2012 AUDI A3 brake sensor

14 Instrum ent s and w arn ing /indic ato r light s
Engine coolant level too low
ii
Engine oil sensor malfunction
engine coolant temperature too
¢page20
high ¢page 17
•
Battery voltage too h igh or too low
Electro-mechanical power assist
¢page20
¢page 17
II
Low fuel level
Clutch is overheating
¢page 21
¢page 101
•
Windshield washe r fl uid level low
Y ellow indicator lights ¢page 21
D
Yellow symbols indicate a priority 2 ma lf u nc-
~:~
Defective light bulb
tion -Warning!
¢page 21
Ji]
Electronic Stab ilizat ion Program
•
U SA mod els : Defective brake light
(ESP)
./¢page 18
¢page 21
I
Electronic Stabilization Program
•
Canada model s: Defective brake
(ESP)./
<=:>page 18 light ¢ page 21
~ USA mod els : anti-lock brake system
II
Dynamic headlight range cont ro l*
(ABS) ./ defective
<=:> page 18 defective ¢ page 21
Canada models: anti-lock brake sys--
[I]
•
Adaptive Light * defective
tern ./ (ABS) defective
¢page 18
¢page 21
•
Worn brake pads
m
Light/rain sensor defective (automat-
¢ page 19 ic headlights) * defective ¢ page 22
g
Tire pressure too low
B
Audi magnetic ride
¢page 19
¢page22
ll@I@ Tire pressure monitoring system
~
USA models: Speed warning 1
¢page 231
¢page 31
[m
Electronic power control./
¢page 19
•
Canada models : Speed warning 1
¢page 31
•
USA models: Malfunction Indicator
Lamp (MIL)
¢page 19
•
USA models: Speed warn ing 2
¢page31
Canada models: Malfunction Indica-
tor Lamp (MIL)
¢page 19
•
Canada models: Speed warning 2
¢page 31
II
Glow plug system ./ (diesel engine
Electro-mechanical power assist
only) (alternative to~ )
M ¢page 17
¢page20
.,
Engine speed limitation *
Diesel particulate filter
¢page20
¢page22
Ill
Check engine oil level
¢page20

244 Fuses and bulbs
Fuse Location, Instrument Panel left
Fuses which can be replaced.
Fig. 191 Cockp it driver 's s ide: fuse pane l layout
Note that the following table is accurate at
the time of going to pr ess and i s subject to
change . In the event of d iscrepancies, the la­
bel on the in side of the cover always take s
pr eceden ce .
The power seats are protected by circuit
break ers,
which automatically reset after a
few seconds after the ove rload has been rem­
ed ied .
Equipment
Manua l head light beam ad­
justment, a utomat ic head­
light beam adjustment, AFS
1 co ntrol m odule, engine
components, light switch
(switch lighting/illumina­
ti on), diagnosis socke t
2
3
4
5
6
8
9
Automatic transmission,
control module for CAN data
transfer (gateway), electro­
mechanical steering, shift
gate automatic transmis­
sion, fuel tank control unit,
engine control unit, brakes
control (A BS), Electronic
Stabili zation Program (ESP) ,
Anti-Slip Regulation (ASR)
Air bag
Air-conditioning (pressure
sensor, air quality sensor), button for Electronic Stabili ­
zation Program (ESP), Anti ­
Slip Regulat ion
(ASR), tire
pressure monitor display, oil
level senso r, back-up ligh t
s w itch, front se at he ati ng ,
p ark ing aid, sea t-occupancy
recognition (on USA vehi ­
cles), garage door opener,
automa tic mirror dimming,
headlight assistant, heated
windshield washer nozzles, air conditioning (control
module)
AFS headlights ( left si de)
AFS headlights (right side) Instr ument cluster
Navigation system, radio
system
1 0 digital
radio, cell phone, TV
equipment
11 Automatic mirror dimming,
headlight assistant
12 Central lock ing (front doors)
Central locking ( rear doors)
Amps
10
10
5
5
5
5
5
15
7 ,5
10
10
10

No. Equ ipment
Electronic Stabilization Pro-
14
gram (ESP) (control mod-
u le), shift gate automatic
transmission
15 Interior lights, reading
lights
Diagnostic connector, rain
sensor, air conditioning
16 (control module), t
ire pres-
sure monitor d isplay (con-
trol module)
I 17
Anti-theft alarm warning
system
18 D iagnose Starter
19 All Wheel D rive
20 Audi magnetic ride
Blower fan
23
Driver's
side power window,
front
24 Power outlet front
2S Rear window defogger
26 Power outlet in luggage
compartment
27 Fuel tank control module,
fuel pump
28 Power window, rear
33 Slidi ng/pop-up roof
36 Lumbar support
37 Heated sea ts, front
1 38
Passenger side power win-
dow, front
39 Specia l func tion interface
40 Starter
41 Rear window wiper
43 Body control module
47
Ce ll phone package (V OA in-
terface)
Automatic circuit breakers:
10
10
10
5
5
10
40
30
20
30
20
15
30
20 10
20
30
5
40
15
20 5
The electri c power w in dows and the e lectr ic
seat adjusters are pro tected with circu it
breake rs which reset automatically after the
circuit overload has been corrected.
