brake sensor AUDI Q3 2015 Owners Manual

12 Instruments and warning/indicator lights
compartment, stop the engine and let it
cool down. Always exercise extreme cau­
tion when work ing under the hood
c::> page 179.
Overview
Some ind icator lights turn on briefly to check
the function of that system when you switch
the ign ition on. These systems are ma rked
with a ../ in the following tables. If one of
these indicator lights does not turn on, there
is a malfunction in that system.
Red indicator lights
USA models:
Brake system ../
c::>page 13
Canada models:
Brake system ../
c::>page 13
USA models:
Electromechanical parking brake
c::>page 14
Canada models:
Electromechanical parking brake
c::>page 14
Safety belts
c::>page 16
Engine cooling system
c::>page 14
Engine oil pressure
c::>page 15
Battery
c::>page 15
Electromechanical Steering../
¢ page 158
Steering column lock
¢page 16
Yellow indicator lights
Electronic Stabilization Control
(ESC) ../
¢page 16
TPMS
Electronic Stabilization Control
(ESC) ../
¢page 16
USA models:
Anti-lock braking system (ABS) de­
fective../
¢page 16
Canada models:
Anti-lock braking system (ABS) de ­
fective../
c::> page 16
Safety systems ../
c::> page 16
Worn brake pads
c::> page 17
Electromechanical park ing brake
¢ page 14
Tire pressure monitoring
system../
¢page 213
Tire pressure monitoring system
¢page 213
Elect ronic power control../
c::> page 17
• M
alfunct ion ind icator Lamp (MIL)../ ¢page 17
Engine speed limitat ion
c::> page 17
- Engine oil level
- c::>pagel7
• ·
-. Engine oil level _
1 c::> page 17
• Engine oil sensor c::> page 18
Battery
c::> page 15
-
Tank system
... c::> page 18
• Windshield
washer fluid level c::> page 18
- Ignition lock
IYiiil c::> page 18

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Electromechanical steering
¢page 158
Steering column lock
¢page 16
Convenience key
¢page 70
• Convenience
key ¢page 69
Battery in remote control key
¢ page 30
Defective light bulb warn ing
¢ page 18
Headlight range control
¢page 18
- Adaptive light
- ¢page18
Light-/rain sensor
¢ page 19
Transmission
¢page 85
Adaptive dampers
USA models:
Speed warning system
¢page 73
Canada models:
Speed wa rning system
¢page 73
Other indicator lights
•iii
Turn
signals
¢ page41
• T
rai ler turn signal assembly ¢ page 19
• USA models:
Cruise control
¢
page 73
Canada models: Cruise control
¢page 73
Hill descent control
¢page 155
Instruments and warning/indicator lights 13
.Hi gh beam
• ¢ page 40, ¢ page 41
• High beam assist*
¢page41
BRAKE /((D ) Brake system
If the indicator light turns on, there is a mal­
function in the brake system.
• (USA models)/ . (Canada models) Stop
vehicle and check brake fluid level
Stop the veh icle and check the brake fluid lev ­
el. See your authorized Aud i dealer or quali­
fied repa ir facility, if necessary.
• (USA models)/ . (Canada models)
Warning! Fault in brakes. Contact dealer .
If the ABS indicator light t1l1 (USA models)/
fiJ (Canada models), the ESP indicator light
Iii and the brake system ind icator light
• (USA models)/ . (Canada models) turn
on and this message appears, t he ABS, ESP
and braking distr ibution are not working¢&.
Drive to your authorized Audi dealer or quali­
fied repa ir facility immed iately to have the
malfunction corrected ¢ & .
• (USA models)/ . (Canada models) Park­
ing brake: System fault! See owner's man­
ual.
- If the indicator light and the message ap­
pear
when stationary or after switching the
ignition on,
check if you can release the
park ing brake . After releasing the parking
brake, carefully drive to your author ized
Audi dea le r im mediately to have the mal­
function corrected. If you can not release the
park ing brake , seek professional assistance.
