2014 AUDI S4 coolant temperature

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. •
•

-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 tire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, 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 winter
tires are designed for the cond itions that
are typ ic al in those seasons. Aud i recom­
mends using w inter t ires du ring the win-
Glossary of tire and loading terminology
Accessory weight
means the comb ined weight (in excess of
those standard items which may be replaced)
of automatic tra nsmission, power steering,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory-installed equip­
ment (whether installed or not) .
Aspect ratio
means the ratio of the height to the width of
the tire in percent . Numbers of 55 or lower in­
d icate a low sidewall for improved steering re­
sponse and better overall handling on dry
pavement .
Bead
means the pa rt 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 s eparation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire.
Tire s an d wheel s 231
ter months . Low temperatu res signifi­
cantly decrease the elastic ity of summer
t ires, which affects traction and braking
ability. If summer tires are used in very
co ld temperatures, cracks can form on
the tread bars, res ulting in permanent
ti re damage that can cause loud drivi ng
noise and unbalanced tires. Aud i is not
responsib le for this type of damage.
- Burn ished, polished or chromed rims
must not be used in winter weather. Th e
surfa ce of the rims does not have suffi­
c ien t cor rosion pro te cti on for this and
c o ul d be pe rmanen tly damaged by road
salt or similar substances. This damage
is not covered by warranty.
Cold tir e inflation pressure
me ans the t ire press ure re commended by the
vehicle manufacturer fo r a tire o f a des igna ted
size that has not bee n driven for more than a
couple of miles (k ilomete rs) at low speeds in
the three hour pe riod before the tire press ure
is measured or adjusted.
Curb weight
means the weight o f a motor vehicle with
standard equipment including the maximum
capacity of fuel, o il, and coolant, air cond i­
tion ing and additional weight of optiona l
equipment.
E xtra load tire
means a tire design to operate at higher loads
and at higher inflation pressures than the cor­
responding standard tire. Extra load tires may
be identified as "XL", "xl", "EXTRA LOAD", or
"RF" on the sidewall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capacity of a single
axle system, measured at the tire-ground in-
ter~ces .
~
•
•

28 0 Index .:..:..:..::....::.. ...:..._ ___________________________ _
A
Accessories . . . . . . . . . . . . . . . . . . . . 64, 277
AC (automatic cl imate control) ... .. .. . . 77
adaptive cruise control Vehicles with manual transmission .. . 101
Adapt ive cruise control . . . . . . . . . . . . . . . . 99
C leaning the sensor .. ... .. .. .. .... . 205
Messages . . . . . . . . . . . . . . . . . . . . . . . . 107
Request for dr iver intervention . ..... . 105
Setting the driving program .. .. .. ... 104
Adapt ive dampers .......... .... .... . 113
Adapt ive light ................ ... .... 47
Adaptive Lig ht (defective) ... .. .. .... .. 22
Adding Eng ine coolan t .................... 222
E ng ine oil . .... .. ..... ... .. .. .... . 219
Windshield washer fluid ... .. .. .... . 228
Addit ional accessories
Addit ives 277
Eng ine oil .. ............. .. .. .. .. . 219
Ad justab le steering column . ... .. .... .. 80
Adjust ing
A ir dist ribution (automatic climate con -
trol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
I ns trumen t illum inat ion . .. .. .. .. .. . . 50
Steer ing column .. ..... ... .. .. .... .. 80
Temperature (automatic climate control) 78
A irbag
War ning/ indicato r ligh ts ... .... .... .. 20
A irbag system . . . . . . . . . . . . . . . . . 146, 162
Advanced Airbag System ........ .... 150
Advanced Airbag System components . 153
Care . .. .. .. ........ ........ ..... . 159
C hil dren . ............... .. .. .. .. . 168
Ch ild restr aints ........... .. .. .. .. . 169
Components (front airbags) .. .... .. . 153
Danger of fitting a child safety seat on
the front passenger seat . . . . . . . . . . . . 147
Disposal . .... ........... .. .. .... . 159
Front airbags . . . . . . . . . . . . . . . . 150, 151
H ow do the front airbags work? . .. .. . 155
H ow many airbags does my vehicle
have? .... ................... ... . 153
H ow the Advanced Airbag System com-
po nents work together ............. 154
I mpor tan t things to know .. .. .. .. .. . 14 6 Indicator light
... ... .. ..... .... . .. 156
Monitoring . ..... .. ... ..... ... .. .. 156
PASSENGER AIR BAG OFF light ... .. .. 157
Repairs ... .... .. ............. .... 159
Safety instructions ................. 158
S ide a irbags ..... ................ . 161
S ide cu rtain airbags ........... ... .. 164
Weight-sensing mat ............... 168
When must the sys tem be inspected? 156
Alcantara Cleaning ...... ................... 207
all-wheel drive
All wheel d rive 192
Winter tires . .. .. .. ........... .. .. 246
Alternator
refer to Generator . . . . . . . . . . . . . . . . . . 17
Anti-freeze
refer to Engine coolant system ....... 221
An ti-lock brak ing system ............. 186
W arning/ind icator lights . . . . . . . . . 18 , 19
An ti-slip regulation ................ . 186
Warning/ind icator lights ........... .. 18
Anti-theft alarm warning system ... .... . 32
An ti- theft systems
El ectronic immob ilizer .. ..... .... . .. . 38
Armrest ...... .. .. .. ... ....... ... .. . 60
Ashtray .. .. .. .. .. ............. .. .. . 63
As te ris k
Wha t does i t mean when something is
marked w it h an asterisk? . . . . . . . . . . . . . . 6
Audi braking guard
refer to b ra ki ng guard .......... .. .. . 99
Audi drive select ... ............. .... 113
Adaptive dampers ................. 113
Description ...... ................ . 113
Dynam ic steer ing ................. . 113
Setting the dr iv ing mode ........ .... 114
Spo rt differential . ............. .... 113
Audi Serv ice Repair Manuals and Litera-
ture 275
AUTO Automat ic climate control . . . . . . . . . . . . 78
Automat ic headlights .......... .. .. . 47
A ut o Lock . ..... .. .. .... .... ... .. .. . 32
Automat ic be lt retractor ............. 141

