2015 AUDI R8 SPYDER cooling

throug h im perce ptib le contro l processes . The
damping provides individua l modulation of
damping forces. For example, with damping
characterist ics set to prov ide greater comfort,
damping is set somewhat harder for a brief peri­
od only as requ ired, when round ing a curve and
when braking .
Standard setting
Select the standard sett ing if you prefer a sus ­
pension setting emphasi zing comfort.
Sport s etting
Select the sport setting if you prefe r a spor ty sus­
pension setting. The LED in the button
[l] comes
on to indicate sport setting .
@ Tips
The warning/indicato r ligh t R in the instr u­
ment cluster comes on in the event of a mal­
function. Drive to the closest a uthorized Audi
dea ler as soon as possible and have the mal­
function repaired.
Sporty driving
Warming up and cooling down
B y care fully warming up and cooling down you r
veh icle, you can he lp ensure tha t it is not over ­
stressed unnecessarily du ring sporty driving.
W hen warming up , the veh icle is driven a t a max ­
i mum eng ine speed of 6 000 R PM
(Vl O engine) or
70 00 RPM (V8 engine) in order to raise the en ­
g ine oi l tempe ratu re to a minimum of 140 °F
(60 °() . The tires also only reach the ir full road
h olding capability once they have warmed up.
The cooling fan can continue to run in you r vehi ­
cle after the engine is switched off . However,
d riving the vehicle to cool it down is part icu larly
important. During sporty driving, the engine and
brakes, the exhaust system, and the transmission
all become extremely hot . Before you park the
ve hicle, you should dr ive it for a few m iles/kilo-
~ mete rs a t light load in the low rpm range to al-
~ low i t to cool down. "': ,...., \!) 1.1'1
N 1.1'1 ,....,
On th e road
Driving on a track
Befo re you take your veh icle o ut on a track, en­
s u re th at i t is in perfe ct condi tion. Fo r ex ample ,
yo u should chec k the tire trea d an d the bra ke
pads . It is bes t to inc rease tire pressu re by about
0 .3 bar.
W hen dr iving on a track , oil consump tion may be
somewhat higher than in "norma l" ope rat ion
¢ page 159 .
You should definitely inspec t your ve hicle afte r
s u bje cting it to seve re condi tions. Are the br ake
pads OK? Is there any thing unusua l about the
t ir es, including the inner and outer sidewalls (e .g.
tread , blistering)? A re the air intakes free of
l eaves and tire dust? Is the o il level OK?
Your a uth orized Audi dea ler or q ua lified wor k­
sho p will be happy to underta ke an inspection be ­
fore and after use on the race track .
A WARNING ._
Some race tracks (e.g. steeply banked turns)
may affect the response of t he ESC.
(D Tips
- Review the t rack requ irements and condi ­
tions befo re you sta rt driv ing.
- W hen d riven on a race track, all vehicle
parts are severe ly stressed. This can result
in increased wear .
73

-If your skin has come in contact with the en­
gine oil, you must subsequently cleanse it
thoroughly.
0 Note
- The oil level must not be above range
¢ page 159, fig. 137 0-danger of convert­
er or engine damage! Contact an authorized
Audi dealer to draw off oil, if necessary.
- Audi does not recommend the use of oil ad­
ditives. They may damage the engine and
adversely affect your New Vehicle Warranty.
@ For the sake of the environment
- Under no circumstances can the oil come in
contact with the sewage network or the soil.
- Observe and follow legal regu lations when
disposing of empty oil containers.
Adding engine oil~
Applies to vehicles: with S tron ic
0 N
-N
~
"' a,
F ig . 141 Engin e co mp artm en t: cove r on t he engin e oil fi ll­
er neck
Before you check anything in the engine compart ­
ment,
always read and heed all WARNINGS
¢.&. in Working in the engine compartment on
page 155.
.,. Shut the engine off .
.. Remove the design cover, if necessary .
.,. Unscrew the cap
'l=?1 to the engine oil fill ing
hole ¢
fig. 141 .
.. Carefully top off with the appropriate o il
¢page 158.
.. Check the oil level again ¢ page 160.
.. Top off the oil again, if necessary .
.. Slide the oil dipstick in and screw the cap back
on the filling hole.
Chec king and filling
A WARNING
- While topping off, the oil must not come in
contact with hot engine parts -fire hazard!
- The oil filler cap must be properly secured to
prevent oil from being sprayed on the hot
engine and exhaust system when the engine
is running -fire hazard!
- If your skin has come in contact with the en­
g ine oil, you must subsequently cleanse it
thoroughly .
(D Note
-The oil level must not be above range
¢ page 160, fig . 139 0 -danger of convert­
er or eng ine damage! Contact an author ized
Audi dea ler to draw off oil, if necessary.
- Audi does not recommend the use of oil ad­
ditives . They may damage the engine and
adversely affect you r New Vehicle Warranty.
@ For the sake of the environment
- Under no circumstances can the oil come in
contact with the sewage network or the soil.
- Observe and follow legal regulations when
disposing of empty o il containers .
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.
T he coo ling system is sealed and genera lly re­
quires little attention.
The cooling system has been filled at the factory
with a permanent coolant which does not need to
be changed. The coolant consists of a mixtu re of
specially conditioned wate r and the manufactur­
er's glycol-basedcoolant additive Gl3 antifreeze
with anticorrosion additives (50% for USA mod­ els; 60% for Canadian models). This mixture both
assures the necessary frost protection and pro­
tects metal components in the engine's cooling
system from corrosio n and scaling. It also ra ises
the boiling point of the coolant .
1111-
161

