2017 AUDI A4 light

Assist Switching predictive control on and off
Applies to: ve hicles w ith Aud i adapt ive cruise co ntro l and pre ­
di ctive eff iciency assist
• Select in the Infotainment system: I MENU I but­
ton
> Vehicle > left control button > Driver as­
sist
> Audi adaptive cruise control.
Set speed limit
When th is function is sw itched on, the system re­
sponds to the speed limits. This can also be done
with at tolerance, if desired . In this scenar io, you
may fall below or exceed the set speed in
favor of
increased efficiency.
Adaptation to route ahead
When this function is sw itched on, the adapta­
tion to the route ahead (such as a reduction in
speed at curves) activates.
Congestion assist
Description
A pp lies to: ve hicles with Aud i adapt ive cruise co ntrol
Congestion assist supports the driver when driv­
ing in traffic jams or in heavy traffic.
Fig. 101 Turn signal lever: congestion ass ist button
Fig . 102 Inst rument cluster: congestion assist
104
In a speed range under 40 mph (65 km/h), con­
gestion assist can he lp to keep the vehicle within
a lane calculated by the system. Within the limits
of the system, the system controls the steering
automat ica lly when adaptive cruise contro l is
switched on. Since congest ion assist is only a n
ass ist system, the driver must always keep his or
her hands on the steering wheel and be ready to
stee r. The driver can override the control at any
time by actively steering.
The system is designed for driving on express­
ways and highways .
Switching congestion assist on and off
• Press the <=) fig . 101 button to switch the sys­
tem on and off.
• To turn the system off completely, select in the
Infotainment system:
I MENU I button> Vehicle
> left control button > Driver assist > Conges­
tion assist .
If congestion assist was deactivated through the
Infotainment system, you can continue operating
the active lane assist using the
Q fig. 101 button
Q page 113. The congestion assist functions are
no longer available.
Requirements for using congestion assist:
-Congestion assist must be switched o n in the
Infota inment system.
- Adaptive cru ise control must be switched on
and active ¢
page 98.
Always switch off congestion assist in the
following situations:
-When increased attention is needed from the
driver .
- In poor weather conditions such as snow or
heavy ra in.
- When driving on roads in poor cond ition.
- In construction zones.
- In city driving.
Congestion assist availability:
When you are in the Driver assist view in the in­
strument cluster display, the indicator light turns
on
iii and the message Congestion assist availa­
ble
appears if a traffic jam situation was detect-
ed. You can open up the
Driver assist display .,.

using the multifunction steering wheel buttons
¢
page 12. To activate congestion assist, you
must press the¢
fig. 101 button and switch on
the adaptive cruise control¢
page 98.
Indicator lights
11'1 and•-congestion assist is switched on .
Veh icles driving ahead were detected. Your vehi­
cle adapts while driving
¢ fig. 102 .
•-Congestion ass ist switches off if the dr iver
does not take ove r stee ring after multip le driver
intervention requests . The system brakes the ve ­
hicle until it is stationary .
.&_ WARNING
Always keep your hands on the steering whee l
so you can be ready to steer at any time. The
driver is always responsib le for staying in a
lane and for assessing traffic situations cor­
rectly . Read and follow the warnings on¢.&
in General information on page 97 . Never use
conge stion assist in the following si tuations
or yo u will increase t he ris k of an a cci den t.
- Drivi ng offroad or on unpaved roads. Con-
gestio n assist is only designed for use on
paved roads.
- In city dr ivi ng or in co nst ru ct ion zones.
- On curving stretches of road .
- In narrow lanes.
- In unclear traffic situations s uch as at inter-
sections or toll stations.
@ Tips
You are not necessarily g uided to the center
of yo ur lane.
A ss ist
Distance indicator and
distance warning
Description
Applies to: vehicles with Audi adaptive cruise control
Fig . 1 03 Instrumen t cl uster: dist ance indicato r/warn ing
At speeds above 65 mph , this function measures
the time between the vehicle driving ahead and
shows th is in the instrument cluster display
¢ fig . 103 ..
You can set a wa rning thresho ld between 0 .6 and
3.0 seconds. The . indicator light appears if you
fall be low the set d istance.
Switching the distance indicator /warning on
and off
.. In the Infotainment system, select: I MENU I
button > Veh icle > left control button > Driver
ass ist> Distan ce warning .
.&_ WARNING
-
- Read and fo llow the warnings on¢.& in
General information on page
97.
-
- The drive r is always responsible fo r adhering
to the regulat ions app licab le in that coun­
try .
