Audi adapt ive crui se con trol a nd b rakin g guar d
-For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather (such
as ice, fog, gravel, heavy ra in and hydroplan
ing). Using the system under these condi·
tions co uld result in a collision.
- Switch adaptive cruise control off tempora
rily when driving in turn ing lanes, on ex
pressway exits or in construction zones. Th is
prevents the vehicle from accelerating to
the set speed when in these situat ions .
- The adapt ive cr uise control system will not
brake by itself if you put your foot on the ac
celerator peda l. Doing so can override the
speed and distance regu lation.
- When approaching stat ionary objects such
as stopped traffic, adaptive cruise control
will not respond and braking guard will have limited function.
- The adaptive cruise control system and
braking guard do not react to people, ani
mals, objects crossing the road or oncom ing
objects.
- The function of the radar sensor can be af
fected by reflective objects such as guard
rails, the entrance to a tunnel, heavy rain or
ice.
- Never follow a vehicle so closely that you
cannot stop your vehicle safely. The adap·
t ive cruise control cannot slow or brake the
vehicle safely when you fo llow another veh i
cle too close ly. Always remember that the
automatic braking function ca nnot br ing the
vehicle to a sudden o r emergency stop un
der these conditions .
- To prevent unintended operation, always
switch ACC off when it is not be ing used .
(D Note
The sensor can be disp laced by impacts or
damage to the bumpe r, whee l housing and
unde rbody. That co uld affect the adaptive
cruise control system and braking guard .
Have your authorized Audi dealer or author
ized Audi Service Facility check their function.
90
In curves
Applies to vehicles: with A udi adaptive cruise control
Fig. 93 Exa mple : dr iving into a curve
When driving into a curve c:::> fig. 93 and out of a
curve, the adapt ive cruise control may react to a
vehicle in the next lane and apply the brakes . You
can override or prevent the braking by pressing
the accelerator pedal b rief ly.
Stationary objects
Applies to vehicles: with Audi adaptive cruise control
Fig. 94 Example: object chang ing lanes and stat ionary ob ·
jec t
The adaptive cruise control system only reacts to
objects that are moving or that the system has
already detected as moving . For example, if ave
hicle @, which has already been detected by the
adaptive cruise control, turns or changes lanes
and another stationary vehicle @ is located in
front of that vehicle, the system will not react to
the sta tionary veh icle.
Vehicles with manual transmission
Applies to vehicles: with Audi adaptive cruise control
The adaptive cru ise control is availab le from the
2nd gear through the 6th gea r in the customary
RPM. ....
Audi adaptive cruise control and braking guard
You can set any speed between 20 mph and 95
mph (30 and 150 km/h).
I ndicator lamps and messages in the instrument
cluster display inform you about the current sys
tem status and settings.
Switching Audi adaptive cruise control on
• Pull the lever toward you into position @
¢
fig. 96. ACC standby appears in the instru
ment cluster d isplay.
Setting the speed and activating regulation
• To set the current speed, press the !SETI button
¢ page 11, fig. 4. The set speed is shown in the
tachometer @ and is also shown briefly in the
display @¢
fig. 97.
Switching Audi adaptive cruise control off
• Push the lever away from you into position @
until it clicks into place . The message
ACC off
appears.
@ Indicator lights
II-Adaptive cruise control is switched on. No
vehicles are detected up ahead. The stored speed
is mainta ined .
• -A moving vehicle is detected up ahead . The
adapt ive cruise control system regulates the
speed and distance to the moving vehicle ahead
and accelerates/brakes automatically .
• -When automatic braking is not able to keep
enough d istance to a previously detected moving
vehicle up ahead, you must take control and
brake
c> page 94 , Request for driver interven
tion .
© Display
If adaptive cruise contro l is not shown in the dis
p lay, you can call it up with the
IRESETI button
c>page23.
Based on the symbo ls in the display, you can de
termine if the system is maintaining a distance to
the vehicle ahead and what that distance is .
No vehicle -No vehicle ahead was detected .
White vehicle -A vehicle ahead was detected.
92
Red vehicle -Prompt for the driver to take action
c>page 94.
