2018 AUDI TT ROADSTER coolant temperature

Instruments and indicator lights
Instruments and indicator lights
Instruments
Audi virtual cockpit (instrument cluster)
The instrument cluster is the central information center for the driver.
Fig. 3 Instrument cluster overview
CD Engine coolant temperature 8
@ Driver information system . . . . . . 17
® Fuel level . . . . . . . . . . . . . . . . . . . . 8
@ Trip odometer reset knob . . . . . . . 21
Coolant temperature indicator
The coolant temperature display c;, page 8,
fig. 3
CD only functions when the ignition is
sw itched on. To prevent engine damage, p lease
observe the following notes about the tempera­
ture ranges.
Cold range
If on ly the LEDs in the left area of the gauge turn
on, the engine has not reached operating tem­ perature yet. Avoid high engine speeds, full ac­
celerating and heavy engine loads .
Normal range
The engine has reached its operating tempera­
ture once the LEDs up to the center of the gauge
turn on. If
the . indicator light in the Infotain­
ment system display turns on, the coolant tem­
perature is too high
c::;, page 12.
8
(I;} Note
-Aux iliary head lights and other accessories in
front of the cooling-air intake impair the
cooling effect of the coolant. This increases
the risk of the engine overheating during
high outside temperatures and heavy en ­
gine load.
- The front spoiler also helps to distribute
cooling air correctly while driving. If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the engine over­
heating w ill increase. See an authorized
Audi dealer or author ized Audi Service Fa ­
cility for assistance .
Fuel level
The indicator@ only func tions when the ignition
i s sw itched on. If the fuel level drops below 1.9
gal (7
L), a red LED will light up and the rD indi­
cator light will turn on
c::;, page 15. The LED
blinks red when the fuel level is very low.
The fuel tank capacity of your veh icle is listed in
the
Technical Data section c;, page 288. ..,.

Instruments and indicator lights
If th e indicator lig ht blinks and t he message ap ­
pea rs, there is not eno ugh bra king power to se ­
cure the vehicle . The brakes have overheated. The
ve hicle co uld ro ll away eve n on a small incline .
llJ;l:l:);J;H~ (USA models) / Ii] (Canada models)
Parking brake: applied
If thi s m essage appears, p re ss the bra ke peda l
fir st and t hen release the p arking br ake if neces ­
sary .
(D Tips
For additional in format io n on t he parkin g
bra ke, see
q page 61.
_}_ Cooling system
• Turn off engine and check coolant level.
Th e co olan t leve l is too low .
Do not cont inue drivi ng a nd switch the eng ine
off. Check the coolan t leve l
q page 239 .
-If the coolant leve l is too low, add coo lant
q poge 240 . Onl y cont inue driv ing once the in­
dicator light t urns off .
• Coolant temperature: too high. Let engine
run with vehicle stationary
L et the eng ine run at id le for a few minutes to
coo l off, unt il the indicator light turns off .
- I f th e indic ator li ght d oes no t turn off, do no t
contin ue d riving the vehicle . See an au thori zed
Audi dealer or authorized A udi Se rvi ce Fac ility
fo r assistance .
A WARNING
-Never open t he hood if you can see o r hear
steam o r co olant esca ping from the eng ine
compartment. This inc reases t he risk of
bur ns. Wa it unti l you no long er see or h ea r
st eam o r coolan t esca ping .
- The eng ine compartmen t in any ve hicle can
b e a dangero us area. S to p the eng ine and
allow it to coo l before wo rking in the e ngine
compa rtm ent. A lw ays f ollow the in for ma­
tion fo un d in
q page 233, Wo rking in the
engine comportment .
12
@ Note
Do not conti nue driv ing if the . indicato r
ligh t tu rn s on as this increases the risk of en ­
g ine damage.
9=7: Engine oil pressure
• Turn off engine. Oil pressure too low
Stop t he e ngine and do not co nti nu e d riving .
Check the eng ine oi l level
q page 237.
- If the en gine o il level is too low, add engi ne oil
q poge 237. Only continue driving once the in ­
dicator light turns off .
- If the eng ine o il level is co rre ct an d t he indic a­
t o r lig ht still bli nks, t urn the engine o ff and do
not continue dr iving. See a n author ized A udi
dea le r or a uth orized Audi Serv ice Facility fo r as ­
sistance.
(D Tips
The o il press ure wa rning is not an oil leve l in­
d icator . A lways check t he oil leve l regula rly.
