2015 AUDI RS7 SPORTBACK engine coolant

10 Instruments and warning/indicator lights
Instruments and warning/indicator Lights
Instruments
Instrument cluster and controls
The instrument cluster is your central source of information.
Fig. 3 Overv iew of the inst rument cluster
CD Coolant temperature gauge ...
@ Tachometer (engine rev counter)
@ Turn signals ........... .. .. .
© Display with
- Driver information system .. .
- Warning/ind icator lights
® Tachometer 10
11
46
22
11
@ Fuel
gauge . . . . . . . . . . . . . . . . . 11
@ Tips
The instrument illumination (for dials and
needles) turns on when the ignition is on
and the vehicle lights are turned off . As
the daylight fades, the illumination of the
dia ls likewise dims automatically and will
go out completely when the outside light
is very low. This feature is meant to rem ind
you to switch on the headlights when out­
side light conditions become poor.
Engine coolant temperature gauge
The engine coolant gauge CD c:> page 10, fig. 3
only works when the ignition is on . To prevent
damage to your engine, please note the fol­
l owing important points:
Engine cold
,.._ N
9 (!)
" a,
If only the LEDs at the bottom of the gauge
turn on, the engine has not reached operating
temperature yet. Avoid high engine speeds, heavy engine loads and heavy th rottle applica­
t ions.
Normal temperature
The engine has reached its operating temper­
ature once the LEDs up to the center of the
gauge turn on unde r normal driv ing cond i­
t ions . Th e LEDs higher up may turn on when
the engine is under heavy load or the exterior
temperature is high. This is no need to worry
as long as the . warning light in the instru­
ment cluster does not illum inate . If the LEDs
in the upper area of the disp lay and the indica­
tor light . in the instrument cluster display
turn on, the coolant temperature is too high
c:> page 15.
A WARNING
-Always observe the warn ing in
c:> page 211, before opening the hood
and checking the engine coolant level.

M N
0:: <.J 'SI: ,...., \!) ..,.,
,...., ..,., ,....,
Instrument s and warnin g/indic ator ligh ts 11
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dr ipping from the engine compartment.
You could burn yourself . Let the engine
cool off first until you can no longer see
or hear steam or coo lant escaping.
Q) Note
- Mount ing additional lights or accessories
i n front of the a ir inlets reduces the cool­
i ng effect of the rad iator . At h igh outside
temperatures or high eng ine load, the
engine could overheat.
- The front spo ile r has been designed to
proper ly distribute the cooling air wh en
t h e veh icle i s moving.
If the spoiler is
damaged, this cou ld red uce the cooling
effect and the engine co uld then over ­
heat . Ask yo ur authorized Audi dea ler fo r
ass istance.
Tachometer (engine rev counter)
The tachometer indicates the engine RPM
(revolutions per minutes).
If engine R PM drops be low 1 ,500, you should
downshift to the next lower gea r. T he red area
at the end of the sca le indicates maximum
pe rmissib le engine RPM after the break- in pe­
riod. Before reach ing this area, move these­
lector lever to position 0/5 (Drive) or ease
your foot off the accelerator peda l.
(D Note
The tachometer needle should only br iefly
be in the red zone: you cou ld damage your
eng ine! The beginn ing of the red zone var­
ies depending on the operati ng tempera­
ture of the eng ine .
@ For the sake of the environment
Upshift ing early saves fuel and reduces en­
gine noise.
@ Tips
The engine speed is limited when the en­
g ine is co ld - the full engine output is not ava
ilable . When the engine is at operating
temperature, the red area in the tachome­
ter moves to a higher RPM range.
Fuel gauge
The fuel gauge only works when the ignition is
on. If the fue l level drops below 2 .6 gallons
(10 lite rs), the bottom LED turns red and the
indicato r light
(j) turns on ¢ page 20. The
bottom L ED blinks red whe n the fuel level is
very low.
The possible range based on the current fuel level is shown in tab@¢
page 22, fig. 4.
(D Note
Neve r run the ta nk completely dry. A n ir­
r egular supply of f uel can cause engine
misfiring and fuel could enter the exha ust
system. The catalytic co nve rter could t hen
ove rheat and be damaged .
Warning/indicator
Lights
Description
The ind icator lights in the instrument cluster
blink or tur n on. They indica te f unct ions or
malfunctions ¢
&.
Messages may appea r with some indicato r
li ghts. A warning signal will sound at t he
same t ime . The indica to r li ghts and messages
i n the center of the displays may be rep lace d
by other disp lays. To show them again, select
the tab for ind icator lights and messages us­
ing the multif unction steering whee l
¢
page 22. If there are several malfunc­
tions, you can display them one at a time us­ i ng the thumbwheel.
Some indicators lights in the d isp lay can turn
on in severa l co lors.
A WARNING
- Failure to heed warning lights and other
important vehicle informat ion may resu lt
IJI,,