@ Tips
You may fall below he warning thresho ld
briefly when passing or when q uickly ap­
p roaching a slow vehicle. There is no war ning
i n this scenar io. A warning is g iven only if you
fall be low the warning thresho ld for a n ex­
tended per io d of t ime.
105

Assist
Messages
Applies to: vehicles with Audi adaptive cruise control
II ACC with Conge stion assist: unavailable. See
owner 's manual
Th e system c annot guarantee that it w ill detec t
ve hicl es co rre ctly and it h as swit ched
off. T he ra ­
dar senso rs have s hifted o r are faul ty . D rive to an
authorized Audi dealer or authorized Audi Se rvice
Facility immediately to have t he mal function cor­
rected.
II ACC with Congestion assist: currently un­
available. Sensor v ision restricted due to sur­
roundings. See owner 's manual
T hi s message appears if the radar sensor view is
obs truc ted, for example by leaves, snow, heavy
spray or dirt. C lean the sensors ~
page 97,
fig . 90.
IIJ ACC with Congestion assist : currently un­
available. Gradient too steep
T he road exceeds the maximu m possib le grade
for safe ope ra tion. The systems c annot be swi tch ­
e d on.
IIJ ACC with Congestion assist: only available in
D, Sor M
Select the D/S o r M selector lever position .
Bl ACC with Congestion assist: currently un·
a vailable . Parking brake applied
The systems sw itch off if yo u set the pa rk in g
brake. The systems a re availab le again after you
release the pa rking brake .
IIJ ACC with Congestion assist : currently un­
available. Stabilization control (ESC ) input
This message appea rs if the Ele ct ro nic St abiliza­
tion Cont rol (ESC) is ta king a ction to s tabilize the
ve hicl e. The sys tems sw itch
o ff in this s cenar io.
IIJ ACC with Congestion assist: manual control!
This message appea rs if the veh icle rolls bac k
when starting on a slight incl ine , even thoug h the
sys tems are ac tive . P ress the b rake pedal to pre ­
ve nt the vehicle from rolling o r sta rting to move.
106
ilJ ACC with Congestion a ssist: currently un­
available. Downhill assist activated
Y ou canno t activ ate the sys te m when hill hold as­
s ist is active.
tei ACC with Congestion assist: manual control!
This message appears if the driver does not take
over steering after multiple driver i ntervention
r equests and the system sw itches
o ff . The veh icle
brakes un til it is sta tionary .
tei Congestion assist: unava ilable . See owner's
manual
The system can no longer ensu re that the vehicle
will stay in t he lane and switches
off. Have your
vehicle checked by an authorized Audi dealer o r
aut horize d Aud i Serv ice Facility if the ma lf u nc­
t ion is continuous .
II Congestion assist: Please take over steering!
This message app ears as soon as t he system
stops detect ing steering act iv ity when the system
li mits a re reached . Always keep your hands o n
t h e steer ing whee l so you can be ready to steer at
any t ime.
@ Conge stion assist: currently unavailable.
Please fasten seat belt
The system swi tches off when the drive r's safety
b elt is unfas tene d.
II ACC: efficiency as sist not available in thi s
country
The adaptation to speed lim its and rou tes ahead
i s not available in this co unt ry .
ii ACC: efficiency assist currently unavailable .
See owner's manual
The adaptation to speed lim its and routes ahead
switches off at speed limits under 20 mph
(30 km/h).
The message can also appear if the adaptation to speed limits and routes ahead has a temporary
failure. Have your vehicle checked by an a uthor­
i zed Audi dealer or author ized Audi Se rvice Facili­
ty if the malfunction is cont inuous.
Distance warning: malfunction! Please contact
Service
...

Ass is t
- Note that the reversible belt tensioner on
the front passenger's side deactivates when
the front passenger's a irbag is deactivated.
- Switch the pre sense off when you are not
using public streets or when loading the ve­
hicle onto a vehicle carrier, train, ship or
other type of transportation. This can pre­
vent an undes ired intervention from the pre
sense system .
Audi pre sense basic
Description
Applies to: vehicles with Aud i pre sense basic
The pre sense basic functions are activated at a
speed of approximately 20 mph (30 km/h) or
h igher.
The fo llowing functions can be triggered unde r
certain conditions within the limits of the sys­
tem:
- Tensioning of the safety belts (for example,
during heavy braking): the front sa fety belts
have reversible belt tensioners . If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger again.
