warning light AUDI A5 CABRIOLET 2017 Repair Manual

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-Take the child restraint off the front passen­
ger seat and install it properly at one of the
rear seat positions if the
PASSENGER AIR
BAG OFF
light does not stay on.
- Have the airbag system inspected by your
authorized Audi dealer immediately.
Secure unused safety belts on the rear seat
Fig. 154 Schemat ic overv iew: keep unused s-afety belts
away from children in chil d safety seats. @-oute r rear
sa fety belt
If a chi ld safety seat is used on the rear bench,
especially with LA TCH universal lower anchorag­
es, the unused safety belts
must be secured so
that the child in the child restraint cannot reach
them
c::> ,& .
-Guide the safety belt webbing @behind the
head restraint of the seat where the child re­
straint is installed
c::> fig . 154. When doing so,
do not engage the convertible locking retrac­
tor! You should not hear a "clicking" sound
when winding up the safety belt .
- Let the belt retractor wind up the safety belt
webbing .
A WARNING
A child in a child safety seat installed with the
LATCH lower anchorages or with the standard
safety belt or a child in a booste r seat on the
rear seat could play with unused rear seat
safety belts and become entangled. This
cou ld cause the chi ld serious personal injury
and even death.
- Always secure unused rear seat safety belts
out of reach of children in child seats such
as by proper ly routing them aro und the
Child safety
head restraint of the seat where the child
restraint is installed .
- Never activate the convertible locking re­
tractor when routing the safety belts around
the head restraints.
Child seats
Infant seats
Babies and infants up to about one year old and
20 lbs. or
9 kg need special rearward-facing
child restraints that support the back , neck and
head in a crash.
Fig. 155 Schematic overview: rearward -facing infant seat,
p roper ly insta lled o n the rear seat
... When using the vehicle safety belt to install a
child safety seat, you must first activate the
convertib le locking retractor on the safety belt
to prevent the child safety seat from moving
c::>poge 159 or install the seat using the LATCH
attachments.
... Push the ch ild safety seat down with your full
weight to get the safety belt really tight so that
the seat cannot move forward or sideways more than one inch (2 .5 cm) .
... Secure unused safety belts on the rear seat
c::>page 155.
Infants up to about one year (20 lbs. or 9 kg) are
best protected in special infant carriers and child
safety seats designed for their age group . Many
experts believe that infants and small children
shou ld ride only in special restraints in which the
child faces the back of the vehicle. These infant
seats support the baby's back, neck and head in a
crash
r=;, fig. 155 . .,..
155

Child safety
The airbag on the passenger side makes the front
seat a potentially dangerous p lace for a child to
ride. The front seat is not the safest place for a
child in a forward-facing child seat. It is a very
dangerous place for an infant or a larger child in
a rearward-fac ing seat.
A WARNING
Not using a ch ild safety seat, using the wrong
child safety seat or improperly installing a
child restra int increases the r isk of serious
personal inju ry and death in a crash.
- Never install rearward-fac ing ch ild safety
seats or infant carriers on the front passen­ ger seat -even w ith an Advanced A irbag Sys­
tem. A child will be seriously injured and can
be ki lled when the inflating airbag hits the
child safety seat or infant carrier with great
force and smashes the child safety seat and
child against the backrest, center armrest,
door or roof
c::, page 131, Child restraints on
the front seat -some important things to
know.
-Always install rearward-fac ing ch ild safety
seats or infant carriers on the rear seat.
- Never install a rearward-facing child re­
straint in the forward-facing direction. Such restra ints are des igned for the special needs
of infants and very small ch ild ren and can­
not protect them properly if the seat is for­
ward- facing.
- If you mus t install a rearward fac ing ch ild
safe ty seat on the front passenger seat be­
ca use of exceptiona l circumstances and the
PASSENGER AIR BAG OFF light does not
come on and stay on, immediate ly install
the rearward-facing child safety seat in a
rear seat ing position and have the airbag
system inspected by your author ized Audi
dealer.
- Always read and heed all WARNINGS when­
ever using a child restrained in a veh icle is
being used
c:> page 122, Safety belts,
c:> page 130, Airbag system and
9 page 150, Important information.
