined coolant should not be reused. Al­
ways dispose of used coolant while obse rv­
ing all environmental regulations .
Radiator fan
The radiator fan switches on automatically by
itself .
The electric radiator fan is controlled by ther­
moswitches that switch on and off depending
on coolant and eng ine compartment tempera­
tures.
An a uxiliary electric radiator fan* sw itches on
and off depending on coolant temperature
and other vehicle operat ion conditions .
After you switch the engine off, the aux iliary
fan can continue running for up to 10 minutes
-even w ith the ignition off. It can even switc h
on aga in later by itself
c> &. , if
- the temperature of the engine coo lant rises
due to the heat build-up from the engine in
the engine compartment, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
.&_ WARNING
-
- To reduce the risk of personal inju ry nev-
er touch the radiator fan.
- The auxiliary electric fan is temperature
controlled and can sw itch on suddenly
even when the engine is not ru nning.
- The auxiliary radiator fan sw itches on au­
tomatically when the engine coo lant
reac hes a certain t emperature and w ill
continue to run until the coolant temper­
a ture drop s.
Brake fluid
' Checking brake fluid level
N
N
N
" ~
Fi g. 13S Engine compartment: cover on th e brake fluid
reservoir

176 Check ing and filling
Have the battery checked when you take your
vehicle in for service. You are well advised to replace a battery that is older than S years .
Disconn ect ing the battery terminals
Some veh icle functions (power w indow regu­
lators, for example) are lost if the battery ter ­
minals are disconnected . These functions have
to be re learned after the battery terminals are
connected again. To prevent this, the battery
should only be d isconnected from the vehicle
electr ical system when absolutely necessary
for repairs .
V ehicles not dri ven for l ong period s
If you do not drive your vehicle over a period
of several days or weeks, electrical compo­ nents are gradually cut back or switched off .
This reduces energy consumption and main­ tains starting capab ility over a longer period
c:::>
page 147. Some of the convenience func­
tions may not operate, suc h as the inte rior
l ights or power seat adjustme nt. The conven­
i ence functions wi ll be ava ilable aga in whe n
you switch on the ignition and start the en ­
gine.
Winter operati on
During the winter months, batte ry capacity
tends to decrease as tempe ratu res d rop . This
is because more powe r is also consumed while
start ing , and the headlights, rea r window de ­
fogger, etc., are used more often.
Avoid unnecessary power consumption, par­
ticularly in c ity traffic or when t rave ling on ly
short distances. Let you r authorized Aud i
dea ler check the capacity of the vehicle bat ­
tery before winter sets inc:::>
page 179 . A we ll
charged battery w ill not only prevent starting
prob lems when the weather is cold, but will
a lso last longer .
Replacing battery
The new battery must have the same capaci­
ty, vo ltage (12 volts), amperage, construction
and p lug sealing, as the origina l battery. Spec­
if ications are listed on the battery housing.
Batteries specially developed by Audi fulfill the maintenance, outp
ut, and safety require­
ments .
When install ing the battery, m ake su re the ig­
ni tion and a ll ele ct rical consumers are switch ­
ed off
c:::> (i) .
We recommend that you use maintenance­
free or
cy cle-re si stant /leak -proof b atter ies
accord ing to the s tanda rds TL 825 06 (from
Apri l 2008) and VW 7 SO 73 (from April
2010) .
Rep lac ing the bat tery shou ld be car ried by a
qualified wo rkshop. Please fo llow the instruc­
tions on the battery cover .
(D Note
- All wo rk on the ba tte ry req uire s techn i­
c al know ledge . Please con ta ct an Aud i
dealership o r another authorized faci lity
for questions abo ut the batte ry -danger
o f ac id burns and exp losion hazard!
- The battery must not be opened! Do not
try to change the battery's liquid level,
otherwise detonating gas will escape
from the battery - explosion hazard!
- The AGM battery in the l uggage com­
partment cannot leak, because the elec­
tro lyte for this battery is absorbed into a
special glass mat. This leak-proof battery
must not be replace with a convent ional
battery.
- Make sure the ventilation hose on the
side of the battery is connected, other­
w ise fumes or battery ac id can leak out .
- Batte ry holder and termina ls always
have to be secured correctly .
- Before all work on the battery follow the
warnings be low c:::> .&. in Working on the
battery on page 177.
