2017 AUDI A5 CABRIOLET ignition

Checking and Filling
compartment. Wait until no steam or cool­
ant can be seen or heard before carefully
opening the hood.
- Keep children away from the engine com­
partment.
- Never spill fluids on hot engine compo­
nents. They can cause a fire.
- Never touch the radiator fan. The auxiliary
electric fan is temperature controlled and
can switch on suddenly.
- Never open the coolant reservoir cap when
the engine is still warm . The coolant system
is pressurized and hot coolant could spray
out.
- Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the coolant reservoir .
- Do not remove the engine cover under any
circumstances . This increases the risk of
burns.
- If work on the fuel system or the electrical
system is necessary:
= Always disconnect the battery.
- Never smoke or work near heaters or open
flames. Fluids in the engine compartment
could start a fire.
- Keep an approved fire extinguisher imme­
diately available.
- To avoid electrical shock and personal injury
while the engine is running or being started,
never touch:
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair with
the engine running:
- First, fully apply the parking brake, move
selector lever of automatic transmission
to "P" (Park).
- Always use extreme caution to prevent
clothing , jewelry, or long hair from get-
194
ting caught in the radiator fan, V-belts or
other moving parts, or from contacting
hot parts. Tie back hair before starting,
and do not wear clothing that will hang or
droop into the engine.
- Minimize exposure to emission and chemi­
cal hazards
c::> &.
A WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm .
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
([) Note
When adding fluids, always make sure that
they are poured into the proper container or
filler opening, otherwise serious damage to
vehicle systems will occur.
@ For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly. If you
see spots from oil or other vehicle fluids, have
your vehicle inspected by an authorized Audi dealer .

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@ Tips
-The oil pre ssure w arning display. i s not
an indicator of the oil level. Do not rel y on
it. Instead , check the oil level in your en­
gine at regular inte rval s, preferably each
t ime you refuel , and alway s befo re going
on a long trip.
- If you have the impression your engine con­
sumes excessive amounts of oil, we recom­
mend that you cons ult an autho rized Aud i
dealer to have the cause of your concern properly d iagnosed. Keep in mind that the
accurate measurement of oil consump tion
requi res great care and may take some
time. An a uthorized Audi dea ler has instruc ­
tions about how to measure oil consump ­
tion accurately.
Checking the engine oil level
Fig. 172 MM I D isp lay: O il leve l in dicator
Read oil level
.. Park yo ur vehicle so that it is hor izontally level.
.. Shu t the engine off w hen it is at operat ing tem-
perature.
.. Switch only the ignition back on.
.. Wait approx . two mi nutes .
.. Se lect : Function button
~IC~A~R~I > Oil le vel. Or
.. Select : Funct ion button
ICARI > C ar sy stems *
contro l button > S ervici ng & checks > Oil leve l.
.. Read the oil level in the MMI* Display
¢fig . 172. Add engine o il if the bar of the oil
level indicator is near "min"
r::;, page 197
Depending on the way the vehicle is driven and
the operating cond itions, o il cons umption can be
up to a 1/2 quart per 600 m iles (0.5 liter per
Checking and Filling
1,000 km) . Consumptio n may be higher w ithin
the first 3,000 mi les (5,000 km).
(D Tips
The oil leve l indicato r in the M MI * Display is
on ly an information display. If the oi l level is
too low, a minimum oil warning appears in
the instr ument cluster . Add oil¢
page 197 .
If the hood has been opened, the current oil
l evel is shown in the instrument cluster the
next time the ignit ion is switched on.
"l=:7: Adding engine oil
Fig. 173 En g in e compartment: Cover on the oil filler nec k
.. Before you check anything in the eng ine com­
partment,
a lwa ys read and heed all WARN ­
INGS
r::;, .&. in Working in the engine compart­
ment on page 193 .
.. Shu t the eng ine off .
.. Uns crew the cap
't=;,: to the engine oil filling
hole
r::;, fig. 173, r::;,page 195, fig. 171 .
.. Carefully top o ff wi th 0.5 quarts (0.5 liters) of
the appropriate oil
r::;, page 195 .
.. Check the oil level again after two minutes
r::;, page 197, Checking the engine oil level.
.. Top off the o il again, if necessary .
.. Screw the cap back on the filling hole .
A WARNING
-- Wh ile topping off, the o il must not come in
con tact w ith ho t engine parts - fi re hazard!
- The oil filler cap must be p roper ly secured
to p revent o il from being sprayed on t he ho t
engine and exhaust system when the engine
is running - fi re ha zard!
~
197

