2015 AUDI R8 SPYDER radiator

Checking and filling
-Move selector lever of S tronic to "N" (Neu­
tral); put manual transmission in Neutral.
- Always let the engine cool down. Hot com­
ponents will burn skin on contact .
- To reduce the risk of being burned, never
open the engine compartment lid 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 engine compartment lid.
- Keep children away from the engine com­
partment .
- Never spill fluids on hot engine compo­
nents. They can cause a fire.
- Never open the coolant reservoir cap when
the engine is still warm . The coolant system
is pressurized and hot coolant 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 electrical
system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open
flames. Fluids in the engine compartment
could start a fire.
- Keep an approved fire extinguisher imme­
diately available .
- To avoid electrical shock and personal injury
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 of S tronic to
"N" (Neutral);
put manual transmission in Neutral.
- Always use extreme caution to prevent
clothing, jewelry, or long hair from getting
caught in the radiator fan, V-belts or other
156
moving parts, or from contacting hot
parts. Tie back hair before starting, and
wear no clothing that will hang or droop into the engine.
- Minimize exposure to emission and chemi­
cal hazards
¢ .&..
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 Cali­
fornia to cause cancer and birth defects and reproductive harm. In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
@ Note
When adding fluids, always make sure that
they are poured into the proper container or
filler opening, otherwise serious damage 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 fluids, have
your vehicle inspected by an authorized Audi
dealer .
· Closing the engine compartment lid
.. Make sure that the rear spoiler is retracted
¢page 138 .
.. Pull the engine compartment lid down until the
pressure from the struts is reduced.
.. Press the engine compartment lid closed
¢ _A . ..,

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 .

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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

..... N
r-­N "': ..... \!) 1.1'1
N 1.1'1 .....
Fuse panel @
No. Con sume r
3 Parking system
4 Engine compartment lid release
Diagnostic interface, light switch, indica-
5 tor l ight
P asse nger A ir Bag OFF , selector
lever
6 Networking gateway
7 Right headlight
Automatically d imm ing inside mirror, ga-
8 rage door opener (Homelink), washer
pump relay, power outlets relay
9 Left headlight
1 0
[!] button
11 Pressure sensor,
climate controls
12 Airbag
Fuse panel @
No. Consumer
1 Radiator
fan (1)
2 Rad
iator fan (2)
3 Exterior lighting
4 Exterior lighting
6 Blower regulator
Fuse pan el @
No. Con sumer
1 Rear view camera
2 Tire pressure monitoring system
4
Cell phone package, telephone antenna
amplifier
5 Instrument cluste r
6 Networking gateway
7 Steering column lever
8
Diagnostic
interface, brake pedal switch,
selector lever
9 Rain/light sensor
10 Light switch
1 1 Special functions contro
l modu le
1 5 Sound amplifier
16 Radio
Fu ses a nd bulb s
Fuse panel @
No . Con sumer
3 Auxiliary water pump
5 Supply terminal
15, starter
6 Pump for brake booster
7 Horn
8 Wiper motor
9 Wiper motor
10 Head light washer system
12 Power
outlets and cigarette lighter
Fuse panel ®
No . Con sumer
1 E lectronic Stabilization Program
2 Electronic Stabilization Program
3 Partition window defogger
4 Rear window defogger
5 Power locking system
6 Inter ior lights, washer nozzles
7 Anti-theft a larm system
8 Climate controls
9 Heated seats
10 Lumbar support
11 Control
module for doors
12 Control module fo r doors
Bulbs
Note
Your vehicle is equipped with maintenance -free
headlights and rear lights . Howeve r, if a bulb has
to be changed, please consult your autho rized
Audi dealer or other qualified workshop.
21 1