AUDI A3 2012 Owner´s Manual

-Never attach two child restraint systems
to one tether strap or tether anchorage.
- Never attach a tether strap to a tie-down
hook in the luggage compartment.
- Never use child restraint tether ancho­
rages to secure safety belts or other
kinds of occupant restraints.
- Never secure or attach any luggage or
other items to the LATCH lower ancho­
rages or to the tether anchors.
-If a tether or other strap is used to at­
tach a child restraint to the front passen­ ger seat, make sure that it is not so
t ight , that it causes the weight-sensi ng
mat to measure more weight than is ac ­
tually on the seat .
- The heav ier weight reg istered can make
the Advanced Airbag System work as
though an adult were on the seat and de­
ploy the Advanced Ai rbag when it must
be s uppressed causing serious o r even
f atal injury to the child.
- If you mus t install a rearward facing
child safe ty seat o n the fron t passenger
seat beca use of exceptional circ ums tan­
ces and the
PASSENGER AIR BAG OFF
light does not come on and stay on , im­
med iately install the rear -facing child
safety seat in a rear seating position and
have the a irbag system inspected by you r
Audi dealer.
Installing the upper tether strap on the
anchorage
F ig. 1 49 Tether strap : prope r ro utin g and mountin g
Child S afety 159
Fig. 1 50 Tet her st rap: prope r routing an d mounti ng
Installing the tether str ap
.. Release or deploy the te ther s trap on the
child restraint according to the child re ­
straint manufacture r's instructions .
.. Guide the upper tether st rap
und er the rear
head restra int and into the rea r cargo a rea
r=;, fig . 150 (ra ise the head restraint if neces ­
sary) .
.. Slide the tether strap hook over the anchor
bracket.
.. Pull on the tether st rap hook so th at the
spring cat ch of the hook engages .
.. Tighten the tether strap firmly follow ing
the child restra int manufacturer's inst ruc ­
tions.
Relea sing the tether strap
.. Loosen the tension following the ch ild re­
strain t manufac turer 's ins truc tions .
.. Depress the spring catch on the hook and
release it from the anchorage .
(D Note
If you leave the child restraint w ith the
tether strap firm ly installed for several
days, this could leave a ma rk on the up­
ho lstery on the seat cushion and backrest
i n the area where the tether strap was in­
stalled. The upholstery would also be per ­
mane ntly stretched a round the tether
strap. T his app lies especia lly to leather
seats.
Using tether straps on rearward-facing
child restraints
Cu rrently, few rear-facing child restraint sys-
tems come with a tether . Please read and ...,

160 Child Saf ety
heed the child restraint system manufactur­
er's instructions caref ully to determine how to
properly insta ll the tether .
.&_ WARNING
-
A child in a rearward-facing child safety
seat installed on the front passenger seat
w ill be seriously injured and can be k illed if
the front a irbag inflates - even with an Ad­
vanced Airbag System .
- The inflating a irbag will hit the child
safety seat or infant car rier with g reat
force and w ill smash the ch ild safety seat
and child agains t the backrest, ce nte r
armres t, or door.
- A tight tet her or ot her st rap o n a rear ­
w ar d-fa cing child restr aint at ta ch ed to
the front passenger sea t can put too
much pressure on the weight -ma t in the
seat and register a heavier weight in the
Advanced Airbag System . The heav ier
we ight registered can make the system
work as though a n adu lt were on the seat
and dep loy the Advanced Airbag when it
must be suppressed ca using se rious or
even fatal injury to the child .
- If you must install a rearward facing
child safety seat on the front passenger
seat because of exceptional circ ums tan­
c es and the
PASSENGER AIR BAG OFF
ligh t does no t come on and stay on, im­
me diately install the rea r-facing child
safety seat in a rear seating position and
have the a irbag system inspected by yo ur
Audi dealer.
