2018 AUDI A5 COUPE brake sensor

Assistance systems
General information
Applies to: ve hicles w ith Aud i adapt ive cruise co ntro l
Fig. 112 Fro nt of th e ve hicle: senso rs an d video camera
The areas with the radar and ultrasonic sensors
and the video camera ¢
fig. 112 must not be cov ­
ered by stickers, deposits or any other objects ,
because this can interfere with the adaptive
cruise control function. For information on clean­
ing, see
c::> page 362 . The same applies for any
modifications made in the front area .
In some driving situations , the adaptive cruise
control function is restricted :
-Vehicles can only be detected when they are
within the sensor detection zones
<:;> page 113,
fig. 111 .
-The system has a limited ability to detect
vehicles that are a short distance ahead, off to
the side of your vehicle or moving into your
lane.
-Objects that are difficu lt to detect such as mo­
torcycles, vehicles with high ground clearance
or an overhanging load are detected late or not
detected at all.
-When driving through curves
c::>page 115 .
-When the vehicle is stationary <:;> page 115.
_& WARNING
Always pay attention to the traffic around you
when adaptive cruise control is switched on.
As the driver, you are still responsible for your
own speed and the distance to other vehicles.
The adaptive cruise control is used to assist
you. The driver must always take action to
avoid a collision. The driver is always responsi­
ble for braking at the correct time.
114
-For safety reasons, do not use adaptive
cruise control when the road surface is in
poor condition and/or in bad weather condi­
tions (such as ice, fog, gravel, heavy rain and
hydroplaning) . Using the system under
these conditions increases the risk of an ac­
cident.
- Switch adaptive cruise control off tempora­
rily when driving in turning lanes, on ex­
pressway exits (except if predictive control
is switched on) or in construction zones.
This prevents the vehicle from accelerating
to the stored speed when in these situa­
tions.
-The adaptive cruise control system will not
brake by itself if you put your foot on the ac­
celerator pedal. Doing so can override the
speed and distance regulation.
-When approaching stationary obstacles
such as stopped traffic, adaptive cruise con­
trol will respond with limited function .
- Adaptive cruise control does not respond to
people, animals, or crossing or oncoming
objects.
-The function of the radar sensors can be af­
fected by reflective objects such as guard rails, the entrance to a tunnel, heavy rain or
ice .
(D Note
The sensors can be displaced by impacts or damage to the bumper, wheel housing and underbody. This can impair the adaptive
cruise control. Have an authorized Audi dealer
or authorized Audi Service Facility check their
funct ion.
@ Tips
For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see
c::> page 392.

Assistance systems
reach the pe rm it t ed eng ine s peed . The ad aptive
cr uise cont ro l switc hes off automatically an d ca n­
not be switc hed back on.
Ill ACC with traffic jam assist: currently un­
available. Parking brake applied
Th e systems sw it c h o ff if yo u set the p arking
b rak e. The sy st em s ar e av a ila ble ag a in a fter you
release the p arking brak e.
m'J ACC with traffic jam assist: currently un­
available . Stabilization control (ESC) input
This message appea rs if the electronic stab iliza­
tion co ntrol (E SC) is taki ng action to stab ilize t he
ve hicle . Th e sys tems sw itch off in th is scenar io .
m'J ACC with traffic jam assist: manual control!
This message appea rs if the veh icle rolls bac k
when sta rting on a slight incl ine, even thoug h the
systems are active. P ress the b rake pedal to pre­
ve nt the vehicle fr om rolling o r sta rt ing to move.
II ACC with traffic jam assist: currently un­
available . Downhill assist activated
Y o u can not a cti va te the sys tem whe n hill hold as·
sis t is ac tive .
Ill ACC with traffic jam assist: manual control!
This message appea rs if the dr iver does not take
over steer ing af ter mu ltiple dr iver in terve ntio n
reques ts a nd the sys tem switches off. The vehicle
b ra kes until it i s sta tiona ry.
