2016 AUDI A3 brake sensor

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This message appears and a warning tone sounds if you open the driver's door when the ignition is
switched on. Switch the ign ition off so that the
battery will not d ischarge.
Pressing start/stop button again will switch off
engine!
This message appears when you press the
ISTART ENGINE STOPI* button while driving
¢ page 83, Emergency off function.
Engine start system malfunction. Please con­
tact Service
The engine automatic start system has a mal­
function . Drive to an author ized Audi dealer or
author ized Audi Service Facility immediate ly to
have the malf uncti on corrected. To start the en­
g ine, press and hold the
!START ENGINE STOPI
button.
DJ Key not recognized. See owner's manual
This message appears if there is no convenience
key inside the vehicle or if the system does not
recognize the key. The conven ience key may not
be recognized, for example, if it is covered by an
object that
disrupts the signal (such as a brief­
case), o r if the key battery is weak. Electronic de­
vices such as cell phones can also interfere with
the signal.
To still be able to start or stop the engine, refer
to "Cor rect ing a malfunction" ¢
page 84.
Ill Key not in vehicle?
The Ill indicator light turns on and this message
appears if the convenience key was removed from
the vehicle when the eng ine was running . If the
conven ience key is no longer in the vehicle, you
cannot switch the ignition on o r start the engine
once yo u stop it. In addition, you cannot lock the
ve hicl e from the outside .
Press brake pedal
This message appears if you do not press the
brake pedal when starting the eng ine .
Please engage N or P
This message appears when starting or s topping
the engine if the selector lever is not in the Nor P
position . The engine will not start/stop .
Driving
Shift to P, vehicle can roll away . Doors can only
be locked in P
T his message appears for safety reasons along
with a warning tone. It appears if the selec to r
lever for the automat ic transmission is not in the
P position when switching the ignition off with
the
I START ENGINE STOPI * button. Shift these­
lector lever to the P position. Otherwise, the vehi­
cle could roll. You also cannot lock the vehicle us­
ing the locking sensor o n the door hand le or us ­
ing the conven ience key.
Electromechanical
parking brake
Operating
The electromechanical parking brake replaces
the hand brake.
Fig . 80 Center console : pa rk ing brake
" Pull the switch @¢ fig. 80 to set the parking
brake. The - (USA models),. (Canada
models) ind icator lights in the button and in
the instrument cluster display turn on .
" To release the parking brake, press the brake or
accelerator pedal while the ign ition is switched
on and press the button @at the same time.
The - (USA models), . (Canada models)
ind icator lights in the button and in the display
turn off.
Your vehicle is equipped with an electromechani­
cal park ing brake. The parking brake is designed
to prevent the vehicle from rolling un intent io nal ­
ly and replaces the hand brake .
In addition to the normal functions of a tradi­
t ional hand brake, the electromec hanical parking ..,.
85

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General information
Appl ies to vehicles: with Audi adaptive cruise contro l an d Audi
p re se nse front
Fig. 116 Front o f ve hicle: sensor
The general information applies to adaptive
cruise control* and pre sense front*¢
page 139.
The radar sensor area¢ fig. 116 must not be cov­
ered with stickers, deposits or any other obstruc­
tions as it may impair the function of the adap­
tive cruise control and the pre sense front. For in­
formation on cleaning, refer to
c:> page 2 74. The
same applies for any modifications made in the
front area .
The function of the adaptive cruise control sys­ tem and pre sense front is limited in some condi­
tions :
- Objects can only be detected when they are
within the sensor range
¢ page 132, fig. 115.
- The system has a limited ability to detect ob­
jects that are a short distance ahead, off to the side of your vehicle or moving into your lane.
- Objects that are difficult to detect such as mo ­
torcycles, vehicles with high ground clearance
or an overhanging load are detected late or not detected at all.
- When driving through curves
c:> page 134.
-With stationary objects c!;> page 134.
A WARNING
Always pay attention to traffic when adaptive
cruise control is switched on and the pre
sense front is active
c:> page 139 . As the driv­
er, you are still responsible for starting and
for maintaining speed and distance to other objects. The pre sense front is used to assist
you. The driver must always take action to
Assist
avoid a collision. The driver is always responsi­ ble for braking at the correct time.
