2013 AUDI S8 coolant temperature

24 2 Ch ecking and filling
scalding from hot coolant by following
these steps .
- Turn off the eng ine and a llow it to cool
down.
- Protect your face, hands and arms from escaping flu id and steam by cover ing
the cap with a large, thick rag .
- Turn the cap slowly and very carefully
i n a counter-clockwise direction while
apply ing l ight, downwa rd press ure on
the top of the cap .
- To avo id being burned, do not spi ll an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts . Under certain
conditions, the ethylene glyco l in en­
gine coolant can catch f ire .
- Antifreeze is poisonous . Always store an­
tifreeze 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
tainer clear ly marked "poison".
@ Note
- Coolant po llutes the env ironment and
could cause an engine fire . Excess coo l­
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 water
and antifreeze
c::> page 240 must be re­
stored as soon as possible .
@ For the sake of the environment
Drained coolant should not be re used. Al­
ways dispose of used coolant while observ­
ing all environmental regulat ions .
Radiator fan
The radiator fan switches on automatically by
itself
T he radiator fan is driven by the engine via the
V-be lt . The viscous clutch regulates the speed
of the fan accord ing to the temperature of the
coolant. An a
uxiliary electric radiator fan* switches on
and off depend ing on coolant temperature
and other vehicle operat ing condit ions .
After yo u sw itch the engine off, the aux iliary
f an can continue running for up to 10 minutes
- eve n wit h the ignit ion off. It can even switc h
on again later by itself
c::> &. , if
- t he tempe rature of the engine coo lant rises
due to the heat build -up from the engine in
the engine compartment, or
- the engine compa rtment heats up because
the vehicle is parked in i ntense sunlight.
_& WARNING
- To reduce the risk of personal injury nev­
er touch the radiator fan.
- The auxiliary electric fan is temperat ure
controlled and can sw itch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan sw itches on au­
tomatically when the engine coo lant
reaches a certai n temperature and will
continue to run until the coolant temper­
ature drops .
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
F ig . 201 E ngin e compart men t: cover on the brake fluid
r eservo ir
Before you check a nyth ing in the engine com­
partment,
always read and hee d all WARN ­
INGS c::> .&. in Working in the engine compart-
ment on page 232. .,..

250 Tire s and wheel s
-Never mount used tires on yo ur vehicle if
you 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 steer ing,
power brakes, power windows, power seats,
radio, 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 improved 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 and 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 is not responsible for
th is type of damage .
Cold tire inflation pressure
means the tire p ressu re recommended by t he
vehicle manufacturer fo r a tire of a des igna ted
s iz e that 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 cl uding 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 t ire design to operate at higher loads
and at h igher inflation pressures than the cor­
responding standard tire . Extra load tires may
be identified as "XL", "x l" , "EXTRA LOAD", or
"RF" on the sidewall.
Gross A xle Weight Rating ("GAWR ")
means 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 maximum total loaded we ight of
t h e ve hicl e. .,.

