heating AUDI TT ROADSTER 2015 Owners Manual

Warm and cold Climate controls
Controls
W arm and cold 6 7
The air conditioning automatically maintains the selected temperature in the vehicle interior
throughout each season .
Fig. 78 Climate contro ls
We recommend the following sett ing :
• Rotate the knob
c::> fig. 78 @ to the right to
switch on the air conditioning .
• Set the temperature to 72 °F (22 °() .
• Press the
!AUTO I c::> fig . 78 button .
Using the previously recommended setting is
the quickest way to achieve a comfortable cli ­
mate in the vehicle . Th is setting should there­
fore only be changed when persona l comfort
l eve ls o r certain circumstances requ ire it .
The climate controls are a combination of au ­
tomatic heating and ventilation systems and a
coo ling system which dehum idifies and coo ls
the air inside the vehicle .
The climate controls automatically maintain a temperature once it has been set. The tem­pe rat ure of the air from the v ents, fan speed
(air vo lume) and ai r distribu tion are also auto ­
mat ica lly adjusted . The system also takes into
account strong sunshine so that manua l ad ­
justment is not necessary . So in almost all
cases,
a utomatic mode offers the best cond i­
tions for the comfort of the occupants at all
times of the year
c::> page 70 .
Plea se note:
In cooling mode, relative humidity in the inte­
rior is reduced . This prevents the w indows
from fogg ing up .
When relative hum idity and temperatures
outside are high,
condensation can drip from
the a ir cond ition ing evaporator and form a
poo l of water under the veh icle. This is normal
and not an ind ication of a leak!
When outside temperatures are low, the fan
does not switch to a higher speed until the coolant has reached an adequate tempera ­
tu re , with the exception of the defrost set­
t ing.
When accelerating at wide-open throttle, the
air condit ioning compressor is temporar ily
switched off to maintain full engine power.
In order to ensure engine cooling under ex­
treme engine loads, the compressor is switch­
ed off if coolant temperatures cl imb too high .
Funct ions are set by turn ing the rotary knob
or switched o n and off by tapp ing the buttons.
1111-

68 Warm and cold
The LE D in the buttons ill uminates when the
function is active .
Button(s) Meaning
Rotary Temperature selection
knob
(D ¢ page 68
Rotary Switch air conditioning on/off
knob @lil (
F an) ¢
page 68
Rotary Air distribution ¢ page 69
knob @
~ Defrost ¢ page 70
~
Rear window defogger
¢page 70
Heated seat* driver/passenger
I-..i +I side ¢ page 71
~ Recircu lation ¢ page 70
IA/Cl Switch on cooling system
¢page 70
Pollutant filt er
The pollutant filter (particle filter) ensures
that contaminants in the outside air (such as
d ust or pollen) are greatly reduced or stop­
ped. The air is also filtered in recircu lation
mode.
The po llutant filter element must be changed
according to the intervals specified in the
maintenance schedule so that the air condi­
tioning system's performance is not adversely
affected .
If the filter's effectiveness is weakened by
driving the vehicle in areas with heavily pollut­
ed outside air, the filter element should also
be changed in between the listed services.
A WARNING
For safety reasons, it is important that all
w indows are free of ice, snow, and conden­
sation. Only then is good visib ility ensured.
Please fam iliari ze yourse lf with the co rrec t
operation of the air conditioning and how
to de humidify/defrost the windows .
([) Note
-If you suspect that the clima te controls
have been damaged, swi tch the system off to avoid damaging it, and have it in­
spected by an authorized Audi dea
ler .
- Audi climate control system repairs re­
quire special expertise and the proper
tools . You should contact an authorized
Audi dealer in the event of malfunctions.
(D Tips
- To avoid adversely affecting heating and
cooling performance and to prevent con­
densation on the windows, the air intake
in front of the windshield must be free of
ice, snow, and leaves.
- The a ir coming from the vents and circu­
lat ing through the entire interior is ex­
tracted through the out let slots in the
side pane ls in the luggage compartment .
Make sure that the outlet slots are not
covered by clothing, etc.