156
Convertible child safety seats
Properly used convertible child safety seats can
help protect toddlers and children over age one
who weigh between 20 and 40 lbs. (9 and 18 kg)
in a crash.
Fig . 156 Schemat ic overv iew : installat ion of the attach ­
ments applicable to a LA TCH seat
Fig. 157 Schemat ic overv iew: installat ion of the seat using
the vehicle's safety belt system
.. When using the vehicle safety belt to install a
child safety seat, you must first activate the
convertib le locking retractor on the safety belt
to prevent the child safety seat from moving
c:> page 159 or install the seat using the LATCH
attachments .
.. Push the chi ld safety seat down wi th your full
we igh t to get the safe ty belt really tight so that
the seat cannot move forward or sideways
more than one inch (2 .5 cm)
c:>page 159.
.. Secure unused safety belts on the rear seat
c:> page 155.
A toddler or child is usua lly too la rge for an in­
fant restraint if it is more than one year old and
weighs more than 20 lbs . (9 kg).
Toddlers a nd chi ldren who are older than one
year up to about 4 years old and weigh more than 20 lbs . (9 kg) up to 40 lbs. (18 kg) must always ..,.

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be properly restrained in a chi ld safety seat certi­
fied for their size and weight¢
fig. 156 and
¢fig . 157.
The airbag on the passenger side makes the front
seat a potentia lly dangerous p lace for a child to
ride. The front seat is not the safest place for a
child in a forward-facing child safety seat . It is a
very dangerous place for an infant or a larger
child in a rearward-facing seat.
A WARNING
Not using a ch ild safety seat, using the wrong
child safety seat or improperly installing a
child restra int increases the r isk of serious
personal inju ry and death in a collis ion or oth­
er emergency situation.
- Children on the front seat of any car, even
with Advanced Airbags, can be seriously in­
jured or even killed when an a irbag inflates.
A chi ld in a rearward-facing child safety seat
installed on the front passenger seat wi ll be
seriously injured and can be killed if the
front airbag inflates -even with an Ad­
vanced Airbag System.
- The inflating a irbag w ill hit the child safety
seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, center armrest, door
or roof .
- Always install rearward-fac ing ch ild safety
seats on the rear seat .
- If you must install a rearward fac ing ch ild
safety seat on the front passenger seat be­ cause of exceptional circumstances and the
PASSENGER AIR BAG OFF light does not
come on and stay on, immed iate ly install
the rearward-facing child safety seat in a
rear seating position and have the airbag
system inspected by your authorized Audi
dealer .
- The rear side of the child safety seat should
be positioned as close as possible to the
backrest on the vehicle seat .
-Always read and heed all WARNINGS when ­
ever using a child restrained in a vehicle is
being used ¢
page 122, Safety belts,
Child safety
¢ page 130 , Airbag system and
¢ page 150, Important information.
A WARNING
-If exceptional c ircumstances requ ire the use
of a forward-facing ch ild restraint on the
front passenger's seat, the child's safety and well-being requ ire that the following special
p recautions be taken:
- Make sure the forward-fac ing seat has been
designed and certified by its manufacturer
for use on a front seat with a passenger
front and side ai rbag.
- Always follow the manufacturer's instruc­
tions provided with the child safety seat o r
infant carrie r.
- Always move the front passenger seat into
the rea rmost pos ition of the passenger
seat's fore and aft adjustment range, and as
far away from the airbag as possib le before
installing the child restraint.
- Always make sure that nothing preven ts the
front passenger's seat from being moved to
the rearmost position in its fore and aft ad ·
justment range.
- Always make sure the backrest is in an up­
right position.
- Make sure that the
PASSENGER AIR BAG
OFF
li ght comes on and stays on all the time
whenever the ignit ion is switched on .
- If the light does not stay on, perform the
checks ¢
page 140, Monitoring the Ad­
vanced Airbag System.
- Take the child restraint off the front passen­
ge r seat and install it properly at one of the
rear seat positions if the
PA SS ENGER AIR
BAG OFF
light does not stay on whenever
the ignition is switched on.
157

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& WARNING
Not using a booster seat, using the booster
seat improperly, incorrectly installing a boos­
ter seat or using the vehicle safety belt im­
properly increases the risk of serious personal
injury and death in a collision or other emer­
gency situation. To help reduce the risk of se­
r ious personal injury and/or death:
- The shoulder belt must lie as close to the
center of the child's collar bone as possible
and must lie flat and snug on the upper
body.