304 Index
Declaration of compliance
Adaptive cruise control ............. 299
Audi side assist ................... 299
Cell phone package ....... .. .. .... . 299
Convenience key .......... .... .... . 299
Electronic immobilizer ......... .. ... 299
H omelink ® universal remote control .. 299
Remote control key ........... .. .. . 299
DEF What does this mean when it appears in
the trip odometer display? ..... .. .. .. 26
Defective light bulb warning . . . . . . . . . . . 21
Defrosting (windows) ....... .. .. .. .. . . 80
Deluxe automatic climate control . . . . . . . 79
Determining correct load limit ... .. .. . 258
Dig ital compass ..... ..... ... .. .. .. .. 55
Dimensions
. ...... ........ .. .. .... . 291
Dimming the rearview mirror .. .. .. .. . . 54
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Door/rear lid warning . . . . . . . . . . . . . . . . . 23
Doors M echanical ch ild safety lock .. .. .... .. 40
Power child safety lock .... .. .. .. .. .. 40
Driver information system CD/radio display . . . . . . . . . . . . . . . . . . . . 23
Door/rear lid warning . . . . . . . . . . . . . . . 23
Eff iciency program . . . . . . . . . . . . . . . . . . 25
Ex terior temperature display . .. .. .. . . 23
On-boa rd comp uter ....... .. .. .. .. . .
Driver seating position
drive select
adaptive air suspension/sport ... .. .. .
Adaptive dampers ........ .. .. .... .
Curve light .. ... .... ..... .. .. .. .. .
Dynamic steering ............. .. .. .
Engine sound ......... .... ... .. .. .
Safety belt tensioner ...... .. .. .... .
Sport differential ......... .. .. .. .. .
Drive select
.. ... .. ..... ... .... .. .. .
Driving safely ... ........ .. .. .. .... .
Driving through water 24
135
109
109
109
109 109
109
109
109
134
208
Driving time . . . . . . . . . . . . . . . . . . . . . . . . 24
Duplicate key . . . . . . . . . . . . . . . . . . . . . . . 30
Dust filter
refer to Pollutant filter (automatic A/C
system) .. .. ... .......... .. .. .. .. .. 78
Dynamic steering . . . . . . . . . . . . . . . 22, 109
E
Easy entry fea ture . .... .......... .. .. . 82
EDL
refer to Electronic differential lock .. .. 198
Efficiency program . . . . . . . . . . . . . . . . . . . 25
Fuel economy messages . . . . . . . . . . . . . 25
Other equ ipment . .......... ...... .. 25
E lectrica l accessories (sockets) . . . . . 67, 73
El ectromechanical pa rking brake
Emergency b raking ............ .. .. . 87
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 85
Parking ... .... .. .. ... ........ .. .. . 86
Releasing and closing ............ .. . 85
Starting assist . . . . . . . . . . . . . . . . . . . . . 86
Starting from rest ............. .... . 86
Starting off w ith a trailer ........ .. .. . 87
Warning/ind icator lights .. ... ..... .. . 15
E lectronic differential lock ........ .. .. 198
El ectronic differential lock (EDL)
Warning/indicator lights .......... .. . 19
Electronic immob ilizer . . . . . . . . . . . . 26, 31
Electronic power control (EPC)
warning/indicator light . . . . . . . . . . . . . . 20
El ectronic speed limit er .......... .. .. . 29
Electronic Stabilization Control (ESC) ... 198
Warning/indicator lights .. ... ..... .. . 18
Emergency actuation Doors . ... .... .. .. ... .......... .. . 36
Luggage compartment lid ....... .... . 39
Parking lock ..... ............. .... 120
Power sunroof ... ..... ........... .. 43
Emergency braking ... ........... .. .. . 87
Eme rgency flasher .... .. ... ..... .. .. . 46
Warning/indicator lights .......... .. . 22
Emergency operation
Panoram ic sunroof ..... .. ... ..... .. .
Sun shade (roof) . ................ . .
Emergency starting 44
44
284
Emergen cy to wing ................ .. 286
Emergency warn ing triangle .. ... ... .. 270
Energy management ............ .. .. 203
En gine
Compartment .. .. ... .......... ... .
Coolant ... .. .. .. ............. .. . .
Data
. .. .. .... .. ... .. .......... ..
234
240
292
Start-Stop-System .. ........... .. .. . 87

starting .... ................ ... .... 83
Starting with jumper cables . ... .. .. . 284
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Engine compartment ....... .. .. .. .. . 234
C losing the hood ......... .. .. .. .. . 233
Opening the hood .............. .. . 232
Safety instructions ................. 232
Working in the engine compartment .. 232
Engine coolant . ........... .. .. .. ... 240
Adding coolant ........... .. .. .. .. . 241
Checking the engine coolant level .. .. . 240
Expansion tank .............. ... ... 240
Malfunction symbol .......... ... .. .. 16
Radiator fan ............. .... .. .. . 242
Temperature gauge ....... .. .. .. .. .. 10
Engine oil ... ................ ... ... 235
Adding .... ................ ... ... 238
Additives ... ................ ... ... 238
Changing .. ............. .... .. ... 239
Checking oil level ......... .. .. .. .. . 238
Checking the engine oil level .. .. .. .. . 237
Consumption ............... .... .. 238
Indications and conditions requiring ex-
tra checking ............. .... .. ... 23 7
I ndicator light . . . . . . . . . . . . . . . . . . . . . 17
O il consumption .......... .. .. .. .. . 236
Oil grades .. ................ ... ... 235
Oil level symbol ................ .... 20
Pressure malfunction ......... ..... .. 17
Recommended oil check intervals .. .. . 237
Sensor defective . . . . . . . . . . . . . . . . . . . . 21
Specification and viscosity .. .. .. .. .. . 235
Engine sound ................ ... ... 109
Engine speed limitation ....... .. .. .. .. 20
Engine start-stop mode
refer to Start-Stop-System . .. .. .. .. .. 89
Engine start system (indicator lights) . ... 17
Entry assistance . . . . . . . . . . . . . . . . . . . . . 63
Environment Break-in period ........... .. .. .. ... 206
Catalytic converter . ....... .. .. .. .. . 207
Disposing of your vehicle battery .... . 247
Driving at high speeds ...... ... ... .. 209
Driving to minimize pollution and noise 208
Fuel ... .. .. .. ............. .. .. ... 230
Fuel economy ............ .... .. .. . 208
Leaks under your vehicle ............ 232
Letting the vehicle stand and warm up. 209
Index 305
Proper disposal of drained brake fluid . 243
Proper disposal of drained engine cool-
ant ....... ... .. .. ............... 241
Proper disposal of drained engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 238, 239
Recycling used engine oil ............ 238
Unleaded fuel .. .. .. . .. .... ........ 228
What should I do with an old battery? . 247
EPC
refer to E lectronic power control (EPC) . 20
ESC
refer to Electronic Stabilization Control
(ESC) ............................ 198
ESC (Electronic Stab ilization Control)
Warning/ind icator lights ............ . 18
Event Data Recorder (EDR) ............ 198
Exhaust tail pipes .. .. .............. . 222
Expansion tank .. .. ................. 240
Exterior lighting . .. ................. . 45
Exterior mirrors Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . 54
Dimming ... ... .... ................ 54
Heating ... .. .. .. .... ............. . 54
Exterior temperature display ........ .. . 23
F
Fastening
Booster seats .. .. .... ......... .... 184
Convertib le child safety seats .... .. .. 183
Infant seats . . . . . . . . . . . . . . . . . . . . . . 182
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . 140
Fo lding table .. .. .. .. ............... . 68
Foot pedals ... .. .... ... .......... .. 139
For the sake of the environment Gasoline fumes and the environment .. 230
Reducing engine noise by ear ly upshift-
ing ....... .. .. .. .. .. ........... .. . 10
Refueling . .. .. .. .. ............... 230
Saving fuel by early upshifting ....... . 10
Four zone automatic climate control ..... 79
Front airbags Description .. .. .. ................. 156
How they work . .. ................. 161
Frontal collisions and the laws of physics 145
Front passenger seat adjustment . . . . . . . 63
•
•