- Climate contro l works most effectively if
the windows are closed. However, if the
inter io r of a par ked veh icle is ext reme ly
hot from the sun's rays, briefly opening
the windows can speed up the cooling process .
Setting temperature
.,. Turn the rotary knob (D ¢ page 67, fig. 78
to the desired temperature setting.
T o set a lower temperature, turn the rotary
knob to the left. To set a higher temperature,
turn the rotary knob to the r ight. There are
additional intermediate settings available to
adjust the temperature as needed.
Switching climate control on and off
Switching the climat e control sy stem on
and off
.,. Tu rn the knob@¢ page 67, fig. 78 to the
r ight to switch climate cont ro l on. The LED
next to the word O FF goes out.
.,. Turn the knob@¢
page 67, fig. 78 to the
left to switch the climate control system off.
The LED next to the word OFF comes on.
Iii>

The rear window defogger works only when
the engine is running. The indicator light in
the button illuminates when the rear w indow
defogger is turned on .
The rear window defogger is switched off au­
tomatically after approx . 10 minutes .
@) For the sake of the environment
As soon as the rear window is clear, yo u
should switch the rear window de fogger
off . The reduced power consumption has a
beneficial effect on fuel consumption.
Heated seats~
Applies to vehicles: with heated seats
The seat cushion and the seotbock of the
front seats con be heated electrically .
.,. Press the heated seats b utton I-J + I
Q page 67, fig. 78 to set the level of heating
desired .
The range of controls goes from 1 to 3. The heat setting se lected is shown by LEDs above
the button .
A WARNING
Individuals with reduced sensitivity to pain
or temperature could develop burns when
using the seat heating function. To reduce
the risk of inju ry, these individuals should
not use seat heat ing .
(D Note
To avo id damage to the heating elements
in the seats, do not kneel on the seats or
place heavy loads on a small area of the
seat .
Using the climate controls economically
Economical use of the climate controls helps
to save fuel .
When climate control is working in coo ling
mode, engine performance is reduced and
fuel consumption is affected . To keep the time
Warm and c old 71
the air conditioning is on as short as possible,
you should do the following:
.,. If you would like to save fuel, switch the ai r
condi tioning off .
.,. If you open the windows while driving,
switch the air conditioning off .
.,. If the veh icle is extremely hot d ue to the
heat of the sun, br iefly open doors and w in­
dows .
@) For the sake of the environment
When you save fuel, you reduce emissions
from the vehicle.

86 Transmis sion
& WARNING ,-
- Always adapt your driving to the traffic
flow.
- Only use Launch Control when road and
traffic conditions allow it and other driv­
ers will not be endangered or annoyed by
your driving and the acceleration of the
vehicle .
- Make sure that ESC remains enabled.
With the ESC disabled, the vehicle could
brake away, particularly on a slick and
slippery road - risk of skidding!
- Once acce lerat ion is finished, switch ASR
on again by briefly pushing the ESC but­
ton.
(j) Tips
- The transmission temperature may in­
crease significantly after using the Launch Control Program. If that hap­
pens, the program may not be available
for a few minutes.
It will be available
again after a cool-down period.
- When accelerating using the Launch
Control program, all vehicle parts are
subject to heavy loads . This can result in
increased wear.
Back-up program
In the event of a system malfunction, there is
a back-up program.
In the event of system malfunction, the auto­
matic transmission switches to the fail-safe
mode. Al l of the selector lever position dis­
plays for the automatic transmission are high­
lighted with a light background in the instru­
ment cluster display . In some cases you can­
not use reverse gear any more.
If the transmission switches to fail-safe mode, you should take the vehicle to an au­
thorized Audi dealership as soon as possible
to have the condition corrected .
Clutch is overheating
• Clutch is overheating! Please stop vehi­
cle!
If the symbols are illum inated, the clutch is
overheating and could be damaged if you con­
t inu e to drive. Stop the vehicle and allow the
transmission to cool with the se lector lever in
the P position while the engine runs at idle. If
the warning does not turn off, do not continue driving. See your authorized Audi dealer or
qualified repair facility for assistance. Other­
wise serious transmission damage could re­
sult . Once the indicator light has turned off,
drive to your authorized Audi dealer or quali ­
fied repa ir facility immed iately to have the
malfunction corrected .
