2011 AUDI A5 CABRIOLET sensor

Intelligent technology
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Repl acing wheel s/tires
Vehicles wi th all wheel drive must a lways have tires of t he same size.
Also avoid tires with different tread depths. For details see page
=> page 307, "New tires and rep lacing tires and wheels".
Off -Road driving?
Your Audi does not have enough ground clearance to be used as an
off-road veh icle . It is therefore best to avo id ro ugh tracks and uneven
terrain as m uch as possible . Also refer to=>
page 251.
& WARNING
Alway s adju st your driving to road and traffi c conditi ons. Do not
let the ex tra safety afforded by all wheel dr ive tempt you into
taking extra risks.
• Although the all wheel dri ve is ve ry effecti ve, always
remember that braking capacity is limited by tire traction. You
should therefore not dri ve at ex cessive speeds on icy or slippery
road surfaces .
• On wet road surfaces , be careful not to drive too fast because
the front wheel s could begin to slide on top of the water (aqua­
planing ). If th is should occur, you will have no warning from a
sudden increase in engine speed as with a front-wheel drive
vehicle. Always drive at speeds which are suited to the road cond i­
tions -ris k of crash.
n
Controls and equip­
ment Safety first Vehicle operation
Energy management
Starting ability is optimized
E
nergy management contr ols th e distributi on of elec­
tri cal energy and thus optimizes the availabili ty of elec­
tri cal energ y for star ting the engin e.
If a vehicle with a conventiona l energy system is not dr iven for a long
per io d of time, t he battery is di sch arged by idling cur rent consume rs
(e .g. immob il izer) . In certain c ircumstances it can result in there
being insuffic ien t energy av a ilab le to start t he eng ine .
Inte lligent energy management in your ve hicle hand les the d istribu ­
tion of e lectrical energy . Starting ability is ma rkedly improved and
the l if e of the battery is extended.
Bas ically, energy management consists of
battery d iagnos is, idling
current management
a nd dynamic energy management .
Battery diagnosis
Battery d iagnosis con tinuously dete rmines the st ate o f the batte ry.
Sensors determ ine battery vo ltage, battery current and battery
t empe ra ture. This de termine s the cur rent sta te of cha rge and the
power of the battery.
Idling current management
I d ling current management reduces energy consumption wh ile the
vehicle is s tanding. W ith t he igni tion swi tched off, it con trols the
energy supply to the var io us electrical components. Data from
b att ery diag nosis is considered .
Depend ing on the battery 's state of charge, individual consumers a re
gradually t urned off to p revent excessive discha rge of the battery and
thus main tain start ing capab ility.
Dynamic energy management
Whi le the vehicle is being dr iven , dynamic energy management
dis tributes the energy generated a cco rding to the needs o f th e in di-
Vehicle care Do-it-yourself service Technical data

___________________________________________ C_ h _ e_c _k _ i_n -=g .._ a_n _ d_ f_i _ll _i _ n -=g '--- ........ 11'1
0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions. This is especially important if you live in a region where
the winter is extremely cold. If necessary, increase the proportion of
coo lant additive to 60% .
• When adding coolant additive to your cooling system, remember:
-We recommend using only coolant additive G12++ (check the
label) for your vehicle. This coolant additive is available at autho­
r iz ed Audi dealers. Other types of antifreeze can s ignificantly
reduce corrosion protection. The resulting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sealant to your vehicle 's
eng ine coolant. Adding radiator repair fluid may adversely affect the
function and performance of your cooling system and could result in
damage not covered by your New Vehicle Limited Warranty. •
Checking the engine coolant level
The engine coolant level can be checked with a quick
glance.
Fig. 223 Engine
compartment: Coolant
expansion tank
Vehicle OP-eration
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 ignition.
- Let the engine cool down .
- Place a thick rag over the coolant expansion tank
=:> fi.9. 223 and carefully twist the cap counter -clockwise
=> & .
- Read the engine coolant level in the open coolant expan­
sion tank=:> fig. 223. With a cold engine, the coolant level
should be between the "min" and "max" markings. When
the engine is warm, the level may be slightly above the
"max" marking.
The location of the coo lant expansion tank can be seen in the engine
compartment illustration =>
page 281.