- Using adaptive cruise control incorrectly can
cause collisions, other accidents and serious
injuries.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather (such
as ice, fog, gravel, heavy rain and hydroplan­
ing) . Using the system under these condi­
tions could result in a collision.
- Switch adaptive cruise control off tempora­
rily when driving in turning lanes, on ex­
pressway exits or in construction zones. This
prevents the vehicle from accelerating to
the set speed when in these situations.
- The adaptive cruise control system will not
brake by itself if you put your foot on the ac­
celerator pedal. Doing so can override the
speed and distance regulation.
- When approaching stationary objects such
as stopped traffic, adaptive cruise control
will not respond and pre sense front will
have limited function.
- The adaptive cruise control system and pre
sense front do not react to people, animals,
objects crossing the road or oncoming ob­
jects.
- The function of the radar sensors can be af­
fected by reflective objects such as guard
rails, the entrance to a tunnel, heavy rain or
ice .
- Always maintain enough distance from
vehicles ahead so that you can still brake
your vehicle safely . The adaptive cruise con­
trol cannot safely slow your vehicle or brake it to a stop if you are driving too close be­
hind a vehicle. Please note that the auto­
matic braking function cannot brake sud­
denly or apply the brakes fully under these
conditions.
- To reduce the risk of unintended actions,
switch the ACC off when you a re not actively
using it.
~
133

Assist
(D Note
The sensor can be displaced by impacts or
damage to the bumper , whee l housing and
underbody. The adaptive cruise control and
pre sense front may become impaired as a re­
sult . Have an authorized Audi dealer or au­
thorized Audi Service Fac ility check their func­
tion .
In curves
Applies to veh icles: w ith Aud i adapt ive cru ise co ntro l and Audi
pre se nse front
Fig. 117 Example: driving into a curve
When driving into a curve ¢fig. 117 and out of a
curve, the adaptive cruise control may react to an
objec t in the neighboring lane and apply the
brakes. You can prevent that by pressing the ac­
celerator pedal briefly .
Stationary objects
App lies to veh icles: with Aud i adapt ive cruise co ntro l an d Audi
p re se nse front
Fig . 118 Examp le: object changing lanes and stat ionary
object
l) Speed limits de pend on t he country and th e s pee domet er.
134
Adaptive cruise control
The adaptive cruise control system only reac ts to
objects that are moving or that the system has
already detected as moving. For example, if a de­
tected vehicle @turns or changes lanes, the
adaptive cruise contro l will not react to a stopped
vehicle @. Press the brake pedal to slow your ve­
hicle down.
Pre sense front
Pre sense front only reacts to stationary objects
at low speeds.
Switching on/off
App lies to vehicles: wit h Audi adapt ive c ru ise control
Fig . 11 9 Operat ing lever: swi tching on and off
Fig. 120 Instrument cluster: adapt ive cruise contro l
You can set any speed l) between 20 mph and 95
mph (30 and 150 km/h).
Indicator lights and messages in the instrument
cluster display inform you about the current sit-
u ation and settings .
1JJ,-

Ass is t
- Always follow applicable traffic laws, use
common sense and select a distance to
vehicles ahead that takes the current traffic,
road and weather conditions into account .
(D Tips
Distan ce 3
is set automatically each time you
switch the ignition on. If you would like to set
another d istance as the standard setting, you
can have the
Ad apti ve cruis e control menu
added or enabled by an authorized Aud i dea l­
er or author ized Audi Se rvice Facility.
Setting the driving program
Applies to vehicles: with Audi adaptive cruise control
A adaptive cru ise cont rol d riving program is ad­
justable on veh icles w ithout A udi drive selec t*.
• In the MMI, se lect: the
I MENU I b utton > C ar >
Sy stem s*
cont rol button > Drive r assi stance >
Adaptiv e crui se c ontrol > Driving program >
Comfort /S tandard /Dynami c.
Selecting the driving mode
Applies to veh icles: with Audi adaptive cruise control
The adaptive cruise contro l dr iving program is ad ­
justable for vehicles with Audi drive select usi ng
the driving mode.
• Se lect the des ired dr iving mode
C o mfort , Auto ,
Dynamic
o r Indi vidual * with the knob
Qpoge 148 .