@ For the sake of the environment
Because of the prob lem of proper disposal
of a battery, we recommend your author­
iz ed Audi dealer change the battery for
you. Batteries contain sulfur ic acid and
l ead and must a lways be disposed o f prop-
erly in compliance wi th al l envi ronmental ..,.

1 78 Che cking and filling
must be disconnected . If you are just go­
ing to rep lace a light bu lb, then it is
enough to switch off the lights.
- Before disconnecting the battery, switc h
off the anti-theft alarm system! Other­
wise you will set off the alarm.
- When disconnecting the battery, first disconnect the negative cable and then
the positive cable .
- Before reconnect ing the battery, make
sure all electrical consumers are switch­
ed off . Reconnect the positive cable first
and then the negative cable. Never inte r­
change the cables - th is could start a fire!
- Never charge a frozen or a thawed-out battery.
It could explode! If a battery has
frozen, then it must be replaced. A dis­
charged battery ca n freeze over at 32 °F
(0 oc).
- Make sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery .
- Never use batte ries which are damaged.
Danger of explos ion! Always rep lace a
damaged battery .
8_ WARNING
California Proposition 65 Warning:
- Battery posts, te rm inals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive problems. Wash hands after han­ dling.
(D Note
- Do not disconnect the vehicle battery when the ignition is switched on
or when
the engine is running, otherwise, you will
damage e lectronic components in the
electrical system.
- If your vehicle is going to stand for a long period of time without being driven,
protect the battery from "freezing", oth­
erwise it w ill be damaged and w ill then
have to be replaced .
Checking the battery acid level on magic
eye batteries*
The battery acid level in the battery can be
checked through the clear inspection window .
Fig . 1 36 Lu gga ge compar tment: Battery w ith magic
eye .
On top of the battery, there is a round "win­
dow". This window (magic eye) changes co lor
as the battery cha rge and ac id leve l change.
.,. Read and heed all WARNINGS
<=> .&_ in
Working on the battery on page 177
.,. Read the acid level from the window on the
battery <=>
fig. 136.
Air bubbles in the window can cause an inac­
curate reading . Carefu lly tap on the s ide of
the window.
- If the window is
green , the battery acid level
is correct.
- If the window has
no colo r or is brigh t y el­
lo w,
the battery acid level is too low . Have
the battery tested by your author ized Audi
dea ler or a qualified workshop.
- If the w indow is
black , then the battery is
insufficiently charged . Recharge the battery
as soon as possible¢
page 179 .
(D Note
Do not overfill the battery, otherw ise bat­
tery acid will ove rflow through the vent
opening . This can damage the paint and
cause corrosion .

200 Tires and wheels
remain continuo usly illuminated . This se­
quence will continue upon subsequent vehicle
start-ups as long as the ma lfunction ex ists.
When the malfunction indicator is illuminat­
ed, the system may not be able to detect or
signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of rea­
sons, including the installation of replace­ ment or alternate tires or wheels on the vehi­
cle that prevent the TPMS from functioning properly . Always check the TPMS malfunction
tellta le after replacing one or more t ires or
wheels on your veh icle to ensure that the re­
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Tire pressure indicator appears
Applies to vehicles: with tire pressure monitoring system
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction.
F ig. 143 Display : underi nflat io n warn ing
Using the ABS sensors, the tire pressure moni­
toring sys tem compares the t ire tread circum­
ference and vibration characteristics of the in­
d iv idual tires . If the pressure decreases in one
or more tires, th is is indicated in the instru­
ment clus ter with a warning symbo l
ail and a
message<>
fig. 143. The dr iver message in the
display goes out after 5 seconds . The driver
message can be displayed again by pressing
the
! CHECK I button @¢ page 10, fig . 3 . If on ­
l y one tire is affected, the display will indicate
its pos ition.
The tire press ure monitoring m ust be reset in
the menu display each time the pressures are
ad justed (e.g. when switching between parti- al and fu
ll load pressure) or after changing or
replacing a tire on your vehicle<>
page 201.
The TPMS indicator only mon itors the t ire
pressure that you have previously stored . You
can find the recommended tire pressures for
your vehicle on the label on the driver's door
pillar
¢ page 185.
Tire tread circumference and vibration charac­
teristics can change and cause a tire pressure
warning if:
- the t ire pressure in one or more tires is too
low,
- the tire has structural damage,
- the tire pressure was changed, wheels rotat -
ed or replaced but the TPMS was not reset
¢ page 201.
Warning symbols
ail Loss of pressure in at least one tire¢& .
