2011 AUDI A5 COUPE sensor

Intelligent t echnology
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Electronic differential lock (EDL)
The elec tronic differen tial lock monitors the rotational
speed of the drive wheels.
G en era l not es
The electronic differentia l lock (EDL) helps the ca r to sta rt moving,
accelerate and climb a gradient on surfaces provid ing poor or almost
no grip . W ithout ED L, this would be d iff icu lt, if not impossible.
How the sy stem works
The EDL operates automatically. It mo nitors the rota tional speed of
wheels with the help of the ABS sensors~
page 241. If a not iceab le
slip is detected at the wheels (e.g . on slippery g round on one side),
the spinn ing wheels are braked and power is transferred to the other
wheels . This is done up to a speed of about 60 mph (100 km/h).
No ises from the brake system signal that wheel sp in is being
controlled.
Driv ing off
When d riving off, always be s ure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface with
less grip, apply
plenty of throttle until the car starts to move.
O verheating of bra kes
To prevent the disc b rake of the bra ked wheel from ove rhea ting if
subjected to excessive loads on this wheel, the EDL cuts out tempo­
ra rily. The vehicle remains operat io nal and be haves in the same way
as a veh icle without EDL.
As soon as the brake has coo led down, EDL switches on again auto ­
matically.
& WARNING
• When ac ce le rating on s lippery surfa ce s, su ch as on ic e or snow,
alwa ys be ca reful when depre ssing the accele rator pedal. Even
& W ARNING (continue d)
with the EDL working , the dri ve wheels c an spin and reduce your
ability to contr ol your car . Ri sk of cra sh!
• The inc reased s afety afforded by E DL does not me an that you
can take safety ri sks. Alwa ys adapt your d rivin g style to the r oad
conditions and t raffic situation .
[ i ] Tips
If a fau lt occurs in the ABS, the EDL is also not funct ion ing. This is
ind ic a ted by the ABS warn ing light ~
page 17. •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Sl ip Regu lation System (ASR) is integrated in the electronic
stabiliza tion prog ram ( ESP) . When the ve hicle s tarts up and acceler­
ates, the wheels are prevented from sp inning by adjusting the engine
powe r to match the amount of g rip available from the road surface .
How the system works
ASR performs au toma tic a lly, i.e. witho ut the dr ive r's intervent ion.
With the aid of the ABS sensors~
page 241, ASR monitors the speed
of the driven wheels. If the whee ls start to spi n, eng ine torq ue is
reduced automatically unti l the tires find enough grip to lock onto
t he road s urface . The system is active across the en tire spee d range.
Th e ASR works in con ju nction with the ABS .
If a malfunction shou ld
occur in the ABS, the ASR wi ll also be out of action.
Act ivating
T he ESP is automatica lly activated when the engine is started and it
performs a self-test . You can act ivate a deact ivated ASR if required by _,,

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 303, "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 247.
& 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,__ a_n_ d_ f_ i_ l _li _n _,g;._ __________________________________________ _
0 Note
• Before w inter 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 yo u live in a region where
the winter is extremely cold.
If necessary, increase the proportion of
coolant 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
engine coolant. Adding radiator repair flu id may adversely affect the
function and performance of your cooling system and cou ld 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. 208 Engine
co mpartment : Coolant
expansion tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS~ & in "Working in
the engine compartment" on
page 275.
-Turn off the ignition.
- Read the engine coolant level from the coolant expansion
tank~ fig. 208 . 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 locat io n of the coolant expansion tank can be seen in the engine
compartment illustration~
page 276.
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 34 will blink until you add coolant and the level has
been resto red 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 coo ling system. In the event of
coolant loss, the cooling 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
coo lant 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.

