sensor AUDI A4 2017 Owner's Manual

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3 a,
are indicated, at the latest, by the time they en­
ter your "blind spot".
© Vehicles you are passing
If you slowly pass a vehicle that side assist has
detected (the difference in speed between the
veh icle and your vehicle is less than approximate­
ly 9 mph (15 km/h)), the display in the exterior
mirror turns on as soon as the vehicle enters your
blind spot.
The display will not turn on if you quickly pass a
vehicle that side assist has detected (the differ­
ence in speed is greater than approximately 9 mph (15 km/h)).
Functional limitations
The radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width. In some situations, the display
in the exterior mirror may turn on even though
there is no vehicle located in the area that is criti­
cal for a lane change. For example:
- If the lanes are narrow or if your are driving on
the edge of your lane. If this is the case, the system may have detected a vehicle in another
lane that is
not adjacent to your current lane.
- If you are driving through a curve. Side assist
may react to a vehicle that is in the same lane
or one lane over from the adjacent lane.
- If side assist reacts to other objects (such as
roadside structures like guard rails).
- In poor weather conditions . The side assist
functions are limited.
Do not cover the radar sensors ¢
fig. 112 with
stickers, deposits, bicycle racks or other objects,
because this will impair their function. Do not
use side assist when towing a trailer. For infor­
mation on cleaning, refer to¢
page 33 7.
A WARNING
- Always pay attention to traffic and to the
area around your vehicle. Side assist cannot
replace a driver's attention. The driver alone
is a lways responsible for lane changes and
similar driving maneuvers.
Assist
-In some situations, the system may not
function or its function may be limited. For
example:
- If vehicles are approaching or being left
behind very quickly. The display may not
turn on in time.
- In poor weather conditions such as heavy
rain, snow or heavy m ist.
- On very wide lanes, in tight curves, or if
there is a rise in the road surface. Vehicles
in the adjacent lane may not be detected
because they are outside of the sensor
range.
(D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. This can adversely affect the sys­
tem. Have an authorized Audi dealer or au­
thorized Audi Service Facility check their func­
tion.
(D Tips
If the window glass in the driver's door or
front passenger's door has been tinted, the
display in the exterior mirror may be incor­
rect.
Switching on and off
App lies to : vehicles wi th Audi sid e ass ist
The system can be switched on/off in the Info­
tainment system.
If the system is activated, the displays in the ex­
terior m irrors will turn on briefly when the igni­
tion is switched on.
.,. Select in the Infotainment system:
I MENU ! but­
ton
> Vehicle > left control button > Driver as­
sist
> Audi side assist. Off switches the system
off.
(D Tips
When you switch side assist on or off, the exit
warning system activates or deactivates
¢ page 118.
117

_& WARNING
The exit warning system is subject to limita­
tions and cannot warn you before every im­
pending collision:
- If the vehicle is too wide for the parking
space and covered by the neighboring
vehicles.
- Approaching objects or people such as cy­
cl ists o r skateboarders may not be detected
under certain circumstances.
- The system does not react to stationary ob­
jects.
- The view of the radar sensors may be im­
paired by leaves, snow, heavy spray or d irt.
Clean the area in front of the sensors
r:!vpage 116, fig. 112.
(D Note
Also read this information ¢0 in General in­
formation on page 117.
@ Tips
- The ex it warning system is switched on and
off through the side assist¢
page 117.
-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: vehicl es with rear cross-traffic assist
Fig. 115 Example display
Assist
Fig. 116 Infotainment system: rear c ross -tra ffic assist dis­
play
The rear cross-traffic ass ist can warn the driver of
a potential collision with approach ing cross-traf­
fic when driving in reve rse. Within its limits, the
system monitors the areas behind and next to
the vehicle using the radar sensors when leaving
a parking space
r:!vpage 116, fig. 112. Moving ob­
j ects that are approaching, such as cars, are de­
tected
¢ fig. 115.
If the system detects critical cross traffic when
backing out of a parking space, it wi ll react as fol­
lows:
- Visual indicator : an indicator appears in the In­
fotainment system disp lay with a red arrow
symbo l. The arrow points in the direction from
which the object is approaching
¢fig. 116.
-Audible warning signal: a continuous tone may
sound as an additional indicator when driving in
reverse.
- Automatic brake activation : a brief activation
of the brakes may also warn you of a potent ial
collision with an approaching object.
Requirements for using the rear cross-traffic
assist :
-The parking aid m ust be switched on
¢page 124.
