2015 AUDI A3 CABRIOLET warning light

224 Check ing and F illin g
Avoid using power unnecessarily, especially in
city driving or on short trips. Have your au­
thor ized Audi dealer or authorized Audi Serv ­
ice Facility check the battery capacity before
the start of winter
c;,page 225. A well-charg­
ed battery will not only reduce starting prob ­
lems in cold weather, but it w ill also last lon­
ger .
A WARNING
-
-Wor k on the battery requires expert
knowledge. Contact your authorized Audi
dealer qualified repair facility for infor­
mation regarding the vehicle battery .
There is a risk for chemical burns or ex­
plosions.
- Never open the vehicle battery. Do not
t ry to change the battery e lectrolyte lev­
el. Otherwise exp losive gas will escape
from the battery and increase the risk of
an exp losion .
(D Tips
If your vehicle is not driven for severa l
weeks in very cold temperat ures, remove
the battery and store it in a place where it
w ill not freeze. This prevents the battery
from being damaged and need ing to be re ­
placed .
Working on the battery
Be especially careful when working on or near
the battery .
The battery is located in the luggage comp art­
ment under the floor . Before you check any­
thing in the luggage compartment,
re ad and
heed all WARNINGS
¢ ,& .
Always heed the s afet y warnings , when work­
ing on the vehicle battery or the vehicle elec ­
tr ica l system to preve nt injury .
The following WARNINGS are very
i mp ortan t wh en wo rking on th e battery :
Alw ay s hee d the followin g WARNING SYM ·
BOL S and safety pr ecaution s when w orking
on the battery.
®
Alwa ys wear eye prote ction .
&
Battery acid contain s sulfuri c acid.
Always wear glov es and e ye protec-
tion.
@
No
· spark s
· flames
· smoking .
~
When a battery is charged, it produ-
ces hyd rogen gas which is ex plosi ve
and could caus e personal injury.
®
Alwa ys keep th e batt ery well out of
rea ch of children .
A WARNING
Whenever working on the battery or on
the electrical system, there is the risk of
i njury, accident and even fire. Read and
heed the following WARNINGS:
- Always wear eye protection. Do not let
battery ac id or any lead particles get on
your skin or clothing. Shield your eyes.
Exp losive gases can cause blindness or
other inju ry.
- Battery acid conta ins sulfuric acid. Sulfu­
ric acid can cause blindness and severe
burns .
- Always wear g loves and eye protection.
Do not tilt the battery because acid
could leak out of the ventilat ion open­
ings.
- If you get battery ac id in your eyes or
on your skin, immediately rinse with
cold water for several minutes and get
med ica l attent ion.
- If you shou ld ingest any battery acid,
seek medical attention immediately .
- Do not expose the battery to an open
f lame, e lectr ic sparks or an open light.
- Do not smoke .
-

....,
N
r--. > co
rl I.O
"' rl
"' rl
-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(-) . .,._

M N
" > co ,...., \!) 1.1"1 ,...., 1.1"1 ,....,
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. .,..
•
•
•

260 Tire s and wheel s
& WARNING
-If the tire pressure warning light ti] in
the instrument cluster turns on, the
pressure in one or more tires is too low.
Reduce the vehicle speed immediately
and avoid any hard steering or braking
maneuvers . Stop as soon as possible,
check the t ire and inflate the tire to the
correct pressure, which is specified on
the tire pressu re labe l on the veh icle
<:?page 235. Driving with a t ire with low
pressure causes the tire to overheat and
can res ult in failure of the tire . Low pres ­
sure can a lso have a negat ive effect on
the driving and braking behavior of the
vehicle.
- The driver is responsible for maintaining
the correct tire pressures. You must
check the t ire pressures regularly.
- Under certain cond itions (such as a spor­
ty driving style, winter conditions or un­
paved roads), the pressure monitor ind i­
cator may be de layed .
- Ask your author ized dealer if r un-flat
t ires may be used on your vehicle.
- The tire pressure monitoring system can
also stop work ing when there is an ESC
malfunction.
- Using snow chains may result in a system
malfunction.
- The tires with the ident ificat ion "AO" or
"RO" ¢ page 248 have been matched
with your A udi tire pressure monitoring
system. We recommend that you use
these tires.
- The tire pressure monitoring system can
on ly mon itor the t ire pressure of the
driving tires . Check the tire pressu re of
the spa re wheel in the luggage com part­
ment so tha t if ne cessary i t is ready for
u se.
-
Storing tire pressures
Applies to vehicles: wit h tire press ure mo nitor ing system
A change in tire pressure or a change in tires
must be stored in the system.
The tire pressure is stored in the MMI.
.. Ma ke s ure before storing that the ti re pres ­
sures of a ll four tires meet the specified va l­
ues and are adapted to the load. Otherwise
the system could malfunction
¢ page 235.
.. Switch t he ignit ion on.
.. Select: the
I MENU I button > Car > Systems *
contro l butto n > Service & control > Tire
pre ssure monitor > Store tire pre ssure >
Yes , st ore n ow .
(D Tips
Do not store the tire pressures if snow
cha ins a re i nstalled. O therw ise the system
could m alfun ction.

