warning light AUDI A5 COUPE 2018 Workshop Manual

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

Assistance systems
-Activating the emergency flashers l) .
The message Audi pre sense. ¢ page 126,
fig. 12 6 will wa rn you abo ut the danger.
Aud i d rive select *: the t rigger t imes are adjusted
dependi ng on the mode selected.
Audi pre sense front
Description
A ppl ies to: ve hicles w ith Audi a daptive cruise co ntrol
W ith in the limits of the system, pre sense front
can warn you of impending coll is ions and initiate
t he corresponding brak ing maneuvers or the sup­
port ing measures when avo iding a collision .
I f detected in time, the system can rank the dan­
ge rous situation as cr itical if a ve hicle driving
a head brakes s udden ly, if your own vehicle is ap­
p roaching a s ignificantly s lower vehicle at high
speed or when there is an oncom ing vehicle d ur­
i n g a t urning maneuve r.
If detection is not poss ible , the n pre sense front
does not react .
Warnings
App lies to: ve hicles w ith Audi a daptive cruise co ntro l
F ig . 126 In strum ent cl uste r: appro ach warn ing
General information
The system recognizes var ious dangerous situa ­
tions. The
early warning occurs if:
-a veh icle d riving ahead brakes s uddenly,
- yo ur own vehicle ap pro aches a signific antly
s lower vehicle o r stationary ve hicle in the direc­
tion o f travel.
l) Thi s is not a va ilab le in some co untri es .
126
When this warn ing occurs, i t may o nly be pos si­
ble to avo id a co llision by swerving o r braking
strongly . T he message
Audi pre sense.
¢ fig. 126 and a wa rning tone will warn you
about the danger .
If you do not react enough or not at all to a dan ­
gerous s ituat ion that was detected by the sys­
tem, pre sense front provides assistance by ap­ plying the b rakes.
If a collision is imminent, the system will fi rst
provide an
acute warning by b raking sharply . You
will a lso warned by an indicato r in the instrument
cluster
disp lay¢ fig. 126. If yo u do not react to
the acute warning, pre se nse front can bra ke w it h
i nc reas ing force wi thin the lim its o f th e
system
1> . Thi s reduc es the v ehicl e spe ed in t he
even t of a collision . At low vehicle s peeds , pre
s ense fr on t can initi ate a com plete dece le rat ion
sho rtly befo re a collision with a veh icle dr iv ing
ahead
l ) . If pre sense front determines that you
a re not b raking st rongly enough when a co llision
i s imminent, it can increase t he b raking force.
The followi ng func tions trigge r in conjunc tion
with pre sense basic/ rear at corresponding vehi ­
cl e speeds :
-Reversible tens io nin g of the front s afety bel ts.
-Clos ing t he windows and sun roof* .
-Infla ting t he side bols ters* on the seat back-
rest .
Audi drive select* : depending on the mode se ­
l ected , the reversible belt tensioner, the closing
of the windows and s unroof*, and the inflating of
t h e side bolste rs* on the seat backrest may not
be active.
Evasive steering support
Evas ive steering s upport helps you to steer the
vehicle around an obstacle in a crit ica l sit uat io n.
If you avo id a n obs tacle afte r the acu te warning,
t he n th e evasive ste ering suppo rt assists you by
applying slight stee ring adjus tment to corre ct
.,..

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-when there are visual obstructions, such as glare, reflections or var iations in light
-when it is dark
-if the camera window or the windshie ld is
dirty, iced over, damaged or covered
-when driving on snow, ice or loose ground
-in curves
-if the ESC was restricted or switched off
-when towing a trailer
-when the driver's seat belt is unfastened
-up to ten seconds after switching on the ig-
nition
(D Note
Impacts or damage to the camera mount on
the windshield can displace the sensor. Pre
sense city can be impaired by this. Have an au­
thorized Audi dealer or authorized Audi Serv­
ice Facility check the ir function.