- The emergency flashers activate
1) , the win ­
dows and the sunroof* close (for example when
under- or oversteering) : the clos ing process for
the windows and the sunroof* in itiates.
The message
Audi pre sen se. ~ page 108,
fig. 104 will warn you abo ut the danger.
Aud i drive select*: the trigger times are adjusted
depending on the mode selected .
Audi pre sense front
Description
Applies to: vehicles with Audi adapt ive cruise control
W ith in the lim its of the system, pre sense front
can wa rn you of impending coll is ions and initiate
the co rresponding brak ing mane uvers o r the sup ­
port ing measures when avoiding a collision .
1> This is not ava ilab le in some co untri es.
108
If detected in time, the system can rank the dan ­
gerous situation as critical if a vehicle driving
ahead brakes suddenly, if your own veh icle is ap­
proaching a significant ly slower veh icle at h igh
speed or when there is an oncoming veh icle dur­
i ng a turning maneuver .
If detection is not possible, then pre sense front
does not react.
Warnings
Applies to: vehicles with Audi adapt ive cru ise control
F ig . 104 Instrument cl uster : approach warning
G eneral information
The system recognizes various dangerous situa ­
tions. The
early w arning occurs when:
- a vehicle d riving ahead bra kes sudde nly,
- your own veh icle approaches a sign ificant ly
slower ve hicle or stationa ry vehicle in the direc­
tion of trave l.
When this warn ing occurs, it may o nly be possi ­
ble to avo id a collision by swerving or braking
strongly. The message
Audi pre sen se.
~ fig. 104 and a wa rning tone will warn you
abo ut the dange r.
If you do not react enough or no t at all to a dan­
gerous s ituation that was detected by the sys­
tem, p re sense front provides assis tance by ap ­
ply ing the b rakes .
If a collision is imminent, the system will fi rst
provide an
a cute warning by b raking sharply. You
will a lso warned by an indica to r in the instrument
cl us ter disp lay ~
fig. 104. If yo u do not react to
the acute warning, pre sense front can brake with
IJ>-

<( a, .... N ,....
N .... 0 0
3 a,
increasing force within the limits of the
system
l)_ This reduces the vehicle speed in the
event of a collision. At low vehicle speeds, pre
sense front can initiate a complete deceleration
shortly before a collision with a vehicle driving
ahead
1>. If pre sense front determines that you
are not braking strongly enough when a collision
is imminent, it can increase the braking force .
The following functions trigger in conjunction
with pre sense basic/rear at corresponding vehi ­
cle speeds :
- Reversible tensioning of the front safety belts.
- Closing the windows and sunroof*.
- Inflating the side bolsters* in the seat backrest
and seat surface.
Audi drive select*: the reversible belt tensioner,
the closing of the windows and sunroof* as well
as the inflating of the side bolste rs* on the seat
backrest and seat surface are not active depend­
ing on the mode selected .
Collision avoidance assist
Collision avoidance assist helps you to steer the
vehicle around an obstacle in a critical situation.
If you avoid an obstacle after the acute warning,
then the collision avoidance supports you by ap­ plying slight steering adjustment to correct your
steering wheel angle as long as you are actively
steering. Collision avoidance assist is available at
speeds between approximately 20 mph (30 km/
h) and 90 mph (150 km/h).
Turn assist
When starting to drive and up to speeds of maxi­
mum 6 mph (10 km/h), the turn assist uses a
braking intervention to prevent your vehicle from
colliding with an oncoming vehicle when turning left or right (available in certain countries) . The
braking intervention causes your vehicle to stay
in its lane.
.8, WARNING
-Pre sense front cannot overcome the laws of
physics.
It is a system designed to assist and
1) This is not availa ble in some co untries.
Assist
it cannot prevent a collision in every circum­
stance. The driver must always intervene.
The driver is always responsible for braking
at the correct time. Do not let the increased
safety provided tempt you into taking risks .
This could increase your risk of a collis ion.
- The system can deploy incorrectly due to
system-specific limits.
- Please note that the sensors and the camera
do not always detect all objects or lane
markings . This increases the risk of an acci­
dent.
- Pre sense front does not react to people, an­
imals or objects that are crossing the vehi­
cle 's path or that are difficult to detect
c> &..
in General information on page 97.
-Reflective objects such as guard rails or the
entrance to a tunnel, heavy rain and ice can
affect the function of the radar sensors and
the system's ability to detect a collision risk.
(D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. Pre sense front can be impaired
by this. Have an authorized Audi dealer or au­
thorized Audi Service Facility check their func­
tion.