- If the ind icator light and the message ap­
pea r
while driving , the emergency brak ing
function may not be available. It may not be
possible to set the parking brake or release
it once it has been set. Seek pro fessiona l as-
sistance. .,.

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Vehicle care and cleaning 171
Rinse the vehicle thoroughly again and let it
air dry. Remove any water residue using a
shammy .
A WARNING
- Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operator to reduce the risk
of accidents .
- To reduce the r isk of cuts, protect your­
self from sharp metal components when
wash ing the underbody or the inside of
the wheel housings.
- After washing the vehicle, the braking ef­
fect may be de layed due to moisture on
the brake rotors or ice in the winter. The
brakes must be dried first with a few
careful brake applications.
([) Note
-If you wash the vehicle in an automatic
car wash, you must fold the exterior m ir­
rors in to reduce the ris k of damage to
the mirrors. Power folding exterior mir ­
rors* must only be folded in and out us ­
ing the power folding function. -
To prevent paint damage, do not wash
the vehicle in direct sunlight.
- To reduce the risk of damage to the sur­
face, do not use insect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted vehicle compo­
nents:
- To reduce the risk of damage to the
surface, do not use polishing agents or
hard wax.
- Never use car wash cycles that apply
protective wax.
It can destroy the
matte finish effect .
- Do not place any stickers or magnet ic
signs on vehicle parts painted w ith
matte fin ish paint. The paint could be
damaged when the stickers or magnets
are removed.
@ For the sake of the environment
Only wash the vehicle in facilities spec ially
designed for that purpose . This will red uce
the r isk of dirty water contam inated with
oil from entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehi­
cle components, refer to the following tab les .
The information contained there is simply rec­
ommendations . For questions or for compo- nents that are not listed,
refer to an author­
ized Audi dealer or qualified workshop. A lso
follow the information found in ¢ ,& .
Cleaning exterior
Component Situation Solution
Wiper blades
Dirty Q page 4 7, Cleaning windshield wiper blades
Headlights/ Dirty Soft sponge with
a m ild soap solutiona>
tail lights
Sensors/
Dirty Sensors: soft cloth with a solvent -free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning
solution
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road sa lt Water
Brake dust Acid-free special cleaning solution
Exhaust tail Road salt Water, cleaning solut ion suitable for stainless steel, if
pipes necessary
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No.
13
14
15
16
17
18
19
20
23
26
27
28
Consumer
A ir quality/outside air sen-
sor, heated washer jets,
Electronic Stabilization Con-
trol (button), reversing
light, electromechanical
parking brake, o il level sen-
sor, climate control, seat oc-
cup ied recognit ion system,
seat heating, contro ls in
center console, automatic
dimming mirrors
Eng ine control u nit, auto-
matic transmiss ion, bra ke
l ights, electro-mechanical
power steer ing, gateway
control un it, towing bracket
control unit, ESC contro l
unit, light switch, damping
control un it
H eadlight leveling, park ing
brake contro l unit, inst ru-
men t lighting, headlights,
diagnostic connector, adap-
tive light control unit, heat-
er for crankcase, air mass
meter, relay for electr ical
sockets, DC/DC converter
Parking aid
Reversing camera for park-
i ng a id
TV tuner
Eng ine starter cont ro l unit,
DC/DC converter
ESC control unit, air condi-
tioner controls, interface for
spec ial functions
e lectromechanical parking
b rake switch, switches for
interior lighting (front), di-
agnostic connector, light
switch, rain and light sensor,
humidity sensor
Rear window wiper
Starter control un it
Radio/MM I
Amps
5
7,5 10 5
5
5 5
s
10
15
40
15/7,5
Fu ses and bulb s 225
No. Consumer Amps
29
Supply for reversing camera
15 for park ing aid and TV tuner
30 Infot ainment 5
31
Infotainment 5
32
Instr ument cluster 5
33
Automatic dimming rear-
view m irror
10
E lectrica l socket in front
36 cabin, electrical socket in 20
luggage compartment
37 Electr ica l soc ket i n rear cab-
20 in, ciga rette lighter
38 Automatic transmission 15
44
Rear window hea ting 30
45
Parking brake control unit 20
48
Power-operated rear lid 30
so B lower 40
51
Parking brake control unit 20
52
On board supply control unit 20
53
Seat heating, front 30
54
Panoram ic sun roof 20
55
Sun b lind for panorama sun 20
roof
56
Contro l unit fo r suspension
20 cont rol
Engine compartment fuse assignment
The fuse number is given on the plastic be­
neath or above the correspond ing fuse.