I! Traffic jam assist: unavailable. See owner's
manual
The system can no longe r ensure that t he ve hicle
will stay in the lane and switches off. Have yo ur
ve hicle checked by an a uth orized Audi dea ler or
author ized Audi Se rvice Facility if the ma lfu nc­
t io n is con tinuous.
I! Traffic jam assist: Please take over steering!
This message appears as soon as the system
sto ps detecting steer ing activity whe n the system
lim its are reached. Always keep yo ur hands on
the stee rin g wheel so yo u ca n be ready to stee r at
a ny time.
II Traffic jam assist: currently unavailable .
Please fasten seat belt
124
T he sys tem swi tches off when t he dr ive r's safety
b elt is unfastened .
m'J ACC: efficiency assist not available in this
country
The ada ptati on to spee d lim its an d rou tes ahead
i s no t a vailable in this coun try.
ti.I ACC: predictive control currently unavaila ­
ble . See owner's manual
The adaptation to speed lim its and routes a head
switc hes off at speed limits under 20 mph
(30 km/ h).
The messa ge ca n also appear if the adaptation to
s p eed limits and ro utes ahead has a temporary
failu re. Have your ve hicle checked by an a uth o r­
i zed Audi dealer or author ized A udi Se rvice Facili­
ty if t he malfunc tion is con tinuo us.
Distance warning: malfunction! Please contact
Serv ice
The system ca nnot gua rantee t hat it will detect
vehicles correct ly and it has sw itched off . T he ra­
dar sensors have shifted or are fa ulty. D rive to an
aut horize d Aud i dea le r o r authorized Aud i Serv ice
Fac ility i mmed iate ly to have the ma lfu nction cor­
r ec ted .
Distance warning: currently unavailable. Sensor
view restricted due to surroundings. See own­
er's manual
This message ap pears if t he radar se nsor v iew is
o bstr ucte d, for examp le by leaves, s now, heavy
spray or dirt. Clean t he
se nsors¢ page 114,
fig. 112 .
Distance warning: currently unavailable. See
owner's manual
T his mess age app ears i f th e system h as a temp o­
r ary fai lure.
If this occurs m ultip le t imes, drive to
an a uthorized Audi dea le r or a uthorized Audi
Se rvice Facility immed iate ly to have the ma lfunc­
tion co rrecte d.
ACC: Please fasten seat belt
The sy stem is not com plete ly availabl e if the d riv­
e r's se at belt is unfa stene d.
Stationary object ahead

<( a, .... N ,....
N .... 0 \0
3 a,
This message appears if you would like to switch
the system on and there is a stationary object di­
rectly in front of your vehicle .
Door open
The system is not ava ilable when the door is
open.
Audi pre sense
Introduction
App lies to: vehicles with Audi pre sense
Within the limits of the system, the pre sense
functions can initiate measures in particularly
dangerous situations to protect the vehicle pas­
sengers and other road users.
- Due to the interlinking of various vehicle sys­
tems, critical driving situations can be detected by
pre sense basic and measures for preventa ­
t ive occupant protection are can be initiated .
- The
pre sense front system uses the data from
the adaptive cruise control* radar sensors and
the camera to calculate the probability of a col­
li sion. Within the limits of
the system, an im­
pending collision with vehicles can be detected
in both urban and rural speed ranges. In this
case, the system warns the driver visually,
acoustically and with a jerk on the brakes if nec­
essary. If needed, it can initiat e a partial or full
deceleration to reduce the collision speed or to
avoid the collision under certain circumstances .
I n conjunction with pre sense basic/rear, the
front safety belts are also revers ibly tensioned
when needed . The pre sense front is also active
when adapt ive cruise control* is switched off .
-Pre sense rear contains pre sense basic func­
tions. It uses the data from the side assist* ra­
dar sensors and calcu lates withi n the limits of
the system the probability of a rear end coll i­
sion with the vehicle beh ind you. Pre sense rear
is also active when side assist* is switched
off.
- Within the limits of the system, pre sense city
uses the camera data and can detect an im­
pending collision with vehicles and pedestrians.
