light AUDI A5 COUPE 2012 Owners Manual

the child's body and the front of the passen­
ger compartment, the airbag can inflat e com ­
p letely and provide supplemental protection
in certa in frontal col lisions .
_&. WARNING
Not using a booster seat, us ing the boos­
ter seat improperly, incorrect ly installing a
booster seat or using the vehicle safety
belt improperly increases the risk of seri­
ous personal injury and death in a collision
or ot her eme rgency s ituation. To help re­
duce t he risk of ser ious persona l injury
and/or death:
- Always make sure to position the should­
er port ion of the three -po int bel t over
the middle of chi ld's sho ulder.
- Never let the shoulder port ion of the be lt
rest against or across the neck , face,
chin, or throat of the child .
- Always make sure the lap belt portion o f
the three-po int be lt is worn sn ug and
passes as low as possib le across the
child's pelvis. Never let the belt pass over
the soft abdomen.
- Failure to properly route sa fety belts
over a ch ild's body will cause severe inju­
ries in an acc ident or other emergency
situation
¢page 154.
-The rear s ide of the booster seat should
be pos it ioned as close as poss ible to the
backrest on the vehicle seat . Adjust or re ­
move the rear seat head rest raint if it is
difficult to install the child seat w it h the
head restraint in place¢
page 67. Insta ll
the head res train t again immedia tely
once the child seat is removed . Dr iving
without head rest raints or with head re­
straints that are not properly adj usted
increases the risk of ser ious o r fatal neck
injury dramat ically.
- Children on the front seat of any car,
even with Advanced A irbags, can be seri­
o usly injured or even killed when an a ir­
bag inf lates.
- Never let a child stand or knee l on any
seat.
Child Sa fet y 195
-Never let a chi ld r ide in the cargo area of
your veh icle.
- Always remembe r th at a c hild leaning
forward, sitting sideways or out of posi­
tion in any way d uring an accident can be
struck by a dep loying a irbag. This will re­
sult in ser ious personal inju ry or death .
- If you must install a booster seat on the
front passenger seat because of excep­
tional ci rcumstances the
PASSENGER
AIR BAG OFF
li ght m ust come o n and
s tay on, whenever the ignition is switch­
ed on .
- I f the
PASSENGER AIR BAG OFF light
does not come on and stay on, pe rform
the c heck s descr ibed
¢ page 173, Moni­
toring the Advanced Airbag System .
- Take the chi ld restraint off the fron t pas­
senger sea t and inst all it prope rly at one
of the rear sea t positions if the
PASSEN­
GER AIR BAG OFF
li ght does not stay on
whenever the ignit ion is switched on .
-A lways read an d heed a ll WAR NIN GS
wheneve r us ing a chi ld restrained in ave ­
hicle is being used
¢ page 154, Safety
belts,
¢ page 162, Airbag system and
¢ page 186, Important things to know.
Installing a child safety
seat
Securing a child safety seat using a
safety belt
Safety belts for the rear seats and the front
passenger's sea t con be locked w ith the con­
ver tible locking re tractor to properly secure
child safety seats .
The safety belts emergency locking ret ractors
for the rear seats safety bel ts and for the
front passenger's seat safety be lt have a co n­
vertib le locking retractor for child rest raints.
T he safety belt must be locked so that be lt
webb ing cannot unreel. The retractor can be
activated to lo ck the safe ty belt and prevent
t h e safety be lt webbing from looseni ng up
during norma l dr iving . A chi ld safety seat can
o nl y be properly installed when the safety belt...,
•
•

196 Child Safety
is locked so that the child and child safety
seat will stay in place.
Always remember: Even though your vehicle is
equipped with an Advanced Airbag system, all
children, especially those 12 years and young­
er, should always ride in the back seat proper­ ly restrained fo r their age and weight.
.&_ WARNING
Improperly installed child safety seats in­
crease the risk of serious personal injury
and death in a collision.
