cooling AUDI S4 2014 User Guide

Do not fill coolant above the "MAX" mark. Ex­
cess coolant will be forced out through the pressure relief valve in the cap when the en­
gine becomes hot .
_& 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 allow itto 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 slowly and very carefully in a counter-clockwise direction while
applying light, downward pressure on
the top of the cap .
- To avoid being burned, do not spill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts . Under certain
conditions, the ethylene glycol in en­
gine coolant can catch fire.
- Antifreeze is poisonous. Always store an­
tifreeze 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 con ­
tainer clearly marked "poison".
(D Note
- Do not add coolant if the expansion tank
is empty. Air could enter the cooling sys­
tem 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 cool­
ant will be forced out through the pres­
sure relief valve in the cap when the en­
gine becomes hot.
- If, in an emergency, only water can be
added, the correct ratio between water
and antifreeze ¢
page 221 must be re­
stored as soon as possible.
Checking and filling 223
'
@) For the sake of the environment
Drained coolant should not be reused. Al­
ways dispose of used coolant while observ­
ing all environmental regulations.
Radiator fan
The radiator fan switches on automatically by
itself .
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 coolant.
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 with the ignition
off. It can even switch
on again later by itself ¢.&. , if
- the temperature of the engine coolant rises
du e to the h eat build-up from th e engin e 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 injury nev-
er 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 au­
tomatically when the engine coolant reaches a certain temperature and will
continue to run until the coolant temper­
ature drops. •
•

282 Index
Child restraints
Dang er of using child restraints in th e
front seat . .... .... ......... ..... . 147
Where can I get addit ional information
about child restra ints and their use? . . 185
Child restraint system anchors ..... .. . 181
Ch ild safety .. ................ ... ... 167
Conve rtible locking retracto r .. .. .....
177
Important safety instructions fo r using
ch ild safety seats . . . . . . . . . . . . . . . . . . 17 0
I mportant things to know when driving
with chi ldren ........... ... .. .... .
167
Installing a child restraint using the
LATCH system . . . . . . . . . . . . . . . . . . . . . 182
Lower anchorages .......... .. .... . 182
Mounting and releasing the anchorage
hook .. .... .......... ...... ... .. . 182
Tether anchors . . . . . . . . . . . . . . . . . . . . 183
Tether straps .......... .. .. .. .. .. . 183
Child safety locks Power windows . ..... .... .. .. .. .. .. 43
Rear doors . .............. ... .. .. .. 42
Child safety seats .................. .
173
Booster seats . . . . . . . . . . . . . . . . . . . . . 17 5
Convertible child seats .... .. .. .... .
17 4
Convertible locking retracto r .. .. .....
177
Danger of using child restraints in the
front seat .. .......... ...... ... .. . 147
H ow do I properly install a child safety
seat in my vehicle? ...... .. .. .. .. .. .
170
Infant seats ............. .. .. .. .. . 173
I nstalling . .. .... ........ .. .. .... .
177
LATCH system .. .. ...... .. .. .. .... . 182
Safety instructions ................ . 170
Unused safety belts on the rear seat . .
172
C ig are tte lighte r . . . . . . . . . . . . . . . . . . . . . 63
Cleaning .. .. ................ ... .. .
204
Climate controls . . . . . . . . . . . . . . . . . . . . . 76
C limate control system
Automatic recirculation . . . . . . . . . . . . . .
79
Supp lementary heater . . . . . . . . . . . . . . . 79
synchronizing .. ........ .. .. .. .... .. 79
C lock ....... .......... ...... ... .. .. 12
C losing
Power windows .......... .. .. .... .. 43
Sliding/tilting sunroof ...... ..... .. .. 44
Sunshade .. ................ ... ... . 44 Closing/opening
at the lock cylinder . . . . . . . . . . . . . . . . . . 38
by remote control . . . . . . . . . . . . . . . . . . 35
with the centra l locking switch ... .... . 36
wi th the conven ience key . . . . . . . . . . . . . 36
Cold tire inflation pressure ........ .. .. 234
Coming home ..... ................ .. 48
Compact spare ti re .............. .... 252
also refer to Spare tire .......... .. .. 252
Compartments . . . . . . . . . . . . . . . . . . . . . . 66
Compass in the mirror ..... ... ..... .. . 56
Compliance ..... .. .. ... ........ .. .. 278
Consumer Information . . . . . . . . . . 136, 275
Contac ting NHTSA . ... .......... .. .. 136
Controls Cleaning . ..... .. .. ... ........ .. .. 206
Convenience key Indi cator lights .. ... .......... .. .. . 84
Starting engine (S TART ENGINE STOP
button) ... .... .. ... .. ........ .. .. . 83
Stopping the engine (START ENGINE
STOP button) . . . . . . . . . . . . . . . . . . . . . . 84
Switching on ignition ........... .... . 83
unlocking/locking ............. .... . 36
Convenience opening/closing ..... .. .. . 43
Convertib le child safety seats ......... 17 4
Convertib le locking retractor
Activating ... .. .. ............. .. ..
179
Deact ivat ing ... .. ... .... ....... ... 180
Using to secure a child safety seat
1.77, 179
Coolant system .... .. ........... .. .. 221
Cooling mode (automatic climate control) 77
Cooling System Expansion tank . .. .......... ...... . 221
Cornering light .... .. ........... .. .. . 47
Cruise control Changing speed .. ............. .. .. . 89
Presetting your speed .......... .... .
90
Switching off .... ... .......... .. .. . 90
Switching on ... .. ... .......... .. .. . 89
Cruising range ... .. ............. .... . 25
(upholder .. .... .. ............. .... . 65
D
Data recorder . . . . . . . . . . . . . . . . . . . . . . 186
Date display .... .. ............. .... . 12