2011 AUDI A5 CABRIOLET engine coolant

___________________________________________ C_;_ h _.:. e_c _k _ i_n -=g ~ a_n _ d_ f_i _ll _i _ n -=g '--.......J-
0 Note
• Coolan t poll utes the environment and co uld cause an engine fire.
Excess coolant w ill be forced out throug h the pressure relief valve in
t he cap w hen the eng ine becomes ho t.
• If, i n an emer gency, only water can be adde d, the correct ratio
between wate r an d an tifree ze=>
page 28 6 must be restored as soon
as possib le.
<£> For the sake of the environment
Dra ined coolant should not be reused. A lways dispose of used coolant
w hile observ ing a ll enviro nmental regula tions. •
Radiator fan
The r adia tor fan switc hes on au tomatic ally by its elf .
Th e radiator fan is dr iven by the e ngine vi a the V-bel t. Th e v iscous
clutch regu lates the speed of the fan accord ing to the temperature of
th e co olan t.
An auxiliary e lectr ic rad iator fan* sw itches on a nd off depend ing o n
coo la nt temperat ure and other vehicle ope rating conditions .
After you sw itch t he engi ne off, the a uxiliary f an can con tinue r unning
for up to 10 minutes -even w ith the ignition off . It can even switch on
a g ain lat er by itse lf=> &, if
• the temperature of the e ngine coola nt rises due to the heat build ­
up from the eng ine in the engi ne compa rtment, o r
• the engine compartment heats up because the vehicle is parked in
intense s unlight .
& WARNING
• To reduce the risk of personal injury never touch the radiator
fan.
Vehicle OP-eration
& WARNING (continued )
• The auxiliary ele ctric fan is temperature controlled and can
switch on suddenly even when the engine is not running.
• The auxiliary radiator fan switches on automatically when the
engine coolant reaches a certain temperature and will continue to
run until the coolant temperature drops. •
Brake fluid
Checking brake fluid level
The brake flu id level ca n be chec ked wit h a quick gl an ce.
Fig . 224 Engi ne
c ompartm ent : Brake
fluid re se rvoir
B efo re you check anyth ing i n the e ngine compartment ,
always read and heed all WARNINGS~ & in " Workin g in
t h e e ng in e co mpartme nt" on
p age 280.
- Rea d the b rak e fl uid le ve l f ro m t he brak e fluid re serv oir
~ f ig. 224. The br ak e fl uid le vel mus t be be tw ee n the
" M IN " an d "MAX " m ar kin gs.
Th e br ake fl uid re se rvoir is loca ted at th e rear pa rt iti on of the engine
compartment on the left side=>
page 281. .,_
Vehicle care Do-it-yourselt service iTechnical data

Checking and filling IJl!II
--------------------------------------------=------- =------
<£> For the sake of the environment
Because of the problem of proper disposal of a battery, we recom­
mend your authorized Audi dealer change the battery for you.
Batte ries contain sulfuric acid and lead and must always be disposed
of properly in compliance with all environmental regulations.
Disposing of vehicle batter ies improperly is very dangerous to the
environment. •
Windshield/headlight washer
container
Fig. 226 Engine
co mp artmen t: Wind­
sh ield and headlight*
washer fluid container
The washer fluid container is marked with the symbol Q on
its cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS => & in "Working
in the engine compartme nt" on
page 280 .
-Lift the filler cap tongue to add washer fluid. You can fill
the container to the top.
- Press the cap back onto the filler neck after filling the
container.
Vehicle OP-eration
You can find the reservoir capacity in the table in::::, page 342.
Clean water should be used when filling up. If possible, use soft water
to prevent scaling on the washer jets. Always add a glass cleaner solu­
tion (with frost protection in the winter).
0 Note
Do not mix engine coolant antifreeze or any other additives to fill up
the windshie ld washer reservoir .•
Vehicle care Do-it-yourselt service iTechnical data

___ C_ o_n_ s _ u_m_ e_ r_ I_ n_ f_o _r_ m_ a_ t_io _ n _____________________________________________ _
• oil changes, and
• cl eaning or re placing t he air fi lter.
