2015 AUDI A5 CABRIOLET light

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-To avoid being burned, do not spi ll anti­
freeze or coolant on the exhaust system or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­ ant can catch fire.
- Antifreeze is poisonous. Always store anti­
freeze in its original conta iner and well out
of the reach of ch ildren .
-If you drain the coolant, it must be caught
and safely stored in a proper container
clearly marked "poison" .
(D Note
-Do not add coolant if the expansion tank is
empty . Air could enter the cooling system
and damage the eng ine .
If this is the case,
do not continue driving. Seek profess ional
ass istance.
- Coolant pollutes the env ironment and could
cause an eng ine fire . Excess coolant will be
fo rced out through the pressure relief valve
i n the cap when the eng ine becomes hot.
- If, i n an emergency , only water can be add­
ed, the correct ratio between wa ter and an­
tifreeze
~ page 200 must be restored as
soon as possib le .
@) For the sake of the environment
Drained coolant should not be reused. Always
dispose o f used coolant while observ ing all
environmental regulations .
Radiator fan
The radiator fan switches on automatically by it­
self.
The radiator fan is driven by the engine via the V­
be lt . The viscous clu tch regulates the speed of
the fan ac cording to the temperature of the cool ­
ant.
An auxiliary e lectr ic rad iator fan* switches on and
off depend ing on coolant temperat ure and othe r
veh icle operati ng conditions.
Afte r you switch the engine off, the auxiliary fan
can continue runn ing for up to 10 minutes -even
Ch eck in g and Fillin g
with the ignition off . It can even switch on again
later by itself¢& , if
- the temperatu re of the engine coo lant rises due
to the heat build- up from the engine in the en­
gine compartment, or
- the engine compartment heats up because the
veh icle is parked in intense sun light .
A WARNING
-To reduce the risk of persona l injury never
touch the radiator fan .
- The auxiliary electric fan is temperature con­ trolled and can switch on suddenly even
when the engine is not running.
- The a uxiliary radiator fan sw itches on auto­
matica lly when the engine coolant reaches a
certain temperature and will continue to run
until the coolant temperature drops.
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a quick
glance .
Fig. 17 6 Engine compar tment : Cove r on the b rake fl uid
r e servoir
Before you check anyth ing in the engine compart ­
ment,
al way s read and h eed all WARNIN GS
¢ _.& in Working in the engine compartment on
page 195 .
.,. Read the brake fluid level from the b rake fluid
reservoir ¢
fig. 176, ¢ page 197, fig . 172 . The
brake fluid level must be between the
"MIN "
and "MAX " markings.
20 3

