2018 AUDI A4 tow

Assistance systems
Changing the speed
Applies to: vehicles w ith Audi adaptive cruise co ntro l
0
f
' 0
Fig. 113 Operat ing lever : c h ang ing the speed
.,. To increase/decrease the speed in 1 mph (1
km/h) increments, br iefly
tap the lever toward
010 c:> fig . 113 to the first level.
.,. To inc rease/decrease the speed in 5 mph
(5 km/h or 10 km/h) increments, br iefly
tap
the leve r toward 0 10 to the second level.
.,. To increase or decrease the speed quickly, hold
the lever towards 0 10 u p to the fi rst or sec­
ond level until the red
LED @ reaches the de­
s ir ed speed
c:> poge 110, fig. 112 .
You can a lso preselect the speed when adaptive
cruise control is not active by moving the lever in
the desired d irection
0 10 . Activate the previ­
ously selected speed by pulling the lever into po­
sition
(D c:>poge 110, fig. 111 .
After each change, the new stored speed appears
briefly in the status line
c:;, poge 110, fig. 112 @.
When adaptive cruise control is active, the ill in­
dicator light turns on and when adaptive cruise
control is not active, the
ll'J indicator light turns
on . In the Audi virtual cockpit*, the
II indicator
light turns on instead.
l) Thi s is not ava ilab le in som e coun tri es .
112
Dr iving in stop-and-go traffic
App lies to : vehicles wit h Audi adapt ive cruise control and au­
tomatic transmiss ion
Fig. 114 Instrument cl uster: safe start monitor
The adaptive cru ise control system also assists
you in stop-and-go traffic . If a vehicle driving
ahead stops, your vehicle will brake and stay at a
stop w ithin the limits of the system.
.,. To resume driving with adaptive cruise control,
tap the accelerator pedal or
.,. Pull the lever toward you into position@
c:>page 113, fig. 115.
Starting to drive with adaptive cruise
control
1 )
As long as the message ACC: automatic go dis­
plays and the vehicle dr iv ing ahead s tarts to
move, your vehicle will start driving
c:> ,&. Yo u can
activate
ACC: automatic go again for a short
time by pulling the lever to position@.
Fo r safety reasons, your vehicle w ill only start to
drive automatically if:
- the drive r's safety belt is fastened
-all doors and the hood are closed
- your vehicle is not stationary for more than
three minutes
Safe start monitor
If an obstacle is detected when you start driving,
you w ill be alerted to the danger by
the . indi­
cator light and the image in the instrument clus­
ter display
c:> fig. 114 c::> .&. . An audio signal will
also sound . Your vehicle will drive more slowly
when starting. This may also happen in some sit -
uations when the re is no apparent obstacle.
.,..

-Press the brake pedal to slow your vehicle
down.
A WARNING
If the message ACC: automatic go1> appears,
your vehicle will start driving even if there is an obstacle between your vehicle and the ve­
hicle driv ing ahead. This increases the risk of
an acc ident .
{!) Tips
If adaptive cruise control is active and your
vehicle does not start driving even though the
message
ACC: automatic go1 l appears, you
can start driving by tapping the accelerator
pedal.
Interrupting cruise control
A pplies to: ve hicles with Audi adaptive cruise contro l
Fig. 115 Selector lever
Requirement: adaptive cruise control must be
switched on.
Overriding cruise control
.. To accelerate manually, pull the lever toward
you into position @and hold it there or press
the accelerator pedal. The message
ACC: over­
ride
appears .
.. To resume cruise control, release the lever or
take your foot off the acce lerator pedal.
Canceling cruise control while driving
.. Move the lever into position @. The message
ACC: standby appears . Or
.. Press the brake pedal.
ll Th is is not ava ilab le in some coun tries.
Assistance systems
.. To resume the stored speed, move the lever in-
to position @.
Automatic transmission: canceling cruise
control when stopped
.. Push the lever away from you into position @.
The message
ACC: standby appears.
.. To resume cruise control, press the brake peda l
and pull the lever toward you into position @.