(D Tips
- You can cancel the braking with increasing
force that is initiated by the system by brak­
ing yourself, by accelerating noticeably or
by swerving.
- 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 are switch­
ed off when the ESC is limited or switched
off
c> page 135 .
109

<( a, .... N ,....
N .... 0 0
3 a,
-Inflating the side bolsters* in the seat backrest
and s eat surfac e.
Aud i drive select*: the function is not active de ­
pending on the mode selected.
A WARNING -,..___
-Pre sense city cannot overcome the laws of
physics. It is a system designed to assist and
it cannot prevent a collision in every circum­
stance. The driver must always intervene.
The driver is always responsible for braking at the correct time . Do not let the increased
safety provided tempt you into taking risks.
This could increase your risk of a collision .
- The system can deploy incorrectly due to
system-specific limits.
- To reduce the risk of an accident, please
note that the camera does not always detect
every object .
- Pre sense city does not react to animals,
crossing or oncoming vehicles, objects such
as bars, railings or railcars, and objects that
are difficult to detect~&.
in General infor­
mation on page 97.
A WARNING
Pre sense city may be restricted or not availa­
ble in the following example situations:
- in heavy fog, rain, spray or snow.
- when there are visual obstructions, such as
glare, reflections or var iations in light.
- when it is dark .
- if the camera window or the windshield is
dirty, iced over, damaged or covered .
- when driving on snow, ice or loose ground .
- on sharp curves.
- if the ESC was restricted or switched off .
- when towing a trailer.
- when the driver's seat belt is unfastened.
- up to ten seconds after sw itching on the ig-
nition.
1 ) Thi s is no t avail able in some c oun tries.
Assist
(D Note
Impacts or damage to the camera mount on
the windshield can displace the sensor . Pre
sense city can be impaired by this. Have an au­
thorized Audi dealer or authorized Audi Serv­
ice Facility check their function .
(i) Tips
-You can cancel the system braking interven­
tion if you accelerate considerably or swerve
away .
- Keep in mind that pre sense city can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to reduce
the risk of damage or injury.
- When there is a malfunction in the camera,
the pre sense city functions also switch off.
Settings in the
Infotainment system
Applies to: vehicles with Aud i pre sense
.,. Select in the Infotainment system: I MEN U! but­
ton
> Vehicle > left control button > Driver as­
s ist > Audi pre sense.
Audi pre sense-
switch On/Off. You can switch
the pre sense functions on and off with th is.
If the system is switched off, it switches on again
automatically once the ignition is switched on
again
l ).
Early warning1
) -the early warning can be
switched off or the pre sense city/front warning
point
( Early /Mediu m/La te) can be set .
Driver messages
Applies to: vehicles with Aud i pre sense
fll Audi pre sense currently restricted. Restrict­
ed sensor vision due to surroundings. See own­
er's manual
This message appears if the radar sensor and
camera view is obstructed, for example by leaves,
snow, heavy spray or dirt . If necessary , clean the .,..
111

Assist
sensors and the area around the camera
~ page 97, fig. 90 or~ page 116, fig . 112.
Ill Audi pre sense: malfunction! Please contact
Service
This message appears when the pre sense func­
tion is affected. For examp le, this could be
caused by a faulty sensor. Dr ive to an authorized
Aud i dealer or a utho rized Aud i Serv ice Facility im­
mediately to have the malfunction cor rected.
Ill Audi pre sense: currently restricted. Towing
mode
Pre sense rear and the pre sense city braking in­
tervent ions sw itch off automatically when the
electrical connector in the factory-installed trail­
er hitch is connected. There is no gua rantee the
f unct ions will swi tch off when using a re trofitted
trai ler hitch .
Ill Audi pre sense: currently restricted
This message appears if the ESC is restr icted or
sw itched off, for example.
Ill Audi pre sense: currently restricted. See
owner's manual
This message appears when there is a temporary
fa ilur e in a subsystem, such as the ESC. If this
message appears repeated ly, dr ive to an author­
ized Audi dealer or authorized Audi Se rvice Facili­
ty to have the malfunction corrected .
Ii] Audi pre sense: emergency braking system
off
This message appears if the pre sense functions
are switched off through the Infotainment sys­
tem or if th e system is not ready.
Audi active Lane assist
Description
Applies to: veh icles w ith Audi active lane assist
Active lane assist (lane departure warning) de­
tects lane ma rker lines withi n the l imits of the
system using a camera in the windshield. If you
are approaching a detected lane marker line and it appears likely that you will leave the lane, the
system will warn you w ith corrective stee ring .