-You can cancel the system braking interven­
tion if you accelerate considerably or swerve
away.
-Keep in mind that pre sense city can brake
unexpectedly. Always secure any cargo or
objects that you are transport ing to reduce
the risk of damage or injury.
-Certain pre sense city funct ions are switch­
ed off when the ESC is limited or switched
off¢ page 152.
-When there is a malfunction in the camera,
the pre sense city functions also switch off.
Settings in the
Infotainment system
A ppl ies to: ve hicles with Audi pre sense
~ Se lect in the Infotainment system: !MENUI but­
ton
> Vehicle > left contro l button > Driver as ­
sistance> Audi pre sense.
Turn on /off Audi pre sense -
the pre sense func­
tions can be turned on and off.
If the system is switched off, it switches o n again
automatically once the ignition is sw itched on
again.
Assistance systems
Prewarning -the early warning can be switched
off or the pre sense city/front warning point can
be set
(Ea rly/Medium /Late ).
Set the warning t ime for the early warning to
Early at first. If this causes undesired ear ly warn ­
ings to appear, then set the warning time to
Me­
dium .
The Late warning time should on ly be set
in special circumstances, for example, when driv ­
ing with a very dynamic style.
(D Tips
Your settings are automatically stored and as­
signed to the remote control key being used.
Messages
Applies to : v ehicles wi th Audi pre sense
IIJ Audi pre sense: malfunction! Please contact
Service
T his message appears when the pre sense func ­
tion is affected. For example, this could be
ca used by a faulty sensor. Drive to an authorized
Audi dealer or authorized Audi Service Facility im­
mediately to have the malfunction corrected.
II Audi pre sense currently restricted. Restrict­
ed sensor vision due to surroundings. See own­
er's manual
This message appears if the radar sensor and
camera view is obstructed, for example by leaves,
snow, heavy spray or dirt. If necessary, clean the
sensors and the area around the camera
¢ page 114, fig . 112 or ¢page 134, fig. 134 .
II Audi pre sense: currently restricted. Towing
mode
For vehicles with a trailer hitch installed at the
factory, the pre sense rear functions switch off
when the electrical connector at the socket is
plugged in. There is no guarantee the functions
will switch off when using a retrofitted trailer
hitch.
II Audi pre sense: currently restricted
This message appears if the ESC is restricted or
switched off, for example.
IJl,,
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Ass is tan ce sys tems
Ill Audi pre sen se : cu rrent ly rest ricted . See
owner 's manu al
This message appea rs when there is a tempora ry
fa ilure in a subsystem, such as the ESC. If this
message appears repeated ly, drive to an author ­
ized Audi dealer or authorized Audi Service Facili­
ty to have the malfunction corrected.
(II Aud i pre sen se: emergency br aking sy ste m
off
This message appea rs if the pre sense functions
are switched off thro ugh the Info tainmen t sys­
tem or if the system is not ready .
Audi active Lane assist
Description
Applies to : vehicles wi th A udi act ive la n e ass ist
Active lane ass ist (lane departure warning) de­
tects lane marker lines within the l imits of the
system using a camera in the windshield . If you
are approach ing a detected lane marker l ine and
it appears likely that you will leave the lane, the
system w ill warn you with corrective steering.
You can override this steering at any time. If you pass over a line, the steering whee l will vibrate
lightly . In order for this warn ing v ibration to oc­
cur, it must first be sw itched on in the Infotain­
ment system. Act ive lane assis t is ready for oper­
ation when the lane marker line is detected on at
least one side of the veh icle .
The system is designed for driving on express­ ways and h ighways and therefore only activates
at speeds above approx imately 40 mph (65 km/
h).
Applies to: vehicles with side assist: if you acti­
vate a turn s ignal when active lane assist is ready
and it classifies a lane change as critical because
of vehicles traveling alongside you or approach­ i n g you, the re w ill be noticeable corrective steer­
i n g shortly before you leave the lane. This will at­
tempt to keep your veh icle in the lane.
