2013 AUDI S8 radiator

16 Instrum ent s and w arn ing /indic ato r light s
dealer or qualified workshop immediately to
have the ma lfunction corrected.
_ l Engine cooling system malfunction
A malfunction in the engin e cooling system
must be repaired as soon as possible .
• Swit ch off en gine and ch eck c oolan t leve l
If the indicator light turns on and the mes­
sage appears, the coo lant temperature is too
h igh or the coo lant level is too low.
.. Pull off the road .
.. Stop the vehicle .
.. Turn off the engine.
.. Check coolant level
¢page 240.
.. Add coolant if necessary ¢ page 241.
.,. Contin ue driving only after the eng ine cool­
ant warning/indicator light goes o ut.
.. Contact your authorized Audi dea ler for as-
sistance if necessary .
I f the engine coolant level is correct, then the
radiator fan may be the cause of the malfunc­
t ion.
• Coo lan t te mpera ture t oo high! Pl ease let
e ngine run with veh icle st a ti on ary
If the indicator light turns on and the mes­
sage appears in t railer mode*, let the engine
r u n at id le for a few m inutes to cool down.
& WARNING
- If your vehicle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the engine and turn on the hazard
warning lights ¢
page 46, Emergency
flasher .
-
-Never open the hood if you see or hear
steam or coolant escap ing from the en­
gine compartme nt -you risk being scald­
ed . Wait until you can no longer see or
hear steam or coo lant escaping.
- The engine compartment of any veh icle
is a dangerous area . Before you perform
any wor k in the engine compartment,
t ur n of the eng ine and allow it to cool. Follow the warning stickers
¢
page 226,
Engine compartment .
@ Note
Do not continue driving if the. symbo l
i ll uminates . There is a malfunction in the
engine cooling system -you could damage
your engine.
% Safety belts
This warning/indicator light reminds you to
put on your safety belt.
T he . warning/ indicator light illum inates
when the ignition is switched on to remind
the driver and any front passenger to put on
the safety belt. Addit iona lly, an acoustic warn­
ing (gong) w ill also sound .
For more Information ¢
page 144, {t Safety
belt warning light .
0 Battery
This warning/indicator light detects a mal ­
function in the generator or in the vehicle 's
electrical system.
T he . warning/ indicato r light illuminates
when you switch on the ignition and must go
out after the engine has started.
• Alternator fault: Batt ery i s not b ein g
charged
If the indicator light turns on and the mes­
sage appears, there is a malf unct ion in the
generator or veh icle elect rical system.
Drive to your authorized Audi dealer or quali­
fied workshop immed iate ly. Be cause the veh i­
cl e battery is discharg ing, tu rn off all unnec­
essary elec trical equipmen t such as the rad io .
Seek professiona l assistance if the battery
c h arge level is too low.
(•) Low battery char ge: battery will be
charg ed while d riving
If the indicator light turns on and the mes­
sage appears, there may be limited sta rting
ability.

Parking systems
General information
App lies to vehicles: with park in g system plus/rear view
camera/peripheral cameras
Depending on your vehicle's equipment, vari­
ous parking aids will help you when parking
and maneuvering.
The
advanced parking system with rear view
camera
ass ists you when parking by audibly
and v isua lly indicating objects detected
in
front of
and behind the vehicle . The rear view
camera shows the area behind the vehicle in
the Infotainment display. This display assists
you when you are cross or para llel parking
c:;,page 122.
The peripheral cameras assist you with park­
ing and maneuvering. You are aided by various
cameras depending on the vehicle equipment level ¢
page 126. In addition, you are assist­
ed by the functions from the sensors
c:;, page 122, Sensors, c:;, page 124 , Visual
display .
A WARNING
-Always look fo r traff ic and check the area
around your vehicle by looking at it di­
rect ly as well. The parking system cannot
replace the driver's attention. The driver
is a lways respons ible for safety during
parking and for all other maneuvers.
- Please note that some sur faces, such as
clothing, are not detected by the system .
- Sensors and cameras have blind spots in
which peop le and objects cannot be de­
tected. Be especially cautious of children
and animals.
- The sensors can be displaced by impacts
or damage to the radiator grille, bumper,
wheel housing and the underbody. The
parking systems may become impaired
as a result. Have your authorized Audi
dealer or qualified workshop check their
function.
- Make sure the sensors are not covered by
stickers, deposits or any other obstruc­
t ions as it may impair the sensor func-
Parking systems 121
tion. For information on cleaning, refer
to
c:;, page 218.
(D Note
-Some objects are not detected by the
system under certain circumstances:
- Objects such as barr ier chains, trailer
draw bars, vertical poles or fences
- Objects above the sensors such as wall
extensions
- Objects w ith specific surfaces or struc­
tures such as chain link fences or pow­
der snow .
- If you continue driving closer to a low-ly­
ing object, it may disappear from the
sensor range. Note that you w ill no lon­
ger be warned about this obstacle .
(D Tips
- The system may provide a warning even
though there are no obstacles in the cov­
erage area in some situations, such as:
- certain road surfaces or for long grass.
- externa l ult rason ic so urces e.g. from
cleaning vehicles.
- heavy rain, snow or thick vehicle ex ­
haust.
- We recommend that you practice park­
ing in a traffic-free location or parking
lot to become familiar w ith the system.
When doing this, there should be good
light and weather cond itions.
- You can change the volume and pitch of
the signals as we ll as the disp lay
c:;, page 131.
-Please refer to the instructions for tow­
ing a trailer
c:;, page 131.
- What appears in the infotainment dis­
play is somewhat time-delayed.