Selector lever emergency release
If the vehicle's power supply fails, the selec ­
tor lever can be released in an emergency.
--
-
-
-
-
---Fig. 95 Selecto r lev er: Remov ing the selector le ver
boot
Fig. 96 Selecto r lever : Using the emerge ncy release to
move out of the Park positio n
The emergency release mechanism is located
i n the right front area under the selector lever
shift gate. Using the emergency release can
be complicated. We recommend contacting ..,_

142 Intelligent technology
switched on all the time. In certain situations
when you need less traction, you can switch
off ESC by pressing the button
l!l . Be sure to
switch ESC on again when you no longer need
less traction.
Anti -toc k brak ing system (ABS)
ABS prevents the wheels from lock ing up
when braking . The vehicle can still be steered
even during hard brak ing . Apply steady pres­
sure to the brake pedal. Do not pump the ped­
al. A puls ing in the brake pedal ind icates that
the system is he lp ing you to brake the vehicle .
Brake assist sy stem
The brake assist system can decrease braking
d istance. It increases braking power when the
driver presse s the brake pedal quickly in emer­
gency si tuations. You must press and hold the
brake peda l until the situation is over .
Anti-slip regulation (ASR)
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to the road conditions . This makes it easier to
start, accelerate and drive up hills.
E lectronic differential lock (EDL )
The ED L brakes wheels that are spinning and
transfers the drive power to the other drive
wheel or whee ls if the vehicle is equipped with
all-wheel drive*. This function is available up
to about 60 mph (100 km/h) .
In extreme cases, EDL a utomatica lly switches
off to help keep the brake on the braked whee l
from overheating. EDL will switch on aga in au­
tomatically when conditions have returned to normal.
A WARNING
- ESC, ABS, ASR and ED L can not ove rcome
t h e laws of phy sics. This is espe cial ly im ­
por tant on slip pery or wet ro ads .
If th e
sys tems begin a ct in g to stab ilize your ve­
hicle, you shou ld imme diately change
yo ur speed to match the road and traffic
condit ions. Do not let the inc reased safe­
ty provided by these systems tempt you to take risks. Do
ing so w ill increase the
risk of a loss of veh icle control, co llision
and serious pe rsonal injuries .
- Always adapt your speed to road, traffic
and weather conditions. The risk of los­
ing control of t he vehicle increases when
driving too fast, espec ially through
curves and on slippe ry or wet roads, and
wh en dr iv ing too clos e to vehicl es u p
ahead. ESC, A BS, the brake ass ist sys­
tem, ED L and ASR cannot p reven t coll i­
si ons .
- Always acceler ate wi th sp ecial c are on
even, smoo th s urfaces such as those th at
are wet or covered with ice and snow .
The drive wheels can spin even with
these assistance systems that cannot al­ ways he lp to reduce the risk of loss of ve­
h icle co ntrol.
(D Tips
- ABS an d ASR only wo rk correct ly when
all four whee ls are equipped with identi­
cal tires . D ifferent tire si zes can lead to a
reduction in engine powe r.
- Yo u may hear noises when the systems
descr ibed are working.
- If the ind icator light Ii) or II (USA
mode ls)/ Ei] (Canada models) appears,
there may be a malfunction
¢ page 18,
¢ page 17.
Switching on and off
£SC turns on automatically when you start
the engine.
Fig . 12 1 Ce nte r conso le: ESC OFF b utto n

148 Intelligent technology
To bring the energy balance back into equili­brium, consumers which require especia lly
l arge amo unts of energy are temporari ly c ut
back or switched off. Heating systems in par­
ticular requ ire a great dea l of energy. If you
n otice, for example, that the heated seats * or
the heated rea r window a re not heating, they
have been temporar ily cut back o r switched
off. These sys tems will be ava ilable again as
soon as the energy ba lance has bee n restored.