W For the sake of the environment
By reg ula rly m ainta ini ng yo ur vehicl e, you h elp ma ke sure th at emis­
sion standards are ma inta ined, thus mi nimizi ng adve rse effects o n
t he environmen t.•
Important considerations for you and your
vehicle
T he i ncreasing use of e lec tronics, soph is tica ted f uel inject io n a nd
em ission cont rol systems, and the gene rally increasing tec hnica l
c o m plex ity of to d ay' s automob iles, have ste adily re duced the s cope
of ma intenance and repairs wh ich can be carr ied o ut by vehicle
ow ne rs.
Also, safety and environmental co ncerns p lace very st ric t
limits o n the nature of re pairs and adjust ments to engi ne and trans­
mission parts which an owner c an per form .
Ma int ena nce, ad justments and repairs us ually r equire sp ecial tools,
test ing devices an d other e quipme nt available to s pec ia lly trai ne d
wo rks ho p pe rsonn el in order to assure p roper perfor mance, rel i­
ability and safety of the vehicle and its many systems.
Impro per m aintenan ce, a djustments an d repair s can im pair the ope r­
ation and reliability of your vehicle and even void your vehicle
wa rranty . Therefo re, proo f of se rvicing in accordan ce wi th the ma in ­
t enance schedule may be a condi tion fo r upholding a possib le
wa rranty cla im made w it hi n the wa rra nty period .
Above all, operat io nal safety can be adversely affected, crea ting
unnecessary risks for you and your passe nge rs.
I f i n do ub t abou t any se rvi cing, have it done by you r authorized Audi
dealer or a ny other pro perly eq uipped and qualified wo rkshop . We
st rong ly ur ge yo u to give you r a uth orized Aud i dea ler the opportun ity
t o pe rfor m all scheduled mainte nance a nd necessary repairs. Yo ur dea
ler has t he facilit ies , original parts a nd trai ned spec ia lists to keep
you r vehicle ru n ning pr operly.
Performing limited maintenance yourself
The follow ing pages des cribe a lim ited nu mber of pro ce dur es which
can be perfo rmed on your vehicle wit h ord ina ry tools, s houl d the need
a ris e a nd tra ined p erson ne l b e unavailable. Before perfo rm ing any o f
these procedures, always thorough ly r ead a ll of the applicab le text
a nd caref ully follow the ins truc tion s given. A lw ays r igoro usly o bserve
t he
WARNINGS prov ided .
Before you check anything in the engine compartment, always read
and heed all WARNINGS=>
& and=> & in "W orkin g in t he engine
compartment" on
page 280.
& WARNING
• Serious personal injury may occur as a result of improperly
performed maintenance, adjustments or repairs.
• Always be extremely careful when working on the vehicle.
Always follow commonly accepted safety practices and general
common sense . Never risk personal injury .
• Do not attempt any of the maintenance, checks or repairs
described on the following pages if you are not fully familiar with
these or other procedures with respect to the vehicle, or are uncer­
tain how to proceed.
• Do not do any work without the proper tools and equipment.
Have the necessary work done by your authorized Audi dealer or
another properly equipped and qualified workshop.
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never reach into the area around or touch the
radiator fan. It is temperature controlled and can switch on
suddenly -even when the engine is off and the ignition key has
been removed . The radiator fan switches on automatically when
the coolant reaches a certain temperature and will continue to run until the coolant temperature drops. _,,,

___ 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 ... ... 186
Retracting rollover protection . ..... 187
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 . . . . . . . . . . . . . . . . . . . . . . . . 3 7
Adding Engine coolant .................. 288
Engine oil .. ...... ....... ..... ... 284
Windshield washer flu id ........ ... 295 Additional accessories
............... 345 Side airbags .. .. .. .. .. .. ......... 218
Additives We
ight-sensing mat .............. 222
Engine oil ........ .... .. .. .. .. ... 284 When must
the system be inspected? 210
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 .................. 199, 219
Advanced Airbag System .......... 203
Advanced Airbag System components 206 Care .................... .. .... . 213
Child restraints .................. 223
Children ........................ 222
Components (front airbags) ... .. .. . 206
Danger of fitting a child safety seat on the
front passenger seat ............ 201
Disposal ........ .... ..... .. .... . 213
Front airbags .............. .. 203, 204
How do the front airbags work? ..... 208
How many airbags does my vehicle have? .