-Reverse gear m ust be engaged.
- The speed must not be higher than approxi-
mate ly 9 mph (15 km/h).
A 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 responsible for braking at the cor-
rect time .
~
119

Ass is t
- Please note that the rear cross-traffic assist
may act ivate the brakes unexpectedly. Se­
cure any cargo that you are transporting to
reduce the risk of damage or injury .
- An additional brake act ivat ion may be tr ig­
gered within 20 seconds after an automat ic
brake activation.
- If there is an acoustic warning signa l from
the rear cross-traff ic assist, then the park­
ing system may not warn you of detected
obstacles under certa in circumstances .
- The view of the radar sensors may be im­ paired by leaves, snow, heavy spray or d irt.
Clean the a rea in front of the sensors
~ page 116, fig . 112.
A WARNING
T he rear cross-t raff ic assist is s ubject to lim i­
t at ions and cannot warn you before every im­
pending collision:
- If the vehicle is too w ide fo r the pa rki ng
spa ce and covered by the ne ighbor ing
vehicles.
- People , such as cyclis ts, jogge rs, in line skat­
ers and pedestrians, may not be detected
under certain circ umstances.
- If you are in a par allel par king sp ace.
(D Note
Also read this info rmation ~ CD in General in­
formation on page 117.
(0 Tips
- You can cancel the automatic brake activa ­
tion with increasing braking force if you ap­
ply the bra kes yourself or accele rate cons id­
e rab ly.
- In some s ituations, rea r cross-traffic ass ist
may warn you even if t here is no cross traffi c
i n a critic al are a, for examp le w hen ba cking
i nto a parking space or maneuver ing.
- T he rea r cross -traffic ass ist also switches off
whe n you swi tch off the ESC.
- T he rea r cross traffic assist switches on and
off thro ugh the p arking aid<:?
page 12 4.
- T he system is not ava ilable when towing a
trailer.
120
' Messages
Applies to: vehicles with Audi side assist
A message appea rs in the ins trument cluster dis­
play if the side ass ist sw itches off automat ica lly.
@j Audi side assist: currently unavailable . Sen­
sor vi sion re stricted due to surroundings. See
owner' s manual
@j Audi side ass ist and ex it warning: currently
unav ailable . Sensor vi sion restricted due to sur­
rounding s
The radar sensors ' vision is affected . The area in
front of the sensors must not be covered by bike
racks, stickers, leaves, snow or any other objects .
Clean the area in front of the sensors, if necessa­
r y
<:? page 116, fig . 112.
@j Audi side ass ist: currently unavailable . See
owner's manual
@j Audi side ass ist and exit warning: currently
unavailable. See owne r's manual
Side assist ca nnot be switched on at this time be­
cause ther e is a malfunction (for example, the
battery charge level may be too low).
@j Audi side as sist: malfunction! Plea se contact
Service
@j Audi side assi st and exit warning: malfunc ­
tion! Plea se contact Service
The system cannot guarantee that it will detect
vehicles correct ly and it has sw itched off. The
senso rs have been moved or are fa ulty . Have the
system checked by an authori zed Aud i dea ler o r
a uthorized Aud i Serv ice Facility soon.
@j Audi side assi st: unavailable in towing mode
@j Audi side ass ist and ex it warning: currently
unavailable. Towing mode
Side assist switches off automatically when the electrical connector 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 when tow ing a tra ile r.
Ill Rea r parking aid: obstacl e detection res trict-
ed ..,.

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The rear cross-traffi c assist is not ava ila ble . E i­
ther the ESC is switched off, or the radar sensors may be covered by a b ike rack, stickers, leaves,
snow or other objects. Switch the ESC on, or
clean the area in front of the sensors if necessary
c> page 116, fig. 112 . If this message cont inues
to be d isplayed, d rive immed iate ly to an au thor­
iz ed A udi dealer o r autho rized Audi Servi ce Fac ili­
ty to have t he malfunc tion repa ired.
Audi drive select
Introduction
Applies to: vehicles with Audi drive select
Drive se lect makes it possible to experience dif­
fe rent types of vehicle settings in one vehicle.
The dr ive r can se lect
Comfort , Auto a nd Dynamic
modes in the I nfota inme nt system to switch be­
tween , fo r exa mple, a sporty and a co mfo rtable
d riving mo de. Settings ca n be ad justed to your
p e rs o nal pr efe ren ces in
Individual m ode. This
makes it poss ible to comb ine settings su ch as a
sporty eng ine setting w ith smooth stee ring.
