engine coolant AUDI RS5 CABRIOLET 2015 User Guide

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pressure relie f 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
sca lding from hot coolant by following
these steps .
- T urn off the engine and a llow it to cool
down.
- Protect your face, hands and arms from
escap ing flu id and steam by cover ing
the cap with a large, thick rag.
- Tu rn the cap slowly and very ca refully
in a counte r-clockw ise d irection while
applying light, downward p ress ure on
the top of the cap.
- To avo id being burned, do not sp ill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts. Under certain
conditions, the ethylene glyco l in en­
g ine coolant can catch f ire.
- Antifreeze is poisonous. Always store an­
t ifreeze in its or iginal container and we ll
out of the reach of children.
- If you drain the coolant, it must be
caught and safely stored in a proper con­
tainer clear ly marked "poison".
Q) Note
- Do not add any type of radiator leak sea l­
ant to your veh icle's engine coolant.
Adding rad iator repair fluid may adverse­
l y affect the function and performance of
you r cooling system and could result in
damage not covered by your New Vehicle Limited Wa rra nty.
- Coolant pollutes the env ironment and
could cause an engine fire. Excess coo l­
ant w ill be forced ou t through the pres­
su re re lief va lve in the cap when the en­
gine becomes hot .
- If, in an emergency, only water can be
added, t he cor rect ratio between wate r
and an tifreeze<=> page 201 must be re ­
stored as soon as possib le .
Checkin g and fillin g 203
'
@) For the sake of the environment
Drained coolant sho uld not be reused. A l­
ways d ispose of used coolant while observ­
i ng a ll environmental regulations.
Radiator fan
The radiator fan switches on automatically by
itself .
T he radiator fan is dr iven by the engine via the
V-belt. The viscous clutch regulates the speed
of the fan according to the temperature of the coolant.
An a uxiliary electric radiator fan* switches on
and off depending on coolant temperature
and othe r vehicle ope rat ing cond it ions.
After yo u switch the eng ine off, the aux iliary
f an can continue running for up to 10 m inutes
- even with the ignition off. It can even switch
on again later by itself<=>.&. , if
- t he temperatu re of the engine coo lant rises
due to the heat build -up from the engine in
the engine compa rtment, or
- the engine compa rtment heats up because
the vehicle is parked in intense sunlight.
A WARNING
=
- To reduce the risk of personal inju ry nev-
er touch the radiator fan.
- The a uxiliary electric fan is tempe rat ure
contro lled and can switch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan switches on a u­
tomatically when the engine coo lant
reaches a certain temperature and will
continue to run until the coo lant temper­
ature drops.
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26 6 Con sum er Inf ormation
-Always make sure the transmission se­
lector lever (automatic transmiss ion) is
in "P" (Park position) and the park brake
is f irmly app lied .
@) For the sake of the environment
-Changing the engine settings wi ll ad­
versely affect em iss ion levels. This is det­
rimental to the environment and increas­
es fuel consumption .
- Always observe env ironmental regula­
tions when dispos ing of old engine oil,
used brake fluid, dirty engine coolant,
spent batteries or worn out tires.
- Undeployed airbag modules and preten­
s ioners might be classified as Perchlo ­
rate Material -spec ial handling may ap­
ply, see www.dtsc.ca .gov/hazardous­
waste/perch lorate . When the veh icle or
parts of the restraint system including
airbag modules safety belts wit h preten ­
sioners are scrapped, all applicable laws
and regulations must be observed. Your
authori zed Aud i dea ler is familiar with
these requirements and we recommend
that you have your dealer perform this
serv ice for you .
Additional accessories,
modifications and
parts replacement
Additional accessories and parts
replacement
Always consult an authorized Audi dealer be­
fore purchasing accessories.
Your veh icle incorporates the latest safety de­
sig n featu res ensu ring a high standard of ac­
tive and passive safety .
This safety could be compromised by non-ap­ proved changes to the veh icle. For this reason ,
if pa rts have to be replaced , please observe
the following points when install ing addition­
a l accessories: Approved Audi accessories and genuine Aud
i
parts are available from authorized A udi deal­
er.
T hese dea le rs a lso have the necessary facili­
ties, tools and trained specialists to install the parts and acc essories proper ly .
A WARNING
-Using the wrong spare parts or using non-
approved accessories can cause damage to
the veh icle and ser ious persona l injury.
- Use on ly accessories express ly approved
by Audi and gen uine Audi spare parts
- These parts and accessories have been
specia lly designed to be used on yo ur ve­
h icle .