E::3 Generator/vehicle battery
• Electric system : malfunction! Battery is not
being charged
There is a ma lf u nction in the a lternato r o r the ve ­
hicle e lectrica l system.
Dr ive to an au thor ized A udi d ealer or au tho rize d
Audi Se rvice Fac ility immed iate ly . T urn off a ll un­
necessary e lect rical eq uipment because it will
dra in the battery. See an a uthorized Audi dea ler
or a uthori zed Aud i Serv ice Facility if the battery
c h arge level is too low.
(•) Electrical system: low battery charge. Bat­
tery will be charged while driving
The s ta rting ability may be imp aired.
If this m essage turns off af ter a litt le whi le, t he
vehicle battery ch arge d enoug h while d riv in g.
If the message does not t urn off , have an autho r­
i zed Audi dealer or author ized A udi Se rvice Facili­
ty repair the ma lfu nction .

Warm and cold
Automatic climate control system controls
Fig. 6 1 Automatic climate co ntrol syste m: contro ls
You can control the functions through the dial,
buttons in the dial and the buttons . Press the
buttons to turn the functions on or off. The LED i n a button w ill light up when the funct ion is
sw itched on.
Pressing the
IAU TO ! button and setting the tem­
pe rature to 72
°F (22 °() is recommended. The
automatic climate control system automatically
maintains a temperature once it has been set .
The a ir tempe rature coming from the vents, the
b lower speed, and the a ir dis tribution are a lso
automatically a djusted . In all heati ng mode func­
tions except
defrost, the blower only switches to
a higher speed once the engine coolant has reached a certain temperat ure.
~ Adjusting the blower
The blower speed can be adjusted in small inc re­
ments using the
dial (!). The b lower should a l­
ways run at a low setting to prevent the windows
from fogging and to ensure a continuous ex­
change of air ins ide the vehicle. You can adjust
the volume of a ir generated by the blower to your
preference. To have the blower regulated auto­
mat ically, press the
IAU TOI butto n.
IA/C l Switching cooling mode on and off
The cooling system is turned on and off w ith the
IA/C l button. The air is not coo led and humidity is
not removed when cooling mode is switched off.
52
This can cause fog on the w indows. Coo ling mode
switches off automatically when the outside tem­
perature is below zero.
The temperature can be adjusted with the con ­
trol@ .
I• I • I Adjusting th e tempe rature
The temperature can be adjusted in sm all incre­
ments using the
d ia l@ .
IAUTO I Switching automatic mode on and off
The automatic mode is turned on using the
IAUTOI button. AUTO mode switches off once a
button in the climate cont rol system is pressed.
Automat ic mode maintains a constant tempera ­
ture inside the vehicle . Air temperature, airflow
and air distribution are controlled automatically.
Adjusting the air distribution
The air distribution can be adjusted w ith the con­
tro l@ . To have the air d istribu tion regulated au­
tomatica lly, press the
I AUTO l button.
The round a ir vents in the cockpit a re adjustable
¢ page 53.
To keep the front side windows from fogg ing up
i n damp weather, we recommend ope ning the
s ide a ir vents a nd tilting them to the side.

Cl 00 .-< N r--­N .-< 0 r--­Vl 00
-Never turn off the engine before the vehicle
has come to a complete stop.
- The brake booster and power steering only
work when the engine is running. If the en­ gine is off, you have to use more force when
steering or braking. Because you cannot
steer and brake as you usually would, this
could lead to accidents and serious injuries.
@ Note
Avoid high engine speed, full throttle, and
heavy engine load if the engine has not
reached operating temperature yet. You could
damage the engine.
@ For the sake of the environment
Do not let the engine run while parked to
warm up. Begin driving immediately . This re­
duces unnecessary emissions.
(D Tips
-Some noise after starting the engine is nor­
mal and is no cause for concern.
- If you leave the vehicle with the ignition
switched on, the ignition will switch off af­
ter a certain amount of time. Make sure that
electrical equipment such as the exterior
lights are switched off.
Stopping the engine
.,. Bring the vehicle to a full stop.
.,. Move the selector lever into the P position .
... Press the I START ENGINE STOPI button.
Emergency off function*
If it is absolutely necessary, the engine can also
be turned off while driving at speeds starting at
4 mph (7 km/h). To switch the engine off, press
the
I START ENGINE STOPI button twice in a row
br iefly or press and hold for longer than two sec­
onds.
A WARNING
- Never turn off the engine before the vehicle has come to a complete stop.
