2014 AUDI TT ROADSTER coolant temperature

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

182 Tire s and wheel s
-Never mount used tires on yo ur vehicle if
yo u are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden t ire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when driving, al­
ways stop as soon as it is safe to do so
and check the wheels and tires for dam­
age.
(D Note
Please note that summer and wi nte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight
means t he comb ined we ight (in excess of
those sta ndard items which may be rep laced)
of au toma tic tra nsmission, power s teer ing,
power brakes, power windows, power seats,
ra dio, and heater, to the extent that th ese
items are availab le as factory -installed equip­
ment (whether installed or not) .
Aspect ratio
means t he ratio of the he ight to the w idth of
the tire in percent . Numbers of 55 or lower in ­
dicate a low sidewall for improve d steering re­
sponse and better overall handling on dry pavement .
Bead
means the part of the ti re that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.
Bead separation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire . typ
ica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures signif icant ly
decrease the e lasticity of summer tires,
which affects tract ion a nd brak ing ability.
If summer tires are used in very co ld tem­
peratures, cracks ca n form on the tread
bars, res ulting in permanent tire damage
that can cause loud driving no ise and un­
balan ced t ires. Audi i s not responsible for
th is type of damage .
Cold tire inflation pressure
means the tire p ress ure recommended by t he
vehicle manufacture r fo r a tire of a des igna ted
s iz e t hat has not bee n driven for more than a
coup le of miles (k ilometers) at low speeds in
t h e three hour period before the tire pressure
is measured or adjusted.
Curb weight
mea ns the we ight of a motor ve hicle with
standard equipment in clu din g the max imum
capacity of fuel, oil, and coolant, air condi ­
tioning and additional weight of optiona l
equipment.
Extra load tire
me ans a tire designed to ope rate a t higher
loads and at highe r inflation p ress ures than
the corresponding standard tire. Extra load
tires my be identified as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
Gross Axle Weight Rating ("GAWR ")
me ans the lo ad -c a rry ing c apac ity of a s ingle
axle system , measured a t the tire-ground in­
terfaces.
Gross Vehicle Weight Rating ("GVWR ")
mea ns the max imum total loaded we ight of
t h e ve hicl e. .,.

234 Index
F
Fan ... . ... ... .. .. ..... ... .. .. .... .. 69
Radiator ... .. . .. ..... ... .. .. .... . 174
Fasten ing
B ooste r seats ............ .... .. .. .
137
Conve rtible c hild safety se ats . .. .. .. . 135
Infant sea ts
F lat t i re 13 5
Changing .. ... ......... ... .. .. ... 209
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . 5 0
Fo ld ing master key w ith remote contro l .. 32
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . 97
For the sake of the environmen t
G asoline fumes and the environmen t ..
163
Le tting you r engine warm up ... .. .. . . 74
Refue ling . . . . . . . . . . . . . . . . . . . . . . . . 163
Saving fue l by early upshifting . ..... . . 10
Fr ont airbags
D escr ipt ion . . . . . . . . . . . . . . . . . . . . . . .
113
H owtheywork ...... .......... .... 118
Fronta l collisions and the laws of physics 102
F ront seats . . . . . . . . . . . . . . . . . . . . . . . . . 60
Ad justing ....................... ..
94
Ad just ing the manual seats . .... .... .. 61
C hi ld restra ints in the front seat ... .. . 110
Fu el
Additives ... ... . ...... ... .. .. .... .
161
Blended gasoline ........... .. .... . 161
Current fuel mileage . . . . . . . . . . . . . . . . 23
Fill er neck .. .. .. ...... .... ... .. .. . 162
Fue l gauge . ... ......... ... .. .. ... . 12
Fuel supp ly too low . . . . . . . . . . . . . . . . . 20
Gasoline ... ... .......... .. .. .. .. . 16 1
Gasoline additives ........ .... .... . 162
Octane rating . ........... .. .. .. .. . 16 1
Recommendation .... ... .. .. .. .... . 161
Refue lling . .. .. .. ..... ... .. .. .... . 163
Reserve . ... ... . ...... ... .. .. .... .. 1 2
Tank capacity .............. .. .... . 224
Unlock ing the fue l filler flap by hand .. 164
Fu el economy messages (efficiency pro-
gram) ... .... ... . ...... ... .. .. .... ..
27
Fuse ar rangement ....... .. .. .. .. .. . 2 14
G
Garage doo r opener ( Homelink) .... . .. . 89
Gas discha rge lamps ..... .. ... ..... ..
2 16
Ga uges
Engine coolant temperature . . . . . . . . . .
11
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 10
General illustration
Instruments and controls .. ... .. .. .. .. 8
Generator (warning/ indicator l igh ts) . .. .
16
G lossary of tire and loading terminology 182
G love compartment . . . . . . . . . . . . . . . . . . 66
G ross Vehicle We ight Rating (GVWR) ... 223
H
Head lights ..... .. .......... ... ... .. 48
adaptive light . . . . . . . . . . . . . . . . . . . . . . 49
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 156
defective . . . . . . . . . . . . . . . . . . . . . . 20, 2 1
Fron t fog lights . . . . . . . . . . . . . . . . . . . . 50
Switching off .... ... .. ..... ... .. .. . 4 8
Switching on ..... .. ... ..... ... .. .. . 48
Washe r system . . . . . . . . . . . . . . . . . . . . . SS
Xenon headlights .............. .. .. . 48
He ad restr aints .. .. ............. .. ... 95
Adjusting ..... .. .. .... .... ... .. .. . 95
Heated
exter io r mir ro rs . . . . . . . . . . . . . . . . . . . .
52
fron t seats (cl ima te control) ..... .. .. . 72
rear window ...................... . 71
Heated seats . . . . . . . . . . . . . . . . . . . . . . . . 72
Heate d washer jets
Wiper and washer system .. ... .. .. .. .
54
H eating .. .. ...... ............. ..... 68
Hig h beam . . . . . . . . . . . . . . . . . . . . . . 48, 50
High voltage warning label .. ... .. .. .. 223
Hill Descent Assist . ... .. ......... ... . 85
Hill ho ld assist
Starting on hills ............... .....
76
Homel in k unive rsal remote control . ... . 89
Hood Open ing .. .. .. .. .................
165
Re le a se lever . . . . . . . . . . . . . . . . . . . . . 165
Hor n .... .. .. .. .. ............... .. .. 8
How many ai rba gs does my vehicle have?
115