No. Electrical equipment
amps
1 Power supply for automatic 5 transmission
2
E lectronic Stabilizat ion Con-
30 t ro l (E SC)
3 Horn 15
4
DC/DC converter 40
5
Onboard supply control unit 5
6
BCM (righ t-side) 30
7
Washer pump 20
8
BCM ( left -side) 30
•
•

226 Fuses and bulbs
No. Electrical equipment amps
9 Lumbar support seat adjust-
ment
10
10 Lambda probe 10
Steering column lever, mul-
11 ti-function steering wheel
s
controls
12 Mobile phone adapter
s
13 Engine control unit 10
14 Engine control
unit
25
15 Gateway 5
16 Lambda
probe, fuel pump,
10
engine components
17 Eng ine components 20
18 Fuel pump control unit
2S
19 Sound
amplifier, DC/DC con-
verter 30
20 Brake light sensor
s
22 Windshield
wipers
30
Water recirculation pump,
23
supplementary heater, rad i-
10 a tor fans, relay coils for fuel
pump , engine components
24 Ignition coils 20
2S Central locking
, e lectr ic win-
30
dow (driver's side)
26 Central locking, e
lectr ic win-
30
dow (front passenger's side)
27 Power supply, terminal 15
so
29 Electric seat adjustment 30
30 Electronic Stabilization Con-
40
trol (ESC)
Bulbs
Replacing bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for you.
It is becoming increas ingly more and more
difficult to replace vehicle lig ht bulbs s ince 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 car which you can only
reach through the engine compartment.
Sheet meta l and bulb holders can have sharp
edges that can cause serious cuts, parts must
be correct ly taken apart and then properly put
back together to he lp prevent breakage of
parts and long term damage from water that
can enter housings that have not been proper­
ly resealed.
For your safety, we recommend that you have
your authori zed Audi dea ler replace any bulbs
for you, since your dealer has the proper tools,
the correct bulbs and the expertise.
Gas discharge lamps (Xenon lights ):
Due to the high e lectr ica l voltage, have the
bulbs replaced by a qualified technician.
Headlights with Xenon light are identified by
the high voltage st icker.
A WARNING "--
Changing Xenon lamps without the neces-
sary equipment can cause serious persona l
injury.
- Bulbs are pressurized and can explode
when being changed. Potential risk of in­
jury!
- On veh icles equipped with gas discharge
bulbs (Xenon light) life-threatening inju­
ries can result from improper handling of
the high-voltage portions of such lamps!
- Only your authorized Audi dealer or qualified workshop should change the
bu lbs in gas discharge lamps. There are
pa rts with sharp edges on the openings
and on the bulb holders that can cause
serious cuts. If you are uncertain about
what to do, have the work performed by
an authorized Audi dealer or qualified
workshop. Serious personal injury may
result from improperly performed work.
@ Tips
-If you still prefer to replace the light
bulbs yourself, be aware that the engine ..,.