306 Index
Front seats . ............... ... .... .. 57
Adjusting . ................. ..... . 136
Child restraints in the front seat ... .. . 154
Fuel Addit ives . .... ........... .. .. .... . 228
Bl ended gasoline .......... ... .... . 228
Current consumption . . . . . . . . . . . . . . . . 24
Economy messages (efficiency program) 25
Fuel filler flap emergency relea se .. .. . 231
Fuel filler neck ............. .. .... . 229
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Gasoline ... ... ... .... ......... .. . 228
Gasoline additives ............ .. ... 229
L ow fuel level symbo l . . . . . . . . . . . . . . . 21
Octane rating .......... .. .. .. .. .. . 228
Recommendation .......... ... .... . 228
Refue lling . ................. ..... . 230
Reserve .................... ..... .. 11
Tank capacity . . . . . . . . . . . . . . . . . 11,292
Fuses Assignment ...................... 279
Replacing .. ................ ..... . 279
G
Garage door opener (Homelink®) . .. .. . 132
Garment hooks .. ... .... ......... .. .. 75
Gas discharge lamps ......... ... .. .. . 283
Gauges Engine coolant temperature .. .. .. .... 10
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Speedometer . . . . . . . . . . . . . . . . . . . . . . 26
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 11
Trip odometer . . . . . . . . . . . . . . . . . . . . . 26
General illustration ............ .... ... 8
Generator . ................. .. .... .. 16
Glossary of tire and loading terminology 250
Glove compartment (cooled) ...... ..... 74
Gross Vehicle Weight Rating (GVWR) ... 290
H
Headlights
Cleaning system ............ .. .... .. 52
Defective . . . . . . . . . . . . . . . . . . . . . . . . . 21
He adlig ht range contro l . . . . . . . . . 21, 45
High beam assist .............. ... .. 48
Washer reservoir ............. .. ... 247 Head
restraints . . . . . . . . . . . . . . . . . 64, 138
Adjusting ..... .. ................. 138
H eated
exter ior mirrors . . . . . . . . . . . . . . . . . . . . 54
rear window ... .. ............. .... . 80
seats ......... .. .. .............. .. 80
windshield washer spray nozz les . . . . . . 52
H eating .. .. .. .. .. .. ............. .. . 78
Heavy clothing and safety belts ........ 147
High beam . ..... .. ............. ..... 47
High voltage warning label ..... .. .. .. 290
Hill descent contro l ................ . 118
Homelink ® un iversal remote control ... 132
Hood (release lever) ... .......... .. .. 232
Horn ..... ..... .. .. .............. ... 8
How are child restraint system anchors re-
lated to child safety ............. .. .. 189
How many air bags does my vehicle have? 159
How often should I check my tire pres-
sures? ......... .. .. .............. . 256
How safety belt pretens ioners work .. .. 150
Hydroplaning ... .. ............. .... 260
I
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . 26
Important things to do before driving .. 134
Improperly worn safety belts .......... 150
Indicator lights
refer to Warning/indicator lights ..... . 11
Infant seats .. .. .. ... .......... .... 182
Installing child safety seats Safety belts . . . . . . . . . . . . . . . . . . . . . . 186
Installing the upper tether strap on the
anchorage . ..... .. ................. 194
Instruments Adjusting the light ing .......... .... . 50
Instruments and controls
General illustration . . . . . . . . . . . . . . . . . . 8
Instrument cluster .................. 10
Interior lighting
Ambience lighting ............. .. .. . 49
Front and rear ... .. ..... ...... .. .. . 49
Intermittent (windshield wipers) ... ... . 52