2013 AUDI S6 heating

Engine compartment
Be especially careful when cleaning the en­
gine compartment.
A lw ays s witch off the ign ition befor e clean ­
ing the eng in e
c:> & .
Plenum panel
Remove leaves from the plenum pane l in front
of the windshield under the engine compart­
ment. This prevents the water drain ho les
from becoming blocked, and it prevents de­
bris from entering the veh icle inter ior through
the heating and ventilation ducts .
Corro sion protecti on
The engine compartment and transmission
have been corrosion-protected at the factory.
Good anti-corrosion treatment is very impor ­
tant, particular ly in the winter . If the vehicle
is frequent ly driven on salt treated roads, the
entire engine compartment and plenum panel
should be thoroughly cleaned at the end of
winter and retreated to prevent sa lt damage.
At the same time, the underside of the vehicle
should be washed as we ll.
If the engine compartment is cleaned at any
time with grease removing solut ions
1>, or if
you have the engine washed, the anti-corro­
sion treatment is a lmost always removed as
well.
It is therefore essential to have a long­
lasting co rrosion protection reapp lied to a ll
surfaces, seams, joints and components in the
engine compartment.
A WARNING
Be aware: The engine compa rtment of any
motor vehicle is a potentially hazardous
area.
- Before working in the engine compart­
ment, be s ure to read the in format ion
c:> page 225.
- Before reaching into the front pane l, al­
ways switch off the ignition. Otherwise,
l ) Use only the correct cleaning sol utions. Never use gas­
oline or diesel fuel.
Cleaning and protec tion 219
the windshield wiper system could unin­
tentionally be switched on, possibly
causing personal injury from the moving
wiper linkage.
- Never reach into the area around or
touch the radiator fan. The aux iliary fan
is temperature controlled and can sw itch
on suddenly - even when the ignition is
off.
- Do not wash, wax o r dry the eng ine with
the engine running. Moving or hot parts could injure you.
- Do not clean the underside of the chas­
sis, fenders, wheel covers, or other ha rd
to reach parts without protect ing your
hands and arms. You may cut yourself on
sharp-edged metal parts .
- Always read and heed all WARNINGS and
o ther info rmation
c:> page 208.
•
•

232 Check ing and filling
Engine cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro ­
tects the engine from freezing in the winter .
The cooling system is sealed and generally re­
quires little attention.
The cooling system has been filled at the fac­
tory with a permanent coolant which does not need to be changed. The coolant consists of a
mixture of water and the manufacturer's gly ­
col-based coolant additive Gl3 ant ifreeze
with ant icorros ion add itives (50% for USA
models; 60% for Canad ian models). This mix­
ture both assu res the necessary frost protec­
tion and protects metal components in the
engine's cooling system from corrosion and
scaling. It also raises the boiling point of the
coolant.
Do not reduce the concentration o f the coo l­
ant in the summer by adding plain water .
The
propo rtion of coolant add it iv e mu st be at
l eas t 50 % but not mo re than 6 0%
to main­
tain antifree ze protection and cooling efficien­
cy. If the coolant frost protect ion is too low,
the coolant could freeze and damage the veh i­
cle heating and eng ine cooling system .
For year-round driving, antifree ze is added at
the factory for temperatures down to:
- -31°F(-35°C)USA
- - 40 ° F ( -40 °C) Canada.
A WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARNINGS
c:> &. in Working in the engine
compartment on page 225.
- Before winter sets in, have the coolant
checked to see if the coo lant addit ive in
your vehicle is suffic ient to meet the cli­
mate cond itions. Th is is especially impor­
tant if you live in a region where the w in- ter is extreme
ly cold . If necessary, in ­
crease the proportion of coo lant additive
to 60%.
- When adding coolant additive to your
cooling system, remember:
- We recommend us ing only coolant ad­
d itive Gl2++ or G l3 (check the labe l)
fo r your vehicle. This coolant additive is
ava ilable at a utho rized Aud i dea le rs.
Other types of antifreeze can sign ifi­
cantly reduce corros ion protection. The
res ulting corrosion can cause a loss of
coolant and serious engine damage.
- Do not add any type of radiator leak seal ­
ant to yo ur vehicle's engine coolant .