Checking and F ill in g
The brake fluid reservoir is located at the rear
partition of the engine compartment on t he left
side ¢
page 197.
The fl uid level may drop slightly after some time
due to the automatic adjustment of the brake
pads. This is not cause for alarm.
If the b ra ke fluid level fal ls considerably below
the "MIN" mark, the brake warn ing/indi cator
light (U.S. models:
1111 , Canadian models: . )
will come on ¢
page 15. Do not contin ue to oper­
ate the vehicle . The complete brake system
should be thoroughly checked by an author iz ed
Aud i dealer or qualified workshop and the cause
corrected . If the brake fluid level is too low, the
brake warning/ind icator light w ill illuminate .
Contact an authorized Audi dealer
i mmed iately .
{D) Tips
The brake fluid reservoir is located under­
neath the cove r.
Changing brake fluid
Have the brake fluid changed by an experienced
technician .
Brake fluid absorbs moist ure from the a ir. If the
water content in the brake fluid is too high, cor­ rosion in the brake system may result after a peri­
od of time . The boiling point of the brake flu id
w ill also decrease conside rably and dec rease
b rak ing perfo rmance.
Therefore, the brake flu id must be changed
e ve ry
two year s.
Always use new brake fluid w hich con­
forms to Fede ral Motor Vehicle Standard "FMVSS
1 16 DOT 4".
The brake fluid rese rvoir can be difficult to reach,
therefo re , we recommend that you have the
b rake fluid changed by your author ized
Audi
dealer .
Your dealer has the correct too ls , the
right brake fluid and the know-how to do t his for
you.
A WARNING
- B rake fluid is poisonous. It must be stored
on ly in the closed original container out of
the reach of children!
204
- Brake fail ure can resu lt from o ld or inappro­
priate brake fluid. Observe these precau ­
tions:
- Use only b rake fluid that meets SAE spec i­
f ica tion
J 170 3 and conform s to Federa l
Motor Vehicle Standard 116. Always check
with yo ur autho rized Audi dea le r to make
su re you are using the correct brake fl uid.
The correct type of brake flu id is also ind i­
cated on the brake fluid reservoir.
- The brake fl uid must be new. Heavy use of
the brakes can cause a vapor lock if the
brake f luid is left in the system too long.
This can seriously affect the efficiency of
the brakes as well as your safety. This
could result in an acc ident.
(D Note
Brake fluid will damage the paint of your vehi­
cle.
@ For the sake of the env ironment
Because of the prob lem of prope r disposal of
brake fluid as well as the special tools re­
qu ired and the necessary expert ise, we rec­
omme nd that you have the brake flu id
changed by you r autho rized Aud i dea le r.
Battery
, General information
U nder normal operating conditions, the battery
i n your Audi does not need any maintenance.
Wi th
high outside temperatures or long daily
drives we recommend that you have the e lectro ­
lyte level checked by an a uth orized Aud i deale r o r
qualified workshop . The electrolyte leve l should
a lso be checked each time the batte ry is c ha rged
~ page 206.
Have the battery checked when yo u take your ve­
hicle in for service . You a re well adv ised to re­
pla ce a battery that is older tha n 5 years.
With certain types of airbag deployment, the bat ­
te ry is disconnected from the veh icle elect rical
system for safety reasons
¢ & in Repair, care
and disposal of the airbags on page 1 45.

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Disconnecting the battery terminals
Some vehicle functions (power window regula­
tors , for example) are lost if the battery termi­
nals are disconnected. These functions have to be
re learned after th e battery terminals are con­
nected again. To prevent this, the batte ry should
only be disconnected from the ve hicle electrical
system when absolutely necessary for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period of
several days or weeks, e lectrica l components are
gradually cut back or switched off. This reduces
energy consumption and maintains starting ca­ pability over a longer period
c:> page 175 .
Some of the conven ience functions may not oper­
ate, such as the interior lights or the power seat
adjustment. The convenience functions will be
available aga in when you turn 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 while s tart ing, and
the headlights, rear window defogger, etc ., are
used more often .
Avoid unnecessary power consumption, part icu­
larly in city traffic or when traveling only short
d istances . Let your authorized Aud i dealer check
the capacity of the vehicle battery before w inter
sets in ¢
page 206 . A well charged battery will
not only prevent starting problems when the
weather is cold, but will also last longer.
(D Tips
If your vehicle is left standing for severa l
weeks at extremely low temperatures, the ve­
hicle battery should be removed and stored
where it will not freeze. This will prevent it
from being damaged and having to be re­ placed.
Checking and Filling
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart­
men t under the floor. Before you check anything
in the luggage compartment ,
read and heed all
WARNINGS
c:> .&_ .
Always heed the safety warnings, when working
on the vehicle battery or the vehicle electr ical
system to prevent injury .
The following WARNINGS are very important
when working on the battery :
Always heed the following WARNING SYM-
BOLS and safety precautions when working on
the battery.
®
Always wear eye protection.
A
Battery acid contains sulfuric acid. Al-
ways wear gloves and eye protection.
@
No
- sparks
- flames
- smoking.
~
When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal injury.
®
Always keep the battery well out of reach
of children.
A WARNING
= -
Whenever working on the battery or on the
e lectr ical system, there is the risk of injury,
accident and even f ire. Read and heed the fol ­
lowing WARNINGS:
- Always wear eye protection . Do not let bat­
tery ac id or any lead particles get on your
skin or clothing. Shield your eyes. Exp losive
gases can cause blindness or other in jury.
- Battery acid conta ins sulfuric acid . Sulfuric
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 ventilation openings. ...,
205