Both arrows on the scale© indicate the distance
to the vehicle ahead. No arrow appears when the
vehicle is on an open road and there is no object
ahead. If an object is detected ahead, the arrow
moves on the scale .
The green zone on the scale shows the stored dis
tance . For information on changing the stored
distance, refer tor:!;>
page 93 . If the distance se
lected is too close or may soon become too close,
the arrows move into the red zone on the scale.
A WARNING
Improper use of the adaptive cruise control
can cause collisions, other accidents and seri
ous personal injuries.
- Press ing the
!SETI button when dr iving at
speeds below 20 mph (30 km/h), will auto
mat ica lly acce le rate the veh icle to 20 mph
(30 km/h), which is the minimum speed
that can be set.
(}) Tips
-If you switch the ign it ion or the adaptive
cruise control off, the set speed is erased
from the system memory.
- The electronic stabilization control (ESC)
and the anti-slip-regulation (ASR) are auto
matically turned on when the adaptive
cruise control is turned on . Both systems
cannot be turned off if the adaptive cruise
control is turned on.
Changing the speed
Applies to veh icles: wit h Aud i adapt ive c ru ise control
0
f
jJ
0
Fig. 98 Selector lever: c hang ing the speed
co N 0 :i: .., m
,-1 N
0 1-CX)
rl I.Cl U"I
,-1 I.Cl .-,
Audi adaptive cruise control and braking guard
.. To increase or reduce the speed in increments,
tap the lever up or down .
.. To increase or reduce the speed quickly,
hold
the lever up or down until the red LED ® reach
es the desired speed
<=:> page 91, fig. 97.
F ollowing any changes, the new stored speed will
be disp layed briefly in the display@r:::>
page 91,
fig. 97.
Interrupting cruise control
Appl ies to vehicles: w ith Audi a daptive cruise contro l
Fig. 99 Selec tor lever
Requirement: adaptive cruise contro l must be
switched on ¢
fig. 99 (D.
Overriding cruise control
.. To accelerate manually, press the accelerator
pedal. The message
ACC override appea rs.
.. To resume adaptive cruise control, remove your
foot from the gas pedal. The system returns again to the speed that was saved before.
.. You can save a new speed at any time by press
ing the
I SET I button ¢ page 11, fig . 4.
Canceling cruise control while driving
.. Move the lever into position @. The message
ACC standby appears. Or
.. press the brake pedal.
.. To resume the stored speed, move the lever in
to posit ion
@ .
A WARNING
Never resume the stored speed if the speed is
too high for prevailing road, traffic or weather
conditions.
Setting the distance
A pp lies to vehic les : with Aud i ada ptive cr uise con trol
Fig. 100 Selector lever: setting the distance
.. Tap the switch to display the current set dis
tance
r::::> fig. 100 .
.. To increase or reduce the d istance by incre
ments, tap the switch aga in to the left or right.
The distance between the two veh icles will
change in the instrument cluster display.
When approaching a moving vehicle up ahead,
the adaptive cruise control system brakes to
match that object's speed and then mainta ins
the stored distance.
If the vehicle ahead acceler
ates, adaptive cruise control will also accelerate
up to the stored speed .
T he higher the speed, the greater the distance in
yards (meters) ¢.& .T he
Distance 3 setting is
recommended .
T he distances provided are spec ified values. De
pending on the driving situation and the how the
vehicle ahead is driving, the actual distance may
be more or less than these target distances .
T he various symbols for the time increments ap
pear briefly in the info rmati on line @¢
page 91,
fig. 97 when you change the settings.
c:::::,_c:::::, ___ Distance 1: This setting corresponds
to a distance of 92 feet/28 meters when travel
ing at 62 mph (100 km/h), or a time interva l of 1
second.
c:::::, __ c:::::, __ Distance 2: This setting corresponds
to a distance of 118 feet/36 meters when travel
ing at 62 mph (100 km/h), or a time in terva l of
1.3 seconds.
ll>
93
Audi adaptive cruise control and braking guard
Audi braking guard
Description
Applies to vehicles: with Audi adaptive cruise co ntro l
Fig. 102 Instrument cluste r: approach warning
Braking guard uses a radar sensor. It also func
tions within the limits of the system when adap
tive cruise control is switched off .