To obtain an accurate reading, the engine must be sw itched off.
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 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 st ill recommend you check the coolant leve l from
t ime to time .
Coolant loss
Coolant loss may indicate a leak in the cooling system . In the event of
coolant loss , the cooling system should be inspected immediately by
your authorized Aud i dealer . It is not enough merely to add coolant .
In a
sealed system, losses can occur only if the boiling point of the
coo lant is exceeded as a result of overheating . .,
Vehicle care Do-it-yourselt service iTechnical data

Tires and wheels Ill _______________ _____.
than the size indicated on the vehicle placard or tire inflation pressure
label , you sho uld determine the proper tire infla tion pressure fo r
those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressu re monitoring sys tem (TPMS) that illuminates a low tire pres ­
sure telltale when one o r more of your t ires is s ignificantly under­
inflated. Accord ingly, when the low tire pressure tellta le illumi nates,
you should stop and check your tires as soon as possib le, and inflate
them to the proper p ress ure. D riving on a sign ificantly under-inflated
tire causes the tire to overheat and can lead to tire fa ilure . Under­
inflation also reduces f uel efficiency and tire tread life, and may
affect the vehicle's handling and stopping ability .
Please note that the TPMS is not a substitute for proper tire mainte­
nance, and it is the d river's responsibility to mainta in correct tire
pressure, even if under-inflation has not reached the level to trigger
ill umination of the TPMS low tire press ure te lltale.
Your vehicle has also been equipped w ith a TPMS malfunction indi­
cato r to indica te when the system is not operating properly . The
TP MS ma lf u nction indicator is combined with the low tire p ress ure
telltale. When the system detects a malfunct ion, the telltale will
fl ash for approximate ly one minute and then rema in continuously
illuminated. This sequence will continue upon subsequent vehicle
sta rt-ups as long as the malfunction exists.
When the ma lfunction indicator is illum inated, the system may not
be able to de tect or signa l low ti re pressure as intended . TPMS
ma lfunctions may occur fo r a var iety of reaso ns, includ ing the instal­
lation of replacement o r alternate tires or wheels on the vehi cle that
prevent the T PMS from functioning properly . Always check the TPMS
ma lfunction tellta le after replacing one or more tires or whee ls on
yo ur vehicle to ensure that the replacement o r alte rnate t ires and
wheels allow the TPMS to continue to funct ion proper ly .•
Vehicle OP-eration
App lies to vehicles : wi th t ire p ressu re mon it ori ng system
Tire pressure indicator appears
The tire pressure indicator in the instrument cluster
informs you if the tire pressure is too low or if there is a
system malfunction.
M
"'
j
Fi g. 23 2 Dis pl ay:
un der infl ation
wa rning
Fi g. 23 3 Dis play :
Sys tem malfun ction
Us ing the ABS sensors, the tire pressure monitor ing system compares
the t ire tread c ircumference and vibration characteristics of the ind i­
vidual tires .
