2015 AUDI A3 CABRIOLET change key battery

LED and batteries in the remote control
key
Fig. 17 Remote control key: LED
Fig. 18 Remote control key: opening the cover
LED in the remote control key
The LED ¢ fig. 17 can tell you about the func­
tion of the remote control key .
.. If you press a button quickly, the LED blinks
once .
.. If you press a button longer (convenience
opening*), the LED blinks several t imes .
.. If the LED does not blink, the remote con­
trol key battery is dead. The message
1111
Plea se change key battery can also appear
in the instrument cluster display. Replace
the battery .
Replacing the remote control key battery
.. Pry off the cover w ith a coin¢ fig. 18.
.. Insert the new battery with the"+" facing
up.
.. Press the cover back onto the key until it
clicks into place.
We recommend having the battery replaced
~ by an authorized Audi dealer or qualified re-
S;: pair facility. co
rl I.O
"' rl
"' rl
Opening and closing 33
@) For the sake of the environment
Dead batteries must be disposed of using
methods that will not harm the environ­
ment. Do not dispose of them in house­
hold trash.
{!) Tips
The rep lacement battery must meet the
same specifications as the origina l battery.
Remote control key synchronization
The remote control key must be synchronized
if the veh icle does not lock and unlock w ith
the remote control.
.. Press the remote control key button
Im .
.. Insert the key in the driver door lock w ith in
30 seconds.
"' Press the
l@J button or~ button.
Unlocking/locking by remote control
Fig. 19 Remote control key or convenience key buttons
@ ffi Open
@ 6".i Close
© c:s Close rear lid
@I PANIC I Trigger the alarm
.. To unlock the vehicle, press the button@lm
¢fig. 19 .
"'To lock the vehicle, bring the selector lever
into the P posit ion and press the~ button
®·
"'To unlock the luggage compartment lid,
press the~ button
© briefly.

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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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_______________________________ I~ n~ d:::: e~x 287
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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