2008 AUDI S6 coolant reservoir

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•
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced .
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage => &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake .
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment .
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm . The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open flames . Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever to "P"
(Park). .,
Vehicle care
I t •

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0 Not e
• Coolant pollutes the environment and cou ld 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 added, the correct ratio
between water and antifreeze ~
page 303 must be restored as soon
as possible .
ci> For the sake of the environment
Dra ined coolant should not be reused . Always dispose of used
coolant whi le observing all environmental regulations. •
Radiator fan
The radiator fan switches on automatically by itself.
The rad iator fan is driven by the eng ine v ia the V-be lt . The v iscous
clutch regulates the speed of the fan according to the tempera ture
of the coo lant .
An auxiliary electric radiator fan * swi tches on and off depending on
coo lant temperature and other vehicle operating conditions.
After you switch the engine off, the auxiliary fan can continue running for up to 10 minut es -even with th e igni tion o ff. It can even
switch o n again later by itself~ & , if
• the temperature of the engine coo lant rises due to the heat
bui ld -up from the engine in the engine compartment, o r
• the engine compartment heats up because the vehic le is parked
in intense sun light.
& WARNING
• To reduce the ri sk of per sonal injury never tou ch the radiator
f a n.
& W AR N ING (continu ed )
• The auxiliary e le ctri c fan i s temperature controlled and can
s w itch on suddenly even when the engine is not running .
• The auxiliary radiator fan swit ches on automatically when the
engine coolant reache s a ce rtain temperature and will con tinue to
run until the coolant t emperatur e drop s. •
Brake fluid
Checking brake fluid level
Th e brake fluid level c an be checked with a quick glance.
Fig . 23 6 En gin e
co mp art m ent : B ra ke
fl uid re servoir
Befo re yo u c heck anything in th e en gin e compar tme nt,
always read and heed all WARNINGS~ & in "Working in
the eng ine compartment" on
page 297 .
Rea d the brake fl uid level from the bra ke fluid reservoir
~ fig . 236. T he b rake fluid leve l must be betwee n the
" M IN " and "MAX" markings.
The brake fluid reservoir is located at the rear parti tion of the engine
compartment on the left side~
page 298. .,_

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Proper disposal of drained engine oil 302
Recycling used engine oil ..... ..... 302
Un leaded fuel ..... ....... .... ... . 291
What should I do with an old battery?
311
EPC
See Electronic power control . .... ... 19
ESP
See Electronic stabilization program
(ESP) ..... ... .. .... .... ...... ... 19
Event Data Recorder (EDR) ... .... ..... 258
Expansion tank ...... ....... ........ 304
Exterior lighting in the mirror housing ... 73
Eyeglasses compartment ............. 108
F
Fan
Radiator .............. .......... 306
Fastening eyelets ...... .... .......... 97
Flat tire Changing ... ... ... .. .... ...... .. 338
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . 198
Fog lights .... .... .... ... .. .... .... .. 72
Fo lding master key with remote contro l . 48
Foot pedals ...... .. .... .... ..... ... 198
For the sake of the environment Gasoline fumes and the environment 293
Letting you r engine warm up ...... . 125
Reducing engine noise by early
upshifting .. ...... ..... .... ... .. 13
Refuel ing .... .... ....... .... .... 293
Controls and equip­
ment Safety first
Saving
fuel by early upshifting .... .. 13
Usingtherearwindowdefogger .. .. 117
Front airbags
Description ......... .... .... .... . 216
How they work .... ........ ....... 221
Front arm rest adjusting . ...... .... .... ... .... ... 96
Storage compartment ... .... ..... .. 96
Front ashtray .... .... .... ........ ... 104
Front fog lights ..... ........ .... .... . 72
Front seats .. ............ .... ....... . 87
Adjusting ... ....... .... .... .... . 195
Child restraints in the front seat ... . 214
Fronta l collisions and the laws of physics
203
Fuel Additives ... .. ...... .... ..... .... 291
Blended gasoline .... ....... .... .. 291
Consumption ....... .... .... .... .. 40
Fi ller neck ......... .. ... .... .... . 292
Fuel gauge ... .. .... .... ...... .... 15
Gasoline .. .... ... .... .... .... ... 291
Gasoline additives ................ 292
Low fuel level .............. .... 15, 36
Octane rating .................... 291
Recommendation ....... ... ... ... 291
Refuel ling .............. ...... ... 293
Reserve .......................... 15
Tank capacity .... .... ... .... .... . 363
Un locking the fue l f iller flap by hand 295
Fuse arrangement ............. ...... 345 G
Garage door opener (HomeLink®) . .... . 186
Gas discharge lamps . .... ........... . 349
Gauges Engine coolant temperature .. .. .. . .. 13
Fuel gauge ..... .... .. .. . ... ...... 15
Speedometer ... .... ... .. .... ..... 15
Tachometer . .... .... .... .... ...... 14
Trip odometer ... .. .... .... ... .. .. . 15
General illustration Instruments and controls ... .. .... .. 11
Generator Warning/indicator lights ............ 19
G lossary of tire and loading terminology .. .
314
G love compartment ......... .... .... 107
cd changer ... .... .... .... .... ... 107
Valet key function .... .... .... ... .. 51
G love compartment -emergency unlocking
108
Gross Vehicle Weight Rating (GVWR) ... 361
H
Head restraints ... .... ..... ... ... ... 197
Adjusting .. .... .... ... .... .... ... 197
Front seats ... .... .... ... .... ..... 93
Installation and removal ............ 94
Rear seats .... .... .... .... ..... 94, 95
Headlight washer reservoir .. .... .... . 312
Vehicle operation Vehicle care Do-it-yourself service Technical data