Additional Information
Sources of information about child
restraints and their use
There are a number of sources o f additional
i n fo rmation about chi ld restrai nt selection, in ­
stallat ion and use:
N HTSA advises that the best child sa fety seat
is the one that fits your child and fits in your
ve hicle, and that you wi ll use cor rectly and
consistently. T
ry before yo u buy!
U.S Nat ional Highway Traffi c Safety Admin ­
istration
T el.: 1-888-3 27- 423 6 (TIY: 1-80 0-4 24 -9153)
www.nhtsa.gov
National SAFE KIDS Campaign
T el.: ( 202) 662- 0600
www.safe kids.org
Safety B eltSafe U .S.A
T el.: (800) 74S-SAF E (English)
T el.: (80 0) 747 -SANO (Span is h)
www. carseat .org
Transport Canada Information Centre
T el.: 1 (800) 333 -03 71 or call
1 (6 13) 9 98-8616 if you are in the Ottawa
area
www.tc.gc .ca/ roadsa fe ty
Audi Cu stomer CARE
T el.: (80 0) 822-2834

Intelligent technology Notice about data
recorded by vehicle
control modules
Your vehicle is not equipped with an Event Da­
ta Recorder (EDR), installed by some manu­
facturers for the express purpose of capturing
data for retrieval after an accident or crash
event. EDR's are sometimes called "crash re­
corders".
Some state laws restrict the retr ieval or down­
loading of data stored by EDR's that were in­
stalled in a vehicle for the express purpose of
retrieving data after an accident or crash
event without the owner's consent.
Although your vehicle is not equipped with an
EDR, it is equipped with a number of electron­
ic control modules for various vehicle systems
such as, for examp le, engine function, emis­
sion control, as well as for the airbags and
safety belts.
These electronic control modules also record
vehicle-related data during norma l vehicle op­
eration for diagnostic and repair purposes.
The recording capacity of the electronic con­
trol modules is limited to data (no sound is re­
corded) and only a small amount of data is ac­
tually recorded over a very limited period of
time and stored when a system fault or other
condition is sensed by a control unit. Some of
the data then stored may relate to vehicle
speed, direction, braking as we ll as restraint
system use and performance in the event of a
crash or other condition. Stored data can only be read and downloaded with special equip­
ment.
Electronic Stabilization
Program (ESP)
Description
ESP helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidding and loss of veh icle control. It works
only when the engine is running. ESP detects
Intelligent technology 161
certain difficult driving situations, including
when the vehicle is beginning to spin (yaw)
out of control and helps you to get the veh icle
back under control by se lectively braking the
wheels, and/or reducing engine power and
providing steering ass istance to help hold the
vehicle on the driver's intended course. The in­
dicator light
G] in the instrument cluster
blinks when ESP is taking action to help you
control the vehicle.
ESP has limitations. It is important to remem­
ber that ESP cannot overcome the laws of
physics.
It will not always be able to help out
under all conditions you may come up against.
For example, ESP may not always be able to
help you master situations where there is a
sudden change in the coefficient of friction of
the road surface. When there is a section of dry road that is suddenly covered with water,
slush or snow, ESP cannot perform the same
way it would on the dry surface . If the vehicle
hydroplanes (rides on a cushion of water in­
stead of the road surface), ESP will not be
able to help you steer the vehicle because con­
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered .
During fast cornering, particularly on winding
roads, ESP cannot always deal as effectively
with difficult driving situations as at lower
speeds. When towing a trailer, ESP is not able
to help you regain control as it would if you
were not tow ing a trailer.
A lways adjust your speed and driving style to
road, traffic; and weather conditions. ESP can­
not override the vehicle's physical limits, in­
crease the available traction, or keep a vehicle
on the road if road departure is a result of
driver inattention. Instead, ESP improves the
poss ibility of keeping the vehicle under con­
trol and on the road dur ing extreme maneu­
vers by using the driver's steering inputs to
help keep the vehicle going in the intended di­
rection. If you are traveling at a speed that
causes you to run off the road before ESP can
provide any assistance, you may not experi­
ence the benefits of ESP .
