fog light AUDI A3 2015 User Guide

220 Checking and Filling
Battery
General information
Under normal operating conditions, the bat­
tery in your Audi does not need any mainte­
nance. With
high outs ide temperatu res or
long daily drives we recommend that you have
the electro lyte level checked by a service fa­
cility. The e lectrolyte level shou ld also be
checked each time the battery is charged
c:>page222.
Have the battery checked when you take your
vehicle in for service. You are well advised to replace a battery that is older than 5 years.
With certain types o f airbag deployment, the
battery is disconnected from the vehicle elec ­
trica l system for safety reasons
c;, .&. in Re­
pair , care and disposal of the airbags on
page 156.
Disconnecting the battery terminals
Some vehicle functions such as power win­
dows are unavai lable if the battery termina ls
are d isconnected. These functions have to be
relearned after the battery terminals are con­
nected again. To prevent this, the battery
should only be disconnected from the vehicle
electrical system when absolutely necessary
for repairs .
To reprogram the functions, proceed as fol­ lows:
Function Reprogramming
Power window one-c;, page 40, Correcting
touch up/down power window mal-
function functions
Remote control key If the vehicle does not
or react to the key, it
convenience key must be synchroni zed
c:>page 33
Digital clock c:>page 10
ESC indicator light The indicator light
goes out after driving
a few meters
Vehicles not driven for long periods
If you do not drive your vehicle over a period
of severa l days or weeks, e lectrica l compo­
nents are gradually sca led back or switched
off. This reduces energy consumption and
maintains starting capability over a longer pe­
riod
c;, page 190. Some of the conven ience
functions may not operate, such as the interi­
or lights or power seat adjustment. The con ­
venience functions will be availab le aga in
when you switch on the ignition and start the
engine.
Winter operation
During the winter months, battery capacity
tends to decrease as temperatures drop. This
is because more power is also consumed wh ile
sta rting, and the headlights, rear window de­
fogger, etc. , are used more often.
Avoid unnecessary power consumpt ion, par­
ticularly in city traffic or when traveling only
short distances. Let your authorized Aud i
dealer check the capacity of the vehicle bat­
tery before winter sets in ~ page 222. A well
charged battery will not on ly prevent starting
problems when the weather is cold, but will
also last longer.
A WARNING -
-Work on the battery requ ires expert
know ledge. Contact your authorized Audi
dealer qualified repair facility for infor­
mat ion regarding the vehicle battery.
There is a risk for chemical burns or ex­
p losions.
- Never open the vehicle batte ry . Do not
try to change the battery electrolyte lev­
el. Otherwise explosive gas will escape
from the battery and increase the risk of
an explosion .
(i) Tips
If your vehicle is left standing for several
weeks at extremely low temperatures, the
vehicle battery should be removed and
stored where it w ill not freeze. This will ..,.

No. Equ ipment Ampere
F49 Starter, clutch sensor
5
FS3 Rear window defogger 30
The power seats* are protected v ia
circ uit
br ea ker s
that automatically sw itch on after a
few seconds after the overload has been re­
d uced.
(D Tips
Note that the following table was accurate
at the time of pr int ing and is subject to
change.
Left engine compartment fuse
assignment
F ig. 177 Eng ine compartment: fuse assignment
M ,.._
-0
!
No. Equ ipment Ampere
Fl ESC control module 40
F2 ESC control module
40
F3 Eng
ine control module (gas-
15/30
oline)
Engine cooling, engine com-
F 4 ponents, auxiliary heater
5/10
coil relay (1 +2), secondary
a ir injection pump relay
FS Eng
ine components, tank
7,5/10/
system 15
Fuse s and bulb s 257
No. Equipment Ampere
F6 Brake light sensor
5
F7 Engine components, water 7,5/10/
pumps
15
F8 Lambda sensor 10/15
Engine components, ex-
F9 haust door, glow time con-
5/10/20
tro l module, SU LEV valve
FlO Fuel
injectors, fuel control
15/20
module
Fl l Auxiliary heater heating ele
-
40
ment 2
F12 Auxilia
ry heater heat ing ele-
40
ment 3
F13 Automatic transmiss
ion con-
15/30
trol module
FIS Horn 15
F16 Ignit ion coil 20/7.5
F17 ESC contro
l modu le, engine
7.5
control module
F18 T
ermina l 30 (reference volt-
5
age)
F19 Windshield wipers
30
F20 Horn 10
F22 Termina
l SO diagnosis
5
F23 Starter 30
F24 Auxiliary heater heating ele-
ment 1 40
F31 Vacuum pump 15
F32 L ED head lights
5
(i} Tips
Note that the follow ing tab le was accurate
at the time of printing and is subject to
change.