Driving
-Please note that the brake booster and pow­
er steering only work when the engine is
running. When the engine off, you must use
more force to steer or brake the vehicle. Be­
cause the usual steering and braking capa­
bility is not available, the risk of accidents or
. . . . mJunes increases.
-For safety reasons, always park the vehicle
with the selector lever in the P position.
Otherwise, there is the risk that the vehicle
could roll.
- After the engine has been switched off, the
radiator fan can continue to run for up to 10
minutes
-even with the ignition switched
off. It can also switch on again after some
time if the coolant temperature rises as the result of heat buildup or if the engine is al­
ready warm and the engine compartment is
also heated by the sun's rays.
@ Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the
engine is
switched off and there is a risk of damaging
the engine . For this reason, let the engine run
at idle for approximately two minutes before
shutting it off.
(D Tips
For up to 10 minutes after stopping the en­
gine, the radiator fan may turn on again auto­ matically or it may continue to run (even if
the ignition is switched off) for the following
reasons :
- The coolant temperature is increasing due
to trapped heat.
- If the engine is warm and the engine com­
partment also heats up from strong sun­
light.
Messages
Turn off ignition before leaving vehicle. Battery
is discharging
This message appears and a warning tone sounds
if you open the driver's door when the ignition is
..,
59

Cl co .... N ,....
N .... 0 ,....
Vl co
Emissions control
systems
Catal ytic conve rt er
The vehicle may on ly be driven with unleaded
gasoline, otherwise the catalyt ic converter will be
destroyed.
Never drive until the tank is completely empty.
The irregular supply of f uel that results from that
can cause engine m isfires. Uncombusted fuel will
enter the exhaust system, wh ich can cause over­
heat ing and damage to the catalyt ic converter .
A WARNING
The temperature of the exhaust system is
high, both when d riving and after stopping
the engine.
-
- Never touch the exhaust tail pipes once they
have become ho t. This could result in bu rns.
- Do not park your vehicle ove r flammable
materials such as g rass or leaves because
the high temperat ure of the em iss ions con­
trol system co uld s tart a fire.
- Do not apply underbody p rotectant in the
exha ust system area, because this inc reases
the risk of fi re.
On Board Diagnostic
System (OBD)
The On -Board Diagnostic System monitors the
engine and transmission components that influ­
ence emissions.
F ig . 177 Footwell on left side of the vehicle : connect ion
port for the On-Board Diagnostic System (OBD)
Chec king and Filling
On -Board Diagnostic System
Engine da ta can be read out at the On-Board Di­
agnost ic System connection port using a spec ia l
testing
dev ice~ fig. 177 .
Indicator light
If thP ¢'4 ind icator light blinks or turns on, there
is a ma lf u nction that is caus ing poo r emissions
quality and that cou ld damage the catalytic con­
verter .
Drive slowly to an a uthorized Aud i dea ler or au­
t h orized Audi Serv ice Facili ty to have t he mal­
f unct ion corrected.
A WARNING ..
Incorrect use of the connection port for the
On-Board D iagnostic System can cause ma l­
f u nctions, which can then result in accidents
and serious injuries.
- Only allow an authorized Audi dea ler or au­
thor ized Audi Service Fac ility to read out the
engine data.
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
-
F o r work in the engine compa rtment such as
checking and fill ing fl uids , there i s a risk of in­
jury , scalding, accident s, and b urn s. For thi s
re ason , follow all the warnings and general
safety pre cautions prov ided in the following
in ­
formati on. The engine compartm ent i s a dan­
gerou s area .
~ .&..
A WARNING
-----Turn the engine off.
- Sw itch the igni tio n off.
- Set the parking brake.
- P lace the se lector lever in the P position.
-Let the eng ine cool down.
-Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that you could
233

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
lubricating properties of oil diminish gradually
during normal vehicle use.
Unde r some c ircu mstances the eng ine o il should
be changed more frequently . Change oil mo re of­
ten if you drive most ly short distances, ope rate
the vehicle in dusty areas or under predominant ly
stop-and -go traffic condit ions, or have your vehi­
cle where temperatures remain below free zing
for extended periods.
Detergent additives in the oil will make fresh oil
l ook dark after the engine has been running for a
short time. Th is is normal and is not a reason to
change the oil more often than recommended.
Because of the problem of proper disposa l, along
with the special tools and necessary expertise re­
qu ired, we strongly recommend that you have
your oil changed by an authorized
A ud i de ale r or
a qualified service station .
If you c hoo se to change your o il y our self , please
note the following important information:
A WARNING
To reduce the risk of personal injury if you
must change the engine oil in your veh icle
yourself:
- Wear eye protection .
