sensor AUDI A5 CABRIOLET 2010 Workshop Manual

-~_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. _.,

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

-Fuses and bulbs ..._ __________________________________________ _
Fuse Location, Instrument Panel left
Fig. 2 45 F use panel
lay out
Some o f the eq uipmen t items lis ted are op tiona l o r only a vailable on
certain mode l configurations .
Note that the following table is a ccurate at the time of going t o
press and is subject to change. In the event of discrepanc ies , the
label on the inside of the cover always take s pr eceden ce.
The powe r seats are pro te cted by circuit brea kers , which automa ti­
cally reset after a few seconds a fter the ov erload has been remed ied.
No. Consumer
Fuse panel (black)
1 Dynamic steering
2 Not used
3 Homelink
4 Lane Assist
5 Climate control
6 R ight head light range adjustment
7 Left headlight range adjustment
8 Vehicl e elect ric al sys tem co ntrol mo dule 1
9 Adaptive Cruise Control 5
5
10
5
5
5
5
5
No . Consumer Amps
10 Shift gate 5
1 1 Heate r washer fluid no zzles 5
1 2 Climate con trol
5
13 Cell phone prep 5
14 Airbag 5
15 Terminal 15 25
16 Terminal 15 engine
40
Fuse panel (brown)
1 Automatic dimm ing in terior rearv iew mir ror
5
2 Not used
3 Gaso line fuel pump 25
4 Auxiliary water pump 3.2L FSI 5
5 Left seat heati
ng with/witho ut seat heating
15/30
6 Electronic Stabiliza tion Program 10
7 Horn 25
8 Left door window regulator motor
30
9 Wiper motor 30
10 Electronic Stabilization Program 25
11 Driver side doo
r co ntro l modu le
15
12 Rain and light sensor 5
Fuse panel (red)
1 Not used
2 N ot u sed
3 Lumbar support
10
4 Dynamic steering
35

-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

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Instruments and controls ... .. .. .. .. .. . 8
General illustration .. .. .. ...... .... .
7
Interior lights ..... .. .... .. .. .. .. .... 68
Rear .... .. .. .. .. .. .. .. ..... ..... 68
Inte rva l wip ing .. .. .................. 69
Rai n sensor .. ........... ...... .. . 69
J
Jumper cables . .. ................. .. 334
Jump -start ing .. . ... .. .. .. .. .. .. .. .. 333
K
Key ........................... .... 37
Batte ry rep lacement ..... .. ........ 38
Key rep lacement ... ... .. .. .. .. .... 37
Mas ter key with remo te control ...... 37
Mech anica l key . .. .. .... .......... 39
Kick-down multitron ic ® ..... ... ..... .... ... 158
tiptro nic® ........ .............. 151
Knee airbags . ... .. .... .. .. .. ... . ... 2 16
Description . ... .. .. .. .. .. .... .. . 216
How they work . .. .... .. ......... 217
Important safety instructions . ..... 218
L
Lane ass ist
Activat ing and deactivat ing ... ..... 132
Description .. ....... ... .. ....... 132
Indicator in the instrument cluster display
133 Instrument cluster
indicator light .. . 132
N otes on inst rument cluster d isp lay . 132
steer ing wheel v ibration ........... 135
wa rning time ......... .. .. .. .. .. . 135
LATCH ................. .... .. ..... 235
Description . .. .... ......... .... . 237
Insta lling a child restraint .. .. ..... 238
Location ... ... ...... ... .. .. .. .. . 236
Mounting and releas ing the anchorage
hook .... ... ... .... .... .. .. ... 238
Leather . ...... .. ........... .. .... . 269
Clean ing ........ .... .. .. .. ..... 270
Lifting jack ... .... .. .. .. .. . ... .. ... 323
Li ft ing vehicle . ... .. .... ... . ... .... . 338
Light senso r ......... .... ...... ..... 62
Light senso r defective .. ...... .... .. .. 33
Ligh ting ........ ........... .... .. .. 62
Lights Coming home ...... .. .. .......... 64
Daytime running ligh ts .. ........ ... 64
Dr iv ing light control .. ... . ... .. .. .. 62
E mergency flashers ....... .... .. .. 66
E xter io r li gh ting ... ....... ...... .. 64
H igh beam .. .. ........... .. .. .. .. 6 7
H igh beam wa rning/indica tor light .. . 15
Leaving home . . . . . . . . . . . . . . . . . . . . 64
Switching on and of f ... ..... .. ... .. 62
T urn signals ... .. .... ...... ... .. .. 67
Xenon headlights ...... ........... 66
Loading the luggage compartment .. .. . 183
Locking Power locking switch ............ .. 45
Rear lid/trunk lid .................. 46 Remote control key
. . . . . . . . . . . . . . . . 42
Us ing the mechanical key . ....... ... 44
Low beams . . . . . . . . . . . . . . . . . . . . . . . . . 62
Lower unive rsal anchorage bars (Canada) . ..
235
Lower un ive rsal a nchorages (C anada) . .. 235
Luggage Stowing ............. ... .. .. .. .. 183
L u ggage compartment ... .. ... ... ... . 83
Increasing the s ize .. .............. 84
Loading ........ .......... .... .. . 83
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . 83
See also Load ing the luggage
compartment .. . .. ...... ... . ... 183
See also Luggage compartment . ... . 83
Luggage compartmen t lid
E mergency unlocking ....... .... .. . 47
M
Ma intenan ce ................. .. .. .. 343
Malfunction Indicato r Lamp (MIL) ... 15, 21
M aster key ..... .. ...... ..... ... . .. . 38
Battery rep lacement ... ... .. .. . ... . 38
Check light . ... .. .. ...... .. .. ... . 38
M echa nica l key .. .. .. .. .............. 39
Memory for dr iver's seat ............. . 80
Recalling settings . .. .. .. ......... . 81
Storing sett ings .... .............. 81
M il eage
Average ........ .... .. .... .. .. .. . 22
Instantaneous ................... . 22