It must neve r lie across the th roat or
neck. The lap belt must lie across the pelv is
and never across the stomach or abdomen.
Make sure the belt lies flat and snug. Pull on
the belt to tighten if necessary .
- Failure to proper ly route safety belts over a
child's body will cause severe injuries in an
accident or other emergency situation
¢ page 122.
-The rear side of the child safety seat should
be positioned as close as possible to the
backrest on the vehicle seat.
- Children on the front seat of any car, even
with Advanced Airbags, can be seriously in­
jured or even killed when an a irbag inflates.
- Never let a child stand or kneel on any seat.
- Never let a child ride in the cargo area of
your vehicle.
- Always remember that a child leaning for­
ward, sitting sideways or out of position in
any way during an accident can be struck by
a deploying airbag. This will result in serious
personal injury or death.
- If you must install a booster seat on the
front passenger seat because of exceptional
c ircumstances the
PA SSENGER AIR B AG
OFF
light must come on and stay on, when­
ever the ignition is switched on.
- If the
PASSEN GER AIR BAG OFF light does
not come on and stay on, perform the
checks described ¢
page 140, Monitoring
the Advanced Airbag System.
- Take the ch ild restraint off the front passen­
ger seat and install it properly at one of the
rea r seat positions if the
PASSENGER AIR
-
Ch ild safety
BAG O FF light does not stay on whenever
the ignition is switched on.
- Always read and heed all WARNINGS when­
ever us ing a child restrained in a vehicle is
be ing used
c> page 122, Safety belts,
c> page 130, Airbag system and
c> page 150, Important information.
Securing child seats
Securing a child safety seat using a safety
belt
Safety belts for the rear seats and the front pas­
senger's seat can be locked with the convertible
locking retractor to properly secure child safety
seats.
The safety belts emergency locking retractors for
the rear seats safety be lts and for the front pas­
senger's seat safety be lt have a convertible lock ­
ing retractor for child restraints. The safety be lt
must be locked so that belt webb ing cannot un­
reel. The retractor ca n be activated to lock the
safety belt and prevent the safety belt webbing
from loosening up dur ing norma l driving. A ch ild
safety seat can on ly be prope rly insta lled when
the safety belt is locked so that the c hild and
c h ild safety seat will stay in place .
Always remembe r: Even though your veh icle is
equipped with an Advanced Airbag system, all
children, especia lly those 12 yea rs and younger,
shou ld a lways ride in the back seat p roperly re ­
strained for their age and weight.
& WARNING
=
Improperly installed child safety seats in-
crease the risk of serious personal injury and
death in a co llision.
- Always make sure that the safety be lt re­
tractor is locked when installing a child
safety seat. An un locked safety be lt retrac­
tor cannot hold the ch ild safety seat in place
during normal driving or in a crash.
- Always buckle the child safety seat firmly in
place even if a ch ild is not sitt ing in it. A
loose child safety seat can fly a round dur ing
a sudden stop or in a co llision.
~
159

Child safety
-If the backrest is not securely latched, the
child and the child restraint will be thrown
forward together with the backrest and will
strike parts of the vehicle interior. The child
can be seriously injured or killed .
- Never install rearward-facing child safety
seats or infant carriers on the front passen ­
ger seat . A child will be seriously injured and
can be killed when the passenger airbag in­
flates.
- The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, center armrest, door
or roof.
- Always install rearward-facing child safety
seats or infant carriers on the rear seat.
- Forward-facing child safety seats or infant
carriers installed on the front passenger's
seat may interfere with the deployment of
the airbag and cause serious injury to the
child.
- It is safer to install a forward-facing child
safety seat on the rear seat.
- Always read and heed all WARNINGS when­ ever using a child restrained in a vehicle is
being used
9 page 150. Special precautions
apply when installing a child safety seat on
the front passenger seat
9 page 131, Child
restraints on the front seat -some impor­
tant things to know .
A WARNING
Always take special precautions if you must
install a forward or rearward-facing child re­
straint on the front passenger's seat in excep­
tional situations:
- Whenever a forward or rearward-facing
child restraint is installed on the front pas­
senger seat, the
PASSENGER AIR BAG OFF
light must come on and stay on whenever
the ignition is switched on.