264 What do I do now?
-Always store the vehicle tool kit, the jack
and the replaced tir e in the luggage com­
partment ¢
page 132.
Changing a wheel
When you change o wheel, follow these­
quence described below step-by-step and in
exactly that order .
1. Remove the decorative wheel cover*. For
more details see also¢
page 264, Deco­
rative wheel covers
or ¢ page 265,
Wheels with wheel bolt caps.
2 . Loosen the wheel bolts¢ page 265 .
3. Locate the proper mount ing point for the
jack and align the jack below that point
¢page 266.
4. Raise the car with the jack ¢ page 266.
5. Remove the
wheel with the flat tire and
then install
the spare ¢ page 267.
6. Tighten all wheel bolts lightly.
7 .
Lowe r the vehicle with the jack.
8 . Use the wheel bolt wrench and
firmly
tighten all whee l bolts c::> page 265.
9. Replace the decorative wheel cover*.
A WARNING
Always read and follow all WARNINGS and
information
c::> .&. in Raising the vehicle on
page
266 and c::> page 268.
After changing a wheel
A wheel change is not complete without the
doing the following .
• Always store the vehicle tool kit, the jack*
and the replaced tir e in the luggage com­
partment ~
page 132 .
• Check the tire pressure on the spare wheel
i mmediately after mount ing it.
• As soon as possible, have the
tightening
torques
on a ll wheel bo lts checked with a
torque wrench. The correct tightening tor­
que is 90 ft lb (120 Nm).
• Have the flat tire
replaced as soon as poss i­
ble.
(D Tips
- If you notice that the wheel bolts a re
corroded and difficult to turn while
chang ing a tire, they should be rep laced
before you check the tightening torque.
- Drive at reduced speed until you have the
tightening torques checked.
- After changing a whee l, the tire pressure
in all four tires must be checked/correct­
ed and the tire pressure monitoring indi­
cator must be stored in the MMI
c::>page260.
Decorative wheel covers
Applies to vehicles: wit h decorative whee l covers
The decorative wheel covers must be removed
first to access the wheel bolts .
Fig. 183 Chang ing a wheel : Remov ing th e w heel cover
Removing
.,. Insert the hook (provided with the vehicle
tool kit) in the hole in the whee l hub cover .
.,. Pull
off the decorative wheel cover
c::>fig.183.