Checking and Filling
-If you get battery acid in your eyes or on
your skin, immediately rinse with cold wa­
ter for several minutes and get medical at­
tention .
- If you should ingest any battery acid, seek
medical attention immediately .
- Do not expose the battery to an open flame, electric sparks or an open light .
- Do not smoke .
- Do not interchange the positive and nega-
tive cables.
- When working on the battery , be sure not to
short-circuit the terminals with tools or oth­
er metal objects . This would cause the bat­
tery to heat up very quickly, which could lead to damage or explosion and personal
injury .
- When a battery is charged, it produces hy­
drogen 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 cable .
- Before performing any work on the electri­ cal system, switch off the engine and igni­
tion as well as any electrical equipment. The negative cable on the battery must be dis­
connected. If you are just going 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! Otherwise you
will set off the alarm.
- When disconnecting the battery, first dis­
connect the negative cable and then the
positive cable.
- Before reconnecting the battery, make sure
all electrical consumers are switched off. Re­
connect the positive cable first and then the
negative cable. Never interchange the ca­
bles -this could start a fire!
- Never charge a frozen or a thawed-out bat­
tery. It could explode! If a battery has fro ·
zen, then it must be replaced. A discharged
battery can freeze over at 32°F (0°C).
- Make sure the vent hose is always attached
to the opening on the side of the battery .
206
-Never use batteries which are damaged.
There is the danger of an explosion! Always
replace a damaged battery.
A WARNING
California Proposition 65 Warning:
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive problems .
Wash hands after handling .
(D Note
- Do not disconnect the vehicle battery when
the ignition is switched on or when the en­
gine is running, otherwise, you will damage
electronic components in the electrical sys­
tem .
-If your vehicle is going to stand for a long
period of time without being driven, protect
the battery from "freezing", otherwise it
will be damaged and will then have to be re­
placed .
Battery charging
Starting the engine requires a well charged bat­
tery.
Fig. 177 E n g in e compar tmen t: C on nectors fo r charger and
jump er cables
Always read and heed all WARNINGS below
9 A and ¢ A in Working on the battery on
page 205.
.,. Turn off the ignition and all electrical consum­
ers.
.,. Make sure the area is well ventilated when you
charge the battery.
Iii>-

Checking and Fill in g
th e e nergy management functions correctly after
replacing the battery.
If i t is not poss ible to use a battery of this type,
the new battery must have the same capacity,
voltage (12-vo lts), amperage, construct ion and
p lug sealing.
When insta lling the battery, make sure the igni­
tion and all elec trical consumers are t urned off.
CD Note
Make sure the ventilation hose on the s ide of
t he batte ry is connected, otherwise fumes or
bat tery ac id can leak out.
@ For the sake of the environment
Because of the problem of proper d isposa l of
a battery, we recommend your author ized
Audi dea le r change the battery for yo u. Ba t­
teries contain su lfuric acid and lead and must
always be disposed of properly in compliance
w ith all environmenta l reg ulations. D isposing
of vehicle batteries improperly is very danger­
ous to the environment.
Windshield/headlight* washer container
Fig. 178 Engine co mpa rtment : Cove r on th e w in d shiel d
an d h ead ligh t• was her fl uid container
The washer fluid containe r is marked with the
symbol
O on its cap ¢ fig . 178 , ¢page 197,
fig . 172 .
.,. Before you check anyth ing in the eng ine com­
partment , alw ays re ad and he ed all WARN·
I NGS
¢ ,& in Working in the engine comport­
ment on page 195 .
208
.,. Lift the filler cap tongue to add washer fluid.
Yo u can fill the container to the top.
.,. Press the cap back onto the filler neck after fill-
ing the container .
You can find the reservoir ca p acit y in the table in
~ page 246.
Clean water should be used when filling up. If
possible, use soft water to prevent scaling on the
washer jets . Always add a g lass cleaner solution
(with frost protection in the winter) .
CD Note
Do not mix engine coolant antifreeze or any
other additives to fill up the windsh ield wash­
er reservoir.