Exterior mirrors
Adjusting .. .. ... ... .... ... .. .. .... 48
Dimming ... .. .. ........ ... .. .. .. .. 49
folding .. .. ................. .. .... 48
H eating .. .. ................. .. .... 48
F
Fasten ing
Booster seats . . . . . . . . . . . . . . . . . . . . . 17 5
Convertible c hild safety sea ts . .. .. .. . 173
Infant seats . . . . . . . . . . . . . . . . . . . . . . 172
Fl oor mats ... .. .... .... ... .. .. .. ... 126
F og lights/ rear fog light(s) . . . . . . . . . . . . . 4 2
Folding the exterior mirrors Center locking ... .. ... ... .. .. .. .... 36
F oldi ng the rear seats .... ... .. .. .. .. .. 61
F oot pedals .. ... .. ..... ... .. .. .. .. . 126
Footwell light ing .......... .... .. .... 45
F or the sake of the environment
F ue ling .... .... ...... ... .. .. .. ... 208
L eaks . ..... ... .. .. ..... ... .. .. ... 211
Rear window defogger . . . . . . . . . . . . . . . 68
Fr ont airbags
D escr ipt ion . ............. .. .. .. .. . 14 4
How they work . ... .... ... .. .. .. ... 150
F ronta l co llisions and the laws of physics 132
Front armrest . . . . . . . . . . . . . . . . . . . . . . . 54
Fr ont passenger's door emergency locking 3 7
Front seats Ad just ing ..... ........... ... ... .. 123
C hi ld restra ints in the front seat . .... . 142
also refer to Seats . . . . . . . . . . . . . . 5 2, 6 1
Fue l
Addit ives ... ... .. .. ...... .. .. .. .. . 206
Blended gasoline ............ .... .. 206
Current consumpt ion ... ...... .... ... 27
F ue l tank capac ity ........ .. .. .. .. . 266
Gasoline . .. ............. .... .. .. . 206
Gasoline additives ..... ... .. .. .... . 207
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 1 0, 11
Indicator light . . . . . . . . . . . . . . . . . . . . . 24
Octane rating ............ .... .. ... 206
Recommendation ......... .. .. .. .. . 206
Saving fue l .............. .... .. .. . 102
F ue l economy messages (eff iciency pro-
g ram) ..... .. .. ... .. ..... ... .. .. .... 29
Inde x 277
Fueling
Fuel fi ller door emergency re lease 209
Fuel tan k capacity . .. .. ..... ... .. .. 266
Open ing the fue l filler door ........ .. 208
Fuses Ass ignment ... .... . ... ...... ... .. 256
Interior ... .. .... .. . .. .. ..... ... .. 255
replacing . ... .. .. .. .. .. ...... ... .. 255
G
Garment hooks . . . . . . . . . . . . . . . . . . . . . . 58
Gas d ischarge lamps .. .............. . 258
Gear recommendation . . . . . . . . . . . . . . . . 12
G lossary of tire and loading term inology 226
G love compartment . . . . . . . . . . . . . . . . . . 58
Gross Vehicle Weight Rating (GVWR) ... 265
H
Head light range control system ... .. ... 4 2
Indicator light ... .. . ... ...... ... .. . 25
Head lights . . . . . . . . . . . . . . . . . . . . . 42, 44
Head lights cleaning .. .. .. .. .. ............... 202
Head lights
Head light range control system . ... ... 42
Head restra ints .. ...... ......... .. .. 1 25
adjus ting . . . . . . . . . . . . . . . . . . . . . . . . . 55
Adjus ting . .. .. .. .. .. ........... .. 125
removing and insta lling . ..... ... .. .. . 55
Heated exter io r mir ro rs .. .... .... ... .... .. . 48
Rea r window . . . . . . . . . . . . . . . . . . . . . . . 68
Seats ..... .. .. .. ................. . 68
Washe r nozzles . . . . . . . . . . . . . . . . . . . . 46
Heavy clothing and safety be lts ... .... . 134
Hex socket .. .. .. .. ................. 247
Hig h voltage warn ing label ....... .. .. 265
Highway light . .. .... .. ........ ...... 43
Hill descent contro l .. . ... ...... ... .. 109
Hill ho ld . .. .. .. .. .. . ....... ..... .. . 78
Hill ho ld assist
refer to H ill hold . .. ........... .... . 78
Hor n .. .. .. .. .... ... .. .. ..... ... .. .. 8
How are child rest raint system anc ho rs re-
l ated to ch ild safety .... ........... .. 180
•
•
•

278 Index
How many airbags does my vehicle have?