272 Fuses and bulb s
Note that the following table was accurate
at the time of print ing and is subject to
change.
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace burned out bulbs for you.
It is becoming increas ingly more and more
d iff icu lt to replace vehicle light bulbs s ince in
many cases, other parts of the car must first
be removed before you are able to get to the
bu lb . Thi s appl ies especia lly to the light bu lbs
in the front of your car which you can on ly
reach through the engine compartment .
Sheet metal and bulb ho lders can have sha rp
edges that can cause ser ious cuts, and parts
must be co rrectly taken apart and then prop­
erly put back together to help prevent break­
age of parts and long term damage from wa­
ter that can enter housings that have not been
properly resealed.
For your safety, we recommend that you have
your authorized Audi dealer 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 electrical vo ltage, have the
bu lbs rep laced by a qualified technician.
Headlights with Xenon light can be identified
by the high voltage sticker.
LE D headlights* require no ma intenance .
Please contact your authorized Aud i dealer if a
bu lb needs to be replaced.
A WARNING
Contact with high-voltage components of
the electrical system and improper re­
placement of gas discharge (Xenon) head­
light bulbs can cause serious personal in­
jury and death . -
Xenon bulbs are pressurized and can ex­
plode when being changed.
- Changing Xenon lamps requires the spe­
cial training, instructions and equip­
ment.
- Only an authorized Audi dealer or other
qualified workshop should change the
bulbs in gas discharge lamps.
A WARNING
--
There are parts with sharp edges on the
openings and on the bulb holders that can
cause ser ious cuts .
- If you are uncertain about what to do,
have the work performed by an author­
ized Audi dealer or other qualified work­
shop. Serious personal injury may result
from improperly performed work.
(D Tips
- If you st ill prefer to replace the light
bulbs yourself, be aware that the engine
compartment is a hazardous area to
work in
~ page 214~ &
-It is best to ask your authorized Audi
dealer whenever you need to change a
bulb.

M N
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,...., ..,., ,....,
Emergency situations
General
This chapter is intended for trained emer­
gency crews and working personnel who have the necessary tools and equipment to
perform these operations.
Starting by pushing or
towing
(D Note
Vehicles with an automatic transmission
cannot be started by pushing or towing.
Starting with jumper
cables
If necessary, the engine can be started by
connecting it to the battery of another vehi­
cle.
If the engine should fail to start because of a
discharged or weak battery, the battery can be
connected to the battery of
another vehicle,
using a
pair of jumper cables to start the en­
gine.
Jumper cables
Use only jumper cables of sufficiently large
cross section to carry the starter current safe­
ly. Refer to the manufacturer's specifications.
Use only jumper cables with
insulated termi­
nal clamps which are distinctly marked :
plus(+) cable in most cases colored red
minus(-) cable
in most cases colored black.
A WARNING
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal
injury. Follow the instructions below for
safe handling of your vehicle's battery.
- Always shield your eyes and avoid lean­
ing over the battery whenever possible.
- A discharged battery can freeze at tem­
peratures just below 32 °F (0 °C). Before
Emergency situations 273
connecting a jumper cable, you must
thaw the frozen battery completely, oth­
erwise it could explode.
- Do not allow battery acid to contact eyes
or skin. Flush any contacted area with
water immediately .
- Improper use of a booster battery to start a vehicle may cause an explosion.
- Vehicle batteries generate explosive gas­
es. Keep sparks, flame and lighted ciga­
rettes away from batteries.
- Do not try to jump start any vehicle with a low acid level in the battery.
- The voltage of the booster battery must
also have a 12-volt rating. The capacity
(Ah) of the booster battery should not be
lower than that of the discharged bat­
tery . Use of batteries of different voltage
or substantially different "Ah" rating
may cause an explosion and personal in­
JU ry.
- Never charge a frozen battery. Gas trap­
ped in the ice may cause an explosion.
-Never charge or use a battery that has
been frozen. The battery case may have
be weakened.
- Use of batteries of different voltage or
substantially different capacity (Ah) rat­
ing may cause an explosion and injury.
The capacity (Ah) of the booster battery
should not be lower than that of the dis­
charged battery.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS ¢
page 214.
(D Note
-Applying a higher voltage booster bat­
tery will cause expensive damage to sen­
sitive electronic components, such as
control units, relays, radio, etc.
- There must be no electrical contact be­
tween the vehicles as otherwise current
could already start to flow as soon as the
positive(+) terminals are connected. ..,. •
•
•

