key battery AUDI A3 CABRIOLET 2015 User Guide

106 Audi side assist
- Side assist is not active wh ile you are
making the adjus tment.
- Your settings are automatically sto red
and ass igned to the remote control key
being used.
Driver messages
App lies to vehicles: with Audi side assist
If t he side assist switc hes off automat ically, a
message appea rs in the instrument cluster
d is p lay .
@; Audi side assi st : currently unavailable
No sensor vision
The radar sensors' visio n is affected . Do not
cover the area in front of the senso rs with bike
wheels, s tickers, dir t or ot her objects. Clean
the are a in front of the sensors , if ne cessa ry
~ page 104, fig. 102.
@• Audi side assist: currently unavailable
Side assist can not be switched o n temporari ly
beca use there is a mal func tion (for example,
the battery cha rge leve l may be too low) .
@; Audi side assist : System fault!
The system cannot guara ntee that it w ill de­
tect ve hicles correctly and it is sw itched
off.
The senso rs have been displaced o r are faulty .
H ave the sys tem checked by an au thor ized
Aud i dea le r or autho rized Aud i S ervice Fac ility
soon .

194 Smart T echnol ogy
not used then is being generated in o rder to
maintain an optimal battery charge level.
(D Tips
- Energy management cannot overcome
the laws o f physics. Note that the charge
l evel and length of the battery life are
li mited .
- When the starting ability is endangered,
the (•) indicator light turns on
c> page20.
What you should know
Maintaining the starting ability is the highest
priority .
A lot of stress is p laced on the battery when
driving short distances, in traffic, and at co ld
times of the year. A lot of energy is used but
little is generated.
It is also critical when the
engine is not running but electrical equip­ ment is switched on . In this case, energy is
used but none is generated .
In situations like this, energy management
will actively regulated the distribut ion of en­
ergy.
L ong periods wi thout u se
If you do not drive your vehicle for several
days or weeks, e lectrica l equipment is gradu­
ally sca led back or switched off. This reduces
energy use and ensures the vehicle will be
able to start after long periods of time. Some
conven ience functions such as opening with
the remote control key may not be ava ilable.
These convenience functions w ill be availab le
again o nce you swi tch the ign ition on and
start the engine.
With the engine switched off
For example, if you listen to the radio when
the eng ine is sw itched off, the battery w ill
d rain .
A warning text w ill appear if energy consump­
tion could impair starting ab ility .
The message shows that you need to start the
engine in order to charge the battery.
With the en gine running
Although e lectrical energy is gene rated while
driving, the battery can dra in. This can happen
when litt le energy is generated, and much is
u sed and the charge leve l of the battery is not
optimal.
T o restore the balance of ene rgy, components
that require large amounts of energy are tem­
porari ly scaled back or switched off. Heating
systems in particular require a great deal of
energy. If you notice, for example, that the
seat heating* or rear window defroster is not
worki ng, then it has been temporar ily reduced
or switched off . These systems are available
again as soon as the energy balance has been
resto red.
In add ition, you may notice that the idle
speed has slightly increased. That is normal
and no cause for concern. Due to the in­
c reased idling speed, the additional required
energy w ill be gene rated and the battery will
be charged.
Notice about data
recorded by the Event
Data Recorder and
vehicle control
modules
E v ent D ata Reco rder
This vehicle is equ ipped with an Event Data
Recorder (EDR). The main purpose of an EDR
is to record, in certain crash or near crash-like
situations, such as an a irbag deployment or
hitting a road obstacle, data that will assist in
understanding how a vehicle's systems per­
formed . T he EDR is des igned to record data
related to vehicle dynam ics and safety sys­
tems fo r a short period of time, typically
30 seconds or less . The EDR in this vehicle is
designed to record such data as:
- How various systems in your vehicle were
operating;
- Whether or not the driver and passenge r
safety belts were b uckled/fastened;

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Always check with your authorized Audi
deale r to make s ure you are using the
correct brake f luid. The correct type of
b rake fluid is a lso indicated on the
b rake fluid reservoir .
- The brake f luid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fl uid is left in t he system too
long. This ca n ser ious ly aff ect th e effi­
ciency of the bra kes a s well as yo ur
safety. This could resul t in an accid ent.
(D Note
Brake fl uid will damage the paint of your
ve hicle .
@ For the sake of the environment
Because of the problem of proper d isposa l
of brake flu id as we ll as the special tools
req uired and the necessa ry expert ise, we
recom mend tha t you have t he b rake fluid
changed by your aut hor ized Audi de aler.
