2017 AUDI A4 brakes

Assist
-Your settings are automatically stored and
assigned to the remote control key being
used.
Setting the driving program
A pp lies to: ve hicles w ith Audi adaptive cruise co ntro l
Depending on the selected driving program and
distance, driving behavior when accelerating will
vary from dynamic to comfortable.
Setting the driving program on vehicles
without drive select*
1>-In the Infotainment system, select: I MENU !>
Vehicle > left control button > Driv er assist >
Audi adaptive cruise control > Driving pro­
gram > comfort, standard or dynamic .
Setting the driving mode on vehicles with
drive select*
Refer tor=;;, page 122 .
(D Tips
Your sett ings are automatically stored and as­
signed to the remote control key being used.
Request for driver intervention
App lies to: ve hicles w ith Aud i ad aptive cruise co ntro l
Fig . 99 Instrument cluster: request for driver interve ntion
The request for driver intervent ion instructs you
to take over if the adaptive cruise contro l bra king
function is not able to mainta in a sufficient dis ­
tance to the vehicle driving ahead
c::> fig. 99.
l) Thi s is not ava ilab le in som e coun tri es .
102
Predictive control
(efficiency assist)
Description
App lies to: vehicles wit h Audi adap tive c ruise control and p re ­
dic tive efficiency ass ist
Fig. 100 In stru men t cl uster: p redict ive contro l
General information
The predict ive control 1> uses the map informa­
tion from the navigation system in order to react
proactively when driving. Information from the
camera -based traffic sign recognition* is also ap­
plied to recognize traffic signs
c::> page 24. When
coming up to areas with speed limits or changes
in the course of the road (such as curves, inter­
sections or traffic c ircles), the system brakes au­
tomatically and then accelerates back up to the
set speed .
When adaptive cruise control is switched off, the
system only provides notifications without con­
trolled interventions
c::> page 95.
The driver can override the predictive contro l at
any time by pressing the accelerator or brake
pedal. If the system changes the veh icle speed to
adapt to speed limits, you can change the speed
using the lever
c::>page 99 , fig . 95.
Always switch off the predictive control in
the following situations:
-When increased attention is needed from the
driver .
- In poor weather conditions such as snow or
heavy rain .
- When driving on roads in poor cond ition.

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
...

<( a, .... N ,....
N .... 0 0
3 a,
The system cannot guarantee that it will detect
vehicles correctly and it has switched off. The ra ­
da r senso rs have sh ifted o r are faulty . Drive to an
author iz ed Audi dealer or author iz ed Audi Se rvice
Faci lity immediately to have the malfunction cor­
rected .
Distance warning : currently una vailable . Sensor
v iew restricted due to surroundings. See own ­
er's manual
This message appears if the radar sensor view is
obstructed, for example by leaves, snow, heavy
spray or dirt . C lean the sensors ¢
page 97,
fig. 90 .
Distance warning: currently unavailable. See
owner 's manu al
This message appea rs if the sys tem has a tempo ­
rary fai lure. If this occ urs mult iple times, d rive to
an authorized Audi dealer or authorized A udi
Service Facility immediately to have the malfunc­
tion corrected.
ACC: Please fa sten seat belt
The system is no t comp lete ly available if the d riv ­
e r' s sea t belt is u nfastened .
Stationary object ahead
This message appears if you would like to switch
the system o n and there is a stationary object di­
rect ly in front of your vehicle.
Door open
The system is no t availab le when the door is
open .
Audi pre sense
Introduction
Applies to: ve hicles with Audi pre sense
W ith in the lim its of the system, t he pre sense
f u nctions can init iate measures in part icularly
dangerous sit uat ions to protect t he ve hicle pas ­
sengers and ot her road users.
- Because different veh icle systems such as the
ESC are i nterconnected , the
pre sense b asic in ­
t roduces p reempt ive safety meas ures for the
Assist
passengers i f an unstable driving si tuation is
detected.
- The
pre sen se front system uses the data from
the adaptive cruise contro l* radar sensors and
the camera to ca lculate the probability of a co l­
lision . With in the lim its of the system, an im­
pending co llision with vehicles can be detected
in both urba n and rural speed ranges. In t his
case, the system warns the driver visua lly,
acoust ica lly and w ith a jerk on the brakes if nec­
essary. If needed, i t can in itiate a partia l o r fu ll
dece lerat ion to reduce the collision speed or to
avoid the collision under certa in circumstances.
I n conjunction with pre sense basic/rear, the
front safety belts are a lso reve rsibly tens ioned
when needed . The pre sense front is a lso active
when adaptive cruise control* is sw itched off.
- Pre sense rear contains pre sense basic func­
tions. It uses the data from the side assist* ra ­
dar sensors and ca lculates within the limits of
the system the probability of a rear end colli­
sion with t he vehicle behind you. Pre sense rear
is also act ive when side assist* is sw itched off .
- Within the limits of the system,
pre sense city
uses the camera data and can detect an im­
pe nding collision with vehicles and pedestrians.
I n th is case , the system warns the driver visua l­
ly , acous tic ally and wit h a jerk on the b rakes if
necessary. If needed, it c an initi ate a full dece l­
erat io n to reduce the collis io n speed or to avoid
the collision under certain circumstances . In
conjunction with pre sense basic/rear, the front
safety belts are a lso reversibly tens ioned when
needed .
A WARNING
-
Read the genera l information on¢.&. in Gen -
eral information on page
97, c::> .&. in General
information on page 117 .
@ Tips
-Certa in pre sense funct ions sw itch off when
dr iving in reverse.
- The pre sense funct ions may not be availa­
ble if there is a malfunct ion in the ESC sys­
tem or t he a irbag control module .
107