28 6 Index
A
A/C (a utomatic cl imate control system) .. 72
A/C (manual cl imate control system) .. . . 71
Accessories . . . . . . . . . . . . . . . . . . . . 64, 284
Active la ne ass ist . . . . . . . . . . . . . . . . . . . . 99
Ac tiv ating vibrat ion warning .. .. .. ... 101
Adjusting steering time ... ... .. .... . 101
C leaning the camera area .. .. .. .... . 205
Driver messages .. ......... ... .... . 100
Indicator light .................... 100
switch ing on and off ............... 100
Active ro llover protection system .. ... . 135
Retracting ro llover protection ... .. .. . 136
Adapt ive cruise control . . . . . . . . . . . . . . . . 87
Automatic transm ission ... .. .. .... .. 91
C lean ing the sensor ................ 205
D river messages . . . . . . . . . . . . . . . . . . . . 93
General Information . . . . . . . . . . . . . . . . 87
Request for driver intervention . . . . . . . . 93
Stop-and-go traffic . . . . . . . . . . . . . . . . . 91
Adapt ive dampers .......... .. .. .... . 107
I ndicator light . .. ..... ... .. .. .... .. 25
Adapt ive light . . . . . . . . . . . . . . . . . . SO, 107
I ndicator light . . . . . . . . . . . . . . . . . . . . . 24
Adding W indshield washer fluid ..... .. .... . 227
Adj usting ai r distribution (Climate control
system) ..... ... .. ..... ... .. .. .... .. 73
Adjusting a ir vents ................... 74
Adjusting air vents (manual climate con-
trol system) . . . . . . . . . . . . . . . . . . . . . . . . . 71
Adj usting automatic headlights ... ... .. 51
Adjusting the center conso le lighting .... 53
Adjusting the temperat ure
manual climate control system .. .. .. . . 71
advanced key
refer to Convenience key . . . . . . . . . . . . . 78
A irbag .. .. .. ... .......... .. .. .. .. . 146
I ndicator ligh t . . . . . . . . . . . . . . . . . . . . . 20
A irbag system ................ ... .. . 167
Advanced Airbag System ............ 150
Advanced Airbag System components . 154
Ca re ... .. .. ............. .. .. .. .. . 162
C hi ldren . .... ........... .... .... . 17 1
C hi ld restra ints .................... 171
Components (front airbags) . ... .. .. . 154 Danger of fitting a ch
ild seat on the front
passenger seat ... .. ... ..... ... .. .. 148
Disposa l .. .. .. .. ... .. ..... ... .. .. 162
Front airbags . . . . . . . . . . . . . . . . 150, 152
How do the front airbags work? ...... 156
How many a irbags does my vehicle
have? ...... .. .. .. ... ....... ... .. 154
How the Advanced Airbag System com-
ponents work togethe r ............. 156
Important safe ty instru ct ions on the
knee airbag system .. .. ..... ... .. .. 165
Impo rtant things to know .. ... ... . .. 146
Knee airbags ..... .. ... ..... ... .. .. 163
Monitoring .... .. ............. .... 158
PASSENGER AIR BAG OFF light ... .... 159
Repairs ... .... .. ............. .... 162
Safety instructions ................ . 161
S ide a irbags ... .. .. ... ....... ... .. 165
Warning/Indicato r lights ....... .. .. 158
When must the system be inspected? . 158
Alarm system
refer to Anti-theft alarm system . . . . . . . 31
Alignment pin (changing the whee l) . ... 261
All-weather lights ( LED headlights) . .. .. . 49
All-wheel drive Winter tires . ... . ... ... .... ... .. .. 255
All wheel d rive .... ... .. ..... .... . .. 192
Alternato r
refer to Alternator (indicator light) ... . 20
Alternator (indicator light) . . . . . . . . . . . . 20
Amb ient lighting . . . . . . . . . . . . . . . . . . . . 52
Anti-freeze
refer to E ng ine coolant ............. 220
Anti- lock braking system ............. 188
Indicator light ................... .. 21
Anti-slip reg ulation . .... ..... ... .. .. 188
Indicator light ... ... .. ..... .... . .. . 21
An ti-theft a la rm system .......... .. .. . 31
Anti-theft protection Electronic immob ilizer .. ....... ... .. . 36
Audi active lane assist
refer to Active lane ass ist ..... .. .. .. . 99
Audi drive selec t .. .. ................ 10 7
Ind icator light . .. ... .......... .... . 25
Audi magnet ic r ide
refer to Adapt ive dampe rs .. .. .. .. .. 107