Applies to: vehicles without side assist: the ready
system does not wa rn you if you activate a turn
signal befo re cross ing the lane marker line. In
130
this case, it assumes that you are chang ing lanes
intentionally .
Applies to: vehicles with adaptive cruise control:
there is no corrective steer ing or warnings if the
system recognizes a dist inct passing maneuver .
If the conditions are met, traffic jam assist
switches on at speeds under approximately
40 mph (65
km/h) ¢ page 121.
A WARNING
,-
- The system warns the driver that the vehicle
is leaving the lane using correct ive steering .
The driver is always responsible for keeping
the vehicle within the lane.
- The system can help you keep the vehicle in the lane, but it does not drive by itse lf . Al­
ways keep your hands on the steering
wheel.
- Cor rective steering may not occur in certain
situations, such as du ring heavy braking.
- There may be cases where the camera does
not recognize all lane marker lines. Correc­
tive stee ring can only take place on the s ide
of the vehicle where lane marker lines are
detected.
- Othe r road structures or objects could poss i­
bly be identified un intent ionally as lane
marker lines . As a result, corrective steering
may be unexpected or may not occur.
- The camera view can be restricted, for ex­
ample by vehicles driving ahead or by rain,
snow, heavy spray or light shining into the
camera. This can result in active lane ass ist
not detecting the lane marker lines or de­
tect ing them incorrectly .
- In certain s ituations where visibility is low,
the vehicle may switch from an "early" to
"late" steering correction .
- Under certain cond it ions such as ruts in the
road, an inclined roadway or crosswinds, the
corrective steer ing alone may not be enough
to keep the vehicle in the m iddle of the lane .
- For safety reasons, act ive la ne assist must
not be used when there are poor road and/
or weather conditions such as slippery roads, fog, gravel, heavy rain, snow and the

potential for hydroplaning. Using active lane
assist under these conditions may increase
the risk of a crash.
Switching on/off
Applies to: veh icles with Audi active lane assist
Fig . 127 Turn s ignal lever: button for act ive lane ass ist
F ig . 128 W inds hield: camera window for active lane ass ist
.. Press the button to switch the system on and
off ¢ fig. 127. The indicator light in the instru­
ment cluster turns on or off.
Assistance systems
Analog instru- Audi virtual Meaning on
ment cluster cockpit/head- the corre- up display* sponding side
Green Li ne(s) Green line(s) Active lane as-
(left/right) (left/right) s ist is activat -
J \' J \' ed and ready
to provide
warnings .
-Red line Active lane as-
(left/right) sist warns you
· / \' before leaving
a lane . In addi-
tion, the steer-
ing whee l vi-
brates light ly.
Yellow line(s) Yellow line(s) Active lane as- (left/right) (left/right) s ist is activat-
·/ \' ed, but is not
re ady to give
warning
If the system is switched on but is not ready to
provide warn ings, one of the following could be
the cause:
- There is no lane marker line .
- The relevant lane marker lines are not detected
(for example, markings in a construction zone
or because they are obstructed by snow, dirt,
water or light ing) .
- The vehicle speed is below the activation speed of approximately 40 mph (65 km/h).
- The lane is too narrow or too wide.
- The curve is too narrow.
- The driver's hands are not on the steering
wheel.
CI) Tips
- Make sure the camera window ¢fig. 128 is
not covered by stickers or other objects. For
information on cleaning, see
¢page 362 .
-In certa in markets: if the system is switched
on, it will switch on automatically each time
the ignition is switched on.
131

Assistance systems
Display in the instrument cluster
Applies to: vehicles w ith Audi active lane assist
Fig. 129 Instrument cluster (multi -color d isplay): active
lane assist is sw itched on an d ready to provide warnings
Fig. 1 30 Instrument cluster (monoc hrome display): active
lane assist is switched on
You can open up the Driver assistance display for
the act ive lane assist usi ng the m ultifunction
steer ing whee l buttons
r::;, page 13.