In this case, the system warns the dr iver visual­
ly, acoustically and with a jerk on the brakes if
necessary. If needed, it can initiate a full decel­
eration to reduce the collision speed or to avoid
Assistance systems
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 in c:>&. in Gen­
eral information on page 114,
c:> &. in Gener­
al information on page 135.
(D Tips
- Certain pre sense functions switch off when driving in reverse.
- The pre sense functions may not be availa­ ble if there is a malfunction in the ESC sys­
tem or the airbag control module.
- Note that the reversible belt tensioner on
the front passenger's side deactivates when
the front passenger's airbag is deactivated .
- Switch the pre sense
off when you a re not
using public streets or when loading the ve­
hicle onto a vehicle carrier, tra in, sh ip or
other type of transportat ion. This can pre­
vent an undesired inte rvention from
the pre
sense system.
Audi pre sense basic
Description
Applies to : vehicles with Audi pre sense basic
The pre sense basic functions are activated at a
speed of approx imately 20 mph (30 km/h) or
higher .
The following functions can be triggered under certain conditions within the limits of the sys­
tem:
- Tensioning of the safety belts (for examp le,
during heavy braking): the front safety belts have reversible belt tensioners . If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger aga in .
- Closing the windows and sunroof* .
-
125

<( a, .... N ,....
N .... 0 \0
3 a,
your steering wheel ang le as long as you a re ac­
tively steer ing . Evasive steering support is availa­
ble at speeds between approximately 20 mph
(30 km/h) and 90 mph (150 km/h).
Tu rn as sist
When starting to drive a nd 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 tu rning
left or right (available in certain countries). The
braking intervention causes your vehicle to stay
in its lane.
A WARNING
- Pre sense front cannot overcome the laws of
physics . It is a system des igned to assist and
it cannot prevent a collision in every circum­
stance. The drive r must always i nte rvene.
T he driver is always responsib le for b raking
at the correct time. Do not let the increased
safety provided tempt you into taking risks .
This cou ld increase your risk of a collision .
- 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 cross ing the veh i­
cle's path or that are difficu lt to
detect¢ &
in General information on page 114 .
-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 collis ion risk .
@:) Note
The sensors can be displaced by impacts or
damage to the bumper, whee l housing and
underbody. Pre sense front can be impa ired
by this . H ave an autho rized Aud i dealer or au­
thorized Audi Service Fac ility check their func­
tion .
l) Th is is no t a va ilable in som e countries.
A ss ista nce sys te m s
{!) Tips
-You can cancel the braking with increasing
force that is initiated by the system by brak­
ing yourself, by acce lerating 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.
- Certa in pre sense front funct ions are switch­
ed off when the ESC is limited or switched
off
Q page 152.
Audi pre sense rear
Description
Appl ies to: vehicles with Aud i s ide ass ist
If the risk of a collision with a vehicl e a h ead is de ­
tected, the fo llowing functions can be triggered:
- Reversible tensioning of the front safety belts
at the corresponding speeds .
- Closing the windows and sun roof* .
- I nflat ing the side bolsters* on the seat back-
rest.
- Activating the emergency flashers with in-
creased frequency
l).
The message Audi pr e sense. ¢ page 126,
fig . 126
will warn you about the danger .
Audi drive select*: the function is not act ive de­
pending on the mode selected.
A WARNING
-~
- To reduce the r isk of an accident, please
note that the s ide ass ist* radar sensors do
not always detect every object.
- Pre sense rear does not react to people, ani­
mals or objects that are c rossing the vehi­
cle's path o r th at are d ifficul t to detect.
- Reflective objects such as guard ra ils, heavy
rain and ice ca n impair the function of the
radar sensors and the ability to detect a col-
lision risk.
~
127

Assistance systems
CJ) 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 Fac ility 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
A ppl ie s to: ve hicles w ith Aud i p re se nse c ity
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
SO 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 SO mph (85 km/h).
Warnings
A ppl ies to: ve hicles w ith Aud i p re sense c ity
The system recognizes various dangerous situa­
tions. The
early warning occurs if:
- a veh icle driving ahead brakes suddenly,
- your own vehicle approaches a significantly
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 avoid a collision by swerving or braking
strongly . The message
Audi pre sense.
