cooling AUDI S5 COUPE 2016 User Guide

Check ing and F illing
blink until you add coolant and the level has been
restored to normal. Even though there is an e lec ­
tr ic coolant level sensor, we still recommend you
check the coo lant level from time to time.
Coolant los s
Coolant loss may indicate a l e ak in the cooling
system. In the event of coolant loss, the cooling
syst em should be insp ected immediately by your
authorized Audi dealer. It is not enough merely
to add coolant.
I n a
s e aled system, losses can occur only if the
boiling point of the coo lant is exceeded as a re­
sult of overheating.
A WARNING
The cooling system is under pressure and can get very hot. Reduce the risk of scalding from
hot coolant by following these steps.
- Turn off the eng ine and allow it to cool
down .
- Protect your face, hands and arms from es­
caping fluid and steam by covering the cap
with a large, thick rag.
- Turn the cap slowly and very carefully in a
counter-clockwise direction wh ile apply ing
l ight, downward pressure on the top of the
cap .
- To avo id being burned, do not sp ill anti ­
freeze or coolant on the exhaust system or
hot eng ine parts . Under certain conditions,
the ethy lene g lycol i n engine coolant can
catch fire.
{Q) Note
Do not add any type of radiator leak seala nt
to your veh icle's engine coolant . Adding radia­
to r repa ir fluid may adversely affec t the func­
tion and performance of yo ur cooling system
and could result in damage not covered by
your New Vehicle Limited Warranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the eng ine compart­
ment,
a lwa ys re ad an d heed all WARNINGS
198
¢ A in Working in the engine compartment on
page 191.
Requireme nt: The re must be a res idual amount
of coo lant in the expans ion tank
~CD-
.,,. Turn off the engine .
.,,. Let the engine cool down.
.,,. Place a thick rag over the coolan t expa nsion
tank ¢page 197, fig. 163 and
carefull y turn
the cap counter-clockwise ¢.&_ .
.,,. Add coo lant mixed in the correct ratio
~ page 196, Coolant up to the MAX marking.
.,,. Make sure that the fluid level remains stab le.
Add more coolant if necessary .
.,,. Twist the cap on aga in tightly.
Replacement engine coolant must conform to ex­
act specifications ¢ page 196, Coolan t.
We recommend using only coo lant additive
G l2 +
+ , Gl3
or in an emergency Gl2+. Do not use a
different additive . In an emergency use plain wa ­
ter unt il you can get the correct addit ive and can
restore the correct rat io. Th is should be done as
soon as possible.
If you have lost a considerable amount of cool­
ant, then you should add cold antifreeze and cold
water only when the engine is cold.
Always use new engine coo lant when refilling .
Do not fi ll coolant above the "MAX " mark. Excess
coolant will be forced out th rough the pressure
relief valve in the cap when the engine becomes
hot.
A WARNING
- The cooling system is under pressure and can get very hot. Reduce the risk of scalding
from hot coolant by following these steps.
- Turn off the engine and a llow it to cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering the
cap with a large, thick rag.
- Turn the cap s low ly and very ca refully in a
counter-clo ckwise direction wh ile app ly ing
li ght, downward pressure on the top o f
the cap.
~

,-1 N
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,-1 I.Cl U"I
,-1 I.Cl ......
-To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­ ant can catch fire.
- Antifreeze is poisonous. Always store anti­
freeze in its original container and well out
of the reach of children.
- If you drain the coolant, it must be caught
and safely stored in a proper container
clearly marked "poison".
(D Note
-Do not add coolant if the expansion tank is
empty . Air could enter the cooling system
and damage the engine.
If this is the case,
do not continue driving. Seek professional
assistance.
- Coolant pollutes the environment and could
cause an engine fire. Excess coolant will be
forced out through the pressure relief valve
in the cap when the engine becomes hot.
-If, in an emergency, only water can be add­
ed, the correct ratio between water and an­
tifreeze c::>
page 196 must be restored as
soon as possible.
@) For the sake of the environment
Drained coolant should not be reused. Always
dispose of used coolant while observing all
environmental regulations.
Radiator fan
The radiator fan switches on automatically by it­
self.
The radiator fan is driven by the engine via the V­
belt . The viscous clutch regulates the speed of
the fan according to the temperature of the cool­
ant.
An auxiliary electric radiator fan* switches on and
off depending on coolant temperature and other
vehicle operating conditions.
After you switch the engine off, the auxiliary fan
can continue running for up to 10 minutes -even
Checking and Filling
with the ignition off. It can even switch on again
later by itself c::>
&, if
- the temperature of the engine coolant rises due
to the heat build-up from the engine in the en­
gine compartment, or
- the engine compartment heats up because the
vehicle is parked in intense sunlight.
A WARNING
-To reduce the risk of personal injury never
touch the radiator fan.
- The auxiliary electric fan is temperature
controlled and can switch on suddenly even
when the engine is not running.
- The auxiliary radiator fan switches on auto­
matically when the engine coolant reaches a
certain temperature and will continue to run
until the coolant temperature drops.
Brake fluid
Checking brake fluid level
The broke fluid level con be checked with o quick
glance .
Fig. 164 Engine compartmen t: Cover on the brake flui d
re servoir
Before you check anything in the engine compart ­
ment,
always read and heed all WARNINGS
c::> _.& in Working in the engine comportment on
page 191.
.,. Read the brake fluid level from the brake fluid
reservoir c::>fig.164,
c::>poge 193, fig .160 . The
brake fluid level must be between the "MIN"
and "MAX" markings.
199