Battery
General information
The batte ry in you r Audi does not need any
maintenance unde r
normal operating condi­
tions . Aud i recommends having the elect ro­
l y te level check by a n author ized Audi dealer
or author ized A udi Se rv ice F acili ty when there
a re
high outside tempe ra tur es or when dr iv ing
all day. The e lec trolyte level sho uld also be
checked each time the battery is charged
¢ page 225.
Have the bat tery c hecked w hen you br ing yo ur
ve hicl e in for an inspec tion. I t is a good idea
to re place the battery if it is mo re than 5 years
old .
D uring certa in types of a irbag deploymen ts,
t he bat tery is disconnected from the vehi cle
e lectrical system fo r safety reasons ~ &.
in
Repair, care and disposal of the airbags on
page 162.
Checking and Fillin g 223
Disconnecting the battery terminals
Some vehi cle fu nctions (such as power w in ­
dows) a re not ava ilable when the batte ry is
disco nnected . These fu nctions must be p ro­
grammed afte r the battery is reconnected . To
avo id hav ing to do this, only disconnect the
battery from the vehicle electrical system
whe n that is necessary to perform repairs .
To reprogram the functions, proceed as fo l­
lows:
Function Reprogramming
Power window one -¢ page 40, Correcting
touch up/down power window ma/-
function functions
Remo te control key If the vehicle does no t
or r
eact to the key, i t
convenience key must be synchronized
¢ page33
Dig ita l cl ock ¢pag e 10
ESC indicator light The indicator light
goes out after driv ing
a few meters
Not running the vehicle for long period s
of time
If you do not drive your vehicle fo r several
days or weeks, elect rical componen ts are
gradua lly reduc ed o r switched off. This re­
duces e nergy consumption and maintai ns the
vehicle 's ability to star t ove r a long per iod of
t ime ~
page 193. Some co nvenience func­
tions, s uch as in terior lighting or power sea ts*
may not work . These convenience functions
will be ava ilab le again once you switc h the ig­
nit ion on and sta rt the engine.
Winter operation
D uring the winte r mon ths, i t is common for
the battery capacity to dec rease as the tem ­
peratures become lower . This is because more
power is needed to start the vehicle and com ­
ponents such as the head lights and the rear
window defogger are used more frequently . .,..
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Audi Service Repair Manuals and Litera ­
ture
AUTO 282
Automatic cl imate control system . .. .. 72
Automatic headlights ............... 49
Auto Lock (central locking system) ...... 32
Automatic belt retractor . . . . . . . . . . . . . 14 1
Automatic climate control sys tem
refer to C limate cont rol system (au to-
mat ic) ... .. .. .... .. .... ... .. .. .... 72
Automatic headlights ......... .. .. .. .. 49
Automatic post-collision braking system 189
Automatic power top ................. 41
Automatic transmission ............. .
D.. .
nvmg tips ..................... . .
E me rgency mode ................ . . 110
112
116
H ill desce nt co ntrol ................ 114
I gnition key safety in ter lo ck . . . . . . . . . . 76
Kick-dow n .. ................. .. ... 115
L aunch Contro l-Program ... .. .. .. .. . 11 6
malfunction . .. .. ..... ... .. .. .. .. . 111
Selecto r lever emergency release . . . . . 1 17
Selector lever lock . . . . . . . . . . . . . . . . . 111
Selector lever po sit ions . . . . . . . . . . . . . 11 O
Shifting manua lly ... ..... .... ... .. . 115
Steer ing whee l w ith shift paddles ..... 115
Stro nic .. ...................... .. 110
tiptronic . .. .... ............. .. .. . 115
Automatic wipe/wash system . . . . . . . . . . 53
Auto Safety Hotline ..... ... .. .. .. .. . 134
Average consumption ......... .. .. .. .. 27
Average speed ............. .. .. .. .. .. 27
B
Battery ..... .. .. ... . .... ... .. .. ... 223
Charge level . .... ..... ... .. .. .. .. . 193
Charging . . . . . . . . . . . . . . . . . . . . . 20, 225
Energy management ............... 193
Important warnings ............... 224
Indicator light . . . . . . . . . . . . . . . . . . . . . 20
J ump starti ng .. ........... ...... .. 273
L ocat ion . .. .... .......... ..... ... 224
Replacing the ba tte ry .............. 226
W inte r op era tion .................. 223
