radiator AUDI RS5 CABRIOLET 2013 User Guide

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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