Tires and wheels -_____________________ ,,...
Applie s to vehicl es: wi th t ir e pr essure mon itor ing syste m
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.
F ig . 217 Displ ay:
un derinfl ation
wa rn ing
Fi g. 218 Disp la y:
S yst em m alf unction
Us ing the A BS sensors, the tire pressure monitor ing system com pa res
the tire tread circumference and vibrat ion characterist ics of the ind i­
vidual tires .
If the pressure decreases in one or more tires, this is indi-
cated in the instrument cluster with a warn ing symbol and a
message => fig . 217 . T he driver message in the display goes out after
5 seconds. T he driver message can be d isp layed again by p ressing the
[SETj button. If on ly one tire is affected, the display will indicate its
posi tion.
Vehicle OP-eration T
he tire pressure mon itor ing system must be reset via radio or MMI*
e ach t ime the press ures a re adjus ted (e.g . when switching between
partia l a nd full load pressure) or after chang ing or replacing a tire on
your vehicle =>
page 312. You ca n find the recommended tire pres ­
sures for your vehicle on the label on dr iver's side B-p illar
=> page 295.
Tir e tread ci rcumference and vibrat ion ch aracterist ics ca n change and
cause a tire pressure warn ing if:
• the tire pressure in one o r more tires is too low,
• the t ire has structura l damage,
• t he ti re pressure w as changed, wheels rotated or replaced bu t the
TP MS was not reset=>
page 312.
Warning symbols
• Loss of pressure in at least one tire => & . Check the tire or tires
and replace or repa ir if necessary . The ind icator light
I in the instru­
ment cl uster a lso illuminates =>
page 14. Check/correct the pres­
s u res of a ll four tires and reset TPMS via r adio or MM I*.
il (T ire Pressure Monitoring System) Tire pressure! System
malfunction.
If appears after sw itching the ignition on o r while dr iv ing
=> page 311 , fig. 218 and the ind icator light (1 in the instrument
cl uster blinks for a pprox imately one minu te and then s tays on, there
is a system malfunction. See your author ized Audi dealer as soon as
poss ible.
& WARNING
• If the tire pressure indi cator appears in the instrument cluster
display, one or more of your tires is significantly under -inflated.
Reduce your speed immediately and avoid any hard steering or
braking maneuvers . Stop as soon as possible and check the tires
and their pre ssure s. Inflate the tire pre ssure to the proper pre s­
sur e as ind icated on the vehicle's tire pres sure label =>
page 295.
Driving on a significantly under-inflated tire causes the tire to _,,.
Vehicle care Do-it-yourselt service iTechnical data

-Fuses and bulbs
~-;,_;__:_:_;..:..:.:....::~=---------------------------
Left cockpit fuse assignment
No. C onsumer
Fu se p anel@ (bla ck )
1 Dynamic steering
3 Homelink
5 Climate control
6 Right headlight range adjustment
7 Left headlight range adjustment
F ig. 229 Left cockpit:
f use panel w ith p lastic
clip
Amps
5
5
5
8 Vehicle electrical system control module 1
5
5
5
5 9 Adaptive Cruise Control No. Con
sumer Amps
10 Shift gate 5
11 Heater washer fluid nozzles 5
12 Climate control 5
13 Cell phone prep 5
14 A irbag 5
15 Terminal 15 25
16 Terminal 15 engine
40
Fuse panel ® (brow n)
1 Automatic dimming interior rearv
iew mirror
5
2 Clutch sensor 5
3 Gasoline fuel pump
25
5 Left
seat heating with/without seat heating
15/30
6 Elect ronic Stabilization Program 10
7 Horn
25
8 Left door w
indow regulator motor
30
9 Wiper motor 30
10 Electronic Stabilization Program 25
11 Left doors 15
12 Ra in and light sensor 5
Fuse p an el © (red )
3 Lumbar support 10
4 Dynamic steering 35
5 Antenna (Avant)
5
6 Vehicle electrical system control module 1 35
7 Vehicle electrical system control modu le 1 20