- Never install accessor ies such as tele­
phone crad les or beverage ho lders on a ir­
bag covers or within the airbag deploy­
ment zones . Do ing so will increase the
risk of injury if a irbags are triggered in an
accident!
- Before you check anything in the engine
compa rtment, always read and heed a ll
WARNI NGS
9 page 195 .
(D Note
-If items other than genu ine Audi spare
parts, add-on equipment and accessory
items are used or if repair work is not
performed accord ing to specified meth­
ods, this c an resu lt in seve re damage to
your vehicle's eng ine and body (such as
corrosion) and adversely affect yo ur vehi ­
cle's warranty .
- If emergency repairs must be performed
elsewhere, have the vehicle examined by
an authorized A udi dealer as soon as
possible .
- The manufacturer cannot be held liable
for damage wh ich occ urs due to failure
to comply with these stipu lations.

270 Index
Automatic climate control Air vents ... ............... .. .... .. 71
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 70
Setup . .. ............... .. .. .... .. 72
Automatic power top ....... .. .. .... .. 43
Automatic transmission . . . . . . . . . . . . . . . 83
Emergency release . . . . . . . . . . . . . . . . . . 89
Removal lock (ignition key) . .. .. .. .. . . 73
also refer to S tron ic transmission ..... 83
Au tomatic wipers . . . . . . . . . . . . . . . . . . . . 56
Auto Safety Hotline ................ . 120
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damaging the vehicle .. .. .. .. .. . 179
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 16, 205
Battery location inside the luggage com-
partment .. .. . .......... .. .. .... . 205
Charging . .. ............... .. .... . 207
Important warnings when working on
the battery .... ... ... .... .. .. .. .. . 205
Jump starting ............. ... .. ... 255
L ow . .. .. .... ........... .... .... . 177
Rep lacing the battery ..... .. .. .... . 208
State of charge ............ ... .... . 177
Winter operation .......... ... .... . 205
Working on the battery ..... ... .... . 205
Before driving ............. .. .. .. .. . 112
Belt posi tioner ............ .. .. .. .. . 126
Blended gasoline .............. .... . 190
Blower (automatic climate control) . . . . . . 71
Booster seats ............. .. .. .. .. . 160
Brake fluid Changing the brake fluid ......... .. . 204
Checking the brake fluid level ..... ... 204
Reservoir . ................. ..... . 204
What is the correct brake fluid level? . . 204
What should I do if the brake fluid warn-
ing light comes on? ......... .. .... . 204
Brake system ............... ... .... . 204
Anti-lock braking system . . . . . . . . . . . . . 19
Brake assist system ....... .. .. .... . 171
Brake fluid ................ .. .... . 204
Brake fluid specifications for refill and re­
placement . . . . . . . . . . . . . . . . . . . . . . . 204
Brake light defective .......... .. .... 21
Brake power assist unit .. .. .. .. .. .. . 174 Brakes ...
..... .. ............. .... 174
Ceramic brakes ... ................ . 174
Electromechanical parking brake ...... 78
Warning/indicator lights ........ .... . lS
Worn brake pads symbol . . . . . . . . . . . . . 20
Braking Emergency braking function ....... .. . 79
braking guard . .. .. ... .......... .. .. . 90
Messages . .... .. ............. .... . 97
Settings .. .. .. . .............. .. .. . 97
Break-in per iod .. .. .......... ...... . 179
Tires . ........ .. .. ........ ...... . 179
Bulbs .. .... .... ................... 253
C
California Proposition 65 Warning ..... 196
Battery specific . ................. . 206
Capacities .. .. .. . .............. .. .. 262
Carbon parts Cleaning . . . . . . . . . . . . . . . . . . . . 186, 187
Care ........... .. .. .............. . 184
Cargo area
refer to L uggage compartment. . . 66, 118
Catalytic converter . . . . . . . . . . . . . . . . . . 180
Center armrest . . . . . . . . . . . . . . . . . . . . . . 63
Central locking .. .. ................ .. 30
Central lock ing switch .......... .... . 34
Convenience key . . . . . . . . . . . . . . . . . . . . 34
Remote control key ................. 33