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A WARNING ,~
- The cooling system is under pressure and
can get very hot. Reduce the risk of scald ing
from hot coolant by following these steps.
- Turn
off the engine and allow it to coo l
down.
- Protect you r face, hands and arms from
escaping fluid and steam by cover ing the
cap with a large, thick rag.
- Turn the cap slowly and very carefully in a
counter-clockwise d irection while applying
light, downward p ressure on the top of
the cap.
- To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system or
hot engine parts. Under certa in cond i­
tions, the ethylene glycol in eng ine cool­
ant can catch fire.
- Antifreeze is poisonous. Always store anti­
freeze in its orig inal container and well out
of the reach of children.
- If you dra in the coolant, it must be caught
and safely stored in a proper conta iner
clearly marked "poison".
- Do not add coolant if the expansion tank is
empty. Air cou ld enter the cooling system
and damage the eng ine. If this is the case,
do not continue driving . Seek professional
ass istance.
- Coolant pollutes the env ironment and could
cause an eng ine fire. Excess coolant will be
fo rced o ut through the pressure relief valve
i n the cap when the e ng ine be comes hot.
- If, in an emergency, only wate r can be add­
ed, the co rrect r atio betwee n wate r and an­
tifree ze
Q page 199 must be res to red as
soon as possib le.
{® For the sake of the environment
Dra ined coolant sho uld not be reused. Always
disp ose of used coolant while obse rving all
env ironment al regulat ions.
-
Ch eck ing and Filling
Rad iator fan
The radiator fan switches on automatically by it­
self .
The radiator fan is driven by the engine via the V­
belt. The viscous clutch regulates th e speed of
the fan accord ing to the temperature of the cool­
ant .
An auxiliary e lectr ic radiator fan* switches on and
off depending on coo lant temperature and other
vehicle operating conditions.
After you switch the engine
off, the auxiliary fan
can continue running for up to 10 m inutes -even
with the ignition
off. It can even switch on aga in
later by itself
Q .& , if
- the temperature of the engine coolant rises due
to the heat build-up from the engine in the en­
gine compartment, or
- the engine compartment heats up beca use the
veh icle is parked in intense sunlight.
A WARNING
- To reduce the r isk of persona l injury neve r
touch the radia to r fan .
- The auxiliary e lectr ic fan is temperature
controlled and can switch on s uddenly even
when the engine is not ru nning .
- The a uxiliary radiator fan sw itches on auto­
mat ically when the eng ine coolant reaches a
certa in temperature a nd will continue to run
until the coolant temperature d rops.
201

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@ For the sake of the environment
Because of the problem of proper disposal of
brake fluid as we ll as the special toots re­
quired and the necessary expertise, we rec­
ommend that you have the brake fluid
changed by your authorized Audi dealer .
Battery
General information
Under normal operating conditions, the battery
in your Audi does not need any maintenance.
With
high outside temperatures or long daily
drives we recommend that you have the electro­
lyte level checked by an authorized Audi dealer or
qualified workshop. The electrolyte level should
also be checked each time the battery is charged
¢ page 205.
Have the battery checked when you take your ve­
hicle in for serv ice. You are well advised to re­
place a battery t hat is older than 5 years.
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
relearned after the battery terminals are con­
nected again. To prevent th is, the battery should
only be disco nnected from the vehicle e lectr ica l
system when abso lutely necessary for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period of
several days or weeks, electrical components are
gradually cut back or sw itched off. This reduces
energy consumption and maintains starting ca ­
pability over a longer period¢
page 173.
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 again when you turn on the ignition and
start the engine.
Winter operation
During the winter months, battery capacity tends
to decrease as temperatures drop . T his is be-
Checking and Filling
cause more power is also consumed while start­
ing, and the headlights, rear window defogger,
etc., are used more often.
Avo id unnecessary power consumption, particu­
larly in city traff ic or when traveling only short
distances . Let your authorized Audi dealer check
the capacity of the vehicle battery before winter
sets in ¢
page 205. 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 several
weeks at extremely low temperatures, the ve­
hicle battery should be removed and stored
where it w ill not freeze. This will prevent it
from be ing damaged and having 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 compart­
ment under the floo r. Before you check anything
in the luggage compartment,
read and heed all
WARNINGS ¢
LD.·
Always heed the safety warnings, when working
on the vehicle battery or the veh icle electrical
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.
203