Fu se s and bulb s 245
@ Tips
-Whenever rep lacing a fuse, always con­
sult the sticker on the inside of the f use
pane l cover. It contains the most up-to­
date information regarding the fuse ar­
rangement. If in doubt, ask your author­
ized Aud i Service adviso r.
- Some of the equipment items listed are
opt ional or only available on certa in
mode l configurations.
Fuse location, left side of engine
compartment
Fig . 192 En gine compar tment : fuse assig nment
,._
-d. a, a>
Check the fuse layout with the f use panel cov­
er removed
¢ page 243, Fuse cover in engine
comportment.
Some of the equipmen t items listed are op­
tiona l or only ava ilab le on certain model con ­
figurations.
Please note tha t the preced ing tab le was ac­
c u rate at the time of pr int ing and is subject to
c h ange.
No. Equipment
F2 Engine compone nts
F3 Battery voltage ESP valves, Anti-lock brake
F4 system (ABS) valves
Transmission control mod­
F5 ule
F6 Steering wheel e lectronics
Amps
20
5
20
15
s

246 Fuses and bulbs
I
I
I
No. Equipment
FlO Engine control module,
main relay
Control module for CAN da­
F12 ta transfer (gateway)
F13 Engine control module (die­
sel engine/gasoline engine)
Fl 4 Engine components (diesel
engine), ignition coils
FlS
F16
F17
F18 Preheating control module/
engine component, tank di­
agnosis, oxygen sensor
Body control module (right)
Horn
Audio amplifier
Flg Front windshield wiper sys­
tem
F 2 0
Water pump/volume regula­
tor valve
F22
F23
F24
F25
F26 Oxygen sensor (diesel en­
gine/gasoline engine)/vac­
uum pump
C
lutch pedal switch, brake
light switch
Engine relay, water pump/
engine components/volume regulator valve
Eng ine components, water
pump
Pump (ESP/ABS), ABS valve
Body control module (left)
-Amps
5/10
5
15,20,
25/30
20
5/10 30 15
--30
30
10/15, 20
10/15 /20
5
5/10
/15
10
40
-·-- --·-
30
40
F27 Secondary
air pump, pre-
heating control module
__ , ..
F29 Fuse assignment in the left­
side instrument pane l (spe-
cia l equipment)
Power supply relay terminal
15 so
so
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace burned
out bulbs for you.
It is becoming increasingly more and more
difficult to replace vehicle light bulbs since in
many cases, other parts of the car must first
be removed before you are able to get to the
bulb. This applies especially to the light bulbs
in the front of your ca r which you can only
reach through the engine compartment.
Sheet metal and bulb holders can have sharp
edges that can cause serious cuts, and parts
must be cor rectly taken apart and then prop­
erly put back together to help prevent break­
age of parts and long term damage from wa ­
ter that can enter housings that have not been
properly re sea led.
For your safety, we recommend that you have
your authorized Audi dea ler replace any bulbs
for you, since your dealer has the proper tools,
the correct bulbs and the expertise.