Ceramic brake rotors New brake pads .. ................ . 17 4
Certification .... .. ............. .... 267
Changing a flat tir e . ... .......... .. .. 244
Changing a wheel .. ................ . 244
Changing engine oil ............. .... 200
Checking Engine coolant level ............ .. .. 202
Checking tire pressure ..... ...... .. .. 221
Child restraints Danger of using child restraints in the
front seat . .... ... .............. .. 132
Where can I get addi tional information
about child restraints and their use? .. 169
Child restraint system anchors ..... ... 166

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Child safety . ... .... .... ... .. .. .. ... 152
Convertible locking retractor . ... .. .. . 162
Important safety instructions for using
chi ld safety seats .................. 155
Important things to know when driv ing
with children ..................... 152
Instal ling a child restraint us ing the
L ATC H system ................... .. 168
L ower ancho rages ........ .. .. .. .. . 167
M ounti ng and releas ing the ancho rage
hook . ..... .. .. ... ..... ... .. .. ... 168
Ch ild safety seats .... ... ... .. .. .. .. . 158
Booste r seats ..................... 160
Conve rtible c hild seats ............. 159
Conver tible locking retrac tor .. .. .. .. . 16 2
D anger o f using c hild restra ints in the
fro nt sea t . . . . . . . . . . . . . . . . . . . . . . . . 132
H ow do I properly install a child safety
seat in my vehicle? ........ .. .. .. .. . 155
Infant seats . . . . . . . . . . . . . . . . . . . . . . 158
Install ing .. ............. .... .. ... 162
LATCH system ................... .. 168
Safety instructions . ......... .. .. .. . 155
Unused safety belts on the rear seat .. 157
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . 65
Cle aning .......................... 184
Climate controls . . . . . . . . . . . . . . . . . . . . . 69
Climate control system Automatic recirculation . . . . . . . . . . . . . . 72
synchron iz ing ............ .... .. .... 72
Clock ..... .. .. ... .. ..... ... .. .. .... 12
Closing Powe r windows . . . . . . . . . . . . . . . . . . . . 38
C losing/opening
at t he lock cylinder ........ .. .. .. .. .. 35
by remote contro l ..... ..... .. .. .. .. 33
with the cen tral locking switch . . . . . . . . 34
with the convenience key . . . . . . . . . . . . . 34
Cold tire inflat ion pressure ... .. .. .. .. . 217
Com ing home ............. .... .. .. .. 52
Compass in the mirror ................ 58
Compliance . ... ... ..... ... .. .. .. ... 267
Consume r In fo rmat ion . . . . . . . . . . 120, 264
Contact ing N HTSA .................. 120
Controls Cleaning ... .. .... .... ... .. .. .. ... 187
Inde x 271
Convenience key
Indicator lights .. .. . ... .... ... .. .. . 77
Starting engine (START EN GINE STOP
button) ... .. .. .. ................. . 76
Stopping the engine (START ENGINE
S TOP button) . . . . . . . . . . . . . . . . . . . . . . 77
Switch ing on ignit ion ... .. ... ..... .. . 76
u nlocking/locking .................. 34
Convenience opening/clos ing
C onvertib le child sa fe ty se ats
Convertib le locking retractor 39
159
Activati ng .............. .......... 164
Deact ivat ing . .. .. .... ........... .. 164
U si ng to secu re a child safety seat 1.6 2, 16 4
Coolant system .. .. ............... .. 201
Cooling mode (automatic climate control) 70
Cooling System Expansion tank . .. ................. 202
Cornering light .. .. ................. . 51
Cruise cont ro l
Changi ng speed .... . .. ..... ... .. .. . 82
Presetting your speed ... .... ... .. .. . 82
Switching off .. .. .... ............. . 82
Swit ching on . .. .. .. ............... . 81
Cruising range . . . . . . . . . . . . . . . . . . . . . . . 24
(upholder .. .. .. .. .. . .. .... ...... .. . 65
D
Data recorder . . . . . . . . . . . . . . . . . . . . . . 170
Date disp lay . ... .... . ... ...... ... .. . 12
Dayt ime runn ing lights . . . . . . . . . . . . 51, 52
Declarat ion of compliance
Adaptive cruise control ............. 267
Audi side ass ist .. .. . .. .. ... ..... .. 267
Cell phone package ................ 267
Convenience key ................... 267