Request for driver intervention
Applies to vehicles: with Audi adaptive cruise control
Fig. 1 24 Ins trument cluster: request fo r drive r interven ­
tio n
138
In some situat ions, the braking from the adap­
tive cruise control system is not enough to main­
ta in enough distance to the object ahead. In
these situations, the system will request you to
take action.
The . indicator light and the graphic in the dis­
play will warn you abo ut the danger
Q fig . 124.
You w ill also hear an audio signal. Press the
brake pedal to slow your vehicle down.
Driver messages
App lies to vehicles: with Audi adaptive cruise control
ill ACC: unavailable
The system cannot guarantee that it will detect
objects correctly and is sw itched
off. The sensor
was moved or is faulty . Drive to an author ized
Audi dealer or authorized Audi Service Fac ility im ­
med iate ly to have the ma lfunction corrected .
ill ACC: currently una vailable. No sensor v is ion
IIJ ACC and Audi pre sen se: currently una vaila­
ble. No sensor vis ion
This message appears if the sensor v iew is ob ­
structed, for e xamp le by leaves, snow, heavy
spray or dirt. Clean the sensor
c:>page 133,
fig . 116 .
II ACC: currently unavailable . Gradient too
steep
The road exceeds the maxim um poss ible angle
fo r safe adaptive cruise control operat ion. The
adaptive cruise co ntro l canno t be switched on.
ill ACC: only a vailable in D, Sor M
Select the 0/5 or M selector lever position.
IIJ ACC: pa rking brake applied
The adaptive cru ise control system sw itches off
a utomat ica lly if the parking brake is set. The
adaptive c ruise cont ro l is available again after re­
l easing the parking brake .
II ACC: currently unavailable . Stabilization
control input
This message appears if the Electronic Stab iliza­
tion Con trol (ESC) is taking action to stab ilize the ..,.

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switches
off automatically .
ill ACC off: manual control!
This message appears if the veh icle rolls back
when sta rting on a slight incl ine, even though
ACC is act ive. Press the brake pedal to p revent
the veh icle from ro lling or starting to move.
ill ACC: engine speed
This message appears if the driver has not shift­
ed up or down in time when the adapt ive cruise
control is braking or accelerating, caus ing the ve­
h icle to exceed or to not reach the permitted en­
g ine speed . The adaptive cru ise cont rol turns
off.
A chime sounds as a remi nder.
•••
Three white dots appear if a sett ing cannot be se­
lected with the operating lever. For example, this
happens if adaptive cruise control cannot be acti­
vated when stopped because the dr iver has not
fastened the safety belt.
Doo r open
Adapt ive cruise control cannot be switched on
when the vehicle is stationary and the driver's
door is open.
Audi pre sense
Introduction
Applies to vehicles: with Audi pre sense basic or Audi pre sense front
With in the limits of the system, p re sense basic
and pre sense front can in it iate steps to protect
vehicle occupants in certain dangerous s itua­
tions .
Critical driving situat ions can be recogn ized by
the pre sense front via a network of different ve­ hi cle systems and can take steps to prepare the
ve hicl e o ccupants for a potential collis ion.
The pre sense front works w ith a radar sensor
and a video camera*. It also functions within the limits of the system when adaptive c ruise con­
tro l* is switched off .
Assist
General information
General information
Applies to vehicles: with Audi pre sense front or Audi adaptive
cruise control
_&. WARNING
Also fo llow the gene ral in format ion found on
~ page 133, General information.
Audi pre sense basic
Description
Applies to vehicles: with Audi pre sense basic
The function of the pre sense basic is activated at
a speed of 20 mph (30 km/h) or h igher .
The following functions can be triggered under certain condit ions w ith in the lim its of the sys­
tem:
- Tensioning of the safety belts (for examp le,
during heavy braking): the front safety belts have reversib le be lt tens ioners. If a collision
does not occur, the safety belts loosen slightly
and are ready to tr igger aga in.
- Closing the windows and the sunroof* (for ex­
ample when over- or understeering): the win­
dows close until the re is only a small gap open
and the s unroof* closes all the way .
Audi drive select: the deployment time is adapt­ ed in dynam ic mode.
