2014 AUDI RS7 SPORTBACK engine coolant

220 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 specially conditioned water and the
manufacturer's glycol-based coolant addi-
tive G13 antifreeze with ant icorros 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 a lso raises the boil­
ing point of the coo lant.
D o not reduce the concentration o f the coo l­
ant in the summer by adding plain water .
The
proportion of coolant add it iv e mu st be at
lea st 50 % but not mo re than 60 %
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.
I f you must add coo lant, use a m ixture of wa­
ter and coolant addit ive. Mixing the coolant
addit ive wi th dist illed wate r is recommended.
_& WARNING
Before yo u check any thing in the engine
compartment, always read and heed all
WARNINGS
¢ &. in Working in the engine
compartment on page 213.
(D Note
- Before winter se ts in, have the coolant
checked to see if the coolant additive in
-
your vehicle is sufficient to meet the cli­ mate conditions . This is especia lly impor ­
tant if you live in a reg ion where the win­
ter is extreme ly cold. If necessary, in­
crease the proportion of coolant add itive
to 60% .
- When adding coolant additive to your
cooling system , remember :
- We recommend us ing on ly coolant ad­
d it ive G12 ++ or G1 3 (check the labe l)
for your vehicle . This coolant additive is
avai lable at autho rized Audi dea lers .
Other types of antifreeze can signifi­
cantly reduce corrosion protection. The
resu lting corrosion can cause a loss of
coolant and serious engine damage .
- Do not add any type of rad iator leak seal­
ant to your vehicle's engine coolant.
Add ing radiator repa ir flu id may adverse ­
ly affect the function and performance of
your cooling system and could resu lt in
damage not covered by you r New Ve hicle
Limited War ran ty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
F ig . 1 91 Engin e compar tmen t: cover o n th e coolant
expans io n tank
Befo re you check anyth ing in the engine com­
partment,
always r ead and he ed all WARN­
INGS
¢ &_ in Working in the engine compart­
ment on page 213.
.,. Park your vehicle on a level surface .
.,. Switch off the ignition .
.,. Read the engine coo lant level from the coo l­
a nt expansion tank¢
fig . 191, ¢ page 215, ..,.

fig. 188. With a cold engine, the coolant
lev el should be between the "min" and
"max" markings. When the engine is warm,
the level may be slightly above the "max"
marking .
The location of the coolant expansion tank
can be seen in the engine compartment illus ­
t ration
<=> page 215.
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 15 will
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.
Checking and filling 221
-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 .
(D 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 213.
"'Turn off the engine.
"'Let the engine cool down .
"' Place a thick rag over the coolant expansion
tank
<=> page 220, fig. 191 and carefully
twist the cap counter-clockwise <=>_& .
"'Add coolant mixed in the correct ratio
<=> page 220, Coolant.
"'Twist the cap on again tightly.
Replacement engine coolant must conform to
exact specifications <=>
page 220, Coolant.
We recommend using only coolant addi-
tive 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 ..,.
•
•

222 Checking and filling
pressure relief valve in the cap when the en ­
gine becomes hot.
.&_ WARNING
- The cooling system is under pressure and
can get
very hot. Reduce the risk of
sca lding 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
escap ing flu id and steam by cover ing
the cap with a large , thick rag .
- Tu rn the cap slowly and
very carefully
in a counter -clockwise direction while
applying light, downward pressure 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 glycol in en­
g ine coolant can catch fire.
- Antifreeze is poisonous. Always store an­
t ifreeze in its original container and well
out of the reach of children.
- If you drain the coolant, it must be
caught and safely stored in a proper con­
ta iner clearly marked "poison".
(D Note
- Coolant po llutes the environment and
could cause an engine fire. Excess coo l­
ant will be forced out through the pres­
sure relief valve i n the cap when the en­
gine becomes hot .
- If, in an emergency, only water can be
added, the correct ratio between wate r
and antifreeze ~
page 220 must be re­
stored as soon as possib le.
@) For the sake of the environment
Dra ined coolant should not be reused . Al­
ways dispose of used coolant while
observ­
ing all environmental regulations .
Radiator fan
The radiator fan switches on automatically by
itself .
An auxilia ry electric r adiator fan switches on
and off depending on coolan t tempera ture
and other vehicle operat ing condit ions .