206
How the Advanced Airbag System compo- nents work together ........... . 207
Important safety instructions on the knee airbag system ............ ... .. . 217
Important things to know .. .. .. .. . 199
Indicator light ........ .. .. .. .... . 210
Knee airbags .................... 215
Monitoring . .. ............... ... 210
PASSENGER AIR BAG OFF light ..... 211
Repairs .. ........ ... ... .. .. .. .. . 213
Safety instructions ............. .. 212 Alternator
Malfunct ion .... .. .. .............. 29
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 . .......... 15
Anti-Slip Regulation System (ASR) How the system works ..... ... .. .. 242
Anti-theft systems Electronic immobilizer ............. 41
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_ i_c __ a _l _i_n :...::d __ e::..: x:...::...,_ _________________________________________ _
Emergency locking of the doors .. .. ....
47
Emergency operation
Luggage compartment lid .... ... .. .
48
Power top ... .. .. .. ... ... .... .... 57
Emergency release
Sele ctor lever ...................
154
Emergency starting .. .. ............. 333
Emergency towing ..... .. .. ..... .... 336
Emergency u nlocking
Ignition key .. ................. ...
40
Energy management .............. .. 247
Battery power ................ ... 249
Dr iver not ification ......... .... ... 249
Engine
Compartment .. .. ... . .. ... ... . ..
281
Coolant ................ .. .... .. 286
Hood .................. ...... .. 279
Starting ... ............. ...... ..
106
Starting w ith jumper cables ........ 333
Stopping .. .. ... .... ........ .... 1 07
Engine compartment
Safety instructions .. ... ... .... . ..
280
Work ing the eng ine compartment 280
Engine coo lant system
Ma lf u nct ion . . . . . . . . . . . . . . . . . . . . . .
31
Radiator fan ... .... .. . ... ... .. .. 289
Engine coo lant tempe rature
T empera ture 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 re lease the hood ........... 279
Engine oil .... ..... ... ... ... .. .. .. . 282
Add ing ......................... 284
Add itives ....................... 284
Changing ............ .... .. ..... 285
Check o il level ....... ... .. .. .. .. . 284
Consumption ............. ....... 284
Oi l co nsumption ............... .. 283
Oi l grades ...................... 282
Specification and viscosity .. .. .. .. . 2 82
Engine oil leve l .. . .. ............... .. 36
Engine oil p ressure
Ma lf u nction . . . . . . . . . . . . . . . . . . . . . .
31
Engine oil se nsor defec tive . .. .. ... .... 36
Engine speed limitatio n ............... 36
Environmen t
B reak -in period .. .... .. .. ... .... .
250
Catalytic converter .... ... ... .. .. . 251
Disposing of your vehicle battery ... . 29 4
Driv ing at high speeds ............ 253
Driv ing to minimi ze po llution and noise ..
252
Fuel ... ............... .. .. .. .. . 27 6
Fuel e co nomy ............ .. .... . 252
Leaks unde r yo ur vehicle .. ... ..... . 280
Letting the vehicle stand and wa rm up . ..
253
Prope r disposa l of dra ined bra ke fluid 290
Pro per disposal of dra ined engine coo la nt
288
Proper disposal of dra ined engine oil 284,
2 85
Recycl ing used eng ine o il ... .. .... . 284
Unleaded fue l ................... 274
What should I do w it h an old battery?
294
Environmental note
Rear window defogger ........ .
92, 100
EPC
See Electronic power contro l . . . . . . . . 13
ES P
See Electronic stabilization program (ESP)
240
Event Data Recorder ( EDR) 240
Exhaust ta il pipes
Cleaning ... .... .... .. .. ...... ..
267
Expans ion tank ..... ................ 28 7
F
Fan ..................... .... ... 9 1, 98
Rad iator ................. ... .... 289
Fastening
Booster seats ...................
