2017 AUDI A4 sensor

Lights and Vision
Lights and Vision
Exterior lighting
Switching the lights on and off
--- --------...... ~
Fig. 45 Instrument panel : lig ht sw it c h with all we ath er
li gh ts
Light switch ·t:/.. ·
I
Tu rn the switch to the corresponding posi tion .
When the lights are sw itched on, the
:o o:c symbo l
turns on .
0 - lights are off (in some markets, the daytime running lights are switched on when the ignition
is switched on.)
- USA mode ls: the daytime running lights switch
on automatically when the ignition is sw itched
on and the light switch is in the
O posit ion or
the
AUTO position (on ly in daylight) . The Da y­
time running lights can be switched on and off
in the Infotainment system ¢
page 52, ¢ .&..
-Canada mo del s: the dayt ime ru nning ligh ts
switch on au tomatically when the igni tion is
switched on and the light swi tch is in the
0 , :oo:
or the AU TO position (only in daylight) ¢ .&. .
AUTO -automa tic headl igh ts switch on and off
depending on br igh tness , for example in tw ilight,
du ring rain or in tunne ls.
;o o: -Pa rking lights
~D -Low beam headlights
,;;iiP -All weather lights
0$ -Rear fog lights
50
All weather lights
The front lights a re adjusted au toma tically so
that there is less g lare fo r the d river from his o r
her ow n lights , fo r example when roads are wet .
Automatic dynamic headlight range control*
Your vehicle is equipped with a headlight range
contro l system so that there is les s glare fo r on­
com ing t raff ic if the vehicle load changes . Th e
headlight range also adjusts automatically when
braking and accelerat ing.
Static cornering light *
The static co rnering light may be available de­
pend ing on veh icle equipment and it only works
whe n the light swi tc h is in the AUTO position. The
cornering light switches on automatica lly at
spe eds up to approximately 44 mph (70 km/h) at
spec ific steering wheel ang les and at speeds up
to approximate ly 25 mph (40 km/h) when you
turn on a turn signal. The a rea to the side of the
vehicle is illuminated better when turni ng.
_& WARNING
- Automatic headlights are only intended to
assis t the driver. They do not relieve the
d river of respo nsib ility to chec k the he ad­
lights and to t urn them on m anu ally based
on t he cur re nt ligh t and v is ib ility condi tions.
F or e xamp le, fog cannot be detected by t he
light sensors . So always switch on the low
beams under these weather condit ions and
when dr iv ing in the dark
~D.
- The rear fog lights sho uld only be turned on
in accordance w ith traffic regulations, to
prevent glare for traffic behind your vehicle.
- Always observe lega l regulat ions when us­
ing the lighting systems desc ribed.
(D Tips
- The lig ht sensor for the a utomat ic head ­
lights is located in the rearview mi rror
mount. Do not p lace any st ic kers in this area
on the w indshield.
- Some exter ior light ing funct io ns can be ad­
justed
¢ page 52.

