2015 AUDI A3 CABRIOLET oil temperature

12 Instrum ent s and indicator lamp s
Fuel level
The display @
c;, page 10, fig. 3 only works
when the ignition is sw itched on . When the
d isplay has reached the reserve mark, the bot­
tom LED wi ll turn red and the
tD indicator
light turns on¢
page 23 . The bottom LED
blinks red when the fue l level is very low .
The on -board computer shows the range
based on the fuel leve l
c;, page 2 7, On-board
computer display.
F or the tank capac ity in yo ur vehicle , refer to
the Tec hnical Data ¢
page 280.
CJ) Note
Never d rive until the tank is completely
empty. The irregular supp ly of fuel that re­
sults from that can cause the engine to
misfire. Uncombusted f uel will then enter
the exha ust system. This can cause over­
heating and damage to the catalytic con­
verter .
Coolant temperature indicator
The coolant temperature ind icator @
c::> page 10, fig . 3 only works when the ignition
is switched on . T o prevent engine damage, ob­
serve the fo llow ing notes about the tempe ra­
ture ranges.
Cold range
If only the LEDs at the bottom of the gauge
turn on, the engine has not reached operat ing
temperature yet . Avoid high engine speeds,
fu ll acce le rat ing and heavy engine loads.
Norm al range
The engine has reached its operating temper­
ature once the LEDs up to the center of the
gauge turn on under normal driving condi­
tions. The L EDs higher up may turn on if the
engine is under heavy load or the o uts ide tem­
perat ure is h igh. This is not a cause for con­
cern as long as the. indicator light in the
display does not t urn on. Hot range
If the L
EDs in the upper area of the d isp lay
and the. indicator light in the instrumen t
cluster disp lay t urn on, the coo lant tempe ra­
ture is too high
c::> poge 19.
A WARNING
-Always observe the warning in
c;, page 214 before opening the hood
and checking the engine coolant level.
- Never open the eng ine hood if you see or
hear steam, or if you see engine coo lant
dripping from the engine compartment .
You could burn yourself. Let the engi ne
coo l off first until you can no longe r see
or hea r steam or coolant escaping.
([) Note
- Add itiona l headlights and other compo ­
ne nts in front of the a ir intake impairs
the cooling eff ect of the coolant. This in­
creases the risk of the engine over heat ­
ing dur ing high outs ide temper atures
and heavy eng ine load .
- The front spoiler also he lps to distr ibute
cooling air correct ly wh ile driving.
If the
spoiler is damaged, the coo ling effect
wi ll be impai red and the risk of the en­
gine overheating will increase. See an au­
thorized Audi dealer o r authorized Aud i
Service Facility for ass istance.

16 Instruments and indicator lamps
or
·~
Lt
CD
TPMS
;
or
or
or Hill ho
ld*
Q page 22
Tire pressure monitoring system
,/
Qpage 258
Tire pressure monitoring system
Q page 258
Adaptive dampers*
Qpage25
Engine control (gasoline eng ine)
,/
Q page 22
Exhaust control system ,/
Qpage 23
Engine speed limitation
Qpage 23
Engine oil level (min.)
Qpage 23
~ -SE NSOR
or
or
or
or
or Engine
oil sensor
Qpage23
Engine temperature
Qpage 19
Battery charge level
Qpage20
Tank system
Qpage23
Washer fluid level
Qpage24
Windshield wipers
Qpage24
Steer ing,// s teer ing lock
Qpage 192
Steering lock
Q page21

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Driving through water
on roads
Note the following to avoid vehicle damage
when driving through water, for example on
flooded roads:
- The water must not be any higher than the bottom of the vehicle body.
- Do not drive faster than wa lking speed.
A WARNING
After driving through water or mud, the
braking effect can be reduced due to mois­
ture on the brake discs and brake pads. A
few careful brake applications should dry off the brakes.
([) Note
Vehicle components such as the engine,
transmission, suspension or electrical sys­
tem can be severely damaged by driving
through water.
- Determ ine the depth before driving
through water.
- Do not stop the vehicle, drive in reverse
or switch the engine off when driving
through water .
- Keep in mind that oncoming vehicles may create waves that raise the water
level and make it too deep for your vehi­
cle to drive through safely.
- Avoid dr iving through salt water (corro­
s ion).
