2013 AUDI RS5 CABRIOLET radiator

If the engine compartment is cleaned at any
time with grease removing solutions
1>, or if
you have the engine washed, the anti-corro­
sion treatment is almost always removed as
well. It is therefore essential to have a long­
lasting corrosion protection reapplied to all
surfaces , seams, joints and components in the
engine compartment .
.8, WARNING
Be aware: The engine compa rtment of any
motor vehicle is a potentially h azardous
area .
- Before working in the engine compart­
ment, be s ure to read the informat ion
r=;, page207 .
-Before reaching into the front plenum
pane l, always remove the ignition key .
Otherwise, the windshield wiper system
cou ld unintentiona lly be switched on,
poss ibly causing 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 parts
could inju re you .
- Do not clean the underside of the chas­
sis, fenders, wheel covers, or other hard
to reach parts w ithout protecti ng your
hands and arms. You may cut yourse lf on
s harp-edged metal parts .
- Always read and heed all WARN INGS and
othe r information
r=;, page 189.
l ) Use o nly the co rr ect clean in g s olu tio ns. Ne ve r use ga s­
o line or d ie sel fuel.
Cleaning and protec tion 20 1
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208 Check ing and filling
- To reduce the r isk 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 flu ids on hot engine compo­
nents . They can cause a fire.
- Never touch the radiator fan. The auxili­
ary electr ic fan is temperature controlled
and can switch on suddenly.
- Never open the coolant reservoir cap
when the eng ine is still warm . The cool­
ant system is pressur ized and hot coo l­
ant could spray out.
- Protect your face, hands and arm from
steam o r hot eng ine coolant by placing a
thi ck rag over the cap when you open the
coolant reservoir .
- Do not remove the engine cover under
any c ircumstances. Th is increases the
risk of burns.
- If wo rk on the fuel system or the electri­
c al system is necessa ry:
- Always disconnect the battery.
- Never smoke or work near heaters or
open flames . Fluids in the engine com­
pa rtment cou ld start a fire.
- Keep an approved fire extinguisher im­
mediately avai lable.
- To avoid electrical s hock and persona l in ­
jury while the engine is running or being
started, never touch:
- Ignition cables
- Othe r components of the high voltage
e lectronic ignition system.
- If you must perform a check or repa ir
with the engine running:
- First, fully apply the parking bra ke,
move se lector lever o f automat ic trans­
missio n to "P" (Park). -
Always use extreme caution to p revent
clothing, jewel ry, 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 wea r clothing that
will hang o r droop into t he engine.
- Mi nimize exposure to em ission and
chemical hazards~ &.
A WARNING
Ca lifo rnia Proposition 65 Wa rning:
- Eng ine exhaust, some of its const ituents,
and certain vehicle components contain
or emit chemicals know n to the State of
California to cause cancer and birt h de­
fects and reproduc tive harm. In addition,
certain fl uids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and b irth defects or other reproductive harm.
- Battery posts, terminals and related ac­ cessories conta in lead and lead com ·
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive harms. Wash hands afte r handling .
(I) Note
When adding f lu ids, always make sure that
they are poured i nto the proper conta iner
or filler opening, otherwise serious dam­
age to vehicle systems w ill 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 veh icle flu­
i ds, have yo ur vehicle inspected by a n au­
thor ized Audi dea ler.

214 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-basedcoolant additive G13 antifreeze with
anticorrosion add itives (50% for USA models;
60% for Canadian models). This mixtu re both
assures the necessary frost protection 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 cool­
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 antifreeze 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, antifreeze is added at
the factory for temperatures down to:
- -31 ° F ( - 3 S °C) USA
- -40 °F ( - 40 °C) Canada .
_&. WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ~
A in Working in the engine
compartment on page 207.
(D Note
- 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 win­
ter is extremely cold. If necessary, in- crease the
proportion of coolant additive
to 60%.