128
¢ page 126, fig. 126 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 impending 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* .
- Inflating the s ide bolsters* on the seat back-
rest.
Audi drive select*: the function is not active de ­
pending on the mode selected .
&_ WARNING
- Pre sense city cannot overcome the laws of
phys ics.
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 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 animals,
crossing or oncoming vehicles, objects such
as bars, railings or railcars, and objects that
are difficult to detect
c:> &. in General infor­
mation on page 114.
-In trailer mode, the braking behavior of the
trailer can be d ifferent than usual during au­
tomatic braking.
&_ WARNING
Pre sense city may be restr icted or not ava ila­
b le in the following example situations:
- in heavy fog, rain, spray or snow

<( a, .... N ,....
N .... 0 \0
3 a,
-when there are visual obstructions, such as glare, reflections or var iations 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 trailer
-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 displace the sensor. Pre
sense city can be impaired by this. Have an au­
thorized Audi dealer or authorized Audi Serv­
ice Facility check the ir function.
-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 risk of damage or injury.
-Certain pre sense city funct ions are switch­
ed off when the ESC is limited or switched
off¢ page 152.
-When there is a malfunction in the camera,
the pre sense city functions also switch off.
Settings in the
Infotainment system
A ppl ies to: ve hicles with Audi pre sense
~ Se lect in the Infotainment system: !MENUI but­
ton
> Vehicle > left contro l button > Driver as ­
sistance> Audi pre sense.
Turn on /off Audi pre sense -
the pre sense func­
tions can be turned on and off.
If the system is switched off, it switches o n again
automatically once the ignition is sw itched on
again.
Assistance systems
Prewarning -the early warning can be switched
off or the pre sense city/front warning point can
be set
(Ea rly/Medium /Late ).
Set the warning t ime for the early warning to
Early at first. If this causes undesired ear ly warn ­
ings to appear, then set the warning time to
Me­
dium .
The Late warning time should on ly be set
in special circumstances, for example, when driv ­
ing 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 : v ehicles wi th Audi pre sense
IIJ Audi pre sense: malfunction! Please contact
Service
T his message appears when the pre sense func ­
tion is affected. For example, this 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 114, fig . 112 or ¢page 134, fig. 134 .
II Audi pre sense: currently restricted. Towing
mode
For vehicles with 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
This message appears if the ESC is restricted or
switched off, for example.
IJl,,
129

-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: ve hicles with rear c ross-tra ffic ass ist
F ig. 137 Example display
Fig. 138 Infotai nme nt system : rea r cross-t raffic ass ist dis­
p lay
The rear cross-traffic assist can warn the driver of
a po tential collis ion with approaching cross-traf­
fic when driving in reverse . Within its limits, the
system monitors the areas behind and next to
the vehicle using the radar sensors when leaving
a parking space
c:;, page 134, fig. 134. Moving ob­
jects that are approaching, such as cars, are de· tected
c:;, fig . 137 .
If the system detects critical cross traffic when
backing out of a parking space, it will react as fol­
l ows:
-Vi su al indicator : an indicator appears 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. 138.
~ - Aud ibl e w arning signal : a continuous tone may
sound as an add itional indicator when driving in
reverse.
A ss is ta nce syst ems
-Automat ic brak e acti vation : a brief activation
of the brakes may also warn you of a potential
col lision with an approaching object .
Requirements for using the rear cross -traffic
a ssi st :
-The parking aid m ust be switched on
r=;, page 141.
-Reve rse gear must be engaged.
-The speed must not be h igher than approx i-
mately 9 mph (15 km/h).
_& 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 respons ible for braking at the cor·
rect time.
-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 risk of damage or injury .
-An addit iona l brake activation may be trig­
gered w ith in 20 seconds after an automatic
brake activation .
-If there is an acoustic warn ing signal from
the rear c ross-traffic assist, then the park­
ing system may not warn you of detected
obstacles under certain circumstances.
-The v iew of the radar sensors may be im­
pa ired by leaves, snow, heavy sp ray o r dirt .