You will also not ice that engine idle speed has
been inc reased slightly. This is no rma l and not
a cause fo r concern . By increas ing engine idle
spee d the add itiona l ene rgy required is gener ­
ated and the ba ttery is charged .
Driver notification in the instrument
cluster display
If battery power drops into the range where it
can limit the ability of the engine to start, th is
i s shown in the instrument cluster display
with the following driver message:
(•) Low battery charge : battery will be
cha rged while dri ving
This notification reminds you that the starti ng
capability of the engine may be limited. As
soon as you start driving aga in, the battery
will be recharged and the notification will go
out .
Driv er notificat ion appears and goes out
again
If t his driver notification appears after the ig­
ni tion is turned on or while driv ing and it goes
out again after a while, the battery has been
adequately rec harged.
Driver notification appears and does not
go out again
If t his driver notification appears after the ig­
n ition is turn ed on or while driv ing and does
n ot go ou t aga in, t he battery's s tate of charge
is not i n the opt imal range. St arting ability is
restricte d. Have the bat tery checked as soon
as possible by a n authorized Audi dealer or
q ua lified workshop.

the exhaust system and this could cause
the catalytic converter to overheat.
- Do not turn off the ignition while the ve ­
hicle is moving .
- Do not continue to operate yo ur vehicle
under these conditions, as otherwise fuel
can reach the cata lytic converter. This
could result in overheating of the con­
verter, requ iring its replacement.
- To assure efficient operation of the Emis­
sion Control System:
- Have your veh icle ma inta ined properly
and in acco rdance with the service rec­
ommendations in your Warranty
&
Ma intenan ce booklet.
- Lac k of proper maintenance as well as
improper use of the vehicle will impa ir
t he funct ion of the emission control
system and cou ld lead to damage.
@ For the sake of the environment
Even when the Emission Contro l System is
operating p roperly, the exhaust gas can
have a s ulfu r- like exhaust gas smell under
some operating states. This depends on
the s ulfur content of the fue l being used.
Using a different brand of fuel may help,
or filling the tank w ith lead-free super
grade gasoline .
Shutting down vehicle
If you would like your veh icle to remain inop­
erat ive for a longer period of time, contact an
Aud i or other specialized deale r. T hey can ad­
vise you on necessary precautions e.g . corro­
sion prevention, ma intenance and storage.
Pay attention to add itiona l information con­
cerning the battery . Re fer to~
page 175.
Dri vin g and en vironm ent 151
Operate your vehicle
economically and
minimize pollution
General
Your personal style of driving will determine
the economy of your vehicle, as well as ex­
haust and noise levels.
Fuel economy, environmenta l impact, and
wear on your eng ine, brakes and tires largely
depend on three factors:
- your personal d riving s tyle
- operati ng conditions
- technical limitat ions
If you ant ic ipate what you need to do next and
drive economically, you can easily cut you r
fuel consumpt io n by 1O-lS percent . T his sec­
tion w ill give you some tips on how you can
help the env ironment and your po cketbook.
@ Tips
The consumption estimates as published
by ENVIRONME NTAL PROT ECTI ON AGENCY
( E PA) a nd Tra nsp o rt Canada may no t corre­
spond to your actual consump tion on the
r oad, which will va ry depending upon vehi ­
cle load and speed, road and weather con­
ditions, trip length, etc.
Drive smoothly and keep a lookout
ahead
Vehicles use the most fuel when they are ac­
celerating.
Avoid unnecessary acce lerating and braking .
Vehicles use the most f ue l when they are ac­
ce le rat ing. If you ant icipate what is going to
happen next, you will need to brake less and,
thus, acce lerate less . Let the vehicle coast
whenever possible - for examp le when you see
that the next traff ic light is red.
•
•

152 Driving and en vironm ent
Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage .
"'Try and keep well below your car 's maximum
speed.
Accelerating gently reduces fuel consump­
tion, engine wear, and does not disturb the
environment. F ue l consumption, exhaust emissions and en ­
gine no ise increase disproportionately at high
speeds. If you drive at approximately three
quarters of top speed, fuel consumption will be reduced by one half. Never dr ive faster
than the posted speed limit and weather con­
d itions permit .
