cooling AUDI S8 2014 User Guide

24 0 Ch eck ing and filling
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig . 204 Eng ine compartment: cover on the coolant
expa nsion tank
Before you check anything in the engine com­
partment,
a lwa ys re ad and h eed a ll WA RN­
INGS o .A in Working in the engine compart­
ment on page 231 .
Park your vehicle on a level surface.
• Switch
off the ignition .
• Read the engine coolant leve l from the cool­
ant expansion tank
o fig. 204, o page 233.
With a cold engine, the coolant level should
be betwee n the "min" and "max" markings.
When the engine is warm, the level may be slightly above the "max" marking .
The location of the coolant expans ion tank
can be seen in the engine compartment illus ­
tration
o page 233.
To obtain an accurate reading, the engine
must be switched
off.
The expansion tank in your vehicle is equipped
with an e lectric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System
o page 16 wi ll
illuminate unti l you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolant level
from time to time.
Coolant l oss
Coolant loss may indicate a le ak in the cooling
system. In the event of coolant loss, the cool- ing system shou
ld be inspected immediately
by your authorized Audi dea ler . It is not
enough mere ly to add coo lant .
In a
sea le d system, losses can occur on ly if
the boiling point of the coo lant is exceeded as
a res ult of overheating.
A WARNING
-The cooling system is under pressure and
can get very hot. Red uce the risk of scald­
i ng from hot coolant by fo llow ing these
steps.
- Turn
off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escaping flu id and steam by covering the
cap with a large, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect ion while ap­
plying light, 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 engine parts. Under certa in cond i­
tions, the ethylene glycol in engine cool­
ant can catch fire.
0 Note
Do not add any type of radiator leak seal­
ant to your veh icle's engine coolant . Add­
i ng radiator repa ir fluid may adverse ly af­
fect the funct io n and performance of your
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 com­
partment,
alw ay s re ad and h eed all WARN­
IN GS o .A in Working in the engine compart­
ment on page 231.
• Tu rnoff the engi ne.
• Let the eng ine cool down.