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>-

Assist
Audi pre sense rear
Description
App lies to: ve hicles w ith Audi side assist
If the risk of a collision is detected, the following
functions can trigger:
- Reversible tensioning of the front safety belts
at the corresponding speeds .
- Closing the windows and sunroof*.
- Inflating the side bolsters* in the seat backrest
and seat surface.
- Switching on the emergency flashers with in-
creased frequency
l ).
The message Audi pre sense. ~ page 108,
fig. 104 will warn you about the danger.
Aud i drive select*: the function is not active de­
pending on the mode selected.
A WARNING
- To reduce the risk of an accident, please
note that the side assist* radar sensors do
not always detect every object.
- Pre sense rear does not react to people, ani­
mals or objects that are crossing the vehi­
cle's path or that are difficult to detect.
- Reflective objects such as guard rails, heavy
rain and ice can impair the function of the
radar sensors and the ability to detect a col­
lision risk .
(D Note
The radar sensors can be displaced by impacts
or damage to the bumper, wheel housing and
underbody. Pre sense rear can be impaired by
this . Have an authorized Audi dealer or au­
thorized Audi Service Facil ity check their func­
tion.
(0 Tips
- The pre sense rear functions switch off
when towing a trailer.
- The pre sense rear functions may also
switch off if there is a malfunction in the
side assist* system.
1> This is not ava ilab le in some co untri es.
110
Audi pre sense city
' Description
App lies to : vehicles wit h Audi pre sense city
Within the limits of the system, pre sense city
can warn you of impending collisions with
vehicles and pedestrians and initiate the applica­
ble braking maneuver if needed. Pre sense city is
active at a speed of 6 mph (9 km/h) and higher.
A pedestrian warning can occur at speeds up to 50 mph (85 km/h), and vehicle warnings can oc­
cur at speeds up to 155 mph (250 km/h). A pre
sense city braking maneuver is possible at speeds
up to 50 mph (85 km/h).
Warnings
App lies to: vehicles wit h Aud i pre sense city
The system recognizes various dangerous situa­
tions. The
early warning occurs when:
- a vehicle driving ahead brakes sudden ly,
- your own vehicle approaches a sign ificantly
slower vehicle or stationary vehicle in the direc­
tion of travel.
- a pedestrian is standing in the lane or is moving
into the lane.
When this warning occurs, it may only be possi­
ble to avo id a collision by swerving or braking
strongly. The message
Audi pre sense.
~ page 108, fig. 104 and a warning tone will
warn you about the danger.
Additionally, a jerk on the brakes may occur as an
acute warning when there is an impend ing colli­
sion . If you do not react to the acute warning, pre
sense city can brake to the point of complete de­
ce leration within the limits of the system. This
reduces the vehicle speed in the event of a colli­
sion. The message
Audi pre sense. also ap­
pears.
The following functions are triggered in conjunc­
tion with pre sense basic/rear:
- Reversible tensioning of the front safety belts .
- Closing the windows and sunroof*. ..,

