2010 AUDI A5 CABRIOLET cooling

-~_C_ h_e _c_ k_ i_ n ....: g:::e._ a_ n _ d_ f_il _l _in _ g =- --------------------------------------------
The expansion tank in your vehicle is equipped with an electric coolant
level sensor.
When the coolant level is too low, the warn ing light in the Auto-Check
System ~
page 29 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 recommend 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
coo lant loss, the cooling system should be inspected immed iate ly 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 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.
• Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light, downward pressure on the top of
the cap.
• To avoid being burned, do not spill antifreeze or coolant on the
exhaust system or hot engine parts. Under certain conditions, the
ethylene glycol in engine coolant can catch fire.
0 Note
Do not add any type of radiator leak sealant to your vehicle's engine
coo lant. Adding radiator repair fluid may adverse ly affect the func­
tion 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 compartment,
always read and heed all WARNINGS::::::> & in "Working in
the engine compartment" on
page 280.
-Turn off the engine .
- Let the engine cool down.
- Place a thick rag over the coolant expansion tank
=> page 287, fig. 223 and carefully turn the cap counter­
clockwise ::::,
&.
- Add coolant .
- Twist the cap on again
tightly.
Replacement engine coolant must conform to exact specifications
~ page 286, "Coolant". Even in an emergency, if coolant additive
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. Excess coolant will be
forced out through the press ure re lief va lve in the cap when the
eng ine becomes hot .
& 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. _.,

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
A
A/C mode ...................... 93, 100
Accessories ..... .................. . 345
Active rollover protection system ... ... 187
Retracting rollover protection . ..... 188
Adaptive cruise control ............ .. 116
Chang ing speed .................. 119
Dr iver information ............... 122
Driver intervention prompt ........ 126
Driving in traffic ................. 117
Driving program .. .. ............. 127
Error messages . .. ...... .... ..... 125
Open road ...................... 117
Override ................ ...... .. 117
Request for driver to assume control 117
Save speed . . . . . . . . . . . . . . . . . . . . . . 119
Setting distance ................. 121
Setting time interval . ............. 121
Sett ings ... ..................... 127
Special driving situations ........ .. 127
Status messages ........ ......... 125
Switching on and off .............. 118
System limits ................ ... 127
T emporarily turning off ........... 120
warning/indicator lights ........... 123
Adaptive light ... ...... .............. 66
defect ive .. .. .. .. .. .............. 35
Adding Engine coolant .................. 288
Engine oil .. ...... ....... ..... ... 285
Windshield washer flu id ........ ... 295 Additional accessories
............... 345 Side airbags .. .. .. .. .. .. ......... 219
Additives We
ight-sensing mat .............. 223
Engine oil ........ .... .. .. .. .. ... 285 When must
the system be inspected? 211
Adjusting All wheel drive
.. .. .. .. .. ...... ... .. 246
Steering column .......... .. .. .. . 105 Winter tires
.. .. ................. 311
Adjusting front seats .......... ...... . 77 Alloy wheels
........... .. .... .... .. 266
Airbag Warning/indicator lights ... .. .. .. .. 14
Airbag system .................. 200, 220 Advanced Airbag System .......... 204
Advanced Airbag System components 207 Care .................... .. .... . 214
Child restraints .................. 224
Children ........................ 223
Components (front airbags) ... .. .. . 207
Danger of fitting a child safety seat on the
front passenger seat ............ 202
Disposal ........ .... ..... .. .... . 214
Front airbags .............. .. 204, 205
How do the front airbags work? ..... 209
How many airbags does my vehicle have? .