284 Index
Starting with jumper cab les . ....... . 266
Stopping . . . . . . . . . . . . . . . . . . . . . . 82, 84
E ng ine compartment
Safety instructions ...... .. .. .. .. .. . 214
Working the engine compartment 214
Eng ine coolant
Indicator light . . . . . . . . . . . . . . . . . . . . . 17
E ngine coolant system ...... .. .. .... . 221
Adding coolant ........... .. .. .. .. . 222
Checking coolant level ..... .. .. .. .. . 221
Check ing the eng ine coolant level .. .. . 221
Radiator fan .............. ... .. .. . 223
E ngine coolant temperature
Temperature gauge ....... .. .. .... .. 10
Engine hood
C losing ......... ......... ... .... . 214
How to release the hood ............ 214
E ng ine oil . .... ........... ........ . 216
Adding .. .. ............. .. .. .. .. . 219
Addit ives ... ................ ..... . 219
Changing . ................. ..... . 220
Check oil level ............ ... .... . 219
Consumption ............ .. .. .. .. . 219
Indicator light . . . . . . . . . . . . . . . . . 17, 21
Oil consumption ............ .. .... . 218
Oil grades .. ................ ... .. . 216
Pressure malfunction ...... .. .. .. .. . . 17
Sensor defective . . . . . . . . . . . . . . . . . . . . 21
Specification and viscos ity .. .. .. .... . 216
Engine speed limitation . . . . . . . . . . . . . . . 21
Environment Break- in period ............ ... .... . 195
Cata lytic converter ............ .. .. . 196
Disposing of your vehicle battery ..... 228
Driving at high speeds ..... .. .. .. .. . 197
Driving to minimize pollution and noise 197
Fuel ..... .. ..... ........... ... .. . 212
Fuel economy ............. ... .. .. . 197
L eaks under your veh icle . .. .. .. .. .. . 214
L ett ing the vehicle stand and wa rm up . 198
Proper disposal of drained brake fluid . 224
Proper disposal of drained engine coo l-
ant ..... .. ................ ..... . 222
Proper disposal of dra ined engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 219, 220
Recycling used engine oil ... .. .. .. .. . 219
Roof rack .. ... .... ...... .. .. .. .. .. 68 Unleaded fuel
.... ................ . 209
What shou ld I do with an o ld battery? . 228
EPC
refer to E lectronic power control . . . . . . 20
Ethyl alcohol (Fuel) . .. .. ...... ... .. .. 210
Event Data Recorder (EDR) ............ 186
Exhaust tail pipes
Cleaning .. .... .. ............. .... 205
Expansion tank .... ............. .... 221
Exterior lighting ... ................ .. 47
Exterior m irrors
Adjust ing . .. .. .. .. ........... .. .. . SO
Dimming .. .... .. ............. ..... 51
Heating . .. .. .. . .............. .. .. . SO
F
Fan
Radiator 223
Fastening Booster seats . . . . . . . . . . . . . . . . . . . . . 17 5
Convertib le child safety seats .. ... ... 174
Infant seats ... .. ... .......... .... 173
Fa stening eye s
refer to Tie-downs . . . . . . . . . . . . . . . . . . 72
Flat tire Changing ..... .. ................ . 255
flexib le fue l ....... ............. .... 210
Floor .. .... .... .. ................. . 74
Floor mats . ..... .. ................ . 133
Fog lights/rear fog light(s) ......... ... . 47
Folding the rear seats ............ .... . 69
Foot pedals . .... .. ............. .... 133
For the sake of the environment Gasoline fumes and the env ironment .. 212
Letting the engine warm up . . . . . . 80, 83
Refueling . .. .. .. ... .......... .... 212
Sav ing fuel by early upshifting . .. .. .. . 11
Front airbags Description .. .. .. .......... ...... . 150
How they work . .. .......... ...... . 155
Frontal collisions and the laws of physics 139
Front passenger's door emergency lock ing 38
Front seats Adjusting ... .. .. ....... ...... .. .. 130
Child restraints in the front seat .. .. .. 147