2015 AUDI A3 CABRIOLET change time

222 Checking and Filling
After you switch the engine off, the auxiliary
fan can continue running for up to 10 minutes
- even with the ignition off. It can even switch
on again later by itself
c:> .&. , if
- the temperature of the engine coolant rises
due to the heat build-up from the engine in
the engine compartment, or
- the engine compartment heats up beca use
the vehicle is parked in intense sunlight.
A WARNING
- To reduce the risk of personal injury
nev­
er touch the radiator fan.
- The auxiliary electr ic fan is temperature
contro lled and can switch on sudden ly
even when the engine is not running.
- The auxiliary radiator fan switches on au­ tomatically when the engine coolant
reaches a certain temperature and will
continue to run until the coolant temper­
ature drops.
Brake fluid
Checking brake fluid level
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Fig . 169 Engine compartment : cove r on the brake flu id
r eservoir
Before you check anything in the engine com­
partment,
always read and heed all WARN ·
INGS c:> page 214.
.. Read the brake fluid level from the brake
fluid reservoir
c:> fig.169, c:>poge216 ,
fig. 165.
The brake f luid level must be be­
tween the "MIN" and "MAX" markings.
The location of the brake fluid reservoir can be
seen in the engine compartment illustration
c:> page 216 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads . This is not cause for a larm.
If the brake f luid level falls
considerably be ­
low the "MIN" mark, the brake warning/indi­
cator light . (U.S. models)
I. (Canad ian
models) will come on
c:> page 18 . Do not con ­
tinue to operate the vehicle. The complete brake system should be thoroughly checked
by an authorized Audi dealer or other quali ­
fied facility and the cause corrected. If the
brake fluid level is too low, the brake warning/
indicator ligh t will illuminate. Contact an au­
thorized Audi dea ler
immediately.
Changing brake fluid
Have the broke fluid changed by an experi­
enced technician.
Brake fluid absorbs moisture from the air. If
the water content in the brake f luid is too
high, corrosion in the brake system may result
after a period of time. The boiling point of the
brake fluid will also decrease considerably and
decrease braking performance.
T he refo re, the brake fluid must be changed
every two years. Always use new brake fluid
wh ich conforms to Federal Motor Vehicle
Standard "FMVSS 116 DOT 4".
T he brake fluid reservoir can be difficult to
reach, therefore, we recommend that you
have the b rake fluid changed by your author­
ized
Audi dealer. Your dealer has the correct
tools, the right brake fluid and the know-how
to do this for you .
A WARNING
---Brake flu id is poisonous. It must be stor­
ed only in the closed or iginal container
out of the reach of children!
- Brake failure can resu lt from o ld or inap·
propriate brake flu id. Observe these pre·
cautions:
- Us e only brake fluid that meets SAE
specification
J 1703 and conforms to
Federa l Motor Vehicle Standard 116.

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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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-Do not interchange the positive and neg­
ative cables .
- When working on the battery , be sure
not to short-circuit the terminals with
tools or other metal objects. This would cause the battery to heat up very quickly,
which could lead to damage or explosion
and personal injury.
- When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal injury .
- Always keep the battery well out of the reach of children .
- Before work is done on the electrical sys­
tem, disconnect the negative ground ca ­
ble .
- Before performing any work on the elec ­
trical system , switch off the engine and
ignition as well as any electrical equip­
ment. The negative cable on the battery
must be disconnected. If you are just go­
ing to replace a light bulb, then it is
enough to switch off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you will set off the alarm.
- When disconnecting the battery, first
disconnect the negative cable and then
the positive cable.
- Before reconnecting the battery, make
sure all electrical consumers are switch­
ed off. Reconnect the positive cable first
and then the negative cable. Never inter­
change the cables - this could start a fire!
- Never charge a fro zen or a thawed-out
battery. It could explode! If a battery has
fro zen, then it must be replaced. A dead
battery can freeze over at 32°F (O°C) .
- Make sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery .
- Never use batteries which are damaged.
There is the danger of an explosion ! Al­
ways replace a damaged battery .