Descript ion
Applies to: vehicles with Audi drive select
The fo llow ing systems, among other things, are
i nfluenced by drive select:
Engine and automatic transmission
D epending on the mode, the en gine and auto­
mat ic transmission respond more quickly o r in a
mo re balanced ma nner to accelerator pe dal
movements . In the spo rty
Dynamic mode, the
transmission shifts at higher speed ranges.
Steering
The power s teering adapts. Ind irect s teer ing t hat
moves easi ly as in
comfort mode is espec ia lly
suited to long drives on highways . The
dynamic
mode p rovides sporty, d irect steering.
The fo llow ing applies to vehicles wi th dynam ic
steer ing* : the stee ring rat io chan ges base d on
ve hicle speed in or der to ma inta in optim um
steer ing effort for the drive r at all times. This
sets the steer ing to be less sensitive at higher
speeds i n order to prov ide improved vehicle con-
Assist
t ro l. At r educed spee ds, steeri ng is more direct in
o rder to kee p the steering effort as minima l as
poss ib le when the drive r is maneuvering t he vehi­
cle. Dynam ic steer ing* also p rovides more re­
spons ive steering performance at low and aver­
age speeds .
Suspension control*
The ada ptive dampers * use sensors to reco rd in ­
f ormat ion regard ing steering movements, b rak ­
ing and accele ration operations by the dr iver,
road s urface, driving speed, and load. This makes
it possible to adapt damping to the d riv in g situa­
t io n virtu ally in rea l ti me . Wi th drive select, you
can ad just th e adap tiv e dam pers to sporty
(Dy ­
nami c),
comfo rtable (Comfort ) or balan ced (Au­
to ).
Cornering light*
T he co rne ring light adapts the high beams to the
direction of the curve de pending on the speed .
T he pivo ting ac tion and the lighting also a dapt to
t h e mode.
Adaptive cruise cont rol (ACC)*
The behavio r whe n accelerati ng ca n be adjusted
from comfortable to s porty, depending on the
dr ive selec t mode . Adap tive cruise control also
r espon ds to the dr iv ing behav ior of t he vehicle
ahea d in a m ore conse rv a tive or sporty m an ner.
Engine sound*
The eng ine sound adapts to the c urrent mode
and can be subtle to sporty .
(D Tips
The S selector leve r posit ion automatically en­
gages whe n the
Dynamic mode is select ed.
121

Parking systems
Parking systems
General information
A ppl ies to: ve hicles w ith a rea r parking sys te m /pa rking sys ­
tem p lus/rearv iew camera/peripheral ca meras
Depending on your vehicle's equipment , various
parking aids will help you when parking and ma­
neuvering.
The
rear parking system is an audible parking aid
that warns you of obstacles
behind the vehicle
¢ page 125.
Parking system plus assists you when parking by
using audio and visual signals to indicate objects
detected in
front of and behind the vehicle
¢ page 125.
The rearview camera shows the area behind the
vehicle in the Infotainment display . The lines in
the rearview camera image help you to park or
maneuver ¢
page 126. The parking system plus
functions are also available
¢page 125.
The peripheral cameras give various views to
help you when parking or maneuvering
¢ page 128 . fhe parking system plus functions
are also available
¢ page 125.
A WARNING
- Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The parking system cannot replace
the driver 's attention. The driver is always
responsible when entering or leaving a park­
ing space and during similar maneuvers.
- Please note that some surfaces, such as
clothing, are not detected by the system.
-
- Sensors and cameras have blind spots in
which people and objects cannot be detect­ ed . Be especially cautious of small children
and animals .
- Always keep your eyes on the vehicle's sur­
roundings, using the rearview mirror as
well .
- The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody . The park­
ing system may be impaired as a result.
Have an authorized Audi dealer or author-
124
ized Audi Service Facility check their func­
tion .
(D Note
-Some objects are not detected or displayed
by the system under certain circumstances:
- Objects such as barrier chains, trailer draw
bars, vertical poles or fences
- Objects above the sensors such as wall ex­
tensions
- Objects with certain surfaces or structures
such as chain link fences or powder snow
- If you continue driving closer to a low ob­
ject, it may disappear from the sensor range. Note that you will no longer be
warned about th is obstacle .
- Keep enough distance from the curb to
avoid damage to the rims.
(D Tips
-The system may provide a warning even
though there are no obstacles in the cover­
age area in some situations, such as :
- certain road surfaces or when there is tall
grass.