If the pressure decreases in one or more tires, this is indi -
cated in the instrument cl uster with a warning symbol and a
message ~ fig. 232 . The d river message in the display goes o ut after
5 seconds . The driver message can be displayed again by p ressing the
!SET ] button. If only one tire is affected, the display will indicate its
posit ion. ._
Vehicle care Do-it-yourselt service iTechnical data

__________________________________________ __!F~U!_.:!S~e:.:s~ a~n~d:!_..!:b~u:!!l~b~s~ _J­
Left cockpit fuse assignment
No. C onsumer
Fus e pa nel @ (black )
1 Dynamic steering
3 Homelink
4 Lane Assist
5 Climate control Right headlight range adjustment
7 Left headlight range adjustment
Fig. 2 4 5 Left cock pit :
fuse pan el with plastic
cl ip
5
5
10 5
5
5
8 Vehicle electrical system control module 1 5
Vehicle OP-eration
No. Consumer Amps
9 Adaptive Cruise Control
5
10 Shift gate 5
1 1 Heater washer fluid nozzles
5
12 Climate control 5
13 Ce lt phone prep
s
14 Airbag
5
15 Term
inal 15
25
16 Terminal 15 engine 40
Fus e pa nel ® (brow n)
1 Automatic dimming interior rearview mirror 5
3 Gasoline fuel p ump 25
4 Auxiliary water pump 3 .2L FSI 5
5 Left seat heating with/wi tho ut seat heat ing 15/30
6 Electronic Stabilization Program
10
7 Horn 25
8 Left door window regulator motor 30
9 Wiper motor 30
10 Electronic Stabilization Program
25
11 Driver side door control modu le 15
12 Rain and light sensor 5
Fuse panel © (red)
3 Lumbar support 10
4 Dynamic steer
ing
35
6 Vehicle electrical system control module 1 35
7 Veh icle elect rical system control module 1 20
Vehicle care Do-it-yourself service iTechnical data

-Alphabetical inde x _ ___,_ ______ .::..:....=.:..:..__ __________________________ _
Ignition lock .. .. .. .. .. .. ... ........ 106
Malfunction .............. ... .. 32, 37
Immobilizer ... ................. . 11, 38
Important things to do before driving .. 177
Improperly worn safety belts ....... .. 196
Indicator lights ............. ...... ... 12
Airbag system ...... ..... .... 210,211
Dynamic steering .............. 13, 34
PASSENGER AIR BAG OFF .......... 211
Infant seats .... .... ...... ......... 227
Inside rear view mirror ................ 72
Insta lling child safety seats
Safety belts .................. ... 231
Instrument lighting .. .. .......... .... 66
Instruments and controls .............. 8 General illustration ............. .. .. 7
Interior lights ... .. .. .. ... ..... ...... 68
Rear .... .. .. .................... 69
Interval wip ing .. ............ ........ 69
Rain sensor ..... ....... ..... .. .. . 69
J
Jumper cables ...................... 334
Jump-starting .... .. .... .. .. .. .. .. .. 333
K
Key . ..................... .. .... .. . 38
Battery replacement ............... 39
Key replacement .... .. .. .. .. .. .. .. 38
Master key with remote control ...... 38
Mechanical key ..... ... ........... 40 Kick-down
multitronic ® ................ ... . 1S8
t.
t . ® rp ronic ................ ... .. . 151
Knee airbags ................ .. .... . 215
Description . .. ................. . 215
How they work ......... .. .. .. .. . 216
Important safety instructions ...... 217
L
Lane assist
Activating and deactivating ........ 132
Description . .................. .. 132
Indicator in the instrument cluster display
133
Instrument cluster indicator light ... 132
Notes on instrumen t cluster display . 132
steering wheel vibration . .......... 135
warning time .. ... ... ... .. .. .. ... 135
LATCH ............ .... ..... .. .... . 234
Description ... ................. . 236
Installing a child restraint .. .. .... . 237
Location ....... ...... .... .. ..... 235
Mounting and releasing the anchorage hook .............. .... ....... 237
Leather . .. .. .. .. ..... ...... .. ... .. 269
Cleaning . .......... ... .. ... ... . 270
Lifting jack ......... .... .... ....... 323
Lifting vehicle .... ........... .. .. .. . 338
Light sensor ............ .... .. ...... 63
Light senso r defective ............. ... 35
Lighting .. .. .. .... ....... .... .... .. 63 Lights
Com ing home .......... .... ...... 65
Daytime running lights ............. 65
Dr iving light control . .......... ... . 63
Emergency flashers .. .. .. .. .. .. .. . 67
Exterior lighting .. .. .... ......... . 65
H igh beam ... .. .. .. .............. 67
High beam warning/indicator light ... 15
Leaving home ........ ... .. .... ... 65
Switching on and off .............. . 63
Turn signals .. .. .... ............. . 67
Xenon headlights . .. ............. . 66
Loading the luggage compartment 183
Locking Power locking switch . . . . . . . . . . . . . . 46
Rear lid/trunk lid ................. 4 7
Remote control key . . . . . . . . . . . . . . . . 43
Us ing the mechanical key . .......... 45
Low beams . . . . . . . . . . . . . . . . . . . . . . . . . 63
Lower unive rsal ancho rage bars (Canada) ...