Check the tire or tires and replace or repa ir if
necessary . The indicator light
HE in the instru­
ment cluster also illuminates
<>page 13.
Check/correct the pressures of all four tires
and reset TPMS in the menu display .
ffim (T ire Pressure Monitoring System) Tire
pressure! System malfunction. Ifffim
ap­
pears after switching the ignition on or while
driv ing and the indicator lig ht
HE in the in­
strument cluster blinks for approx ima tely one
minute and then stays on, there is a system
malfunction .
At tempt to store the correct tire pressure
¢ page 201. Ifthe indicator light does not
turn
off or if it turns on shortly thereafter, im ­
med iate ly drive your vehicle to an author ized
Audi dealer or author ized repair facility to
have the malfunction corrected.
_&. WARNING
-
- If the tire pressure indicat or appears in
the instrument cluster display, one or
more of your tires is significant ly under­
inflated . Reduce your speed immediately
and avoid any hard steer ing or braking
maneuvers. Stop as soon as possible and
check the tires and their pressures.
IJJ,,

202 Tires and wheels
@ Tips
-Before resetting the TPMS, the current
pressures of
all four tires must corre­
spond to the specif ied values. Adjust the
tire pressure and reset the pressure in
the tire pressure mon itor ing system ac­
cord ing to the load you are carry ing
¢page 185.
- Do not store the tire pressure if there are
snow chains on the tire.
Reset tire pressure monitoring system
(Step2)
Ap plies to vehicles: with tire pressure mo nit oring sys te m
F ig. 146 Display: Tire pressure
Fig. 147 Display: Tire pres sure
I Reset I button @ and rocker switch @
c::, page 201, fig . 144 functions:
Storing tire pres sures
.. Turn on the ignition.
.. Se lect the menu :
> Adjust ing * > Tire pres­
sure > Store.
Entering and confirming
.. Select the menu: Store now
.. Press the
I Reset ! button @.
.. Se lect the menu : Confim
.. Press the
I Reset ! button @.
Returning to the Start menu
.. Press the I Reset I button longer than 2 sec­
onds to return from any menu level to the
Start men u.
(D Tips
-Before resetting the TPMS, the current
pressures o f
all four tires must corre­
spond to the specified values . Adjust the
tire pressure and reset the pressure in
the tire pressure monitoring system ac­
cording to the load you are carrying
c::, page 185.
-Do not store the tire pressure if there are
snow chains on the tire .
Run-flat tires
Introduction
Applies to vehicl es: wi th Run-fla t tires
Run-flat tires help keep you moving if a tire
goes flat.
Re inforced sidewalls give the ti res run-flat ca­
pability if tire pressure is lost .
We recommend that run-flat tires only be
mounted on vehicles that were originally
equipped with these special t ires at the facto­
ry and have a Tire Pressure Monitoring Sys­
tem.
Run-flat tires can be identified by the letters
"RSC " on the tire sidewall.
If you do change the tires on your veh icle from
normal to run-flat tires., you must buy the
special rims required for run-flat tires, and the
T ire Pressu re M on itor ing System must be re­
programmed by an authorized Audi dealer or
other qualified workshop .
What do run-flat tires do?
These special t ires have run-flat capabilities
that help keep you moving if a tire loses pres­
su re and goes f lat . Under favorab le condit ions
t ir es can be dr iven
at least 30 miles (50 km) ,
but you must not drive faster than 50 mph
(80 km/h)
c::, page 203, Driving with run-flat
tires .
IJI>

208 What do I do now?
• Remove the dust cap from the valve of the
defective tire.
• Screw the hose@) onto the valve
(J)
¢fig . 153.
• Insert the plug@¢ fig. 152 into the socket
for the cigarette lighter.
• Switch on the ignition .
Inflating tire
• Move the switch@¢ fig. 153 on the e lec­
tric air pump
l ) to position I. After 5 mi­
nutes, tire pressure must have reached at
least 1.8 bar .
• Switch the electric air pump off -switch in
pos it ion
0 . If the requ ired tire pressure of at
least 1.8 bar has not been reached, follow
the instructions in the section
Re-inflating
tire.
Re -inflating tire
• Remove the hose from the valve and pull the
plug out of the socket.
• Drive the vehicle slow ly 10 meters backward
or forward. This helps to distribute the seal­
ant better .
• Remove the empty inflation bott le and
screw the hose®¢
fig. 152 from the elec­
tric pump directly onto the valve.