Add ing radiator repair flu id may adverse­
ly affect the function and performance of
your cooling system and could resu lt in
damage not covered by your New Veh icle
Limited War ranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 1 87 Engin e compar tmen t: cover on t he coo la nt
expansio n ta nk
Before you check anyth ing in the engine com­
partment,
alwa ys read and heed all WARN­
I NGS c:> &. in Working in the engine compart ­
ment on page 225 .
.. Park your vehicle on a level surface .
.. Switch off the ignition.
.. Read the engine coolant level from the
coola nt expansion tank
c:> fig . 187,
c:> fig. 184 . With a cold engine, the coolant
level shou ld be between the "min" and
"max" markings. When the eng ine is wa rm, ..,.

the level may be slightly above the "max"
marking .
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration ¢ page 22 7.
To obtain an accurate reading, the engine must be switched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System ¢page 16will
illuminate until 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 loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized Audi dealer.
It is not
enough merely to add coolant.
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
& WARNING
The cooling system is under pressure and
can get very hot. Reduce the risk of scald­
ing from hot coolant by following these
steps.
- Turn
off the engine and allow it to 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 ap­
plying light, downward pressure on the
top of the cap.
- To avoid being burned, do not spill anti­ freeze or coolant on the exhaust system or hot engine parts . Under certain condi­
tions, the ethylene glycol in engine cool ­
ant can catch fire .
Checking and filling 233
@ Note
Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant. Add­
ing radiator repair fluid may adversely af­
fect the function 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 anything in the engine com ­
partment,
always read and heed all WARN­
INGS ¢ & in Working in the engine compart ­
ment on page 225 .
.,. Turn
off the engine .
.,. let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank ¢ fig .
187 and carefully twist the cap
counter-clockwise ¢&_ .
.,. Add coolant.
.,. Twist the cap on again tightly.
Replacement engine coolant must conform to
exact specifications ¢ page
2 32, Coolant. We
recommend using only coolant additive G12+
+, G13 or in an emergency G12+. Do
not use a
different additive. In an emergency use plain
water until you can get the correct additive
and can restore the correct ratio. This should
be done as soon as possible.
If you have lost a considerable amount of
coolant, then you should add cold antifreeze
and cold water only when the engine is cold.
Always use new engine coolant when refilling.
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.
A WARNING
- The cooling system is under pressure and
can get very hot. Reduce the risk of
II-
•
•

272 Fuses and bulbs
Fuse panel @ (brown)
No. Equ ipment Amps
Climate control 10
Climate control system blower 40
3
D iagnost ic connec tor 10
4 Electrical ignition lock 5
5
Power s teer ing column adju st-
ment
5
6 Steering column switch module 10
7
Power steering column ad just -
ment
25
8 Light switch 5
Luggage compartment fuse assignment
F
ig . 2 13 Lu ggage compar tment: fuse pa nel w ith plas­
t ic bracket
Fu se panel A (black )
No. Equipment Amps
Electromechanical pa rking brake 30
Electraomechanical parking brake 30
6
Front door (front passenge r's
30 s ide)
7 Rear exterior lighting 30
Rea r su n shade, closing aid, lug-
8 gage
comp artment lock, con-
20
venience key, S TA RT E NGIN E
STOP, fuel fi ller door
9 Power seat adjustment 15
1 0
Pa rking system 5
11
Rear seat heating 30
Fuse panel @ (red )
No. Equipment Amps
1 Left belt tensioner 2 5
2 25
3
Socke t 20
4
Socket 20
5
Ele ctrome chanic al p arking b ra ke 5
6 adaptive air suspension 15
7
Rear door (fron t passenger's
30 side)
8 Rear exterior lighting
30
9
L
u ggage compartment lid con-
30 trol mod ule
Telephone
5
11
So und amplif ier 30
12
Rear spoiler (Sportback) 20
Fuse panel © (brown)
No . Equipment Amps