- If the PASSENGER AIR BAG OFF light does
not come on and stay on, perform the
checks described
9 page 140, Monitoring
the Advanced Airbag System.
160
-
- Take the child restraint off the front passen­
ger seat and install it properly at one of the
rear seat positions if the
PASSENGER AIR
BAG OFF
light does not stay on whenever
the ignition is switched on .
- Improper installation of child restraints can
reduce their effectiveness or even prevent
them from providing any protection.
- An improperly installed child restraint can
interfere with the airbag as it deploys and
seriously injure or even kill the child .
-Always carefully follow the manufacturer's instructions provided with the child safety
seat or carrier .
- Never place additional items on the seat that can increase the total weight registered
by the weight-sensing mat and can cause in­
jury in a crash.
A WARNING
Forward-facing child restraints:
- Always make sure the forward-facing seat
has been designed and certified by its man­
ufacturer for use on a front seat with a pas­
senger front and side airbag.
- Never put the forward-facing child restraint
up, against or very near the instrument pan­
el.
-Always move the passenger seat into its
rearmost position in the seat's fore and aft
adjustment range, as far away from the air­
bag as possible before installing the for­
ward-facing child restraint. The backrest
must be adjusted to an upright position.
- Make sure that the
PASSENGER AIR BAG
OFF
light comes on and stays on all the time
whenever the ignition is switched on.
A WARNING
Rearward-facing child restraints:
- A child in a rearward-facing child safety seat
installed on the front passenger seat will be
seriously injured and can be killed if the
front airbag inflates - even with an Ad -
vanced Airbag System .
~

-The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, center armrest, door
or roof .
- Always be especially careful if you must in­
stall a rearward facing child safety seat on
the front passenger seat in exceptional c ir­
cumstances.
-A tight tether strap on a rearward-facing child restraint attached to the front passen­
ger seat can put too much pressu re on the
we ight-mat in the seat and register a heavi­
er weight in the Advanced Ai rbag System.
T he heavier we ight registered can make the
system work as though an adult were on the
seat and deploy the Advanced Airbag when
it must be suppressed causing serious or
even fatal injury to the child.
- Make sure that the
PASS ENG ER AIR B AG
OFF
light comes on and stays on all the time
whenever the ignition is switched on.
- If the
PA SSENGER AIR BAG OFF light does
not come on and stay on, immediately in­
stall the rearward-facing child safety seat in a rear seating position and have the a irbag
system inspected by your author ized Audi
dealer.
Activating the convertible locking retractor
Use the convertible locking retractor to secure a
child restraint.
Always heed the child safety seat manufacturer's
instructions when installing a child restraint in
your veh icle . T o act ivate the convertible locking
retractor:
.. Place the child restraint on a seat, preferab ly
on the rear seat.
.. Slowly pull the belt all the way out .
.. Route it around or through the ch ild rest raint
belt path
Q .&, .
.. Push the child safety seat down with your fu ll
weight to get the safety be lt rea lly t ight .
a:,
~ .. Insert the belt tongue into the buckle for that
N ~ seating position .
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Ch ild safety
.. Guide the safety belt back into the retractor un­
til the belt lies flat and snug on the child safety
seat.
.. You shou ld hear a "cl icking" noise as the belt
w inds back into the inertia reel. Test the con­
vert ible lock ing retractor by pulling on the belt.
You should no longer be able to pull the belt out of the retractor . The convertib le locking re­
tracto r is now activated.
.. Ma ke sure that t he red release bu tton is facing
away from the child restraint so that it can be
unbuckled quickly .
.. Pull on the belt to make sure the safety belt is
properly t ight and fastened so that the seat
cannot move forward or sideways more than
one inch (2.5 cm).
A WARNING
Using the wrong ch ild restraint or an improp­
e rly installed child restra int can cause serious
personal injury or death in a crash .
- Always make sure that the safety belt re­
tractor is locked when installing a child
safety seat. An unlocked safety belt retrac­
tor cannot hold the ch ild safety sea t in place
during normal driving or in a crash.