Checking and Filling
A
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
electrical system, there is the risk of injury ,
accident and even fire. Read and heed the fol­
lowing WARNINGS:
- Always wear eye protection. Do not let bat ­
tery acid or any lead particles get on your
skin or clothing. Shield your eyes. Explosive gases can cause blindness or other injury.
- Battery acid contains sulfuric acid. Sulfuric acid can cause blindness and severe burns.
- Always wear gloves and eye protection . Do
not tilt the battery because acid could leak
out of the ventilation openings.
- 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
lnJUry.
- 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
204
-
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 .
Reconnect the positive cable first and then
the negative cable . Never interchange the
cables - 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 .
- 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 .

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Battery charging
Starting the engine requires a well charged bat­tery .
Fig. 1 76 Engine co mpartment: Co nnectors for charger and
j u mpe r cab les
A lways read and h eed all WARNINGS be low
¢ &. and
¢&. in Working on the battery on
page 204 .
•Turnoff the ignition and all electr ica l consum­
ers .
• Make sure the area is well vent ilated when you
charge the battery .
• Open the engi ne hood ~
page 193.
• Open the cover on the posit ive pole ¢ fig . 176.
• Connec t the charger connecto rs accord ing to
the instructions to the
jump start bolts . (Bolts
under the cover= "positive", Bo lts with hex
head = "negat ive").
• Only now plug the mains lead for the charging
equipment into the wall outlet and turn it on
c> &, .
• Make sure the charging rate is not ov er
30 amps /14 .8 Volt .
• When the ba tte ry is fu lly charged : Tur n the
charg ing equipmen t off and remove the mains
l ead from the wall outlet.
• Now remove the clamps fo r the cha rging equ ip-
ment.
• Close the cover on the posit ive pole.
• Close the hood ¢
page 193 .
A discharged battery can freeze at temperatures
of only 32 °F (0 °C). A llow a frozen battery to
thaw comp lete ly before attempting to charge it
¢
& . However , we recommend not us ing a
thawed battery again because the battery cas ing
Checking and Filling
can be cracked due to ice forma tion and can leak
battery acid.
Battery charging (Maximum charging rate of
30 amps /14.8 Volt)
When charging at low voltages (e .g . with a trick­
le charger ),
the battery cables do not have to be
disconnected f irst . T he battery caps should
not
be opened when charging a battery .
It is not necessary to remove the battery from
the luggage compartment .
Fast charging the battery (charging rate
above 14 .8 Volts)
F or techn ical reasons do not use a battery cha rg­
er that uses vo ltage greater than 14.8 Vo lts to
charge your vehicle 's battery .
_8 WARNING ~
Charging a battery can be dangerous.
- Always follow the operating instructions
provided by the battery charger manufactur­
er when charging your battery.
- Never charge a froze n battery . It may ex ­
p lode because of gas trapped in the ice. Al·
low a froze n battery to thaw out first.
- Do not reuse batter ies which were frozen.
The battery hous ing may have cracked and
weakened when the battery froze .
- Charge the battery in a well ventilated area.
Keep away from open flame or electrical
spark . Do not smoke . Hydrogen gas generat­
ed by the battery is explos ive.
- To reduce the danger of explosion , never
connect or d isconnect charger cables while
the charge r is operating .
- Fast charg ing a battery is dange rous and
should only be attempted by a competent
technician w ith the proper equipment.
- Battery acid that may spill during charging
should be washed off w ith a so lution of
warm wa ter and baking soda to neutra lize
the acid .
205

