2016 AUDI A3 radiator

Driving
Otherwise, there is the r isk that the vehicle
could roll.
- After the engine has been switche d off, the
radiator fan can continue to run for up to 10
minutes - even with the ign ition switched
off . It ca n also switch on again after some
t i me if the coolant tern perature rises as the
resul t of heat buildup or if the engine co m­
partment is heat ed by the su n's rays and the
eng ine is ho t.
(D Note
- If t he engine has been unde r heavy load for
an extended pe riod of time, heat builds up
i n the eng ine compartment after the eng in e
i s sw itche d off- the re is a risk of dam ag ing
the engi ne . Fo r thi s reaso n, let the e ng ine
run for at id le for approxim ately two mi ­
nutes befo re sh utting it off .
Starting and stopping
the engine (vehicles with
a convenience key)
Engine with the
button Starting
App lies to vehicles: w ith conve nien ce key
The I START ENGINE STOP I button switches the
igni tion on and s tar ts the engine.
F ig . 78 Cente r conso le : STAR T ENGIN E ST OP butto n (w ith
co nve nience key)
You can start yo ur car w ithout using your conven­
ience key . You must simp ly be c arrying the key
with you .
Plug-in hybrid drive* : refer to the informatio n for
starting the vehicle under ¢
page 100.
82
Switching the ignition on /off or preheating
If thP 'Tij ind icator lig ht blinks and the mess age
Plea se move steerin g wheel appears when
switching the ignition on, the stee ring is locked
by the steer ing lock . In th is case, turn the steer­
i ng wheel slightly to the left/right.
.,. To switch the ignit ion on or off, press t he
I STAR T ENGINE STOPI button . Do not press the
brake pedal while doing this .
The need le in the t achome ter moves to
READY
whe n the ignition switches on an d moves to OFF
when the ignition switches off .
D iesel ve hicles are p rehea te d while the ig nition is
switched on
Iii .
Starting the engine
Your vehicle is equipped with la unch control. The
engine starts a utomat ica lly when you press the
I START E N GIN E STOP ! button br iefly.
.,. Press the brake pedal and move the selector
lever to the P or N position .
.,. Press the
I START E NGINE STOP ! button briefly .
T he engine w ill sta rt.
Major elect rical equipment sw itches off tempora­
rily whe n starting the eng ine .
It is possible that there will be a s light de lay
when starting the engine in d iesel veh icles in
colder temperatures . Therefore, you must hold
the b rake pedal down until the eng ine starts . Th e
i ndica to r light turns on wh ile the engi ne is pre­
hea ting
Iii .
The preheating t ime depends o n the coolant
temperat ure and outside temperature . The glow
pl ug indica to r li ght
II will only tu rn on for ap­
prox im ately 1 se co nd when the engi ne is warm o r
t h e ou ts ide temperat ure is higher th an 8
°C. Tha t
me ans you can s tart t he engine
immedia tely .
If th e engine does not start immediately, stop
th e starti ng p ro cedure by pushi ng the
I S TAR T EN GINE ST OP ! button ag ain an d repe at
a ft er 30 seconds. ..,.

Driving
_& WARNING
- Never turn off the engine before the vehicle
has come to a complete stop. The full func­
tion of the brake booster and the power
steering is not guaranteed. You must use
more force to turn or brake if. Because you
cannot steer and brake as you usually
would, this could lead to accidents and seri­
ous injuries.
- Please note that the brake booster and pow­
er steering only work when the engine is
running. When the engine off, you must use
more force to steer or brake the vehicle. Be­
cause the usual steering and brak.ing capa­
bility is not available, the risk of accidents or
injuries increases .
- Always take the vehicle key with you when
leaving the vehicle, even for a short period
of time. This applies particularly when chil­
dren remain in the vehicle . Otherwise the
children could start the engine or operate
electrical equipment such as power win­
dows.
- For safety reasons, always park the vehicle
with the selector lever in the P position.
Otherwise, there is the risk that the vehicle
could roll.