A WARNING
It is dangerous to activate cruise control and
resume the stored speed when the current
road, traffic or weather cond itions do not per­
mit this . This increases the risk of an accident.
Setting the distance
App lies to: vehicles wit h Audi adapt ive cr uise control
,
0
Fig. 116 Operating lever: setting the distance
.,. Tap the switch to display the current set dis­
tance
qfig . 116.
.,. To increase or reduce the d istance in incre­
ments, tap the switch upward/downward
again. The distance between the two vehicles
w ill change in the instrument cluster display.
When approaching a vehicle driving ahead, the
adaptive cruise control system brakes to match
that vehicle's speed and then adjusts to the set
distance. If the vehicle driving ahead accelerates,
then the adaptive cruise control will a lso acce ler­
ate up to the speed that you have set .
T he higher the speed, the greater the distance
¢.& .The Distance 3 setting is recommended .
113

a co .... N ,....
N .... 0 0
3 co
(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 Facility check their func­
tion .
(D 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.
Audi pre sense city
Description
Applies to: vehicles with 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 speeds of approximately 6 mph (10 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 poss ible at speeds
up to 50 mph (85 km/h).
Warnings
Applies to: vehicles with Audi pre sense city
The system recognizes various dangerous s itua­
tions. The
early warning occurs if:
- a vehicle driving ahead brakes suddenly,
- your own vehicle approaches a significantly
slower vehicle or stationary veh icle in the direc­
t ion of travel.
- a pedestrian is standing in the lane or is moving
i nto the lane .
When this warning occurs, it may only be possi­ ble to avoid a collision by swerving or braking
strongly. The message
Audi pre sense .
Assistance systems
¢page 121, fig. 122 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 imp ending colli­
sion . If you do not react to the acute warning, pre
sense city can brake to the point of complete de­
celeration within the limits of the system . T his
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* .
- Inflating the side bolsters* on the seat back-
rest.
Audi drive select*: the function is not act ive 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 coll is ion 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 dep loy 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 anima ls,
crossing or oncoming vehicles, objects such
as bars, railings or railcars, and objects that
are difficult to
detect ¢ A in General infor­
mation on page 109 .
-In trailer mode, the braking behavior of the
tra iler can be d ifferent than usual during au­
tomatic braking.
A WARNING
-Pre sense city may be restricted or not availa-
ble in the following example situations:
- in heavy fog, ra in, spray or snow
~
123

Assistance systems
-when there are visual obstr uctions, such as
glare, reflections or variations in light
- when it is dark
- if the camera window or the windshie ld is
dirty, iced over, damaged or covered
- when driving on snow, ice or loose ground
- in curves
- if the ESC was restricted or switched off
- when towing a tra iler
- when the driver's seat belt is unfastened
- up to ten seconds after switching on the ig-
nition
(D Note
Impacts or damage to the camera mount on
the windshield can disp lace the sensor . Pre
sense city can be impa ired by this. Have an au­
thorized Audi dealer or authorized Aud i Serv­
ice Facility check the ir funct ion.
{D) 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 transport ing to reduce
the r isk of damage or injury.
- Specific pre sense city funct ions sw itch off
when the ESC is limited or switched
off
¢ page 147 or the hill descent assist* is
switched on
¢page 148.
-When there is a malfunction in the camera,
the pre sense city funct ions also switch off.
Settings in the
Infotainment system
A pp lies to: ve hicles w ith Audi p re se nse
.,. Select in the Infotainment system: IMENU I but­
ton
> Vehicle > left control button > Driver as­
sistance
> Audi pre sense.
Turn on/off Audi pre sense
-the pre sense func­
tions can be turned on and
off.
124
If the system is switched off, it switches on again
automatica lly once the ignition is switched on
again.
Early warning -the early warning can be switch­
ed
off or the pre sense city/front warning point
can be set
( Early /Medium /Late ).
Set the warning time for the early warning to
Early at first . If this causes undesi red early warn­
ings to appear, then set the warning time to
Me­
dium .
The Late warning time should only be set
i n spec ial circumstances, for example, when driv­
i ng with a very dynamic style.