Catalytic converter
App lies to vehicles: with gasoline engine
It is very important that your emission con­
trol system (catalytic converter) is function­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
.,. Always use lead-free gaso line¢ page 210,
Fuel supply .
.,. Never run the tank down all the way to emp-
ty .
Dri ving and the en vironm ent 197
.,. Never put too much motor oi l in your engine
¢ page 218, Adding engine oil 't:::r..
.,. Never try to push- or tow -start your vehicle.
T he catalytic converter is an efficient "clean ­
up" device bui lt into the exhaust system of
the vehicle . The cata lytic converter burns
many of the pollutants in the exhaust gas be­
fore they are released into the atmosphere .
The exclusive use of unleaded fuel is critically important for the life of the catalytic convert­
er and proper functioning of the engine.
A WARNING
The temperature of the exhaust system is h igh, both when driv ing and after stopping
the eng ine.
- Never touch the exhaust tail pipes once
they have become hot. This could result
in burns.
- Do not park or operate the vehicle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fue l spill or other material wh ich can
cause a fire.
- Do not apply additional undercoating or
rustp roofing o n or nea r the exhaust
manifold, exhaust pipes, catalyti c con­
verter or heat shields . Dur ing driving, the
substance used for undercoating could
overheat and cause a fire.
([) Note
-Be aware that just one tank filling with
leaded fuel w ill already ser iously de ­
grade the performance of the catalytic
converter .
- Do not exceed the cor rect engine oil level
~page 218.
-Do not drive until the fue l tank becomes
completely empty . The engine cou ld mis ­
fire . Unburned fuel could also get into
the exhaust system and th is cou ld cause
the catalytic converter to overheat.
- Do not switch off the ignition while the
vehicle is moving.
- Do not continue to operate your vehicle
under these conditions, as otherwise fuel ..,_ •
•
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Engine oil
Engine oil specifications
The engine oil used must conform to exact
specifications .
The service interval display in the instrument
cluster of your vehicle w ill inform you when it
is t ime for an oil change. We recommend that
you have your o il changed by an author ized
Aud i Service Advisor .
If you have to top off the oil between oil
changes, use the Aud i oil quality standard
specified in the table .
Audi oil quality standard
G asoline
VW 502 00 or
e ngin e vw 504 00
Using the proper engine o il is important for
the functionality and service life of the en­
g ine . Your engine was factory-filled with a
hi gh-quality oil which can usua lly be used
throughout the enti re yea r.
(D Note
Your Limited New Vehicle Warranty does
not cover damage or ma lfun ctions due to
fa ilure to fo llow recommended ma in te­
nance and use requ irements as set forth in
the Audi Owner's Manua l and Warranty
&
Maintenance book let.
- U se only a high q uality eng ine oi l that ex ­
pressly comp lies with the Audi oil quality
standard specified for your vehicle's en­
gine. Using any other oil can cause seri­
ous engine damage.
- Do not mix any l ubricants or other addi­
tives into the eng ine oi l. Doing so can
cause eng ine damage.
(D Tips
I f you need to add oi l and there is none
availab le that meets the Audi oil quality
standard your engine requires, you may
add a total of no more than 0.5 quart/liter
of a high-quality "synthetic"oil that meets
t he follow ing specifica tions.
Checking and Fillin g 217
-Veh icles with gasoline engine : ACEA A3
or AP! SM with a viscosity grade of
SAE O W-30, SAE 5W -30 or SAE SW-40 .
- For more information about engine o il
that has been approved for yo ur vehicle,
please contact either your authorized
Audi dealer or Aud i Customer Relations
at 1 (800) 822-2834 or visit our web site
at www .audiusa.com or
www.a udicanada.ca.
Engine oil consumption
The engine in your vehicle depends on an ade­
quate amount of oil to lubricate and cool all
of its moving parts .
In order to provide effective lubrication and
cooling of interna l eng ine components, all in ­
te rnal combust io n engines consume a certa in
amount of oil. Oil consumpt ion va rie s from
engine to engine and may change sign ifi can tly
ove r th e life of the engine. Typically, engines
wi th a spec ified break -in pe riod (see
¢ page 196) consume more oil during the
break-in pe riod than they cons ume after oi l
consumption has stabilized.
