2016 AUDI A3 ECU

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General information
Your Audi was designed primarily for passenger
transportation .
If you plan to tow a trailer, please remember that
the additional load will affect durability, econo­
my and performance.
T railer towing not only places more stress on the
vehicle, it also calls for more concentration from
the driver.
For this reason, always follow the operating and
driving instructions provided and use common
sense.
Technical requirements
Trailer hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suitable
for your vehicle and trailer and must be mounted
securely on the vehicle's chassis at a technically
sound
location . Use only a trailer hitch with a re­
movable ball mount . Always check with the trail­
er hitch manufacturer to make sure that you are
using the correct hitch.
Do not use a bumper hitch.
The hitch must be installed in such a way that it
does not interfere with the impact -absorbing
bumper system . No modifications should be
made to the vehicle exhaust and brake systems .
From time to time, check that all hitch mounting
bo lts remain securely fastened.
When you are not towing a trailer,
remove the
tra iler hitch ball mount . This prevents the hitch
from causing damage should your vehicle be
struck from beh ind
~ ,&. .
Trailer brakes
If your trailer is equipped with a braking system,
check to be sure that it conforms to all regula­
tions .
Trailer mode
The trailer hydraulic brake system must not be
directly connected to the vehicle's hydraulic
brake system.
Safety chains
Always use safety chains between your vehicle
and the trailer.
Trailer lights
T ra iler lights must meet all regulations . Be sure
to check with your Aud i dea ler for correct wiring,
switches and relays .
Mirrors
If you are unable to see the traffic behind you us­
ing the regular outside mirrors, then you
must in­
stall extended mirrors . It is important that you
always have clear vision to the rear.
,8. WARNING
After removing the trailer hitch, do not store
it in your vehicle. In case of sudden braking,
the hitch could fly forward and injure you or
your passengers.
Operating instructions
Maximum trailer weight
A trailer for your vehicle is limited to a typical
class 1 or class 2 trailer.
Trailer load distribution Be sure the load in the trailer is held securely in
place to prevent it from shifting forward, back­
ward or sideways.
Never allow a passenger to ride in a trailer~.&.
in Driving instructions on page 128.
Engine cooling system
Towing a trailer makes the engine work harder. It
is important that the cooling system's perform ­
ance is up to the additional load. Make sure that
the cooling system has enough fluid.
Tire pressure
When towing a trailer, inflate the tires of your
vehicle to the cold tire pressure listed under "Full ..,.
127

,....,
N
0 > co ,...., -Please note that the sensor does not always
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.
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.. Make sure that all windows are clean and afford
good visibility to the outside .
.. Secure all luggage and other items carefully
r=> page 64, r=> page 63.
.. Make sure that nothing can interfere with the
pedals .
.. Adjust front seat, head restraint and mirrors
correctly for your height .
.,. Instruct passengers to adjust the head re­
straints accord ing to their height .
.. Make sure to use the right ch ild restraint cor­
rectly to protect children
r=> page 209, Child
safety .
.. Sit properly in your seat and make sure that
your passengers do the same
r=> page 58, Front
seats .
.. Fasten your safety belt and wear it properly . Al­
so instruct your passengers to fasten their safe­
ty belts properly
r=> page 176.
What impairs driving safety?
Safe driving is directly related to the condition of
the vehicle, the driver as well as the driver 's abili­
ty to concentrate on the road without being dis­
tracted.
The driver is responsible for the safety of the ve·
h ide and all of its occupants. If your ability to
drive is impaired, safety risks for everybody in the
veh icle increase and you also become a hazard to
everyone else on the road
r=> ,&. . Th erefo re :
.. Do not let yourself be distracted by passengers
or by using a cell ular telephone.
.. NEV ER drive when yo ur dr iv ing abili ty is im­
paired (by medications, alcohol, drugs, etc.).
.. Observe all traffic laws, rules of the road and
speed limits and plain common sense.