- To reduce the risk of burns from hot engine oil, let the eng ine cool down to the touch.
-
- When removing the o il drain plug with your
fingers, stay as far away as poss ible. A lways
keep your forearm paralle l to the ground to
help prevent hot o il from runn ing down your
arm .
- Drai n the oil into a container designed for
this pu rpose, one large enough to hold at
least the total amount of oil in your e ng ine .
- Engine oil is poisonous . Keep it well out of
the reach of ch ild ren .
- Cont inuous contact w ith used eng ine oi l is
harmful to your sk in. A lways protect your
sk in by washing oil off thoroug hly w ith soap
and water.
@ Note
Never mix oil addit ives with your engine o il.
These additives ca n damage your eng ine and
Ch eck ing and F illing
adverse ly affect yo ur Audi Limited New Vehi­
cle Warranty.
@ For the sake of the environment
- Before chang ing yo ur oil, first make sure
you know where you can proper ly d ispose o f
the used oi l.
- Always dispose of used engine o il properly.
Do not dump it on garden soil, wooded
areas, into open streams or down sewage
drains.
- Recycle used engine oi l by taking it to a used
engine oi l collection faci lity in you r area, or
contact a service station .
Cooling system
Coolant
The eng ine cooling system is fi lled w it h a m ixtu re
of purified water and coo lant additive at the fac ­
tory . This coolant must not be not c hanged.
T he coo lant level is mo nitored th ro ugh
the . in­
dicator light
<:!) page 12. However, we do recom­
mend occasionally checking the coolant leve l
manua lly.
If you must add coolant, use a mixture of wate r
and coolant additive . Mix ing t he coo lant add it ive
with dis tilled water is recommended.
Coolant additive
T he coolant add itive is made of anti-free zing and
cor rosion protect ion agents. On ly use the follow­
i ng coolant additives . These add itives may be
mixed wi th ea ch o the r.
Coolant additive Specification
G 13 TL 774 J
G12++ TL 774 G
The amount of coolant additive that needs to be
mixed with water depends on the cl imate where
the vehicle w ill be oper ated. If the coo lant add i­
t ive percentage is too low, the coolant can freeze
and damage the eng ine .
.,.
239

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
scope of maintenance and repairs which can be
carried out by vehicle owners.
Al so, sa fety a nd
en vir onment al
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transm ission parts wh ich an owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, test ing devices and other
equ ipment available to specially trained work­
shop personnel in order to assure proper per ­
formance, rel iability and safety of the veh icle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliability of your
veh icle and even void your vehicle warranty .
Therefore, proof of servicing in accordance with
the ma intenance sc hedule may be a condition for
upho ld ing a possib le wa rranty claim made within
the warranty period.
Above all, operational safety can be adversely af­
fected, creating unnecessa ry risks fo r you and
your passenger.
If i n doubt about any servicing, have it done by
your author ized Audi dealer or any other properly
equ ipped and qua lified workshop. We strongly
urge yo u to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled ma inte­
nance and necessary repairs. Your dealer has the
facilities, origina l parts and trained specialists to
keep your vehicle running properly .
Performing limited m aint ena nc e y our self
The follow ing pages describe a lim ited number of
p rocedures w hich can be per formed on your ve hi­
cle with ordinary tools, should the need arise and
trained personnel be unavai lable . Before per­
forming any of these procedures, always thor­
ough ly read a ll of the app licab le text and carefu l­
ly follow the instructions g iven . Always rigorously
observe the
W ARNING S provided .
Before you ch eck anything in the engine com ­
partment , always read a nd heed all WARNIN GS
c> & and c> & in Working in the engine compart­
ment on page 233 . Con
sum er In form ation
A WARNING
--
- Ser ious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extremely careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never risk pe rsonal inj ury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fu lly famil iar with these
or other proced ures with respect to the ve­
h icle, or are uncerta in how to pro ceed.
- Do not do any work without the proper tools
and eq uipment. Have the necessary wo rk
done by your authorized Audi dealer or an­
other proper ly 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
g ine is off . The radiator fan switches on au­
tomatically when the coolant reaches a cer­
tain tempe rature and will cont inue to run
until the coolant temperature d rops.
- Always sw itch off the ignition before anyone
gets under the vehicle.
- Always support your veh icle with safety
stands if it is necessary to work underneath
the vehicle. The jack suppl ied with the veh i­
cle is no t adequate for this pu rpose and
could collapse caus ing serious personal in­
jury.
