cooling AUDI RS7 SPORTBACK 2015 User Guide

214 Check ing and filling
Using the proper engine o il is important for
the functionality and service life of the en­
g ine . Your engine was factory-filled with a
hi gh-quality oil which can usua lly be used
throughout the enti re year.
0 Note
Y our Limited New Vehicle Warranty does
not cover damage or ma lf u nctions due to
fa ilure to follow recommended mainte­
nance and use requ irements as set forth in
the Audi Owner's Manual and Warranty
&
Ma intenance boo klet.
- Use only a high quality eng ine oi l that ex­
pressly complies w ith the Audi o il quality
sta ndard spec ified for your veh icle's en ­
gine . U sing any other oil can cause seri­
ous eng ine damage.
- Do not mix any l ubr ica nts o r othe r addi­
tives into the eng ine o il. Doing so c an
ca use eng ine dam age.
I f you need to add oi l and there is no ne
availab le tha t mee ts the Audi o il qua lity
s tandar d your engine requires, yo u may
ad d a tota l of no more than 0 .5 quart/liter
of a high-quality "synthetic"oil that meets
the following specifications.
- ACEA A3 or API S M with a viscosity grade
of SAE 0W-30, SAE SW-30 or
SAE SW -40.
- Fo r more information abo ut engine oi l
that has been app roved for your vehicle,
please contact either your a uthori zed
Audi dealer or Audi Customer Relations
at 1 (800) 822 -2834 or visit our web site
at www.audiusa .com or
www .aud icanada .ca .
Engine oil consumption
The engine in your vehicle depends on an ade ­
quate amount of oil to lubricate and cool all
of its moving parts.
In order to provide effective lubrication and
cooling of i nternal engine components, a ll in­
ternal comb ustion eng ines consume a certa in amount of oil. Oil consumpt
ion varies from
engine to engine and may change significant ly
over the life of the engine . Typically, engines
with a spec ified break-in period (see
<=> page 196) consume more oil during the
break -in pe riod than they consume after o il
co nsump tion has stabilized.
Under normal cond itions, the rate of oil con ­
sumption depends on the q ua lity and viscos ity
of the oil, the RPM (revolut ions per minute) at
wh ich the engine is operated, t he ambie nt
temperature and road conditions . Fur ther fac­
tors a re the amount of oil dilut ion from wa ter
condensation or f ue l resid ue and the oxid a­
t ion level of the o il. As any engine is subjec t to
wear as m ileage builds up, t he oil consump­
tion may increase over time until replacement of wo rn components may become necessary.
W it h a ll these variab les coming into play, no
standard rate of oil consumption can be es­
tablished or specified. There is no alte rnative
to regu lar and frequent check ing of the o il lev­
el, see
Note .
If
the yellow engine oil level warning symbo l
in the instrument cluster
I!!! lights up, you
shou ld check the oil leve l as soon as possib le
<=> page 215. Top off the oil at your earliest
convenience
<=> page 215.
A WARNING
-Before you chec k anythi ng in the engine
com partment, always read a nd heed all
WAR NIN GS¢
& in Working in th e engine
compar tment on page 211.
{(D Note
Driving w it h an insufficient o il level is like­
ly to cause severe damage to the engine .
(D Tips
- The oil pressure warn ing display. is
not an indicator of the oil level. Do not
rely on it . Instead, check the oil lev el in
your engine at regular intervals , pref­
erably each time you refuel, and alway s
before going on a long trip. .,.

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"' rl
"' rl
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
qu ires 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 specially conditioned water and the
manufacturer's glycol-based coolant addi-
tive G13 antifreeze with anticorros ion addi­
tives (50% for USA models; 60% for Canadian models) . This mixture both assures the neces­
sary frost protection and protects metal com­
ponents in the engine's cooling system from
corrosion and scaling.
It also raises the boil ­
ing point of the coolant.
Do not reduce the concentration of the coo l­
ant in the summer by adding plain water .
The
proportion of coolant additive must be at
least 50% but not more than 60%
to main­
tain antifree ze protection and cooling efficien­
cy. If the coolant frost protection is too low,
the coolant could freeze and damage the vehi ­
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.
I f you must add coo lant, use a mixture of wa­
ter and coolant addit ive. Mixing the coolant
additive with distilled water is recommended.
& WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ~.&.
in Working in the engine
compartment on page 211.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
Checkin g and fillin g 217
your vehicle is sufficient to meet the cli ­
mate conditions. This is especia lly impor­
tant if you live in a region where the win­
ter is extremely co ld. If necessary, in­
crease the proportion of coolant additive
to 60% .