Lights and Vi sion
Switching the h igh beams on/off manually
If th e h igh beams did no t swi tch on/off automat ­
ically as expec ted, you may sw itch them on or off
manually instead :
~ To swi tch the hig h beams o n manually, tap th e
l ever forw ard @ . The
Bl in di cator lig ht turns
on .
~ To switc h the hig h beams off manually , pull the
l ever back @. T he headlight assistant is deacti ­
vated.
Operating the headlight flasher
~ P ull t he leve r towar d the rear @ to ope ra te the
headlight flashers when the headlight ass ist is
activated an d the high beams a re switched off.
The head light assistant rema ins active.
Messages in the instrument cluster display
r!/1 Audi adaptive light: malfunction! See own ­
er's manual
Headlight assist: malfunction! See owner' s
manual
Drive to an a uth o rized Aud i dea le r or authorized
Aud i Serv ice Facility immediately to have the
malfunct io n corrected. You can still sw itc h t he
h igh beams on or off ma nually.
Headlight assist: currently unavailable. Camera
view restricted due to surroundings. See own­
er' s manual
The camera view is blocked, for example by a
sticker o r debr is .
The senso r is locate d between the interior rear­
view mir ror and the win dshield. Do not place any
sticke rs in th is area on the windshield.
A WARNING
Headlight assistant is only intended to assist
t he driv er. The dr iver is still r esp onsible for
cont ro llin g th e headl igh ts a nd may ne ed to
switch them on an d off manu ally depe ndin g
o n lig ht a nd visib ility con dition s.
It m ay be
necess ary to ope ra te them manually in s itu a­
tions such as :
- In ad verse we ather conditi ons such as fo g,
h eavy r ain, b low in g snow or sp rayin g wa te r.
52
- On roads where oncomin g tra ffic may be
pa rtially obscured, such as expressways.
- W hen the re are roa d users that do not have
suff icient lighting, such as b icyclers or
veh icles with dirty tail lamps.
- In tig ht curves an d on steep h ills.
- In poorly li t areas.
- Wi th st ro ng ref le ctor s, such as s igns .
- If th e area of the w inds hield ne ar the sensor
is fogged over, di rty, icy or covered with a
s tick er.
Adjusting the exterior lighting
Th e functions are adjust ed in th e Infotainment
sys tem .
~ Select in the Infotainment system : IMENU! but­
t on
> Vehicle > left cont rol b utton > Vehicle
settings > Exterior lighting .
Automat ic headlights
You can adjust the following sett ings in the Au­
tomatic headlights
men u:
Acti vation time -you can adjust if the headlights
switch on
Early , Med or Late accord ing to the
sensit ivity of t he lig ht sensor.
Headlight assistant * -you can switch the hea d­
li ght assistant * on and off.
Entry/exit lighting
Whe n it is da rk , the Entry/exit lighting ill um i­
na tes the area a ro und t he vehi cle when unlo cki ng
the ve hicle an d after switc hing off the ig nitio n
and o pening the dr iver's door.
The
Entry/exit lighting only wo rks when i t is
d ar k and the light sw itch is in the
AUTO p osit io n.
Daytime running lights
USA models:
the dayti me r unning lig hts can be
swi tched on/off. Select
On or Off.
Canada models : this function ca nnot be switched
off . They act ivate automatically eac h time the ig ­
nit ion is switched on .

<( a, .... N ,....
N .... 0 0
3 a,
(!)-Rain sensor mode. The windshield wipers
switch on once the vehicle speed exceeds approx­ imately 2 mph (4 km/h) and it is ra ining. The
higher the sensitivity of the rain sensor that is set
(switch @ to the right), the earlier the wind­
shield wipers react to moisture on the wind ­
sh ield . You can deactivate the rain sensor mode
in the Infota inment system, which switches the
intermittent mode on. To do th is, select:
! MENU !
button > Vehicle > left control button > Dri ver
a ss is ta nc e
> Rain sen sor. In intermittent mode ,
you can adjust the interva l time using the switch
@ .
@ -slow wip ing
@ -fast wip ing
© -sing le wipe If you hold the lever in this posi ­
tion longer, the wipers switch from slow wiping
to fast w iping.
® -clean the windsh ie ld The wipers wipe one
time after several seconds of dr iving to remove
water droplets. You can switch this function off
by moving the lever to position ® within
10 sec­
onds of the after-wipe . The after-wipe function is
react ivated the next time you switch the ign ition
on.
C leaning the headlights*. The headlight washer
system* operates only when the low beam head­ lights are sw itched on . If you move the lever into
position @, the headlights will be cleaned at
fixed intervals.
A WARNING
- T he rain sensor is only intended to assist the
driver. The driver may still be responsible
for manually switching the w ipers on based
on v is ibility conditions.
- The w indshie ld may not be treated with wa­
ter -repelling windshield coating agents. Un­
favorable conditions, s uch as wetness, dark­
ness or low sun, can result in increased
glare, which increases the risk of an acc i­
dent . Wiper blade chatter is also poss ible.
- Properly functioning windsh ield wiper
blades are required for a clear view and safe
dr iv ing to red uce the risk of an accident
Light s and Vision
c::> page 58, Changing windshield wiper
blades.
@ Note
- If there is frost, make sure the windshield
wiper blades are not frozen to the wind­
shield. Switching on the windshield wipers
when the blades are frozen to the wind­
shield can damage the w iper blades.
- Prior to using a car wash, the windshield
wiper system must be sw itched off (lever in
position
0). This prevents the wipers from
switching on unintentionally and caus ing
damage to the windsh ield wiper system.
@ Tips
- The windshield wipers switch off when the
ign ition is switched off. You can activate the
w indshield wipers after the ignition is
switched back on by moving the w indshield
w iper lever to any position.
- Wor n or dirty w indshie ld w iper blades resu lt
in st reaking. T his can affect the rain senso r
function. Check your windshield wiper
blades reg ularly.
- The washer fluid nozz les for the windshield
washer system are heated a t low tempera­
tures when the ignition is on .
- Whe n stopping tempo rar ily, such as at a
t raffic lig ht, the speed of the windshield
wipers automatically reduces by one level.
Cleaning windshield wiper blades
Clean the wiper b lades when you see wiper
streaks. Use a soft cloth and a g lass cleaner.
Wind shi eld wiper
... Place t he w indsh ie ld w iper arms in the service
position
c::> page 58 .
... Fold the windshie ld wiper arms away from the
windshie ld.
A WARNING
D irty windshie ld wiper blades can impa ir vi­
sion, wh ic h increases the risk of an accident.
57