El ectronic immob ilizer . ......... .. .. 267
Homeli nk unive rsal remote con trol . .. 267
Remote con tro l key .. .. ..... ... .. .. 267
Decorat ive pa rts/tr im
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 186
Defective light bu lb warning ........... 21
Defrost ing (windows) ............ .... . 71
Determ ining correct load limit ....... . 226
Digital cloc k . . . . . . . . . . . . . . . . . . . . . . . . 12
Digi tal compass . . . . . . . . . . . . . . . . . . . . . 58
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272 Index
Dimensions ....... ..... ... .. .. .... . 262
Dimming the rea rview mirror .. .. .. .... 55
Disp lays
Cleaning . ...... ..... ...... .. .. .. . 187
Doors emergency locking ..... ... .. .. .... .. 35
Driver information system Eng ine oi l temperature indicator .... .. 26
Open doo r or front lid warning . . . . . . . . 23
Outside temperature display . ....... . . 23
Sound system display . . . . . . . . . . . . . . . 23
Driver seat
refer to Seat ing pos ition . .. .. .. .. .. . 113
Driving safely . . . . . . . . . . . . . . . . . . . . . . 112
D riving through water . ... .. .. .. .. ... 179
Driving t ime . . . . . . . . . . . . . . . . . . . . . . . . 24
Dust filter
refer to Pollutant filter (automatic A/C
system) .. ... ............ .. .. .. .. .. 69
Dynamic stee ring . . . . . . . . . . . . . . 102, 175
E
Easy entry function ................... 62
El ectro -mechanical power assist .. .... . 17 5
Electromechanica l parking brake
Eme rgency braking . . . . . . . . . . . . . . . . . 79
Indicator ligh t . . . . . . . . . . . . . . . . . . . . . 78
Park ing .. ................. .. .... .. 79
Releasing and closing ...... .... ... .. 78
Starting ass ist ........ .... .... ... .. 79
Starting from rest ......... ... .. .... 79
War ning/ indicato r lights ... .. .. .. .. . . 16
Electronic different ial lock
Warn ing/ indicato r lights ... .. .. .. .. . . 18
Electronic differential lock (EDL) . . . . . . . 171
Warning/indicator lights ... .. .. .. .. . . 1 9
E lect ronic immobilize r . . . . . . . . . . . . 12, 36
Elec tronic power co ntrol
(EPC) warn ing/ indicator light ... .. .... 20
Electronic stabilization control Sport mode . . . . . . . . . . . . . . . . . . . . . . 173
E lectronic Stabilization Control ( ESC) ... 171
Warn ing/ indicator lights ... .. .. .... . . 18
Emergency actuation Doors ..... .......... ........... .. 35
I gnition key ....................... 33 E
mergency brak ing .... .. ..... .... . .. . 79
E mergency flasher . . . . . . . . . . . . . . . . . . . 53
Warning/ind icator lights ........ .... . 22
Emergency key . . . . . . . . . . . . . . . . . . . . . . 31
Starting engine .. .......... ...... .. 7S
Emergency operation Emergency brak ing f unction (parking
brake) .... .... .. ............. .... . 79
Luggage compartment lid ............ 37
Power top ..... .. ... .......... .. .. . 47
Emergency starting . ..... .... ... .. .. 255
Emergency towing ........... ....... 257
Energy management . ........... .. .. 177
Battery power . . . . . . . . . . . . . . . . . . . . . 16
Driver notification .................. 16
Engine Compartment .... ... .. ..... .... . .. 197
Coolant ... .. .. .. .. ........... .... 201
Data . .... .... .. ............. .... 263
Hood ...... ... ... ............... . 19S
Starting . . . . . . . . . . . . . . . . . . . . . . 73, 76
Starting with jumper cables ......... 255
Stopp ing . . . . . . . . . . . . . . . . . . . . . . 75, 7 7 Engine compartment
Safety instructions .......... .... ... 195
Working the eng ine compartment 195
Engine coolant Indicator light .... .............. .. . 17
E ngine coolant system ........... .. .. 201
Adding coolant ... .. .... .... ... .. .. 202
Checking coolant level .. ..... ... .. .. 202
Checking the engine coolant level ... .. 202
Radiator fan ... .. ............. .... 203
En gine coolant temperatu re
T emperature gauge .. .. ..... ... .. .. . 10
Engine hood Closing ......... .. .............. . 195
How to re lease the hood ........ .. .. 195
Engine oil .. .. .. .. ............. .. .. 197
Adding ..... .. .. .. ... ....... ... .. 199
Additives ........ ................. 199
