cooling AUDI A6 2016 User Guide

• Park your vehicle on a level surface.
• Switch
off the ignition.
• Read the engine coolant level from the coolant
expansion tank¢
fig. 189, ¢ page 218,
fig. 186.
With a cold engine, the coolant level
should be between the "min" and "max" mark­
i ngs . When the engine is warm, the level may
be s light ly above the "max " marking.
The location of the coolant expans ion tank can be
seen in the engine compartment illustrat ion
¢pag e 218.
To obtain an accurate reading, the engine must
be sw itched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coo lant level is too low, the warning
light in the Auto-Check System
c:> page 15 wi ll il­
luminate until you add coolant and the level has
been restored to normal. Even though there is an
e lectric coolant level sensor, we still recommend
you check the coolant level from t ime to t ime.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cooling
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 coo lant is exceeded as a re­
sult of overheat ing.
A WARNING
The cooling system is under pressure and can
get very hot . Reduce the risk of scalding from
hot coolant by following these steps.
- Turn off the eng ine and allow it to cool
down.
- Protect your face, hands and arms from es­
caping 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 applying
light, downward pressure on the top of the
cap.
Checking and Filling
-To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system or
hot engine parts. Under certain cond itions,
the ethylene glycol in engi ne coolant can
catch fire.
(D Note
Do not add any type of radiator leak sealant
to your vehicle's engine coolant. Add ing radia­
tor repair fluid may adversely affect the func­
tion 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 compart­
ment,
always read and heed all WARNINGS
¢.&. in Working in the engine compartment on
page 216.
• Requ irement: There must be a residual amount
of coolant in the expansion tank
c:> (D .
•Turnoff the engine .
• Let the engine cool down.
• Place a thick rag over the coolant expans ion
tank
c:>p age 222 , fig. 189 and carefully twist
the cap counter-clockwise
c:> _& .
• Add coo lant mixed in the correct ratio
c:> page 222, Coolant up to the MAX marking .
• Make sure that the fluid level remains stable.
Add more coolant if necessary.
• Twist the cap on again
tightly.
Replacement engine coolant must conform to ex ­
act specifications
c> page 222, Coolant.
We recommend using only coolant additive Gl2+
+ , Gl3
or in an emergency Gl2+. Do not use a
different additive. In an emergency use plain wa­
ter 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 coo l­
ant, then you should add cold antifreeze and cold
water only when the engine is co ld.
Always use
new engine coolant when refi lling.
223

Check ing and F illing
Do not fill coolant above the "MAX" mark. Excess
coo lant wi ll be forced out through the pressure
relief valve in the cap when the eng ine becomes
hot.
A WARNING
- The cooling system is under pressure and
can get very hot . Reduce the risk of scald ing
from hot coolant by followi ng these steps.
- Tu rn off the engine and allow it to coo l
down.
- P rotect your face, h ands and arms from
escaping f lu id and steam by cover ing the
cap with a large, thick rag.
- Tu rn the cap slowly and very carefully in a
co unter -clockw ise direction while applying
light, downward p ressure on the top of
the cap.
- To avoid being bu rned, do not spill anti­
freeze or coolant on the exhaust system or
hot engine parts. Under certa in condi­
tions, the ethylene glycol in eng ine cool­
a nt can catch fire.
- Antifreeze is poisonous. A lways store anti­
freeze in its original container and well out
of the reach of children .
- If you dra in the coolant, it must be ca ught
and sa fely stored in a proper conta iner
clearly mar ked "poison".
(D Note
- Do not add coolant if the expansion tank is
empty . A ir cou ld enter the cooling system
a nd damage the eng ine. If this is the case ,
do no t continue dr iving. Seek professional
ass istance .
- Coolant pollutes t he e nvironment a nd could
cause an eng ine fire . Excess coolan t will be
fo rced o ut through th e pressure relief valve
i n the c ap whe n the eng ine be comes hot.