234
Lower universal anchorages (Canada) . .. 234
Luggage Stowing ............ .. .. .. .... .. 183
Luggage compartment ............... 83
Increasing the s ize .. .......... .... 84
Loading ........... .. . ... ... .. ... 83
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . 84
See also Loading the luggage
compartment . .. .. ......... .... 183
See also Luggage compartment .... . 83
Luggage compartment lid
Emergency unlocking ....... .. .. .. . 48

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Power locking switch ... .. ..... ... .... 46
Powe r locking system ............ ... . 41
Emergency locking ............ .... 47
Locking and unlocking the vehicle from inside ...... .. .... .. .. .. .. .. .. . 46
Rear lid/trunk lid .... .. .. .......... 47
Selective unlock feature .. .......... 43
Settings ..................... ... . 43
Unlocking and locking vehicle ....... 43
Power locks
W indows open and closed .......... 49
Power steering . . . . . . . . . . . . . . 13, 34, 246
Power top . . . . . . . . . . . . . . . . . . . . . . . . . . S 1
Care and cleaning ................ 263
Closing .................. .... ... . 53
Convenience opening/closing . ....... 54
E mergency operation .. .. .......... 57
Error message ................. ... 52
General information .............. . 51
Indicator light ................ .... 52
Malfunct ion .. ... ......... .... .... 52
Opening ........ ........ .... .. .. . 53
Var iable power top storage bay ... .. . 55
Wind deflector . .. .. .. .. .......... 55
Power window regulators Convenience opening/closing .. ...... 49
Malfunctions ................. .... SO
Power window switches ............... 48
Pregnant women Spe cial considerat ions when wearing a
safety belt ............. ...... .. 195
Programming the Homelink ® universa l re­
mote control . . . . . . . . . . . . . . . . . . . 171 Proper occupant seating positions
.. ... 178
Proper safety belt position .......... . 195
Proper seating position Front passenger ............... .. 179
Occupants .. ............. .. .... . 178
Rear passengers 180
Q
Quartz clock ............ .. .. .. .. .. .. 10
Question What happens to u nbelted occupants? .. .
191
Why safety belts? .......... ..... . 189
R
Radiator fan ....................... 289
Rain sensor ....... ...... .. .. .. .. .. .. 69
Rain sensor defective .... .. ........... 35
Read ing lights ... ................ ... 68
Rear .................... .. ... ... 69
Rear fog lights . .. ........... ...... .. 64
Rear lid Escape handle .. .. .. .. .. .... .. ... 318
Opening and closingi ............. .. 47
Rear light Defective .................. .... .. 35
Rear window defogger ........ .. .. 92, 100
Rear-view camera Parking mode 2 ....... .... .. .... . 168
Parking mode 1 .............. .... 167 Rearview mirror
See Mirrors
.. .. .. ................ 72
Recirculation mode ..... ... .. ..... 91, 99
Red symbols ............ ... .. .. ..... 29
Refill engine oil . .. .. .. .... .......... 32
Refuelling .... ............... .. .. .. 276
Release lever for hood .. .... ... .. .. .. 279
Remote control garage door opener (Homelink ®) .......... ........ 171
Remote control key Unlocking and locking ............. 43
Remote rear lid release ............... 47
Repair manuals . .. ................ . 343
Repairs Airbag system ............. .... .. 213
Replacing a fuse .............. .... .. 328
Replacing bulbs . .. .. .. ............. 332
Replacing tires and wheels .... ....... 308
Replacing windshield wiper blades .. .... 71
Reporting Safety Defects . .. .. .. .. 185, 186
Reset b utton . . . . . . . . . . . . . . . . . . . . . . . . 11
Retractor .. .... .... .. .. .. .. ... .. .. 194
Rims Cast alloy ....................... 266
Rollbar
See Active rollover protect ion system 186
s
SAFE ................... .. .. .... .. . 11
Safe driving habits .............. .. .. 176

___________________________________________ A_ l::.. p _h _a_ b_ e_t _ic _a_ l_ in_ d _ e_x __ ffllll
Sa fety belt position .. .. .. ........ .... 195
Safety belts worn by pregnant women . ..