- When adding coolant additive to your
cooling system, remember:
- We recommend using on ly coolant ad­
ditive G12++ or G13 for your vehicle.
This coolant additive is availab le at au­
thor ized Audi dealers. Other types of
antifreeze can significantly reduce cor­
rosion protection. The resulting corro­
sion cah cause a loss of coolant and se­
rious engine damage.
- Do not add any type of rad iator 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 and
adding coolant
Be very careful when adding engine coolant.
Fig. 180 E n g in e compart men t: Cover on the coo la nt
expansio n tan k
Fig. 181 En g in e compart men t: markings in the coo la n t
expansion tank
ll>

216 Check ing and filling
-If you drain the coolant, it must be
caught and safely stored in a proper con­
tainer clearly marked "poison".
(D Note
-Do not add any type of radiator leak seal­
ant to your vehicle's engine coo lant.
Adding rad iator 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 .
- Coolant pollutes the environment and
could cause an engine fire . Excess cool­
ant wil l be forced out through the pres­
s u re re lief valve in 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
c::> page 214 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.
The radiator fan is dr iven by the engine via the
V-be lt . T he viscous clutch regulates the speed
of the fan accord ing to the temperature o f the
coolant .
A n auxiliary e lectr ic radiator fan* switches on
and off depending on coolant temperature
and other vehi cle operating conditions.
After you switch the engine off, the auxiliary
fan can cont inue runn ing for up to 10 minutes
- even with the ignition off.
It can even sw itch
on again later by itself
c::> .&. , if
- the temperature of the engine coolant rises
due to the heat bu ild-up from the eng ine in
the engine compartment, or -
the engine compa rtment 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
contro lled and can switch on suddenly
even when the engine is not running.
- The auxiliary radiator fan sw itches on au­
tomatically when the engine coo lant
reaches a certain temperature and will
continue to run until the coolant temper ­
ature drops .
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
Fig . 182 Engin e compart men t: Cove r on the b rake flu­
id reservoi r
Before you check anyth ing in the engine com­
partment,
a lwa ys re ad and hee d all WARN­
ING S c::> .&. in Working in the engine compart­
ment on page
207.
~ Read the brake fluid level from the brake
fluid reservoir
c::> fig. 182, c::> page 209,
fig . 177. The brake fluid level must be be­
tween the "MIN" and "MAX" markings .
The brake fluid reservoir is located at the rear
partition of the engine compartment on the
left s ide
c::> page 209.
The fluid level may drop
slightly after some
t ime due to the automatic adjustment of the
brake pads. This is not cause for a larm . .,._

272 Index
Data recorder ..... ..... ... .. .. .... . 176
Date display . .............. ... .. ... . 12
Daytime running lights. . . . . . . . . . . . 52, 53
Declaration of compl iance
Adaptive cruise control . ... .. ... ... . 267
Audi side assist .. ..... ... .. .. .... . 267
Ce ll phone package .. ... .. .. ... ... . 267
Convenience key ..... ..... .... .... . 267
Electronic immobili zer ..... .. .. .. .. . 267
H omelink ® universal remo te control . . 267
Remote control key ........... .. .. . 267
Defective light bulb warning . . . . . . . . . . . 2 1
Defrosting (w indows) ..... .. .. .. .. .. .. 71
Determin ing correct load limit . .. .. ... 230
D igita l clock ............. ... .. .... .. 12