1 Radio receiver, Sound amplifier/ 3 0/ 20
MMI unit/dr ives
Tank lea k detec tion sys tem
5
4 AEM co ntrol module/battery 10/15
mo dule
Battery fan
35
Rad io rec eiver 7,5
7 ,5
9
Automatic dimm ing in terior 5/15
rea rv iew mirror /ba ttery m od ule
10 Parking system 5
Fuse panel @ (green)
No. Equipment Amps
1 Audi pre sense 5
2
Electromechanical parking brake 5
3 ad a pt ive air suspen sio n 5
4
Automatic transmission 7,5
5
Parki ng sys tem 5
6 Rear Seat Entertainment 5
7
Start -Stop-System 5
8 Audi side assist 5

294 Index
------------------------------------
Data .... ....... ......... ... .... . 282
Start-Stop-System . . . . . . . . . . . . . . . . . . 76
start ing .. .. ................ ..... .. 71
Startingwithjumpercables .. .. ..... 274
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Engine compartment ........ .... ... . 227
C losing the hood .......... ... .... . 226
Opening the hood ................. 225
Safety instructions ........ .. .. .... . 225
Working in the engine compartment .. 225
Engine coolant .................... . 232
Adding coolant ............ ... .... . 233
Checking the engine coolant level .... . 232
Expansion tank ........... .. .. .. .. . 232
Malfunction symbol ....... .. .. .... .. 16
Radiator fan .............. ... .. .. . 234
Temperature gauge ........ ..... .. .. 11
Engine oil ... ................ ..... . 227
Adding .. .... ........... .... .... . 230
Additives . .. ............. .. .. .. ... 230
Changing .... ... .... .... .. .. .. .. . 231
Check ing the engine oil level .. .. .. .. . 230
I ndications and cond it ions requ iring ex-
tra checking .. ........... .. .. .... . 230
I ndicator light ........... .. .. .. .. .. 18
O il consumption .......... .... .... . 229
Oil grades . ................. ..... . 227
Oil level symbol .................... 21
Pressure malfunction ....... ... .. .. .. 17
Recommended oil check intervals ..... 230
Sensor defective . . . . . . . . . . . . . . . . . . . . 21
Specification and viscosity .. .. .. .. .. . 227
Engine sound .............. ... .... .. 98
E ng ine speed limitation ....... .. .. .. . . 21
Engine start-stop mode
refer to Star t-Stop-System ... .. .. .. .. 78
Engine start system (indicator lights) . ... 18
Environment Break-in period ......... .. .. .. .. .. . 199
Cata lytic converter ........ .. .. .. .. . 200
Disposing of your vehicle battery . ... . 239
Driving at high speeds .............. 202
Driving to minimize pollution and noise 201
Fuel . .. .. ............... .. .. .... . 222
Fuel economy ............ .... .... . 201
Leaks under your vehicle ... .. .. .. .. . 225
Lett ing the vehicle stand and warm up . 202
Proper disposal of drained brake fluid . 235 Proper disposal of d
rained engine cool-
ant ..... ..... .. .. .............. . 233
Proper disposal of drained eng ine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 230,231
Recycling used engine oil ........ .... 230
Unleaded fuel .. .. ................ . 220
What should I do with an old battery? . 239
ESC (Electronic Stabilization Control) Warning/indicator lights ........ .. .. . 19
Event Data Recorder (EDR) ........ .. .. 192
Exhaust tail pipes .. .......... ...... . 214
Expansion tank .... ................ . 232
Exterior lighting . ... ............ .. .. . 41
Exterior mirrors Adjusting ..... .. .. ........ ...... .. 48
Dimming .. .. .. .. .. ..... ...... .. .. . 48
Heating ...... ... .. .............. .. 48
Exterior temperature display ...... .. .. . 23
F
Fastening
Booster seats . . . . . . . . . . . . . . . . . . . . . 180
Convertible child safety seats . . . . . . . . 178
Infant seats ... .. ............. .... 177
Floor mats . ..... .. ................ . 131
Foot pedals ..... .. ..... ........... . 131
For the sake of the environment Gasoline fumes and the environment .. 222
Reducing engine noise by early upshift-
ing ...... .... ... .. ................ 11
Refueling ... .. .. ....... ...... .. .. 222
Sav ing fuel by early upsh ifting . .. .. .. . 11
Four- zone automatic climate control . .. . 67
Front airbags
Description .... .. ................ . 149
How they work ... ................ . 155
Frontal coll is ions and the laws of phys ics 137
