belt AUDI S4 2018 Owners Manual

Table of content s
Media ... . ... ... .. .. ..... ... .. .. ...
227
Introduction . . . . . . . . . . . . . . . . . . . . . . . . 227
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Media drives . . . . . . . . . . . . . . . . . . . . . . . . 228
Bluetooth audio player . . . . . . . . . . . . . . . 230
W i- F i aud io player . . . . . . . . . . . . . . . . . . . 231
O nline med ia and Internet radio . . . . . . . . 232
Mu ltimedia connect io ns . . . . . . . . . . . . . . 233
P lay ing media . . . . . . . . . . . . . . . . . . . . . . . 236
Addit io nal sett ings . . . . . . . . . . . . . . . . . . 239
Supporte d media and file formats . . . . . . 242
Troubleshooting . . . . . . . . . . . . . . . . . . . . . 243
Audi smartphone interface ...... 246
Se tup ... .. .... ... . ...... ... .. .. ... 246
Operating . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Troubleshoot ing . . . . . . . . . . . . . . . . . . . . . 24 7
System settings . . . . . . . . . . . . . . . . . . 248
Setting the date and time . . . . . . . . . . . . . 248
MMI sett ings . . . . . . . . . . . . . . . . . . . . . . . 248
Connection manager . . . . . . . . . . . . . . . . . 249
System update . . . . . . . . . . . . . . . . . . . . . . 251
Sound settings . . . . . . . . . . . . . . . . . . . . . . 252
Volume sett ings . . . . . . . . . . . . . . . . . . . . . 252
Restart ing the M MI . . . . . . . . . . . . . . . . . . 253
Sof twa re license i nfo rm at ion 253
Safety first . . . . . . . . . . . . . . . . . . . . . . . 2 54
Driving safety . . . . . . . . . . . . . . . . . . . . 254
B asics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Correct passenger se ating positions . . . . . 255
D river's and front passenger 's footwell . . 2S8
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Storing cargo correctly . . . . . . . . . . . . . . . 259
Reporting Safety Defects . . . . . . . . . . . . . . 261
Safety belts . . . . . . . . . . . . . . . . . . . . . . 263
Gene ral information . . . . . . . . . . . . . . . . . 263
Why use safety belts? . . . . . . . . . . . . . . . . 264
Safety belts . . . . . . . . . . . . . . . . . . . . . . . . 266
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . 269
Airbag system .................... 271
Important information . . . . . . . . . . . . . . . 27 1
Front airbags ....................... 275
M on itor ing the Advan ced Airbag System . 283
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . 28 7
4
Side a irbags . . . . . . . . . . . . . . . . . . . . . . . . 289
Side curtain airbags . . . . . . . . . . . . . . . . . . 292
Child safety . . . . . . . . . . . . . . . . . . . . . . 295
Important information . . . . . . . . . . . . . . . 295
Child safety seats . . . . . . . . . . . . . . . . . . . . 301
Securing child safety seats . . . . . . . . . . . . 306
LATCH system (lower anchorages and
tethers for c hildren) . . . . . . . . . . . . . . . . . 309
Additional informat ion . . . . . . . . . . . . . . . 314
Maintenan ce and Care ........... 31S
Checking and Filling . . . . . . . . . . . . . 31S
Gasoline ........................... 315
D iesel fue l . . . . . . . . . . . . . . . . . . . . . . . . . 316
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7
Se lective cata lytic red uction (AdBlue/
DE F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 19
Emissions control systems . . . . . . . . . . . . 322
Engine compartment . . . . . . . . . . . . . . . . . 323
Engine o il . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Cooling system . . . . . . . . . . . . . . . . . . . . . . 329
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . 330
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Windshie ld washer system . . . . . . . . . . . . 332
Se rvice interva l display 333
Wheels ........ ................ ... 334
Whee ls and Tires . . . . . . . . . . . . . . . . . . . . 334
T ire p ressure mo nitoring system 351
Care and cleaning . . . . . . . . . . . . . . . . 354
Genera l information . . . . . . . . . . . . . . . . . 354
Car w ash es . . . . . . . . . . . . . . . . . . . . . . . . . 35 4
Cleaning an d care information . . . . . . . . . 355
Placing your vehicle out of service . . . . . . 3 59
Do It Yourself ... .. .. ........... .. 3 60
Emergency as sistance . . . . . . . . . . . 360
Genera l information . . . . . . . . . . . . . . . . . 360
Eq uipment . . . . . . . . . . . . . . . . . . . . . . . . . 360
Tire mobility kit . . . . . . . . . . . . . . . . . . . . . 361
Replacing a whee l . . . . . . . . . . . . . . . . . . . 363
Space-sav ing spare t ire . . . . . . . . . . . . . . . 367
Collaps ible spa re ti re . . . . . . . . . . . . . . . . . 367