Dig ita l compass ............ ... .. .. .. 59
Dimensions .. ............... .. .... . 262
D imm ing the rea rview mir ro r .. .. .. .. . . 56
Doors emergency lock ing . ..... .. .. .. .. .. .. 36
Driver information system Eng ine oil temperature indicator ...... 28
Open door or front lid warning . . . . . . . . 24
Outside temperature display .. .... .. .. 24
Sound system display . . . . . . . . . . . . . . . 24
Driver seat
refer to Seat ing pos ition . . . . . . . . . . . . 119
Driving safely ............. .. .. .. .. . 118
Driving through water . . . . . . . . . . . . . . . 184
Driving time . . . . . . . . . . . . . . . . . . . . . . . . 25
Dust filter
refer to Po llutant filte r (automatic AC
sys tem) .. .. ............. .. .. .... .. 69
Dynamic steering . . . . . . . . . . . . . . 104 , 180
E
Easy entry function ......... .. .. .. .. .. 63
Electro -mechanical power assist . . . . . . . 180
Electromechanical park ing brake
E me rgency braking ....... .. .. .. .. . . 81
I ndicator ligh t . . . . . . . . . . . . . . . . . . . . . 79
Par king .. .. .. . .......... .. .. .. .. .. 80
Releasing and clos ing ... .. .. .... .. . . 79
Starting assist . .. ..... ... .. .. .... .. 80
Starting from rest ..... ... .. .. .... .. 80
Warn ing/ indicator lights ..... .. .... .. 16 El
ectronic differential lock ( EDL) . . . . . . . 176
Warning/indicator lights ..... ... .. .. . 19
El ectronic immob ilizer . . . . . . . . . . . . 12, 3 7
Electronic power control (EPC) warning/indicator light . . . . . . . . . 20
E lectronic Stabilization Contro l (ESC) . .. 176
Warning/indicator lights ..... ... .. .. . 19
E mergen cy actua tion
Doors .. .. .. .. .. .. ........... .. .. . 36
Ignit ion key ..... ... .. ..... .... . .. . 34
Emergency brak ing .... .. .. ... ..... .. . 81
Emergency flasher . . . . . . . . . . . . . . . . . . . 54
Warning/ind icator lights ........ .. .. . 22
E mergency key . . . . . . . . . . . . . . . . . . . . . . 32
Starting engine . ... ... ..... ... .. .. . 76
Emergency operation Emergency bra king funct ion (pa rking
brake) .. .. .. .. .. .. ... ........ .. .. . 81
Luggage compartment lid . . . . . . . . . . . . 38
Power top ..... .. .. ... ..... ... .. .. . 47
Emergency starting ................ . 255
Emergency towing . ............. .... 257
E nergy management ............ .. .. 182
Battery power . . . . . . . . . . . . . . . . . . . . . 17
Drive r notif ication . . . . . . . . . . . . . . . . . . 17
Engine Compartment .. .. ... .......... .. .. 209
Coolant . .. .. .. .. ............. .. .. 214
Hood . .... .... ................... 207
Starting . . . . . . . . . . . . . . . . . . . . . . 7 4 , 77
Starting with jumper cables ... .. .. .. 255
Stopping . . . . . . . . . . . . . . . . . . . . . . 76, 78
E ngine compartment
Sa fety instr uctions ............. .... 207
Working the eng ine compartment 207
Engine coolant In dicator light ... ............. .... . 18
Engine coolant system ........... .... 214
Adding coolant ..... ... ..... ... .. .. 214
Checking coolant level .............. 214
Checking the engine coo lant level . .. .. 214
Radiator fan . .. .. ............. .. .. 216
Engine coolant temperature Temperature gauge .............. .. . 10
Engine data ..... .. .. ... ..... ... .. .. 263

Engine hood
C losing .... .... .. .... ... .. .. .. ... 207
H ow to release the hood ... .. .. .. .. . 207
E ng ine oil . .. ............. .. .. .. ... 209
Adding .. .. .. ........... .. .. .. ... 212
Addit ives ... .... .. .... ... .. .. .. ... 212
C hanging . ... .... .... ... .. .. .. ... 213