Child safety . ... .... .... ... .. .. .. ... 177
Convertible locking retractor . ... .. .. . 187
Guidance f ixtures for lower anchorages 192
Important safety ins tructions for using
child safety seats ......... .. .. .. .. . 180
Important things to know when dr iv ing
with ch ildren .... .. ...... .. .. .. .. . 177
Tet her anchors .............. .... .. 194
Tethe r straps ............ .. .. .. .. . 194
Ch ild safety lock
Rear doors (mechan ica l) . ..... .... ... 41
Rear doors (powe r) ....... .. .. .. .. .. 41
Chi ld safety seat
Unused safety belts on the rear seat . . 182
C hild safety seats .......... .... .. ... 183
B ooste r seats ... .. .... ... .. .. .. ... 185
Convertible c hild seats . ... .. .. .. .. . 184
Convertible locking retractor . . . . . . . . . 187
How do I properly install a child safety
seat in my vehicle? ........ .. .. .. .. . 180
Infant seats . . . . . . . . . . . . . . . . . . . . . . 183
Ins tall ing ............ ...... .... .. 187
I nstal ling a child restraint us ing the
L A TC H system ............ .... .. ... 193
L A TC H sys tem ............ .... .. .. . 193
L ower anchorages ........ .. .. .. .. . 19 1
M ounting and releasing the ancho rage
hook . ..... .. ... .. ..... ... .. .. ... 193
Safety inst ructions . . . . . . . . . . . . . . . . . 180
Clea ning .. .. .. ........... .. .. .. ... 2 16
Climate controls . . . . . . . . . . . . . . . . . . . . . 79
Climate control system Supp lementary heater . . . . . . . . . . . . . . . 82
C lock . .. .. .. ................. .. .. .. 27
C losing
Panoramic sunroof . ....... .. .. .. .. .. 44
Sliding/tilti ng su nroof ........ .... ... 43
Sun shade (panoramic sun roof) . ...... 45
Cold tire inflat ion pressure ... .. .. .. .. . 252
Com ing home ............. .... .. .. .. 48
Compact spare tire ............ .... .. 271
Compartments .... ..... ... .. .. .. .... 75
Compass in the mir ro r ...... .. .. .. .. .. 56
Compliance .. .. ........... .. .. .. ... 295
Consumer Info rmation . . . . . . . . . . 14 3, 29 2
Consumpt ion (fue l) . . . . . . . . . . . . . . . . . . 25
Contact ing N HTSA ......... .. .. .. .. . 143
Inde x 299
Controls
Cleaning . ... .. .... . ... ...... ... .. 218
Convenie nce key . .. ................. . 35
Star ting the engine ............ .. .. . 84
Stopping the eng ine (S TAR T E NGIN E
STOP b utton) . . . . . . . . . . . . . . . . . . . . . . 84
Switching the ignition on .... ... .. .. . 84
U nlocking and loc king vehicle . ... .. .. . 3S
Conve rtib le child sa fe ty seats ....... .. 18 4
Convertib le locking retractor
Activati ng . . . . . . . . . . . . . . . . . . . . . . . . 189
Deact ivati ng .. ... .. ..... .......... 189
U sing to secure a child safety seat l.87, 189
Coolant
refer to Eng ine coolant ......... .. .. 239
Cooler ... .. .. .... ... .. .. ..... ... .. . 76
Cleaning . ... .. .... . ... ...... ... .. 219
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 76
Cooling mode (automat ic cl im ate control) 80
Cruise contro l
Changi ng speed .. .. .. .. ...... .... .. 92
P res ett ing your speed ............. .. 92
Swit ch ing off .. .. .... ........... .. . 92
Swi tching on . .. ...... ........... .. . 91
(upholder .. .. .. .. .... ... .... .... .. . 75
C ur ve lig ht . ... .... .. . .. .. ..... ... .. 110
Cylinder on demand System ...... .. .. . 27
D
Data recorder . . . . . . . . . . . . . . . . . . . . . . 199
Date dis p lay . . . . . . . . . . . . . . . . . . . . . . . . 2 7
Dayt ime run ning lights ........... .. .. . 46
Declarat ion of compliance
Adaptive cruise control . .. .. ... ... .. 295
Audi s ide ass ist .................. . 295
Cell phone package . ............... 295
Co nvenience key .. .... ......... .. .. 295
El ec tronic immob ilizer .......... .... 295
HomeL in k unive rsal remote con trol ... 295
Remote contro l key .. ... .... ... .. .. 2 95
Deco rative pa rts/tr im
Cleaning .. .. .. .. ................. 218
DEF What does this mea n when it appears in
the tr ip odometer display? ........... 27
Defective light bu lb wa rning ... ... .. .. . 22
•
•

When should I adjust the tire pressures? 255
When should I check the tire pressures? . 255
Where are lower anchorages located? .. . 191
Where can I find the tire pressures for my
car? ... ..... .. ................ .... 254
Why safety belts? . . . . . . . . . . . . . . 145, 146
Windows Cleaning/removing ice ..... .. .. .. .. . 218
defrosting .. ............. .... .. .... 81
Windshield Cleaning ... ................ ... .... 53
defrosting . ................. ... .... 81
Windshield washer system .. .. .. .. .. .. 53
Washer fluid level . . . . . . . . . . . . . . . . . . 21
Washer reservoir ............ ... .. . 247
Windshield wipers Cleaning . .. ............. .... .. .... 54
Folding up . . . . . . . . . . . . . . . . . . . . . . . . 54
I ndicator light . . . . . . . . . . . . . . . . . . . . . 22
Replacing windshield wiper blades ... .. 54
Switching on/off . . . . . . . . . . . . . . . . . . . 53
Winter operation Battery . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Car washes . ............. .... .. .. . 216
Cooling system .............. ... ... 239
Defrosting windows .......... ... .. .. 81
Removing ice from windows . ... .. .. . 218
Seat heating ............. .... .. .... 81
Steering wheel heating .... .. .. .. .. .. 82
Tires .. .. .. .... ... .. ... ... .. .. .. . 204
Winter tires . ................. ... ... 263
All-wheel drive .............. ... ... 263
X
Xenon-Lights ................. ... ... 282
Xenon plus headlights ...... .. .. .. .. .. 46
Index 309
•
•