After you switch the engine off, the aux iliary
fan can continue running for up to 10 minutes
- even w ith the ignition off . It can even swi tch
on aga in later by itself
c> .&. , if
- the temperature of the engine coo lant rises
due to the heat build-up from the engine in
the engine compartmen t, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
.&_ WARNING ,_
- To reduce the risk of personal injury nev­
er touch the radiator fan .
- The auxiliary electric fan is temperature
controlled and can sw itch on suddenly
even when the engine is not running .
- The auxiliary radiator fan sw itches on au­
tomatically when the engine coo lant
reac hes a certain t emperature and wi ll
continue to run until the coolant temper­
a ture drops.
Brake fluid
Checking brake fluid level
Fi g. 19 2 Engin e compart ment: cover on t he bra ke fluid
re servoir
Ill>

CD Note
Never use a fast charger as a booster to
start the engine. This will seriously dam­
age sensitive electronic components, such
as control units, relays, radio, etc., as well
as the battery charger .
Battery replacement
The new battery must have the same specifi­
cations and dimensions as the original equip­
ment battery .
Intelligent energy management in your vehi­
cle is respons ible for distributing the electri­
cal energy throughout your vehicle
c::> page 195. The intelligent energy manage­
ment system w ill keep the engine battery
charged bette r than vehicles w ithout t his sys­
tem. To make sure the additional electr ica l en­
ergy is available once again after you have
changed the battery, we recommend that you
install batteries of the same type and manu­
facture only (the same as those installed at
the time your vehicle was delivered). Specifi­
cations are listed on the battery hous ing. Your
author ized dealer must code the battery in
the energy management system to enable you
to use the energy management functions cor­
rectly after replac ing the battery.
The new battery must have the same capacity,
voltage (12-volts), amperage, const ruct ion
and p lug sealing.
When installing the battery, make sure the ig­
n ition and all electr ical consumers are sw itch­
ed off .
CD Note
Make sure the ventilation hose on the s ide
of the battery is connected, otherwise
fumes or battery ac id can leak out.
@ For the sake of the environment
Because of the problem of proper d isposal
of a battery, we recommend your author­
ized Aud i dealer change the battery for
you . Batteries contain su lfuric ac id and
Checkin g and fillin g 22 7
lead and must always be disposed o f prop­
erly in compliance with a ll environmental
regulations. Disposing of vehicle batter ies
i mproperly is very dangerous to the envi­
ronment .
Windshield/headlight*
washer container
Fig. 194 Engine compart ment: cover on th e windshield
and headl ig ht* washer fluid reservo ir
The washer fluid conta iner is marked w ith the
symbol~ on its cap
c::> fig. 194, c::>page 215,
fig. 188.
.,. Before you check anything in the engine
compartment, always read and heed all
WARNINGS c::> &. in Working in the engine
compartment on page 213.
.. Lift the filler cap tongue to add washer flu­
id. You can f ill the container to the top .
.. Press the cap back onto the fi ller neck after
filling the container.
You can find the reservoir
capacity in the table
in
c::> page 271.
Clean water should be used when filling up. If
possible, use soft water to prevent scaling on
washer jets. Always add a g lass cleaner solu­
tion (with frost protection in the winter).
([) Note
Do not mix engine coolant antifreeze or
any other additives to fill up the wind­
shield washer reservoir .
•
•

2 70 Technical data
Technical data
Vehicle identification
Fig . 228 Vehicle Ident ification Number (VlN) plate: lo·
cat ion on driver 's s ide dash panel
XXXXX XX · X -XXXX XXX xx
r,"\__l f~ -11!111 · NII. ~ V!Hlll -llllll . NO.
IYP IT'fl'E
XXXXXXXX XX X XXXXXXXX
XXX XXX
XX XXXXXXX XX X X XX
XXX
KW XXX
®i ~~:f :l~~ XXXX XXX XXX
@+ ~~r= XXXX I XXXX XXX I XX M ,. AIIISl./ lflllllS
EOA 7D5 4 UB 6XM SSG 5RW
2E H JDZ llB l AS lBA
3FC 5MU 7Xl
FO A
9G3 OG7 O
YH OJF
TL6 J
KA BEH
UlA X9B QZ 7
l XW
8Q3 9Q8 82 4 020
7T6 CV 7 7KO 4X3 2K2
3L4 4 KC 3YO 4I3 502
lS A 7GB Q1A 4GQ
XX X XX X XX X XXXX
Fig. 229 Th e vehicle identificat ion label -inside the
l uggag e compa rtmen t
Vehicle Identification Number (VlN)
The Vehicle Identification Number is located
in different p laces:
- under the w indshield on the driver's side
~fig . 228.
