2012 AUDI A5 COUPE radiator

When the engine is warm, the level may be
slightly above the
"MAX" marking.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration ¢ page 239.
To obtain an accurate reading, the engine must be switched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System ¢page
31 will
blink until you add coolant and the level has
been restored to normal. Even though there is
an electric coolant level sensor, we still rec­
ommend you check the coolant level from
time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized Audi dealer.
It is not
enough merely to add coolant.
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
& WARNING
The cooling system is under pressure and
can get very hot. Reduce the risk of scald­
ing 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.
- Turn the cap slowly and very carefully in
a counter-clockwise direction while ap­
plying light, downward pressure on the
top of the cap.
- To avoid being burned, do not spill anti­ freeze or coolant on the exhaust system or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­
ant can catch fire.
Checking and filling 245
@ Note
Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant. Add­
ing radiator repair fluid may adversely af­
fect the function and performance of your
cooling system and could result in damage not covered by your New Vehicle limited
Warranty.
Adding coolant
Be very careful when adding engine coolant.
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 23
7.
.,. Turn off the engine .
.,. let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank ¢ page
244, fig . 206 and carefully turn
the cap counter-clockwise ¢
&_.
.,. Add coolant.
.. Twist the cap on again tightly.
Replacement engine coolant must conform to
exact specifications ¢ page
244, Coolant.
Even in an emergency, if coolant addi-
tive G12++, G12+ or G12 is
not available, do
not use a different additive. Use plain water
instead until you can get the correct additive
and can restore the correct ratio. This should
be done as soon as possible.
If you have lost a considerable amount of
coolant , then you should add cold antifreeze
and cold water only when the engine is cold.
Always use new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Ex­
cess coolant will be forced out through the pressure relief 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 ...,
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246 Checking and filling
sca lding 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 flu id and steam by cover ing
the cap with a large, thick rag.
- Turn the cap slowly and very carefully
in a counter-clockwise direction while
applying lig ht, downwa rd pressure on
the top of the cap.
- To avo id being burned, do not spill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts . Under certain
conditions, the ethylene glyco l in en­
gine coolant can catch f ire.
- Antifreeze is poisonous . Always store an­
tifreeze 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".
@ Note
- Coolant pollutes the environment and
could cause an engine fire . Excess coo l­
ant will be forced out through the pres­
sure relief valve in the cap when the en­
gine becomes hot.
- If, in an emergency, only water can be
added, the correct ratio between water
and antifreeze
c::> page 244 must be re­
stored as soon as possible .
@ For the sake of the environment
Drained 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
T he radiator fan is driven by the engine via the
V-belt . The viscous clutch regulates the speed
of the fan according to the temperature of the
coolant. An auxiliary electric
radiator fan* switches on
and off depend ing on coolant temperature
and other vehicle operat ing condit ions .
After yo u sw itch the engine off, the auxiliary
f an can continue running for up to 10 minutes
- even with the ignit ion off. It can even switch
on again later by itself
c::> &., if
- the temperature of the engine coolant rises
due to the heat build-up from the engine in
the engine compartment, or
- the engine compa rtment heats up because
the vehicle is parked in i ntense sunlight.
_& WARNING
- To reduce the risk of personal injury nev­
er touch the radiator fan.
- The auxiliary electric fan is temperature
controlled and can sw itch on suddenly
even when the engine is not running.
- The auxiliary radiator fan switches 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. 207 E ngin e compart men t: B rak e fluid rese rvoir
Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS c::> A in Working in the engine compart-
ment on p~e 237.