- Always buckle the child safety seat fi rm ly in
p lace even if a ch ild is not si tting in it. A
loose child safety seat can fly around dur ing
a sudden stop or in a crash.
- Always make sure the seat backrest to which
the child restraint is installed is in an up­ right position and securely latched into
p lace and cannot fo ld forward. Otherw ise,
the seatback with the child safety seat at­
tached to it could fly forward in the event of
an accident or other emergency s ituation .
- Always read and heed all WARNINGS when­
ever using a child restrained in a vehicle is
be ing used
Q page 150 . Special precautions
apply when install ing a child safety seat on
the front passenge r seat
Q page 131, Child
restraint s on the front seat -some impor­
tant things to know .
161

Intelligent Technology Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road ho lding and vehicle
dynamics to help reduce the probability of skid­
ding and loss of vehicle control. It works only
when the engine is runn ing . ESC detects certain
d ifficult driving situat ions, including when the
vehicle is beginn ing to spin (yaw) out of control
and helps you to get the veh icle back under con­
tro l by selectively braking the wheels , and/or re­
ducing engine powe r and provid ing steering as­
sistance to help ho ld the veh icle on the driver 's
intended course. The indicator light
bJ in the in­
strument cluster blinks when ESC is taking action
to help you contro l th e vehicl e.
The follow ing systems a re integr ated in the ESC:
Anti -lock braking system (ABS )
ABS preve nts the wheels from lock ing up when
b raking . The ve hicle can still be stee red even dur­
in g ha rd brak ing . Apply steady pressure to the
b rake pedal. Do not p ump the pedal. A pu lsing in
the brake pedal indicates tha t the system is help ­
ing you to brake the vehicle .
Brake assist system
The brake assist sys tem can dec rease braking dis­
tance .
It increases brak ing power when the d rive r
pr esses the brake pedal q uickly in eme rge ncy sit ­
uations . You m ust press and hold the b rake pedal
unti l the situation is over . In vehicles with adap ­
tive cruise control* , the brake assist system is
mo re sensitive if the distance det ected to the ve­
h icle ahead is too small.
Anti -slip regulation (ASR)
ASR red uces eng ine power when the drive wheels
begin to spin and adapts the force to the road
conditions. This makes it easier to start, acceler­
ate and dr ive up h ills.
gi Electronic differential lock (EDL ) ...... N
~ The ED L br ak es w heels that a re spi nnin g and
8 trans fers the drive power to the othe r drive LL 00
Intellig ent Technology
whee l or wheels if the vehicle is equ ipped with
all-wheel drive*. This function is not avai lable at
highe r speeds.
In extreme cases , EDL automat ic all y swi tches off
to help keep t he b rake on the braked wheel from
overheating . EDL will switch on again automati­
ca lly when cond itions have returned to normal.
Steering recommendation
T he ES C helps to s tabilize the vehicle by changing
the s teering torque.
In veh icles with dynamic steer ing*, ESC a lso
helps to stab ilize the steer ing in crit ica l sit ua­
tions.
Electronic interaxle differenti al lock */
selective wheel torque control*
T he elect ronic inte raxle d iffere ntial lo ck (front
whee l dr ive) o r the sele ct ive whee l torque co ntro l
(a ll w heel d rive) operates when driving thro ugh
cu rves. The front wheel on the inside of the curve
o r both wheels on the inside of the curve are
braked selectively as needed. This allows more
precise driving in curves . The applicab le system
may not activate when driving in wet or snowy
condit ions .
A WARNING
--The ESC and i ts integrated systems ca nnot
overcome the laws of physics. This is espe­
cially importa nt on slippery or wet roads. If
the systems begin act ing to sta biliz e your
veh icle, you shou ld immedi ate ly change
your speed to match the road and traffic conditions. Do not let the increased safety
provided by these systems tempt yo u to
take risks. Doing so will increase the risk of
a loss of vehicle control, collision and seri­
ous personal injur ies .
- Always adapt your speed to road, traffic and
weather conditions . The risk of losing con ­
trol of the vehicle increases when driv ing
too fast, especially through curves and o n
slippe ry o r wet roads , and whe n driving too
close to ve hicl es up ahea d. The ESC and its
integ ra t ed systems cannot always preven t
collis ions -the re is s till a risk o f accidents!