(D Tips
Your settings are automatically stored and as ­
signed to the remote control key being used.
Messages
Applies to: vehicles wi th Audi pre sense
II Audi pre sense: malfunction! Please contact
Service
This message appears when the pre sense func­
tion is affected . For example, th is could be
ca used by a faulty sensor. Drive to an authorized
Audi dealer or authorized Audi Service Facility im­ mediately to have the malfunction corrected.
II 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
sensors and the area around the camera
¢ page 109, fig . 108 or ¢page 129, fig. 130 .
II Audi pre sense: currently restricted. Towing
mode
For vehicles wi th a trailer hitch installed at the
factory, the pre sense rear functions switch
off
when the electrical connector at the socket is
plugged in. There is no guarantee the functions
will switch
off when using a retrofitted trailer
hitch.
II Audi pre sense: currently restricted

detected and classified as crit ical. 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 If the d isplay in a mirror blinks brightly when you
activate a turn signal, side assist is
warning you
about detected vehicles that it has classified as
critical. If this happens, check traffic by gla nc ing
in the exterior m irrors and over your shoulder
c::> .&. in General information on page 130 .
Applies to: vehicles with active lane assist : the
d isplay i n the mirror can also blink if you have not
act ivated a turn signal: if you are app roaching a
detected lane marker line and it appears you will
be leaving the lane, side assist will warn you
about detected vehicles that it ha s classified as
critical.
(D Tips
You can ad just the brightness on of the dis ­
play on the rearview mirror
c::;, page 130 .
General information
Applies to: vehicles with Audi side assist
®
®
©
Fig. 129 Drivi ng situat ion s
Assistance systems
0
r AUD I
• •
Fig. 130 Rear of the veh icle: pos it ion of th e se nso rs
S id e assist functions at speeds above approxi­
mately 9 mph (15 km/h).
@ Vehicles that are approaching
In certain cases, a vehicle will be classified as
critical for a lane change even if it is still some ­
what far away . The faster a vehicle approaches,
the sooner the display in the exterior m irror will
turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exter ior mirror if they are classified as cr itical for
a lane change . A ll vehicles detected by side assist
are ind icated by the time they enter your "blind
spot" , at the latest .
© Vehicles you are passing
If you s lowly pass a veh icle that s ide assist has
detected (the difference in speed between the
vehicle and your vehicle is less than approximate­
ly 9 mph ( 15 km/h)) , the disp lay in the exter ior
mirror turns on as soon as the vehicle en ters your
blind spot.
The display w ill not turn on if you quickly pass a
vehicle that side assist has detected (the differ­
ence in speed is greater than approximately 9
mph (15 km/h)) .
Functional limitations
T he radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width. In some situations, the display
in the exterior mirror may turn on even though
there is no vehicle located in the area that is criti-
cal for a lane change. For example :
..,.
129

Ass is tan ce sys tems
-If the lanes are narrow or if your are driving on
the edge of your lane. If this is the case, the system may have detected a vehicle in another
lane that is
not adjacent to your current lane.
-If you are driving through a curve . Side assist
may react to a vehicle that is in the same lane
or one lane over from the adjacent lane.
-If side assist reacts to other objects (such as
roadside structures like guard rails).
- In poor weather condit ions . The side assist
funct ions are limited.
Do not cover the radar
sensors ¢ fig. 130 with
stickers, deposits, bicycle wheels or other ob­
jects, because this will impair the function. Do
not use side assist when towing a trailer. For in­
formation on cleaning,
see¢ page 354 .
A WARNING
-Always pay attention to traffic and to the
area around your vehicle. Side assist cannot
replace a dr iver's attention . The driver alone
is a lways responsible for lane changes and
similar d riving maneuvers.
-In some situat ions, the system may not
function or its funct ion may be limited. For
example :
-If vehicles are approach ing or being left
behind very quickly. The display may not
turn on in t ime .
-In poor weather conditions such as heavy
rain, snow or heavy mist.
-On very wide lanes, in tight curves, or if
there is a rise in the road surface. Vehicles in the adjacent lane may not be detected because they are outs ide of the sensor
range .