_&. WARNING ~
The pre sense basic cannot overcome natural
physical laws. It is a system desig ned to ass ist
and it cannot p revent a collision. Do not let
the increa sed safe ty p rovided tempt you into
t aking r is ks. This co uld in crease yo ur risk of a
collis ion .
- The system can dep loy inco rre ctly due to
system-specif ic limits.
(D Tips
- Certa in p re sense basic functions switch off
when ESC is swi tched off (sport mode) or
w hen driving in reverse. .,.
139

,....,
N
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detect all objects. This increases the risk of
a collision.
- Pre sense front does not react to people or
animals or objects that are crossing the ve­
hicle's path or are difficult to detect
¢ page 133.
-Reflective objects such as guard rails or the
entrance to a tunnel, heavy rain and ice can
affect the function of the radar sensor and
the system's ability to detect a collision risk.
- Lack of attention can lead to collisions, oth­
er accidents and serious injuries. pre sense
front is an assistance system and cannot
prevent a collision by itself. The driver must
always intervene. The driver is always re­
sponsible for braking at the right time.
- Always pay attention to traffic, even when
pre sense front is switched on. Always be
ready to intervene and take over complete
control of the vehicle whenever it is neces­
sary. Always follow traffic laws regarding
maintaining a safe distance between your
vehicle and vehicles ahead.
- pre sense front works within certain limits
and cannot react to situations that are out­
side of the system limits, such as when ap­
proaching a stationary vehicle or a station­
ary obstacle (the end of a traffic jam or ave­
hicle that has broken down).
- Always keep in mind that the radar sensor
for pre sense front only works within de­
fined detection zones, which means other
vehicles may not always be detected cor­
rectly.
- The function and range of the radar sensor
can be impaired by rain, snow and heavy
mist. Vehicles ahead may not be detected
right away, or not detected at all.
- Reflective surfaces such as guard rails or en­
trances to tunnels may impair the function
of the radar sensor.
(D Note
The sensor can be disp laced by impacts or
damage to the bumper, wheel housing and
underbody. Pre sense front can be impaired
by this. Have an authorized Audi dea ler or au-
Assist
thorized Audi Service Facility check their func­
tion.
(D Tips
- You can cancel the bra king with increas ing
force that is initiated by the system by brak­
ing yourself, by acce lerating noticeably or
by swerving.
- For information on driver messages about
pre sense, refer to¢
page 142.
- Keep in mind that pre sense front can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to reduce
the risk of damage or injury.
- Certain pre sense front functions switch off
when ESC is switched off (sport mode) or
when driving in reverse.
- The pre sense front functions are not availa­
ble if there is a malfunction in the adaptive
cruise control* system¢
page 138 or
¢page 142.
-Keep in mind that pre sense front can brake
abruptly. Always secure cargo or objects
that you transport to reduce the risk of
damage or injury .
Settings in the Infotainment system
Applies to vehicles: with Audi pre sense front or Audi adaptive
cruise control
.,. In the MMI, select: the I MENU I button >Car>
Systems*
control button > Driver assistance >
Audi pre sense .
Switching the system on and off
Audi pre sense (Syste m): if the system is turned
off, it automatically turns on again once the igni­
tion is switched on.
System -switch Audi pre sense On/Off. With
this, you can switch the prewarning and the brak ­
ing intervention from Audi pre sense on or off.
Early warning -the distance and approach warn­
ings can be switched
On /Off .
(D Tips
-If you restrict or switch off the ESC, the pre
sense also switches itse lf off¢
page 160.
141

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-Only wash the vehicle when the ignition is
off and follow the instructions from the car
wash operator to reduce the risk of acci­
dents.
- To reduce the risk of cuts, protect yourself
from sharp metal components when wash­
ing the underbody or the inside of the wheel
housings.
-After washing the vehicle, the brak ing effect
may be delayed due to mo isture on the
brake rotors or ice in the w inter . The brakes
must be dried first w ith a few careful brake
applica tions .
{[) Note
-If you wash t he vehicle in an automatic car
wash, yo u m ust fold the e xterior m irrors i n
to reduce the risk of damage to the mi rrors.
Power folding exte rior m irrors* must o nly
b e fo lded in a nd out usin g the power folding
f u nct io n.
