2018 AUDI A4 sensor

_& WARNING
-Always take the vehicle key with you when
leaving the vehicle, even for a short period
of time . This applies particularly when chil­
dren remain in the vehicle . Otherwise chil­
dren could start the engine or operate e lec­
trical equipment (such as power windows),
which increases the risk of an accident . The
power windows continue to function until
the driver's door or front passenger's door
has been opened.
- Pay careful attent ion when closing the win­
dows . Pinching could cause serious injuries .
- When locking the vehicle from outside, the vehicle must be unoccupied since the win­
dows can no longer be opened in an emer­
gency .
@ Tips
You can still open and close the w indows for
approximately 10 minutes after turning the
ignition
off . The power windows do not switch
off until the driver's door or front passenger's
door has been opened.
Convenience opening/closing
Applies to: vehicles with convenience key
All of the windows and the roof* con be opened/
closed at the some time .
Convenience opening feature
.. Press and hold the CD button on the remote con­
trol key until all of the windows reach the de­
sired position and the
roof* is tilted open.
Convenience closing feature
.. Press the @ button on the remote control key
until the roof* is closed
c::> .&,, or
.. Touch the sensor* on the door handle until a ll
of the windows and the roof* are closed. Do not
place your hand in the door handle when doing
this.
Setting convenience opening in the
Infotainment system
.. Select in the Infotainment system: !MENUI but­
ton
> Vehicle > left control button > Vehicle
Open ing and closing
settings > Central locking > Long press to
open windows.
_& WARNING
- To reduce the r isk of injury, never close the
windows or the roof* carelessly or in an un­
controlled manner .
- For secur ity reasons, the windows and the
roof* can only be opened and closed with
the remote control key at a maximum dis­
tance of approx imately 6.5 feet (2 m) away
from the vehicle. Always pay attent ion when
using
the@ button to close the windows
and the roof* so that no one is pinched. The
closing process will stop immediately when
the@ button is released.
(D Tips
Applies to: vehicles with panorama glass roof:
the power sunshade also opens/closes when
opening/closing the roof.
Correcting power window malfunctions
You can reactivate the one-touch up/down func­
tion if it malfunctions.
"' Pull the power window switch up until the win­
dow is comple tely raised .
.. Release the switch and pull it up again for at
least one second.
Sliding/tilting sunroof
Operating
Applies to: vehicles with sliding/tilting sunroof
Fig. 43 Section of front head lin er: sliding/tilt ing sunroof
button
....
49

Lights and Vision
Lights and Vision
Exterior lighting
Switching the lights on and off
--- --------...... ~
I
Fig. 48 Instrument panel: light sw itch w ith buttons
Light switch ·ti :
Turn the light switch to the corresponding posi­
tion when the ignition is switched on.
;oo: and the
selected pos ition turn on (except pos ition 0).
0 -The daytime r unning lights a utomat ica lly turn
on . In veh icles for certain markets, you can
switch the automatic daytime runn ing lights on
and off in the Infotai nment* system.
AUTO -T he head lights automatically adapt to the
surrounding brightness.
:oo: -Parking lights
io -Low beam headlights
Buttons
When you turn the light sw itch to the AUTO or
low beam headlight position
io, you can activate
the following functions:
jo -All weather lights. The headlights automati­
cally adjust so that there will be less glare, for
examp le when th e road surface is wet.
0$ -Rear fog lights
Automatic headlight range control system
Your veh icle is equipped wi th a n automatic head­
light r ange control system th at red uces glare fo r
oncoming tra ffic if the vehicle load changes. The
headlight range ad justs automatica lly.
54
Audi adaptive light
App lies to: vehicles wi th adaptive light
Adap tive ligh t provides be tter visibility when it i s
dark by adapting the ligh ts to the road conditions
based on speed, such as on expressways, r ura l
roads, at intersections, and in curves. The adap ­
tive light only functions when the light switch is
i n the AUTO position.
A WARNING
-Automatic headlig hts* are on ly intended to
assist the driver. They do not relieve the
driver of responsib il ity to check the head­
lights and to t urn them on manua lly ba sed
on t he curre nt ligh t and v is ibility conditions.