.. ALWAYS adjust your speed to road, traffic and
weather conditions.
.. Take frequent breaks on long trips. Do not drive
for more than two hours at a stretch.
.,. Do NOT drive when you are tired, under pres­
su re or when you are stressed.
Dr iving safety
A WARNING
-Impaired driving safety increases the risk of
serious personal injury and death whenever a
vehicle is being used .
Correct passenger
seating pos itions
Proper seating position for the driver
The proper driver seating position is important
for safe, relaxed driving.
Fig. 148 Correct seating pos ition
For your own safety and to reduce the risk of in·
jury in the event of an accident, we recommend
that you adjust the dr iver's seat to the follow ing
position:
.,. Adjust the driver's seat so that you can easily
push the pedals all the way to the floor while
keep ing your knee(s) slightly bent
r=> ,&. .
.. Adjust the angle of the seatback so that it is in
an upright position so that your back comes in
full contact with it when you drive .
.. Adjust the steering wheel so that there is a d is­
tance of at least 10 inches (25 cm) between the
steering wheel and your breast boner=>
fig. 148.
If not poss ible, see your authorized Audi deal·
ership about adapt ive equipment .
.,. Adjust the steering wheel so that the steering
wheel and airbag cover points at your chest and
not at your face .
.. Grasp the top of the steering wheel with your
elbow(s) slightly bent .
.. For adjustab le head restraints: Adjust the head
restraint so the upper edge is as even as possi­
ble with the top of your head . If that is not pos­
sible, try to adjust the head restraint so that it ..,.
167

,....,
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0 > co ,...., seriously injured or killed by the airbag as it
unfolds. To help reduce the risk of serious
personal injury:
- Passengers must always sit in an upright po­
sition and never lean against or place any
part of their body too close to the area
where the airbags are located .
- Passengers who are unbelted, out of posi­
tion or too close to the airbag can be seri­ ously injured by an a irbag as it unfolds w ith
great force in the blink of an eye.
-Always make sure that there are at least 10 inches (25 cm) between the front pas­
senger's breastbone and the instrument
panel.
- Always make sure that there are at least
4 inches (10 cm) between the front passen­
ger's knees and the lower part of the instru­
ment panel.
- Each passenger must always sit on a seat of
their own and properly fasten and wear the safety belt belonging to that seat.
- Before driving, always adjust the front pas­
senger seat properly.
- For adjustable head restraints: befo re driv­
ing, always also adjust the head restraints
properly.
- Always keep you r feet on the floor in front
of the seat. Never rest them on the seat, in­
strument panel, out of the window, etc. The
airbag system and safety be lt will not be
able to protect you properly and can even in­
crease the risk of injury in a crash.
- Never drive with the backrest reclined or
tilted far back! The farther the backrests are
ti lted back, the greater the risk of injury due
to incorrect positioning of the safety belt
and improper seating position .
- Children must a lways ride in child seats
<=> page 209. Special precautions apply
when installing a child seat on the front
passenge r seat¢
page 184 .
Driving safety
Proper seating positions for passengers in
rear seats
Rear seat passengers must sit upright with both
feet on the floor consistent with their physical
size and be properly restrained whenever the ve­
hicle is in use.
To reduce the risk of injury caused by an incorrect
seat ing pos ition in the event of a sudden brak ing
maneuver or an accident, your passengers on the
rear bench seat must always observe the fo llow­
ing :
.,. For adjustab le head restraints: adjust the head
restraint so the upper edge is as even as possi­
ble with the top of your head. If that is not pos­
sible, try to adjust the head restraint so that it
is as close to this position as possible
¢page 170 .
.,. Keep both feet flat in the footwell in front of
the rear seat.
.,. Fasten and wear safety belts properly
¢page 179 .
.,. Ma ke sure that ch ild ren are a lways properly re­
s trained in a child restra int that is app ropr iate
for their size and age ¢
page 209.
A WARNING
Passengers who are improperly seated on the
rear seat can be serious ly injured in a crash.