167

Intelligent Technology
-Always acce le rate with special care on even,
smoot h surfaces such as those that are wet
o r covered with ice and s now. The dr ive
wheels can s pin even with these ass istance
systems that cannot always h elp to reduce
t h e risk of loss of v ehicle con trol. t
ir es. Diff eren t tire si zes c an lead to a red uc­
t ion in en gine power .
- Y ou may hear noises whe n the sys tem s de­
sc ribe d are working .
{D) Tips
-ABS and ASR on ly work co rrectly whe n all
fo ur whee ls are e quipped w ith ide ntica l
Switching on/off
£SC turns on automatically when you start the engine .
Fig . 163 Versio n A: lower cente r co nso le,~ OFF button Fig. 164 Version B : upper center co nso le, ~ OFF button
T he ESC is des igned to function in leve ls. Depe nd­
i ng on t he level th at i s sele cted, the s tabili zation
f unc tion of the E SC is limited or sw itched off. The
amo unt of stabi liza tio n con trol will d iffer de ­
pendi ng on the level. -
Roc king the ve hicle to free it w hen i t is stuck
- Dr iving in d eep snow or o n loose g ro und
- Dr iving with snow chains
Th e fo llo wing s itu ations are ex cep tion s where i t
may be usef ul to sw itch on s po rt mo de to allow
the wheels to spin:
Sport mode on ESC/ASR off
Behavior
T he ESC and ASR stabiliza -
The sta bilization funct ion is
tion f unct io ns are limite d not available
¢ &
. ES C and
¢ &. . ASR are switched off.
Operation Press the I.$ OFF I b utton P re ss and hol d the l.$ OF FI
briefly . button longer than 3 sec-
onds .
Indicator II turns on. Iii and lf111•)H turn on.
lights
Driver mes- Stabilization control (ESC ): Stabilization control (ESC ):
sages Sport. Warning! Restricted off . Warning! Restricted
stab ility stability
168
Sport mode off or
ESC /ASR on
T he f ull stabilization func -
tion of the ESC an d ASR is
avai lab le aga in.
Press the I.$ OFF I but ton
a g ai n.
II turns off or II and
lf11ft)H turn off .
Stabilization control
(ESC ): On
N N ><'. 00 <D

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Fa ults in the brake system
If yo u should notice a sudden increase i n brake
pedal travel, then one of the two brake circuits
may have failed
¢ .&. .
Low brake fluid level
Malf unct ions can occur in the bra ke system if the
b rake fl uid leve l is too low. The brake fluid level
i s monitored e lectronica lly .
Bra ke booste r
The brake booster increases the pressure that
you generate with the brake pedal.
It works on ly
when the engine is run ning
.¢ .&.
Bra ke lining we ar status
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
through the open ings in the wheel. If necessary,
the wheel may be removed for this inspection
¢ page 228, Replacing wheels.
A WARNING
- New bra ke pads don't have the best stop­
ping power and must be "bro ken- in" dur ing
the init ia l 250 m iles (400 kilometers). Yo u
can compensate for th is by press ing the
brake pedal more firmly. This a lso applies
later when new pads are installed.
- Yo u should perfo rm braking maneuvers for
the p urpose of clean ing the brake system
only if road conditions permit. Other road
users must not be put at risk -you may
cause an accident!
- Before descending a steep grade, reduce
speed and shift t ransm iss ion into a lower
gear or lowe r driving range. Do not ride the
brakes or hold the pedal down too long or
too often. This could ca use the brakes to get
hot and diminish brak ing efficie ncy.
- Do not "r ide t he b rakes" by resting your foot
on the pe dal when yo u do not inten d to
bra ke. This may cause the bra kes to over­
heat, premat ure wear and increased stop ­
ping distance.
- Under certa in climatic and operating condi­
tio ns such as passing thro ugh water, driving
in heavy rain or after washing the vehicle,
Intellig ent Technology
the effectiveness o f the brakes can be re­
duced. In winter, ice can accum ulate on the
brake pads, lin ings, d iscs and drums . Care­
fu lly apply brakes for a test . Brakes will dry
and ice coat ings will be cleaned off after a
few ca refu l brake applications .
- Driving for an extended period of t ime on
salt-covered roads without usi ng your
b rakes can also affect braking eff iciency.