Gas discharge lamp s (Xenon lights)*:
Due to the high e lectr ica l voltage, have the
bulbs replaced by a qualified techn ic ian.
Head lights with Xenon light can be identified
by the high voltage sticker.
_& WARNING ~
Contact with high-vo ltage components of
the electrical system and improper re­
placement of gas discharge (Xenon) head­
light bulbs can cause serious personal in­
jury and death.
- Xenon bulbs are pressur ized and can ex­
plode when being changed.
- Changing Xenon lamps requires the spe­
cial tra ining, instructions and equip­
ment.
- On ly an authorized Audi dealer or other
qualified workshop should change the bulbs in gas discharge lamps .

264 Index .:..:..:..::....::..
...:..._ ___________________________ _
A
ABS
refer to Anti-lock brake system . ... .. . 164
Accessories .. ... .. ..... ... .. .. .. .. . 26 1
Acoust ic park assist ........ .. .. .... .. 93
AC (a ir cond itioner) ......... .. .. .. .. .. 81
Adapter for anti-theft wheel bolts . .. .. . 238
Adaptive light
defective . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adding Engine coolant .......... .... ..... . 204
Engine oil . ...... ....... ... .. .... . 200
Windshield washer fluid ............ 211
Addit ional accessories .......... .... . 261
Additional heater Climate controls . . . . . . . . . . . . . . . . . . . . 85
Additives Engine oil . ............... ... .. .. . 200
Adj ustab le steering wheel column .... .. 88
Adjusting Steer ing wheel column ........ .. .... 88
Adjusting front seats ........ ... .... .. 61
Advanced Airbag System
Components ... .......... .. .. .. .. . 129
Fr ont airbags ................ .... . 127
How the components work together .. 130
Monitoring ................. ..... . 133
PASS ENG ER A IR BAG OFF light .. .... . 133
A irbag
Warning/indicator lights ............. 16
A irbag system . . . . . . . . . . . . . . . . . 122, 139
Advanced Airbag System . . . . . . . . . . . . 126
Care . .. .. ............... .. .. .... . 135
Ch ildren . .... ........... .. .. .. .. . 144
Ch ild r estra ints ........... .. .. .. .. . 145
Components (front airbags) . ... .... . 129
Danger of fitting a child safety seat on
the front passenger seat . . . . . . . . . . . . 123
Disposal . ................. .. .... . 135
Front airbags . ........... .. .. .... . 126
How do the front airbags work? . . . . . . 131
H ow many airbags does my vehicle
have? ..... .......... ...... ... .. . 129
I mportant things to know .... .. .... . 122
I ndicator light ........... .. .. .. .. . 133
Monitoring ................. ..... . 133 Repairs ...
.... .. ............. .... 135
Side airbags ..... ................ . 137
S ide curtain airbags ................ 140
When must the system be inspected? 133
Airbag System
Weight-sensing mat .............. . 144
Air conditioner .. .. ................ .. 81
also refer to Climate controls .. .. .. .. . 79
Air conditioning Switching on and off ........... .. .. . 81
Air distribution Climate controls . ................. .. 83
Air outlets Adjusting the outlets for rapid defrost -
ing/defogging ... ................ .. 84
Climate controls . .............. ..... 84
Air quality sensor . . . . . . . . . . . . . . . . . . . . 82
Air recirculation . .. ... .......... .... . 83
Climate controls .. ............. .... . 82
When should I use the air recirculation? 82
Air recirculation mode Climate controls . ................. .. 82
All-wheel drive Winter tires ... .. ... .......... .... 227
Alloy wheels ...... ................ . 182
All Wheel Drive .... ............. .... 166
Alternator
refer to Generator ............. .. .. . 16
Aluminum alloy wheels .... ...... .... 182
Ambient lighting . . . . . . . . . . . . . . . . . . . . 52
Anti-lock brake system How the ABS system works ........ .. 164
Warning/ind icator lights ........ .. .. . 18
Anti -theft systems
Anti-Theft Alarm System . . . . . . . . . . . . . 42