- Each passenger must always sit on a seat of
their own and properly fasten and wear the
safety belt belonging to that seat.
- Safety belts only offer maxim um protection
when the safety belts are properly posi­
tioned on the body and secure ly latched. By
not sitting upright, a rear seat passenger in­
creases the risk of personal injury from im­
properly posit ioned safety belts!
- For adjustable head restraints: always ad­
just the head restraint properly so that it can give maximum protect ion .
169

,....,
N
0 > co ,...., -never sit on the edge of the seat
- never sit sideways
- never lean out the window
- never put your feet out the window
- never put your feet on the instrument panel
- never rest your feet on the seat cushion or back
of the seat
- never ride in the footwell
- never ride in the cargo area
8_ WARNING
Improper seating posit ions increase the r isk
of serious personal injury and death whenever
a vehicle is being used.
- Always make sure that all vehicle occupants
stay in a proper seating position and are
properly restrained whenever the vehicle is
being used.
Driver's and front
passenger's footwell
Important safety instructions
Appl ies to vehicles: with knee airbags
8_ WARNING
Always make sure that the knee airbag can in­
flate without interference. Objects between
yourself and the airbag can increase the risk
of injury in an accident by interfering with the
way the airbag deploys or by being pushed in­
to you as the airbag deploys .
- No persons (children) or anima ls shou ld ride
in the footwell in front of the passenger
seat.
If the airbag dep loys, this can result in
serious or fatal injuries .
- No objects of any kind should be carried in
the footwell area in front of the driver's or
passenger's seat. Bulky objects (shopping
bags, for example) can hamper or prevent
proper deployment of the airbag . Small ob­
jects can be thrown through the vehicle if
the airbag deploys and injure you or your
passengers.
Driving safety
Pedal area
Pedals
The pedals must always be free to move and
must never be interfered with by a floor mat or
any other object.
Make sure that all pedals move freely without in­
terference and that nothing prevents them from
returning to their original positions .
Only use floor mats that leave the pedal area free
and can be secured with floor mat fasteners .
If a brake circuit fails, increased brake pedal trav­
el is required to bring the vehicle to a full stop.
8_ WARNING
--
Pedals that cannot move freely can cause loss
of vehicle control and increase the risk of seri­
ous injury.
- Never place any objects in the driver's foot­
well. An object could get into the pedal area
and interfere with pedal function. In case of
sudden braking or an accident, you would
not be able to brake or acce lerate!
-Always make sure that nothing can fall or
move into the driver's footwell.
Floor mats on the driver side
Always use floor mats that can be securely at­ tached to the floor mat fasteners and do not in ­
terfere with the free movement of the pedals.
.. Make sure that the floor mats are properly se­
cured and cannot move and interfere with the
pedals~ &-
Use only floor mats that leave the pedal area un­
obstructed and that are firmly secured so that
they cannot slip out of position . You can obtain
suitable floor mats from your author ized Audi
Dealer.
Floor mat fasteners are installed in your Audi .
Floor mats used in your vehicle must be attached
to these fasteners . Properly securing the floor
Ill>
171

Driving safety
mats will prevent them from sliding into posi­
tions that could interfere with the pedals or im­
pair safe operation of your vehicle in other ways.
A WARNING
Pedals that cannot move freely can result in a
loss of vehicle control and increase the risk of
serious personal injury.
- Always make sure that floor mats are prop­
erly secured .
- Never place or install floor mats or other
floor coverings in the vehicle that cannot be
properly secured in place to prevent them
from slipping and interfering with the ped­ als or the ability to control the vehicle.
- Never place or install floor mats or other
floor coverings on top of already installed
floor mats. Addit ional floor mats and other
coverings will reduce the size of the pedal
area and interfere with the pedals.
- Always properly reinstall and secure floor
mats that have been taken out for cleaning.
- Always make sure that objects cannot fall
into the driver footwell while the veh icle is
moving. Objects can become trapped under
the brake pedal and accelerator pedal caus­
ing a loss of vehicle control.