- When adding coolant additive to your
cooling system, remember :
- We recommend using only coolant ad­
ditive G12++ or G13 (check the label)
for your vehicle . This coolant additive is
avai lable at authorized Audi dealers .
Other types of antifreeze can signifi­
cantly reduce corrosion protection. The resulting corrosion can cause a loss of
coolant and serious engine damage.
- Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant.
Adding radiator repair fluid may adverse­
ly affect the function and performance of
your cooling system and could result in
damage not covered by your New Veh icle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
Fig. 191 En gin e compar tment: cover on the coo lant
expansio n tan k
Before you check anyth ing in the eng ine com­
partment,
always read and heed all WARN­
INGS¢.&, in Working in the engine compart­
ment on page 211 .
"'Park your vehicle on a level surface .
"' Sw itch off the ignition.
"' Read the engine coolant level from the cool­
ant expansion tank ¢
fig. 191, ¢ page 213, Ill>-

218 Check ing and filling
fig . 188. With a cold engine, the coo lant
l evel should be between the "min" and
"max" markings . When the engine is warm ,
the leve l may be slightly above the "max"
mark ing .
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration
9 page 213.
To obtain an accurate reading, the engine
must be switched off .
The expans ion tank in you r vehicle is equipped
with an e lectric coolant level sensor.
When the coolant level is too low, the warning l ight in the Auto-Check System
9 page 15 w ill
illum inate unti l you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level senso r, we
still recommend you check the coolant leve l
from time to time .
Coolant loss
Coolant loss may indicate a le ak 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.
I n a
s ealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
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 .
- Turn off the engine and allow it to coo l
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 carefu lly in
a counter-clockwise direction w hile ap­
plying light, downward pressure on the
top of the cap . -
To avoid being burned, do not spi ll anti­
freeze or coolant on the exha ust system
or hot engine parts. Under certain cond i­
tions, the ethylene glycol in engine coo l­
a nt can catch fire.
(D Note
Do not add any type of radiator leak sea l­
ant to your veh icle's engine coolant. Add­
i ng radiator repair fluid may adverse ly af­
fect the funct ion and pe rformance of you r
cooling system and could result in damage
not cove red by your New Veh icle Limited
War ran ty.
Adding coolant
Be very careful when adding engine coolant.
Befo re you check anyth ing in the eng ine com­
partment,
always read and he ed all WARN­
INGS ¢ ..&. in Working in the engine compart­
ment on page
211.
" Requirement: There must be a residua l
amo unt of coolant in the expansion ta nk
¢ (D .
"Tu rn off the engi ne.
" Le t the eng ine cool down.
" Place a thick rag over the coolant expansion
t ank
9 page 217, fig. 191 and ca refully
twist the cap counter-clockwise ¢&,, .
" Add coolant m ixed in the correct rat io
¢
page 217, Coolant up to the MAX mark­
ing.
" Make sure that the flu id leve l remains sta -
ble . Add more coo la nt if necessary .
" Twist the cap o n again
tightly .
Replacement engine coo lant must conform to
exact spec ificat ions ¢
page 217, Coolant.
We recommend using only coolant add i-
tive
Gl2++, Gl3 or in an emergency Gl2 +. Do
not use a d ifferent addit ive . In an emergency
use p la in water until you can get the correct
additive and can resto re the co rrect rat io . This
shou ld be done as soon as possib le. .,..

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0:: <.J 'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
If you have lost a consi derable amount of
coolant, then you should add co ld antifreeze
and cold water only when the engine is co ld .
Always use
new engine coolant when refi lling.
D o not fi ll coolant above the "MAX " mark . Ex­
cess coolant will be forced out th rough the
p ress ure rel ief valve in the cap when the en­
g ine becomes hot .
A WARNING ,_________
-The cooling system is under press ure and
can get very hot . Reduce the risk of
sca ld ing from hot coo lant by following
these steps.
- Tur n
off the eng ine and a llow itto cool
down.
- Protect your face, hands and arms from
escap ing f lu id a nd steam by cover ing
the cap wi th a la rge, thick rag.
- Turn the cap slow ly and very ca refully
in a cou nte r-clockw ise d irect ion while
a pply ing ligh t, downw ard p ress ure on
the to p of the cap.
- To avo id being burned, do no t sp ill an­
tifreeze or coolan t on t he exhaust sys­
tem or ho t engine parts . U nder certa in
conditions, the ethylene glyco l in en­
gine coolant can catc h fire .
- Antifreeze is poisonous . Always store an ­
tifreeze in its original container and we ll
o ut o f the reach of children.
- If you drain the coolant , it must be
caught and safely stored in a proper con­
tainer clearly marked "poison".
@ Note
- Do not add coolant if the expansion tank
i s empty . Ai r could enter the cooling sys­
tem and damage the engine. If this is
the case, do not continue driving. Seek professional assistance.