Wheels
Check/correc t the p ress ures o f all four tires and
store the pressure again in the Infotainment sys­
tem
¢ page 226.
mm (Ti re Pressure Moni to ring System) Tire
pressure: S ystem malfunction !.
Ifm:im appears
afte r switc hing the ignition on or whi le driving
and the
RI] i ndicator light in the instrument cl us­
ter blinks for approximate ly one minute and then
stays on, there is system malfunction. Try to
store the correct tire pressures¢
page 226 . If
the ind icator light does tur n off or turns on again
after a short period of t ime, dr ive to an a uthor­
ized Audi dealer o r autho rized Aud i Service Faci li­
ty immedia tely to have the malfunct ion corre ct­
ed .
A WARNING
- If the ti re pressu re indicator appears in the
display, reduce your speed immediate ly and
avoid any hard steering or braking maneu­
vers. Stop as soon as possib le and check the
t ires and t heir pressure.
- The driver is responsib le for maintaining the
correct tire pressure. You must check the
t ire pressure regu larly .
- Under certain conditions (such as a sporty
dr iv ing style, winter cond itions or unpaved
roads), the tire pressure mo nitoring system
indicator may be delayed.
- Do not use run-flat tires on your vehicle. Us­
ing them when not permitted ca n lead to
vehicle damage or accidents.
(D Tips
- The t ire pressure monitoring system can al­
so stop work ing when there is an ESC mal­
funct io n.
- Using snow chains may result in a system
malfunction.
- The t ires with the identification "AO" or
"RO" ¢
page 214 have been matched with
your Audi tire pressure monitoring system .
We recommend that you use these t ires.
226
· Storing tire pressures
Applies to: vehicles with Tire Pressure Mon itor ing System
If the tire pressure changes or a tire is replaced,
it must be confirmed in the Infotainment sys­
tem .
.. Make sure before stor ing that the t ire pressures
of all four tires mee t the specified values and
are adapted to the load ¢
page 217 .
.. Switch the ignit io n on .
.. Sele ct: the
I CARI fu nct ion button > Tire pres­
s ure monitoring
cont rol button. O r
.. Select: the
I CAR I fun ct ion but ton > Car Sys­
tem s*
control b utton > Service & check s > Tire
pressure monitoring.
(D Tips
Do not store the tire pressures if snow chains
are installed .

Fuses and bulbs
Fuses and bulbs
Fuses
Replacing a fuse
A fuse that hast blown will have metal strips
that have burned through .
Fig. 192 Left cockpit: fuse panel cover
The fuses are located at the front left and right
of the cockpit and behind the trim on the right
side of the luggage compartment.
• Switch the ignition and all electr ical equipment
off.
• Check the following table to see which fuse be­
longs to the equipment.
• Remove the appropriate cover.
• Remove the colored plastic clip from the fuse
panel, if necessary
¢page 234, fig. 193. You
can dispose of the plastic clip.
• Remove the clamp from the rear side of the
cover ¢fig.192.
• Remove the fuse using the clamp.
• Replace the blown fuse only with an identical
new one.
• Install the cover.
Fuse color identification
Color Current in
amps
Black 1
Purple 3
Light brown 5
Brown 7.5
Red 10
Blue 15
Yellow 20
White or transparent 25
234
Color Current in amps
Green 30
Orange 40
A WARNING
Do not repair fuses and never replace a blown
fuse with one that has a higher amp rating.
This can cause damage to the e lectrica l sys­
tem and a fire.
(D Note
If a new fuse burns out again after shortly
have you have installed it, have the electrical
system checked by your authorized Audi deal­
er.
(D Tips
- The following table does not list fuse loca­
tions that are not used.
- Some of the equipment items listed are op­
tional or only available on certain model configurations.
Left cockpit fuse assignment
Fig. 193 Left cockpit : fuse panel with plastic clip