F or examp le, fog cannot be detec ted by the
light sensors. So always switch on the low
beams under these weather condit ions and
when dr iv ing in the dark
fD .
- The rear fog lights shou ld only be turned on
in accordance w ith traffic regulations, to
prevent glare for traffic behind your vehicle.
- Always observe legal regulat ions when us­
ing the lighting systems desc ribe d.
{l) Tips
- Th e light sensor for the a utomat ic he ad ­
lights * is in the rearview mir ror mount. Do
not p lace any stickers in this area on the
w indshield.
- A warning tone will sound if yo u ope n the
door when the exte rior lights a re switched
on.
- On ly the front headlights turn on when t he
daytime running lights are switched on* . In
vehicles in certain markets, t he tail lights
w ill also t urn on.
- In cool or damp weather, the inside of the
head lights, t urn signa ls and ta il lig hts can
fog over due to the temperature difference between the inside and outside. They w ill
clear shortly afte r switching them on. This
does not affect the service life of t he light­
mg.

Lights and Vision
Ir.a Head light a ssista nt: malf unction! See own­
er' s manual
Drive to an a utho rized Aud i de aler or authorized
Aud i Serv ice Facility immediately to have the
malfunction corrected . You can still switch the
high beams on or off manually .
II Headlight assi stant : currently unavail able .
Camera view re stricted due to surroundings .
See owner's manual
The camera view is b lo cked , fo r example by a
s t icker o r debr is.
The sensor is located between the interior rear­
view mir ror and the windshield . Do not p lace any
stickers in th is area on the windshield .
_& WARNING
High beam assistant is only i ntended to assist
t he driver. The dr iver is still res ponsible for
cont ro lling the headlights and may need to
switch them on and off manually depend ing
on light and visib ility co nditions . It may be
necessary to ope rate them manua lly in s itua­
tions such as:
- In adve rse weathe r cond itions such as fog,
heavy ra in, b low ing snow or sp raying water .
- On roads where oncoming traffic may be
partia lly obscured, s uch as exp ressways .
- When there a re road users that do not have
s uf ficient lighting, s uch as bicyclers o r
vehicles with dirty ta il lamps.
- In tight curves and o n steep hills .
- In poorly lit areas .
- Wi th stro ng reflecto rs, such as s igns.
- If the area of the windsh ield near the senso r
is fogged ove r, dirty, i cy or covere d with a
st icker .
Adjusting the exterior lighting
The functions ar e adjust ed in the Infotainm ent
system.
• Se lect in the Infotainment system: I M ENU I but­
ton
> Vehi cle > left contro l button > Vehicle
setting s
> Exterior lighting .
56
Automatic headlights
You can adjus t the following se ttings in the Au ­
to-dimming high beam s
menu:
Activation time -you can adjust if the headlights
swi tch on
Early , Medium or Late accor ding to t he
sens itivity of t he lig ht sen sor .
Headlight assistant * -you can switch the high
bea m assis tant* on and off.
Entry/exit lighting
When it is dark, the Ent ry /exit lighting ill umi­
nates the area a round the vehicle when unlocking
the veh icle and after switch ing off the ig nition
and opening the dr ive r's door .
The
Entry /e xit lighting only works when it is
dark and the light sw itch is in the
AUTO posit ion.
Daytime running lights
USA models :
the daytime r unning lights can be
switch ed on/off . S elect
On or Off.
Canada models: this f unction canno t be sw itched
off. They activate automatically each time the ig­
nit ion is switched on.
Emergency flashers
-- - ---
] -~ ~-
-------
Fig. SO Ce nter conso le: emerge ncy flashe r bu tt o n
The emergen cy fl ashe rs m akes ot her d rivers
aware of your veh icle in dangerous situations.
• Press the ~ b utton to switch the emergency
flashe rs on or off .
Yo u can indicate a la ne change or a turn when the
eme rgency flashers are switched o n by using the
turn s ignal leve r. T he eme rgency f lashe rs stop
tempor arily .
ll-

Lights and Vision
-The automatic dimming mir rors do not dim
when the interior lighting is turned on or
the reverse gear is selected.
Sun visors
F ig. 55 Sun v isor
Sun visor
The sun v isors for the dr iver and front passenger
can be re leased from their mounts and turned to­
ward the doors
¢ fig. 55 (!).