- After the engine has been switched off, the
radiator fan can continue to run for up to 10
minutes -even with the ignition switched
off. It can also switch on again after some
time if the coolant temperature rises as the result of heat buildup or if the engine com­
partment is heated by the sun's rays and the
engine is hot.
(D Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the engine is
switched off- there is a risk of damaging the
engine. For this reason, let the engine run for
at idle for approximately two minutes before
shutting it off.
84
Starting the engine if there is a
malfunction
Applies to vehicles: with convenience key
It may not be possible to start the engine under
certain circumstances, for example if the battery
in the vehicle key is drained, if interference is af­
fected the key or if there is a system malfunc­
tion.
Fig. 79 Steering column/remote control key: starting the
e ngin e if there is a malfunct ion
As long as the message y>>) Key not recognized.
See owner's manual
appears, you can start your
vehicle using the emergency start function.
.,. Press the brake pedal¢ ,&.
in Engine with the
button
START ENGINE S TOP Starting on
page 83.
.,. Press the ~1s=T-A~R~T~E-N~G=r-N~E~S~T~O~P~ I button.
.,. Hold the master key in the location indicated as
shown in the illustration
t>>) ¢ fig. 79. The en­
gine will start.
.,. If the engine does not automatically start,
press the
I START ENGINE STOPI button again .
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected .
@ Tips
You can display the message that appears
during an emergency by pressing the
I START ENGINE STOPI* button.
Messages
Turn off ignition before leaving car. Battery is
discharging .,.

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-Never transport the Audi e-tron charging
system or the special charg ing cab le* unse ­
cured.
- Store the Audi e-tron charging system or
the spec ial charging cable* in the storage
bag in the luggage compartment.
- Always transport the storage bag in the lug­
gage compartment and never in the passen­ ger compartment (for example the seats or
in front of them).
Charging overview
App lies to vehicles: with plug-in hybrid drive
Fig. 106 Charging system: control un it
Fig. 107 Radiator grille: ve hicle charging port a nd button
modu le
The charg ing unit is located behind the Audi r ings
on the front of the vehicle .
@
~ button/LED
® Display field
© Arrow buttons
@ !OK ! button
(D Charging timer button
@ Status LED
@ Immed iate charging button
e-tron
T he meaning of the different status displays for
the charging system and the vehicle can be found
u nder ¢ page 118, Status displays.
_& WARNING
-
There is an error in the control unit if the LED
@ is red . Disconnect the control unit from the
power supply. Refer to th is chapter
¢ page 118, Status displays.
@ Tips
- The device runs a self-test after power has
been restored to the control unit.
- You can activate a PIN for the control unit qpage 120.
- The vehicle cannot be started if a charging connector is connected.
Before charging
Applies to vehicles: with pl ug-in hybrid drive
Fig. 108 Radiator grille: open ing the c harging uni t cover
Fig. 10 9 Radiator grille: charging port cap
.. Unlock the vehicle if necessa ry¢ page 35.
.. Make sure that the selector lever is in the P po­
sition and drive ready mode is switched off
qpage 100.
"' Turn the lock until it is vertical to open the cov -
er on the charging un it qfig. 108. ..,.
115

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General information
Applies to vehicles: with rear pa rk in g systems/pa rk in g system
p lus/rearv iew camera
Depending on your vehicle's equipment, various
parking aids will help you when parking and ma­
neuvering.
The
rear parking system is an audible parking aid
that warns you of obstacles
behind the vehicle
¢page 152.
The parking system plus assists you when park ­
ing by audibly and visually indicating objects de­
tected
in front of and behind the vehicle
¢ page 152.
The rearview camera shows the area behind the
vehicle in the MMI display . This display assists
you when you are cross or parallel parking. The
parking system plus functions are also available
¢ page 153.
A WARNING ,--
- Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The parking system cannot replace
the driver's attention. The driver is always
responsible when entering or leaving a park­
ing space and during similar maneuvers.