- external ultrasonic sources such as from
cleaning vehicles .
- in heavy rain, snow, or thick vehicle ex­
haust.
- We recommend that you practice parking in
a traffic-free location or parking lot to be­
come familiar with the system . When doing
this, there should be good light and weath­
er conditions.
- You can change the volume of the signals
and the display ¢
page 131.
-Please refer to the instructions for trailer
towing in
¢page 132.
- What appears in the infotainment display is
somewhat time-delayed.
- Th e sensors must be kept clean and free of
snow and ice for park assist to operate.

Rear parking system
Description
Applies to: vehicles with rear parking system
The rear parking system is an audible parking
aid .
Descr iption
There is a sensor in the rear bumper cover. If
these detect an obstacle, audible signals warn
you .
Make sure the sensors are not covered by stick­
ers, deposits or any other obstructions as it may
impair the function of the system . For informa­
tion on cleaning, refer to
c:> page 337.
The range at which the sensors begin to measure
is approximately:
side 3 ft (0 .90 m)
rear
center 5.2
ft (1.60 m)
The closer you get to the obstacle, the shorter
the interval between the audible signals . A con­
tinuous tone sounds when the obstacle is less
than approximately 1 foot (0.30 meters) away.
Do not continue backing up
c:::> &. in General infor­
mation on page 124,
c:> Q) in General information
on page
124!
If the distance to an obstacle remains constant,
the volume of the distance warning lowers down
to mute after a few seconds (this does not apply
in the continuous tone range). If the obstacle
comes closer before the system mutes, the tone
sounds again. If the obstacle moves farther away
before the system mutes, a tone will not sound.
Pay attention to the vehicle's surround ings when
you start to drive.
Activating
The rear parking assist activates automatically
when the reverse gear is engaged. You will hear a
brief confirmation tone.
Parking systems
Parking system plus
Description
Applies to: veh icles w ith park ing system plus
Parking system plus provides audio and visual
signals when parking.
Fig. 119 Illustration:
Sensors are located in the front and rear bump­
ers. If these detect an obstacle, audib le and visu­
al signals warn you.
Make sure the sensors are not covered by stick­
ers, deposits or any other obstructions as it may
impair the function of the system. For informa ­
tion on cleaning, refer to
c:::>page 337.
The display field begins approximately at:
® 4 ft (1.20 m)
® 3 ft (0.90 m)
© 5.2 ft (1.60 m)
@ 3 ft (0.90 m)
T he close r you get to the obstacle, the shorter
the interval between the audible signals . A con­
tinuous tone sounds when the obstacle is less
than approximately 1 foot (0.30 meters) away.
Do not continue driving forward or in reverse
c:::> &. in General information on page 124, c:>(i) in
General information on page 124!
If the distance to an obstacle remains constant,
the volume of the distance warning lowers down
to mute after a few seconds (this does not apply
in the continuous tone range).
If the obstacle
comes closer before the system mutes, the tone
sounds again .
If the obstacle moves farther away
before the system mutes, a tone will not sound.
Pay attention to the vehicle's surroundings when
you start to drive.
125

Parking sy stem s
The new ly selected level is demonstrated briefly
by the sound generator .
View * -switch betwee n an optical d isp lay
(Graphi c) and camera image (Camera ) in the
right area o f the disp lay .
Tr ail er view * -show trailer view
Auto . front /rear camer a change * -the view be­
h ind the veh icle
( Rear mode) is displayed auto­
mat ica lly when you shift into reverse gear . The
view in front of the vehicle
( Fr ont mode) is d is­
p layed automatically whe n you shift into t he for­
ward gea rs. When first activating in a forwar d
gear with the P"'~ button, the front s ide v iew is
disp lay ed
(Co rner view (front) mode).
If yo u do not se t the./, th e view behind the vehi ­
cle
( Re ar mode) is a lways d isplayed and it does
not switch to the
F ront mode when a forward
gear is selected .
{D Tips
-Seve ral menus can be accessed w ith the
right contro l button only when the park ing
aid is active.
- T he volume settings are a utomat ica lly stor­
ed and ass igned to the remote cont ro l key
that is being used.