What can Audi braking guard do?
When detected in time, the system can assess
situations when a vehicle ahead brakes suddenly
or if your own vehicle is traveling at a high speed
and approaching a vehicle up ahead that is mov
ing more slowly . Braking guard does not react if
it cannot detect the situat ion.
The system advises you of various situations:
- The
distance warning is given if you are too
close to the vehicle ahead for a long time. If the
vehicle ahead brakes sharply, you will not be
able to avoid a collision. The indicator light .
in the display comes on.
- The
approach warning is given when a detected
vehicle up ahead in your lane is moving much
more slowly than you are or if it brakes sharply .
When this warning is g iven, it may only be pos
s ib le to avoid a collision by swerving or brak ing
sharply. The indicator light . and indicator in
the display will warn you about the danger
¢ fig. 102 . You will also hear an acoustic signal.
If you do not react fast enough or do not react at
all to the situation, Braking guard will intervene
by braking and the message
braking guard inter-
;::; vention
will appear.
0 l-ex)
rl I.Cl U'"I
rl
"' 1> Th
is is not availab le in some co untries. rl
-If a collision is imminent, the system wi ll first
provide an
acute warning by briefly and sharply
apply ing the brakes.
- If you do not react to the acute warning, brak
ing guard can brake within the limits of the sys
tem. This reduces the vehicle speed in the event of a collision.
- At speeds under 20 mph (30 km/h), the system
can initiate a comp lete decelerat ion shortly be
fore a collision
ll.
- If the braking guard senses that you are not
braking hard enough when a collision is immi
nent, it can increase the braking force .
Which functions can be controlled?
You can switch braking guard and the distance/
approach warn ing on or off in the radio or MMI
¢ page 96, Settings in the radio/MM! .
A WARNING
-
Lack of attention can cause collisions, other
accidents and ser ious personal in juries. The
braking guard is an assist system and cannot
prevent a collision by itself. The driver must
always intervene. The driver is always respon
sible for braking at the correct tim e.
- Always pay close attention to traffic, even
when the braking guard is switched on. Be
ready to intervene and be ready to take
comp lete control whenever necessary. Al
ways keep the safe and legal distance be
tween your vehicle and vehicles up ahead .
- Braking guard works within limits and will
not respond outside the system limits, for
examp le when approaching a stopped veh i
cle or stationary obstacle (end of a traff ic
jam or vehicle that has broken down in traf
fic).
- Always remember that the radar sensor for
the braking guard works only within def ined
detection and range limits that may prevent
the proper detect ion of other vehicles.
- The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving vehicles up ahead may not be
,.
95
Intelligent Technology
shared, please see your contract with the
wireless te lecommunications provider and the
"About Aud i connect" tab in your vehicle's
MMI*:
I MENU ! button > Audi connect > About
Audi con nect .
Electronic Stabilization
Control (ESC)
Description
E SC helps to imp rove ro a d hold ing and vehicle
dynamics to help reduce the probab ility of skid
d ing and loss of veh icle control. It works only
when the engine is runn ing . ESC detects certain
d iffic ult dr iving situat io ns, including when the
ve hicl e is begin ning to spin (yaw) o ut of contro l
a nd h elps you to ge t the veh icle b ack u nder con
trol by se lectively braking the wheels, and/or re
ducing engine powe r and providing steering as
sistance to help hold the vehicle on the driver's intended course. The indicator light
GI in the in
strument cluster blinks when ESC is tak ing action
t o he lp you contro l the vehicle.