-
Ca re and cleaning
- To prevent pa int damage, do not wash the
vehicle in direct s un light .
- To re duce the risk of damage to the surface,
do not use insect removing sponges, kitche n
sponges o r similar items .
- Matte finish painted veh icle components:
- To reduce the r isk of damage to the sur-
face, do not use po lish ing agents or hard
wax.
- Never use protective wax. It can destroy
the matte finish effect .
- Do not place any stickers or magnetic
signs on vehicle parts painted with matte
finish paint . The paint cou ld be damaged
when the stickers or magne ts are re ­
moved.
@ For the sake of the environment
Only wash t he veh icle in facili ties s pec ially de­
s igned for that pu rpose . This will reduce the
r isk of dirty wate r contamina ted with o il from
ente ring the sewe r sys tem.
Cleaning and care information
W hen clea ning and ca ring for individua l vehicle
comp onents, refer to the following t ables. The
inf ormat ion cont ained there is s imp ly recom ­
mendations. For q uest ions or for components t
h at are not l isted, cons ult an autho riz ed Aud i
de aler or author ized A udi Se rvice Fa cility. Also
f o llow the information fo und in ~ .&. .
Ext erior cleaning
Component Situation Solution
Windshield wiper
D eposits ~ page 53, Cleaning windshield wiper blades
blades
Headlights /
Deposits So
ft spo nge with a m ild soap solutiona)
Tail lights
Sensors /
Deposits Sensors: soft cloth w ith solvent-free cleaning solution
camera lenses Camera lenses: soft cloth w ith alcohol-free cleaning solu-
tion
Snow/ice Hand br
ush/solven t-free de -icing spray
Wheels Road salt Water
Brake dust Acid-free special clean
ing so lution
Exhaust tail p ipes Road salt Water, clea ning so lu tion su itab le for s tainless stee l, if nee-
essary
Decorati ve parts / Deposits Mild soap so lution a>, a cleaning solution su itable for stain-
Trim less stee l, if necessary
275
...

Fuses and bulbs
-Some of the equipment listed in the follow­
ing tables applies only to certain mode l ver­
sions or certain optional equ ipment.
Interior fuse assignment
F ig. 226 Vehicle interior: fuse assignment
No. Equipment
Fl Engine components
F2 Seat adjustment
F3 Hydraulic pump
cover (Cabriolet)
F4 MMI control panel, MMI components
FS Gateway
F6 Selector lever (automatic transmiss
ion)
.... ~ N 0
> a) cc
F7 Climate/heating cont
rol, auxiliary heating,
rear window defogger relay
Diagnosis, electromechanical parking
brake switch, light switch , rain and light
F8 sensor, interior lighting commun ication
box (Plug-in hybrid drive*) ant i-theft alarm
system
F9 Steering column switch module
FlO Display
Fll Reversible driver's side safety belt tension-
ers
Fl2 MMI area
292
No.
Fl3
Fl4
FlS
Fl6
Fl7
Fl8
Fl9
F20
F23
F24
F25
F26
F27
F28
F29 F31
F32
F33
F34
F35
F36
F37
F38
F39
F40
F41
F42
Equipment
Adaptive dampers control module/ service plug (Plug-in hybrid dr ive")
Climate control system blower Electronic steering column lock
MMI area
Instrument cluster
Rearview camera
Convince key system control module, tank
system
Tank system Exterior lighting, heated washer fluid noz-
zles
Panorama sunroof/ power top control
module, power top latch (Cabriolet)
Door/dr iver's side doors (for example pow-
er windows)
Seat heating
Sound-amplifier
Power top control module, electro nics
(Cabriolet)
Interior lights
Exterior lighting
Driver assistance systems
A irbag
Button illumination, coils for upper cabin
heating relay (Cabriolet) and socket relay,
interior sound, reversing light switch, tern-
perature sensor
Function lighting, diagnosis, headlight
range control system, air quality sensor,
automat ic dimming rearv iew mirror
Right corneri ng light/ r ight LED-headlight
Left cornering light/ left LED-headlight
High-voltage battery (Plug- in hybrid
drive*)
Door/front passenger's side doors (for ex-
ample, power windows)
Sockets
Reversib le front passenger's side safety
belt tensioners
Central locking components, windshield
washer system