An add itional ind icator appears in the head-up
d isplay* .
Multi-Color Display
Refer tor::;, fig. 129
Driver assistance Meaning on the corre-
display in the in- sponding side
strument cluster
Green line(s) Active lane assist is acti-
(left or right) vated and ready to pro-
vide warnings.
Red line Active lane assist w arns
(left or r ight)
you before leav ing a lane.
In addition, the steering
wheel vibrates lightly.
Gray line(s) Active lane assist is acti-
(left or right) vated, but is not ready to
give warning
132
Monochrome display
Refer to r;;;, fig. 130
Driver assistance Meaning on the corre-
display in the in-
sponding side
strument cluster
Light gray line(s) Act ive lane assist is acti-
(left or right) vated and ready to pro-
vide warnings .
Blinking line(s) Active lane assist warns
(left or right)
you before leaving a lane.
I n addition, the steering
wheel vibrates lightly.
Dark gray line(s) Active lane assist is acti-
(left or right) vated, but is not ready to
. . give warning
Messages in the instrument cluster display
If the active lane assist sw itches off automatical­
ly, the indicator light in the display turns off and
one of the follo wing messages appears:
rl1 Audi active lane assist: malfunction! See
owner's manual
Drive to an authorized Audi dealer or authorized
Audi Service Facility immed iately to have the
malfunction corrected.
rl1 Audi active lane assist: currently unavaila­
ble. Camera view restricted due to surround­
ings. See owner's manual
This message appears if the camera is unable to
detect the lines. This could happen if:
- Th e camera fie ld of view
c;;;,page 131, fig. 128 is
dirty or covered in ice . Clean th is area on the
windshield
c;;;, page 362.
-Th e camera fie ld of view is fogged over. Wait
until the fog has cleared before switching the
active lane assist on again.
- The system has been unable to detect the lanes
for an extended period of time due to road con­
ditions. Switch active lane assist back on when
the lines are more visib le.
rl1 Audi active lane assist: currently unavaila­
ble. See owner 's manual

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Parking systems
General information
Applies to: ve hicles with a rea r parking sys te m /pa rking sys­
tem plus/rearv iew camera/peripheral cameras
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 142.
T he
parking system plus assists you when park ­
ing by audibly and visually indicating objects de­
tected
in front of and behind the vehicle
¢ page 142.
T he
rearview camera shows the area behind the
vehicle in the Infotainment system display . The
lines in the rearview camera image help you to
park or maneuver ¢
page 143. The parking sys­
tem plus functions are also available
¢ page 142.
The
peripheral cameras give various views to
help you when parking or maneuvering
¢
page 145 . The parking system plus functions
are also available
¢ page 142.
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.
Parking systems
Have an authorized Audi dealer or author­
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 this obstacle.
-Keep enough distance from the curb to re ­
duce the risk of damage to the rims.
(!) 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 148.
-Please refer to the instructions for towing a
trailer located in
¢page 149.
-What appears in the infotainment display is
somewhat time-delayed.
-The sensors must be kept clean and free of
snow and ice for the parking aid to operate.
141

Intelligent Technology Electronic stabilization
control (ESC)
Description
Ele ctronic stabilization control (ESC) supports
driver safety . It reduces the risk of slipping and
improves d riving stability. ESC detects critica l sit ­
uations such as when the vehicle is oversteering
and understeering or the wheels are spinn ing.
T he vehicle is stabilized by applying the brakes or
reducing eng ine torq ue. When the ESC engages,
the
J;,j ind icator light blinks in the instrument
cluste r.
T he follow ing systems are integrated in the ESC:
Ant i-loc k bra king s ystem (ABS)
ABS prevents the whee ls from locking when brak­
ing. The vehicle can still be steered even during
hard brak ing. Apply steady pressure to the brake
pedal. Do not pump the pedal. A pulsing in the
b rake pedal indicates that the system is act ing to
stabilize the vehicle .