Cockpit over view
Red indicator ligh ts
26
--------------
Central indicator light
¢page 25,
Aud i pre sense*
¢ page 120
USA model s:
Brake system ./
¢page28
Cana da m od els:
Brake system ./
¢ page28
USA models :
Electromechan ical parking brake
¢ page29
Canada models:
Electromechan ica l parking brake
¢page29
Cooling system
¢ page30
Engine oil pressure
¢ page 31
E ngine oil level
¢ page 31
Alter nator
¢ page30
Safety belt
¢page30
Electromechan ica l steering ./
¢page 150
Steering lock
¢ page 31
Engine start system
¢ page 31
Transmiss ion (automatic t ransm is ­
sion)
¢ page 96,
Clutch (manual transmission)
¢page32
Hood
¢ page32
Adapt ive cr uise control*./
¢ page 110
Traffic jam assist*
¢ page 116 Ad B
lue*
¢ page 319
Ad Bl ue*
¢ pag e 319
Yellow indi cator lights
--------------
Central indicator light
¢ page25
Electronic Stabi lization Control
( E SC)
¢ page32
Elec tronic Stab il izat io n Contro l
(ESC)
./
¢ page32
Electronic Stab ilizat ion Control
(ESC)
¢ page 147
Brake system
¢ page 33
USA models:
Ant i- lock braking system (ABS)./
¢ page32
Canad a model s:
Ant i-lock b raking system (ABS) ./
¢ page32
Safety systems ./
¢page32
USA mode ls:
Brake pads
¢ page33
Ca nad a model s:
Brake pads
¢ page 33
E lec tromechanical parking brake
¢ page29
Tire p ressure
¢ page352
Tire pressure
¢page 352
Engine contro l
¢page 33
Engine contro l (diesel engine)
¢ page 33

Cockpit over view
There is not enough braking force to hold the ve­
hicle in place . The brakes have overheated. The
veh icle cou ld ro ll away even on a small incline .
Ill (U SA mod els)/ lC@j (C an ad a model s) Parking
brake : applied
If th is message appears, press the brake pedal
fi rst a nd the n release the pa rk ing bra ke if neces­
sary.
II ( U SA model s)/ l(@j (Canada mo dels) Parking
brak e: emerg ency braking
The emergency braking function was triggered .
Please rele ase park ing b rake
Release the par king brake if t his message ap ­
pears.
Plea se pr ess brak e pedal to rel ease parking
brak e
To release the park ing brake, press the brake
pedal and press
the ~ button at the same time,
or start driv ing with hill start ass ist
9 page 89,
Starting to drive.
(D Tips
For add it ional information on the park ing
brake, see
9 page 88.
-L Cooling system
• Turn off engin e and che ck co ola nt level. See
o w ner 's manual
The coolant leve l is too low.
Do not cont inue driving and switch the engine
off . Check the coolant level
9 page 329.
- If the coolant level is too low, add coolant
9 page 329. On ly cont inue driving once the in­
dicator light turns off .
• Coolant t emper atu re: too high. Let e ngi ne
run with vehicle st ationar y
Let the eng ine run at id le for a few minutes to
coo l off, until the indicator light turns off .
- If the indicato r ligh t does not turn off, do not
contin ue driving the vehicle. See an au thorized
30
Audi dea ler or authorized Audi Service Facility
for assistance.
A WARNING
- Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of burns. Wait until you no longer see or hear
steam or coolant escaping .
- The engine compartment in any vehicle can
be a dange rous area . Stop the engine and
allow it to cool befo re working in the engine
compa rtment. Always follow the informa­
tion fo und in
9 page 323, Working in the
engine compartment .
(D Note
Do not continue driv ing if the . indicator
li ght turns on as this increases the risk of en­
gine damage.
~ Safety belt
The . indicator light stays on until the dr iver's
and front passenger's safety belts are fastened.
Above a certain speed, there will a lso be a warn­
i ng tone.
(D Tips
For additional informat ion on safety belts,
see
Q page 263.
0 Generator/Vehicle battery
If the . or(•) indicator light turns on, there is a
malfunction in the generator or the vehicle e lec­
trical system .
• Electrical sy stem: malfunction! Saf ely stop
v ehicle
Do not continue dr iving and switch the engine
off. See an authorized Audi dealer or autho rized
Audi Service Facility for assistance.
(•j Ele ctri cal system: m alfunc tion! Re sta rt not
po ssible. Plea se cont act Ser vice
The vehicle battery was disconnected from the
vehicle e lectr ica l system and will no longer