•
•

162 Intelligent technology
ESP includes and/or works together with the
anti-lock brake system (ABS), brake assist sys­
tem and anti-slip regulation (ASR). ESP is
switched on all the time. In certain situations
when you need less tract ion, you ca n sw itch
off ESP by pressing the button [g] _ Be sure to
switch ESP on again when you no longer need l ess traction .
Anti-lock b raking system (ABS)
ABS prevents the wheels from locking up
when braking. The vehicle can still be steered
even during hard braking. Apply steady pres­
sure to the brake pedal. Do not pump the ped­
al. A puls ing in the b rake pedal ind icates that
the system is he lp ing you to b ra ke the vehicle.
Br ake a ssist system
The brake assist system can decrease braking
d istance. It increases braking power when the
d river presses the brake pedal quick ly in eme r­
gency situations. You must press and hold the
brake peda l until the si tuation is over .
Anti-slip regulation (ASR)
ASR reduces engine power when the drive
wheels begin to spin and adapts the fo rce to
the road co ndit io ns. This makes it easier to
start, ac celerate and drive up hills.
Electronic differential loc k (EDL )
The EDL brakes wheels that are spinn ing and
transfers the drive power to the other drive
wheel or whee ls if the vehicle is equipped with
a ll-wheel d rive*. This funct ion is available up
to abo ut 60 mph (100 km/h).
In extreme cases, EDL automat ically switches
off to help keep the brake on the braked whee l
from ove rheating . EDL w il l switch on aga in au­
tomatically when conditions have returned to
n o rmal.
& WARNING
- ESP, A BS, ASR an d EDL cannot ove rcome
the laws of physics . This is espec ially im ­
portant on slippery or wet roads. If the
systems begin act ing to stab ilize your ve­
hicle, you should immediately cha nge your speed to matc
h the road and t raffic
conditions. Do not let the increased safe­
ty provided by these systems tempt you
to take risks. Do ing so w ill increase the
ris k of a loss of veh icle control , co llision
and serious pe rsonal inj uries .
- Always adapt your speed to road, traffic and weather conditions. The risk of los­
ing control of the vehicle inc reases when
d riving too fast, espec ially through
curves and on slippe ry or wet roads, and
when dr iv ing too close to vehicles up
ahead. ESP, ABS, the brake assist system, EDL an d ASR cannot prevent collisions.
- Always accelera te with special care on
even, smooth s urfaces such as those that
are wet or covered with ice and snow.
The drive wheels can spin even w ith
these assistance systems that cannot al­
ways he lp to red uce the risk of loss of ve­
h icle control.
(D Tips
- ABS and ASR only work correct ly when
all four wheels are equipped with identi­
cal tires. Diffe rent tire sizes can lead to a
reduction in engine powe r.
- You may hear noises when the systems
descr ibed are working .
- If the indicator light
D] or m (USA
mode ls)/ KC] (Canada models) appears,
t here may be a malfunction~
page 18,
~page 18.
ESP switching on/off
Fig. 151 Ce nter conso le: ESP O FF butto n
The ESP is automat ically activated whe n the
engine is started, and it performs a se lf-test .
II>

As soon as the test is completed, the system
is in normal operating mode.
Switching off
E SP should normally be activated at all times
because this ensures optimum vehicle stabil i­
ty. In certa in situations, it might make sense
to a llow some slip . For example:
- Rocking the vehicle to free it when it is stuck
- Driving in deep snow or on loose ground
- Driving with snow cha ins
Press the
[!I button . The ESP indicator light I)
turns on and S tabil isat ion prog ram off ap­
pears in the d isp lay. ASR deact ivates com­
pletely and the stab ilizat ion effects from the
ESP system are lim ited.
S wi tc hing on
Press the [!I button again. The message S tab i·
li sa tion p rogram on
appears briefly in the dis­
play.