~

302 Index
Efficiency program . . . . . . . . . . . . . . . . . . . 24
Fuel economy messages . . . . . . . . . . . . . 26
Memory leve ls . . . . . . . . . . . . . . . . . . . . . 23
Other equipment . . . . . . . . . . . . . . . . . . . 25
Shift indicator . . . . . . . . . . . . . . . . . . . . . 25
Electrical seat adjustment
refer to Seat adjustment ........... . . 63
E lectromechan ical park ing brake
E mergency braking . . . . . . . . . . . . . . . . . 98
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 99
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 96
Parking .... ................ ..... .. 97
Releasing and closing ............. . . 96
Starting assist ........... .. .. .. .. .. 98
Starting from rest .......... .. .... .. 98
Starting off with a trailer . . . . . . . . . . . . . 98
Warning/ indicator lights .... ..... .. .. 17
Electronic differential lock (EDL) How the system works ....... .. .... . 205
Warning/indicator lights ... .. .. .. .. . . 16
Electronic immobilizer . . . . . . . . . . . . . . . . 39
Electronic power control
(EPC) warn ing/ indicator light ... .. .. . . 15
Electronic stabili zation program (ESP)
How the sys tem works ....... .. .. .. . 204
Warning/indicator lights ....... .. .. .. 15
Emergency braking . . . . . . . . . . . . . . . . . . . 98
E mergency flasher . . . . . . . . . . . . . . . . . . . 52
Warn ing/ indicator lights ..... .. .. .. . . 16
Emergency key . . . . . . . . . . . . . . . . . . . . . . 3 7
Start ing engine ........... ... .. ... . 39
Emergency locking of the doors ..... .. .. 44
E mergency release
Selector lever ............ .. .. .... . 132
E mergency starting ......... ... .. .. . 284
Emergency towing .......... ... .... . 286
E mergency unlocking
I gnition key ........... .. .. .. .. .. .. 39
Energy management ..... .. .... .. .. . 211
Battery power ............... .. ... 212
Driver notification . ......... .. .. .. . 212
E ngine
Compartment . ........... .. .. .... . 239
Coolant .. .. ............... .. .... . 244
H ood .. .. .. ................ ... .. . 237
Starting ... ... .... ...... .. .. .. .. .. 92 Starting
with jumper cables ....... .. 284
Stopping . ..... .. .. .............. .. 94
Engine compartment Safety instructions ............. .. .. 23 7
Working the engine compartment .... 237
Engine coolant system ............ ... 244
Adding coolant . .. ................ . 245
Checking coolant level ............ .. 244
Checking the engine coolant level ..... 244
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 31
Radiator fan ..... ................ . 246
Engine coolant temperature
T emperature gauge . ........... .. .. . 10
Engine data . .... .. ............. .... 292
Engine hood
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7
How to release the hood . . . . . . . . . . . . 23 7
Engine oil ...... .. ............. .... 239
Adding . .. .. .. .. ............. .. .. 242
Additives . ... .. .. .. .............. . 242
Changing ..... .. .. .............. . 243
Check oil level ... ............. .... 242
Consumption .. .. ............. .. .. 242
Oil consumption .. ... .......... .. .. 241
Oil grades . .... ................... 239
Specification and viscosity ........ ... 239
Engine oil level .... ................ .. 36
Engine oil pressure
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 31
Engine oil sensor defective . . . . . . . . . . . . 36
Engine speed limitation . . . . . . . . . . . . . . . 36
Environment Break-in period . .. ............. .... 213
Catalytic converter ............. .... 214
Disposing of your vehicle battery ..... 251
Driving at high speeds .............. 215
Driving to minimize pollution and noise 215
Fuel .. .. .. .. .. .. ............. .. .. 234
Fuel economy .. .. ... .......... .. .. 215
Leaks under your vehicle .......... .. 23 7
Letting the vehicle stand and warm up. 216
Proper d isposal of drained brake fluid . 247
Proper disposal of drained engine cool-
ant .. .. .. .... .. ............. .... 245
Proper disposal of drained engine
oi l . . . . . . . . . . . . . . . . . . . . . . . . . 242, 243
Recycling used engine oil ............ 242

Index 303
-----------------------------------.......