Increasing the size of the vehicle interior
Applies to: vehicles with fold ing backrests
The rear seat backrests can be folded for ward ei­
the r separately* or together .
Fig. 77 Back rest: release lever, securing knob and lock•
F ig. 78 Center backrest: folding in the center backrest
Folding the outer rear backr ests forward and
backward
.,.. Pull the release lever @¢ fig. 77 in the direc­
tion of the arrow and fo ld the backrest forward .
Let the backrest latch into the lowest position .
.,.. Fold the backrest back up aga in until it latches
or the red mark ing @ is no longer
vis ible ¢,&. .
Folding the center rear backrest forward and
backward
.,.. Pull on the upper re lease lever (D and fold the
backrest
forward @c::> fig. 78 .
.,.. Fold the backrest backward unt il it l ocks into
place.
When secured, the backrest can be locked © us­
ing the mechanical
key ¢ page 39 . This prevents
access into the luggage compartment from the
ve hicl e interio r. You can only e nlarge the luggage
compa rtme nt if the backr est is not loc ke d .
Seats and storag e
A WARNING
-~
-The backrest must be securely latched to
e nsu re the safety belt is protecting the rea r
seat pos itions .
- The bac krest must be securely latched so
objects cannot slide fo rwa rd out of the lug­
gage compartment during sudde n braking.
(D Note
- If you move the front seat back when the
rear seat backrest is fo lded fo rward, you
could damage the head restraints on the
rear seat .
- Move the rear head restrai nts down befo re
folding the rea r back rests forward
c::> page 67. Th is is espec ially true if the Rear
Sea t Enterta inment (RS E)* is ins talled, be­
cause it co uld be damaged.
- Ma ke sure the o ute r safety be lts are not
pinched or d am age d when fol ding the seat
up.
Increasing the size of the luggage
compartment
Applies to: vehicles with release lever in the luggage com·
partment
The rear seat backrests can b e folded forward ei­
ther separately* or together .
Fig. 7 9 Luggage co mpartme nt: re lease lever (example)
Folding the backre st fo rward
.,.. Pull the release leve r ¢fig. 79 in the direction
of th e arrow to fo ld the backrest forward.
.,.
71

you stop it. You also cannot lock the vehicle from
the outside .
Applies to: vehicles with au tomatic transm issions
Shift to P , otherwise vehicle can roll away.
Doors do not lock if gearshift is not in P
This message appears for safety reasons if the
selector lever is in the N position when you
sw itch the ignition off. Move the selector leve r to
the P position. Otherwise the vehicle is not pro­
tected from ro lling and it cannot be locked .
DJ Remote control key: hold back of key
against the designated area . See owner 's man­
ual
If the indicator light turns on and th is message
appears, there is a malfunction
q page 85 .
Applies to: vehicles with automatic transmissions
Shift to P before leaving car, otherwise vehicle
can roll away
This message appears if the driver's door is
opened while the ignition is switched on and the
transmission has not been shifted to the P posi­
tion . Sh ift the transmiss ion into the P position
and turn off the ignition if you are leaving the ve­
hicle . Otherwise the vehicle could roll. Also see
c::> page87 .
Starting the engine when there is a
malfunction
It may not be possible to start the engine under
certain circumstances, for example if the battery
in the vehicle key is drained, if interference is af­
fected the key or if there is a system malfunc ­
tion .
Fig. 94 Cente r console/ remote contro l key: starting t he
eng ine if there is a malfunc tion
Driving
Requirement: the message Remote control key:
hold back of key against the designated area .
See owner's manual
must display and the DJ i n­
dicator light must turn on.
.,. Place the remote control key on the location
shown in the illustration
y >l) c::> fig . 94.
Applies to: vehicles with manual transmission
.,. Press the clutch pedal.
Applies to: vehicles with automatic transmissions
• Press the brake pedal.
.. Press the !START ENGINE STOP ! button. The
engine will start.
.,. Drive to an authorized Audi dea ler or author­
ized Aud i Service Facility immediately to have
the malfunction corrected.
@ Tips
You can view the message again by pressing
the
I S TART ENGINE STOP I button.
Start/Stop system
Description
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fue l
economy and reduce CO2 emissions.
In Sta rt/Stop mode, the engine shuts off auto­
matically when the vehicle is stopped, such as at
a traffic light. The ignition remains switched on
during this stop phase . The engine wi ll restart
automatica lly when needed .
Th e Start/Stop system is a utomaticall y activated
as soon as the ignition is switched on.
Basic requirements for Start/Stop mode
-The driver's door must be closed .
-The driver's seat belt much be fastened.
- The hood must be closed.
- The vehicle must have driven faster than
2 mph
(3 km/h) since the last time it stopped .
- A trailer must not be hitched to the vehicle.
If you leave the vehicle during a stop phase, the
engine can be restarted within approximately 30
seconds if the following requi rements are met:
IJ>
85