195
Safety belt pretensioner .............. 197
Service and disposal ........... ... 1 97
Safety belt warning light . . . . . . . . . 15, 189
Sa fety belts .. .. ............. .... .. . 193
B elt posi tioner ... .. ...... .. .. . .. . 193
cleaning . ... .. .. .. .. .. .. .... .... 2 72
Danger to passengers who do not wear a
safety be lt ........ .. .... .. .... .
191
Fas tening ... ............... .. .. . 194
Improperly wor n ................. 196
Not wo rn .............. ...... .. . 191
Sa fety belt position ..... .. ... .. .. . 195
Safety instructions ....... .... ... . 192
Securing child safety seats ..... ... . 231
Special considerations for pregnant
women ........................
195
Unfasten ing ..................... 196
Wa rning/ind ica tor ligh t .. .. .. .. .. . 189
W hy YOU MUST wear them . ... .. ... 1 89
Worn properly ... .. .. .. .. .... .... 1 91
Safety compliance sticker ......... ... . 340
Sa fety equipment .......... ...... .. . 176
Sa fe ty fea tures for o ccu pan t rest raint and
protection .... .. .. .. ...... .....
176
Safety g uidelines
Seat ad justment ... .. ..... .. .. .. .. 77
Safety inst ruct io ns
E ngine compa rtment ..............
280
for using child sa fe ty seats ......... 224
Controls and equip­
ment Safety first
for using safety belts
....... .. ... .. 192
Monitor ing t he Advanced A irbag System .
212
Seat (upper cabin heating) ............ 104
Seat ad justment
Dr iver's seat ............... .... .. .
77
Easy entry function ................ 79
Fro nt passenger's seat ... .. ... .... . 78
Fro nt seats . ...................... 77
Head restrai nts ..... ... .......... 180
Powe r .................. .. .... .. . 78
Seat be lts
See Safety belts .................. 189
Seat heati ng
Front seats ... .. ... ... .. .. .. .. ...
103
Rear seats ... .. .... .. .. ..... .... 103
Upper cabin heat ing .............. 104
Seat memory .. .. .. ............... ... 8 0
Seat symmetry ...................... 82
Seating capacity ... .... ... . ... .... .. 189
Seat ing pos itio n
Dr ive r ..........................
17 8
Fro nt passenge r ..... .. .. .. .. ..... 17 9
How to adjus t the fir on t seats .. ..... 17 9
Incorrect se at posi tion ... .. .. .. ... 18 1
Occupants ... .. .... ........ .. .. . 1 78
Rear passengers .... .. .. .. .. .. ... 180
Seats
Number of seats ...... .. ..... ....
189
Selective unlock feature .............. . 43
Selector leve r ... .. .... .. .. ..... .... 149
Service and disposal
Safety belt pretensioner ...........
197
Service interval disp lay ... .. ... ..... ... 20
Service posit ion fo r winds hield w ipers ... 70
Servotron ic
Power steering ...................
246
SET button .. .. ... .. ... . .... ... . .. ... 9
Shift buttons . . . . . . . . . . . . . . . . . .
153, 160
Side airbags
Description .. ...... ............. .
218
How they work ............ .... .. . 219
Side ass ist
Act ivat ing and deact ivat ing ... .. .. .
136
Description .... .. .. ..... .... . ... . 136
Informat ional and alert stage signals 138
Messages in instrument cluster display ..
14 3
O pe ra tion ... .. .. .. .. .... ... . ... . 138
Sa fety t ips . ... .. .. ...... .. .. ... . 14 3
Sensor detection area ..... ... .. .. . 13 7
Setting the signa l brightness . .. ... .
14 1
Side mar ke r li ghts ................ .. .. 63
Snow chains ... ................... . 312
Sockets ... .. .. .. ... ... .... ... . ... .. 8 6
Soft top
Care a nd cleani ng ................
263
Sound system disp lay
Driver information display ........ ..
19
So urces of informat io n about c hild rest rain ts
and their use ............ ...... .
238
Spare tire .... .. ... .... .. .. .. .. . ... . 319
Emergency release · · · · · · · · · · · · · · · l54 Speed rating letter code .............. 309
Selector lever mult itro nic® ........ ... 156 Speed warning system .............. .. 26
Vehicle operation Vehicle care Do-it-yourself service Technical data