- Please note that some surfaces, such as
clothing, are not detected by the system .
- Sensors and cameras have blind spots in
which people and objects cannot be detect­
ed . Be especially cautious of small children
and animals .
- Always pay attention to the area around the
vehicle -using the rearview mirror, too .
- The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody . The park ­
ing system may become impaired as a re­
sult. Have an authorized Audi dealer or au­
thorized Audi Service Facility check their
function.
- Make sure the sensors are not obstructed by
stickers, deposits or other materials. If they
are the sensor function could be impaired .
I
Parking systems
For additional information on cleaning, re­
fer to¢
page 274.
@ Note
-Some objects are not detected or displayed
by the system under certain circumstances:
- Objects such as barrier chains, trailer draw
bars, vertical poles or fences
- Objects above the sensors such as wall ex­
tensions
- Objects with specific surfaces or struc­
tures such as chain link fences or powder
snow
- If you continue driving closer to a low-lying
object, it may disappear from the sensor
range . Note that you will no longer be
warned about this obstacle.
- The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody . The
parking system may become impaired as a
result . Have an authorized Audi dealer or
authorized Audi Service Facility check their
function.
(D Tips
- The system may provide a warning even
though there are no obstacles in the cover­
age area in some situations, such as:
- certain road surfaces or for long grass .
- external ultrasonic sources e.g. from
cleaning vehicles.
- heavy rain, snow, or thick vehicle exhaust .
- We recommend that you practice parking in
a traffic-free location or parking lot to be­
come familiar with the system. When doing
this, there should be good light and weath­
er conditions .
- You can change the volume and pitch of the
signals as well as the display¢
page 157.
-What appears in the MMI display is some­
what time-delayed.
- The sensors must be kept clean and free of
snow and ice for the park assist to operate .
151

Checking and Filling
CJ) Note
-Only use Ad Blue that conforms to the
standard ISO 22241-1. Do not mix any addi­
tives with the AdBlue and do not dilute it
with water.
- Only use refill bottles that are approved for your vehicle. Using other systems can cause Ad Blue to leak.
- Do not add Ad Blue to the diesel tank or add diesel fuel to the Ad Blue tank. Do not start
the engine under any circumstances if the
wrong fuel is filled in the tank . There is a
risk of damaging the fuel tank system and
the engine . See an authorized Audi dealer or
authorized Audi Service Facility for assis­
tance.
- AdBlue attacks surfaces such as painted ve­
hicle components, plastic and carpet. Re­
move the fluid as quickly as possible with a
damp cloth and plenty of cold water. If the
Ad Blue has already crystallized, use warm
water and a sponge. AdBlue residue that is
not removed will crystallize and can damage
the affected surface .
- Do not store the refill bottle in the vehicle.
If it leaks, the escaping Ad Blue could dam­
age the vehicle interior .
- Do not allow Ad Blue to come into contact
with clothing. If there is contact with the
fluid, flush immediately with plenty of wa ­
ter .
(D Tips
-You can obtain refill bottles from an author­
ized Audi dealer or authorized Audi Service
Facility .
- Follow the Ad Blue manufacturer's instruc­
tions for use and storage .
- A permitted refill bottle contains approxi­
mately 1.9 liters of AdBlue .
- Ad Blue can freeze at very low temperatures.
If this happens, the system will not detect
that the Ad Blue was refilled and it will con­
tinue to inform you of the low AdBlue level.
The message turns off as soon as the tank
thaws out again.
236
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment such as
checking and filling fluids, there is a risk of in­
jury, scalding, accidents, and burns. For this
reason, follow all the following listed warnings
and general safety precautions. The engine
compartment is a dangerous area.
¢ .&. .
.8, WARNING
To reduce the risk of injuries, complete the
following steps before opening the hood:
- Turn the engine off.
- Switch the ignition off.
- Set the parking brake.
- Place the selector lever in the P position.
- Let the engine cool down.
- Never open the hood when you see that
steam or coolant drips from the engine
compartment- there is a danger of burns!