- Always make sure that the safety belt re­
tractor is locked when installing a child
safety seat . An unlocked safety belt re­
tractor cannot hold the child safety seat in place during normal driving or in a
crash .
- Always buckle the child safety seat firmly
in place even if a child is not sitting in it.
A loose child safety seat can fly around
during a sudden stop or in a collision.
- Always make sure that the rear seat
backrest to which the center rear safety
belt is attached is securely latched when­
ever the rear center safety belt is being
used to secure a child restraint.
- If the backrest is not securely latched, the child and the child restraint will be
thrown forward together with the back­
rest and will strike parts of the vehicle
interior. The child can be seriously in­
jured or killed.
- Never install rearward-facing child safety
seats or infant carriers on the front pas­
senger seat . A child will be seriously in­
jured and can be killed when the passen­
ger airbag inflates.
- 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 safe­
ty seats or infant carriers on the rear
seat. -
Forward-facing child safety seats or in­
fant carriers installed on the front pas­
senger 's seat may interfere with the de­
ployment 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
whenever using a child restrained in ave­
hicle is being used
~ page 186. Special
precautions apply when installing a child
safety seat on the front passenger seat
~ page 163, Child restraints on the front
seat -some important things to know.
.&_ WARNING
-
Always take special precautions if you
must install a forward or rearward-facing
child restraint on the front passenger's
seat in exceptional situations:
- Whenever a forward or rearward-facing
child restraint is installed on the front
passenger 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
~ page 173, Moni­
toring the Advanced Airbag System.
- Take the child restraint off the front pas­
senger seat and install it properly at one
of the rear seat positions if the
PASSEN­
GER 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 protec­
tion.
- An improperly installed child restraint
can interfere with the airbag as it de­
ploys and seriously injure or even kill the
child.
- Always carefully follow the manufactur­
er's instructions provided with the child
safety seat or carrier.

-Never place additional items on the seat
that can increase the total weight regis­
tered by the weight-sensing mat and can
cause injury in a crash .
_&. WARNING
Forward-facing child restraints:
- Always make sure the forward-facing
seat has been designed and certified by
its manufacturer for use on a front seat
with a passenger front and side airbag .
- Never put the forward-facing child re­
straint up, against or very near the in­
strument panel.
-Always move the passenger seat into its
rearmost position in the seat's fore and
aft adjustment range, as far away from
the airbag as possible before installing
the forward-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.
_&. 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 Advanced 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
install a rearward facing child safety seat
on the front passenger seat in exception­
al circumstances.
-A tight tether strap on a rearward-facing
child restraint attached to the front pas­
senger seat can put too much pressure
on the weight-mat in the seat and regis­
ter a heavier weight in the Advanced Air-
Child Safety 197
bag System. The heavier weight regis­
tered can make the system work as
though an adult were on the seat and de­ ploy the Advanced Airbag when it must
be suppressed causing serious or even
fatal injury to the child.
- Make sure that the
PASSENGER AIR BAG
OFF
light comes on and stays on all the
time whenever the ignition is switched
on .
- If the
PASSENGER AIR BAG OFF light
does not come on and stay on, immedi­
ately install the rearward-facing child
safety seat in a rear seating position and
have the airbag system inspected by your
authorized Audi dealer.
Activating the convertible locking
retractor
Use the convertible locking retractor to se­
cure a child restraint.
Always heed the child safety seat manufactur­ er 's instructions when installing a child re­
straint in your vehicle. To activate the conver­
tible locking retractor:
.. Place the child restraint on a seat, prefera­
bly on the rear seat.
.. Slowly pull the belt
all the way out.
.. Route it around or through the child re­
straint belt path
c:> ,&. .
.. Push the child safety seat down with your
full weight to get the safety belt really tight.
.. Insert the belt tongue into the buckle for
that seating position .
.. Guide the safety belt back into the retractor
until the belt lies flat and snug on the child
safety seat.
.. You should hear a "clicking" noise as the
belt winds back into the inertia reel. Test the
convertible locking retractor by pulling on
the belt. You should no longer be able to
pull the belt out of the retractor. The con ­
vertible locking retractor is now activated .