also start driving again automatically under cer­
tain conditions
c!;> page 100.
In traffic jams or slow-moving traffic, congestion
assist can assist the driver¢
page 104 .
Which functions can be controlled?
When you switch adaptive cruise control on, you
can set the current speed as the "control speed "
c!;> page 98, Switching on/off.
When driving, you can stop cruise control
c!;> page 100 or change the speed ¢ page 99 at
any time .
You can also set the dist ance to the vehicle d riv­
ing ahead and set the driving mode of the adap ­
tive cruise control¢
page 101 .
General information
Appl ies to: ve hicles with Audi adaptive cruise co ntro l
Fig. 90 Fro nt o f th e ve hicle : sensor s and video c amer a
The areas wi th the radar and ul trasonic senso rs
and the video camera¢
fig. 90 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, refer to¢
page 337. The same applies for
any modifications made in the front area .
In some driving situations , the adaptive cruise
control function is restricted:
- Vehicle s can only be detected when they are
within the sensor detection zones
¢ page 96,
fig . 89 .
-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 .
Assist
-Objects that are difficult to detect such as mo­
torcycles, v ehicles with high ground clearance
or an overhanging load are detected late or not
detected at all.
- When driving through curv es
c!;> pag e 98.
- When the vehicle is stationary ¢ page 98.
A 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 .
- 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.
~
97

Assist
(D Note
The sensors can be displaced by impacts or
damage to the bumper , whee l housing and
underbody. This can impair the adaptive
cruise control. Have an authorized Audi dea ler
or authorized Audi Service Fac ility check their
function .
In curves
Applies to: vehicles with Audi adaptive cruise control
Fig . 9 1 Exa mple: drivin g in to a curve
When driving into a curve<=> fig. 91 and ou t of a
curve, the adaptive cruise control may react to a
veh icle in the neighboring lane and apply the
brakes . You can prevent that by pressing the ac­
celerator pedal b rief ly.
Stationary vehicles
Applies to : vehicles with Aud i adaptive cruise contro l
Fig. 92 Example: vehicl e chang ing lane s and sta tiona ry ve ­
hi cle
Adaptive cruise control can react to a limited ex­
tent to stationary vehicles
c:> fig . 92, as long as
you are driving slow er than SO km/h and the sys­
tem classifies as possible passing maneuver as
low . For example, if a vehicle that was already
detected @turns or changes lanes, the adaptive
98
cruise contro l reacts to the stationary vehicle
ahead of it@ .
Switching on/off
Applies to: vehicles with Audi adaptive cruise control
Fig. 93 Operating lever : sw itc hin g on and off
Fig. 94 Inst rument cluster : adap tive cr uise cont rol
You can set any speed between 20 and 9S mph
(30 and lSO km/h).
Indicator lights and messages in the instrument
cluster display inform you about the cu rrent sit­
uation and setting .
An add itional indicator appears in the Head-up
display *.
Switching adaptive cruise control on
.. Pull the lever toward you into position (D
c=> fig. 93. ACC: standby appears in the display.
Saving the speed and activating regulation
.. To store the current speed, press the ISE TI but­
ton
c:> fig . 93 . The stored speed is shown in the
speedometer in the LED line@ and appears
briefly in the status line
@ c:> fig. 94.
.. To activate the regulation while sta tionary, also
press the brake pedal. .,.

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

<( 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