229
Convertible child safety seats ...... 228
Infant seats ...... ............... 227
Flat tire
Changing ................. .... ..
320
Floo r mats ............ .. .. .. .. .. .. 182
Fog lights .. ... ........ ...... .. . ... . 64
Folding the rear seat backrests . ... .. .. . 8 4
Foot pedals ................... ... .. 182

Alphabetical index -________________ fWI
For the sake of the environment
Gasol ine fumes and the env ironment 276
Refueling ..... .. .. .. ............ 276
Saving fuel by early upshifting ..... .. . 9
F ront ai rbags
Description ....... ... . .. .. .. ..... 203
How they work ................ .. . 208
Front armrest Adjusting ........................ 83
Storage compartment ............ .. 83
Front ashtray . .. .. .. ...... ....... ... . 85
Front seats .. .. .. .. ............. .... 77
Adjus ting . .. ... .... ... .. .. ..... . 179
Child restraints in the front seat .... 201
Conven ience side view . .. ...... ..... 82
Symmetrical seat posit ions .......... 82
Upper cabin heati ng ........... .. . 104
Frontal collisions and the laws of physics 190
Fuel Add itives ....................... 274
Blended gasoline ................ . 274
Consumpt ion ....... ...... .. .. .. .. 21
Filler neck ..... .. .. .... .......... 275
Fuel gauge ......... ...... .. .... .. 10
Gasoline .................... .... 274
Gasoline additives .. .... ... ... ... . 275
Octane rating ............... .. .. . 274
Recommendation ... .... .... .. .. . 274
Refuell ing ... ... . ...... ......... . 276
Reserve ...... ...... .. .. .. .. .... .. 10
Tank capacity ............. .. .... . 342
Unlocking the fuel filler flap by hand . 278
Controls and equip­
ment Safety first
Fuel economy messages (efficiency
program)
25
Fuel filler flap Unlocking the fuel filler flap by hand . 278
Fuel supply too low ..... .. .. .. .. ...... 36
Fuse arrangement ........... ...... .. 328
Fuses Assignment ............ 329,330,331
Replacing . ... .. .... .. .. .. .. .. .. . 328
G
Garage door opener (Homelink ®) .. .. .. 171
Gas d ischarge lamps ...... ........... 332
Gauges Engine coolant tern perature .......... 8
Fuel gauge .. ..... .. .............. 10
Ta chometer ............. .. .. .. .... 9
General illustration
Instruments and controls ........ .. .. 7
Glossary of tire and loading terminology 297
Glove compartment ............... ... 87
Gross Vehicle Weight Rating (GVWR) ... 341
H
Head restraints .................. ... 180
Adjusting .. .. ... ... .. ... ...... .. 180
Front seats . .. .. .................. 82
Headlight washer reservoir ..... .. .. .. 295
Headlights Adaptive light ........... .. ....... 66
Fog lights . ... ................ .... 64 Headlight range control defective
.. .. 37
Rear fog lights .............. .. ... . 64
Washer system ................... 69
Heated Front seats ............... ...... . 103
Rear seats .. .. .. .. ............. . 103
Rear window . . . . . . . . . . . . . . . . 92, 100
Washer fluid nozzles ...... ... . ... .. 69
Heated outside mirrors ............... 73
Heating . . . . . . . . . . . . . . . . . . . . . . . . 88 , 95
Heavy clothing and safety belts ....... . 192
High beam ............ ...... .... .. .. 67
Warning/indicator lights ....... .. .. 15
High voltage warning label .... ..... .. 340
Homelink ® universal remote control ... 171
Hood Opening ........... .. .. .. .. .. .. . 279
Release lever ............. .... .. . 279
Horn ........ ........ .. . ... ... .. ... .. 7
How are child restraint system anchors related to child safety .. .. .... .......... 234
How many airbags does my vehicle have? ...
206
How often should I check my tire pressures? 303
How safety belt pretensioners work .... 197
Hydroplaning . ..................... 307
I
Ignition key ........... ...... .... ... 106
Emergency unlocking ............ .. 40
Vehicle operation Vehicle care Do-it-yourself service Technical data