U nder normal cond itions, the rate o f oi l con ­
s u mption depen ds on the q ual ity and viscos ity
of the oil, the RPM (revolutions per minute) at
which the engine is operated, the ambient
temperature and road conditions. Further fac­
tors are the amount of oil dilut ion from water
condensa tion or fuel residue a nd the oxida­
tion level of the oil. As any engine is subject to
wea r as m ileage builds up, the oil consump­
t ion may incre ase over time until replacement
of wo rn components may be come necessary.
With a ll these va riab les coming into p lay, no
standard rate of oil consumpt io n can be es ­
tabl is h ed or spec ified. There is no alte rn ative
to regul ar and frequent che cking of the o il lev ­
el , see
Note.
If the yellow engine o il leve l warning sy mbo l
Ill in the ins trument cl uste r lights up, you
sho uld check the oil leve l as soon as possib le
¢ page 2 18 . Top off the oil at your earliest
convenience
¢ page 218 . ll-
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220 Check ing and F illin g
Never mix oil additives with your engine
oil. These additives can damage your en­
gine and adversely affect your Audi Limit­
ed New Vehicle Warranty.
@) For the sake of the environment
- Before changing your oi l, f irst make sure
you know where you can properly dispose of the used o il.
- Always dispose of used engine oil proper­
l y. Do not dump it on garden so il, wood­
ed areas, into open streams or down
sewage dra ins.
- Recycle used engine oil by taking it to a
used engine oil collection facility in your
area, or contact a service station .
Cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro­ tects the engine from freezing in the winter.
The cooling system is sea led and generally re­
q ui res little attention .
The cooling system has been filled at the fac­
tory with a pe rmanent coolant which does not
need to be changed. The coolant consists of a
mixture o f spec ia lly condi tioned water and the
manufacturer's glycol -based coolant addi -
tive G l3 antifreeze with anticorrosion addi­
tives (50% for USA models ; 60% for Canadian
models). This mixture both assures the neces­
sary frost pro tection and protec ts metal com­
ponents in the engine's cooling system from
corrosion and scaling . It also raises the boil­
i ng po int of the coo lant .
Do not red uce the concentr ation of the coo l­
ant in the summer by adding plain water.
The
proportion of coolant add iti ve mu st be at
least 50 % but not more than 60 %
to main­
tain antifreeze protection and cooling efficie n­
cy.
If t he coolant frost protect io n is too low,
the coo lant cou ld freeze and damage the veh i­
cle heating and engine cooling system. F
or year -ro und driving, antifreeze is added a t
the factory for temperatures down to :
- -31°F(-35°C)USA
- -40°F ( -40°C) Canada.
If you must add coolant, use a mixture of wa­
ter and coolant additive . Mix ing the coo lant
additive with distilled water is recommended .
.&, WARNING "---
Before you c hec k anyth ing in the engine
compartment, a lways read and heed a ll
WAR NIN GS ~
page 214.
0 Note
- Before wi nter sets in, have the coo lant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­
ma te conditions. This is especi ally impo r­
tan t if you live in a reg ion where the win­
ter is extreme ly cold . If necessary, in­
crease the p roportion of coo lant add itive
to 60% .
- Whe n adding coolant additive to yo ur
cooling system, remembe r:
- We recommend us ing on ly coola nt ad­
d itive Gl2++ or Gl3 (check the labe l)
fo r your vehicle. This coolant additive is
a va ila ble at au thorize d Au di dea le rs.
Other types of antifreeze can sign ifi­
ca ntly reduce corrosion p rotection. The
resu lting corrosion can cause a loss of
coolant and serious engine damage.
- Do not add any type of radiator leak seal­
ant to yo ur vehicle's engine coolant .
Add ing radiator repair f luid may adverse­
ly affect the function and performance of
your cooling system and cou ld resu lt in
damage not covered by you r New Ve hicle
Limited Warranty.

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"' rl
"' rl
Adding coolant
Fig. 168 Eng ine co mpa rtme nt: m ark in gs on the cool­
ant expansio n tank
Read and following th e WARNING S before
checking anythi ng in the eng ine compartmen t
c::>page 214.
Checking th e engine coolant leve l
"'Park your vehicle on a level surface .
"' Switch the ign ition off.
"' Read the coo lant level on the coolant expan­
s ion tank
c::> fig. 168. The coolant level must
be between the markings whe n the eng ine
in cold. When the eng ine is warm it can be
slight ly above the upper marking .