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 50
Adjusting ... .. .. ....... ...... .. .. 128
Child restraints in the front seat ...... 147
Fuel Additives .. .... .. ............. .... 220
Blended gasoline .............. .... 220
Current consumption .............. .. 24
Economy messages (efficiency program) 26
Fuel filler flap emergency release ... .. 223

Fuel filler neck ................ .... 221
Fuel gauge ................. ... .... 12
Gasoline ... ................ ... .. . 220
Gasoline additives ........ .. .. .. .. . 221
Low fuel level symbol . . . . . . . . . . . . . . . 21
Octane rating ............... ... ... 220
Recommendation .... ..... .. .. .. .. . 220
Refuelling ............ ...... .... .. 222
Reserve .. .. ............. .. .. .. .. .. 12
Tank capacity . . . . . . . . . . . . . . . . . 12, 282
Fuses Assignment ..... .. ...... .. .. .. .. . 270
Replacing .. ................ ... ... 270
G
Garage door opener (Homelink ®) . ... .. 124
Garment hooks . . . . . . . . . . . . . . . . . . . . . . 58
Gas discharge lamps ........ .. .. .. .. . 273
Gauges Engine coolant temperature .. .. .. ... . 11
Fuel gauge . .. .............. ... ... . 12
Speedometer . ........ .... ... ... ... 27
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 12
Trip odometer ........... .. .. .. .. .. 27
General illustration . ....... .. .. .. .. ... 8
Generator (warning/indicator lights) . ... 17
Glossary of tire and loading terminology 241
Glove compartment (cooled) . .. .. .. .. .. 58
Gross Vehicle Weight Rating (GVWR) .. . 280
H
Head -up Display . . . . . . . . . . . . . . . . . . . . . 28
Headlights Cleaning system . .......... ... ... ... 46
Defective . . . . . . . . . . . . . . . . . . . . . . . . . 22
Headlight range control . . . . . . . . . 22, 41
Washer reservoir ......... .. .. .. .. . 239
Head restraints . . . . . . . . . . . . . . . . . 53, 130
Adjusting .. .. ... .. ... ... .. .. .. .. . 130
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 53
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . 53
Removing .. .... ......... .... .. .. .. 53
Heated exterior mirrors . ...... ... .. .. .. .. .. 48
rear window (automatic climate control) 68
rear window (climate control) . .. ... ... 66
Index 295
seats (automatic climate control) ...... 68
seats (climate control) . . . . . . . . . . . . . . . 66
windshield washer spray nozzles ..... . 46
Heating .. .. .. .. .. .... ........... .. . 64
Heavy clothing and safety belts .. .. .. .. 139
High beam ... ..... .. ................ 43
High voltage warning label .......... . 280
Hill descent control ................. 108
Homelink ® universal remote control . .. 124
Hood (release lever) .. .. .. ...... .... . 225
Horn ....... ... .... .. .............. . 8
How are child restraint system anchors re-
lated to child safety .... ......... .. .. 185
How many airbags does my vehicle have? 153
How often should I check my tire pres-
sures? ............................ 247
How safety belt pretensioners work .. .. 143
Hydroplaning . .. .. .. .. ........... .. 251
I
Immobilizer .. .. ...... ............. . 27
Important things to do before driving .. 126
Improperly worn safety belts .......... 142
Indicator lights
refer to Warning/indicator lights ... .. . 12
Infant seats .. .. ...... ........... .. 177
Installing child safety seats Safety belts . . . . . . . . . . . . . . . . . . . . . . 182
Installing the upper tether strap on the
anchorage .. .... .. .. . .............. 188
Instruments Adjusting the lighting ............... 44
Instruments and controls General illustration . . . . . . . . . . . . . . . . . . 8
Instrument cluster . . . . . . . . . . . . . . . . . . 11
Interior lighting Ambience lighting .. .. .. ...... .... .. 44
Front and rear ... .. .. .. ...... .... .. 44
Intermittent (windshield wipers) .... .. . 46
J
Jack ........ ... .... ............... 262
Jump-starting . .. .... .. .. ...... .... . 274
Jumper cables . .. .. ................. 275
•
•

298 Index
R
Radiator fan .. .. .. ..... ... .. .. .... . 234
Radio clock .. ... .... .... .. ... ... .. .. 27
Ra in/lig ht sensor
Headlig hts ... ........... .. .. .... .. 41