Chec koil leve l .. ...... ... .. .. .. ... 212
Consumpt ion ............ .... .. ... 212
Indicator light ........... .... .. 17,21
O il consumption ............. .... .. 211
O il grades .. ... .. .. ...... .. .. .. .. . 209
O il level symbol ............. ... ... . 21
Pr essu re malfunction ...... .. .. .. .. .. 17
Sensor defective . . . . . . . . . . . . . . . . . . . . 2 1
Specific ation and viscos ity . ... .. .. .. . 209
temperature indicator . . . . . . . . . . . . . . . 28
E ng ine speed limitat ion ........ .. .... . 21
E nvironment
Break- in period ........... .... .. .. . 184
Catalytic converter . . . . . . . . . . . . . . . . . 185
D isposing of your vehicle batte ry ... .. 221
Driving at h igh spe eds ........ .... .. 187
Dr iving to m inim ize pollu tion and no ise 186
Fu el ... .. .. .... ............. .. .. . 204
Fu el economy ............ .. .. .. .. . 186
L eaks under your veh icle ... .. .. .. .. . 20 7
L etting the ve hicle stand and warm up . 187
Prope r disposal of dra ined brake fluid . 2 17
Prope r disposal of drained engine coo l-
ant . .. ... . .... ............. .. .. . 214
Proper disposal of dra ined engine
oil ...... ... ...... .......... 212,213
R ecycl ing used engine oil . ......... .. 212
Un leaded f uel ............ .... .. .. . 20 2
Wha t should I do wi th an old ba ttery? . 22 1
EPC
refer to Electronic power control . . . . . . 20
ESC (Electronic Stabilization Cont rol)
Warn ing/ indicator lights ... .. .. .. .. .. 19
E vent Data Recorder ( EDR) ... .. .. .. .. . 176
Exhaust tail p ipes
C lean ing . ..... ........... ... ... .. 196
Expansion tank ............ .... .. ... 214
E xterio r ligh ting . . . . . . . . . . . . . . . . . . . . . 52
Inde x 273
Exterior m irrors
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . 55
D imm ing . ... .. .. .. . .. ... .... ... .. . 56
Heating ... .. .. .. ................. . 55
F
Fan
Radiator
Fasten ing
B oos ter sea ts . ... .. . .. ... .... ... . .
Co nvertib le child sa fety seats . ... .. . .
Infant seats ..... ... .. .. ..... ... . .
Flat tire 216
166
165
164
Changi ng ... .. ...... ............. 245
Floor mats .. .. .. .. .... ... .... .... .. 123
Fog lights ( rear) ..... . .. .. ..... ... .. . 52
Fo lding the rea r seats . ... .. ..... ..... . 67
Foot pedals . .. .. .. .. .. ........... .. 123
Fo r the sake of the envi ronmen t
Gasoline fumes and the env ironment . . 204
Letting the engine warm up . . . . . . 74 , 77
Ref ueling ... .. ...... ............. 204
Saving f uel by early upsh ifting ... .. .. . 11
Fron t air bags
Description . ... .... . ... ...... ... .. 14 1
How they work ..... . .. .. ..... ... .. 146
Frontal coll is io ns and the laws of p hys ics 130
Front passenger's door emergency lock ing 36
Fron t seats
Adjusting ... .. .... . ... ...... ... .. 120
Child restraints in the front seat . ... .. 138
Upper cabin heating . ........... .... . 72
Fuel Additives . ... .. .... .. .. ...... ... .. 20 2
B lended gaso line ... . .. .. ..... ... .. 202
Consumption ...... . .. .. ..... ... .. . 25
Filler neck ... .. ...... ............. 203
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline .. .. .. .. ................. 202
Gasoline addit ives .. ... ....... .... . 203
Low fuel level symbol . . . . . . . . . . . . . . . 21
Octane rat ing .. .. .. . ....... ..... .. 202
Recommendat ion . ............. .. .. 202
Ref uell ing ... .. .... ... .......... .. 2 04
Rese rve ... .. .... .. . .. .. ..... ... .. . 12
Tank capac ity .... .. . .. .. ..... ... .. 263
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Power windows . . . . . . . . . . . . . . . . . . . . . . 39