You can override this steering at any time . If you
112
pass over a line, the steering wheel will vibrate
lightly. In order for this warning vibration to oc­
cur, it must first be switched on in the Infotain­
ment system. Active lane ass ist is ready for oper­
a tion when the lane marker line is detected on at
least one side of the vehicle .
T he system is des igned for driving on express­
ways and highways and therefore on ly activates
a t speeds above approximately 40 mph (65 km/
h) .
Applies to vehicles with s ide ass ist*: if you acti­
vate a turn signa l when active lane assist is ready
a nd it classifies a lane change as critical bec ause
of veh icles traveling a longside you or approach ­
i ng you, there will be noticeable corrective steer­
i ng shortly before you leave the lane. This will at­
tempt to keep your vehicle in the lane.
Applies to vehicles without side assist* : the sys ­
tem does not warn when it is ready if you act ivate
the turn signal before crossing the lane marker
lin e. In this case, it assumes that you are chang­
in g lanes intent ionally.
Applies to vehicles with adaptive cruise contro l*:
there is no corrective steer ing or warnings if the
system recognizes a distinct passing maneuver.
If the conditions are met, congestion assist
switches on at speeds under approximately
40 mph (65 km/h)
¢page 104.
_& WARNING
-The system warns the driver that the vehicle
is leaving the lane using correct ive steering.
The driver is always responsible for keeping
the vehicle within the lane.
- The system can help you keep the vehicle in
the lane, but it does not drive by itself. Al­
ways keep your hands on the steering
wheel.
- Corrective steering may not occur in certain
situations, such as during heavy braking .
- There may be cases where the camera does
not recognize all lane marker lines. Correc­
tive steering can only take place on the side
of the vehicle where lane marker lines are
detected.

-Other road structures or objects could possi­
bly be identified unintentionally as lane
marker lines. As a result, corrective steering
may be unexpected or may not occur .
- The camera view can be restr icted, for ex­
amp le by vehicles driving ahead or by rain,
snow, heavy spray or light shining into the
camera. This can result in act ive lane assist
not detecting the lane marke r lines or de­
t ecting them incorrectly.
- In certa in situations where v is ibility is low,
th e vehicle may swi tc h from an "early" to
" la te" steering co rrection .
- Under certa in conditions s uch as ruts in the
road, an inclined roadway o r crosswinds, the
c o rrective steering a lone m ay not be eno ugh
to keep the vehicle i n the middle of the lane .
- For safe ty re asons, active la ne as sis t m ust
not be used when the re are poor road and/
o r weathe r cond itions such as slippery
roads, fog, grave l, heavy rain, snow and the
potent ial for hydroplaning . Using active lane
assist under these conditions may increase
the risk of a crash.
Switching on and off
App lies to: veh icles with Audi active lane assist
Fig. 10 5 Turn s ig n al lever: b utton for ac tive lane ass is t
F ig. 106 Winds hield: ca mera window for act ive lane ass is t
A ss ist
.,. Press the r=;, fig . 105 button to switch the sys­
tem on and off. The indicator light in the in­
strument cluster turns on or off .
Analog instru- Audi virtual Meaning on
ment cluster cockpit /Head- the corre-
up display* sponding s ide
Green li ne(s) Green line(s) Active lane as-
(left or rig ht) (left or r ight) sist is activat-
-J '/ ed and ready
to provide
warnings .
-Red line Active lane as-
(left or r ight) sist warns you
'/ be fore leaving
a lane. In addi -
tion, the steer-
i ng whee l vi-
bra tes light ly.
Yellow line(s) Gray
Li ne(s) Active lane as-
(left or right) (left or r ight) sist is activat-
-J ed, but is not
r eady to give
warning
If the system is switched on but is not ready to
provide warn ings, one of the following could be
t h e cause:
- There is no lane marker line .
- The relevant lane marker lines are not detected
(for examp le , markings in a construction zone
or because they a re obst ructed by snow, dirt,
wate r o r li ght ing).
- The vehicle speed is be low the activation speed
of approximately 40 mph (65 km/h).
- The lane is narrower than approximately 8 feet
(2 .5 m) or w ider than approximately 15 feet
(4.5 m) .
-The curve is too narrow.
- The driver 's hands are not on the steering
wheel.
@ Tips
- Make sure the camera window c::> fig. 106 is
not covered by stickers or anything else. For
information on cleaning, refer to
c::> page 33 7.
113