They can a lso be moved back a nd forth length­
wise in this posit ion.
Vanity mirror
The mirror lighting* switches on when the cover
over the vanity mirror @opens .
Sunshade
Applies to: vehicles with sunshade
F ig. 56 Rear doo r: sunshade
Re ar door sunshade
• Pu ll the sunshade out and attach it to the re­
ta iner on the upper door
frame¢ fig. 56.
60
Windshield wipers
Switching the wipers on
Fig. 57 Wind shi eld wiper lever
F ig. 58 allroad: rea r w in dow wiper operation
Move the windshie ld wiper lever to the corre­
sponding posit ion:
@ -Windshield wipers off
(!)-Rain senso r mode. The w ind shield wipers
switch on once the vehicle speed exceeds approx­
i mately 2 mph (4 km/h) and it is raining . The
higher the sensitivity of the rain sensor that is set
(switch ® to the right), the earlier the wind­
shield wipers react to mo isture on the wind­
shield. You can deact ivate the ra in sensor mode
i n the Infotainment system, wh ich sw itches the
i nte rmittent mode on . To do this, se lect:
I MENU I
button > Vehicle > left contro l bu tton > Driver
a ss istance > Rain sen sor .
In inte rm it tent mode,
you can adjus t the interval time using the switch
®·
@ -Slow w iping
@ -Fast wip ing
@ -Sing le wipe. If you ho ld the lever in this posi­
tion longer, the wipers switch from slow wiping
to fast wiping.
.,.

a co .... N ..... N .... 0 0
3 co
®-Clean the windshield . The wipers wipe one
time after severa l seconds of driving to remove
water drop lets. You can switch this function off
by moving the lever to position ® within 10 sec­
onds of the afterwipe. The afterwipe function is
reactivated the next time you switch the ignition
on .
C lean the headlights*. The headlight washer sys­
tem" operates only when the low beam head­
lights are on . If you move the lever into position
@, the headlights will be cleaned at fixed inter­
va ls .
Applies to: allroad:
@ -Wiping the rear window.
T he number of wipes depends on the windsh ield
wiper movement .
The rear wiper automatically switches on when
the reverse gear is selected and the front wind­
shield wipers are on and running .
Applies to: allroad:
0 -Clean ing the rear win­
dow. The number of wipes depends on how long
the lever is held in position
(J).
A WARNING
-The rain sensor is only intended to assist the
dr iver . The driver may still be responsible
for manually sw itching the w ipers on based
on v is ibi lity conditions.
- The windshie ld may not be treated with wa­
ter-repelling windshield coating agents . Un­
favorable conditions, such 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 possible.
- Properly functioning windsh ield wiper
blades are required for a clear view and safe
driving
¢ page 62, Replacing wiper
blades.
(D Note
- If there is frost, make sure the windshie ld
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 wiper blades .
- The windshield wiper system must be
switched off ( lever in position 0) before us-
Lights and Vision
ing a car wash. This prevents the wipers
from switching on unintentionally and caus­ ing damage to the windsh ield wiper system .
(D Tips
- The windshie ld wipers switch off when the
ignition is switched off . You can activate the
windshield wipers after the ignition is
switched back on by moving the w indshield
wiper lever to any position.
- Worn or dirty windshie ld wiper blades resu lt
in streaking. Th is can affect the rain sensor
function . Check your windshield w iper
blades regularly .
- The washer fluid nozzles for the windshield
washer system are heated at low tempera­
tures when the ign ition is on .
- When stopping temporarily, such as
at a
traffic light, the speed of the windshield
w ipers automatically reduces by one level.
Cleaning the wiper blades
Clean the wiper b lades when you see w iper
streaks. Use a soft cloth and a glass cleaner.
Windshield wiper
.,. Place the windshield wiper arms in the service
position
¢ page 62.
.,. Fold the windsh ie ld wiper arms away from the
w indshie ld.
Rear window wiper
Applies to : all road
.,. Fold the wiper arm away from the rear window.
A WARNING
D irt y windshield wiper blades can impa ir vi­
sion, wh ich i ncreases the risk of an accident .