.. Make sure that the red release button is fac­
ing away from the child restraint so that it
can be unbuckled quickly. .,. •
•

202 Child Safe ty
- 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
tight, that it causes the weight-sensing
mat to measure more weight than is ac­
tually on the seat.
- The heav ier weight reg istered can make
the Advanced Airbag System wo rk as
though an adult were on the seat and de­
ploy the Advanced A irbag when it m ust
be s uppressed causing ser ious or even
fatal injury to the child.
- If you mus t install a rearward f acing
child safety seat on the front passenger
seat because of exceptional circumstan ­
ces and the
PAS SENGER AIR BAG OFF
light does not come on and stay on, im­
mediately install the rear-facing child
safety seat in a rear seating position and
have the a irbag system inspected by your
Audi dealer.
Installing the upper tether strap on the
anchorage
F ig. 194 Tether strap: prope r rou ting and mo unt ing
Inst all in g the tether strap
.,. Release or deploy the tether strap on the
child restraint according to the child re­
straint manufacturer's instructions . .,.
Guide the upper tether strap
under the rear
head restraint co
fig. 194 (raise the head re­
straint if necessary).
.,. Tilt the recess flap up to expose the anchor
bracket.
.,. Attach the tether strap anchorage hook into
the opening of the tether anchorage.
.,. Pull on the tether strap hook so that the
spring catch of the hook engages .
.,. Tighten t he te ther s trap firmly fo llowing
the child restraint manufacturer's instruc­
tions.
Relea sing the tether strap
.,. Loosen the tension fo llowing the child re­
straint manufacture r's instructions.
.,. Depress the spring catch on the hook and
release it from the ancho rage.
(D Note
If you leave the child restra int w ith the
tether strap firm ly installed for several
days, this could leave a mark on the up ­
ho lstery on the seat cushion and backrest
in the area where the tether strap was in­
stalled. The upholstery would also be per­
manently stretched around the tether
strap . This applies espec ia lly to leather
seats .
Using tether straps on rearward-facing
child restraints
Currently, few rearward-facing child restraint
systems come w ith a tether. Please read and
heed the chi ld restra int system manufactur­
er's instructions carefully to determine how to
properly install the tether .
A WARNING
-
-
A child in a rearward-facing ch ild safety
seat installed on the front passenger seat
will be serious ly injured and can be killed if
the front airbag inflates -even with an Ad­
van ced A irbag System .
- The inflating airbag will h it the ch ild
safety seat or infant carrie r with great
for ce and will smash the child safe ty seat
~

and child against the backrest, center
armr est, or door.
- A tight tether or other strap on a rear­
ward-fac ing ch ild restra int attached to
the front passenger seat can put too much pressure on the weight-mat in the
seat and register a heavier weight in the
Advanced Airbag System. T he heav ie r
we ight registe red ca n make th e system
wor k as thoug h an adu lt were on t he seat
and dep loy the A dvanced Airbag when i t
must be suppressed ca using serious or
even fatal injury to the child.
- If you mus t inst all a rearw ard facing
child safety seat on the front passenger
seat because of exceptional circ umstan­
ces and the
PASSENGER AIR BAG OFF
light does not come on and stay on, im­
med iate ly install the rearward-facing
child safety seat in a rear seat ing pos i­
t io n and have the airbag system inspect­
ed by you r a uthorized Audi dea le r.
Additional Information
Sources of information about child
restraints and their use
There are a number of sources of additional
information about ch ild restraint selection, in­
stallat ion and use:
NHTSA advises that t he best child safety seat
is the one that fits yo ur child and fits i n your
ve hicle, and that you w ill use correctly and
consis tently.
Try before you buy!