126 Parking systems
long side of the blue surface so that there is
sufficient space from the obstacle. The sur­
face m ust not be to uchi ng. You will a lso need
to start tur ning the steer ing wheel much ear­
lier. The blue curve
r:::;, fig. 13 7 must not touch
the obstacle and should have sufficient room .
@ Tips
The left or right orientation lines and sur­
faces will be displayed, depending on the turn signa l be ing used .
Peripheral cameras
Introduction
Applies to vehicles: with top view camera system
In addition to the f unctions from the sensors
c::> page 122, Sensors, c::> page 124, Visual dis ­
play,
this parking system contains peripheral
cameras. Depending on the ve hicle equ ip­
ment, you are assisted by various
views such
as periphera l view, corner views at the front
and rear of the veh icle, and views di rectly in
fro nt of o r behind the vehicle.
General information
Applies to vehicles: with top view camera system
Fig. 138 Locat io n of peripheral cameras
Depending on the vehicle equ ipment, the pe­
ripheral cameras are found in the radiator
grille, i n the luggage compartment lid and on
both exterior mirrors
r:::;, fig . 138 . Make sure
that the lenses are not covered by deposits or
any other obstructions as it may impair the
system. For information on cleani ng, refer to
c::> page 218.
In the to p view mode, b lack corners are
shown in t he vehicle silhouette . Objects in
these areas are outside of the camera 's field
of
view and are not detected .
T he accuracy of the o rientation lines and the
blue surfaces is reduced if the adaptive air
suspension * is faulty, if the vehicle is lifted or
if the
dy namic mode is activated r:::;, page 109.
A WARNING
-- Always read and follow the applicable
warn ings
r:::;, & in General information on
page 121 .
-If the position or the installat io n angle
of a camera was changed, after a colli­
sion for example, do not continue to use
the system fo r safety reasons. Have it
checked by your author ized Audi deale r­
sh ip.
- Keep in mind that the image in the dis­
p la y is distorted if the exterior mi rror
housing has bee n manually adjusted .
- U se the
rear mode and the corn er view
( rear)
m od e only when the luggage com­
partment lid is fu lly closed . Otherw ise
the image in the display will be d istort­
ed .
- The vehicle surro undings are shown us­
ing the came ra images. The vehicle im­
age is shown by the system. Ob jects and
obstacles above the camera are not d is­
p layed.
- Camera lenses enlarge and distort the field of vision. The objects appear both
altered and inaccurate on the screen.
(D Note
- Always read and follow the applica ble
warnings
¢ (I) in General information on
page 121.
- The Infotainment d isplay shows the di ­
rection in which the rear of the vehicle is
traveling based on the steer ing whee l
ang le. The front of the vehicle front
sw ings out mo re than the rear of the
ve­
hicl e. M aintain pl enty of d istance so that .,_

-Before reaching into the front pane l, al­
ways switch off the ignition. Otherwise,
the windsh ield wiper system could un in­
tent ionally be switched on, possib ly
caus ing personal injury from the moving
wiper linkage .
- Never reach into the area around or
touch the radiator fan. The auxiliary fan is temperature controlled and can switch
on suddenly- even when the ign it ion is
off.
- Do not wash, wax or dry the engine w ith
the engine running. Moving or hot pa rts
cou ld inju re you .
- Do not clean the underside of the chas­
sis, fenders, wheel cove rs, or other hard
to reach parts w ithout protecting your
hands and arms . You may cut yourse lf on
sharp-edged metal parts.
- Always read and heed all WARNI NGS and
other information ~page
215 .
Cleaning and protec tion 22 7
•
•