Storing cargo correctly
Loading the luggage compartment
All luggage and other objects must be properly
s towed and secured in the luggage compart­
ment.
Fig. 150 Safe load pos it io nin g: place heavy objects as low
and as far forward as possible (example) .
172
Loose items in the luggage compartment can
shift suddenly, changing vehicle handling charac­
teristics. Loose items can also increase the risk of
serious personal injury in a sudden vehicle ma­
neuver or in a collision.
.,. Distribute the load evenly in the luggage com­
partment.
.,. Always place and properly secure heavy items in
the luggage compartment as far forward as
possible .
.,. Secure luggage using the t ie-downs provided
~ page 64.
.,. Make sure that the rear seatback is securely
latched in place.
A WARNING
Improperly stored luggage or other items can
fly through the vehicle causing serious per­ sonal injury in the event of hard braking or an
accident. To help reduce the risk of serious personal injury:
- Always put objects, for example, luggage or
other heavy items in the luggage compart­
ment.
-Always secure objects in the luggage com­
partment using the tie-down hooks and
suitable straps .
A WARNING
Heavy loads will influence the way your vehi­
cle handles . To help reduce the risk of a loss
of control leading to serious personal injury:
-Always keep in mind when transporting heavy objects, that a change in the center of
gravity can also cause changes in vehicle
handling:
- Always distribute the load as evenly as
possible.
- Place heavy objects as far forward in the
luggage compartment as possible .
- Never exceed the Gross Axle Weight Rating
or the Gross Vehicle Weight Rating specified
on the safety compliance sticker on the left
door jamb. Exceeding permissible weight
standards can cause the vehicle to slide and
handle differently .
Ill>-

.... N
0 > co .... .... -Please observe information on safe driving
~page 166.
A WARNING
To help prevent poisonous exhaust gas from
being drawn into the vehicle, always keep the
rear lid closed while driving .
- Never transport objects larger than those
fitting completely into the luggage area be­
cause the rear lid cannot be fully closed .
-If you absolutely must drive with the rear lid
open, observe the following notes to reduce
the risk of poisoning:
- Close all w indows,
- Close the power roof*,
- Open all air outlets in the instrument pan-
el,
- Switch off the air recirculation,
- Set the fresh air fan to the highest speed .
A WARNING
-
Always make sure that the doors, all win­
dows, the power roof* and the rear lid are se­
curely closed and locked to reduce the risk of
injury when the vehicle is not being used.
- After closing the rear lid, always make sure
that it is properly closed and locked.
- Never leave your vehicle unattended espe­
cially with the rear lid left open. A child
could crawl into the vehicle through the lug­
gage compartment and close the rear lid be­
coming trapped and unable to get out. Be­
ing trapped in a vehicle can lead to serious
personal injury.
- Never let children play in or around the vehi­
cle.
- Never let passengers r ide in the luggage
compartment. Vehicle occupants must al­
ways be properly restrained in one of the ve­
hicle's seating positions.
(D Tips
- Air circulation helps to reduce window fog­
ging. Stale air escapes to the outside
through vents in the trim panel. Be sure to
keep these slots free and open.
Driving safety
-The tire pressure must correspond to the
load. The tire pressure is shown on the tire
pressure label. The tire pressure label is lo­
cated on the driver's side B-pillar . The tire
pressure label lists the recommended cold
tire inflation pressures for the vehicle at its
maximum capacity weight and the tires that
were on your vehicle at the time it was man­ ufactured. For recommended tire pressures
for normal load conditions, please see chap­
ter
~ page 263.
' Tie-downs
The luggage compartment is equipped with four
tie-downs to secure luggage and other items.
Use the tie-downs to secure your cargo properly
~ page 172, Loading the luggage compartment.