-
61

General information
Appl ies to: ve hicles with Audi adaptive cruise contro l
Fig. 108 Fro nt of the vehicle: sensors and video camera
The areas with the radar and ultrasonic sensors
and the video camera
c:> fig . 108 must not be cov ­
ered by stickers, deposits or any other objects, because this can inte rfere with the adaptive
cr uise control funct ion. For information on clean­
ing, see
c:> page 354 . The same app lies for any
modifications made in the front area.
In some d riving situations, the adaptive cru ise
control funct ion is restr icted:
- Vehicles can only be detected when they are within the sensor detection zones
c:> page 108,
fig. 107.
- The system has a limited abil ity to detect
vehicles that are a short distance ahead, off to
the side of your vehicle or moving into your
lane .
- Objects that are difficult to detect such as mo­
torcycles, vehicles with high ground clearan ce
or an overhanging load are detected late or not dete cted at all.
- When driving through curves
c:> page 110 .
-When the vehicle is stat ionary c:> page 110.
..&, WARNING
Always pay attent ion to the traffic aro und you
when adap tive cruise contro l is swi tched o n.
As the driver, you are s till responsible for your
own speed and the distance to other vehicles .
The adaptive cruise control is used to assist
you. The driver must a lways take action to
avoid a collision. The driver is a lways responsi­
ble for brak ing at the correct time.
A ss is ta nce syst ems
-For safety reasons, do not use adaptive
cru ise 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 r isk of an ac­
cident.
- Sw itch adaptive cruise control off tempora­
rily when dr iv ing in turning lanes, on ex­
p ressway ex its (except if predictive con trol
is switched on) or in const ruct ion zones.
This prevents the vehicle from acce lerating
to the stored speed when in these situa­
tions.
- The adaptive cruise contro l 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 cr uise control does not respond to
peop le, animals, or crossing or oncoming
objects.
- The funct ion 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
the ir
f u nct ion.
(D Tips
For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regu lations, see
c:> page 38 6.
109

Assistance systems
Distance indicator and
distance warning
Description
Applies to: vehicles with Aud i adapt ive cruise control
F ig. 12 1 In stru ment cl uste r: dis tance indica tor/wa rning
At speeds above 40 mph (65 km/h), this funct ion
measures the time betwee n the vehicle driv ing
ahead and s hows th is in the instrument cl uster
d isp lay¢ fig. 121 .
You can set a warning t hreshold between 0 .6 and
3.0 seconds . The. indicator light t urns on if
you fall be low the set d is tance.
Switching the distance indicator/warning on
and off
.. In the Infotainment system, selec t: I MENU !
button > Vehicle > left contro l button > Driver
assistance > Distance warning.
A WARNING
-Read an d follow th e warn ings on ¢.&. in
Gen eral inf orma tion on page 1 09.
-The driv er is always r espons ib le for a dhering
to the regulations applicable in that co un­
t ry .
{!) Tips
You may fall below he warn ing t hreshold
briefly whe n pass ing or when quickly ap­
proac hing a s low veh icle . T h er e is no wa rning
in this scen ario . A warn ing is gi ve n only if you
f al l b elow the war ning thr eshold f or an ex ­
t en ded pe rio d o f tim e.
118
Messages
Appl ies to: vehicles with Audi adaptive cruise control
ii ACC with traffic jam assist: unavailable . See
owner's manual
The sy stem cannot gu aran tee t hat i t will dete ct
vehicle s cor re ctl y an d it h as sw itched
off . The ra ­
dar sensors have shifted or are fau lty . D rive to an
aut ho rize d Audi dea ler o r a uth orized Audi Service
Facility immed iate ly to have the malfunct ion cor ­
r ected .
ii ACC with traffic jam assist: currently un­
available. See owner's manual
This mes sage ap pears if the ada ptive cruise con ­
t ro l canno t be activ ated, for example i f th e hood
is ope n.
ti ACC with traffic jam assist : currently un­
available. Sensor vision restricted due to sur­ roundings. See owner 's manual
This message ap pears if the radar se nsor v iew is
obstr ucted, for e xamp le by leaves, snow, heavy
s p ra y or dirt . Cle an the
se nso rs ¢ pa ge 1 09,
fi g. 108 .
ill ACC with traffic jam assist: currently un­
available. Grade too steep
T he road exceeds the maxim um poss ible g rade
for saf e operation . The systems cannot be sw itch ­
ed o n.
ill ACC with traffic jam assist: only available in
D, Sor M
Se lect t he D/S or M se lector lever position.
flJ ACC: available from 1st gear up
Manua l transmiss io n: ada ptive cr uise con trol
works in 1s t gear an d higher.
ti ACC: clutch pedal pressed
Manua l transmiss io n: pressing the clutc h pedal
l onger inte rrupts the cont rol.