232 Checking and filling
Checking and filling Engine hood
Releasing the engine hood
The engine hood is released from inside the
vehicle .
Fig. 193 Driver foo twell: release lever
AUD I
Fig. 194 Rocker switch un der the hood
Make sure the wiper arms are not raised up
from the windshield. Otherwise the paint
could be damaged .
.,. Pull the lever under the instrument panel in
the direction of the arrow
~ fig. 193.
.,. Raise the hood slightly~,&. .
... Press the rocker switch under the hood up­
ward
~ fig. 194. This releases th e catch.
... Open the hood.
&_ WARNING
Hot engine coolant 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 .
' Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
Whenever you must perform any work in the
engine compartment, for example checking
and filling different fluids, there is a risk of injury, burns and accidents. To prevent per­
sonal injury always observe the following
WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ ,&. .
A WARNING
To help avoid injury, before you check any­
thing under the hood:
- Turn off the engine.
- Switch off the ignition .
- Apply the parking brake.
- Move selector lever to "P" (Park) .
- Always let the engine cool down. Hot
components will burn skin on contact.
- 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.
- Keep children away from the engine com­
partment.
- Never spill fluids on hot engine compo­
nents . They can cause a fire .
- Never touch the radiator fan. The auxili­
ary electric fan is temperature controlled
and can switch on suddenly .
- Never open the coolant reservoir cap
when the engine is still warm . The cool­
ant system is pressurized and hot cool­
ant could spray out.
- Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the
coolant reservoir.
- Do not remove the engine cover under
any circumstances. This increases the
risk of burns.
- If work on the fuel system or the electri­
cal system is necessary:

-Always disconnect the battery.
- Never smoke or work near heaters or open flames. Fluids in the engine com­
partment could start a fire.
- Keep an approved fire extinguisher im­
mediately available.
- To avoid electrical shock and personal in­
jury while the engine is running or being
started, never touch :
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair
with the engine running:
- First, fully apply the parking brake,
move selector lever to "P" (Park).
- Always use extreme caution to prevent
clothing, jewelry, or long hair from get­
ting caught in the radiator fan, V-belts
or other moving parts, or from contact­ ing hot parts. Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine.
- Minimize exposure to emission and
chemical ha zards c:::> & .
A WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
California to cause cancer and birth de­
fects and reproductive harm. In addition ,
certain fluids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm .
Checking and filling 233
-Battery posts, terminals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive harms. Wash hands after handling.
(D Note
When adding fluids, always make sure that
they are poured into the proper container
or filler opening, otherwise serious dam­
age to vehicle systems will occur.
(® For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly . If
you see spots from oil or other vehicle flu­ ids, have your vehicle inspected by an au­
thorized Audi dealer.
Closing the engine hood
.,. Pull the hood down until the pressure from
the struts is reduced.
"' Let the hood
drop down and latch in place.
Do not try to push it shut; it may fail to en­
gage
c:::> ,A .
A WARNING
-
A hood that is not completely latched
could fly up and block your view while driv ­
ing .
- When you close the engine hood, check it
to make sure the safety catch has proper­ ly engaged. The hood should be flush
with the surrounding vehicle body parts.
- If you notice while driving that the hood
is not secured properly , stop at once and
close it. •
•

240 Checking 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 water and the manufacturer's gly ­
col-based coolant additive Gl3 ant ifreeze
with anticorros ion add itives (50% for USA
models; 60% for Canadian models). This mix­
ture both assures the necessary frost protec­
tion and protects metal components in the
engine's cooling system from corrosion and
scaling. It also raises the boiling 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 veh i­
cle heating and engine 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.
A WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS
c:> &. in Working in the engine
compartment on page 232.
- Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­
mate conditions. This is especially impor­
tant if you live in a region where the w in- ter
is extreme ly cold . 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 Gl2++ or Gl3 for your vehicle .
This coolant additive is available at au­
thorized Audi dealers. Other types of
antifreeze can significantly reduce cor­
rosion protection. The resulting corro­
sion can ca use a loss of coolant and se­
rious engine damage.
- Do not add any type of radiator leak seal ­
ant to your vehicle's engine coolant .
Add ing 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 Vehicle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 200 Engin e compar tmen t: cover on t he coolant
expansio n ta nk
Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS c:> &. in Working in the engine compart ­
ment on page 232 .
Park your vehicle on a level surface .
.,. Switch off the ignition.
.,. Read the engine coolant level from the
coo lant expansion tank
c:> fig. 200,
c:> page 234. With a cold engine, the coolant
level 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
tration ¢
page 234.
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 241
@ 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 232 .
.,. Turn off the engine .
.,. let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank ¢
page 240, fig . 200 and carefully
twist the cap counter-clockwise ¢&_ .
.,. Add coolant.
.,. Twist the cap on again
tightly.
Replacement engine coolant must conform to
exact specifications ¢
page 240, Coolant. We
recommend using only coolant additive G12+
+, G3 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-
•
•