U.S National Highway T raffic Safety Admin­
istration
Te l.: 1-888-327-4236 (TTY : 1-800-424-9153)
www.nhtsa.gov
National SAFE KIDS Campaign
Te l.: (202) 662 -0600
www.safekids.org
Child Sa fet y 203
Safety BeltSafe U.S.A
Tel.: (800) 7 45 -SAFE (English)
Tel.: (800) 747-SANO (Span ish)
www.carseat.org
Transport Canada Information Centre
Tel.: 1 (800) 333-0371 or call 1 (6 13) 998 -8616 if you are in the Ottawa
area
www.tc.gc.ca/ roadsafety
Audi Customer CARE
Tel.: (800) 822 -2834
•
•

vertical axis, vehicle acceleration in the fore ­
and-aft and lateral directions , the brake pres­
sure, and the steering ang le are all measured .
The direction in which the d river wishes to
travel is determined with the aid of the steer­
ing angle and vehicle speed and is continually
compared with the actual behavior of the ve­
h icle. If the two do not match, for examp le,
when the vehicle starts hydroplaning on a wet
road, ESP will automatically brake the appro­
priate wheel to correct the problem.
The vehicle is then stabili zed by the forces act ­
ing on the wheel dur ing braking. If the vehicle
is
oversteering (the veh icle turns too sharply
and the rear wheels sl ide toward the outs ide
of a curve), the brakes are main ly applied on
the wheel that is on the outside of the curve.
I n the case of a ve hicle that is
understeering
(the vehicle does not turn sha rply enough and
pushes out of a curve) , the brakes are applied
as needed on the whee l that is on the inside of
the curve o r additiona lly on the other wheels.
An acoust ic signal indicates when ESP brake
application cuts in
q .& .
The system operates across the entire speed
range in combination with the ABS system
q page 208. If the Anti-Lock Brake System
(ABS) malfunctions, the ESP will be out of ac­
tion as well.
Acti vating
When you turn on the engine, ESP wi ll auto­
matica lly be activated and will perfo rm a se lf­
test. As soon as the test is completed, the sys­
tem is in normal operating mode .
You can activate a deactivated ESP or deacti ­
vated ESP/ASR if required by pressing the
qfig. 196 q fig . 195 button. When they are
activated, the message
Stabilisation prog ram
on
appears briefly in the d isplay.
D eacti vating
The ESP sho uld normally be activated all the
time. If necessary, you can deactivate Anti ­
Slip Regulation (ASR) or the Electron ic Stabili­
zation Program (ESP) by pressing the button
<:::;, fig. 196 .
Intellig ent technolog y 205
-Dea cti vating ASR: Tap the b utton. In cer ­
tain exceptional situations (e.g . driving with
tire chains), the Anti -Slip Regu lation (ASR)
can be deactivated
q page 206. The mes­
sage
ASR off Caution ! Limited d riv ing sta­
bilit y
appears in the display as we ll.
- Deacti vating ESP /A SR Press the button for
more than 3 seconds. Wi th the ESP/ASR de­
activated, the ind icator light comes on, see
c:::;, page 15 . The message War ning! R estrict­
ed stability
appea rs in the d isp lay as well.
.8, WARNING -
The Electronic Stabi liz a tion Program is
neverthe less subjec t to the laws o f phys­
ics. It is part icu la rly important to pay a t­
tention to this fact on wet and slippery roads. It is therefo re important that you
a lways adapt your driving to the condit ion
of the road and traff ic conditions. Do not
allow the increased safety provided by the Elect ronic Stabilization Program system to
lull you into accepting addit iona l safety
r isks.
Electronic differential lock (EDL)
The electronic differential lock monitors the
rotational speed of the drive wheels .
General not es
The electronic d ifferential lock ( E0L) he lps the
car to star t moving, acce lerate and climb a
gradient on surfaces providing poor or almos t
no grip . Without EDL, this would be d iff icult,
if not impossible .
How the sy stem works
The EDL operates automatically. It mon itors
the rotational speed of wheels with the he lp
of the ABS sensors
q page 208 . If a noticea­
ble
slip is detected at the wheels (e .g . on s lip ­
pery ground
on one side), the sp inning wheels
are braked and power is t ransferred to the
othe r whee ls. Thi s is done up to a speed of
abo ut 60 mph (100 km/h) . Noises from the
brake system signa l that wheel spin is be ing
controlled .