207
How the Advanced Airbag System compo- nents work together ........... . 208
Important safety instructions on the knee airbag system ............ ... .. . 218
Important things to know .. .. .. .. . 200
Indicator light ........ .. .. .. .... . 211
Knee airbags .................... 216
Monitoring . .. ............... ... 211
PASSENGER AIR BAG OFF light ..... 212
Repairs .. ........ ... ... .. .. .. .. . 214
Safety instructions ............. .. 213 Alternator
Malfunct ion .... .. .. .............. 28
Anti-freeze
See Eng ine cooling system ......... 286
Anti-glare inside day-night mirror ..... .. 72
Anti -lock brake system
How the ABS system works . . . . . . . . 245
Wa rning/indicator lights . .......... 16
Anti-Slip Regulation System (ASR) How the system works ..... ... .. .. 242
Anti-theft systems Electronic immobilizer ............. 40
Ashtray ............................ 85
Asterisk What does it mean when something is
marked with an asterisk? . . . . . . . . . . . 5
Audi brak ing guard .................. 129
Error messages . . . . . . . . . . . . . . . . . . 131
Settings ........................ 131
Status messages ................. 131
Switching on and off ....... ... .. .. 131
Audi drive select Description ..................... 145
Setting the driving mode .......... 146
Audi Service Repair Manuals and Literature ..
343

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Chassis
Undercoating . ...... ...... ... . .. . 267
Checking Engine coolant level .............. 287
Checking tire pressure ............... 302
Child restraint system anchors . ... .... 235
Child restra ints
Danger of using child restraints in the front
seat ........ ..... .. .... ... .. .. 202
Where can I get add itional information
about chi ld restraints and their use? ...
239
Child safety ................ .. .... .. 222
Convertible locking retractor ..... .. 232
Important safety instructions for using
child safety seats ............ ... 225
Important things to know when driving w ith children ................. .. 222
Insta lling a child restraint using the LATCH
system ....................... 238
Mounting and releasing the anchorage hook ............ ...... ... .. .. 238
Child safety seats ... ........ .... .. .. 227
Booster seats ............. ... ... 230
Convertible child seats ............ 228
Convert ible locking retractor ....... 232
Danger of using child restraints in the front
seat ........ ...... ...... .. .. .. 202
How do I properly install a child safety seat in my vehicle? .................. 225
Infant seats .................. ... 227
Installing .. .. .. ........ ......... 232
LATCH system ................. .. 238
Safety instructions ............. .. 225 Child seats
Lower anchorages ............... . 237
Cigarette lighter ............. .. .... .. 85
Cleaning Alcantara (synthet ic suede) . .. .. .. . 271
Engine compartment ........ .. .. . 272
Exhaust tail pipes ......... .. .. .. . 267
Fabrics and fabric coverings ........ 268
Instrument panel ................ 269
Interior ........ ... .. .... ....... 268
Leather ............ ... .. .. .... . 270
MMI control console ............. . 268
MMI display . .. .. ............... . 268
Plastic and vinyl ................ . 264
Plastic parts .. ... ... ... .. .. .. .. . 269
Safety belts ........... ... ... .... 2 72
Trim strips .......... ... ... ...... 264
trim str ips .. .. ........... .. .. .. . 265
Cleaning and protection ...... .. ..... 260
Clock .............................. 10
Cold tire inflation pressure ........ .. . 300
Compact spare tire ........... .. .... . 319
See also Spare tire ........ .. .. .. . 319
Compass mirror ......... .. .. .. ...... 75
Compliance ............. ........ ... 346
Consumer Information .......... 185, 343
Contacting NHTSA ... ........ .. .... . 185
Continuously Variable Transmission (CV T)
See multitronic ® ................. 155
Conven ience key ........ ...... ..... .. 43
Locking and unlocking vehicle ....... 43
S TART ENGINE ST OP button ... 108, 109
Starting engine ...... ... .. .. .... . 108 Switching engine off .
..... .. .. .. .. 109
Switching on ignition ........ ... .. 108
Convenience opening/closing .......... 48
Convert ible chi ld safety seats ......... 228
Convertible locking retractor Activating ...... .......... .. . ... 234
Deactivating . .. ... ............. . 235
Using to secure a child safety seat . . 232,
234
Cooling System Expansion tank ...... .... .. .. .. .. 287
Cooling system .. ............. .... .. 286
Cornering light ...... .. .... .......... 66
Cru ise control
Changing speed .. .. ............. 114
Preselect speed . . . . . . . . . . . . . . . . . . 114
Switching off . . . . . . . . . . . . . . . . . . . . 114
Switching on ... .. .. ............. 113
Wa rning/indicator lights ... ........ 15
Cruising range .. .. .. ..... ........... 22
Cup holders ................ ... ... .. 84
D
Data 342
Data recorde r ... ............... .... 240
Date display . . . . . . . . . . . . . . . . . . . . . . . . 10
Daytime running lights ............... 64
Declaration of compliance Adaptive Cruise Control ........... 346
Audi side ass ist ...... .. .... .... .. 346
Cell phone package .. ........... .. 346
Conven ience key .. .. .... ......... 346

-Alphabetical inde x lffi'f ___,__ ______________ _
Emergency release
Selector lever ............ ... .. ..