Clea n the area i n front of the sensors
¢page 134, fig. 134.
.8_ WARNING
The rear cross -traffi c assist is subjec t to limi­
tations and cannot warn yo u before every im­
pending coll ision:
-If the ve hicle is too wide for the par king
space and covered by the neighboring
vehicles.
-P eop le, such as cycl ists, joggers, inline skat ­
ers and pedestrians, may not be detected
under certain circumstances.
-I f you are in a parallel parking space or d iag ­
onal parking space .
137

Assistance systems
CJ) Note
Also read the informat ion in c:> (D in General
information on page 135 .
@ Tips
-You can can cel the automa tic brake activa ­
tion w ith increasing braking fo rce if you ap­
pl y the bra kes yourself or accelerate cons id­
e rab ly.
-In some s ituations, rea r cross -traffic assist
may warn you even if there is no cross t raffic
i n a critical a rea, for example w hen back ing
in to a parking space or ma neuver ing.
-The rea r cross-traffic assist also switches off
whe n yo u switc h off the ESC.
-The rea r cross traffic assist switches on and
off thro ugh the pa rking aid
<=:>page 141.
-T he system is not available whe n towin g a
trailer.
Messages
A ppl ies to : ve hicles w ith Audi side assis t
A message appears in the inst rument cl uster dis­
p lay if the s ide assist swi tches off automatically .
iii Audi side assist: malfunction! Please contact
Service
@i Audi side assist and exit warning: malfunc­
tion! Please contact Service
T he sys tem c an not guar antee th at it w ill detec t
ve hicl es co rrectly and it h as swit ched off. The
sensors h ave bee n moved o r are faul ty . H ave t he
system checked by an a uthorized Audi dea ler or
author ized Audi Se rvice Facility soon.
@i Audi side assist: currently unavailable. Sen­
sor vision restricted due to surroundings. See
owner 's manual
@i Audi side a ssist and exit warning : currently
unavailable. Sensor vision restricted due to sur­ roundings
T he radar senso r vis io n is i mp air ed . Th e ar ea in
fr on t of t he senso rs m ust n ot be covered by bik e
ra ck s, st ickers, leaves, snow or any othe r o bj ects.
Clea n the area in front of the sensors, if necessa ­
ry
c:> page 134, fig . 134 .
138
@i Audi side assist: currently unavailable. See
owne r's manual
@i Audi side assist and exit warning: currently
unavailable . See owner's manual
S ide assis t ca nnot be switched on at this ti me be­
ca use there is a ma lfu nction (fo r exa mple, the
b att ery ch arge level m ay be to o l ow).
@i Audi side assist: unavailable in tow ing mode
iii Audi side assist and exit warning: currently
unavailable. Towing mode
Si de assist switches off automatically when the
e lectrica l connecto r 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 w hen tow ing a tra ile r.
Iii Rear parking aid : obstacle detection restrict­
ed
The rear c ross-traffic ass ist is not available . E i­
ther t he ESC is sw itche d off, or the rada r senso rs
may be cove red by a bike rack, stic ke rs, leaves,
snow or other objects. Switch the ESC on, or clean the area in fron t of the se nso rs if necessa ry
c:> page 134, fig . 134 . If th is message con tinues
to be displayed, dr ive immedia tely to a n author­
iz ed Audi dealer or author ized A udi Se rvi ce Facili­
ty to h ave the m alfunc tion re paire d.
Audi drive select
Introduction
App lies to : vehicles wi th Audi drive se lect
D rive select makes it possib le to exper ience dif­
ferent types of veh icle sett ings in one veh icle.
The dr iver can select
Comfort , Auto and Dynamic
modes in t he In fo tainment system to sw itch b e­
t ween, for exa mple , a s porty an d a comfor table
d riv ing mode . In the
Individual mode, t he set ­
ti ngs c an be adjus ted to yo ur persona l prefe ren ­
ces . Thi s makes it possib le to comb ine settings
s uc h as a sporty e ngine setting wit h lig ht steer­
i ng .