Wait until no steam or coolant flows out.
- Keep children away from the engine com­
partment.
- Never spill fluids on a hot engine. These flu­
ids (such as the freeze protection contained in the coolant) can catch fire.
- Avoid short circuits in the electrical system,
especially the battery.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of personal injury.
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
cooling system is under pressure.
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
large cloth when opening.
- Do not remove the engine cover under any
circumstances . This increases the risk of
burns.
- If tests need to be performed with the en-
-
gine running, there is additional danger due ~

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to moving components (such as the ribbed belt, alternator and radiator fan) and from
the high-voltage ignition system.
- Never reach into the radiator fan. The elec­
tric auxiliary fan is controlled by tempera­
ture and can switch on suddenly.
- Pay attention to the following warnings list­ ed when work on the fuel system or on the
electrical equipment is required.
- Always d isconnect the vehicle battery
from the vehicle electrical system
- Do not smoke
- Never work near open flames
- Always have a working fire extinguisher nearby
- To reduce the risk of electric shock and in­
jury, never touch the following components when the eng ine is running or is being start­
ed:
- Ignition cable
- Other components in the electronic h igh -
voltage ignition system
- If you must check or perform work on the engine while it is running:
- Set the parking brake and place the selec­
tor lever in the P (park) position first .
- Always proceed with extreme caution so
that clothing, jewelry or long ha ir do not
become caught in the radiator fan, fan
be lt or other moving components or do
not come into contact with hot compo­
nents. Tie back long hair before beginning
work and do not wear cloth ing that can
hang down into the engine.
- L imit your exposure to exhaust and chemi­
cals to as short a time as possible~&.
_& WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain or
em it chem icals 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
C hecki ng an d Fill in g
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.
(D Note
When filling fluids, be sure not to mix the f lu­
i ds up. Otherwise severe malfunctions and en­
gine damage will occur.
@ For the sa ke of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If there are visible spots from oil or other fluids, bring your veh icle to an authorized Audi deal­
er or authorized Aud i Serv ice Facility to be
checked.
Opening the hood
The hood is released from the interior .
Fig. 191 Sectio n from t he driver 's side footwell: release
lever
Fig. 192 Rocker switch under the hood
237

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corrosion can cause a loss of coolant and
serious engine damage .
- Do not add any type of radiator leak sealant
to your vehicle's engine coolant . Adding ra­
diator repair fluid may adversely affect the
function and performance of your cooling
system and could result in damage not cov­
ered by your New Vehicle Limited Warranty.
Adding coolant
F ig . 198 Engine compa rtment: mark in gs on t he coo lant
expa nsion tank
Read and follow the WARNINGS before check­
ing anything in the engine compartment
¢ page 236, Working in the engine compart­
ment.
Checking the engine coolant level
• Park your vehicle on a level surface .
• Switch the ignition off .
• Read the coolant level on the coolant expansion
tank
¢ fig. 198 . The coolant level must be be­
tween the markings when the engine in cold .
When the engine is warm it can be slightly above the upper marking.
Adding coolant
Plug-in hybrid drive*: your vehicle has two cool­
ant expansion tanks that are separate from each
other. The smaller of the two expansion tanks
must not be opened
¢ page 108. Read and fol­
low the important safety precautions ¢
A in
Coolant on page 109.
Requirement: there must be a residual amount of
coolant in the expansion tank ¢(D .
• Let the engine cool down .
Checking and Filling
• Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockwise
¢ A .
• Add coolant mixed in the correct ratio
¢
page 244 up to the upper marking.
• Make sure that the fluid level remains stable.
Add more coolant if necessary.
• Close the cap securely .
A coolant loss suggests a leak. Immediately drive
your vehicle to an authorized Audi dealer or au ­
thorized Audi Service Facility and have the cool­
i ng system inspected. If the cooling system is not
leak ing, a loss can come from the coolant boiling
through overheat ing and being pushed out of the
cooling system .