Clea n off acc umul ated salt coat ing from
b rake discs an d pa ds w ith a few careful
b rake appli cat ions .
- I f you d amage the front spoile r, or if you in­
s t all a different spoiler, be s ure the a ir flow
to the front brakes is not obstruc ted. Other­
wise the brake system could overheat reduc­ ing the effectiveness of t he ent ire bra ke sys­
tem.
- Fai lure of one brake circuit w ill impa ir the
braking capability resulting in an increased
stopping distance . Avoid driving the vehicle
and have it towed to the nearest authorized
Aud i dealer or qualified workshop.
- Never let the vehicle roll to a stop with the
engine shut off.
- If the brake booster is not working, the
brake pedal must be pressed cons iderab ly
ha rder to make up fo r the lack of booste r
assis tance .
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps the
driver when steering.
Power steer ing adapts electronically based on
the vehicle speed.
Indicator lights and messages
• Steering defe ctive! Do not drive vehicle!
If this indicato r light turns on and stays on and
t hi s message appears, the powe r steering may
have failed.
171

Intelligent Technology
Do not contin ue driving . See yo ur authori zed
Aud i dea ler or a qua lified repair facility for assis­
tance.
'I@ Dynamic steering : Sy stem fault! You can
cont inue d riv ing
If the indi cator lig ht t urns on and the message
appears, the steering m ay be more difficul t to
move or mo re sensit ive than usual. The steering
wheel may also be at an angle when dr iving
straight .
Dr ive s low ly to your author ized A udi dealer or
qu alified wor kshop to have the ma lfunction co r­
rected .
l;:r-ij Dynamic steering : initializing
If th is driver message appears and the ind icator
light is flas hing on the instrument panel, dynam­
ic stee ring* is be ing rein itia lized . Afte r start ing
the engine , the steer ing wheel will move s light ly.
Re-i nitializ ation m igh t b e necessa ry if the s teer­
i n g wheel was moved hard to the left and r igh t
while the veh icle was not moving. The disp lay
goes out as soon as initia lization is complete.
A WARNING
Have the dynamic steering* system malfunc­
tion repaired as soon as possible by an au­
thorized Audi dealer or qualified workshop -
r isk of accident!
(D Tips
- If the . or l;pij indicator light only stays on
fo r a short time, you may continue driving.
- The dynamic steering* stability systems are
not available in the event of a system mal­
funct ion.
- Fo r additional informat ion on dynamic
steering*, refer to
¢ page 101.
172
-
Driving with your
quattro
App lies to : vehicles wit h all -w hee l drive
With all-wheel drive , all four wheels ore driven .
General information
With a ll-wheel d rive, power is distrib uted to a ll
fo ur wheels. Th is happens automat ica lly depend­
i ng on your driving style and the road conditions
at the t ime . See also
¢ page 167.
A center d ifferential distributes the driving powe r
variably to the front and rear axle. It works to­
gether w ith select ive whee l torque contro l, wh ic h
activates when d rivi ng through curves
¢ page 167. With the spor t different ial*, power
dist ribution to the rear wheels is var iable and can
be adjusted wi th d rive select ¢
page 101 .
The all-whee l dr ive concept is designed for hig h
engine powe r. Your vehicle is except ionally pow­
e rfu l an d has excellent driving cha racteristics
bot h unde r no rmal d riving condi tions and o n
snow and i ce. A lways read and follow safety pre­
ca utions
~ ..&. .
Winter tires
When dr iving in the winter, yo ur vehicle with all­
whee l dr ive has a n advantage, even with regu la r
t ir es. In w inte r road cond it ions i t may be advisa­
ble to mo unt win ter tires (o r all-se ason tires) for
i mproved driveability an d braking: these ti res
must be mo unted on
all four whee ls. See also
¢ page 2 22, Winter tires.
Tire chains
Where tire ch ains are mandatory on certain
r oads, t his normally also applies to vehicles wi th
a ll- wheel drive ¢
page 222, Snow chains .
Replacing wheels/tires
Vehicles with all-w heel d rive mus t always have
ti res of the same size. Also avoid tires with diffe r­
en t tread dep ths. Fo r d eta ils see page
¢ page 21 4, New tires or wheels. liJJ>