A WARNING
You should only sw itch the ESP off if your
driving ability and the traffic s ituation per­
m it. Please note that when ESP/ASR is de­
act ivated, the drive whee ls can sp in on icy
and slippe ry roads and the vehi cle can
break away - danger of skidding!
(j) Tips
If A udi magnetic ride* is malfunctioning,
the ESP may not switch off or it may
sw itch off automatically.
Braking
General information
What affects braking efficiency?
Operating condit ions and d riving habit s
The brakes on today's automobi les are st ill
subject to wear, depending largely on operat­
ing cond itions and dr iving habits
q .&. . On ve ­
hicles that are either driven mostly in stop­
and -go city traffic or are driven hard, the
brake pads should be checked by your author-
Int ellig ent technolog y 163
ized Audi dea ler more often than specified in
the
W arra nty & M aintenance booklet. Failure
to have your brake pads inspected can result
in reduced brake performance.
On steep slopes, you sho uld use the b raking
effect of the engine. This way, you prevent un­
necessary wear on the brake system. If you
must use your brakes, do not hold the brakes
down cont inuously. Pump the brakes at inter­
vals.
Noises may occur when braking depending on
speed, braking force and outs ide cond it ions
such as temperature and humidity.
Mo isture o r road sal t
If you are driving faster than SO mph (80 km/
h) and the windshield wipers are on, the brake
pads will briefly touch the brake discs in regu­
lar intervals so as to improve react ion time
when brak ing on wet surfaces. You, the driver,
will not not ice anything.
Under certain conditions, for example, when
driv ing through water or very heavy ra in, or
even after washing your veh icle, the braking
effect can be reduced due to moisture (or in
freez ing cond itions ice) on the brake pads. A
few cautious brake applications should dry off
the b ra ke pads or remove any ice coatings.
The effectiveness of the brakes ca n be reduced
when the vehicle is driven on a salt-cove red
road and the brakes are not used. l ikewise,
you clean off accumulated salt coating from brake d iscs and pads w ith a few cautio us ap­
plications o f the b ra ke
¢ .&, .
Corrosion
T here may be a tendency for di rt to b uild up
o n the brake pads and corros ion to fo rm on
the d iscs if the car is not d riven regu larly or
o nly for short tr ips w ith litt le use of the
brakes.
If the brakes a re not used frequently, o r if cor­
ros ion has formed on the discs, it is adv isable
to clean off t he pads and d iscs by braking
firmly a few times from a moderately high
speed ~.&. . .,.
•
•

164 Intelligent technolog y
Faults in the bra ke sys tem
If you should notice a sudden increase in
b rake peda l travel, then one of the two brake
circuits may have failed¢.& .
Low brake flu id le vel
Malfunct ions can occur in the brake system if
the brake fluid level is too low . T he brake fluid
l eve l is moni to red electronica lly .
Bra ke lining w ear st atu s
Brake l ining wear may be checked by visual in­
spection of the condition of the brake pads
through the openings in the whee l. If neces­
sa ry, the wheel may be removed for this in ­
spection
¢page 236, Wheel change.
A WARNING
-You should perform braking maneuvers
for the purpose of cleaning the brake
system on ly if road conditions permit.
Other road users must not be put at risk -
you may cause an acc ident!
- Before descending a steep grade, reduce
speed and shift transmiss ion into a lower
gear or lower driving range . Do not ride
the brakes or hold the pedal down too long or too often. This cou ld cause the
brakes to get hot and dimin ish braking
efficiency.
- Do not "r ide the brakes" by resting your
foot on the pedal when yo u do not intend
to bra ke . This may cause the brakes to
overheat, premature wear and increased
stopping distance .
- Under certain climat ic and operating
condit ions such as passing through wa­
ter, driving in heavy rain or after washing
the vehicle, the effectiveness of the brakes can be reduced. In winter, ice can
accumulate on the brake pads, linings,
discs and drums . Carefully apply brakes
for a test . Brakes will dry and ice coat­
ings will be cleaned off after a few care­
ful brake applications.