Adding coolant
Requirement: There must be a residua l
amo unt of coolant in the expansion tank
c::> (D .
"'Let the engine coo l down .
"' Place a cloth over the coolant expa nsion
tank cap and unscrew the cap counter clock­
wise <=:>
A.
"'Add coolant mixed in the correct ratio
c::>page 220 up to the upper marking.
"' Make sure that the fluid level remains sta-
ble. Add more coolant if necessary.
"' Clove the cap securely.
A coolant loss suggests a leak. Immediately drive your vehicle to an authorized repair fa­
cility and have the cooling system inspected.
If the cooling system is not leaking, a loss can
come from the coolant boiling through over ­
heat ing and being pushed out of the cooling
system.
Che cking and Fillin g 221
A WARNING
The cooling system is pressurized and can
become very hot. To reduce the r isk of
burns from hot coolant:
- Do not open the coolant expansion tank
cap with the engine hot . The re is a risk of
burns .
- Stop the engine and allow it to cool.
- Protect your face, hands and arms from
escaping coolant and steam by covering
the coolant tank cap with a large, th ick
cloth .
- Tu rn the coolant tank cap counterclock­
wise slowly and keep light pressure on
the cap.
- To reduce the risk of burns, do not allow
any antifreeze o r coolant to drip onto the
exhaust system or hot engin e compo­
nents . The ethy lene g lycol in eng ine
coo lant can catch fire under certai n cir­
cumstances.
- The coolan t addi tive and the coolant can
be dangerous to your health. For this
reason, keep the coo lant in the origina l
container away from ch ildren. There is a
risk of poisoning.
- When working in the engine compart­
ment, remember that the radiator fan
can switch on even if the ignition is
sw itched off, which increases the risk of
personal injury.
(D Note
Do not add coolant if the expans ion tank is
empty. Air could enter the cooling system
and damage the eng ine. If this is the case,
do not continue dr iving. See an author ized
Audi dealer or authorized Audi Service Fa ­
c ility for ass istance.
Radiator fan
The radiator fan switches on automatically by
itself.
An auxiliary electric radiator fan switches on
and off depending on coolant temperature
and other vehicle operat ing condit ions .
IJJ,

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
N
N
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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.

2 70 Fuses and bulbs
Interior fuse assignment
No. Equipment Ampere
Fl 3 Adaptive dampers contro
l
20
module
Fl4 Climate
control system
30
blower
Fl S E
lectronic steering column
10
lock
Fl6 MM I area 7.5
Fl7 Instrument cluster 5
Fl8 Rearview camera
7.5
F l9 Convince key
system control
7.5
module, tank system
F20 Tank system
7.5
F23 E
xterior lighti ng, heated
40
washe r fl ui d nozzles
Panorama sunroof/ power
F24 top control module, power 20/30
Fig. 192 Vehicle inter ior : fuse assignment top latch (Cabriolet)
No. Equipment Ampere
F25 Door/dr
iver's side doors (for
30
example power windows)
Fl Engine components 30 F26 Seat heat
ing 30
F2 Seat adjustment 10 F27
Sound-amplif
ier
30
F3 Hydraulic pump
cover (Cab-
40
riolet) F28
Power top control module,
5
elect ro ni cs (Cabr io let)
F4 M
M co ntrols, M MI-compo-
7.5
nents F29
Inte
rior lights
7.5
F3 1 E xterior lighting
40
F5 Gateway
5
F32 Driver ass istance systems 7.5
F 6 Anti-theft a
larm system
s F33 Airbag 5
Climate/heating control, se-
Button illumination, coils
lector lever (automatic
for upper cab in heating relay
F7 transmission), park ing heat- 10
er, rear window heater re lay F34 (Cabriolet) and socket relay,
7.5
in ter ior sound, back-up light
coil switch, temperature sensor,
Diagnosis, electrical parking oil level sensor
F 8 brake
switch, light switch,
10
rain/ light sensor, interior
light ing Diagnosis, headlight range
F35 co
ntrol system, a ir quality
10
sensor, a utomat ic dimming
F9 Steering column
switch
1
module
Fl0 D isp lay 5 rearview mir
ror
F36 Right
corner ing light/ right
15
LED-headlight
Fll Reversible driver's
side safe-
25
ty belt tensioners F37
Left corner
ing light/ left
15
L E D- headlight
Fl 2 M MI area 15/20