Wo rking on the battery . ... .. .. .. .. . 224
B efore dr iving .................... .. 126
Blended gasoline .......... .... .. .. . 210 B
lower
automatic Climate contro l system . . . . . 73
Manua l cl imate control system ... .. .. . 71
Boos ter seats . .. .. .... ........... .. 178
Brake fluid Changi ng the brake fluid ............ 222
Checking the brake fluid level ........ 222
What is the correct bra ke fluid level? .. 2 22
What shou ld I do if t he b rake fluid wa rn-
ing ligh t comes on? . ........... .... 2 22
B rakes ............................ 190
B rake assist system ................ 188
B ra ke booste r .. .. .... ........... .. 190
Ind icator light . .. .. .. ........... .. . 24
New brake pads . . . . . . . . . . . . . . . . . . . 19 0
Brake system Brake fluid 222
Br ake fluid specifications fo r refill and re-
pla cement .. .. .. ................. 222
Br ake pads .. .. .. .... ........... .. 196
Fl uid reservo ir ... ... .. .. ..... ... .. 2 22
Worn b rake pads symbo l . . . . . . . . . . . . . 22
B rak ing
E mergen cy b ra ki ng f unct io n ........ .. 84
Ind icator lig ht . .. .... ........... .. . 18
Pa rking brake ...... . .. .. ..... ... .. . 82
Starting on inclines .. .. ..... ... .. .. . 84
B reak-in per iod . . . . . . . . . . . . . . . . . . . . . 196
Br ake pads . . . . . . . . . . . . . . . . . . . . . . . 196
T ires ..... .. .. .. ................. 196
Bu lbs ..... .... .... ................ 272
C
California Proposition 65 Warn ing . .. .. 215
Battery specific .. ................. 225
Capacities Fuel tank
.. .. .... .. . .. .. ..... ... .. 280
Washer fl uid reservo ir .............. 280
Care .............................. 20 4
also refer to Cleaning
Cargo area ........ .. .............. .
Cargo bag . ... .... .. . .. .. ..... ... .. . 204
132
68
Cargo ne t . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Catalytic converter ... ............... 197
CD -RO M player (navigation) . . . . . . . . . . . . 65
CD changer ... .. .. .. . .. .... ...... .. . 65
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290 Index
E
ECO mode (automatic climate control sys -
tem) . ..... .. ................ ..... ..
72
Efficiency program . . . . . . . . . . . . . . . . . . . 28
Description .............. .... .. .. .. 28
Fu el economy messages . . . . . . . . . . . . . 29
Other equipment . . . . . . . . . . . . . . . . . . . 29
Electrical accessor ies
refer to Socket . . . . . . . . . . . . . . . . . . . . . 64
Electromechanical parking brake
refer to Parking brake ......... .... .. 82
Electromechanical steering ....... ... . 192
Indicator lights ................... 192
Electronic diffe rent ial loc k ... .. .. .. .. . 188
Indicator light . . . . . . . . . . . . . . . . . . . . . 21
Electronic immobilizer ...... .... .... .. 36
also refer to Immobilizer . . . . . . . . . . . . 31
Electronic speed limiter . . . . . . . . . . . . . . . 30
Electronic stabilization control (ESC)
I ndicator light . . . . . . . . . . . . . . . . . . . . .
21
Sport mode ................ ..... . 189
Electronic Stabilization Control (ESC) . . . 188
Emergency assistance ....... ... .... . 261
Emergency flasher . . . . . . . . . . . . . . . . . . . 50
Emergency flashers
Indicator light . . . . . . . . . . . . . . . . . . . . .
25
Emergency operation
Emergency braking function .... .... ..
84
Front passenger's door ...... .. .. .. . . 37
Luggage compartment lid .. .... .... . 261
Power top . . . . . . . . . . . . . . . . . . . . . . . . . 45
·th ' k
w1 convenience ey . . . . . . . . . . . . . . . . 80
Emergency release
Fuel filler door ........... .........
213
Selector lever . . . . . . . . . . . . . . . . . . . . . 117
Emergency starting ......... ... .... . 273
Emergency towing ... .. .... .. .. .. .. . 275
Energy management ....... .. .. .. .. . 193
Indicator light . . . . . . . . . . . . . . . . . . . . . 20
Engine
Coolant
.. .. ................ ..... . 220
Starting with jumper cables . ..... .. . 273
starting (button) ............. .... .. 78
Starting (driver messages with conven-
ience key) .. ........ ..... .. ........
81
start ing (key) . .. ...... .... ... .. .. .. 76
stopping (button) ............. ..... 79
stopping (key) ... ................ .. 78
Engine compartment
Closing the hood .............. .. ..