Br ake a ssist s ystem
The brake assist system can decrease braking dis­
tance. It increases brak ing power when the driver
presses the brake pedal quickly in emergency sit­
uations . You must press and hold the brake pedal
unti l the dangerous sit uat io n is ove r. In veh icles
with adaptive cr uise contro l*, the bra ke assist
system is more sensitive if t he d istance detec ted
to the veh icle dr iv ing ahead is too small.
Anti-Slip Regulation (ASR )
ASR red uces eng ine power when the drive wheels
begin spinning and adapts the force to the road
conditions . This makes it easie r to sta rt, acceler­
ate and dr ive up hill s.
Electronic differenti al lock (EDL )
EDL applies the brakes to a wheel that starts
spi nning and t ransfers t he drive powe r to the
;;§ other driving wheels. This f unct ion is not availa-....
~ b lea t higher speeds.
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Intellig ent Technology
In extreme cases , ED L automat ica lly switches off
to keep the brake o n the braked wheel from over­
heating. The veh icle is still working correct ly. ED L
will switch on again automatically when condi­
tions have returned to normal.
Ste ering recommendation
The ESC he lps to stabilize the vehicle by changing
the steering torque.
In veh icles wi th dynamic steer ing*, ESC also
helps to stab ilize the steer ing in crit ica l sit ua ­
tions.
Selective wheel torque control
Se lective w heel to rque con trol is used w hen d riv­
i ng on curves. Bra king is targeted towa rd t he
whee ls on the inside of the cu rve as needed. This
allows mo re precise driving in curves .
Automatic post -collision braking system
The "automat ic post-collision braking system "
can help to reduce the risk of sliding and of addi­
tiona l co llisions after an acciden t. If the a irbag
contro l
module detects a co llision, the veh icle is
braked by the ESC.
T he veh icle does not bra ke automatically if:
- the dr iver presses the acce lerator pedal, or
- the ESC, the brake system or the veh icle elect ri-
cal system are not functioning.
A WARNING
=
- The ESC and its integrated systems cannot
overcome the lim its imposed by natural
phys ica l laws. This is especially important
on slippery or wet roads. If the systems be­
gin acting to s tabilize yo ur vehicle, you
should immediately alter your speed to
match the road and traffic conditions. Do
not let the inc reased safety provided tempt
you into taking risks. This could increase
your r isk of a coll is ion.
- Please note the ris k of a collis ion increases
when dr iv ing fast, especially through curves
and on slippery or wet roads, and when dr iv-
ing too close to objects ahead . The ESC and
~
151

Intelligent Technology
its integra ted systems cannot always pre­
vent collisions
-there is still a risk of acci­
dents!
- Press the accelerator pedal carefully when
acce lerating on smooth, slippery surfaces
such as ice and snow. The dr ive wheels can
spin even when these control systems are
Switching on and off
installed and this can affect dr iv ing stab ility
and increase the risk of a collision.
@ Tips
- The ABS and ASR only funct ion correctly
when a ll four wheels have a simi lar wear
condition . Different tire sizes can lead to a
red uction in engine power.
- You may hear noises when the systems de­
scribed are working.
ESC turns on automatically when you start the engine.
Fig . 159 Cente r co nso le w it h button ~Of'
fun ct io n of the ESC is lim ited or switc hed off. The
amount of s tabilization contro l w ill differ de­
pending on the leve l.
The following examp les are unusua l situat ions
whe re it may make se nse to sw itch sport mode
on in order to allow the wheels to sp in:
- Roc king the veh icle to free it when it is stuck
- Dr iving in deep snow or on loose g round
- Dr iving with snow chains
The ESC is des igned to function in levels . Depend­
i n g on the level that is selected, the stabilization For you
r safety, switch the sport mode
off in ad­
vance.
ESC levels
Sport mode on ESC/ASRoff Sport mode off or
ESC /ASRon
Behavior
The ESC and ASR stabiliza- The stabilization funct ion is The f ull s tabilization func-
t ion funct ions are lim ited not availab le
¢ .&. . ESC and tion of the ESC and ASR is
c;> .&. . ASR are switc hed off. ava ilab le aga in.