ESC has lim itations. It is important to remembe r
that ESC cannot overcome the laws of physics. It
will not a lways be able to help out under all con
d itions you may come up aga inst . For example,
ESC may not always be able to help you master
situations where there is a sudde n change in the
coeff ic ie nt of fr iction of the road surface. W hen
there is a se ction of dry road tha t is sudde nly cov
e red with w ater, slush o r sn ow , ESC c annot pe r
form the same way i t wou ld on the dry s urface. If
the vehicle hydrop lanes (rides on a cushion of wa
ter instead of t he road su rface), ESC wi ll not be
ab le to he lp you stee r the veh icle because contact
with the pavement has been inter rupted and the
ve hicle cannot be b raked or steered . Dur ing fast
cornering, part icu larly on w inding roads, ESC
can not always deal as effect ive ly w it h difficult
d riving situat ions than a t lowe r speeds . When
towi ng a trail er, ES C i s not able to help you re
g ai n con trol as it would if you we re not towing a
tra ile r.
A lways ad just yo ur speed and driving sty le to
road , tr affic and weathe r cond itions. ESC canno t
override the vehicle's phys ical lim its, incre ase the
170
available tract ion, or keep a vehicle on the road i f
r oad depa rt u re is a res ult of d river inattention .
Instead, ESC improves the poss ib ili ty of keeping
the ve hicle unde r contro l and on the road d uring
extreme maneuvers by using the driver's steer ing
i nputs to help keep the vehicle going in the in
tended direction . If you are traveli ng at a speed
t h at causes you to r un off the road before ESC
can p rovide any assista nce, you may not exper i
ence the benefi ts of ESC.
ESC is switched on all the time. In certa in s itua
tions when you need less tract ion, yo u can sw itch
off AS R by press ing the button
I!] c:> page 171,
fig. 152 or c> page 171 , fig. 153. Be s ure to
swi tch ASR on again w hen you no longer need
l ess trac tion.
The following systems a re in tegrated in the ESC:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking up when
braki ng . The vehicle can st ill be steered even d ur
i ng hard b raking . Apply steady p ressure to the
brake peda l. Do not pump the pedal. A p uls ing in
t h e b rake pedal indica tes th at th e system is help
i ng yo u to b rake t he ve hicle.
Brake assist system
The bra ke assist system can decrease braking dis
ta nce. It increases b raking powe r whe n the dr iver
presses t he br ake peda l quickly i n emergency sit
u at io ns. Yo u must pre ss and ho ld the bra ke peda l
u nt il t he s itu at ion is ove r. In vehicles wi th adap
tive cr uise con trol *, the brake assist sys tem is
more sensitive if t he di stance detected to the ve
h icle ahead is too sma ll.
Anti-slip regulation (ASR)
ASR redu ces engine powe r whe n the dr ive whee ls
begin to spi n and a da pts the fo rce to the road
con ditio ns. Thi s ma kes it easier to s tart, acce le r
ate and d rive up hills .
Electronic differential lock (EDL)
The ED L brakes w heels that are spi nning and
t ra nsfe rs the dr ive power to the ot her dr ive
whee l or w heels if the vehicle is equ ipped with
a ll- wheel drive*. This function is not avai lab le at
h ighe r speeds. .,..
Intelligent Technology
The fo llowing s ituations are exceptions where it
may be useful to switch on sport mod e to a llow
the wheels to sp in : -
Rock ing the vehicle to free it when it is stuck
- Dr iv ing in deep snow or o n loose g ro und
- Dr iving with snow chains
Sport mode on ESC/ASR off Sport mode off or
ESC/ASRon
Beha vior
The ESC and ASR stabiliza- The stabilization funct ion is The f ull stabilization fun c-
t ion f un ct ions are lim ited not availab
le ¢ ,&. . ESC and
tion of the ESC and ASR is
¢ .&. .
ASR are switched off. ava ilab le aga in.
Op era tion Press the I 1> OFF I button Press and hold the !1> O FFI Press the I,, OFF I button
briefly . button longer than 3 sec- again.
onds .
In dicato r II turns on.
• and lf'lii•li~ turn on . II turns off or II and
light s lf'lii•l~~ turn off.
Driv er m es- Stabilization contr ol (E S C): Stabilization control (ESC ): Stabilization control
s age s Sport. Warning! Restri cted off . Warning ! Re stri cted (ESC
): On
s t a bilit y stabilit y
It is only possible to t urn off the ASR up to 30
mph (SO km/h) fo r vehicles w ith front wheel
d rive. At about 45 mph (70 km/h) it automatical
ly tu rns on again. It is possible to turn off the
ASR at any speed for vehicles w ith all whee l
drive .