- I f you must wor k unde rneath 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 se lector
lever (automatic transmiss ion) is in P (Park
position) and the park brake is applied.
II>
291

Convertible locking retractor
Activating . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Deactivating . . . . . . . . . . . . . . . . . . . . . . . . 227
Using to secure a child safety seat . . . . . . 226
Cooling mode (climate control system) . . . . 52
Cooling system Adding coolant . . . . . . . . . . . . . . . . . . . . . . 240
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Coolant level checking . . . . . . . . . . . . . . . . 240
Coolant temperature indicator . . . . . . . . . . . 8
I ndicator light . . . . . . . . . . . . . . . . . . . . . . . 12
Crank (power top emergency operation) . . . . 36
Crash data recorder ( EDR) . . . . . . . . . . . . . . . 91
Crosshairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Cruise control system Changing speed . . . . . . . . . . . . . . . . . . . . . . 72
Preselecting speed . . . . . . . . . . . . . . . . . . . . 72
Switching off . . . . . . . . . . . . . . . . . . . . . . . . 72
Switching on.. ............. .. .. .. .. .. 71
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Current fuel consumption . . . . . . . . . . . . . . . 21
D
Data connection . . . . . . . . . . . . . . . . . . . . . . 130
Data protection . . . . . . . . . . . . . . . . . . . . . . . 132
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . . 91
Date .. .. .. .. .. ............. .. .. .. .. . 173
Date display . . . . . . . . . . . . . . . . . . . . . . . . . 173
Daytime running light . . . . . . . . . . . . . . . . . . 38
Declaration of compliance . . . . . . . . . . . . . . 293
Defrosting (windows) . . . . . . . . . . . . . . . . . . . 53
DEF (instrument cluster) . . . . . . . . . . . . . . . . 21
Deluxe automatic climate control
refer to Climate control system (automatic) .S2
Determining correct load limit . . . . . . . . . . 257
Digital compass . . . . . . . . . . . . . . . . . . . . . . . 44
Digital Rights Management . . . . . . . . . . . . . 154
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Dimming the rearview mirror . . . . . . . . . . . . 42
Directory
refer to Contacts . . . . . . . . . . . . . . . . . . . . 119
Display
c refer to Audi virtua l cockpit (instrument 00
;::: cluster) . . . . . . . . . . . . . . . . . . . . . . . . . . 18, 20 r--
~ Distance driven . . . . . . . . . . . . . . . . . . . . . . . . 21 0 r--Vl 00
Index
Driver information system . . . . . . . . . . . . 18 , 20
Indicator lights . . . . . . . . . . . . . . . . . . . . . . . 9
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
On -board computer . . . . . . . . . . . . . . . . . . . 21
Outside temperature display. . . . . . . . . . . . 17
Service interval display . . . . . . . . . . . . . . . 243
Drives
refer to Media . . . . . . . . . . . . . . . . . . 154, 162
Drive select . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Driving economically . . . . . . . . . . . . . . . . . . . 56
Driving safely . . . . . . . . . . . . . . . . . . . . . . . . 179
Driving through water . . . . . . . . . . . . . . . . . . 56
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Dust filter
refer to Pollutant filter
DVD drive (media drives)
Dynamic volume 51
155
refer to System volume . . . . . . . . . . . . . . . 177
E
E-mail
117
Economical route . . . . . . . . . . . . . . . . . . . . . 141
Electromechanical parking brake . . . . . . . . . 61
Electromechanical steering . . . . . . . . . . . . . . 89
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 89
Electronic differentia l lock . . . . . . . . . . . . . . . 86
Electronic immobili zer . . . . . . . . . . . . . . . . . . 22
Electronic stabilization control (ESC) . . . . . . 86
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 13
Sport mode . . . . . . . . . . . . . . . . . . . . . . . . . 87
Emergency assistance . . . . . . . . . . . . . . . . . 272
Emergency braking function . . . . . . . . . . . . . 61
Emergency flashers . . . . . . . . . . . . . . . . . . . . 40
Emergency fueling . . . . . . . . . . . . . . . . . . . . 232
Emergency operation Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 232
Luggage compartment lid . . . . . . . . . . . . . . 28
Power top . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Emergency release
Se lector lever . . . . . . . . . . . . . . . . . . . . . . . . 69
Emergency starting . . . . . . . . . . . . . . . . . . . 283
Emissions control system Catalytic converter . . . . . . . . . . . . . . . . . . . 233
Energy managem ent . . . . . . . . . . . . . . . . . . . 91
297