How often should I check my tire pres-148
sures? .. .. .... ............. ...... . 232
How safety belt pretensioners work .... 137
Hydroplaning .............. ... .... . 236
I
Ignition
Indicator light . . . . . . . . . . . . . . . . . . . . .
21
switching on and off (with button) ... .. 73
Ignition key safety interlock . . . . . . . . . . . 70
Ignition lock
mechanical . . . . . . . . . . . . . . . . . . . . . . . .
70
Immobiliz er . . . . . . . . . . . . . . . . . . . . . . . . 31
Important things to do before driving .. 121
Improperly worn safety belts . . . . . . . . . . 13 7
Indicator lights . . . . . . . . . . . . . . . . . . . . . .
14
Infant seats .............. .... .... . 172
Installing child safety seats
Safety belts . . . . . . . . . . . . . . . . . . . . . .
177
Insta lling the upper tether strap on the
anchorage ..... ........... .... .... .
183
Instrument cluster ......... ...... .. .. 10
Instruments ................. ..... .. 10
Adjusting the lighting ........... ... . 45
Interior lighting ..................... 45
Intermittent (windshield wipers) ... .... 46
]
Jump-starting 259
Jump er cables ... .......... .. .. .. .. . 260
K
Key ......... ........ ........ ....... 31
Checking the number ................ 31
Driver messages (mechanical ignition
key) ..... .. ................ ..... ..
75
Dr iver messages (with convenience key). 75
Key not recognized ......... ... .... .. 75
Key replacement . . . . . . . . . . . . . . . . . . . 31
Replacing the battery ....... .. .. .. .. 33
un locki ng/locking . . . . . . . . . . . 33, 34, 35
Key recognition
automatic climate control system ... ..
66
Manual climate contro l system . . . . . . . . 65
Kick-down
Automatic transmission
110
Kn ee air bags ................... .... 157
Description .. .. .. ............. .. .. 157
How they work .................... 158
Important safety instructions ........ 159
L
Lane assist
refer to Active lane assist ........ ... . 94
LATCH ........ .... ............... . 180
Description .... .. .. .............. . 181
Installing a child restraint ........... 182
Location ......................... 181
Mounting and releasing the anchorage
hook ..... .... .. .. .............. .
182
Launch Control-Program (automatic trans-
m1ss1on) ....... .. .. ........... ....
111
Leather care/clean ing ................ 204
Leaving home ..... .................. 44
LED headlights
All-weather lights ..................
42
Lifting jack . .. .. .. ................. 251
Lifting vehicle .................. .... 263
Light
adaptive light .. .................. ..
42
Adjust ing automatic headlights ....... 44
Coming/Leaving home .............. . 44
Fog lights/rear fog light(s) ........... 42
Headlight flasher ................... 44
Headlights . . . . . . . . . . . . . . . . . . . . 42, 44
Highway light .... ................ ..
43
Low beams ..................... ... 42
Parking light .......................
42
Switching daytime running lights on and
off ........... .. .. .............. .. 44
Light/rain sensor
Head lights ....................... . 42
Indicator light .....................
25
Intermittent (windshield wipers) ...... 46
Lighting
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . .
45
Lights
Ambient lighting ...................
45
Headlight range control system ... ... . 42
Interior/reading . ...................