- Driv ing for an extended period of time on
salt-covered roads w ithout us ing your
brakes can also affect braking efficiency . Clean off accumulated salt coating from
brake discs and pads with a few careful
brake applications.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the a ir
flow to the front brakes is not obstruct­ ed. Otherwise the brake system could
overheat reducing the effectiveness of
the entire brake system.
- Failure of one brake circuit will impa ir
the braking capab ility result ing in an in­
creased stopping distance. Avoid driving
the vehicle and have it towed to the near­
est a utho rized Audi dea le r or q ualified
wo rkshop.
Brake booster '
The brake booster adds extra broking power.
The brake booster works with vacuum pres­
sure which is created only when the eng ine is
run ning ¢.&_ .
_&. WARNING
-Never let the vehicle roll to a stop with
the engine shut off.
- I f the b rake booster is not working, for
examp le when towing yo ur vehicle, or
because the brake booster has somehow
been damaged, the brake pedal must be
pressed conside rably harder to make up
for the lack of booster assistance.
Functioning of Anti-Lock Brake System
(ABS)
ABS prevents the wheels from locking up un­ der broking.
.
The ABS contributes effectively to vehicle con­
trol since it prevents the whee ls from
locking
when the brakes are applied. This means that
the vehicle remains steerable and is less likely
to sk id .
With ABS you do not need to pump th e
brake. Ju st hold the b ra ke pedal down.

However, do not expect that the ABS shortens
braking distance under
all circumstances.
When driving on grave l or on newly fallen
snow on top of icy surfaces, braking distance may be even longer, therefore, under these
circumstances, it is especially important that
you dr ive slowly and with great care .
How th e ABS syste m work s
An automatic check is made when a speed of
about 4 mph (6 km/h) is reached. When this
happens, a pumping noise can be heard .
If an individua l wheel begins to rotate too
slowly in relation to vehicle speed and tends
to lock, the ABS automatically reduces brake
pressure to prevent that wheel from locking.
This automatic adjustment process will cause
a
s light vib ration of the brake pedal and some
noises to alert you that vehicle speed must be
adapted to existing road and traff ic condi­
tions .
A WARNING
Although the ABS is very effective, always
remember that bra king capability is limit­
ed by t ire traction. Always adjust your dr iv­
ing speed according to the road and traffic
conditions . Do not let the extra sa fe ty af ­
forded bytheABStemptyou into taking
extra r isks. The ABS cannot overcome the
laws of physics.
(D Tips
- If ABS is not functioning properly, a
warning light will come on. See
¢ page 18.
- If a fault occurs in the ABS, the EDL is al ­
so not functioning . This is indicated by
the ABS warning light.
Brake assistant
The broke assistant is designed to achieve the
optimum broking effect .
The brake assistan t helps to increase the ef­
fective
b raking power and thus to achieve a
shorter stopping distance . If the driver
Int ellig ent technolog y 165
presses the brake peda l very quick ly, the brake
assistant automatically boosts the braking
force to the max imum level, up to the po int
where the anti-lock brake function (ABS) inter­
venes to stop the whee ls from locking. You
shou ld then keep the brake peda l pressed un ­
t il the vehicle has braked to the required
speed. The brake assistant switches itself off
as soon as you release the b ra ke peda l.
The brake ass istant wi ll not be operative if
there is a ma lfunction in the ABS.
A WARNING
P lease remember that the acc ident risk a l­
ways increases if you drive too fast, espe­
cially in corners or on a slippe ry road, o r if
you follow the vehicle ahead of yo u too
closely . An increased accident risk cannot
be compensated even by the brake assis ­
tant, so always mainta in a safe speed.
Electro-mechanical
power assist
The electro-mechanical power assist helps
the driver when steering .
The degree of power assist is electronically
matched to vehicle speed .
The power steering system assists the driver
so that he can steer the vehicle with reduced physical effort.
Power steering will not work if t he engine is
off . As a result, the steering wheel will be hard
to turn .