_& WARNING
The exit warning system is subject to limita­
tions and cannot warn you before every im­
pending collision:
- If the vehicle is too wide for the parking
space and covered by the neighboring
vehicles.
- Approaching objects or people such as cy­
cl ists o r skateboarders may not be detected
under certain circumstances.
- The system does not react to stationary ob­
jects.
- The view of the radar sensors may be im­
paired by leaves, snow, heavy spray or d irt.
Clean the area in front of the sensors
r:!vpage 116, fig. 112.
(D Note
Also read this information ¢0 in General in­
formation on page 117.
@ Tips
- The ex it warning system is switched on and
off through the side assist¢
page 117.
-The display brightness for the exit warning
system cannot be adjusted.
- The system is not available when towing a
trailer.
Rear cross-traffic assist
A ppl ies to: vehicl es with rear cross-traffic assist
Fig. 115 Example display
Assist
Fig. 116 Infotainment system: rear c ross -tra ffic assist dis­
play
The rear cross-traffic ass ist can warn the driver of
a potential collision with approach ing cross-traf­
fic when driving in reve rse. Within its limits, the
system monitors the areas behind and next to
the vehicle using the radar sensors when leaving
a parking space
r:!vpage 116, fig. 112. Moving ob­
j ects that are approaching, such as cars, are de­
tected
¢ fig. 115.
If the system detects critical cross traffic when
backing out of a parking space, it wi ll react as fol­
lows:
- Visual indicator : an indicator appears in the In­
fotainment system disp lay with a red arrow
symbo l. The arrow points in the direction from
which the object is approaching
¢fig. 116.
-Audible warning signal: a continuous tone may
sound as an additional indicator when driving in
reverse.
- Automatic brake activation : a brief activation
of the brakes may also warn you of a potent ial
collision with an approaching object.
Requirements for using the rear cross-traffic
assist :
-The parking aid m ust be switched on
¢page 124.
-Reverse gear m ust be engaged.
- The speed must not be higher than approxi-
mate ly 9 mph (15 km/h).
A WARNING
- The rear cross-traffic assist is an assist sys­
tem and cannot prevent a co llision by itself.
The driver must always intervene. The driver
is always responsible for braking at the cor-
rect time .
~
119

Ass is t
- Please note that the rear cross-traffic assist
may act ivate the brakes unexpectedly. Se­
cure any cargo that you are transporting to
reduce the risk of damage or injury .
- An additional brake act ivat ion may be tr ig­
gered within 20 seconds after an automat ic
brake activation.
- If there is an acoustic warning signa l from
the rear cross-traff ic assist, then the park­
ing system may not warn you of detected
obstacles under certa in circumstances .
- The view of the radar sensors may be im­ paired by leaves, snow, heavy spray or d irt.
Clean the a rea in front of the sensors
~ page 116, fig . 112.
A WARNING
T he rear cross-t raff ic assist is s ubject to lim i­
t at ions and cannot warn you before every im­
pending collision:
- If the vehicle is too w ide fo r the pa rki ng
spa ce and covered by the ne ighbor ing
vehicles.
- People , such as cyclis ts, jogge rs, in line skat­
ers and pedestrians, may not be detected
under certain circ umstances.
- If you are in a par allel par king sp ace.
(D Note
Also read this info rmation ~ CD in General in­
formation on page 117.
(0 Tips
- You can cancel the automatic brake activa ­
tion with increasing braking force if you ap­
ply the bra kes yourself or accele rate cons id­
e rab ly.
- In some s ituations, rea r cross-traffic ass ist
may warn you even if t here is no cross traffi c
i n a critic al are a, for examp le w hen ba cking
i nto a parking space or maneuver ing.
- T he rea r cross -traffic ass ist also switches off
whe n you swi tch off the ESC.
- T he rea r cross traffic assist switches on and
off thro ugh the p arking aid<:?
page 12 4.
- T he system is not ava ilable when towing a
trailer.
120
' Messages
Applies to: vehicles with Audi side assist
A message appea rs in the ins trument cluster dis­
play if the side ass ist sw itches off automat ica lly.
@j Audi side assist: currently unavailable . Sen­
sor vi sion re stricted due to surroundings. See
owner' s manual
@j Audi side ass ist and ex it warning: currently
unav ailable . Sensor vi sion restricted due to sur­
rounding s
The radar sensors ' vision is affected . The area in
front of the sensors must not be covered by bike
racks, stickers, leaves, snow or any other objects .
Clean the area in front of the sensors, if necessa­
r y
<:? page 116, fig . 112.
@j Audi side ass ist: currently unavailable . See
owner's manual
@j Audi side ass ist and exit warning: currently
unavailable. See owne r's manual
Side assist ca nnot be switched on at this time be­
cause ther e is a malfunction (for example, the
battery charge level may be too low).
@j Audi side as sist: malfunction! Plea se contact
Service
@j Audi side assi st and exit warning: malfunc ­
tion! Plea se contact Service
The system cannot guarantee that it will detect
vehicles correct ly and it has sw itched off. The
senso rs have been moved or are fa ulty . Have the
system checked by an authori zed Aud i dea ler o r
a uthorized Aud i Serv ice Facility soon.
@j Audi side assi st: unavailable in towing mode
@j Audi side ass ist and ex it warning: currently
unavailable. Towing mode
Side assist switches off automatically when the electrical connector in the factory-installed trail­
er hitch is connected . There is no guarantee the
system will sw itch off when using a retrofitted
trailer hitch . Do not use side assist and the ex it
warning when tow ing a tra ile r.
Ill Rea r parking aid: obstacl e detection res trict-
ed ..,.