45

28 0 Index
------------------------------------
Parking aid
Cleaning s ensors/camera lenses ... .. . 202
Parking brake . . . . . . . . . . . . . . . . . . . . . . . 76
E mergency braking function .. .. .. .... 78
I ndicator light ........... .. .. .... .. 19
I ndicator lights . . . . . . . . . . . . . . . . . . . . 76
Parking ..... .. .. ..... ... .. .. .... .. 77
Power failure . . . . . . . . . . . . . . . . . . . . . . 76
Releasing and setting ..... .. .. .. .. . . 76
Starting from a s top ...... .. .. .. .. .. 77
also refer to Park ing brake ..... .. .. .. 76
Parking light .... .. ..... ... .. .. .... .. 42
Park ing system
Adjusti ng the disp lay/wa rn ing tone .. . 120
C leaning the rearview came ra . .. .... . 117
M alfunct ion . .. . ...... ... .. .. .... . 120
Park ing system p lus .. ... .. .. .. .. .. . 1 15
Periphe ra l disp lay ..... ... .. .. .... . 115
Rear parking system ...... .... .... . 115
Rearview camera ......... .. .. .. .. . 116
also refer to Park ing systems . . . 115, 116
Parking systems . .. ..... ... .. .. .... . 114
Park ing (automatic transmission) . 107, 108
Parts rep lacement ......... .. .. .... . 270
Pass -t h ro ugh . . . . . . . . . . . . . . . . . . . . . . . . 63
PASSENGER AIR BAG OFF l ight . .. .. ... 153
Pedals . ..... ... .. ..... ... .. .. .... . 126
P eriphe ral disp lay .......... .. .. .... . 115
P hys ica l pr inciples of a frontal coll is io n . 132
P lastic parts cleaning .. ... .. .. .. .. ... 203
Polishing .. .. ................ ... .. . 203
Pollen filter
refer to Po llutant filter . . . . . . . . . . . . . . 64
P oll utant fi lter .. .. ..... ... .. .. .... .. 64
Post-co llision brake ass ist ... .. .. .. .. . 186
Power seat adjustment . . . . . . . . . . . . . . . . . . . . 54
W indows ................. .. .... .. 38
P owe r windows .. . ...... ... .. .. .... .. 38
Conven ience opening/closing . . . . . . . . . 39
Malfunct ion . ... .. .... ... .. .. .. .. .. 40
Pr egnant women
Specia l cons iderations when weari ng a
safety be lt .. .. .. ..... ... .. .. .... . 136
Pre sense Driver messages . . . . . . . . . . . . . . . . 88, 9 2 Genera
l Info rmation . .. ..... .... . .. . 82
Settings . ..... .. .. ... ..... ... .. .. . 92
Pressure (tires) .. .. ............. .... 244
Proper occupant seating positions . .... 122
Proper safety belt posi tion ..... ... .. .. 135
Proper seating posit ion
Front passenger .. ..... ........... . 123
Occ upants . .... .. ............. .... 122
Re ar passenge rs .. ... .......... .. .. 1 24
Protecting .. ... ... .. .............. . 203
Protection mat
refer to Revers ible mat . ..... ... .. .. . 62
Q
Question
What happens to unbelted occupants? 132
R
Radiator fan
Radio clock 218
refer to C
lock . . . . . . . . . . . . . . . . . . . . . . 10
Rain/ light sensor
Headlights .. .. .. ............. .. .. . 42
Indicator light ... ... .. .. ... ..... .. . 25
Intermittent (w indshield w ipers) ..... . 46
Switching on and
off ........ ...... .. 46
Range (tank contents) ............. .. . 27
Re ar armrest .. .. .. ... .......... .. .. . 55
Rear lid
refer to Luggage compartment lid .. .. . 37
Rear light
Indicator light . .. ... .......... .. .. . 24
Rea rv iew camera
refer to Parking systems
115,116
Rea rv iew mi rror
refer to Mi rror . .. ............. .... . 49
Rearv iew mirror dimming ........ .... . 49
Rea r window de fogger . . . . . . . . . . . . . . . . 68
Recirc ulat ion mode
automatic cont ro l system ....... .. .. . 67
ma nua l cl imate co ntrol system ... .. .. . 66
Reduc ing fuel consumption
Efficiency program . . . . . . . . . . . . . . . . . . 28
Ref ueling ... .... .. .. .... . ..... ... .. 207
Fuel leve l ind icator ... .......... .. .. . 11