Driving
-The driver's door must be closed, the driver's
safety belt must be fastened, and the brake peda l (automat ic transmission) or the clutch
pedal (manua l transmission) must be pressed.
Or:
-The driver's door must be closed, the brake
pedal (automat ic transmission) or the clutch
pedal (manua l transmission) must be pressed,
and a gear must be engaged.
(D Note
Always sw itch the Start/Stop system off when
driving through water
q page 85.
@ Tips
The engine stops shortly before the vehicle
comes to a stop
1) .
Stopping/starting the engine
Appl ies to: ve hicl es w ith Sta rt/Stop system
F ig . 95 Instrument cluste r: e ng ine sw itched off (stop
phase)
A ppl ies to: ve hicles w ith manu al transmiss ion
• When the vehicle is stat ionary, shift to neut ral
and release the clutch pedal. The eng ine will
switch off . The
II indicator light appears in the
information line at the bottom of the instru­
ment cluster d isp lay. The needle in the tachom­
eter also moves into the
R EADY position .
• The engine will resta rt if you press the clutch
pedal. The ind icator light turns off.
A ppl ies to: ve hicles w ith a uto mat ic t ra nsmi ssio ns
• B rake the vehicle to a stop . The engine stops
shortly before the vehicle comes to a stop or if
the ve hicle is stationary
l). Keep yo ur foot on
l) Ma rket -spe cifi c
86
the brake peda l. The II indica tor light appears
in the status line at the bottom of the instru ­
ment cluste r display. The need le in the tachom ­
eter also moves into the
READY1> posit ion.
• The engine starts again when you take your
foot off the brake pedal. The indicator light
turns off .
Additional information for automatic
transmissions
The eng ine stops in the P, N and D selector lever
pos itions.
If you se lect the R posit ion du ring a Stop phase,
the engine will start aga in.
Se lect the P position quickly to prevent the e n­
gine from starting u nintent ionally when shifting
through R .
You can determine for yourse lf if the engine wi ll
stop o r not by red ucing or inc reasing the amount
of force you use to press t he brake peda l. For ex­
amp le, if yo u only lightly press on the brake ped­
al in stop-and-go traffic or when turning, the en­
gine w ill not switch off when the vehicle is sta ­
tiona ry . A s soon as you press the b rake down
harde r, the engine wi ll swi tch off .
(0 Tips
-Press the brake peda l during a Stop phase
to keep the vehicle from rolling .
-The ignitio n will turn off if yo u press the
! S TART ENGINE STOPI butto n du ring a stop
phase. The needle in the tachomet er moves
into the
OFF position.
General information
App lies to: vehicles wi th Start/S top sys te m
The standard Start/Stop mode can be canceled
for various system-related reasons.
Engine does not switch off
Before and dur ing each stop phase, the system
checks if certain conditions have been met. If the
lilJ.

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.
.,..