A WARNING
California Proposition 65 Warning:
Checking and Filling 225
-Battery posts, terminals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive problems . Wash hands after han­
dling.
(D Note
- Do not disconnect the vehicle battery
when the ignition is on or when the en­ gine is running, otherwise, you will dam­
age electronic components in the electri­
cal system.
- If your vehicle is going to stand for a
long period of time without being driven ,
protect the battery from "freezing", oth­
erwise it will be damaged and will then
have to be replaced.
Battery charging
Starting the engine requires a well charged
battery.
Fig. 170 E ngin e compar tmen t: co nn ecto rs fo r a charg­
e r and jump st art ca bles
Always read and heed all WARNINGS below
c:::> ,& and c:::> ,& in Working on the battery on
page
224 .
.,. Switch off the ignition and all electrical con­
sumers .
.,. Make sure the area is well ventilated when
you charge the battery.
.,. Open the engine hood
c:::> page 215 .
.,. Open the red cov er on the pos itive pole
c:::> fig. 170.
.,. Clamp the cha rger termin al clamps as in­
structed on the
battery terminal(+) and on-
l y on the
body ground point(-) . .,._

226 Check ing and F illin g
• Only now plug the mains lead for the charg ­
ing equipment into the wall outlet and turn
iton ¢_& .
• M ake sure the ch arging rate is not o ver
30 amp s / 14. 8 Volt.
• When the battery is fully charged: Turn the
charging equ ipment off and remove the
mains lead from the wa ll outlet .
• Now remove the clamps for the charg ing
equipment.
• Close the red cover on the posit ive po le.
• Close the hood
¢ page 216.
A discharged batte ry can fr eez e at tempera­
tures of on ly 32 F
0 (0 °C). A llow a frozen bat­
tery to thaw completely before attempting to
charge it¢ .&. . However, we recommend not
using a thawed battery again because the bat­
tery casing can be cracked due to ice forma­
tion and can leak battery acid.
Batt ery cha rg ing (Ma ximum cha rging rate
of
30 a mp s/ 14.8 Vo lt )
When charging at low voltages (e .g. w ith a
t ric kle char ger ), the battery cables do not
have to be d isconnected first . The battery
caps should
not be opened when charging a
battery.
It is not necessary to remove the battery from
the luggage compartment, and it is also not
necessary to disconnect the cables .
Fas t ch arg ing th e batter y (charging r ate
above 14.8 Volt s)
For technical reasons do not use a battery
charger that uses voltage g reate r than
14 .8 Volts to charge your veh icle's battery .
A WARNING
-
Charging a batte ry can be dangerous.
- Always follow the operating instructions
provided by the batte ry charger manu­
facturer when charging your battery.
- Never charge a frozen battery .
It may ex­
plode because of gas t rapped in the ice.
Allow a frozen batte ry to thaw o ut first.
- Do not reuse batteries which were fro­
zen. The batte ry housing may have cracked and weakened when the battery
froze.
- Charge the battery in a well ventilated
area. Keep away from open flame or elec­
tr ical spark. Do not smoke. Hydrogen gas
generated by the battery is explos ive.
- To reduce the danger of explosion, never connect or d isconnect charger cables
while the charger is operat ing .
- Fast charging a battery is dangerous and
should only be attempted by a compe­
tent techn ic ian with the proper equip­
ment.
- Battery acid that may sp ill dur ing charg­
i n g should be washed off with a solut ion
of warm water and baking soda to neu­
tralize the ac id.
(D Note
Never use a fast charger as a booster to
start the eng ine . Th is w ill seriously dam­
age sens it ive e lectronic components, such
as contro l units, re lays, radio, etc., as well
as the battery charger.
Battery replacement
The new battery must have the same specifi­
cations and dimensions as the original equip­
ment battery.