IIJ ACC: note engine speed
Manu al transmissio n: this message appea rs if t he
d rive r ha s not shift ed up or down in t ime when
t he a dap tive cr uise co ntrol is b raking o r accele r-
at ing , ca usi ng the ve hicle to excee d or to not
.,.

a co .... N ,....
N .... 0 0
3 co
reach the perm itted eng ine speed. The adaptive
cr uise control switches off automatically and can­
not be switched back on.
II.I ACC with traffic jam a ssist : currently un­
available. Parking b rake applied
The systems sw itch off if yo u se t the pa rking
bra ke. The systems a re av ailab le aga in after you
release t he p arking bra ke.
llJ ACC w ith traffic jam assist: currently un­
available . Stabilization control (ESC) input
This message appears if the elect ronic stab iliza­
tion co ntro l (ESC) is tak ing action to stab ilize the
ve hicl e. Th e syste ms switch off in th is scenar io.
IIJ ACC w ith traffic jam assist: manual control!
This message appears if the veh icle rolls bac k
when sta rting on a slight incl ine , even though the
systems are active . P ress t he b rake pedal to pre­
ve nt the vehicle from rolling o r sta rt ing to move.
ll'J ACC with traffic jam assist: currently un­
available. Downhill assist activated
You cannot ac tiva te the sys tem w hen hill hold as ·
sist is ac tive.
iii ACC with traffic jam a ssist: manual control!
T his message appea rs if the driver does not take
over steer ing after mu ltip le dr iver intervent io n
reques ts and the system switches off. The vehicle
br akes unt il it is st atio nar y.
l!I Traffic jam assist: unavailable. See own er's
manual
T he system can no longer ensure that the 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 Service Facility if the ma lfu nc­
tion is con tinuous.
l!I Traffic jam assist: Please take over steering!
This message appears as soon as the system
stops d etecting steer ing activity when the system
limits are reached. Always keep yo ur hands on
the steering wheel so you ca n be ready to stee r at
any time .
ifl Traffic jam assist: currently unavailable .
Please fasten seat belt
Assistance systems
T he system switches off when the drive r's safety
belt is unfastened .
fl ACC: efficiency assist not available in this
country
T he ada ptation to speed lim its and routes ahead
i s not available in th is co unt ry .
llJ ACC: predictive control currently unavaila ­
ble. 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 autho r­
ized Audi dea ler or author ized Audi Service Facili­
ty if the malfunc tion is con tinuous .
Distance warning: malfunct ion! Please contact
Serv ice
T he system cannot gua rantee that it will detect
vehicl es cor rect ly and it has switched off . T he ra ­
dar sensors have shifted or are fa ulty . D rive to an
authorized Aud i dea le r or aut hori zed Audi Serv ice
Facility immed iate ly to have the malfu nction cor­
r ec ted .
Distance warning: currently unavailable. Sensor
view restricted due to surroundings . See own­
er 's manual
This message appears if the rada r senso r view is
obstructed, for examp le by leaves, snow, heavy
spray or dirt. Clean the sensors
c::, page 109,
fig. 108 .
Distance warning: currently unavailable. See
owner's manual
T his messa ge appears if the system has a tempo ­
rary fail ure. If this occurs mu ltip le t imes, drive to
an a uth o rized Aud i dea le r or a uth orized Audi
Se rvice Facility immed iate ly to have the ma lfunc­
t ion co rrected.
ACC : Please fasten seat belt
T he sy stem is no t complete ly ava ilable if the dr iv­
er's se at bel t is unfas tene d.
Stationary object ahead
.,..
119