242 Index .:..:..:..::....::..
...:..._ ___________________________ _
A
A/C (automatic climate control) .. .... .. 64
Accessories .. ... ... ... .... .. .. .. .. . 239
Adaptive cruise control Cleaning the sensor ....... .. .. .... . 171
Adapt ive light ............. .. .. .. .. .. 40
Adapt ive Light (defective) ....... .. .. .. 18
Adding Engine coolant ............. .. .... . 187
Engine oil .... ........... .. .. .... . 184
W indshield washer fluid ... .... .. .. . 193
Additional accessories
Addit ives 239
E ng ine oil .... ........... .. .. .... . 184
Adjustable steering column .... .. .... .. 66
Adjusting Air distribution (automatic climate con-
trol) ... .. .. .............. ... .. .. .. 65
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 50
Instrument illumination ... .. .. .. .. . .
44
Steering column ...... .... .. .. .. .. .. 66
Temperature (automat ic climate control) 65
Airbag
Warning/indicator lights ....... .... .. 16
A irba g system . . . . . . . . . . . . . . . . . 112, 128
Advanced Airbag System ........... . 116
Advanced Airbag System components . 119
Care ... .... ................ ..... . 126
Children .................. .. .... . 134
Child restraints ........... .. .. .... . 135
Components (front airbags) . . . . . . . . . 119
Danger of fitting a child safety seat on
the front passenger seat . . . . . . . . . . . . 114
Disposal . .. ... .......... .. .. .. .. . 126
Front airbags . . . . . . . . . . . . . . . . 116, 117
H ow do the front airbags work? . .. .. . 121
How many airbags does my vehicle
have? .................... .. .... . 119
How the Advanced Airbag System com-
ponen ts work together ...... .. .... . 120
Important things to know .... .. .... . 112
Indicator light .............. ... .. . 123
Monitoring ................. ... ... 123
PASSENGER AIR BAG OFF l ight .. .. .. . 123
Repairs .. .. ... .......... .. .. .. .. . 126
Safety instructions ........ .. .. .... . 125
Side airbags ................ ..... . 127 Side
curtain airbags ............... .
Weight-sensing mat .............. .
When must the system be inspected?
Alcantara Cleaning .. .... .. ............. ... .
All -wheel drive .. .. ..... ........... .
Selective wheel torque control
All wheel drive 130
134
123
173
158
153
Winter tires ... .. ............. .. .. 210
Alternator
refer to Generator ................ .. 15
Anti-freeze
refer to E ng ine coolant system . .. .. . .
Anti-lock brake system ............. . .
Anti- lock braking system 186
153
Warning/indicator lights ............. 16
Anti-slip regulation ... .......... .. .. 153
Warning/indicator lights .......... .. . 16
Anti-theft alarm warning system ... .. .. . 28
Anti-theft systems Electronic immobilizer ............... 33
Ashtray .... .... .. ............. .... . 53
Asterisk What does it mean when something is marked with an asterisk? . . . . . . . . . . . . . . 6
Audi drive select
refer to Drive select . . . . . . . . . . . . . . . . . 79
Audi Service Repair Manuals and Litera-
ture 237
AUTO Automat ic climate control . . . . . . . . . . . . 64
Automat ic headl ights ............ .. . 40
Auto Lock . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Automatic be lt retractor ............. 107
Automat ic climate control
Air out lets . . . . . . . . . . . . . . . . . . . . . . . . 65
Changing temperature units ..... .. .. . 65