Intelligent energy management in your vehi­
cle is responsible for distributing the elect ri­
ca l ene rgy th rougho ut yo ur vehicle
¢page 193. The intelligent energy manage­
ment system will keep the engine battery
charged better than vehicles without this sys­
tem. To make sure the additional electrical en­
ergy is ava ilable once again after you have
changed the battery, we recommend that you
install batteries of the same type and manu ­
facture only (the same as those installed at
the time your veh icle was de livered) . Specifi­
cations are listed on the batte ry housing. Your
a utho rized deale r must code the batte ry in
the energy management system to enab le you
to use the energy management functions cor -
rect ly after replacing the battery.
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Recommended inflation
pressure
see¢ page 231J Cold tire infla­
tion pressure.
Reinforced tire
means a tire design to operate
at higher loads and at higher
inflation pressures than the
corresponding standard tire. Reinforced tires may be identi­
fied as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
Rim
means a metal support for a
tire or a tire and tube assembly
upon which the tire beads are
seated.
Rim diameter
means nominal diameter of the
bead seat. If you change your
wheel size, you will have to pur­ chase new ti res to match the
new rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance be­
tween rim flanges.
Tires and wheels 233
Sidewall
means that portion of a tire be­
tween the tread and bead.
Speed rating (letter code)
means the speed at which a tire
is designed to be driven for ex­
tended periods of time. The rat­ ings range from 93 mph
(150 km/h) to 186 mph
(298 km/h) ¢
page 251. You
may not find this information
on all tires because it is not re­
quired by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates
the maximum permissible road speeds ¢
& in Winter tires on
page 255.
Tire pressure monitoring system
means a system that detects
when one or more of a vehicle's
tires are underinflated and illu ­
minates a low tire pressure
warning telltale.
Tread
means that portion of a tire
that comes into contact with
the road.
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If you wish to improve comfort
when operating the vehicle at
normal load (up to 3 occu­
pants), you can adjust tire
pressures to those specified
for normal vehicle load. Before
operating the vehicle at maxi­ mum load, you must increase
the tire pressures to those
specified for maximum vehicle
load
c> .&. .
Bear in mind that the tire pres­
sure monitoring system can on­
ly monitor the tire pressures
you have stored. The system does not recognize the load
condition of your vehicle.
The effectiveness of the tire pressure monitoring system
will be impaired if you store normal load pressures but then
operate the vehicle at its maxi­
mum load
c> .&. .
Tires and wheels 237
See the illustration c> fig. 172
for the location of the label on
driver's side B-pillar (color of
the actual label and exact loca­
tion on the vehicle will vary slightly).
Note that the following table is
accurate at the time of going to
press and is subject to change.
In the event of discrepancies,
the tire pressure label is locat­ ed on the driver's side B-pillar
always takes precedence.
The table below lists the rec­ ommended cold tire inflation pressures for the Audi model
covered by your Owner's Litera­
ture at the vehicle's capacity
weight and the tire sizes instal­
led on the respective models as
original equipment, or as a fac-
tory option. ..,.
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reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your veh icle has also been equ ipped with a
TPMS malfunction indicato r to indica te when
the system is not operating properly . The
TPMS malfunction indicator is combined with
the low tire pressure tellta le . When the sys­
tem detects a malfunct ion, the telltale will
flash for approximately one minute and then
remain cont inuous ly illuminated. This se ­
quence will continue upon subsequent vehicle
start-ups as long as the ma lfunction ex ists .
When the malfunct ion indicator is illuminat­
ed, the system may not be able to detect or
sig nal low t ire pressure as intended . TPMS
malfunct ions may occur for a variety of rea­
sons, including the installa tio n of replace­
ment or a lternate tires or whee ls on the veh i­
cle that prevent the TPMS from funct ion ing
properly. Always check the TPMS malfunction
tellta le after replacing one or more tires or
wheels on your veh icle to ensure that the re­
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
If the Tire Pressure Monitoring System
indicator appears
Applies to vehicles: with tire pressure monito ring system
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction .
Fig . 177 In strum ent clus te r: indica tor l igh t w ith mes ­
sage
Using the ABS sensors, the tire pressure moni­
toring system compares the t ire tread circum­
ference and vibration characteristics of the in­
d iv idual tires . If the pressure changes in one
Tire s an d wheel s 259
or more tires, this is indicated in the instru­
ment cluster disp lay with an indicator light
ti] and a message c:::> fig . 177. If only one tire
is affected, the locat ion of that tire will be in­
dicated. The message turns off after a few mi­
nutes . You can d isplay the message aga in
c:::> page 2 8 .
The tire pressures must be stored in the menu
display again each time the pressures change
(sw itching between partial and full load pres ­
sure) or after chang ing or replacing a t ire on
your vehicle
c:::> page 260 . The t ire press ure
monitori ng system only monito rs the tire
pressure yo u have stored . Yo u can find the rec ­
ommended t ire press ures for your vehicle on
the labe l on the driver 's doo r pillar
c:::> page235 .
Tire t read circumference and vib rat ion charac­
teristics can change and cause a tire pressu re
warning if :
- I f the tire pressure in one or mo re tires is
t oo low,
- the t ire has structural damage,
-The tire was replaced or the t ire p ressure
changed and it was not stored again
c:::> page 260 .
-The spare tire is installed .
Indicator light s
ti]-Loss of pressure in at least one tire c:::> &.
Check the tires and replace or repair if neces­
sary. Check/correct the pressures of all four
tires . Then store the t ire pressures in the MMI
c:::> page 2 60 .
DI (T ire Pressure Monitoring System) T ir e
press ure: S ystem malfunct ion!. If Ill ap­
pears afte r switching the ignition on or while
driv ing and the
ti] indicator l ight in the in­
str ume nt cluster b links for app rox imately one
minute and then stays on , the re is system
malfunction. Try to s to re the co rrec t ti re pres­
s u res
c:::> page 260. If the indicator light does
turn off or tu rns on again after a short period
of time, drive to yo ur authorized Aud i dea ler
or qualified repa ir facility immed iate ly to have
the malfunction corrected. .,..
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No. Equipment Ampere
Door/front passenger's side
F39 doors (for examp le, power
30
windows)
F40 Sockets 20
F41 Reversible front
passenger's
25
side safety belt tensioners
F42 Central locking components,
40
windshield washer system
F43 Headlights, light ing 30
F44 all wheel drive
15
F49 Starte
r, clutch sensor, head-
5
light re lay coil
FS3 Rear window defogger 30
The power seats* are protected v ia
ci rc uit
b reaker s
that automatically sw itch on after a
few seconds after the overload has been re­
duced.
(D Tips
Note that the following table was accurate
at the time of print ing and is subject to
change.
Left engine compartment fuse
assignment
F ig. 193 Engine compartme nt: fuse assignment
No.
Fl
F2
F3
F4
F5
F6
F7
F8
F9
FlO
F ll
F12
Fl3
FlS
F l 6
F l 7
Fl8
F19
F20
F22
F23
F24
F3 1
F32
Fu se s and bulb s 2 71
Equipment Ampere
E5C contro l modu le 40
ESC contro l modu le 40
Engine control module (gas-
15/30
oli ne/d iesel)
Engine cooling, eng ine com-
ponents, auxiliary heater 5/10
coi l relay (1+2), secondary
air injection pump relay
Engine components, tank 7.5/10/
system 15
Brake light sensor 5
Engine components, wa ter 7.5/10/
pumps 15
Oxygen sensor
10/15
Engine compone nts, ex-
haust door, glow time con- 5/10/20
tro l module, SU LEV valve
Fuel injectors, fuel control
15/20
module
Auxiliary heater heating ele- 40
ment 2
Auxilia ry heater heat ing ele-
40
ment 3
Automat ic transmiss ion con-
15/30
t ro l module
Horn 15
Ignit ion coil 5/20
ESC contro l module, engine
7.5
control module
T ermina l 30 (reference volt-
5
age)
Windsh ie ld wipers
30
Horn 10
Termina l 50 diagnosis
5
Starter 30
Auxilia ry heater heat ing ele-
40
ment 1
Vacuum pump 15
L E D head lights 5