2013 AUDI S6 radiator

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-
•
•

234 Checking 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 p ress ure on
the top of the cap .
- To avo id being burned, do not sp ill 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, on ly water can be
added, the correct ratio between water
and antifreeze
c::> page 232 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
An auxiliary e lectr ic radiator fan switches on
and off depending on coolant temperature
and other vehicle operating cond itions. After you switch the engine off, the aux
iliary
fan can cont inue running for up to 10 minutes
- even w it h the ignition off. It can even switc h
on again later by itself
c::> .&. , if
- the temperatu re of the engine coo lant rises
due to the heat build-up from the engine in
the engine compartment, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
A WARNING
-- To reduce the risk of persona l injury nev-
er touch the radiator fan.
- The a uxiliary electric fan is temperat ure
contro lled and can sw itch on suddenly
even when the engine is not running.
- The auxiliary radiator fan switches on a u­
tomatically when the engine coo lant
reaches a certain temperature and will
continue to run until the coolant temper­
ature drops .
Brake fluid
Checking brake fluid level
Fig. 1 88 En gin e compa rtme nt: cove r on t he brake fluid
reservoi r
Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS c:> A in Working in the engine compart­
ment on page 225.
.,. Read the brake fluid level from the brake
fluid reservoir
c::> fig. 188, c:> fig . 184. The
brake fluid level must be between the "MIN"
and "MAX" markings.
IJ>

28 6 Con sum er Inf ormation
comp lexity of today's automobi les, have
steadi ly reduced the scope of maintenance
and repairs which can be carried out by vehicle
owners.
Also, s afety an d e nvir onm ent al con­
cerns place very strict limits on the nature of repairs and adjustments to engine and trans ­
miss ion pa rts which an owner can perform .
Maintenance, adjustments and repa irs usua lly
require special tools, testing devices and oth­
er equipment avai lab le to specially trained
workshop personnel in order to assure proper
performance, reliab ility and safety of the vehi­
cle and its many systems .
Improper ma intenance, adjustments and re ­
pa irs can impair the operation and reliab ility
of your vehicle and even void your vehicle war­ ranty. Therefo re , proof of servici ng in accord­
ance w it h the ma intenance sched ule may be a
condition for upholding a possible warranty
claim made within the warran ty period.
Above all, operational safety can be adve rsely
affected, creating unnecessary risks for you
and your passengers.
If in doubt about any serv icing, have it done
by your author ized Audi dealer or any other
p roperly equipped and qualified workshop .
We strong ly urge you to give your authorized
Audi dealer the opportunity to perform all
schedu led maintenance and necessary repairs .
Your dea ler has the facilities, or iginal parts
and tra ined spec ialists to keep your vehicle
running properly .
Performing lim it e d m aint en anc e y ourself
The fo llowing pages describe a limited num­
ber of procedures which can be performed on
you r vehicle with ordinary too ls, shou ld the
need arise and trained personnel be unavaila­
ble. Before performing any of these proce­
dures, always thoroughly read all of the app li­
cable text and ca refully follow the instruc­
tions given. Always rigorously obse rve the
WARNINGS p rovided .
Before you ch eck anything in th e engin e
compartme nt, alway s read an d heed all WARNINGS
¢ & a
nd ¢ & in Working in the
engine comportment on page 225 .
A WARNING
--Serious personal in jury may occur as a re-
sult of improperly performed mainte­ nance, adjustments or repa irs.
- Always be extremely careful when work­
ing on the vehicle. Always follow com­
monly accepted safety pract ices and gen­
eral common sense. Never r isk personal
in jur y.
- Do not attempt any of the maintenance,
checks or repairs descr ibed o n the fol­
lowing pages if you are not fu lly fam iliar
with these or other procedures with re­ spect to the vehi cle, or are uncerta in how
to proceed .
- Do not do any work withou t the proper
too ls and equipment . Have the necessary
work done by your authorized A udi deal ­
er or anothe r properly equipped and
qualified workshop.
- The engine compar tment o f any motor
vehicle is a potentially hazardous area. Never reach into the area around or
touch the rad iator fan. It is temperature
control led and can sw itch on suddenly -
even when the engine is off . The radiator
fan switches on automatically when the
coo lant reaches a ce rtain temperature
and will cont inue to ru n until the coo lant
tempera ture drops.
- Always sw itch off the ignition before any­
one gets under the vehicle.
- Always support your veh icle with safety
s tands if it is necessary to work under­
neath the vehicle. The j ack s upp lied with
the vehicle is not adequate for this pur­
pose and cou ld co llapse causing serio us
pe rsonal injury .
- If you must work underneath the vehicle
with the wheels on the ground, a lways
make sure the vehicle is on leve l ground,
that the wheels are a lways secure ly
blocked and that t he engine cannot be
started .

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

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