Error messages
Applies to: vehicles with a rear parking system/parking sys­
tem plus/rearview camera/peripheral cameras
Ill Rear parking aid : malfunction! Ob stacle s
c annot be d etected
Ill Front parking aid : malfunction! Obstacles
cann ot be d etected
Ill Parking aid: mal funct ion! Obstacles cannot
be d etected
When one of these messages appears, there is a
system ma lf u nction. The LED in the P
11.A. button a l­
so blinks when switching it on. The relevant mes­
sage only appears again when you manua lly act i­
vate the parking aid w it h the button .
Ill Rear pa rki ng a id: obstacle detect ion restrict·
ed
132
The rear cross -traffic ass ist* is not ava ilable
¢ page 119 , Rear cross-traffic assist. Either the
ESC is switched off, or the radar sensors may be
covered by a b ike rack, st ickers, leaves, snow or
other objects . Switch the ESC on, or clean the
area in front of the sensors if necessary
¢ page 116, fig. 112 . If this message continues
to be displayed, dr ive immediately to a n author­
iz ed Audi dealer or author ized A udi Se rvice Fa cili­
ty to have the m alfu nction repaired.
Parking system plus*
If a sensor or speaker is faulty, the J¼ symbol
will appear in front of/behind the vehicle in the
Infotai nment system d isplay. If a rear sensor is
faulty, only obstacles that are in areas @and @
a re show n
¢page 125, fig. 119 . If a front senso r
is fau lty, only obsta cles tha t are in a reas © and
@ are shown.
Peripheral cameras*
There is a system malfunction if the % symbol
appears and the co rresponding area of the dis ­
play is show n in bl ack. The c amera is not wo rking
i n th is area.
D rive to an author ized A udi dealer or autho riz ed
A udi Se rvice Facil ity immed iate ly to have the
malfu nction cor rec ted .
Trailer hitch
Applies to: vehicles with a rear parking system/parking sys­
tem plus/rearview camera/peripheral cameras and trailer hitch
When the trailer soc ket is in use, th e parking sys­
tem rear sensors are not act ivated when you sh ift
i nto reverse gear or when you press the p,,1, but­
ton . Th is resu lts in the following restrict ions .
Rear parking system*
There is no distance warning.
Park ing system plus*
There is no distan ce warn ing for the rear. The
front senso rs remain activated. The visu al display
switches to trailer mode . ..,.

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Rearview camera* /Peripheral cameras*
There is no distance warning for the rear. The
front sensors remain activated. The visual display
switches to trailer mode. The rearview camera
image will not show the orientation lines and the
blue surfaces.
Trailer hitches that are not installed at the
factory may cause the parking system to mal­
function or they may restrict its function. Parking
systems
133

Intelligent Technology
Snow chains
If there are snow chain laws, snow chains must
also be used on vehicles with a ll wheel drive
¢ page 332, Snow chains.
Replacing tires
For vehi cles w ith all whee l dr ive, only whee ls with
the same rolling circumferen ce shou ld be used .
Avoid using tires w ith different tread depths
¢ page 324, New tires or wheels .
Offroad vehicle?
Your Audi is not an offroad vehicle - the re is not
e nough g ro und clea rance. For this reason, avo id
d iffi cult terrain .
_& WARNING
-Also, in vehicles with all wheel drive, adapt
yo ur driving style to the current road and
t raffic conditions . Do not let the increased
sa fety provided tempt you into tak ing risks,
because th is increases the r isk of an acci­
dent.
- The brak ing ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not diffe rent from a two whee l dr ive vehi­
cle . Do not be tempted to accelerate to a
high spee d when t he road is slippe ry, be­
ca use this increases the risk of an accident.
- Note that on wet streets, the front wheels
can "hy droplane" if dr iving at speeds that
are too hig h. Unlike front whee l drive
vehicles, the eng ine does no t r ev highe r su d­
denly when the vehicle begins hydroplaning .
For this reason, pay attention to the road
condit ions regar dless of you r speed to re­
duce the r isk o f an accident.
Energy management
The starting ability is optimized
The energy management system manages the
electrical energy distribution and optimizes the
availability of electrical energy for starting the
engine.
When a ve hicle w ith a co nventional e nergy sys ­
tem is not driven for a long time, the battery is
138
dra ined by equipment (for examp le, the immobi l­
izer) . In certain circ umstances, there could may
not be enough ene rgy to sta rt the eng ine.
Yo ur vehicle is equipped wi th an inte lligen t ener ­
gy management system for dist ributing elec trici ­
ty. This significant ly improves the starting ability
and increases the batte ry life.
The ene rgy management sys tem Is m ade up of
batte ry diagnosis , standby current manage­
ment
and dynamic ene rgy management .