-in the MMI: Select: Function button ICARI >
(Car)* systems> VIN number .
-on the veh icle identification label.
Vehicle identification label
The vehicle identification label is located in
the luggage compartment in the spare wheel
well. T
he label ~
fig. 229 shows the following vehi ­
cle data:
(D Vehicle Ident ificat ion Number (VIN )
@ . Vehicle type, engine output, transmission
® Engine and transmission code
@ Paint number and interior
® Optional equipment numbers
Th e information of the vehicle identification
lab el can also be found in your Warranty
&
Maintenance booklet.
Safety compliance sticker
The safety compliance sticker is your assur­
ance that your new veh icle complies with all
applicable Federal Motor Vehicle Safety
Standards which were in effect at the time the
vehicle was manufactured. You can find this
sticker on the door jamb on the driver's side.
It shows the month and year of production
and the vehicle ident ificat ion number of your
vehicle (perfo rat ion) as well as the Gross Vehi­
cl e Weight Rating (GVWR) and the Gross Axle
Weight Rating (GAWR) .
High voltage warning label
The high voltage warning label is located in
the engine compartment next to the engine
hood re lease . The spark ign ition sys tem com·
plies with the Canadian standard IC ES-002.
Weights
Gross Vehicle Weight Rating
The Gross Vehicle Weight Rating (GVWR), and
the Gross Axle Weight Rat ing (GAWR) for
front and rear are listed on a sticker on the
doo r jamb on the driver' s side .
The Gross Vehicle Weight Rating includes the
weight of the bas ic vehicle plus fu ll fuel tank,
oil and coolant, plus maximum load, which in­
cl udes passenger weight (150 lbs/68 kg per
designated seating position) and luggage
weight ~&. - .,.

in P (Park posi tion) an d the park brake is
applied.
@ For the sake of the environment
- Chang ing the engine settings wi ll ad ­
versely affect emission levels . This is det­
rimenta l to the environment and increas­
es fue l cons umption .
- Always observe env ironmental regula­
tions when d ispos ing of old engine oil,
used brake fluid, dirty engine coolant,
spent batter ies or worn out tires.
- Undeployed airbag modules and preten­
s ioners might be classified as Perchlo­
rate Material -spec ial handling may ap­
ply, see www .dtsc .ca .gov/hazardous­
waste/perch lorate . When the veh icle or
parts of the restrai nt system includ ing
airb ag mod ules safety be lts wit h preten­
s ioners are scrapped, all applic able laws
and regulations must be observed. Your
a utho rized Audi dea le r is familiar with
these req uirements and we recommend
that you have your dealer perform this
serv ice for you .
Additional accessories,
modifications and
parts replacement
Additional accessories and parts
replacement
Always consult an authorized Audi dealer be­
fore purchasing accessories .
Your vehicle incorporates the latest safety de ­
sig n featu res ensuring a high standard of ac­
tive and passive safety .
This sa fe ty could be compromised by non-ap­
proved changes to the veh icle . For this reason ,
if pa rts have to be replaced, p lease observe
the following points when install ing addition­
a l acc essories:
Approved Audi accessor ies and genuine Audi
pa rts are ava ilable from authorized Aud i deal­
e rs.
Con sumer In formation 275
T hese dea le rs a lso have the necessary facili ­
ties, tools a nd trained specialists to install the
parts and accessories properly .
_& WARNING
Using the wrong spare parts or using non­
approved accessories can cause damage to
the vehicle and ser ious persona l injury .
- Use on ly accessories express ly approved
by Audi and ge nuine Audi spare parts
- These parts and accessories have been
specially designed to be used on your ve­
hicle .
- Never install accessor ies such as tele­
phone crad les or beverage ho lders on air­
bag covers or w ithi n the airbag deploy­
ment zones. Do ing so wi ll increas e th e
ris k of injury if a irbags are triggered in an
accide nt!