- If, in an emergency, o nly wate r can be add­
ed, the co rrect ratio between wate r and an­
ti fr ee ze ~
page 222 mu st be resto red a s
soon as possib le.
224
-
® For the sake of the environment
D raine d coolant should not be re use d. Always
d ispose of used coolant while observing a ll
environmental regulations.
Radiator fan
The radiator fan switches on automatically by it­
self
An a uxiliary e lectric ra diator fan switches on and
off depending on coo lant temperature and other
vehicle ope rating conditions .
A ft er yo u sw itc h t he engi ne off, the a uxi liary fan
can con tinue running for up to 10 m inutes -even
with t he ignitio n off .
It can even switch on again
l ater by itself~& . if
- t he tempera ture o f the engine coolan t rises d ue
to the heat build -up from the engine in the en­
gine compa rtment, or
- t he engine compar tment heats up beca use the
vehicle is pa rked in intense s unlight.
A WARNING
- To red uce the r is k of personal injury never
to uch the radiator fan .
- The a uxiliary e lectric fan is temperat ure
controlled and can switch on s uddenly even
when the engine is not running.
-
- The a uxiliary radiator fan switches on auto­
mat ically when the eng ine coolant reaches a
certain temperature and will continue to run
until the coo lant temperature d rops.

Checking Engine coolant leve l. . . . . . . . . . . . . . . . . .
222
Chi ld rest raints
Danger of usin g c hild rest raints in the front
se at. .. .. .. .. ............. .. .. .... .
143
Where can I ge t addi tional in fo rmat ion
a bout child restraints and their use? . . . .
183
Chi ld rest raint system ancho rs . . . . . . . . . . 179
Ch ild safety . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Important safety instructions for using chi ld
safety seats . . . . . . . . . . . . . . . . . . . . . . . .
169
Important things to know when driv ing with
ch ild ren . . . . . . . . . . . . . . . . . . . . . . . . . . .
166
Tether anchors . . . . . . . . . . . . . . . . . . . . . . 18 2
Tether st raps . . . . . . . . . . . . . . . . . . . . . . . 18 2
Chi ld safety lock
Rear doo rs, windows in the rea r . . . . . . . . .
39
Ch ild safety seats
Booster seats . . . . . . . . . . . . . . . . . . . . . . .
17 5
Convertible c hild seats . . . . . . . . . . . . . . .
173
Convertible locking retractor . . . . . . . . . . 178
H ow do I properly i nstall a child safety seat
. h' l 7 169 in myve 1c e ......... .............. .
Inf ant sea ts . ................. ... .. . 17 2
Ins tall ing a chi ld restra in t usi ng the LA TC H
sys tem . . . . . . . . . . . . . . . . . . . . . . . . . . . .