216
Open ing the hood ................. 215
Overview . ..... .. ................ . 216
Safety precautions ............. .... 214
Engine control (indicator light) ...... .. . 22
Engine coolant .. .. ............. .... 220
Radiator fan ... .. ... .......... .... 221
Engine oil . ..... .. ................ . 217
adding ....... .. ................ . 218
Changing ........................ 219
Checking the oil level ............... 218
Dipstick. .. .. .. .. ............ 216, 218
Indicator light . .. ... ......... ... .. . 20
Oil consumption .. ..... ..... ... .. .. 217
Specification and viscosity ... .. .. .. .. 217
Use ...... .... ................... 218
Engine speed limitation (indicator light) . 23
Environment
Break-in period . . . . . . . . . . . . . . . . . . . .
196
Catalytic converter ............. .. .. 197
Disposing of your vehicle battery . .. .. 226
Driving at high speeds ............ .. 198
Driving to minimize pollution and noise 198
Fuel economy . ... ....... ...... .. .. 198
Letting the vehicle stand and warm up. 199
Proper disposal of drained brake fluid . 222
Proper disposal of drained eng ine oil .. 219
Unleaded fuel .... ................ . 210
What should I do with an o ld battery? . 226
EPC (engine contro l) . . . . . . . . . . . . . . . . . . 22
ESC
Automatic post-collision braking sys-
tem .. ... ... .. .. .. ...... ....... ..
189
Electronic stabilizat ion control . .. .. .. 188
Sport mode . .. .. ... ....... ... .. .. 189
Event Data Recorder (EDR) . . . . . . . . . . . . 194
Exterior lighting . .. ... .......... ..... 49
Exterior m irrors
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . .
55
D. . 1mming .. .. ...... .. ... ... ... ..... 56
folding ... ................... ..... 55
Heating . .. ................... .... . 55

292 Index
How often should I check my tire pres -
sures? . ..... ... ............. ..... .
241
How safety belt pretensioners work ... . 144
Hydroplaning ................. .... . 248
I
Ignition
Indicator light . . . . . . . . . . . . . . . . . . . . .
21
switching on and off (with button) ..... 78
Ignition key safety interlock . . . . . . . . . . . 76
Ignition lock mechanical . . . . . . . . . . . . . . . . . . . . . . . . 76
Immobili zer . . . . . . . . . . . . . . . . . . . . . . . .
31
Important things to do before driving .. 126
Improperly worn safety belts ....... .. . 144
Indicator lights ...................... 13
Infant seats . . . . . . . . . . . . . . . . . . . . . . . 17 5
Installing child safety seats Safety belts . . . . . . . . . . . . . . . . . . . . . .
180
Installing the upper tether strap on the
anchorage . .. ............. .. .. .. ...
186
Instrument cluster ......... .... .... .. 10
Instruments .... .... ...... .. .. .. .. .. 10
Adjusting the lighting ......... .. .... 53
Interior lighting .............. ..... .. 52
Intermittent (windshield wipers) . . . . . . . 53
]
Jump-starting
Jump start cables 273
274
K
Key
..... .... ................ ..... .. 31
Checking the number ....... ... .... .. 31
Driver messages (mechanical ignition
key) . .. .. .. .. . .......... .. .. .... ..
81
Driver messages (with convenience key) . 81
Key not recognized . . . . . . . . . . . . . . . . . . 80
Key replacement . . . . . . . . . . . . . . . . . . . 31
Replacing the battery ..... .. .. .. .. .. 33
unlocking/locking . . . . . . . . . . .
33, 34, 35
Key recognition
Climate control system . . . . . . . . . . . . . . 70
Kick-down Automatic transmission ... .. .. .....
115
Knee airbags .... .. ............. .... 163
Description . ..... ................ . 163
How they work ... ................ . 164
Important safety instructions ........ 165
L
Lane assist
refer to Active lane assist ........... . 99
LATCH ... .. .. .. .. ............. .. ..
183
Description .. .. .. .. .............. . 184
Installing a child restraint ........ ... 185
Location . . . . . . . . . . . . . . . . . . . . . . . . . 184
Mounting and releasing the anchorage
hook ..... .... .. .. ........... ....
185
Launch Control-Program (automatic t rans-
m1ss1on) ....... .. .. .............. .
116
Leather care/cleaning ............... . 207
Leaving home .................... .. .
51
LED headlights
All-weather lights ................ .. 49
Left hand drive . . . . . . . . . . . . . . . . . . . . . .
52
Lifting jack . .... ............... .... 266
Lifting vehicle . .. .. .. ........... .. .. 277
Light adaptive light . . . . . . . . . . . . . . . . . . . . . . SO
Adjusting automatic headlights ...... .
51
Coming/Leaving home .......... .... . 51
Fog lights/rear fog light(s) .... ...... . 49
Headl ight flasher .... .......... .. .. .