Ill>
•
•

206 Intelligent technology
Driving off
When driving off, a lways be sure to keep road
conditions in mind as you accelerate. If one
drive wheel spins because it is on a surface
with less grip, apply
plenty of throttle until
the car starts to
move .
Overheating of brakes
To prevent the disc b rake o f the bra ked wheel
from overheating if subjected to excessive l oads on this whee l, the EDL cuts out tempo­
rarily. The vehicle remains operational and be­
haves in the same way as a vehicle without
EDL.
As soon as the brake has coo led down, EDL
switches on again automatically .
A WARNING
-When accelerating on slippery surfaces,
such as on ice or snow, always be careful
when depressing the accelerator pedal. Even with the EDL working, the drive
wheels can spin and reduce your ability
to control your car. Risk of crash!
- The increased safety afforded by EDL
does not mean that you can take safety
risks. Always adapt your dr iving style to
the road conditions and traffic situation.
0) Tips
If a fault occurs in the ABS, the EDL is also
not funct ion ing. Thi s is indicated by the
ABS war ning light ¢
page 16.
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the
driven wheels from spinning when the car is
accelerating.
General notes
The Anti -Slip Regulation System (ASR) is inte­
grated in the electronic stabilization program
( E SP). When the vehicle starts up and acceler­
ates, the wheels are p revented from spinning
by adjusting the engine power to match the amount of grip available
from the road sur­
face.
How the system works
ASR performs automat ically, i .e. w ithout the
driver's intervention. With the aid of the ABS
sensors ¢
page 208, ASR monitors the speed
of the driven whee ls. If the whee ls start to
spin, engine torque is reduced automatica lly
until the tires find enough grip to lock onto
the road surface. The system is active across
the entire speed range.
The ASR works in conjunction with the ABS . If
a malfunction should occur in the ABS, the
ASR will also be out of act ion.
Activating
T he ESP is automatica lly activated when the
engine is started and it performs a se lf-test .
You can activate a deactivated ASR if required by pressing the
¢ page 204, fig. 196 button.
When it is act ivated, the message
ESP/ASR
on
appears briefly in the display .
Deactivating
You can deactivate the ASR if required by
pressing the button (for less than 3 seconds)
¢
page 204, fig . 196. With the ASR deactivat­
ed, the ESP check light comes on, see
¢
page 15 . The message ASR off appears in
the d isplay as well. The ASR can be deact ivat­
ed at any speed.
The ASR s hould normally be activated all the
time . Only in certain exceptional situations
when some slip is desirable does it make
sense to deact ivate the ASR . Examples :
- when driving with tire cha ins
- when driving in deep snow or on loose
ground and
- when rocking the vehicle loose after it has
become stuck.
When the abnormal situation is
over, you
shou ld activate the ASR again .

This automatic adjustment process will cause
a
slight vib ra tion of the brake pedal and some
noises to alert you that vehicle speed must be
adapted to existing road and traffic condi­
tions.
A WARNING
Although the ABS is very effective, always
remember that braking capability is limit­
ed by t ire traction . A lways adjust your dr iv­
ing speed according to the road and t raff ic
conditions. Do not let the extra sa fety af­
forded by the ABS tempt you into taking
extra risks. The ABS cannot overcome the
laws of physics .
(D Tips
-If ABS is not functioning properly, a
warning light will come on . See
~ page 16.
-If a fault occu rs in the ABS, the EDL is al­
so not functioning . This is indicated by
the ABS warning light .
Brake assist
Brake assist is designed to achieve the opti­
mum broking effect.
Brake assist helps to increase the effective
brak ing power and thus to achieve a shorter
stopping distance. If the driver presses the
brake peda l very quick ly, brake assist auto­
mat ica lly boosts the braking force to the max­
imum level, up to the point where the anti­
lock brake function (ABS) intervenes to stop
the wheels from locking . You should then
keep the brake pedal pressed u ntil the vehicle
has braked to the required speed . Brake ass ist
sw itches itself off as soon as you release the
b rake peda l.