- Coolant po llutes the env ironment and
could cause a n engine fire. Excess coo l­
ant wi ll be forced out through the pres­
sure re lief valve in the cap when the en ­
gine becomes hot.
Checkin g and fillin g 219
-If, in an emergency, on ly wate r can be
added, the correct ratio between water
and antifreeze ¢
page 217 must be re­
stored as soon as possible.
@) For the sake of the environment
Drained coolant sho uld not be reused. A l­
ways d ispose of used coolant while observ­
i ng a ll environmental regulations.
, Radiator fan
The radiator fan switches on automatically by
itself .
An auxiliary electric radiato r fan switches on
and
off depending on coolant temperature
and othe r vehicle ope rat ing cond it ions.
After yo u switch the eng ine o ff, the aux iliary
f an can continue running for up to 10 m inutes
- even with the ignition off. It can even switch
on aga in later by itself¢ .&. , if
- the temperatu re of the engine coo lant rises
du e to the h eat build -up from th e engin e in
the engine compa rtment, or
- the engine compa rtment heats up because
the vehicle is parked in intense sunlig ht.
A WARNING ~
- To reduce the risk of persona l inju ry nev-
er touch the radiator fan .
- The a uxiliary electric fan is tempe rat ure
contro lled and can switch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan sw itches on a u­
tomatically when the engine coo lant
reaches a certai n temperature and will
continue to ru n until the coo lant temper­
ature drops. •
•

288 Index
Child restra int system anchors ....... . 179
Ch ild safety .. ................ ... ... 165
Conve rtible locking retracto r .. .. .... . 176
Important safety instructions for u sing
chi ld safety seats ..................
169
Important things to know when driving
with children .... ....... ... .. .... .
165
Tether anchors . . . . . . . . . . . . . . . . . . . . 182
Tether straps . . . . . . . . . . . . . . . . . . . . . 182
Ch ild safety lock
Rear doors ............... ... .... .. 40
Ch ild safety seats ............... ....
17 1
Booster seats . . . . . . . . . . . . . . . . . . . . . 17 4
Conve rtible child seats ............. 172
Convertible locking retractor .. .. .... . 176
How do I properly install a child safety
seat in my vehicle? ......... ... .... .
169
Infant seats .............. ... .... . 171
Installing .... ............. ...... . 176
Installing a child restraint using the
LATCH system .... ..... .... ... ... ..
181
LATCH system ................. .... 181
Lower anchorages ................. 180
Mount ing and releasing the ancho rage
hook .. .. .. ... .......... ...... .. .
181
Safety instructions ............ .... . 169
Unused safety belts on the rear seat .. 171
C igarette lighter . . . . . . . . . . . . . . . . . . . . . 59
C leaning .. ................. .. .... . 201
C limate control (four-zone)
Operation . . . . . . . . . . . . . . . . . . . . . . . . .
70
Clock .. .... ................... ... .. 26
C losing
Rear lid .. ............... ........ ..
37
Sliding/tilting sunroof ....... .. .. .. . . 41
Cold ti re inflation pressure .... ... .... . 233
Com ing home ... .... ...... .. .. .. .. ..
46
Compartments ............ .. .. .. .. .. 60
Compl iance ........................ 285
Consumer Information . . . . . . . . . . 128, 282
Consumption (fue l) ..... ... .. .. .... .. 24
Contact ing NH TSA .................. 128
Controls
Cleaning . .. ..................... . 203 Convenience key
... ... ....... ... ... .. 35
Starting the engine ............ .. .. .
74
Stopping the eng ine (START ENGINE
STOP button) ......................
75
Switching the ignition on ............ 74
Unlocking and locking vehicle ....... .. 35
Convertib le child safety seats . . . . . . . . .
172
Convertib le locking retractor
A ctivating . .... .. ............. ....
178
Deact ivat ing . ................. .. .. 178
Using to secure a child sa fety seat l.76, 178
Coolant
refer to Eng ine coolant ............. 217
Cooling mode (automat ic climate control) 70
Cruise cont ro l
Changing speed .. ... .. ..... ... .. .. . 80
Presetting your speed .. ..... ... .. .. . 80
Switching off ...................... 80
Switching on . . . . . . . . . . . . . . . . . . . . . . .
79
Warning/ind icator lights ............ . 22
(upholder .. .... .. .. ... ..... ... .. .. . 60
Curve light ........ .. .............. .. 96
Cylinder management
refer to Cylinder on demand System .. . 24
Cylinder on demand System . . . . . . . . . . .
24
D
Data recorde r ... .. ............. .... 186
Date d isp lay .. ...... .............. .. 26
Daytime running lights . .. ..... ... .. .. . 44
Declarat ion of compliance
Adaptive cruise control .............