,&_ WARNING
-= -The cooling system is pressurized and can be­
come very hot. To reduce the risk of burns
from hot coolant:
- Do not open the coolant expansion tank cap
with the engine hot. There is a risk of burns.
- Stop the engine and allow it to cool.
- Protect your face, hands and arms from es-
caping coolant and steam by covering the
coo lant tank cap with a large, thick cloth.
- Turn the coolant tank cap counterclockwise
slowly and keep light pressure on the cap.
- To reduce the risk of burns, do not allow any
antifreeze or coolant to drip onto the ex ­
haust system or hot engine components.
The ethylene glycol in engine coo lant can
catch fire under certain circumstances .
- The coolant additive and the coolant can be
dangerous to your health . For th is reason,
keep the coolant in the original container
away from children. There is a risk of poi­
soning .
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, wh ich
increases the risk of persona l injury.
(J) 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 ..,_
245

Checking and Filling
cont inue driving. See an authorized Audi deal ­
er or authorized Audi Service Facility for assis­
tance .
Radiator fan
The radiator fan switches on outomotico/ly by it­
self.
An auxiliary elect ric radiator fan sw itches on and
off depend ing on coolant temperature and other
vehicle operating conditions.
After you switch the engine off, the auxiliary fa n
can cont inue runn ing fo r up to 10 minutes -even
with the ignition off . It ca n even switch on again
later by itself¢.&. , if
- the temperature of the engine coolant r ises due
to the heat bu ild -up from the engine in the e n­
gine compartment, or
- the engine compartment heats up because the
vehicle is parked in intense sunlight .
A WARNING
-To reduce the risk of pe rsonal injury never
touch the radiator fan .
- The auxiliary electric fan is temperature
controlled and can switch on suddenly even
when the eng ine is not running.
- The auxiliary radiator fan switches on auto­
matically when the engine coo lant reaches a
certain tempe rature and w ill cont inue to run
until the coolant temperature drops.
Brake fluid
Checking brake fluid level
F ig . 19 9 Engine co mpar tment: cove r o n t he b rake fluid
r e servo ir (example)
246
-
Before yo u check any thing in the engine compart ­
ment,
always read and heed all WARNINGS
¢ page 236, Working in the engine comport­
ment .
.,. Read the brake fluid level from the brake f luid
reservoir ¢
fig. 199, ¢ page 239, fig. 193 (ga­
soil engine) or ¢
page 240, fig. 194 (diesel en­
gine). The brake fluid level must be between
the "MIN" and "MAX" markings .
The location of the brake fl u id reservoir can be
seen in the engine compartment i llustration
q page239.
The fluid level may drop slightly after some time
due to t he automatic adjustment of the brake
pads. This is not ca use for a larm.
If t he brake fluid level falls considerably below
the "M IN" mark, the brake warning/indicator
li ght ~ (U.S. models)
I. (Canadian models)
will come on
q page 18 . Do not continue to oper­
ate the vehicle . The complete brake system
shou ld be thorough ly checked by an authorized
Audi dealer or other qualified fac ility and the
cause corrected .
If the brake fl uid level is too
l ow, the bra ke war ning/ indicato r light w ill illumi­
na te. Cont act an a uthor ized Audi dealer
immedi­
atel y.
Changing brake fluid
Have the brake fluid changed by an experienced
technician.
B rake fl uid abso rbs moistu re from the air. If the
wa ter con ten t in the brake fluid is too high, cor­
r osion in the bra ke system may res ult after ape­
riod of time. The boi ling po int of the brake fluid
will a lso decrease considerably and decrease
bra king performance.
Therefore, the bra ke fluid m ust be changed
every
two year s. Always use new brake f luid which con­
forms to Federa l Motor Vehicle Standard " FMVSS
116 DO T 4" .
The brake fluid reservoir can be diffic ult to reac h,
the refore, we recommend that you have t he
brake fluid changed by your author ized
Audi
dealer .
Your dealer has the correct tools, the