51
Headlights . . . . . . . . . . . . . . . . . . . . 49, 51
Highway light .... ................ .. SO
Low beams . ..... ................ .. 49
Parking light .................... .. . 49
Switching daytime running lights on and
off . .. ... ... .. .. .. ..... ...... .. .. .
52
Travel mode . . . . . . . . . . . . . . . . . . . . . . . 52
Light/rain sensor
Headlights .... .. ................. . 49
Indicator light ... ............. .....
24
Intermittent (windshield wipers) ..... . 53
Lighting
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . .
52
Lights
Ambient lighting . . . . . . . . . . . . . . . . . . .
52
Headlight range control system ... ... . 49
Interior/reading . . . . . . . . . . . . . . . . . . . .
52

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Recirculation mode
automatic control system . . . . . . . . . . . . 73
manual climate control system . . . . . . . . 72
Reducing fuel consumption
Efficiency program . . . . . . . . . . . . . . . . . . 28
Remote control
refer to Remote control key . . . . . . . . . . 31
Remote control key . . . . . . . . . . . . . . . . . . . 31
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 31 33
,
Replacing the battery ..... .. .. .. .. .. 33
Synchron izat ion ....... ...... .... ... 33
un locking/locking ........... .... ... 33
Repair manuals ............ .... .. .. . 282
Repairs Airb ag system ........ ......... .. . 162
Replacement key . . . . . . . . . . . . . . . . . . . . 31
Replacing Light bulbs . ............. .... .. .. . 272
Tires and wheels ......... .. .. .. .. . 249
Replacing windshield wiper blades .. .. .. 54
Report ing Safety Defects . . . . . . . . 134, 135
Reset button (tr ip odometer) . . . . . . . . . . 11
Resetting the trip odometer ... .. .. .. .. 11
Retract New brake pads 190
Retractor
' . .. .. .............. ... .. . 141
Reverse (automat ic transmission) . .. .. . 110
Reversible mat ............ .... .. .. .. 69
Right hand drive .............. ... .. .. 52
Rollba r
refer to Active rollover protection sys -
tem ... .. .. .. .. ........... .. .. ... 135
s
Safe driving hab its
Safety 126
Airbag-System ........... .... .. .. . 146
Belts .. .. .. .. ........ ... .. ... ... . 138
Safety belt position ................. 142
Safety belts worn by pregnant women . 143
Safety belt pretens ioner ..... .. .. .. .. . 144
Service and disposal ...... .. .. .. .. . 145
Safety belts . . . . . . . . . . . . . . . . . . . 138, 141
Cleaning ... .. ........ ... .. ... ... . 207
Danger to passengers who do not wear a
safety belt .............. .. .. .. .. . 139 Fastening .
. . . . . . . . . . . . . . . . . . . . . . . 141
Improperly worn ... ............... 144
Ind icator light ... .. ................ 20
Not worn . .. .. .. ................. 139
Safety belt position . . . . . . . . . . . . . . . . 142
Safety instructions ................. 141
Securing child safety seats ...... .. .. 180
Spec ial considerations for pregnant
women . .. .. .. .. .. . .............. 143
Unfastening . .. .. .... ........... .. 143
Warning/indicator light ............. 138
Worn properly . . . . . . . . . . . . . . . . . . . . 140
Safety belt warning light ............. 138
Safety central locking ............ .. .. . 37
Safety compliance sticker ............ 279
Safety equ ipment ................... 126
Safety features for occupant restraint and
protection .. .. .. .. ................. 126
Safety instructions for using child safety seats .......... 173
for using safety belts .............. . 141
Monitoring the Advanced Airbag Sys -
tem .... .. .. .. .. .. ............... 161
Safety systems (indicator light) . . . . . . . . . 20
Scheduled maintenance interval
with dr iver information system . . . . . . . . 13
Screwdriver ....... .. ............... 261
Seat adjustment
Driver's seat . . . . . . . . . . . . . . . . . . . . . . . 59
Front passenger's seat . . . . . . . . . . . . . . . 60
Head restraints .................. . 130
Seat heating ....... ................. 74
Seating position Driver .... .. .. .. ................. 127
Front passenger .. .. ... ....... ..... 128
How to adjust the front seats ....... . 128
Incorrect seat position ............. . 130
Occupants . .. .. .. ............... .. 127
Rear passengers ...... ........... .. 129
Seats adjusting . . . . . . . . . . . . . . . . . . . . . 60, 61
Easy seat entry . . . . . . . . . . . . . . . . . . . . . 61
Folding ..... .. .. .. .. ........... .. . 66
Seats (number) .. ...... ............. 138
Selective wheel torque control ........ 188
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