- Before you check anything in the engine
compa rtment, always read and heed a ll
WARNIN GS
<:!)page 213.
(D Note
-If items other than ge nuine Audi spare
parts, add-on equipment and accessory
items are used o r if repair wo rk is no t
perf ormed ac cor ding to spe cifie d meth­
ods, this ca n resu lt in seve re dam age to
your vehicle's engine and bo dy (such as
co rrosion) an d adve rsely affect yo ur vehi­
cle 's warranty .
- If emergency repairs must be perfo rme d
elsewhere , have the vehicle examine d by
an authorized A udi dealer as soon as
possible.
- The manufacturer cannot be held lia b le
for damage wh ich occ urs due to failure
to comply with these stipu lations.
Technical Modifications
Our guidelines must be complied with when
technical modifications are made.
A lways consult an authorized Audi dealer be-
-
fore start ing work on any modifications. ..,_
•
•

A
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 2 7 5
Active lane assist . . . . . . . . . . . . . . . . . . . . 90
Activating and deactivating . .. .. .. .. .. 91
C leaning the camera area .. .. .. .. .. . 204
Description .............. .... .. .... 90
Instrument cluster indicator light . . . . . 91
Messages .. ................ ... .... 91
Notes on instrument cluster display . . . . 91
Setting the steering wheel vibration .. .. 92
AC (automatic climate control) . .. .. .. .. 70
Adaptive air suspension/sport .. .. ... ... 96
Adaptive cruise control ......... ... .... 81
Cleaning the sensor .......... ..... . 204
Messages .. ............. .... .. .... 88
Request for driver intervention . . . . . . . . 86
Stop-and-go traffic . . . . . . . . . . . . . . . . . 85
Adaptive Light (defective) ............. 21
Adding Engine coolant ........... .. .. .. .. . 221
Engine oil .. ............. .... .. ... 218
Windshield washer fluid ............ 227
Additives Engine oil .. ....... ...... .... .. .. . 218
Adjusting Air distribution (automatic climate con-
trol) ..... ... ...... ....... ...... ... 71
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 53
Instrument illumination ... .. .. .. .. .. 47
Steering column e lectrically .. .. .. .. .. 73
Steering column manually . .. .. .. .. .. 73
Temperature (automatic climate control) 71
Airbag system . . . . . . . . . . . . . . . . . 142, 163
Advanced Airbag System . . . . . . . . . . . . 146
Advanced Airbag System components . 150
Care . .. .. .. .... ............. .. .. . 158
Children ... ................ ... ... 170
Child restraints .............. ... ... 170
Components (front airbags) . ... .. .. . 150
Danger of fitting a child seat on the front
passenger seat . . . . . . . . . . . . . . . . . . . . 144
Disposal . .. ............. .... .. .. . 158
Front airbags . . . . . . . . . . . . . . . . 146, 148
How do the front airbags work? . ..... 152
H ow many airbags does my vehicle
have? ... .. .... ............. .. .. . 150
Index 277
How the Advanced Airbag System com-
ponents work together ............ . 152
Important safety instructions on the
knee airbag system ................ 161
Important things to know ......... .. 142
Knee airbags . .. .. .. ............... 159
Monitoring .. .. .. .. . .. .... ........ 154
PASSENGER AIR BAG OFF light ....... 155
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Safety instructions .... ......... .. .. 157
Side airbags ... .. .. ............... 162
Side curtain airbags ............... . 165
Warning/indicator lights ............ . 18
Warning/Indicator lights ....... .. .. 154
When must the system be inspected? 154
Aircraft Transporting your vehicle
Alcantara 268
Cleaning .. .. .. .. .... ........... .. 206
All-wheel drive .. .. .. ............... 195
Winter tires . .. .. .... ... .... .... .. 243
Alternator ... ..... .. ................ 16
Ambience lighting ... ... ..... ... .... . 47
Anti-freeze
refer to Engine coolant ............. 220
Anti-lock braking system ............ . 189
Warning/indicator lights . . . . . . . . . 18, 19
Anti-s lip regu lation .... ......... .. .. 189
Warning/indicator lights ........ .. .. . 18
Anti-theft systems Electronic immobilizer ............. .. 33
Ashtray ..... ... .... ................ 59
Audi braking guard
refer to brak ing guard .......... .... . 81
Audi drive select