154
Emergency starting .. ..... .......... 333
Emergency towing ..... ............. 336
Eme rgency unlocking
Ignition key .. .. .. .. ...... ........
39
Energy management ................ 247
Battery power ................ ... 249
Driver notification ............. ... 249
Engine
Compartment . ...... .... .... .. ..
281
Coolant ............ .... .. .... .. 286
Hood . ............. .... ...... .. 279
Starting ..................... ... 106
Starting with jumper cables ..... ... 333
Stopping . ...................... 107
Engine compartment
Safety instructions ............ ...
280
Working the engine compartment .. 280
Engine coolant system
Malfunction .......... ...... .. ....
29
Radiator fan ........ .... .. .. .. .. 289
Engine coolant temperature
Temperature gauge ............ .. .. 8
Engine cooling system ............ ...
286
Adding coolant ... ............... 288
Checking coo lant level . .. ....... .. 287
Checking the engine coolant level . .. 287
Engine data ...... .......... ...... .. 342
Engine hood
Closing .................. .... ...
280
How to release the hood .. ....... .. 279
Engine oil . ..... ....... ... .. .. .. ... 282
Add ing ....... ... .. .. .. .. ....... 285
Additives .. ..... ... .. .. ......... 285
Changing .. .... .. .... .. .. .. .. .. . 285
Check o il level ...... .... .. .. .. .. . 284
Consumption . .. .. .. .. .... .. ..... 284
Oil consumption .......... .. .. .. . 283
Oil grades .... ................ .. 282
Specification and viscosity ... ... .. . 282
Engine oil level ................... ... 35
Engine oil pressure
Malfunction ... ................. ..
30
Engine oil sensor defective ............ 35
Engine speed limitation ............... 35
Environment
Break-in period ............ ..... .
250
Catalytic converter ........ .. .. .. . 251
Disposing of your vehicle battery . .. .
294
Driving at high speeds ..... ...... . 253
Driving to minimize pollution and noise ..
252
Fuel ........................... 276
Fuel economy ................... 252
Leaks under your vehicle .......... . 280
Letting the vehicle stand and warm up ...
253
Proper disposal of d rained brake fluid 290
Proper disposal of drained engine coo lant
288
Proper disposal of d rained engine oil 285
Recycl ing used engine o il .. . .. .. .. . 285
Unleaded fuel ............ .. .... . 274
What should I do with an old battery?
294
Environmental note
Rear window defogger ........ .
92, 100
EPC
See Electronic power control . . . . . . . . 13
ESP
See Electronic stabilization program (ESP)
240
Event Data Recorder (EDR) 240
Exhaust ta il pipes
Cleaning ........... ...... .... ..
267
Expansion tank .. .. .. .. ............. 287
F
Fan .................. .. .... .... 91,98
Radiator . ........... ...... .... .. 289
Fastening
Booster seats ............ .... . ..
230
Convertible child safety seats ...... 228
Infant seats .. .. ................ . 227
Flat tire
Changing .......................
320
Floor mats ..... ...... .. . .. .. .. .. .. 183
Fog lights .................. ..... ... 63
Folding the rear seat backrests .. ...... . 84
Foot pedals . ........... ...... .... .. 182
For the sake of the environment
Gasoline fumes and the environment
276
Refueling ................ ... .. .. 276
Saving fuel by early upshifting ........ 9
Front airbags Description .. ...... .............
204
How they work ...... .. .... .. .. .. 209