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Parking ........ ..... .. .. .... ... 117 Hood .. .. .. .. .. .... ... . ... .. .. . 274
Releasing and clos ing .. .. ......... 116 Starting ........... .. .. .. ....... 112
Starting assist ................ ... 117 Sta rting with jumpe rr cab les ........ 328
Starting from rest . .. ...... ..... .. 117 Stopp ing ... .. ..... .... .. .. .. .. . 113
Sta rting off w ith a t railer ... . .. .. .. 118
Engine compartment
W arning/ind icator lights . .......... 18
Safety instruct ions .... .. .. .. .. ... 275
Elect ronic differential lock (EDL) Working the eng ine compartment . . 275
How the system works .... ... .. ... 238
Engine coo lant system . .. ... . ... .... . 281
Warning/ind icator lights . .......... 17
Adding coolant ... .... .. . .. ... .. . 283
Electronic immobilizer .. .. . ... ... .. ... 45
Checking coo la nt level . ..... ..... . 282
Electro nic powe r contro l Checking the engine coo
lant level . .. 282
( E PC) war ning/ indicato r light .. ...... 15 Ma
lfunction ... ................. .. 34
Electronic stabilization program (ESP) Radiator fan ...
...... .. .. .. .. ... 284
How the system works ............ 236 Engine coo
lant temperature
Wa rning/ind icator lights . .......... 15 T
emperat ure gauge . .... . ... .. .. . . 10
Emergency braking ..... .. .. .. .. .. ... 118 Engine data
... ... ...... ... .. .. .. .. . 339
Emergency flasher . . . . . . . . . . . . . . . . . . . 62
Engine hood
W arning/ind icator lights ... .. ... ... 16 Closing ........
...... ...... ..... 275
E mergency key .. ................ .... 42 How to re
lease the hood .......... . 2 7 4
Starting eng ine . .. .... .. ..... ..... 45 Engine oil
.... ..... ..... .... .. .. .. . 277
Emergency locking of the doors . ... .. .. 51 Adding ...
... .... .... .... ... . ... 279
Eme rgency release
Sele ctor leve r ............. .... .. 156 Add
itives ...... .. .. .. ...... .. ... 279
Changing ............ .... .. ..... 280
E mergency starting .. .. ... ....... ... 328
Emergency towing ..... .. .. ..... .... 331
Emergency u nlocking
Ignition key .. .... ............. ... 44
Energy management .......... .... .. 243
Battery power ................... 245
Dr iver not ification ..... .. .. ... .. .. 245 Check o
il level ............ .. .... . 279
Consumption ....... .. .. .. ....... 279
Oil consumption .... .... . ... .. .. . 278
Oi l grades .. ..... ............. .. 277
Specification and viscosity .. .. .. .. . 277
E ngine oil leve l ... .... ............. .. 40
E ngine oil pressure
M al fun ctio n ... ........... ...... .. 35
Engine
Compartment .. .. .. .. . ... ... .. .. 276
Coolant ...... .......... ...... .. 281 Engine oil sensor defec
tive ..... .. .. ... 40
Engine speed limitatiorn . ....... ..... .. 40 Environment
Break-in per iod ......... ... .. .. .. 246
Catalytic converte r ............... 24 7
Disposing of you r vehicl e battery .. .. 289
Dr iv ing at hig h speeds ............ 249
Dr iv ing to mi nimize poll ution and noise ..
248
Fuel .. .. .... ............. ...... 271
Fuel economy .. .... .... ... .. .. .. 248
Leaks under you r vehicle ... .. ... .. 275
Lett ing the vehicle stand and warm up ...
249
Proper disposa l of dra ined brake fluid 285
Proper disposal of d ra ined engine coo lant
283
Proper disposal of drained engine oil 279,
280
Recycl ing used e ng ine o il ... .. .. .. . 279
Unleaded fue l ............ ... .. .. 269
What should I do w it h an old batte ry?
289
E nvironmen tal note
Re ar w indow defogger ...... .. 100, 1 06
Roo f rack . . . . . . . . . . . . . . . . . . . . . . . . 90
EPC See Elect ronic power con tro l ........ 15
ESP See Electronic stabilization program (ESP)
15
Event Data Recorde r (EDR) 236
Exhaust tai l pipes
Cleaning ... .... ... .. . .... .... .. 263
E xp ans ion tank .. .. .. .. ............. 282
Eyeglasses compartment ......... . ... . 94

-Alphabetical inde x lffi'f ___,__ ______________ _
Heating
Deluxe automatic climate control plus
101
Heavy clothing and safety belts . ... ... . 184
High beam ................ ...... .. . 62
Warning/indicator lights . .......... 17
H igh vo ltage warning labe l ......... .. 336
HomeL ink® un iversal remote control . .. 166
Hood
Opening ................ ...... ..
274
Release lever ............ .. .... .. 2 7 4
Horn ................. .. .. .. .. .... .. 9
How are child restraint system anchors related to chi ld safety ..... .............
229
How many a irbags does my vehicle have? .. ..
197
How often should I check my tire pressures? .
298
How safety belt pretensioners work ... . 188
Indicator lights ... .......... ..... .. .. 14
Airbag system .......... .. ... 201, 202
PASSENGER AIR BAG OFF .......... 202
Infant seats ....... ... .. .... ....... 221
Ins ide rear view mirror ........ .. .. .. .. 68
Installing child safety seats
Safety belts ............... ... .. .
225
Installing the upper tether strap on the
anchorage ... .... ... ..... .... ..
233
Instrument lighting .......... .. .. .. .. 61
Instruments and controls ..... .. .... .. 10
General illustration .............. ... 9
Interior lights Dimming . .... ... .. .. .. .. .. .. .. ..
63
Front .. ................. .. .. .. .. 63
Rear ... ................. .. .. .. .. 64
Interval wiping . .. .. ............... .. 65
Rain sensor ......................
65
Hydroplaning . .. ............ ....... 302 J
I Jumper cables .. .. .................. 329
Jump-sta rting ................ .... .. 328
Ignition key ........ ............. ... 112
Emergency unlocking .. ....... ..... 44 K
Ignition lock .. .... .. .. .... ......... 112
Malfunction ............. ...... 36, 40 Key ........ ...... ... .. .... ........ 42
Immobilizer . ... ..... ............... 42 Battery replacement ............... 43
Important things to do before driving .. 171
Improperly worn safety belts ......... 188
Indicato r light
Dynamic steer ing .......... ....
15, 37
Key replacement ..... ............. 42
Master key with remote control .. .. .. 42
Mechanica l key ................. .. 44
Kick-down tiptronic ....... .............. ...
154
Knee airbags .. .... .... ...... ... .. .. 206
Description .. .. .. ............... 206
How they work .............. ... . 207
Important safety instructions ...... 208
L
LATCH 229
Description .. ...... ............. 230
Insta lling a child restraint ....... .. 231
Location . ........... .. .... .... .. 230
Mounting and releasing the anchorage
hook .. ...... .. .. ..... .. .. .. ..
231
Leather .................... ... .. .. 264
Cleaning ........... .. .... .... .. 265
Lifting jack .......... ... . .. .... .. .. 319
Lifting vehicle ...................... 333
Light
Coming home ............ ... ... ..
60
Daytime running lights ............. 60
Driving light control ............... 58
Exterior lighting .. .. .... ......... . 60
Leaving home ....... .. .. .. .... .. . 60
Switching on and off ....... ... .. .. . 58
Light sensor ................ ... .. .. . 58
Light sensor defective ...... .. .. ... ... 38
Lighting ..... .. .. .... .............. 58
Lights
Emergency flashers . . . . . . . . . . . . . . .
62
High beam ...... . .. .............. 62
High beam warning/indicator light ... 17
Turn signals .................... .. 62
Xenon headlights . .. .... .......... 61