M alfunctions ............ .. .. .. .... 40
Pr egnant wome n
Special considerations when weari ng a
safety belt . . . . . . . . . . . . . . . . . . . . . . . 134
Proper occupa nt seat ing posit ions ..... 119
Proper safety belt position . . . . . . . . . . . . 134
Prop er seat ing position
Front passenger .......... .... .. .. . 120
Occupants .. .. ........... .. .. .. ... 119
Rear passengers ............ .. .. ... 121
Q
Qua rtz clock . ............. .... .. .. .. 12
q uattro ®
refer to all-wheel dr ive .... .. .. .. .. . 18 1
Question What happens to unbelted occupants? 130
Why safety belts? . . . . . . . . . . . . . . . . . 129
R
Radiator fan
216
R ain /light sensor
H eadlights . . . . . . . . . . . . . . . . . . . . . . . . 52
I ntermittent (windshield wipers) . ... .. 57
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Reading lights ............. .... .. .. .. 55
Rear fog lights . . . . . . . . . . . . . . . . . . . . . . 52
Rear lid
Escape hand le . .......... .. .. .. .... 38
Opening and closing ............ .. .. 37
R ear light
Defective . . . . . . . . . . . . . . . . . . . . . . . . . 21
Rear view camera Parking mode 1 ........... ... ... .. 11 1
P ark ing mode 2 ....... ... .. .. .. .. . 112
Rear view mirror . . . . . . . . . . . . . . . . . . . . . 56
Rear window heating ....... .. .. .. .. .. 71
Recirculation mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Refuelling . .. ............. .... .. .. . 204
Release lever for hood ........ .. .. .. . 207
Remote control
H omelink . . . . . . . . . . . . . . . . . . . . . . . . 114
Index 277
Remote control key . . . . . . . . . . . . . . . . . . . 32
Personalizing .. .... . ............ .. . 32
un locking/loc king .. . .. ........ .. .. . 34
Remote rear lid release .......... .. .. . 37
Repair ma nuals .. .. .. . ... ...... ... .. 264
Repairs Airbag system ... .. . .......... .. .. 150
Replacement key . . . . . . . . . . . . . . . . . . . . 32
Rep lacing bulbs . .. .... ............. 254
Replacing tires and wheels ........ .. .. 234
Replacing wiper blades ............. .. 58
Reporting Sa fety Defects ............. 126
Reset button . . . . . . . . . . . . . . . . . . . . . . . . 12
Retractor ......... .. ............... 133
Right hand drive . . . . . . . . . . . . . . . . . . . . . 54
Rims Cast alloy ..... ...... ............. 195
Rollbar
refer to Active rollover protection sys-
tem ......... ... .. ..... .......... 127
s
SAFE .. .. .. .. .. .. .. .. ... ...... .... . 12
Safe driving habits ... . .. ........ .. .. 118
Safety belt position .. . .. .. ..... ..... 134
Safety belts wo rn by pregnant women . 134
Safety be lt pretensioner ............ .. 135
Serv ice and disposal .............. . 136
Safety belts ... .... .. . .. .......... .. 132
Be lt positioner . ...... ............. 132
Cleaning .. .. .. .. ... ............ .. 200
Danger to passengers who do not wear a
safety belt .. .. .... .......... ..... 130
Fastening ... .. .... .......... ..... 133
Improperly worn ................. . 135
Not worn ... .. .. ... ............ .. 130
Safety belt position ... ......... .. .. 134
Safety instructions . ... ......... .. .. 132
Securing child safety seats .......... 168
Specia l considerations for pregnant
women ..... .. ...... ............. 134
Unf astening ... .. ... ............ .. 135
Warning/indicator light ........... .. 129
Warning light . . . . . . . . . . . . . . . . . . . . . . 17
WhyYOUMUSTwearthem ......... . 129
Worn proper ly . . . . . . . . . . . . . . . . . . . . 131
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