A WARNING
If the system deve lops a problem, you
must seek qualified professiona l assis­
tance.
(D Note
If there is an e lectronic malfunction, ser­
votronic
will still function like a conven-
tiona l power steering system, providing a
constant steering support force that is no
-
l onge r proportionate to the vehicle speed. ..,.
•
•

166 Intelligent technolog y
This is most noticeab le when turning the
steering whee l at low speeds (for examp le
when parking), -more effort will be re­
quired than usual.
- Be aware of the different than usual
steering response and adjust your steer­
i ng force accord ingly.
- Have the problem checked and set right
by an author ized Audi dealer as soon as
possible.
- If a steering malfunct ion occurs, this is
s ignaled with the
ts ~ or .• indicator
li ghts and a warning tone, see.
(D Tips
- If the power steering system shou ld fail,
or if the eng ine is not running (for exam­
ple, while being towed), you will st ill be
able to steer the veh icle. However, more
effort will be req uired to do so.
- If the power steering system is not func­
tioning properly, co ntact your authorized
A udi dealer immediate ly.
Driving with your
quattro ®
Appl ies to vehicles: with All Whee l Drive
With All Wheel Drive, all four wheels are driv ­
en.
General information
W ith All Whee l Dr ive, power is d istributed to
a ll fo ur wheels . This happens automa tic a lly
depending on your driv ing sty le and the road
conditions at the time . See also
¢ page 161.
Winter tires
When dr iv ing in the w inte r, your ve hicle w it h
A ll Whee l Drive has an advantage, even wi th
reg ular t ires. In win ter road condi tions it may
be adv isable to mo unt winter tires (o r all-sea ­
son tires) for improved driveability and b rak­
ing: these tires must be mounted on all four
wheels. See also ¢ page 22 7, Winter tires.
Snow chains
Where snow chains are manda to ry on ce rtain
roads, this norma lly also app lies to ve hicles
with all-wheel drive¢
page 228, Snow
chains.
Replacing wheels /tires
Vehicles with A ll Wheel D rive must a lways
have t ires o f the same s ize. A lso avoi d tires
with different t read depths . For deta ils see
page
¢ page 223, New tires and replacing
tires and wheels .
Off-Road driving?
Your Audi does no t have enough g round clea r­
ance to be used as an off-road vehicle .
It is
therefore bes t to avoid rough tracks a nd un ­
even terrain as much as possib le . Also refer to
¢ page 171.
A WARNING
-
Always ad just your dr iv ing to road and traf-
f ic conditions. Do not let the extra safety
afforded by the all-wheel dr ive tempt you
i nto ta king extra risks.
- Although the quattro ®all-wheel dr ive is
very effect ive, a lways remember that
b rak ing capac ity is limited by tire trac­
tion . You should therefore not d rive at
excessive speeds on icy or slippe ry road
sur faces.
- On wet road surfa ces, be careful not to
d rive too fast because the front whee ls
could begin to slide on top of the water
(hydroplaning). If this sho uld occ ur, you
will have no warning from a s udden in ­
crease in eng ine speed as w it h a front­
wheel d rive veh icle. Always drive at
speeds which are adjusted to the road
conditions - risk of c rash!

Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine .
If a vehicle with a conventional energy system
is not driven for a long period of time , the bat­
tery is discharged by idling current consumers
(e.g. immobilizer). In ce rtain c ircumstances it
can result in there being insuff icient ene rgy
avai lab le to start the engine .
Intell igent energy management in your vehi­
cle hand les the d istribution of electrical ener­
gy. Starting ab il ity is markedly improved and
the life of the battery is extended.
Basically, energy management consists of
batt ery di agno sis, idlin g current man ag e­
m ent
and dyn ami c en ergy m anage ment .
Batter y diagnosis
Battery diagnosis continuously determines
the state of the battery . Sensors determ ine
battery vo ltage, battery current and battery
temperature. This dete rm ines the current
state of charge and the powe r of the battery.