Anti-theft wheel bolts ........... .... 238
Armrest Center armrest . . . . . . . . . . . . . . . . . . . . . 66
Rear armrest .... ................ .. 67
Asterisk What does it mean when something is
marked with an aster isk? ........ .... .. 6
Audi magnetic ride . . . . . . . . . . . . . . . 22, 9S
Description . . . . . . . . . . . . . . . . . . . . . . . . 95
Indicator light ... ....... ...... .. .. . 22
Audi Service Repair Manuals and Litera-
ture 259

272 Index
p
Paint
Touch-up ... .. ........ ... .. .. .... . 181
Paint no . .... ..... ..... ...... ... .. . 255
panoramic sliding sunroof ..... .. .. .. .. 45
Comfort closing .................... 46
to close . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
to open . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Park assist . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Park ing . .. .. .. . .......... .. .. .. .. .. 92
Automatic transmission . . . . . . . . . . . . . 98
Park ingbrake .............. ... .. .... 91
Setting and releasing . . . . . . . . . . . . . . . . 91
Park ing brake warning ................ 15
Park ing on a decline (downhill) ... .. .... 92
Park ing on an incline (uphill) ...... ..... 92
Particle filter
refer to Diesel particulate filter . . . . . . . 22
Parts rep lacement .................. 261
PASSENGER AIR BAG OF F light . .. .... . 133
Passive safety system ...... ... .. .... .
Pedals .. .. .. ................ ... .. .
Physical principles of a frontal collision . 103
108
114
Polishing
.. ... ............ .. .. .. .. . 180
Power locking switch ........... .. .... 39
Rearcenterconso~ ......... .. .. .. .. 40
Power locking system ................. 36
Conven ience close/open feature ... .. .. 44
Locking and unlocking the vehicle from
ins ide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Opening and closing the w indows .. .. . . 44
Operating locks from w ith key . . . . . . . . . 38
Rear lid .. .... ............. .. .... .. 40
Remote control . . . . . . . . . . . . . . . . 35, 37
Unlocking and locking vehicle ..... .. .. 3 7
Power outlets .............. .... ... .. 75
Power seat
Adjusting the seatback .............. 64
Adjustment ............. .. .. .. .. .. 63
Power steering
refer to Electro -mechanica l power as-
sist . . . . . . . . . .. . . . . . . . . . . . . . . 17, 165
Power sunroof
refer to panoramic slid ing sunroof . .. .. 45 Power window switches
....... ... .. .. . 43
In the driver's door .. ....... ... .. .. . 43
Reactivating the system .......... .. . 45
Pregnant women Spec ial considerations when wear ing a
safety belt . ..... ... ....... ... .. .. 118
Proper occupant seating positions ..... 104
Proper safety belt position . . . . . . . . . . . . 117
Proper seating position Front passenger .. ... .. ..... ... .. .. 105
Occupants ..... .. .. .... .... ... .. .. 104
Rear passengers . ... ............ ... 106
Q
Quartz clock . . . . . . . . . . . . . . . . . . . . . . . . 11
quatt ro ®
refer to All Wheel Dr ive .... ..... .. .. 166
Question Wha t happens to unbelted occupants? 114
Why safety belts? ................. 113
R
Radiator fan 205
Radio
Replacing ..... .. .. ............ ... 262
Rain sensor defective . . . . . . . . . . . . . . . . . 22
Reading light Rear . ........ .. ............. .... . 52
Reading lights Front ... .. .... .. ... .. .. ... ... .. .. . 51
Rear ... .. .... .. .. ... .. ... ... .. .. . 51
Rea r a rmrest . . . . . . . . . . . . . . . . . . . . . . . . 67
Rear lid Emergency release .................. 41
Locking/unlock ing ................ .. 40
Rear light defective ............. .... . 21
Rear power lock ing swi tch ........ .... . 40
Rear seat bottom .................. .. 67
Rear view mirror ... ... .. ..... ... .. .. . 54
Rear window defogger with air-cond it ion ing ........... .. .. . 85
Refuell ing .. .. .. .. ............. .. .. 192
Re lease lever for engine hood . . . . . . . . . 194