Index
Child safety seats
Booster seats . . . . . . . . . . . . . . . . . . . . . . . 15 9
Conve rt ible ch ild seats . . . . . . . . . . . . . . . 157
Danger of using ch ild restraints in the front
sea t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
H ow do I properly install a child safety seat
i n my ve hicle? ... ... ... ... .. .. .. .. .. . 154
I nfant seats . . . . . . . . . . . . . . . . . . . . . . . . 156
L A TCH system . . . . . . . . . . . . . . . . . . . . . . 165
Safety ins tructions . . . . . . . . . . . . . . . . . . . 154
Unused safety belts on the rear seat . . . . 156
C hi ld seats . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Secur ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . 60
C le ani ng . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Climate control system . . . . . . . . . . . . . . . . . 68
Automatic recircu lation . . . . . . . . . . . . . . . . 7 1
Supp lementary heater . . . . . . . . . . . . . . . . . 7 1
synchronizing . . . . . . . . . . . . . . . . . . . . . . . . 7 1
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C losing
Sun blind . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Closing/opening at t he lo ck cylinde r. . . . . . . . . . . . . . . . . . . . 3 6
by remo te con trol . . . . . . . . . . . . . . . . . . . . 34
with the cen tra l locking switch . . . . . . . . . . 35
with the convenience key . . . . . . . . . . . . . . . 34
Com ing home . . . . . . . . . . . . . . . . . . . . . . . . . 45
Compact spare tire . . . . . . . . . . . . . . . . . . . . 225
also refer to Spare tire . . . . . . . . . . . . . . . 225
Compartments . . . . . . . . . . . . . . . . . . . . . . . . 61
Compass in the mirror . . . . . . . . . . . . . . . . . . 52
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Consumer informa tion . . . . . . . . . . . . . . . . . 2 44
Consumer I nformat ion . . . . . . . . . . . . . . . . . 119
Contacting NH TSA . . . . . . . . . . . . . . . . . . . . 119
Convenience key
I ndicator l igh ts . . . . . . . . . . . . . . . . . . . . . . 76
S tarting eng ine (STAR T ENG INE S TOP but -
ton) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Stopping the engine (START ENGI NE STOP
button) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Sw itching on ignition . . . . . . . . . . . . . . . . . . 75
un locking/ locking . . . . . . . . . . . . . . . . . . . . 34
Convenience opening/closing . . . . . . . . . . . . 39
Conve rt ible ch ild safety seats . . . . . . . . . . . 157
250
Convertib le locking retracto r
Activating . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Deact ivat ing . . . . . . . . . . . . . . . . . . . . . . . . 163
U sing to secure a child safety seat . . . . . . 162
C oo lant system . . . . . . . . . . . . . . . . . . . . . . . 196
Cooling mode (automatic cl imate control) . . 69
Cooling System Expansion tank. .. .. .. ............. .. 197
Co rnering light . . . . . . . . . . . . . . . . . . . . . . . . 44
Cruise control Changi ng speed . . . . . . . . . . . . . . . . . . . . . . 81
P resetting yo ur speed . . . . . . . . . . . . . . . . . 81
Switc hing off . . . . . . . . . . . . . . . . . . . . . . . . 81
Swi tc hin g on . . . . . . . . . . . . . . . . . . . . . . . . . 80
Cruising range . . . . . . . . . . . . . . . . . . . . . . . . . 24
( u pholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
D
Data re corder . . . . . . . . . . . . . . . . . . . . . . . . 169
Date disp lay . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Daytime run ning lights . . . . . . . . . . . . . . 44 , 45
De clara tion of compli ance
Adap tive cruise contro l . . . . . . . . . . . . . . . 247
Audi s ide ass ist . . . . . . . . . . . . . . . . . . . . . 24 7
Cell phone package . . . . . . . . . . . . . . . . . . 247
Convenience key . . . . . . . . . . . . . . . . . . . . . 247
E lectronic immobili zer. . . . . . . . . . . . . . . . 247
Homelink universal remote contro l . . . . . 247
Remote control key . . . . . . . . . . . . . . . . . . 247
Defect ive light bu lb wa rning . . . . . . . . . . . . . 21
Defrosting (windows) . . . . . . . . . . . . . . . . . . . 70
Dete rm ining co rrect load lim it ........ .. 219
D igi tal cloc k . . . . . . . . . . . . . . . . . . . . . . . . . . 12
D igital compass . . . . . . . . . . . . . . . . . . . . . . . 52
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 242
D imm ing t he rearv iew m irror . . . . . . . . . . . . 48
Doors emergency locking . . . . . . . . . . . . . . . . . . . . 36
Driver informat ion system . . . . . . . . . . . . . . . 23
En hanced shift indicato r . . . . . . . . . . . . . . . 27
Open door or front lid warning . . . . . . . . . . 23
Outs ide temperature display. . . . . . . . . . . . 23
Sound system display . . . . . . . . . . . . . . . . . 23
D river seat
refer to Seating position . . . . . . . . . . . . . . 113
D rivi ng econom ica lly . . . . . . . . . . . . . . . . . . 179