Unleaded fuel ..................... 232
What should I do with an old battery? . 251
Environmental note
Rear window defogger . . . . . . . . . . . 83, 88
Roof rack .. .. ........... .. .. .. .... 74
EPC
refer to Electronic power control .... .. 15
E SP
refer to Electronic stabili zation program
(ESP) .... .. ................. .. .... 15
Event Data Recorder (EDR) ............ 204
Exhaust tail pipes Cleaning . .. ............. .. .. .. .. . 226
Expansion tank ............ .... .. ... 244
Exterior mirrors
Adjusting . ................. ... .... 57
Dimming ... ................ ... .... 58
Heating .. .. ............. .... .. .. .. 57
Eyeglasses compartment .... .. .. .. .. .. 77
F
Fan
Deluxe automatic climate control .. .. .. 81
Deluxe automatic climate control plus . . 87
Radiator ... .. .............. ... ... 246
Fastening Booster seats ............ .. .. .. .. . 194
Convertible child safety seats . .. .. .. . 192
I nfant seats ............. .... .. .. . 191
Flat tire Changing .. .. ........ ... .. .. .. .. . 274
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . 149
F og lights . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . 149
For the sake of the environment
Gasoline fumes and the environment .. 234
Reducing engine noise by early upshift-
ing .. .. .. .. .. .. ........... .. .. .... 11
Refueling .. .. ........ ... .. .. .. .. . 234
Saving fuel by early upshifting .. . ... .. 11
Front airbags
Description . .. ........... .. .. .. ... 166
Howtheywork .................... 171
Fr ontal collisions and the laws of physics 155
Front ashtray ............... ... ... ... 75 Front seats
. . . . . . . . . . . . . . . . . . . . . . . . . 61
Adjusting ..... .... ............... 146
Child restraints in the front seat .... .. 163
Convenience side view . . . . . . . . . . . . . . . 66
Symmetrical seat positions . . . . . . . . . . . 66
Fuel Additives ... ..... .. ............... 232
Blended gasoline ... .............. . 232
Consumption .. .. .... ......... .. .. . 22
Filler neck . .. .. .. .. . .............. 233
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline .. .. .. .. .. . .. .... ........ 232
Gasoline additives .. .............. . 233
Octane rating .. .. ................. 232
Recommendation . .... ......... .. .. 232
Refuelling ..... .. .. ............... 234
Reserve ....... .... ................ 12
Tank capacity .................... . 292
Unlocking the fuel filler flap by hand .. 235
Fuel economy messages (efficiency pro-
gram) .... .. .. .. .. .. . .............. . 26
Fuel filler flap Unlocking the fuel filler flap by hand .. 235
Fuel supply too low ................. . 35
Fuses Assignment . . . . . . . . . . . . . 280, 281, 282
Replacing ........................ 280
G
Garage door opener (Homelink ®) .. .. .. 140
Gas discharge lamps .. ..... .......... 283
Gauges Engine coolant temperature . . . . . . . . . . 10
Fuel gauge .. .. .. ............... .. . 12
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 11
Gear recommendation .............. .. 25
Gearshift indicator . .. ... ....... ...... 20
Gearshift lever 6-speed manual transmission ...... .. 126
General illustration Instruments and controls .......... ... 8
Glossary of tire and loading terminology 253
Glove compartment . . . . . . . . . . . . . . . . . . 77
Gross Vehicle Weight Rating (GVWR) . .. 290
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Index 307
-----------------------------------.......