Idling curr ent man agement
Idling current management reduces ene rgy
consumption while the vehicle is stand ing .
W ith the ignition switched off, it cont ro ls the
energy supply to the va rious electr ical compo ­
nents . Data from battery diagnosis is consid­
ered.
Depending on the battery's state of charge,
i nd ividua l consumers are gradual ly t urned off
to prevent excess ive d ischarge of the bat tery
and thus maintain starting capability .
Dynamic en ergy management
While the vehicle is being driven, dynamic en­
e rgy management dist ributes the energy gen­
e rated according to the needs of the individu­
a l components.
It reg ulates cons umption, so
that more electrical energy is not being used
Int ellig ent technolog y 167
than is being generated and ensures an opti ­
mal state of charge for the battery.
(0 Tips
- But even energy management canno t
negate the limits of physics . Consider
that the power and life of a battery are
limited .
- If starting ability is threatened, you are
informed by a warning
r:!) page 168,
Driver notification in the instrument
cluster display.
What you should know
The highest priority is given to maintaining
starting capability.
The battery is severe ly taxed in short -distance
driving, in city traffic and during the cold time
of year. Abundant electrical energy is re­ quired, but only a little is generated .
It is also
critical if the engine is not running and electri­
cal components are turned on . In this in­
stance energy is be ing consumed but none is
being generated.
It is in precisely these situations that you will
notice energy management actively regulat ­
ing the d istribution of energy .
Vehicle stands for an e xtended peri od
If you do not drive your vehicle over a period
of several days or weeks, e lectr ical compo­
nents are gradually cut back or switched off.
This reduces energy consumption and ma in ­
ta ins start ing capability over a longer period .
Take into considerat ion that when you unlock
your vehicle, some convenience functions, such as the remote key or power seat adjust­
ment, may not be available . The conven ience
funct ions w ill be available again when you
tu rn on the ignition and start the engine .
With the engine turned off
If you listen to the radio, for example, w ith
the engine turned off, the battery is being d is-
charged.
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168 Intelligent technology
If starting capability is jeopa rdized due to en­
ergy consumption, a message appears in the
driver information disp lay.
You have to start the eng ine to charge the
battery.
With the engine running
A lthough electrical energy is generated when
the vehicle is be ing driven, the battery can be­
come discha rged. This happens mos tly when
little e nergy is be ing generated and a great
dea l consumed and the battery's state o f
charge is not optima l.
To br ing the energy balance back into equili ­
brium, cons umers which require especia lly
l arge amo unts of energy are temporari ly c ut
back or switched off. Heating systems in par­
ticular requ ire a great dea l of energy. If you
notice, for example, that the heated seats* or
the heated rear window are not heating, they have been temporar ily cut back or switched
off. These systems will be ava ilable again as
soon as the energy ba lance has bee n restored.
You will a lso notice that engine idle speed has
been increased s lightly . This is norma l and not
a cause fo r co ncern . By increas ing engine idle
speed the add itiona l ene rgy required is gene r­
ated and the ba tte ry is charged.
Driver notification in the instrument
cluster display
If batte ry power drops into the range w here it
can limit the ab ility of the engine to start, th is
is shown in the instrument cluster display
with the following driver message:
(•) Low batter y charge : batte ry will be
charged while dr iving
This notif ication reminds you tha t the s tarti ng
capability of the engine may be limited. As
soon as you start d riving again, the battery
will be recharged and the notification wi ll go
out.
Driver notification appears and goes out
again
If this driver notif ication appears after the ig­
nition is t urned on or whi le driving and it goes
out again after a while, the battery has been
adequately recharged.
Driver notification appea rs and doe s not
go out again
If this driver notif ication appears after the ig­
nition is turned on or whi le driving and does
not go out again, the battery 's state of charge
is not in the optima l range. Starting ab ility is
rest ricted . H ave t he battery chec ked as soon
as possib le by an autho rized Aud i dea le r o r
qualified wo rks hop.