M N
0:: <.J 'SI: ,...., \!) ..,.,
,...., ..,., ,....,
Instrument s and warnin g/indic ator ligh ts 15
immediately at low speed to the nearest
authorized Audi dealer or qualified repair
facility and have the brake system in­
spected .
- Always keep in m ind that after several
brake applicat ions, you will need greater
pressure on the brake pedal to stop your
vehicle . Do not rely on stra ined brakes to
respond w ith maximum stopp ing power
in critical situations. You must allow for
increased bra king distances . The extra
distance used up by fading brakes could
lead to an accident .
PARK!<®> Electromechanical parking brake
The warning/indicator light monitors the
electromechanical parking brake.
If the indicator light . (USA models)/ .
(Canada models) tu rns on, the par king b rake
was set .
• (USA mod els ) ~ (C anada mode ls) Cau­
tion: V ehicle pa rk e d too stee p
If the indicator lig ht blinks and the message
appears, there is not enough braking power to
keep the vehicle from rolling. The brakes have
overheated . The vehicle could ro ll away even
on a small in cl ine.
Pr ess brake pedal to rel eas e parking brake
To release the parking brake, press the brake
pedal and press the button ~ or start driving
with s tart ing ass ist at the same t ime
c::> page 78.
Please release parking brake
To release the parking brake man ually, press
the brake pedal and press the button~ at the
same time. The parking brake on ly re leases
automatically if the driver's safety be lt is fas­
tened.
Ill Parkin g brake!
If the Ill indica tor l igh t turns on and this
message appea rs, there is a p arking brake
mal function . Drive to your authorized Audi dealer or qualified workshop immediately to
have the malfunction corrected
.
_L Engine cooling system malfunction
A malfunction in the engine cooling system
must be repaired as soon as possible .
• Swit ch off en gin e and check coolant l evel
If the indicato r light turns on and the mes­
sage appea rs, the coolant temperature is too
high or the coolant leve l is too low.
.,. Pull off the road .
.,. Stop the vehicle .
.,. Turn off the engine .
.,. Check coolant level
c::> page 217 .
.,. Add coo lant if necessary c::> page 218.
.,. Con tinue dr iv ing on ly afte r the engine cool ­
ant warning/indicator ligh t goes out .
.,. Contact yo ur authorized Audi dealer for as-
sistance if necessary.
If the engine coo lant level is correct, t hen the
radiator fan may be the ca use of the malfunc­
tion .
• Coola nt temperature t oo high! Plea se let
engine run with vehicle stationary
If the indicator light turns on and the mes­
sage appea rs, let the engi ne run at idle for a
f ew m in utes to cool down.
A WARNING
- If you r vehicle should brea k down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the eng ine and turn on the hazard
warn ing lights
c::> page 45, Emergency
flasher.
-
- Never open the hood if you see or hear
steam or coolant escaping from the en­
gine compartment -you risk being scald­
ed . Wait unt il you can no longer see o r
hea r steam o r coolant escap ing .
- The engine compartment of any vehicle is a dangerous area . Before you perform
any wo rk in the engine compartment,
~