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 64
Synchronisation . . . . . . . . . . . . . . . . . . . . 65
Automat ic Shift Lock (ASL) ........ ... . 82
Automatic transmiss ion .......... .... . 81
Automatic Shift Lock (ASL) ...... .... . 82
Driving ... .. ... ... ... .. ..... ... .. . 82
Emergency mode . . . . . . . . . . . . . . . . . . . 85
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . 85
Manual shift program .......... .. .. . 84
Removal lock (ignit ion key) ........ .. . 66

246 Index
Checking the engine coolant leve l .... . 186
Radiator fan . . . . . . . . . . . . . . . . . . . . . . 188
E ng ine coolant temperature
Temperature gauge ..... .. .. .. .. .. .. 10
Eng ine hood
Closing .... .......... ...... ... .. . 179
H ow to release the hood . . . . . . . . . . . . 179
E ngine oi l ..... ........... .... .... . 181
Adding .. .. ............. .. .. .. ... 184
Addi tives . . . . . . . . . . . . . . . . . . . . . . . . . 184
Changing .. ................ ... .. . 185
Check oil level ............ ... .. .. . 184
Consumpt ion . ........... .. .. .... . 184
I ndicator light . . . . . . . . . . . . . . . . . 17, 18
O il consumption .......... .... .... . 183
Oil dipstick ............... ... .... . 184
Oil grades . ................. ..... . 181
Pressure malfunction ....... .... ... .. 15
Sensor defective . . . . . . . . . . . . . . . . . . . . 18
Specification and viscosity .. .. .. .. .. . 181
Engine speed limitation ......... .... . . 17
Environment Break-in period ... ..... ... .. .. .. .. . 161
Cata lytic converter ............ ..... 161
Disposing of your vehicle battery .. .. . 193
Driving at high speeds ......... .. .. . 163
Driving to minimize pollution and noise 162
Fuel ... .... ................ ..... . 177
Fue l economy .............. .. .... . 162
Leaks under your vehicle ... .. .. .... . 179
Le tting the vehicle stand and warm up . 163
Proper disposal of dra ined brake fluid . 189
Proper disposal of dra ined engine cool-
ant . .. .... ... .......... .. .. .. .. . 187
Proper disposal of dra ined engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 184, 185
Recycling used engine oil ......... .. . 184
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . 58
Unleaded fuel ..................... 175
What should I do with an old battery? 193
EPC
refer to Electronic power control . . . . . . 17
Event Data Recorder (EDR) . ........ .. . 152
Exhaust tail pipes Cleaning . ............... ........ . 171
Expansion tank ............ .. .. .. .. . 186
Exterior lighting ............ ... .. ... . 40 Exterior
mirrors
Adjusting ..... .. .. .............. .. 44
Dimm ing . ... .. .. .. .............. .. 45
Heating ... .... .. ............. .... . 44
F
Fan
Radiator
Fastening Booster seats .... ................ .
Convertib le child safety seats ..... .. .
Infant seats ..... ............. ... .
Flat tire 188
141
140
139
Changing . .... .. ............. .... 218
Floor .. .. .. .. .. .. .. ...... .... ..... . 62
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Fog lights/rear fog lights ...... ... .. .. . 40
Folding chocks .. .. ... .......... .... 217
Folding the rear seat forward ... .. .. .. . 60
Foot pedals ..... .. .......... ...... .. 99
For the sake of the environment Gasoline fumes and the environment .. 177
Le tting the engine warm up . . . . . .