285
Audi side ass ist .. ............. .. .. 285
Cell phone package . . . . . . . . . . . . . . . . 285
Convenience key . ... ... ......... ... 285
E lectronic immobilizer ... .... ... .. .. 285
Garage door opener (Homelink) ...... 285
Remote control key . . . . . . . . . . . . . . . . 285
Tire pressure monitoring system ..... 285
Decorative parts/trim
Cleaning . ..... .. ... .. ..... ... .. .. 203
D EF
What does this mean when it appears in
the tr ip odometer display? ...........
25
Defective light bulb warni ng ......... .. 21

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w
Warning/indicator lights . ... .. .. .. .. .. 11
Airbag system . .. ..... ... .. .. .. .. .. 1 8
Ant i-lock braking system (ABS) . ... .. .. 18
Brake system ............ .... .. .... 14
Cruise control . . . . . . . . . . . . . . . . . . . . . . 22
Electromechan ical park ing brake ...... 15
Electronic power control . .. ... .. ... .. 19
Elect ronic Stabilization Control (ESC) . . . 18
Ge ne rato r .. .... ......... .. .. .. .... 16
I ns trumen t cluste r ........ .. .. .. .. .. 10
M alfu nct io n I ndica to r Lamp (M IL) . .. .. 20
Safety belt ... .... .... ... .. .. .. .... 1 6
Turn signa ls . .... ..... ... .. .. .. .... 22
War ning/Ind icator lights
A irbag system . . . . . . . . . . . . . . . 15 1, 15 2
P ASSENG ER AIR BAG O FF .. .. .. .. .. . 152
Warranty coverages ........... .... .. 282
Washer reservoir .. ..... ... .. .. .. .. . 224
Wear ind icator ............ .. .. .. .. . 24 3
Weights ... .. .. .. ......... .. .. .. ... 279
What happens if you wear yo ur sa fety be lt
too loose? ... .. .... .... ... .. .. .. ... 134
What happens to unbelted occupants? . . 13 1
What impairs driving safety? . .. .. .. .. . 121
What should I do after chang ing a
wheel? . ..... .. .. .. .... ... .. .. .. ... 239
What should I do after rep lacing wheels? 239
Wheel bolts Torque ... .. ............. .... .. ... 254
Wheels ..... .. ... ..... ... .. .. .. ... 226
C hec kin g tire pressure .. ... .. .. .. .. . 23 7
C leaning ... .. .... .... ... .. .. .. ... 202
Cold tire inflat ion pressure . .. .. .. .. . 233
General notes ............ .. .. .. .. . 226
Glossary of t ire and load ing termi nolo-
gy ...... ... ...... ............. .. 228
New tires and wheels ...... .. .. .. .. . 24 5
T ires and vehicle load lim its .. .. .. .. . 24 0
When must a safety belt be rep laced? . . 133
When must the airbag system be inspect-
ed? ... .. .. .. .. .. .. .. .... ... .. .. ... 151
When shou ld I ad just the tire p ressu res? 239
When shou ld I check the tire pressures? . 239
Where are lower anchor ages located? .. . 180
Inde x 297
Where can I find the t ire pressures for my
ca r? .. ... .. .. .. .... .. .. ...... ... .. 237
Why safety belts? . . . . . . . . . . . . . . 130, 131
Windows Cleaning/removing ice . .. .... ... .. .. 203
defrosting (automatic climate control) 71
Windshie ld
Cleaning .. .. .. .. .... ............. . 48
defrosting (automatic climate control) . 71
Windshie ld washer system .... ... .. .. . 48
Washer fl uid leve l .. . .. .. ..... ... .. . 20
Washe r reservo ir ... . .. .. ..... ... .. 224
Windsh ie ld w ipers
Cleaning .. .. .. .. .. .. ........... .. . 49
F olding up . ... .. .. .. ... ..... ... .. . 49
Ind icator lig ht ... ... .. .. ..... ... .. . 21
Replacing windshield wiper b la d es . ... . 49
Switching on/off . ............. .... . 48
Win ter operation
B attery ... .. .. .. .. . .. ... .... ... .. 2 21
Car washes . ... .... . ... ...... ... .. 201
Cooling system . . . . . . . . . . . . . . . . . . . . 217
Defrost ing windows (automatic climate
control) ... .. .. .. .. .. ........... .. . 71
Removing ice from windows ......... 203
Seat heating (automat ic climate control) 71
Steering w heel heat ing . .. .. ... ... .. . 72
T ires ........ ... .. ............... 193
Winter tires . .. .. .. ... ............ .. 252
All-wheel drive . .. ............. .... 252
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