Intermittent (windshield wipers) .. .... 46
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Range~uel level) ..... ... .. .. .. .... .. 24
Read ing lights .. ........... .. .. .... .. 44
Rear fog lights . ........... .... .... .. 41
Rear lid Emergency release ... ... .. .. .. .... .. 38
Escape hand le . ..... ... .. .. .. .... . 261
Opening and clos ing ........ .. .... .. 37
Rear light Defective . . . . . . . . . . . . . . . . . . . . . . . . . 22
R ear v iew camera
ref er to Parking systems . . . . . . . 113, 1 14
Rear view mir ror ............. .. .... .. 48
Rear w indow he ati ng (a utoma tic climate
con trol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
R ear w indow heating (climate control) . . . 66
Recirculation mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Re circulation mode (climate control) . . . . 65
Refuelling . .. ... ... .......... ... .. . 222
Remote control Garage door opener (HomeL ink ®) .. ... 124
Unlock ing and locking ..... .... .... .. 34
Remote rear lid release ... .. .. .... .. . . 37
Repai r manua ls .. .. .. ... ... .. .. .. .. . 285
Repairs Airbag system ........... .. .. .. .. . 161
Replacing Fu ses . ..... ... . ...... ... .. .. .... . 270
L ig ht bulbs .... .. ..... ... .. .. .... . 273
Tires and wheels ......... .. .. ..... 252
W indshield wiper blades ..... .. .... .. 47
Report ing Safety Defects .... .. .. .. .. . 134
R eset b utton . ................ ... ... . 27
Retractor ..... .. .. ..... ... .. .. .... . 139
Ri ms ( clean ing) ............ .. .. .. .. . 213
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Loading .. .. ... .... ...... .. .. .. .. .. 60
Roof weig ht . . . . . . . . . . . . . . . . . . . . . . . 60
s
SAFE .. .. .. .... .. ... .. .. ..... ... .. . 27
Safe driv ing habits ...... .. ... ..... .. 126
Safety be lt pos ition . . . . . . . . . . . . . . . . . 140
Safety be lt height adjustment ... .. .. 142
Safety be lts worn by pregnant women . 141
S afety be lt pretensioner . . . . . . . . . . . . . . 143
Se rvice an d disposa l .... .... ... .. .. 143
Safety be lt p retensioners
Pr e sense . .. .. .. .. ........... .. .. 190
Safety be lts . . . . . . . . . . . . . . . . . . . . . . . . 139
clean ing .. ... ... ................ . 218
Danger to passengers who do not wear a
safety be lt .. .. .. ............. .. .. 13 7
Fasten ing . .... .. ................. 139
He ig ht adj ustmen t .. ........... .. .. 142
Improperly wo rn . . . . . . . . . . . . . . . . . . 142
Not worn ..... .. .. .... .... ... .. .. 137
Safety be lt pos ition . . . . . . . . . . . . . . . . 140
Safety instr uctions ............... .. 139
Securing child safety seats .... .. .... 182
Spec ial considerations for pregnant
women ...... ... ................ . 141
U nfastening . .. .. ..... ....... ... .. 141
W arning/ind icator light ......... .... 136
War ning light . . . . . . . . . . . . . . . . . . . . . . 17
Why YOU MU ST wea r them ...... .. .. 136
Worn p roperly ... ... .. ..... .... . .. 138
Safety be lt te nsione r
drive select .. .. .. ............. .. ... 98
Safety be lt warning light ......... .. .. 136
Sa fety comp liance s tic ker ... ... .. .. .. 28 0
Safety equ ipme nt .. ... ....... ...... . 126
Safety features for occ upant restraint and
protection .. ....................... 126
Saf ety gu idelines
Seat adjustmen t . . . . . . . . . . . . . . . . . . . . 50
Safety i nstr uctions
En gine compartment ........... .. .. 22 5
f o r side curtain airbags ......... .... 169
f or using child safety seats ...... .... 175
f or using sa fe ty belts . .. ..... ... .. .. 139
Monito ring the Advance d Airbag Sys-
tem . ... .. .. .. .. .. .... . ..... ... .. 160
Safety sys tems
W arning/ind ic a tor lights ...... .. .. .. . 19

302 Index
Seat heating (automatic clima te control) 6 8
Seat heating (climate contro l) . . . . . . . . 66
Steer ing whee l heating . ... .. .. .... . . 69
Tires .. .. ............... .. .. .... . 196
W indows .... ........... .... .... . 213
W inte r tir es . .... . ...... ... .. .. .... . 2S5
All-wheel drive . .. ..... ... .. .. .... . 255
X
Xenon -Lights .. .. ... .... ... .. .. . 4 1,273