2011 AUDI A5 COUPE brake sensor
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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 _,,
Page 352 of 362
___ 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
Page 356 of 362
___ 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