Operation Press the 11' OFF I button Press and hold the !1' O FFI Press the 11' OFFI button
briefly. button longer than 3 sec- aga in.
onds.
Indicator II turns on. fl and 14'tl•)H turn on . II turns off or II and
lights lf'tl•)H turn off .
Message s Stabilization control (ESC ): Stabilization control (ESC ): Stabilization control
sport . Warning! Restricted off . Warning! Restricted (ESC) : on
s tability stability
152

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A WARNING
You should only switch sport mode on or switch ESC/ASR off if your driving abilities
and road conditions permit .
- The stabilization function is limited when
sport mode is sw itched on . T he driving
wheels co uld spin and the vehicle cou ld
swerve, espec ially on s lick o r sli ppery roa d
surf aces.
- T here is no vehicle stabilization when ESC/
ASR a re swi tched off .
Brakes
New brake pads
New brake pads do not ac hieve the ir full b raking
effect during the first 250 mi (400 km) . They
must be "broken
in " fi rst . However, you can com­
pensate for the slightly reduced bra king fo rce by
pr ess ing firmly o n the bra ke pe dal. Avoid heavy
b ra king dur ing t he b reak -in per io d .
Wear
Brake pad wear depends largely o n the way the
ve hicl e is driven and on operat ing cond it ions .
This is especially t rue if you are d riving freque ntly
in t he c ity and on curves o r wi th a sporty driving
s tyle.
Operating noise
Noises may occur when braking depend ing o n the
speed , braking force and ou ts ide cond it ions such
as te m pe ra ture and humi dity .
Wet conditions or road salt
In certain situations, for example after driving
through water, in heavy ra in or after washing
your car, the braking ef fect may be reduced due
to mo isture or ice on the b rake roto rs and b rake
pads. The b rakes mus t be
"dried" firs t wi th a few
care ful bra ke app lic at ions.
At higher speeds and with t he windsh ie ld wipers
turned o n, the brake pads press against the bra ke
rotors for a s ho rt amoun t of time. This ac tion,
whi ch is not felt by the driver , happens at regul ar
i nte rvals an d ens ures a better reac tion time fo r
the brakes in wet weat her.
Intellig ent Technology
The brak ing effec t can a lso be reduced if yo u are
driving on salted roads and yo u do not app ly the
bra kes for long per iods o f time. The layer of sa lt
on the brake rotors and pads m ust be worn off
first whe n the brakes are applied .
Corrosion
Leaving t he vehi cle pa rked for long periods o f
time, low mileage and avoiding heavy b raking
can contrib ute to corros ion on the b rake roto rs
and to dirty brake pads.
If you usu a lly avoid heavy bra king or if there is
cor rosion prese nt, occasiona l heavy braking at
high speeds is recommended to clean the brake
roto rs and pads
c> ,& .
Brake system malfunction
If you notice that the bra ke pedal trave l has sud ­
denly in crease d, then a brake circuit in the dua l­
circuit b rake system may have malfunctioned.
Drive to an authorized A udi dealer or authorized
Audi Se rvice Facility immed iate ly to have the
problem corrected. On the way there, d rive w ith
reduced speed and keep in mind that you will
need a longer distance to stop and you will need
to press the bra ke ped al ha rder.
Low brake fluid level
When the bra ke fluid level is low, malfu nctions in
the b rake system may occur . T h e brake fluid level
is e lec tron ically moni tored.
Brake booster
The brake booster ampli fies t he p ressure you ap­
ply to the brake pedal.
A WARNING
- On ly app ly the brakes for the purpose of
cleaning the brake system when road and
traffic cond itions permi t. You must not en ­
da nger other road users. This inc reases the
ris k of an a ccid en t.
- Never let the vehicle roll while the engine is
sto pped bec ause t his increases the risk of an
a ccident.
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