ffl Alphabetical index ------',.__ ___________________________________ _
Power top . . . . . . . . . . . . . . . . . . . . . . . . . . SO
Care and clean ing .... ......... ... 263
Clos ing .................. .... .... 52
Convenience ope ning/closing .. ... ... 53
Emergency operation .. .. .... ...... 56
E rro r message . . . . . . . . . . . . . . . . . . . . 51
General informat io n ...... ...... .. . SO
Indica to r li gh t ... .... ..... ... . ... . 51
Ma lf u nct io n . . . . . . . . . . . . . . . . . . . . . . 51
Opening ... .. ...... .. .. .. ... . ... . 52
Var iab le power top storage bay . .. .. . 54
Wind deflector . .. .. .. .. .... ...... 54
Power window reg ulato rs
Convenien ce ope ning/closing .. ...... 48
Ma lf u nct ions ... .. ... ..... ... . ... . 49
Power window sw itches . .............. 47
Pregnan t women
Special considerat ions when wearing a
safety be lt .. ........... .. .. .. .. 196
Programming the Homelink ® universa l re -
mote control ... .... ..... .... . .. 17 2
Prope r occupant seat ing pos it ions . .. .. 1 78
Proper safety belt position .... .... . .. 1 96
Prope r seat ing pos ition
Front passenger .. .. .. .. .... ..... 179
O cc upan ts . ................... .. 178
Re ar passengers 180
Q
Quartz clo ck . ..... .. .. .. .. ..... ..... 10 Question
What happens to u nbelted occupants? .. .
19 2
Why safety belts? .... .. .. ... .. .. . 190
R
Radiator fan ....... ... .. .. . ... .... . 289
Rain sensor ............. .... .. .... .. 69
Rain sensor defect ive .... ... .......... 33
Read ing lights . .. .... ............. .. 68
Rea r ... .. .. .. .. .... ... . ... .... .. 68
Rear fog lights . .. ................ ... 63
Rear lid Escape handle .... .... ...... ..... 318
Ope ning and closingi ........... .. .. 46
Rear lig ht Remote rear lid release
... ... .... . ... . 46
Repa ir manua ls ... .. .. ...... ... . ... 34 3
Repairs Airbag system ............... ... . 214
Replacing a fuse . ............. .. .. .. 327
Rep lacing bulbs . .. .. .. .... ......... 331
Replacing tires and wheels . ... ... ... . 308
Reporting Safety Defects ... .. .. .. 185 , 186
Reset b utton . . . . . . . . . . . . . . . . . . . . . . . . 11
Retractor .. ........... ...... .... .. 195
Rims Cast a lloy .... .. ...... .. ... .. .. .. 266
Rollbar
See Active rollove r protect ion system 187
s
Defective . . . . . . . . . . . . . . . . . . . . . . . . 34
Rear window defogger ........ .. .. 92, 100 SAF E · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1
1
Safe dr iv ing habits ............ .. .. .. 176
Rear-v iew camera
Park ing mode 2 ....... .. .. .. .. .. .
Park ing mode 1 ........... .. .... .
Rearview m irror 169
168
S
ee M irrors ... ... .... ..... ... .. .. 72
Recircu lation mode . .............. 91, 99
Red symbols ...... ...... ...... ...... 27
Refi ll engi ne oil ... .. .. .. .... .. .. .... 30
Refuelling ............... .. . ... ... . 276
Release lever for hood . .. ... .. .. .... . 279
Remote cont rol ga rage door opener
(Homelink ®) ........ .... .. ..... 172
Remote cont rol key
Unloc king and lock ing .. ........... 42 Sa
fety belt posi tion . ... ...... ... . ... 196
Sa fety belts wo rn by pregnant women .. .
196
Safety belt pretensioner . . . . . . . . . . . . . 198
Service and disposal . ....... .... .. 198
Sa fety belt w arning light . .. .. .. .. . 15, 190
Safety belts ..... .. .. .. .. .. ........ 194
Belt positioner .... ....... ... .. .. 194
cleaning ................. ... ... . 272
Dange r to passengers who do not wear a
sa fety belt ........ ...... .. .. .. 192
Fastening ... ....... ...... ...... 195
Improperly wor n ................. 197
Not worn .. .. ... ..... .. ... .. .. .. 192