A WARNING
Please remembe r that the accident r is k al­
ways increases if yo u drive too fast, espe ­
cially in corners or on a s lippery road, or if
you fo llow the vehicle ahead of you too
close ly. Increased risk of an accident can-
Int ellig ent technolog y 209
not be compensated for even by brake as­
sist, so always maintain a safe speed.
S .
®
ervotron1c
-
advanced power
steering system
The power steering systems uses the power of
the running engine to allow precise steering
with little effort.
T he advanced Servotronic ® power steer ing
system senses the road speed and elect ron i­
ca lly adjusts power assistance to provide com­
fortab le and safe ste ering response exact ly
matched to the vehicle speed .
Power steering will not work i f the engine is
off. As a result, the stee ring wheel will be hard
to turn .
T he power steering fluid level is checked d ur­
ing the schedu led maintenance services .
(D Note
If there is an e lectronic malfunction, ser ­
votronic
will s till function like a conven­
tiona l power steering system, providing a
constant steering support force that is no
l onger proportionate to the vehicle speed.
This is most noticeable when turning the
steering wheel at low speeds (for example
when parking), -more effort w ill be re­
q uired than usual.
- Be aware of the different than usual
steering response and adjust your steer ­
ing force acco rdingly .
- Have the problem checked and set right
by an Audi dealer as soon as possible.
(D Tips
-Whe n the engine is running, never hold
the steering w heel turned all the way to
the rig ht or to the left for longer t han 15
seconds. The powe r steering pump will
overheat the hydraulic fluid if you keep
holding the stee ring wheel turned all the
way. This is likely to damage the power
steering system .
IJI>
•
•

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 ag nosis, idlin g current man ag e­
m ent
and dyn ami c en ergy manage 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 determ 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 .
Dynam ic 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 211
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 212,
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 .
Some of the convenience functions may not
operate, such as the interior lights or the power seat adjustment . The convenience
funct ions w ill be available again when you
tu rn o n the ign ition and start the engine.
With the eng ine tu rned off
If you listen to the radio, for examp le, w ith
the engine turned off or use other MMI func -
tions, the battery is be ing discharged.
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212 Intelligent technology
If starting capability is jeopardized due to en­
ergy consumption, the following warning ap­
pears in the MMI display:
Please start engine, otherwise system will
switch off in 3 minutes.
The warning ind icates that the system will be
turned off automatically after 3 minutes. If
you wish to continue using the functions, you
have to start the engine .
With the engine running
Although electrical energy is generated when
the vehicle is be ing driven, the battery can be­
come discharged . Thi s happens mostly when
little ene rgy is being generated and a great
deal consumed and the battery's state o f
charge is not optima l.
To bring the energy balance back into equili­
brium, consumers which require especially
l arge amounts of energy are temporarily cut
back or switched off. Heating systems in par­
ticular require 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 balance has been restored.
You will also notice that engine idle speed has
been increased slightly. This is normal and not
a cause for concern . By increas ing engine idle
speed the add itiona l energy required is gener­
ated and the battery is charged.
Driver notification in the instrument
cluster display
If battery power drops into the range where it
can limit the ability of the engine to start, this is shown in the instrument cluster display
with the following driver message:
(•i Low battery charge : battery will be
charged while driving
This notif ication reminds you that the starting
capability of the engine may be limited. As
soon as you start driving again, the battery will
be recharged and the notification will go
out.
Driver notification appears and goes out
again
If this driver notification appears after the ig ­
nition is turned on or whi le driving and it goes
out again after a while, the battery has been
adequately recharged.
Driver notification appears and does not
go out again
If this driver notification 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 optimal range. Starting ability is
restricted . Have the battery checked as soon
as possible by an authorized Aud i dea ler or
qualified wo rkshop.