(D Note
The sensors can be displaced by impacts or
damage to the bumper, whee l housing and
underbody. Th is can impa ir the system. Have
an authorized A udi dealer or authorized Audi
Serv ice Facility check their function .
(i) Tips
-If the window glass in the driver's door or
front passenger's door has been tinted, the
130
-
display in the exterior mirror may be incor­
rect.
-For an exp lanation on conform ity with the
FCC reg ulations in the United States and the
Industry Canada regulations, see
¢ page 386.
Switching on/off
App lies to: vehicles with A udi side ass ist
The system con be switched on/off in the Info­
tainment system .
If the system is activated, the displays in the ex­
terior mirrors wi ll turn on briefly when the igni­
tion is switched on .
.,. Select in the Infotainment system: IMENU! but­
ton
> V ehicl e > left control button > D riv er as·
s is tance
> Audi side a ssist. Off switches the
system off.
(D Tips
When yo u switch side assist on or off, the ex it
warning system activates or deact ivates
¢ page 131.
Setting the display brightness
App lies to: vehicles wit h Aud i side ass ist
The display brightness con be adjusted in the In ­
fotainment system.
.,. Select in the Infotainment system: IMENU ! but­
ton
> Veh icle > left control button > Dri ver as­
s ist ance
> Audi side a ssist.
The disp lay br igh tness adjusts au tomatically to
the brightness of the surroundings, both in the
information and in the warning stage. In very
dark or very bright surround ings, the automatic
adjustment will set the display to the minim um
or max imum level. In such cases, you may notice
no change when adjusting the br ightness, or the
c h ange may only be noticeable once the sur ­
r oundings change .
Adjust the br ightness to a leve l where the display
i n the information stage will not disrupt your
view ahead . If you change the br ightness, the dis-
play in the exterior mirror w ill briefly show the
.,.

Ass is tance sy stems
- The display brightness for the ex it warning
system cannot be adjusted.
- The system is not available when towing a
trailer.
Rear cross-traffic assist
A pp lies to: ve hicles w ith rea r cross-tra ffic ass ist
F ig. 1 33 Example d is play
F ig . 134 In fo ta in me nt system : re ar cro ss -tra ffic ass ist dis­
p lay
The rear cross -traffic assis t can warn the drive r of
a po tential collis ion with approaching cross -traf­
f ic when driv ing i n reverse . Within its limits, the
system monitors the areas beh ind and n ext to
the vehicle using the radar sensors when leaving
a park ing space
c::> page 129, fig. 130. Moving ob­
jec ts tha t are approach ing, such as cars, are de­
tected
c::> fig . 133 .
If the system detects cr itical cross traffic when
ba cking out of a parking space, it will react as fol­
lows :
-Visual indicator : an indicator appea rs in the In­
fotainment system display with a red arrow
symbol. The arrow points in the direction from
which the object is approach ing
c::> fig. 134 .
-Audible warning signal : a continuous tone may
sound as an additional indicator when driving in reverse .
132
-Automat ic brake acti vati on: a brief activation
of the brakes may also warn you of a potentia l
co llision w ith an approaching object .
Requirements for using the rear cross -traffic
a ss is t :
-The parking aid must be switched on
<=> pag e 136.
-Reverse gear must be engaged.
- The speed mus t not be higher th an approxi-
mate ly 9 mph (15 km/h) .
&_ WARNING
-The rear cross-traffic assist is an assist sys­
tem and cannot prevent a collision by itself.
The drive r must always intervene. The driver
is always responsible for braking at the cor­
rect t ime .
-Please note that the rear cross-traff ic assist
may activate the brakes unexpected ly. Se­
cure any cargo that you are transporting to
reduce the ris k of damage or injury .
-An add itiona l brake activation may be trig­
ge red w ith in 20 seconds after an automatic
brake activation .
-If there is an acoust ic warning signal from
the rea r cross-traffic assist, then the park­
ing system may no t warn you of detected
obs tacles under certain circumstances.
- The v iew of the radar sensors may be im­
pa ired by leaves, snow, heavy sp ray o r dirt .
