2017 AUDI S4 lane assist

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,
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

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*. ..,

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

Assist
-In certain countries: if the system is switch­
ed on, it will remain operable each time the ig nition is switched on.
Lane assist display in the instrument
cluster
A pp lies to: ve hicles with Audi active lane a ssist
F ig . 107 Instrument cl uster (multi -color d isplay): active
lane assist is switched on and rea dy to provide warnings
Fig . 108 Inst rument cluster (monochrome display): active
lane assist is sw itched on
You can open up the Driver assist display for the
active lane ass ist using the mult ifunction steer­
ing wheel buttons
r:::> page 12.
An additiona l indicator appears in the Head -up
d isp lay* .
Multi-Color Display
Refer tor:::> fig. 107
114
Driver assist display Meaning on the corre-
in the instrument sponding side
cluster
Green line(s) Active lane assist is acti-
(left or right) vated and ready to pro-
vide warnings .
Red line Active lane assist warns
(left or right)
you before leaving a lane.
In addit ion, the steering
wheel vibrates lightly.
Gray line(s) Active lane assist is acti-
(left or right)
vated, but is not ready to
give warning
Monochrome display
Refer to r:::> fig. 108
Driver assist display Meaning on the corre-
in the instrument
sponding side
cluster
Light gray line(s) Active lane assist is acti-
(left or right) vated and ready to pro-
vide warnings.
Blinking line(s)
Active lane assist warns
(left or right)
you before leaving a lane.
In addition, the steering
wheel vibrates lightly.
Dark gray line(s) Active lane assist is act i-
(left or right) vated, but is not ready to
. . give warning
Messages in the instrument cluster display
If the active lane assist sw itches off automatical­
ly , the indicator light in the display turns off and
one of the follo wing messages appears:
rl1 Audi active lane assist: currently unavaila­
ble . Camera view restricted due to surround­
ings. See owner's manual
This message appears if the camera is unable to
detect the lines. This could happen if:
- The camera window
¢page 113, fig. 106 is
dirty or covered in ice. Clean this area on the
windshield
r:::> page 337 .
-The camera fie ld of view is fogged over. Wait
until the fog has cleared before switching the
active lane assist on aga in.

-Th e system has been unable to detect the lanes
for an extended period of time due to road con­
ditions . Sw itch act ive lane assist back on when
the lines are more visible .
rm Audi active lane assist: currently unavaila­
ble. See owner's manual
There is a temporary active lane assist malfunc­
tion . Try sw itching the active lane assist on again
later .
• Audi active lane assist: malfunction! See
owner's manual
Drive to an authorized Aud i dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
rm Audi active lane assist: Please take over
steering!
This message appears if you are not steering by
yourself. Active lane assist is activated, but is not ready to give warning
Adjusting the steering time and vibration
warning
Applies to: vehicles with Audi active lane assist
You can adjust individual active lane assist set­
tings in the Infotainment system .
... Select in the Infotainment system: !MENUI but­
ton
>Ve hicle > left control button > Driver as­
sist
> Audi active lane assist .
Steering time Early:
in this setting, the correct ive steering hap ­
pens continuously to help keep the vehicle in the
center of the lane.
Late: in this setting, the system provides correc­
tive steering just before a vehicle whee l goes over
a detected lane marker line.
Vibration warning
You can switch the additional vibration warning
in the steering wheel on or
off.
A WARNING
-
With the vibration warning switched off,
there will also be no visual warning in the in-
Assist
strument cluster disp lay when crossing a lane
marker line.
(D Tips
In certain countries: your settings are stored
automatica lly and assigned to the remote
control key in use.
Audi side assist
Description
Applies to: vehicles with Audi side assist
Fig. 109 Sensor detection range
Fig. 110 Disp lay on th e exterio r m irror
Side assist (lane change assist) helps you mon itor
your blind spot and traffic behind your vehicle .
Within its lim its, the system warns you about
vehicles that are coming closer or that are travel­
ing within your sensor range
(D <=?fig. 109. If a
lane change is classified as critical, the display@
turns on in the exterio r mirror
<=? fig. 110 .
The display in the left exterior mirror p rovides as ­
s istanc e when making a lane change to the left,
wh ile th e display in the rig ht exterior m irro r pro­
vides ass istance when making a lane change to
the right. ..,.
115

Assist
Information stage
As long as you do not activate the turn signal,
side assist
informs you of the vehicles that are
detected and classified as critical. The display in
the mirror turns on, but is dim .
The display remains dim in the information stage
so that your view toward the front is not distur­
bed.
Warning stage
I f the display in a mirror blinks br ight ly when you
ac tivate a turn signal, side assist is
warning you
about detected ve hicles that it has classified as
critical. If this happens, check traffic by glancing
in the exterior mirror and over your shoulder
q &.
in General information on page 117.
Appl ies to vehi cles w ith active lane ass ist*: the
disp lay in the mirror can also blink if you have not
activated a turn signal: if you are approaching a
detected lane marker line and it appears you will
be leaving the lane, side assist will warn you
about detected vehicles that it has classified as
cr itical.
(D Tips
You can adjust the brightness of the display in
the rearview mirror
q page 118.
116
General information
Applies to: vehicles w ith Audi side assist
®
®
©
Fig. 111 Driving s it u ations
~ AUDI
•
Fig. 112 Rear of the ve hicle: position of the se nsors
Side assist functions at speeds above approxi­
mately 9 mph (15 km/h).
@ Vehicles that are approaching
0
I
In certain cases, a veh icle w ill be classified as
critical for a lane change even if it is st ill some­
what far away. The faster a vehicle approaches,
the sooner the display in the exterior m irro r will
turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior mirror if they are classified as cr itica l for
a lane change. A ll vehicles detected by side ass ist ..,.