Reducing unnecessary idling
Even when your car is just idling it burns up
fuel.
"'Shut the engine off when you are not driv ing
the vehicle .
"'Do not warm up the veh icle by letting the
engine run at idle .
It makes sense to shut
off the e ngine in traff ic
jams, when waiting for trains to pass at ra il­
road crossings , or at traff ic lights that have
l ong wa its on red. Turning the engine
off fo r
just
30-40 seconds saves more fue l than is
burned s tarting the eng ine again .
It takes a long time for the engine to warm up
fully when it is running at idle . Howeve r, wear
and nox ious em issions are especially high
when the engine is warming up. So you should
drive away as soon as you start the engine and
avoid running at high RPMs while the engine
is sti ll warming up.
([) Note
Do not leave engine idling unattended af ­
ter starting . If warning lights should come
on to indicate improper operation, they
wou ld go unheeded. Extended idling also
produces heat, which cou ld result in over- heating or other damage to the vehicle or
other property .
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel.
"' Have your ve hicle serviced at reg ular in ter -
vals.
By having your veh icle regu la rly serviced by an
Audi dealer he lps to ensure that it runs p rop­
erly and economically. The condition of your
vehicle not only affects its sa fety and ability to
hold its val ue, it also affects
fuel con sum p­
tion .
Check your oil e ach time you fill your t ank .
The amount of o il used is related to engine
load and speed .
It is normal for the oil consumption of a new
engine to reach its lowest value after a certa in
mileage has been driven.
You must drive your veh icle about 3,000 m iles
(5,000 kilometres) before you can properly
assess oil consumpt ion.
This also app lies to fue l cons umption and en­
gine output.
(D Note
- Have your vehicle maintained proper ly
and in accordance with the service rec ­
ommendations in your Warranty
& Main­
tenance booklet. Lack of proper ma inte­
nance as well as improper use of the ve­
hicle will impair the function of the
em iss ion contro l system and cou ld lead
to damage.
- Do not alter or remove any component of
the Emission Control Sys tem unless ap­
proved by the manufacturer.
- Do not alte r or remove any device, such
a s hea t sh ie lds, switches, ig nition w ires,
valves, which are designed to protec t
your vehicle's Emission Control System
and other impo rtant vehicle compo­
nents .

158 Vehicle care and cleaning
- Never remove snow or ice from win­
dows and mirrors using warm or hot
water because this could cause cracks to form .
- To avoid damage to the rear window
defogger, do not apply any stickers on
the heating wires on the inside of the
window.
- Decorative parts/trim
-Never use chrome care or cleaning
products.
- Paint
- To reduce the risk of scratches, the ve-
hicle must be free of dirt and dust be­
fore polishing or waxing.
- To prevent paint damage, do not polish or wax the vehicle in direct sunlight.
- To reduce the risk of paint damage, do
not polish away rust film .
-Trim
-To reduce the risk of damage, do not
treat the trim around the panorama
sunroof with paint polish.
- Decorative decals
-To reduce the risk of damage, do not
use any rough powder or abrasive
cleaning products.
- To reduce the risk of damage , do not
polish decorative parts that have a
matte finish.
- Displays
-To avoid scratches, do not use dry
cleaning methods on displays.
- Controls
- Make sure that no fluids enter the con -
trols, because this could cause dam­ age.
- Safety belts
- Do not remove the safety belts to clean
them.
- Never clean safety belts or their com­
ponents chemically or with corrosive
fluids or solvents and never allow sharp objects to come into contact
with the safety belts. This could cause damage to the belt webbing. - If there is damage to the webbing, the
connections, the retractors or the buck­les, have them replaced by an author­
i z ed Audi dealer or a qualified work­
shop.
- Textiles/Vinyl/Alcantara
- Never treat Vinyl/Alcantara with leath-
er care products , solvents, floor polish ,
shoe polish , stain remover or similar
products.