R
Radiator fan ... .... .. .... ... .. .. ... 246
Ra in sensor .. .. ........ ... .. .. .. .. .. 55
Rain sensor defective ....... .... .. .. .. 34
Reading lights
Fr ont .. .. .. ............. .. .. .. .. .. 53
Rear . ..... .. .. ... . .... ... .. .. .... 54
Rear fog lights . . . . . . . . . . . . . . . . . . . . . . SO
Rear lid
refer to Luggage compartment 44, 68, 150
Rear light Defective . . . . . . . . . . . . . . . . . . . . . . . . . 3 5
Rear view camera Park ing mode 1
P ark ing mode 2 137
138
Rear view mirror . . . . . . . . . . . . . . . . . . . . . 58
Rear window defogger . . . . . . . . . . . . 83, 88
Rear window sun shade . . . . . . . . . . . . . . . 54
Recirculation mode De luxe automatic climate control . . . . . . 82
De luxe automatic climate control plus . . 87
Red symbols ... .... .. .... ... .. .. .... 29
Refill engine oil ............ .... .. .. .. 3 2
Refuelling . .. .... ......... .... .. .. . 234
Release lever for hood ... ... .. .. .. .. . 23 7
Remote control garage door opene r
( H ome link ®) . . . . . . . . . . . . . . . . . . . . . . . 140
Remote control key Unlock ing and locking ..... .. .. .. .. .. 41
Remote rear lid release .. ... .. .. .. .. .. 44
R epa ir manua ls ......... ...... .... .. 293
Repairs Airbag system ........... .. .. .. .. . 175
Replacing bulbs . .. ..... ... .. .. .. .. . 283
Replacing t ires and wheels ... .. .. .. .. . 264
Replacing w indshield wiper blades .. .. .. 56
Report ing Safety Defects .... .. .. .. .. . 152
Reset button ... ........ ... .. .. .. .. .. 12
Retractor . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7
R ims
Cast alloy .. .... ......... .. .. .. .. . 22 5
Roof luggage rack
Mounting po ints .......... ... ... ... 74 Roo
f rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Roof load ... .. .... . ... ...... ... .. . 74
also refer to Roof luggage rack . . . . . . . . 73
s
Safe driving habits ... . .. .. ..... ... .. 144
Safety Wa rning/ind icator lights ............ . 15
Safety be lt pos ition . . . . . . . . . . . . . . . . . 158
Safety be lts worn by pregnant women . 159
Safety be lt pretensioner .. ..... ... .. .. 160
Serv ice and disposa l .... .... ... .. .. 161
Safe ty be lts . . . . . . . . . . . . . . . . . . . . . . . . 15 7
Cleaning .. .. .. .. ... .. .......... .. 230
Danger to passengers who do not wear a
safety belt . ....... . .. .. ..... ... .. 155
F astening ....... .. . .. .. ..... ... .. 157
Improper ly worn . ................. 160
Not worn ... .. ...... ............. 155
Safety be lt pos ition . ... ... ... .. .. .. 158
Safety instructions ................. 157
Securing child safety seats ......... . 195
Spec ial considerations for pregnant
women ... .. .. .. .... ............. 159
Unf astening . .. .. ............... .. 159
Warning/ind icator light . ..... ... .. .. 154
Why YOU MUST wear them ... ... .. .. 154
Worn properly ... .. .. ... ..... ... .. 156
Safety be lt warning ligh t . . . . . . . . . 16, 15 4
Safety compliance sticker ............ 290
Safety eq uipment .... . .. .. ..... ... .. 144
Safety featu res for occ upant rest raint and
prote ction . . . . . . . . . . . . . . . . . . . . . . . . . 144
Safety gu idelines
Seat adjustment .. .. . .. .... .... .. .. . 61
Safety instr uctions
Engine compartment . ... .... ... .. .. 237
for side curtain airbags ......... .... 184
for using ch ild safety seats ........ .. 189
for using safety belts .......... .... . 157
Moni to ring the Advanced Airbag Sys -
tem .. .. .. .. .. .. .. . .. .... .... .... 175
Seat adjustment Driver's seat . . . . . . . . . . . . . . . . . . . . . . . 61
Easy entry funct io n . . . . . . . . . . . . . . . . . 64
Easy entry manua l function ......... .. 63
Fo r-and-aft manua lly ... .. .. ... ... .. . 62
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