Changi ng ..... ............ ....... 200
Check oil level . .. ... .......... .. .. 199
Consumption .. .. ............. .. .. 199
Indicator light . . . . . . . . . . . . . . . . . 17 , 21
Oil consumption .. ... .. ..... ... .. .. 198
Oil grades ..... .. ... .. ..... ... ... . 197

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Pressure malfunction ... ... .. .. .. .. .. 17
Sensor defective . . . . . . . . . . . . . . . . . . . . 21
Specif ication and viscos ity . ... .. .. .. . 197
temperature indicator . . . . . . . . . . . . . . . 26
E ng ine speed limitat io n ..... .. .. .. .. .. 20
Env ironment
Break- in pe riod .............. ... ... 179
Cata lytic converter ........ .. .. .. .. . 180
D isposing of yo ur vehicle ba tte ry .. .. . 208
D riving a t high speeds ..... .. .. .. .. . 182
D riving to m inimi ze pollution and no ise 18 1
Fu el . .... .. ... .. .. ..... ... .. .. ... 192
F ue l economy ..... .... ... .. .. .. ... 181
Leaks under your veh icle ... .. .. .. .. . 195
Lett ing the ve hicle stand and warm up . 182
Proper disposal of drained brake flu id . 204
Prope r disposal of dra ined engine coo l-
ant ...... ... ................ .... 202
Pr ope r disposal of dra ined engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 199, 200
Recy cling use d engine oil ... .. .. .. .. . 199
Un leaded f uel ... ...... ... .. .. .. ... 190
What should I do with an old battery? . 208
E PC
refer to Electronic powe r control . . . . . . 20
Event Data Recorder (EDR) . .. .. .. .. .. . 170
Ex haust tail pipes
C leaning ... .... .. .... ... .. .. .. ... 186
E xpansion ta nk ............ .. .. .. .. . 20 2
Exterior lighting . . . . . . . . . . . . . . . . . . . . . 51
E xterio r mirrors
Ad justing .. ... .. ..... ... .. .. .. .... 54
Dimm ing ... .. .. .. .... ... .. .. .... .. 55
Heating .. .. ............. .... .. .... 54
F
Fan
Radiator
F asten ing 203
B ooste r seats ............ .. .. .. .. . 160
Conve rtible c hild safety seats ... .. .. . 159
Infant seats 158
Fl at t ire
C hanging .. ............. .... .. ... 2 44
F loor mats . . . . . . . . . . . . . . . . . . . . . . . . . 117
F oglights(rea r) . ....... ... .. .. .. .. .. 51
F oldi ng the rear seats . . . . . . . . . . . . . . . . . 66
Inde x 273
Foot peda ls . . . . . . . . . . . . . . . . . . . . . . . . 117
Fo r th e sake of the environment
Gasoline fumes and t he env ironme nt .. 192
L etting the engine wa rm up . . . . . . 73, 76
Ref ueling . .. .. .. ................. 192
Saving f uel by early upsh ifting ... .. .. . 11
Fron t air bags
Desc ription .. .. .. ... .. .......... .. 135
H ow they wor k ....... ......... .... 140
Frontal coll is ions and the laws of p hysics 124
Front passenger's door emergency loc king 35
Front seats Adjus ting . . . . . . . . . . . . . . . . . . . . . . . . 114
Child rest rain ts in the fron t sea t .. .. .. 132
Up per cabin heati ng ... .. ...... ... .. . 72
Fuel Additives ........ .. ............... 190
Bl ended gaso line . ................. 190
Co nsu mp tion .. .. .... ......... .. .. . 24
F iller neck ... .. .. .. . .. ... .... ... .. 191
Fuel ga uge . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline . ... .... ... .. .. ..... ... .. 190
Gasoline addit ives .. ........... .... 191
Low fue l level symbol .......... .. .. . 21
Octane rat ing .. .. ................. 190
Recommendation ........ ......... . 190
Ref uell ing ... .. .. .. . .. .... .... .. .. 192
Rese rve ...... ... .. ................ 12
T ank capa city .. .. .... ............. 262
T ank sys tem . .. .. ............. .... . 21
U nlocking the fuel fi lle r flap by hand 193
Fuel filler flap Unl ocking the fuel fi lle r flap by hand 193
Fuses Ass ignment . . . . . . . . . . . . . . . . . 250, 252
Replacing ... .. .. .. . .. .... .... .. .. 250
G
Garage door opener (Home link) ..... .. . 40
Gas d ischa rge lamps ............... .. 253
Gauges Engine coolant temperatu re . . . . . . . . . . 10
Fuel ga uge . . . . . . . . . . . . . . . . . . . . . . . . 12
T acho meter . .. .. ................. . 11
General illustration Instruments and controls ............. 8
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