181
LATCH system . . . . . . . . . . . . . . . . . . . . . . 181
Lowe r ancho rages . . . . . . . . . . . . . . . . . . . 180
Mounting and releasing the anchorage
hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
181
Safety instructions . . . . . . . . . . . . . . . . . . . 169
Unused safety belts on the rear seat . . . . 171
C hil d seats . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Secur ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
C igarette lighter . . . . . . . . . . . . . . . . . . . . . . . 59
C lea ning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
C leaning/ removing ice from wi ndows . . . . . 205
Clea ning Alcanta ra . . . . . . . . . . . . . . . . . . . . 206
Cleaning artificia l leather . . . . . . . . . . . . . . . 206
Clea ning ca rbon parts . . . . . . . . . . . . . 20 5, 206
C lea ning contro ls . . . . . . . . . . . . . . . . . . . . . 205
C leaning decorative parts and trim . . . 20 4, 205
Cle anin g displays . . . . . . . . . . . . . . . . . . . . . 205
C lea ning exhaust tail pipes . . . . . . . . . . . . . 204
C lea ning plastic parts . . . . . . . . . . . . . . . . . . 205
Clea ning rims . . . . . . . . . . . . . . . . . . . . . . . . 204
C lean ing textiles . . . . . . . . . . . . . . . . . . . . . . 206
Index
Climate contro l system . . . . . . . . . . . . . . . . . 6 7
Closing
Sunr oof. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41
W indows . .. .. .. .. ............. .. .. . 40
Coming home . . . . . . . . . . . . . . . . . . . . . . . . . 46
Compact spare t ire . . . . . . . . . . . . . . . . . . . . 252
Compartments . . . . . . . . . . . . . . . . . . . . . . . . 60
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 276
C ons umer i nfor mat ion . . . . . . . . . . . . . . . . . 2 73
Cons umer Information . . . . . . . . . . . . . . . . . 132
Cons umption (fuel) . . . . . . . . . . . . . . . . . . . . 24
Contac ting NHTSA . . . . . . . . . . . . . . . . . . . . 132
Convenience key . . . . . . . . . . . . . . . . . . . . . . . 34
Start ing the engine (S TART ENGINE STOP
button) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
74
Stopping the eng ine (STAR T ENG INE S TO P
button) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
Swi tc hi ng the igni tion on . . . . . . . . . . . . . . 74
U nlocking an d loc king vehi cle . . . . . . . . . . . 34
Convenie nce open ing . . . . . . . . . . . . . . . . . . . 40
Convertib le child safety seats . . . . . . . . . . . 1 73
C onvertib le loc kin g re trac to r
A ct ivat ing . . . . . . . . . . . . . . . . . . . . . . . . . .
178
D ea ct ivat ing . . . . . . . . . . . . . . . . . . . . . . . . 179
U sing to secu re a chi ld safety seat . . . . . . 178
C oo la nt
refer to Eng ine coolan t . . . . . . . . . . . . . . . 2 22
Cooling mode (four-zone automat ic climate
contro l) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70
Cooling mode (three -zone climate control) . 68
Crossing water . . . . . . . . . . . . . . . . . . . . . . . 19 4
Cruise control
Switching off . . . . . . . . . . . . . . . . . . . . . . . .
83
War ning/ indica tor lights . . . . . . . . . . . . . . . 22
Cruise cont rol system
Changi ng speed . . . . . . . . . . . . . . . . . . . . . .
82
Prese lecting speed . . . . . . . . . . . . . . . . . . . . 83
switching on . . . . . . . . . . . . . . . . . . . . . . . . . 82
(u pholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Curve light . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Cylinder management
refer to Cylinder on demand System . . . . . 24
Cylinder on demand System . . . . . . . . . . . . . 24
D
D at a reco rder . . . . . . . . . . . . . . . . . . . . . . . . 18 6
279

Indicator light . . . . . . . . . . . . . . . . . . . . . . . 21
Replacing windshield wiper b lades . . . . . . . 52
Sw itching on and
off . . . . . . . . . . . . . . . . . . 5 1
W inte r driv ing
Snow chai ns . . . . . . . . . . . . . . . . . . . . . . . . 246
Tires .. .. .. .. .. .. .. .... ... .. .. .... . 246
W inte r operation
B attery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Cooling system . . . . . . . . . . . . . . . . . . . . . . 22 2
D efrost ing windows (four- zone automat ic
climate cont rol) . . . . . . . . . . . . . . . . . . . . . . 71
Defrosting windows (three-zone climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Seat heating ( four-zone automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Seat heating (three-zone climate control) . 69
S teer ing whee l heating . . . . . . . . . . . . . . . . 72
W inte r ti res . . . . . . . . . . . . . . . . . . . . . . . . . . 246
W inte r use
C ar washes . . . . . . . . . . . . . . . . . . . . . . . . . 203
Removing ice from w indows 205
X
Xenon -Lights. . . . . . . . . . . . . . . . . . . . . . . . . 263
Index
289