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

Assistance systems
This message appears if you would like to switch
the system on and there is a stationary object di­
rectly in front of your veh icle.
Door open
The system is not ava ilable when the door is
open.
Audi pre sense
Introduction
A pp lies to: ve hicles w ith Audi p re se nse
W ithin the limits of the system, the pre sense
functions can initiate measures in particularly
dangerous situations to protect the veh icle pas­
sengers and other road users .
- Due to the interlinking of various vehicle sys­
tems, crit ical dr iving s ituations can be detected
by
pre sense basic and measures for preventa ­
tive occupant protection are can be initiated .
- The
pre sense front system uses the data from
the adapt ive cruise control* radar sensors and
the camera to calculate the probab ility of a col­
li sion. Withi n the limits of the system, an im­
pending collision with vehicles can be dete cted
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 initiate a partial or full
deceleration to reduce the co llision speed or to
avo id the collision under certain c ircumstances .
In conjunct ion with pre sense basic/rear, the
front safety belts are also revers ibly tensioned
when needed . The pre sense front is also active
whe n adapt ive cruise control* is swit ched off.
- Pre sense rear contains pre sense basic func­
tions. It uses the data from the side assist* ra­
dar sensors and calculates within the limits of
the system the probab ility of a rear end coll i­
s ion with the vehicle behind 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 driver 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
120
the collision under certa in circumstances . In
conjunction with pre sense basic/rear, the front
safety belts are also reversibly tensioned when
needed .
A WARNING
-
Read the general information inc> & in Gen-
eral information on page 109,
c> & in Gener­
al information on page 130.
(D Tips
- Certain pre sense funct ions sw itch off when
dr iving in reverse.
- The pre sense functions may not be availa­
ble if there is a malfunct ion in the ESC sys­
tem or the a irbag 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 are not
using public streets or when loading the ve­
hicle onto a vehicle carrier, tra in, sh ip or
other type of transportation. This can pre­
vent an undesired intervention from
the pre
sense system.
Audi pre sense basic
Description
App lies to : vehicles wi th Audi pre sense basic
The pre sense bas ic functions are activated at a
speed of approx imately 20 mph (30 km/h) or
higher .
The following functions can be triggered under certain condit ions w ith in the lim its of the sys­
tem:
- Tensioning of the safety belts (for examp le,
during heavy brak ing): the front safety belts
have reversib le be lt tens ioners. If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger again.
- Closing the windows and sunroof* .
-

-Activating the emergency flashers l).
The message Audi pre sense . ¢ page 121,
fig. 122 will warn you abo ut the danger.
Aud i drive select*: the trigger t imes are adjusted
depending on the mode selected.
Audi pre sense front
Description
Applies to: veh icles with Audi adaptive cruise control
Within the limits of the system, pre sense front
can warn you of impending collisions and initiate
the corresponding braking maneuvers or the sup­ porting measures when avoiding a collision .
If detected in time, the system can rank the dan­
gerous situation as critical if a vehicle driving
ahead brakes suddenly, if your own vehicle is ap­
proaching a significantly slower vehicle at high
speed or when there is an oncoming vehicle dur­
in g a turning maneuver .
If detection is not possible, then pre sense front
does not react .
Warnings
Applies to: ve hicles with Audi adaptive cruise control
Fig. 122 In strument cluste r: approac h warning
General information
The system recognizes various dangerous situa­
tions . The
early warning occurs if:
-a vehicle driving ahead brakes suddenly,
-your own vehicle approaches a significantly
a s lower vehicle or stationary vehicle in the direc-co
;::; tion of travel. ,....
N .... 0 0
3 1) This is not availa ble in some co untrie s. co
Assistance systems
When this warning occurs, it may only be possi­
ble to avoid a collision by swerving or braking
strongly. The message
Audi pre sense.
¢ fig. 122 and a warning tone will warn you
about the danger .
If you do not react enough or not at all to a dan­
gerous situation that was detected by the sys­
tem, pre sense front provides assistance by ap­ plying the brakes .
If a collision is imminent, the system will first
provide an
acute warning by braking sharply. You
will also warned by an indicator in the instrument
cluster
display¢ fig. 122. If you do not react to
the acute warning, pre sense front can brake with i ncreasing fo rce within the limits of the
system
1>. This reduces the vehicle speed in the
event of a collision. At low vehicle speeds, pre
sense front can in itiate a complete deceleration
shortly before a collision with a vehicle driving
ahead
l). If pre sense front determines that you
are not braking strongly enough when a collision
is imminent, it can increase the braking force.
T he 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* on the seat back-
rest .
Audi drive select*: depending on the mode se­ lected, the reversible belt tensioner, the closing
of the w indows and sunroof*, and the inflating of
the side bolsters* on the seat backrest may not be active.
Evasive steering support
Evasive steering support helps you to steer the
vehicle around an obstacle in a critical situation .
If you avo id an obstacle after the acute warning,
then the evasive steer ing support ass ists you by
applying slight stee ring adjustment to correct
.,.
121