M N
0:: <.J 'SI: ,...., \!) 1.1"1 ,...., 1.1"1 ,....,
Warm and cold Four-zone automatic
climate control
Description
Applies to vehicles: with four-zone automat ic climate co n­
tro l
The climate control system warms, cools and
adds humidity to the a ir in the veh icle inter io r.
It is the most effect ive when the windows and
sunroof* are closed.
If the temperature inside
the parked vehicle becomes very warm, open­ ing the window briefly will speed up the cool­
ing process.
I n all heating mode functions except
defrost,
the blower on ly switches to a higher speed
once the engine coolant has reached a certain
temperature.
Condensation from the cooling system can
drip and form a puddle of water under the ve­
hicle. This is normal and does not mean there
is a leak.
Pollutant filt er
The po llutant filter removes pollutants such
as dust and pollen from the air.
The air pollutants filter must be changed at
the intervals spec ified in your Wa rranty
&
Maintenance book let, so that the air condi ­
tioner can properly work.
I f you d rive your vehicle in an area with h igh
air po llution, the fi lter may need to be
changed more frequent ly than specified in
your Audi Warranty
& Maintenance booklet. If
in doubt, ask your authorized Audi Service Ad·
visor for advice.
Key coded setting s
The clima te control sett ings are a utomat ica lly
stored and assigned to the remote contro l key
that is in use .
Warm and c old 69
A WARNING
-
Reduced visibi lity is dangerous and can
cause acc idents .
- For safe driving it is very important that
all windows be free of ice, snow and con­
densat ion.
- Comp letely fam il iarize yourse lf with the
proper use and funct ion of the heat ing
a nd ventilation system and especially
how to defog and defrost the w indows.
- Never use the windshield wiper/washer system in freez ing weathe r unt il you
have warmed the windshie ld first, using
the heating and ventilation system. The
washer sol ution may freeze on the wind­
shie ld and red uce visibi lity.
CJ) Note
- If you s uspect that the air conditioner
has been damaged, switch the system
off to avoid furt her damage and have it
inspected by a qualified dea lership .
- Repairs to the Audi air conditioner re­
quire specia l technical know ledge and
special tools. Contact an authorized Audi
dealer fo r ass istance.
@ For the sake of the envi ronment
By reducing the amount of f uel you use,
you also red uce the amount of pollutants
emitted into the air.
(D Tips
- Keep the air intake s lo ts ( in front of the
w indshield) free from ice, snow and de­
bris in order to maintain the proper func­
tion of the climate control system.
- The energy ma nagement system may
switch the seat heating* or rear window defroster off temporar ily. These systems
are available again as soon as the energy
balance has been restored .
- Air escapes through vents under the rear window. When plac ing items of cloth ing
on the luggage compartment cover, en­
sure that the openings are not covered.

M N
0::
Starting th e engin e
"'Pre ss the brake peda l r::!> _&..
"'Press the I START ENGINE STOP I button
r::!>fig. 83. T he engine will start .
If the engine should not sta rt immediately ,
the sta rting process is automatically stopped
after a short time. Repeat starting procedure .
A WARNING
-Never allow the engine to run in confined
spaces -danger of asphyxiation .
- Never t urn off the engine unti l the vehi­
cle has come to a complete stop.
- The brake booster and power steering
only work when the engine is running . If
the engine is off, you have to use more
force when steering or braking. Because
you cannot steer and brake as you usua l­
ly would, this could lead to crashes and
ser ious injur ies .
(D Note
-Avoid high engine rpm, full throttle and
heavy engine loads unti l the engine has
reached operating temperature -other ­
wise yo u risk eng ine damage.
- The eng ine cannot be started by pushing
or tow ing the veh icle.
(D Tips
- After a cold engine is started, there may
be a brief period of increased noise be­
ca use oil pressure mus t fi rst bu ild up in
the hyd raulic valve adjusters . This is nor­
mal and not a ca use for concern.
- If you leave the vehicle with the ignit ion
switched on, the ignition will switch off
after a certai n pe riod of time. P lease
note tha t electr ica l equipment s uch as
exterior lights wi ll switch off as well
when that happens.
Stopping the engine
~ "' Bring your vehicle to a complet e stop. ,....,
~ "' Move the selector lever to the P or N po si-
,...., tion.
"' ,....,
On th e ro ad 75
"'Press the I START ENGINE ST OP I button
r::!>poge 74, fig . 83.
Ste ering lock
T he s teering locks when yo u tur n the engine
off using t he
I S TA RT ENGINE STO P! bu tton
and open the d river 's doo r. The locked steer­
ing helps prevent vehicle theft.
Emergency off
If necessary, the engine can be switched off
with the selector lever in the R or D/S posi­
t ion. The engine stops if you press the
I S TAR T ENG IN E ST OP I button at speeds below
6 mph (10 km/ h) .
A WARNING
- Never turn off the engine until the vehi­
cle has come to a complete stop.
- The brake booster and power stee ring
only work when the eng ine is r unning . If
the engine is off, you have to use more
force when steering or braking. Because
you cannot steer and brake as you usual ­
ly would, this co uld lead to crashes and
serio us inju ries .
- For safety reasons , you should a lways
pa rk your vehicle w it h the selector lever
in P. Otherwise, the vehicle could inad­
ver ten tly roll away.
- After the eng ine has been switched off,
the radiator fa n can cont in ue to run for
up to 10 minu tes -even with the ignition
sw itche d off . It can also sw itch on again
after some time i f th e coolant tempera­
ture rises as the result of a heat b uildup
or if the engine is hot and the engine
compartment is additionally heated by
the sun's rays.
(U) Note
Do not stop the engine immediately after
hard o r extended driving. Keep the engine
running for approximate ly two minutes to
prevent excess ive heat bu ild-up .