Wheels
Wheels and Tires
General information
.,.Che ck your tires regularly for
damage (punctures, cuts, cracks
and bulges). Remove foreign ob­
jects from the tire tread.
.,. If driving over curbs or similar
obstacles, drive slowly and ap­
proach the curb at an angle.
.,.Have faulty tires or rims re­
placed immediately.
"'Protec t your tires from oil,
grease and fuel.
.,.Ma rk tires before removing
them so that the same running direction can be maintained if
they are reinstalled .
.,.Lay tires flat when storing and
store them in a cool, dry location
with as little exposure to light as
possible.
(D Note
-Please note that summer and
winter tires are designed for
the conditions that are typical
in those seasons. Audi recom­
mends using winter tires dur­
ing the winter months. Low
temperatures significantly de­ crease the elasticity of summ­
er tires, which affects traction
Wheels
and braking ability. If summer
tires are used in very cold tem­
peratures, cracks can form on
the tread bars, resulting in
permanent tire damage that
can cause loud driving noise
and unbalanced tires.
-Burnished, polished or
chromed rims must not be
used in winter driving condi­
tions. The surface of the rims
does not have sufficient corro­
sion protection for this and
could be permanently dam­
aged by road salt or similar
substances.
Tire designations
Fig. 179 T ir e designations on the sid e-
wall ,..
209

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also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop­
ping ability .
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re­
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres­
sure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the sys­
tem is not operating properly. The TPMS mal­
function indicator is combined with the low tire pressure telltale . When the system detects a
malfunct ion, the telltale will flash for approxi­
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent veh icle start-ups as long as the mal­
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function properly.
Wheels
If the Tire Pressure Monitoring System
indicator appears
Appl ies to vehicles : wi th t ir e p ress ure mo nito rin g 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. 183 Instrument cluster: i ndicator light with message
Using the ABS sensors, the tire pressure monitor­
ing system compares the tire tread circumference
and vibration characteristics of the individual
tires .
If the pressure changes in one or more
tires, this is indicated in the instrument cluster
display with an indicator light
[I] and a message .
If only one tire is affected, the location of that
tire will be indicated .
The tire pressures must be stored in the Infotain­
ment system again each time the pressures
change (switching between partial and full load
pressure) or after changing or replacing a tire on
your vehicle ¢
page 228. The tire pressure moni­
toring system only monitors the tire pressure you have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
r=> page 219, fig . 182.
Tire tread circumference and vibration character­
istics can change and cause a tire pressure warn­
ing if:
- the tire pressure in one or more tires is too low .
- the tire has structural damage.
- the tir e was replaced or the tire pressure was
changed and it was not stored ¢
page 228.
-the spare t ire* is installed.
Indicator lights
[I] Loss of pressure in at least one tire¢.& .
Check the tires and replace or repair if necessary .
liJJ,-
227

Wheels
Check/correct the pressures of all four tires and
store the pressure again in the Infotainment sys­
tem
c!) page 228.
mm (Tire Pressure Monitoring System) Tire pres­
sure: System malfunction!.
If m appears after
switching the ignition on or while driving and the
[I] i ndicator light in the instrument cluster
blinks for approximately one minute and then
stays on, there is system malfunction. Try to
store the correct tire pressures
c:> page 228 . If
the indicator light does turn off or turns on again
after a short period of time, drive to your author­
ized Audi dealer or qualified repair facility imme­
diately to have the malfunction corrected.
A WARNING
-If the tire pressure indicator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu­
vers. Stop as soon as possible and check the
tires and their pressure.
- The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
-Under certain conditions (such as a sporty
driving style, winter conditions or unpaved
roads), the tire pressure monitoring system
indicator may be delayed.
- Do not use run-flat tires on your vehicle. Us­
ing them when not permitted can lead to
vehicle damage or accidents.
(D Tips
- The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function.
- Using snow chains may result in a system
malfunction.
- The tires with the identification "AO" or
"RO"
c:> page 216 have been matched with
your Audi tire pressure monitoring system.
We recommend that you use these tires.
228
· Storing tire pressures
App lies to vehicles: wit h tire press ure mo nitor ing system
If the tire pressure changes or a tire is replaced,
it must be confirmed in the Infotainment sys­
tem .
.,. Make sure before storing that the tire pressures
of all four tires meet the spec ified values and
are adapted to the load
c!) page 219.
.,. Switch the ignition on.
.,. Select: the
I CARI function button > Tire pres­
sure monitoring
control button. Or
.,. Select: the
I CARI function button > Car Sys­
tems*
control button > Servicing & checks >
Tire pressure monitoring.
(D Tips
Do not store the tire pressures if snow chains
a re i nsta lied.