Checking and filling
Do not reduce the concentration of the coo lant in
the summer by adding p lain water.
The propor·
tion of coolant additive must be at least 50%
but not more than 60%
to maintain antifreeze
protection and cooling efficiency .
If the coolant
frost protection is too low, the coolant could
freeze and damage the ve hicle heating and en­
g ine cooling system .
For year-round driving, antifreeze is added at the
factory for temperatures down to:
- - 31 ° F ( -3 5 °C) USA
- - 40 °F ( - 40 °C) Canada .
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended .
& WARNING
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 155.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in your
vehicle is sufficient to meet the climate con­
dit ions . This is especially important if you
live in a region where the winter is extreme­
l y cold. If necessary, increase the proportion
of coolant add itive to 60%.
- When adding coolant addit ive to your cool­
in g system, remember:
- We recommend using only coolant addi­
tive G12++ or G13 for your vehicle. This
coolant additive is available at authorized
Audi dealers. Other types of antifreeze can
signif icant ly reduce corrosion protection.
The resulting corrosion can cause a loss of
coolant and serious engine damage.
- Do not add any type of radiator leak sealant
to your vehicle's engine coolant. Add ing ra­
diator repair fluid may adversely affect the
funct ion and pe rformance of your cooling
system and could result in damage not cov­
ered by you r New Vehicle Lim ited Warranty.
162
Checking the engine coolant level
Proceed carefully when checking the coolant .
Fig. 142 Conve rtible top : serv ice pos it ion
Fig. 143 Co nve rtible top storage bay : coolant expa nsion
tank
Before you check anything in the eng ine compart­
ment,
always read and heed all WARNINGS
c:> .&. in Working in the engine compartment on
page 155
and park your vehicle on a leve l su r­
face.
The coolant expansion tank is loca ted in the right
s ide of the convertib le top storage bay under the
round metal cover
cf;, fig. 143. The convertible top
must be in the service position to check the cool­
ant level
i=;, fig . 142.
Bringing the closed convertible top into the
service position
.,. Switch the ignition on.
.,. Pull and ho ld the convertib le top switch.
.,. Press and hold the rear window switch too until
the convertible top moves into the service posi­
tion <=>
fig. 142.
Bringing the open convertible to into the
service position
.,. Switch the ignition on .
.,. Press and hold the convert ible top switch .

..... N
r-­N "': ..... \!) ..,.,
N ..,., .....
"' Press and ho ld the rear window switch too unti l
the convertible top moves into the service posi­
t ion
r::!) fig. 142.
Opening th e cool ant e xp ansi on tank cov er
"' Stop the engine and allow it to coo l.
"' Switch the ignition off.
"' Carefu lly remove the bolts in the cover(!) using
a screwdriver and remove the cover. The cool­
ant reservoir is located be low
c:> fig. 143 .
Check ing th e engine coolant l eve l
"' Place a rag or cloth on the cap of the coo lant
expansion tank and turn the cap
ca re full y to
the left (counter-clockwise)
c:> A .
"'Read the coo lant level inside the coolant expan­
s ion tank
c:> fig . 143. With a co ld engine, it
must be above the "min" mark. W ith a hot en­
gine, it can be a little above the ind icated
range .
To obtain an accurate read ing, the eng ine must
be switched off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor
r::!) page 14.
We still recommend you check the coolant level
from time to time .
Coolant lo ss
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
author iz ed Audi dealer. It is not enough merely
to add coolant.
In a
s e a led 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. Do
not open the cap of the coolant expans ion
tank when the engine is hot. You risk being
sca lded.
-
- The coolant add itive, and therefore the cool­
ant itself, is hazardous to health. Keep the
c oolant additive in the or igina l co ntainer out
of the re ach of children.
It is a poison haz­
ard.
Ch eck ing and fillin g
(D Note
Do not add any type of radiator leak sea lant
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 Veh icle Limited Warranty.
Adding coolant
Befo re you check a nyth ing in the eng ine compart­
ment,
alwa ys read and he ed all WARNING S
r::!) A in Working in the engine compartment on
page 155.
"' Add coolant m ixed in the correct rat io
c:> page 161, Coolant.
"' Twist the cap on again tightly.
"'Tighten the cap(!) <::!)page 162, fig. 143 again .
Replacement engine coo lant must conform to ex­
act specifications
c:> page 161, Coolant .
We recommend using only coolant add it ive Gl2+
+, G l3
or in an emergency Gl2 +. Do not use a
different additive. In an emergency use pla in wa­
ter unt il you ca n get the correct add itive and can
restore the co rrect ratio . This should be done as
soon as possib le .
If you have los t a considerab le amount of cool­
ant, then you shou ld add cold antifreeze and cold
water only when the engine is co ld .
Always use
new engine coo lant when refilling .
Do not fill coolant above the "max" mark. Excess
coolant will 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 scalding
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.
163