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 . The driving
wheels co uld spi n and the vehicle could
swerve , espec ia lly on s lick o r slippery road
s ur faces.
- The re is no vehicle stab ilizat ion when ESC/
ASR a re switched off.
(D Tips
ESC/ASR cannot be sw itched off or sport
mode cannot be switched on when cruise co n
t rol or adaptive cruise control* is switched on .
172
Braking
What affects braking efficiency?
New brake pads
D ur ing the first 250 miles (400 km) , new brake
pads do not possess their full b raking effe ct, they
have to be "b roken in" first ¢,&. . You can com
pensa te for th is slightly reduced b raking power
by p ushing harder on the brake pedal. Avo id
heavy braking loads dur ing the break-in period .
Operating conditions and driving habits
The brakes on today's automobi les are s till sub
je ct to wear, depending large ly on operating con
dit ions and driving habits ¢.&. . On vehi cles that
a re either driven mostly i n stop-and-go city traf
fic or are drive n hard, the b rake pads sho uld be
checked by your authorized A udi dealer more of
ten than specified in the
Wa rrant y & Mainte
nance book let .
Failure to have your brake pads
i nspected can result in reduced brake perform
ance .
On steep slopes, you should use the brak ing ef
fect of the engine . Th is way, you prevent unnec
essary wear on the brake system . If you must use
your brakes, do not ho ld the bra kes down contin
u ously. P ump the bra kes at inte rvals.
.... N
0 I-co ....
Noises may occur when braking depend ing on the
speed, braking force and outside conditions such
as temperature and humidity.
Eff ect of wat er and road salt
In ce rtain situations, for example after dr iving
through water, in heavy ra in, afte r ove rnig ht con
densat io n or after washing your car, the braking
effect can be reduced by moisture or ice on the
brake rotors and brake pads. The brakes must be
dried first with a few careful brake applications .
At highe r speeds and with the windsh ie ld wipers
turned on, the brake pads press against the brake rotors for a short amount of time . This occurs at
regular intervals without the driver noticing and
provides for better brake response time under
wet conditions.
The effectiveness of the brakes can be reduced
when the vehicle is driven on a salt-covered road and the brakes are not used . Likewise, you clean
off accumu lated salt coating from brake discs
and pads with a few cautious applications of the
brake ~,&. .
Cor ro sion
There may be a tendency for dirt to b uild up on
the brake pads and corros ion to form on the discs
if the car is not driven regularly or only for short
tr ips with little use of the brakes .
If the brakes are not used frequently, or if corro
sion has formed on the discs, it is adv isable to
clean off the pads and discs by braking firmly a
few t imes from a moderately high speed
c:> ,&. .
Fa ults in the brake sy stem
If you should notice a sudden increase in brake
pedal travel, then one of the two brake circuits
may have failed
c:> ,&. .
Low brak e fluid level
M alfunct ions can occur in the brake system if the
b rake fluid leve l is too low . The brake fluid level
is monitored e lectronically .
Intelligent Technology
Brake booster
The brake boos ter increases the press ure that
you generate with the brake peda l.
It works only
when the eng ine is running
. c:> .&.
Brake lining wear status
B rake lining wea r may be chec ked by visua l in
spe ct ion of the condi tion of the brake pads
t hr ough the openings in the wheel. If necessary,
the wheel may be removed for this inspection
c:> page 2 26, Replacing wheels .
_8 WARNING "'---
-New brake pads don't have the best stop
ping power and m ust be "broken-in" during
the initial 250 miles (400 kilometers). You can compensate for this by p ressing the
brake pedal more firmly . This also app lies
later when new pads are installed.
-
- You shou ld pe rform braking maneuvers for
the purpose of cleaning the brake system
only i f road condit ions pe rmit . Other road
users m ust not be put at r is k -you may
cause an ac ciden t!