• Insert the plug@¢
fig. 152 into the socket
for the cigarette lighter.
• Switch on the ignition .
• Move the switch @¢
fig. 153 on the e lec­
t ric air pump
l) to posit ion I. After 5 mi­
nutes, tire pressure must have reached at
least 1.8 bar.
• Switch the electric air pump off -switch in
position
0. If the required tire pressure of at
l east 1.8 bar has not been reached, it is not
poss ible to make a repair with the tire seal­
ant. Seek professional ass istance.
Disassembling Tire Mobility System
• Remove the hose from the valve and pull the
plug out of the socket.
• Screw the dust cap onto the va lve.
1l The electric air p ump sho uld never ru n fo r long er than
6 min utes.
• Place the empty sea lant bott le back in the
original packaging and clip it in place under
the floor so that no t ire sea lant can run out
into the veh icle.
• Place the electric air pump in the luggage
compartment for the t ime being .
• Start driv ing right away so that the sealant
is distributed in the tire.
_&. WARNING
- Follow the manufacturer's safety instruc­
tions on the decal for the air pump and
the sealan t bottle.
- If a tire pressure of 1.8 bar cannot be
achieved after pumping for 5 minutes,
the tire is too severe ly damaged. Do not
continue to drive.
- Seek professional assistance if it is not
possible to repair the tire with the tire
sealant.
(D Tips
- Do not operate the electric air pump for
more than 6 minutes without stopping,
otherwise it can overheat . When the air
pump has cooled down, you can continue
to use it.
- If sea lant has escaped, allow it to dry,
then you can pee l it off.
Final check
App lies to vehicles: wit h Tire Mobility System
After driving for a short distance, tire
pressure must be checked
• After driving for about 10 minutes, stop and
check the tire pressure .
• If tire pressure is still at least 1.3 bar, in­
flate the tire to specified pressure (see driv­
ers side B-pillar), drive to the next repa ir
shop and have the tire and the sealant bot­
tle replaced.
• If tire pressure is less than 1.3 bar, the tire
is too severely damaged. Do not continue to
drive . Seek professional assistance. .,.

Fuses and bulbs
Electrical fuses
Replacing fuses
Fuses that have blown will have metal strips
that have burned through.
Fig. 161 End face of instrument panel: removing cover
p la te to access fuses
Fig . 162 Left side of eng ine compart ment: fuse cove r
Fuse cover on the left end face of the
instrument panel
.. Switch off the ignition and the electrical
component affected.
.. Carefully pry the fuse cover off the instru ­
ment panel using the ignition key or a
screwdriver
~ fig. 161 .
.. Check the fuse list ing on the next pages to
find out which f use belongs to the compo­
nent which has failed
¢ page 214, Fuse Lo­
cation, Instrument Panel left .
.. Remove the blown fuse with the plastic clip
provided. The clip is located on the holder in
t he fuse box .
.. Replace a blown fuse (recognizable by the
melted metal str ip inside) with a fuse of the
same amperage .
.. Firmly snap the cover back onto the instru­
ment pane l face .
Fuses and bulbs 213
Fuse cover in engine compartment
.. Switch the ignit ion and the affected con­
sumer off .
.. Unlatch the fuse cover, p ush the two slides
forward
~ fig. 162.
.. Fi nd out which fuse belongs to the equip­
ment which stopped working
~page 215,
Fuse location, le~ side of engine compart­
ment.
.. Remove the plastic from its retainer in the
fuse box cove r (left face end of the instru­
ment panel), place it on the f use in question
and pull it out .
.. If the fuse is burned out (recogni zable by
melted strips of metal), replace it with a
new fuse
of the same rating .
.. Replace the fuse cover .
.. Push the two slides to the rear
¢ fig. 162.
Insta ll the fuse cover carefully to prevent
water from enter ing .
The various electrical circuits are protected by
fuses. The fuses are clustered in a centralized
unit. The unit is located behind the face panel
at the end of the instrument panel.
You are well advised to keep a supply of spare
fuses in your vehicle. Fuses with the proper
ampere ratings are available at your author ­
ized Audi dealer.
A WARNING
-
Do not repair fuses and never replace a
b lown fuse with one that has a higher amp
rating. This can cause damage to the elec­
trica l system and a fire.
(D Note
If a new fuse burns out again after short ly
have you have installed it, have the electri­
ca l system checked by your authorized
Audi dealer.