refer to drive select ... .. ...... .... .. 96
Audi Serv ice Repair Manuals and Litera-
ture ......... .. .. ................. 273
AUTO automatic climate control .......... .. 71
Automatic headlights ............... 44
Auto Lock . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Automatic belt retractor ......... .. .. 136
Automatic climate control
Air vents .. .. .... .. ................ 71
Automatic recirculation ............ .. 72
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 70
•
•

278 Index
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
synchronizing ............. ... .... .. 71
Automatic Shift Lock (ASL) .......... . 105
Automatic transmission . . . . . . . . . . . . . . 104
Automatic Shift Lock (ASL) . .. .. .. .. . 105
Driving .... .. ........ .... ... .. .. . 106
Emergency mode ........... .. .. ... 108
E mergency release ........ .. .. .. .. . 109
Kick -down ............... .... .... . 108
Manual shift program ......... .. .. . 108
Selector lever ............. ... .... . 104
Automatic wipers . .. ........ ... .. .. .. 48
Auto Safety Hotline . . . . . . . . . . . . . . . . . 131
Average consumption ....... .. .. .. .. . . 24
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damaging the vehicle ........ .. . 199
B
Bag hooks . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Battery ... .. .. .. ............ ... .. . 223
Charging ... .. .. .. .......... ... .. . 226
I mportant warnings ...... .. .. .. .. . 224
Jump starting .. ........ .. .. .. .. .. . 264
L ocat ion ..... ........... ........ . 224
l ow ... .... ................ ..... . 195
Rep lacing the battery ...... ... .. .. . 227
State of charge ............ ... .. .. . 195
Winter operation ......... .... .... . 223
Working on the battery .... .. .. .. .. . 224
Before driving . . . . . . . . . . . . . . . . . . . . . . 123
Blended gasoline .... ...... .. .. .. .. . 208
Blower (automatic climate control) . . . . . . 71
Boost display . . . . . . . . . . . . . . . . . . . . . . . . 28
Booster seats ... .... ...... .. .. .. .. . 177
Boost pressure indicator .......... .. .. 28
Brake fluid Changing the brake fl uid ... .... .. .. . 223
Check ing the brake fluid level . .. .. .. . 222
What is the correct brake fluid leve l? .. 222
What should I do if the brake fluid warn-
ing light comes on? ........ .... ... . 222
Brake system Anti-lock braking system ..... .. ...... 19
Brake assist system ........ ... .. .. . 189
Brake booster ............. ... .... . 193
Brake fluid ............... ... .... . 222 Brake fluid specifications for refill and re­
placement
. . . . . . . . . . . . . . . . . . . . . . . 223
Brake light defective . . . . . . . . . . . . . . . . 21
Brake pads ...... ............. .... 198
Electromechanical parking brake . .... . 77
Fluid reservoir . .. ................ . 222
How does moisture or road salt affect the
brakes? ....... .. .. ........ ... ... . 193
Warning/ind icator lights ...... .. .. .. . 14
Worn b rake pads symbo l ........ .. .. . 20
braking guard
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Braking guard ..... ............. ... .. 81
Messages . .. .. .. .. ........... .... . 88
Break-in per iod .... ............. .... 198
Brake pads .... .. ................ . 198
Tires .... ..... .. .. .............. . 198
Bu lbs .. .. .. .. .. .. .. .. ...... ... .. .. 263
C
California Proposition 65 Warn ing .... . 214
Battery specific .. ..... ......... ... 225
Capacities .. .... .. ................. 271
Engine oil ....... ............. .... 215
Carbon parts Cleaning . . . . . . . . . . . . . . . . . . . . 205, 206
Car carrier Transporting your vehicle ....... .. .. 268
Care ... .. .. .. .. .. ............. .. .. 203
Cargo area . ..... .. ............. ... . 129
Cargo net . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Catalytic converter .............. .. .. 199
Center armrest Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Central locking .. .. .......... ...... .. 34
Emergency locking ... ....... ...... .. 38
Certification ..................... .. 276
Changi ng a wheel .. ... .......... .. .. 254
Changing engine oil .......... ...... . 219
Checking Engine coolant level ............ .... 220
Tire pressure ... .. ... .......... .. .. 234