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Unlocking
Power locking switch . . . . . . . . . . . . . . 56
Rear lid/trunk lid .. .... .... .... .... 58
Remote control key . . . . . . . . . . . . . . . . 54
Using the key .. .... ....... ........ 55
V
Valet key function
Activating and deactivating .. ..... .. 51
Vanity mirror ...... .. .......... ...... 76
Vehic le electrical system . . . . . . . . . . . . . . 19
Vehicle Identification Number (VIN) .... 360
Vehicle jack ...... .... .......... 336, 34 1
Vehic le literature ..................... 5
Vehicle-care products . . . . . . . . . . . . . . . 278
w
Warning lights . . . . . . . . . . . . . . . . . . . . . . 17
Warning/indicator lights ... .. .... .... . 13
Adaptive Air Suspension . ........ .. 21
Adaptive Cruise Control ... .... .... 143
Airbag system .................... 20
Anti -lock brake system (ABS) . . . . . . . . 22
Brake system . . . . . . . . . . . . . . . . . . . . . 23
Cruise control . . . . . . . . . . . . . . . . . . . . 22
Electromechanical parking brake .... 23
Electronic power control ........... 19
Electronic stabilization program (ESP) 19
Generator . . . . . . . . . . . . . . . . . . . . . . . . 19
H igh beam . . . . . . . . . . . . . . . . . . . . . . . 22 T
ire pressure monitoring system .. .. 20
Turn signals ... ...... ...... ....... 20
Warranty coverages ...... .... .... ... 365
Washer reservoir .. ..... .. ...... ..... 312
Washing .. ........ ........... .... .. 278
Automatic car wash .............. 279
by hand ........................ 279
General information .............. 278
with a power washer ... .... .... ... 280
Waxing ... ........ ... .... .... .... .. 281
Wear indicato r .... .... ... .... .... ... 323
Weatherstrips ..................... .
Weights ....... .. .... ...... ... .. .. . 283
361
What happens if you wear your safety belt too
loose? .. ... .. .... .... .... ...... 207
What happens to unbelted occupants? . 204
What impairs driving safety? ......... . 193
What should I do after changing a wheel?
320
What should I do after replacing wheels?
320
Wheel bolts Torqu e ...... ....... ..... ..... .. 331
Wheels . ......... ... ... .. .... ...... 313
Cas t alloy ... ... ... .... .... .... .. 283
Checking tire pressure ...... ...... 319
Cold tire inflation pressure ...... .. 317
General notes .. ... .... .... .... .. 313
Glossary of tire and loading terminology.
314
New tir es and wheels . .... ... .. ... 325
Tires and vehicle load limits .. ..... 321
Malfunction Indicator Lamp (MIU . ... 20
Safety belt ..... .. .... .... ...... ..
21 When must a safety belt be
replaced? .. 205 When
must the airbag system be inspected?
223
When should I adjust the tire pressures?
320
When should I check the tire pressures? 320
Where can I find the tire pressures for my
car? ... .. .... .... .... ... .... ... 319
Why safety belts? ...... ...... ... 202, 203
Windows Cleaning .... ...... .... ..... .. ... 282
Convenience close/open feature ... .. 65
Defogging .... ... .... .... .... ... 116
Defrosting . . . . . . . . . . . . . . . . . . . . . . 116
Rapid defrosting/defogging ........ 118
Windshield washer fluid Low level .......... .... ... .... .... 36
Windshield wipers Faulty ............ ... .... .... .... 38
Inte rmittent wiping ......... ....... 78
One -tap wiping .. ...... ...... .... . 78
Rain sensor . ...... .... ... .... .... 78
Service position . ...... .... ........ 80
Washer reservoir ....... ..... .... . 312
Winter operation Battery . . . . . . . . . . . . . . . . . . . . . . . . . 307
Coolant system ............... ... 303
Steering wheel heating ...... .... .. 115
Tir es ...... .... ....... .... ...... 264
Windows ...... .... .... ..... .. ... 282
Winter tires ... .... ....... .... .... .. 329
All -wheel drive ... .. .... .... .... .. 329