"' N
a:: I.J ""'. rl I.O
"' rl
"' rl
Checking and filling Engine hood
Releasing the engine hood
The engine hood is released from inside the
vehicle .
Fig. 186 Dr ive r foo twell: re lease leve r
Fig. 187 Rocker sw itch under the hood
Make sure the wiper arms are not raised up
from the w indshield. Otherw ise the paint
could be damaged.
.. With the driver's door open , pull the lever
under the instrument panel in the direction
of the arrow
c::> fig. 186.
.. Raise the hood slightly c::> .&. .
.. Press the rocker switch under the hood up­
ward
c::> fig. 187 . This releases the catch.
.. Open the hood .
A WARNING
Hot engine coo lant can burn you.
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before care­
fully opening the hood.
Checkin g and fillin g 211
Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
When ev er y ou must p erform an y wor k in the
en gine com pa rtm ent , for e xample checking
a nd filling diff ere nt fluid s, th ere is a risk of
inju ry, burn s and accid ent s. To pr eve nt per­
so nal injury alwa ys observ e the foll owing
W ARNING S. The engin e compartm ent of any
v e hicle i s a h aza rdou s area
c::> ,& .
h WARNING
To help avoid injury, before yo u check any ­
thing under the hood:
- Turn off the engine.
- Sw itch off the ignition .
- Apply the parking brake.
- Move selector leve r to P (Park) .
- Always let the eng ine cool down . Hot
components w ill burn skin on contact .
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coo lant escaping from the engine
compa rtment. Wait unt il no steam or
coolant can be seen or heard before care­
fu lly opening the hood.
- Keep ch ildren away from the engine com­
pa rtment.
- Never sp ill fluids on hot engine compo­
nents . They can cause a fire .
- Never touch the rad iator fan. The auxili­
ary electric fan is temperat ure controlled
and can switch on suddenly .
- Never open the coolant reservoir cap
when the engine is still warm . The cool­
ant system is p ressu rized and hot cool­
a nt cou ld spray o ut.
- Protect your face, hands and arm from
steam or hot engine coolant by plac ing a
thick rag ove r the cap when you open the
coo lant rese rvoir.
- Do not remove the engine cover under
any circumstances. This inc reases the
ris k of burns.
- If work on the fue l system o r the elec tri -
cal system is necessary:
II>-

"' N
a:: I.J "". rl I.O
"' rl
"' rl
Checking and filling 213
Engine compartment
Engine compartment overview
These are the most important items that you can check.
Fig. 1 88 Typical l ayout for conta iners a nd engine o il filler cap
@ Jump s tart p oin t(-) with hex
head screw .. .. ..... ... .. .. . 223, 273
@ Jump start point(+) under a cov-
er .. .. ... ..... ...... ...... 223, 273
@ Bra ke fl uid reservo ir ((0)) . . . . . 220
© Eng ine oi l filler cap ("1:::r.) . . . . . 215
® Coolant expansion tank (-L) . . . 217
@ W indshie ld/headlight washer
container
(0) . . . . . . . . . . . . . . 224
_& WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARNINGS
Q .&. in Working in the engine
compartment on page 211.
-
Engine oil
Engine oil specifications
The engine oil used must conform to exact
specifications.
T he service interva l d isp lay in t he instr ument
cluster of yo ur vehicle will inform you when it
is time for an oil change. We recommend that
you have your oil changed by an authorized
Audi Se rv ice Advisor .
If you have to top off the oi l between oi l
c hanges, use the Audi o il quality standard
spec ified in the table.
Audi oil quality standard
Gasoline
VW 502 00 or
engine vw 504 00

"' N
a:: I.J "". rl I.O
"' 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>-