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Panoramic tilting sunroof .... . .. .. .. .. 55
Mechanical emergency closing function ..
56
Til ting and closing ............ ... . 55
Park assist ....... ...... .... .. .. .. .. 158
Rear .. .. .. .. .. ........ ......... 158
Rear, w ith rear view camera ........ 160
Parking . ... .. .. .. .. .. ... ..... ..... 117
Automatic transm ission ........... 151
Valet parking ............. ... .. .. . 55
Parking brake .... ... ..... .......... 116
See also E lectromechanical parking brake
116
Parking system .. ................. .. 158
Rear . ... .. .. .. .. .. ... ..... ..... 158
Rear , w ith rear view camera ........ 160
Parking System (rear)
Adjusting the warning tones ....... 159
Park ing system (rear) ........ ...... .. 158
Parking system (rear, with rear view camera) Parking mode 1 ..... ............. 162
Park ing mode 2 ..... .......... ... 163
Safety precautions ...... ..... .. .. 160
Switching on/off .. .. .. .. .... .... . 162
Switching rear v iew camera on/off .. 165
Parts replacement .. ... .. .. .. .. .. ... 342
PASSENGER AIR BAG OF F light ... .. .. . 202
Passive safety system ...... ........ .. 170
Pedals . .. .... .. ................... 176
Physical p rinciples of a frontal coll ision . 182
Polishing .......... ......... ....... 259
Pollen filter Deluxe automatic climate control ... . 95 Pollutant filter
Deluxe automatic climate control 95
Power locking switch ................. 50
Power locking system ............ .. .. 45
Emergency locking ........ .. .. .. .. 51
Locking and unlock ing the veh icle from
inside ............. .... .. .... .. 50
Luggage compartment lid .... ... ... 51
Selective unlock feature . ........... 47
Settings ........ ... .. .. .......... 47
Unlocking and lock ing vehicle ....... 47
Power locks
Windows open and closed .... .... .. 54
Power steering .............. 15, 37,242
Power window regulators Conven ience open ing/closing ....... 54
Ma lfunctions ......... .... .. .. .. .. 54
Power window switches ....... .. .. .... 53
Pregnant women Special considerations when wearing a safety belt ............... ...... 187
Programming the Homelink ® universal re-
mote control . ... ... ... .. .. .. ... 166
Proper occupant seating positions ..... 172
Proper safety belt position 186
Proper seating position Front passenger ............... .. 173
Occupants .. .. .. ... ...... .. ... .. 172
Rear passengers 174
Q
Quartz clock ............ .... .. .. .. .. 12 Question
What happens to unbelted occupants? . ..
183
Why safety belts? ............... . 181
R
Radiator fan ............ ... .. .... .. 284
Rain sensor . ................. ...... . 65
Rain sensor defective . .. .... .......... 38
Reading lights
Front ... ........................ 63
Rear ... ......................... 64
Rear fog lights .. .. .. .. .. .. .......... 59
Rear lid
See Luggage compartment ........ . 51
Rear light Defective ........... ...... .... .. . 39
Rear view camera Parking mode 2 ............ .. .. .. 163
Parking mode 1 ...... .. .... .. .. .. 162
Rear view mirror Inside rear view mirror ... .. ... ... .. 68
See also Mirrors .................. 68
Rear window defogger ........ ... 100, 106
Rear window sun shade . ......... .... . 65
Recirculation mode Deluxe automatic climate control . . . . 99
Deluxe automatic climate control plus ...
105
Red symbols ...... .. .. ... .. .... .. .. . 32
Refill engine oil . .... .. .... .......... 35
Refuelling .. .. .. ....... .. .... .. .. .. 271