Battery diagnosis
The ba ttery diagnos is determines the batte ry
c ha rge level. The sensor s de ter mine the batte ry
vo ltage, the batte ry cu rrent, and the batte ry
tempera ture. The current cha rge level and the
perfo rmance of the battery a re determined base d
on this .
Idling current management
The idling cur rent m an age ment decreases the
energy used while parked . With the engine
switched off, it manages the energy distrib ution
to the different e lectr ica l components. Data from
the battery d iagnosis is taken into account for
th is.
Depend ing on the battery charge leve l, electrical
equipment is switched off one item after the oth ­
er, to prevent the battery from drain ing and to
maintain the sta rting ability.
Dynamic energy management
W hile driv ing, dynam ic energy man agement dis ­
tributes the appropr iate amo unt of energy to the
electrica l eq uipment. It contro ls t he battery
charge level so that mo re energy is not used then
i s be ing generated in order to maintain an opti­
mal battery c harge level.
(D Tips
- Energy management cannot overcome the
laws of physics. Note that the charge level
and length of the battery life are limited.
- When the sta rting ability is endangered, the
(•) indicator light t urns on¢
page 31 .

<( a, .... N ..... N .... 0 0
3 a,
The shoulder belt should lie as close to the center
of the collar bone as possib le and should fit well
on the bod y ¢
A in Safety belt position on
page 249.
.. Push
the loop- around fittings up ¢ fig . 21 8@ ,
or
.. squeeze to gether the@ button, and push the
loop-around fittings
do wn@ .
.. Pull the belt to make sure that the upper at­
tachment is p roperly engaged .
A WARNING
Always read and heed all WARNINGS and oth­
er important informat ion¢
page 247.
With the front seats, the height adjustment
of the seat can also be used to adjust the po­
sition of the safety belts.
Improperly worn safety belts
Incorrectly positioned safety belts can cause se­
vere injuries.
Wearing safety belts improperly can cause seri­
ous injury or death. Safety belts can only work
when they are correctly pos itioned on the body .
Improper seating positions reduce the effect ive­
n ess of safety be lts and will even inc rease the
ris k of injury and death by mov ing the safety bel t
to cr it ica l areas of the body. Imp roper seating
positions also increase the risk of serious inj ury
and death when an airbag deploys and strikes an
occ upant who is not in the co rrect seat ing posi­
tion. A driver is respons ible for the safety of all
vehicle occupants and espec ia lly for children.
Therefore:
.. Never permit anyone to ass ume an incorrect
s itting position in the veh icle wh ile traveling
¢ &, .
A WARNING
Improperly worn safety belts i ncrease the risk
of serious personal injury and death wheneve r
a vehicle is be ing used.
S afet y be lts
- Always make sure that all veh icle occupants
are correctly restrained and stay in a correct
seating position whenever the vehicle is be­
ing used.
- Always read and heed all WARNINGS and
other important informat ion¢
page 247.
Belt tensioner
How safety belt pretensioners work
Reversible safety belt pr etensioners
T he safety belts on the front seats are equ ipped
wi th reve rsible safe ty belt pretensioners. The fol­
l owing func tions a re available when the dr iver's/
front passenge r's safety belts are fastened:
- I n ce rtain driving situations, the safety bel ts
may tig hten w it h a reve rsib le tensioning func ­
t ion
¢ page 107 .
-The s afe ty be lts may also tighten with thi s re-
versible tens ion ing f unct ion in m inor collisions.
Pyrotechnic safety belt pretens ioners
All safety belts except for the safety belt in the
center seat position of the rea r seat are equipped
with safety belt pretensioners. The sys tem is acti­
va ted by sensors in front, side and rear-end co lli­
s ions of great severity and in a rollover. Th is
t ightens the belt and takes up belt slack¢&.
in
Service and disposal of safety belt pretensioner
on page 252.
Taking up the slack helps to re­
duce forward occupant movement during a co lli­
s io n.
(!) Tips
The pyrotechn ic safety belt pretensioners can
on ly be act ivated once.
- The safety belt pretensione rs do not deploy
in minor frontal, side and rear-end colli­
sions.
- When the pyrotechn ic safety belt preten­
sioners are activated, a fine dust is released.
Th is is normal and is not caused by a fire in
the vehicle .
- The relevant safety requirements must be
observed when the vehicle or components
of the sys tem are scrapped. An authorized
Audi dealer or qua lified wor kshop is fami lia r .,.
251