___________________________________________ A_ l::.. p _h _a_ b_ e_t _ic _a_ l_ in_ d _ e_x __ ffllll
Safety belt position ...... .. .. .. .. . 196
Safety instructions .............. . 193
Securing child safety seats ......... 232
Special considerations for pregnant
women ....................... .
196
Unfastening ........ ...... .. .. .. . 197
Warning/indicator light ...... ..... 190
Why YOU MUST wear them ...... .. . 190
Worn properly ... .. .. .. .. .... .... 193
Safety compliance sticker ............. 340
Safety equipment ................ .. . 176
Safety features for occupant restraint and
protection .. .. .... .. ...... .....
176
Safety guidelines
Seat adjustment ......... ... .. .. ..
77
Safety instructions
Engine compartment .............. 280
for using child safety seats ...... .. . 225
for using safety belts ........... .. . 193
Monitoring the Advanced Airbag System .
213
Seat (upper cabin heating) ....... .. .. . 104
Seat adjustment
Driver's seat .............. .. .. .. ..
77
Easy entry function .. .. .. .. .. .... .. 79
Front passenger's seat ......... .. .. 78
Front seats .............. ... .. .. .. 77
Head restraints .............. .... 181
Power .. .. .. ....... ..... ... .. .. .. 78
Seat be lts
See Safety be lts ......... .. .... .. . 190
Controls and equip­
ment Safety first
Seat heating
Front seats . ........ ... ... .. .....
103
Rear seats . ..................... 1 03
Upper cabin heat ing . .. ... ........ 104
Seat memory .. .. .. .................. 80
Seating capacity . .. ...... .. ......... 190
Seating position
Dr iver ..................... ... ..
17 8
Front passenger ..... .. .. .. ... ... . 179
How to adjust the fir ont seats .. ..... 179
Incorrect seat position ... .. .. ..... 181
Occupants ...................... 17 8
Rear passengers ... . .. .. .........
180
Seats
Number of seats .............. ...
190
Selective unlock feature ............... 42
Selector lever ... .......... ......... 149
Emergency release ........... ....
154
Selector lever multitronic ® ....... .. .. 157
Service and disposal
Safety belt pretensioner . ..........
198
Service interval display .. .............. 20
Service position for windshield wipers .. . 70
Servotronic
Power steering ..... ..............
246
SET button ...... ........... .. .. .. .. .. 9
Shift buttons .. .. .. ............
153, 160
Side airbags
Description ......... .. .. .. .......
219
How they work ................ ... 220
S ide assist
Act ivat ing and deactivating ........
136
Description . .... .... .. .. .. .. .. .. . 136
Informational and alert stage signals 138
Messages in instrument cluster display ..
143
Operation ....................... 138
Safety tips ........ ............ .. 143
Sensor detection area ...... .. .. .. . 137
Setting the signal brightness ...... . 141
Side marker lights ............ ........ 62
Snow chains ..... .. ................ 312
Sockets ... ......................... 85
Soft top
Care and cleaning .. ............. .
263
Sound system display
Driver information display ..........
19
Sources of information about child restraints
and their use ... ... ..... ... . ... .
239
Spare tire ........... ... . .... .... .. . 319
Speed rating le tter code ............ ..
309
Speed warning system ................ 25
Speedometer .. ..................... 11
Starting engine
Emergency key ............ ...... ..
40
Starting from rest .... ... . .. .. .... .. . 111
Starting off with a trailer ............. 112
Starting the engine .................. 106
Steering . . . . . . . . . . . . . . . . . . . . . . . . 13, 32
Adjusting the steering wheel ...... . 105
Locking the steering ....... .. .... . 106
Malfunction ........ ...... ...... .. 31
Steering wheel column adjusting ...... 105
Steps for determining correct load limit . 305
Stopping the engine ... .............. 107
Vehicle operation Vehicle care Do-it-yourself service Technical data