66, 68
Refueling . . . . . . . . . . . . . . . . . . . . . . . . 177
Sav ing fuel by early upshifting ........ 11
Front airbags Description . . . . . . . . . . . . . . . . . . . . . . . 116
How they work . .. ............. .... 121
Frontal collis ions and the laws of physics 105
Front passenger's door emergency lock ing 33
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 50
Adjusting . .... .. ............. .... . 96
Child restraints in the front seat .. .. .. 114
Fuel Additives . ..... .. ................ . 175
B lended gasoline ................. . 175
Consumption .. ... ................ . 22
Filler neck . .... .. ............. .... 176
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Gasoline .. ... ... ................ . 175
Gasoline additives ................ . 176
Low fuel level symbol . . . . . . . . . . . . . . . 18
Octane rating .. .. ............. .... 175
Recommendation ... ........... .. .. 175
Refueling . . . . . . . . . . . . . . . . . . . . . . . . 177
Reserve ........................... 11
Tank capacity .. .. ... .......... .... 235

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Monitoring the Advanced Airbag System 123
Multifunction steering wheel ...... .... . 21
N
Natural leather
Cleaning ... .. .... .... ..... ... ... . 173
Net . ..... .. .. .... .. .... ... .. .. .... 56
New tires and wheels
NHTSA 206
Contact ing . .................. .... 101
Number of seats . ... .... ... .. .. .. ... 104
0
Occupant seating positions . ... .. .. .... 95
Octane rating ..... ... ... .. .. .. .. .. . 175
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Offroad . .. .. .... ......... .... .. .. . 164
Offroad mode . ... .... ... .. .. .. .. .. . 155
OFF (automatic climate contro l) . . . . . . . . 64
O il
refer to Engine oil . . . . . . . . . . . . 18 1, 184
O il consumption ........... .. .. .. .. . 184
On -Board Diagnostic System (OBD)
Data Link Connector (DLC) . ... .. .. .. .. 26
Elect ron ic speed limiter . ... .. ...... .. 27
Malfunct ion Indicator Lamp (MIL) . .. .. 26
Open doo r/hood/ rear lid warning . . . . . . . 23
Opening Panorama sunroof .. ...... .. .. .. .. .. 38
Powe r windows .......... .. .. .. .. .. 37
Rear lid . . . . . . . . . . . . . . . . . . . . . . . 35, 36
Opening/clos ing
at the lock cylinder ............... ... 33
by remote contro l . . . . . . . . . . . . . . . . . . 30
with the central locking switch . . . . . . . . 32
with the convenience key . . . . . . . . . . . . . 3 1
Operate your vehicle econom ically and
minim ize po llution .......... ... ... .. 162
Optiona l equipment
Marked with an asterisk . . . . . . . . . . . . . . . 6
Other equipment (eff ic ien cy p rogram) 24
Outside m irrors
refer to Exter ior mirrors ........ ... .. 44
Owner's man ua l
How the Owner's Manua l is organized . . . 6
Inde x 249
p
Paint damage ....... . .. .. ..... ... .. 172
Pa int No .... .. .. .. .. . .. .... .... .. .. 234
Panorama sunroof . .. ............... . 38
Emergency clos ing .... ........... .. . 39
Park assist Cleaning sensors/came ra lenses . ... .. 17 1
Pa rking ....... ... .. ..... ........... 71
A utomat ic transm iss io n ........ .. .. . 82
Parking brake . .. .. .... ............. . 70
also refer to Electromechanical parking
brake ........ ... .. ................ 70
Parking systems ... .. . ... ...... ... .. . 87
Adjusting the d isp lay/warn ing tone . .. . 93
Cleaning the rea r view camera ..... .. . 90
Malfunc tion . .. .. .... ............. . 93
Pa rking system plus . . . . . . . . . . . . . . . . . 88
Rea r parki ng system ... .. .. ... ... .. . 88
Rea r view came ra . .... ............. . 89
T ra ile r hitch . .. .. .. . .............. . 93
Parts replacement . ................. 239
Pass- through .. .... .. . .. .. ..... ... .. . 61
PASS ENGER AIR BAG OFF light .... .. .. 1 23
Passive safety system . . . . . . . . . . . . . . . . . 94
Pedals ..... .. .. .. .. .. ........... .. . 99
Physical principles of a frontal collision 105
P lastic parts
Cleaning .. .. .. .. .... ............. 172
Polish ing . .. .. .. .. .. ............... 172
Pollutant filter (automat ic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Power locking system .. ... ...... ... .. . 28
Emergency lock ing ................. . 33
Power w indows .. ................. . 37
Rear lid ..... .. .... .......... ...... 35
Se lective unlock feature . . . . . . . . . . . . . 32
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Slid ing/ti lting sunroof .......... .. .. . 37
Power sea t adjustment .......... .. .. . 51
Power w indow
Convenience opening/clos ing . ... .. .. . 37
Power w indows .. .. .. . .. ....... ... .. . 37
Child safety lo cks . .... ........... .. . 37
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 38
•
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