- To avoid damage, have stubborn stains
removed by an authorized Audi dealer
or a qualified workshop.
- Never use steam cleaners, brushes,
hard sponges, etc. when cleaning.
- Do not turn on the seat heating* to dry
the seat.
- Objects with sharp edges such as zip­
pers , rivets on clothing or belts can
cause damage to the surface.
- Open hook and loop fasteners, for ex­
ample on clothing, can damage seat
covers. Make sure hook and loop fas­
teners are closed.
-Natural leather
-Never treat leather with solvents, floor
polish, shoe polish, stain remover or
similar products.
- Objects with sharp edges such as zip­
pers, rivets on clothing or belts can
cause damage to the surface .
- Never use steam cleaners, brushes,
hard sponges, etc. when cleaning.
- Do not turn on the seat heating* to dry
the seat.
- To help prevent the leather from fad­
ing, do not leave the vehicle in direct
sunlight for long periods of time . If
leaving the vehicle parked for long pe ­
riods of time, you should cover the
leather to protect it from direct sun­
light.
@ Tips
- Insects are easier to remove from paint
that has been freshly waxed.

@ For the sake of the environment
-Before changing your oil, first make sure
you know where you can properly dispose
of the used o il.
- Always dispose of used engine oil proper­
l y. Do not dump it on garden soi l, wood­
ed areas, into open streams or down
sewage dra ins.
- Recycle used engine oil by taking it to a
used engine oil collection facility in your
area, or contact a service station .
Engine cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro­ tects the engine from freezing in the winter.
The cooling system is sea led and generally re­
q uir es lit tle atten tion .
The cooling system has been filled at the fac ­
tory with a pe rmanent coo lant which does not
need to be c hanged. The coolant consists of a
mixture o f spec ial ly conditioned water and the
manuf acturer 's glyco l-basedcoolan t addi -
tiv e G13 antifreeze with ant icorros ion addi ­
tives (50% for USA models ; 60% for Canadian
mod els) . This mixture both assures the neces­
sary
frost protection and p rotects metal com ­
ponents in the engine's coo ling system from
corrosion and scaling . It a lso raises the boil­
i ng point of the coolant .
Do not reduce the concentration o f the coo l­
ant in the summer by adding plain water.
The
proportion of coolant add it ive must be at
l e a st 50 % but not mor e than 60 %
to main­
tain antifreeze protection and coo ling efficien­
cy .
If the coolant frost protect io n is too low,
the coolant cou ld free ze and dam age the veh i­
cle heating and eng ine cooling system.
For yea r-round driving, antifreeze is added at
the fac to ry for tempera tures down to:
-- 31°F( -35°C)USA
- -40 °F ( -40 °C) Canada.
Checkin g and fillin g 171
If you must add coo lant, use a mixture of wa ­
ter and coolant additive . Mix ing the coo lant
additive with distilled water is recommended.
_& WARNING
Before you c heck anything in the engine
compartment, always read and heed a ll
WARNINGS
c> .& in Working in the engine
comportment on page 164.
Q) Note
- Before winter sets in, have the coo lant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­ mate condi tions. This is especi ally impor­
tan t if you live i n a region wher e th e win­
ter is ex treme ly co ld . If necessary, i n­
crease t he p ropo rtion of coo lant add itive
to 60% .
- Whe n ad ding coolant additive t o yo ur
c ooling sys tem, reme mbe r:
- We recommend using on ly coolant ad­
d itive G12++ or G13 for your vehicle .
This coolant additive is availab le at au­
thor ized Audi dealers . O ther types of
a ntifreeze can s ignifica ntly reduc e cor­
rosion prote ction. The result ing cor ro­
sion can cau se a loss o f coolan t and se­
rio us engine d amage .
- Do not add any ty pe of rad iator leak seal­
a nt to yo ur vehicle 's engine c oolant .
A dd ing radia tor repair fl uid may adverse ­
ly affect the f unction and pe rformance of
your coolin g system and co uld resu lt in
damage not covered by your New Ve hicle
L imited Warranty.
-
•
•