C lean the area in front of the sensors
c::> page 129, fig. 130 .
&_ WARNING
The re ar cross- traffi c assist is subject to limi ­
tations and cannot warn yo u before every im­
pending collision:
- I f the ve hicle is too wide for the parking
space and covered by the neighboring
veh icles.
- People, such as cyclists, joggers, inline skat ­
ers and pedestrians, may not be detected
under certain circumstances.
- If you are in a paralle l parking space or diag ­
onal parking space .

a co .... N ..... N .... 0 0
3 co
(D Note
Also read the informat ion in c::> (D in General
information on page 130 .
@ Tips
-You can can ce l the au toma tic b rake activa ­
tion w ith increasing braki ng fo rce if you ap ­
p ly the brakes yourse lf or accelerate cons id­
erab ly.
-In some situations, rea r cross-traffic assist
may warn yo u even if there is no cross t raffic
i n a cr itical area, for examp le when back ing
i nto a parki ng space or maneuver ing.
-The rea r cross-traffic ass ist also switches of f
when you switch off the ESC.
-The rea r cross traffic assist switc hes on and
off thro ugh t he pa rking aid
c::>page 136.
-The system is not available when towin g a
trailer.
Messages
App lies to: ve hicles with Audi side assist
A message appears in the instrument cluster dis­
p lay if the s ide assist switches off automatically .
@t Audi side assist: malfunction! Please contact
Service
@t Audi side assist and exit warning : malfunc­
tion! Please contact Service
The system c annot guarantee th at it will detec t
ve hicl es co rrectly and i t has switched off. The
sensors have been moved o r are faul ty. Have the
system checked by an a uth orized Audi dea ler or
author ized Audi Service Facility soon.
@t Audi side a ssist: currently unavailable. Sen­
sor vision restricted due to surround ings . See
owner 's manual
at Audi side a ssis t and exit warning : currently
unavailable. Sensor vision restricted due to sur­ roundings
The rada r se nso r vis io n is impaire d. T he ar ea in
fr on t of the senso rs must no t be covered by b ike
ra ck s, st ick ers, leaves, snow or any othe r o bj ects.
C lea n the area i n front of the senso rs, if necessa ­
ry
c::> page 129, fig . 130 .
Assistance systems
@t Audi side assist : currently unavailable. See
owne r's manual
at Audi side assist and exit warning: currently
unavailable. See owner's manual
S id e assist ca nnot be sw itched on at this time be­
c a u se the re is a ma lfun ction ( for ex ample, the
ba ttery ch arge leve l may be too low).
@t Audi side assist: unavailable in towing mode
(it Audi side assist and exit warning: currently
unavailable. Towing mode
Sid e assist switches off automatically when the
electrica l connecto r in the factory-installed t rail­
er hitch is connected. There is no guarantee the
system will sw itch off when using a retrofitted
t railer h itch . Do not use side assist and the ex it
warning w hen tow ing a traile r.
111 Rear parking aid: obstacle detection restrict­
ed
T he rear cross-traffic ass ist is not available. E i­
t h er the ESC is sw itched off, or the rada r senso rs
may be cove red by a bike rack, sticke rs, leaves,
snow or other objects. Switc h the ESC on , or
clean the area in front of the senso rs if necessary
c::> pag e 129, fig . 130 . If thi s m essage continues
to be displayed, dr ive immedia tely to an author­
i z ed Audi de aler or author ized Audi Se rvice Facili­
ty to ha ve the mal fu ncti on re paire d.
Audi drive select
Introduction
Applies to : vehicles with Aud i drive se lect
Drive select makes it possib le to exper ience dif­
ferent types of ve hicle sett ings in one ve hicle .
T he driver can select
Offroad *, Comfort , Auto
and Dynamic mod es in the Info tainm ent system
t o swi tch b etwee n a sp orty and a comfo rtable
dr iv ing mo de, fo r ex ample . In t he
Individual
mode, the settings can be a djusted to you r per­
sona l p references . This makes it possible to com­
bine settings such as a sporty engine setting with
li ght steer ing.
133