In a collision, the laws of physics mean that even
smaller items that are loose in the vehicle will
become heavy missiles that can cause serious in­
jury. Items in the vehicle possess energy which
vary w ith vehicle speed and the weight of the
item. Vehicle speed is the most significant factor.
For example, in a frontal collision at a speed of
30 mph (48 km/h), the forces acting on a 10-lb
(4.5 kg) object are about 20 times the normal
weight of the item. This means that the weight
of the item would sudden ly be about
200 lbs. (90 kg). You can imagine the injuries
that a 200 lbs. (90 kg) item flying freely through
the passenger compartment could cause in a col­
lision like th is.
A WARNING
-Weak, damaged or improper straps used to
secure items to tie-downs can fail dur ing hard
braking or in a collision and cause serious per­
sona l injury.
- Always use suitable mounting straps and
properly secure items to the tie-downs in
the luggage compartment to help prevent
items from shifting or flying forward as dan­
gerous missiles .
- When the rear seat backrest is folded down,
always use suitable mounting straps and
properly secure items to the tie-downs in
173

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_& WARNING
Not wearing safety belts or wearing them im­
properly increases the risk of serious personal
injury and death . Safety belts can work only
when used correct ly.
-Always fasten your safety belts correctly be­ fore driving off and make sure all passen­
gers are cor rect ly restrained.
- For maximum protection, safety belts must
always be posit ioned properly on the body .
- Never strap more than one person, includ­
ing small ch ildren, into any belt .
- Never place a safety belt over a child sitt ing
on your lap.
- Always keep feet in the footwell in front of
the seat wh ile the vehicle is being driven.
- Never let any person ride w ith their feet on
the instrument panel or st icking out the
window or on the seat .
- Never remove a safety belt while the vehicle
is moving . Do ing so will increase your risk of
being injured or k illed.
- Never wear belts twisted.
- Never wear belts over rigid or breakable ob-
jects in or on your clothing, such as eye
glasses, pens, keys, etc., as these may cause
injury.
- Never allow safety belts to become dam­
aged by being caught in door or seat hard­
ware.
- Do not wear the shoulder part of the belt
under your arm or otherwise out of position .
- Several layers of heavy clothing may inter­
fere with correct positioning of belts and re­
duce the overall effectiveness of the system.
- Always keep belt buckles free of anything
that may prevent the buckle from latching
securely .
- Never use comfort clips or devices that cre­
ate slack in the shoulder be lt . However, spe­
cial clips may be requ ired for the proper use
of some child restraint systems.
- Torn or frayed safety belts can tear, and
damaged belt ha rdware can break in an acc i­
dent. Inspect belts regularly.
If webbing,
bind ings, buckles, or re tractors are dam-
Safet y bel ts
aged, have belts rep laced by an authorized
Aud i dea ler or qualified workshop.
- Safety belts that have been worn and loaded
in an accident must be replaced with the
correct replacement safety belt by an au­
thor ized Audi dealer. Replacement may be
necessary even if damage cannot be clearly
seen. Anchorages that were loaded must al­
so be inspected.
- Never remove, mod ify, d isassemble, or try
to repair the safety belts yourse lf.
-Always keep the belts clean . Dirty belts may
not work properly and can impair the func­
tion of the inert ia reel~
table Internal
cleaning on page 2 76.
Safety belts
Fastening safety belts
Safety first -everybody buckle up!
Fig. 157 Belt buckle and tongue on t he driver 's seat
To provide maximum protect ion, safety belts
must always be positioned correctly on the wear­
er's body .
.. Adjust the front seat and head restraint proper­
ly ¢
page 58, Front seats.
.. Make sure the seatback of the rear seat bench
is in an upright posit ion and securely latched in
p lace before using the belt¢ ,&. .
.. Ho ld the belt by the tongue and p ull it evenly
across the chest and pelvis~,&. .
.. Insert the tongue into the correct buckle of
your seat unti l you hear it latch securely
r:!)fig. 157 .
.. Pull on the belt to make sure that it is securely
latched in the buckle. ..,.
179