- Before descending a s teep g rade , reduce
speed and sh ift tr ansmi ssion into a lower
gear or lower dr iving range. Do not r ide the
brakes or hold the pedal down too long or
too often. This co uld cause the brakes to get
hot and dimin ish braking eff ic iency.
- Do not "ride the bra kes" by resting your foot
on the pedal when you do not intend to brake. This may cause the brakes to over
heat, premature wear and increased stop
ping distance.
- Unde r ce rtain climatic and operating condi
tions such as passing through water, driving in heavy rain or after wash ing the veh icle,
the effectiveness o f the brakes ca n be re
duced. In winter, ice can accumu late on the
brake pads, lin ings , d is c s and dr ums . Care
fu lly apply br akes for a test. Brakes will dry
and ice coatings will be cleaned off after a
few careful bra ke applications .
- Driving for an extended period of time on
salt -covered roads without using your
brakes can also affect braking eff iciency .
173
Intelligent Technology
Clean off accumulated salt coating from
brake discs and pads with a few caref ul
brake app lications.
- If you damage the front spoiler, or if yo u in
stall a d ifferent spoiler, be sure the air flow
to the front brakes is not obstructed. Other
wise the brake system could overheat reduc
ing the effectiveness of the entire b rake sys
tem.
- Failure of one brake c ircuit will impair the
bra king capability res ult in g in an increased
stopp ing distance. Avoid driving the vehicle
and h ave i t towe d to the ne arest author ized
Audi dealer or quali fied workshop.
- Never let the vehicle roll to a s to p wi th the
eng ine shut off.
- I f the bra ke booste r is not wor kin g, the
bra ke pe dal m ust be presse d considerably
harder to make up for the lac k of b oos ter
assistance .
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps the
driver when steering.
Power steering adapts electronically based on
the vehicle speed .
Indicator lights and mess ages
• Steering defective! Do not dri ve vehicle!
If thi s ind icator light tu rns on and stays o n and
this message appears, t he power steering may
have fa iled.
D o
not conti nue d riving. See yo ur autho riz ed
Aud i dea ler o r a q ua lified repair facility fo r assis
tance.
l;r-ij Dynamic steering : Sy stem fault! You can
c ontinue driving
If t he i ndicator lig ht t urns on and the message
appears, the steering may be more difficult to
move or mo re sens it ive than usual. The steer ing
wheel may also be a t an an gle when dr iv ing
s tra ight .
174
Drive slowly to your a uth orized Audi dea ler or
qualified workshop to have the malfunction cor
r ected.
'I-ij Dynamic steering: initializing
If this d rive r message appea rs and t he in dicator
li ght is flashing on the instr ume nt pa nel, dynam
ic steer ing * is being re ini tiali zed. After s tarting
the e ngine, t he s teer ing whee l w ill move sligh tly.
Re -initializa tion might be necessary if the steer
ing whee l was moved hard to the left and right
whi le the vehicle was not moving . T he d isp lay
goes out as soon as initiali zation is comp lete.
A WARNING
-
H ave the dynamic steering* system malfunc-
tion repaired as soon as poss ible by an au
thor ized Audi dealer or qualified workshop -
risk of acc ident!
@ Tips
- If the . or 'I-ij indicator light only stays on
for a sho rt time, you may cont inue driving.
- The dynamic steerin g* stab ility systems a re
not ava ilable in the event of a system mal
function .
- For add itiona l information on dynamic
steeri ng*, refer to
<=> page 102.
Driving with your
quattro
Applies to vehicles: with all-whee l dr ive
With all-wheel drive, all four wheels are driven.
General informat ion
With a ll-w heel d rive, power is distri buted to a ll
fo ur wheels. This happens automat ica lly depend
i ng on your d riving style a nd the roa d conditions
at the t ime . See also
c> page 170.
A center d ifferen tial d istr ibu tes the dr iving powe r
variab ly to the front and rear ax le.
It works to
gether w it h select ive whee l torque contro l, w hich
ac tiv ates w hen d rivi ng thro ugh curves
<=> page 171. With the spo rt different ial *, power
distribution to the rear wheels is variable and can
be adjusted with drive select<::>
page 102. .,.