2013 AUDI S4 SEDAN warning

182 Child Safet y
-Never attac h a tether strap to a tie-down
hook in the luggage compartment .
- Never use c hild restraint tether ancho­
rages to secure safety belts or other
kinds of occupant restra ints .
- Never secure or attach any l uggage or
other items to the LATCH lower ancho­
rages or to the tether anchors.
- If a tether or other strap is used to at­
tac h a child restraint to the front passen­
ger seat, make sure that it is not so
t ight, that it causes the weight -sensing
mat to measu re more weight than is ac­
tua lly on the seat.
- The heav ier weight reg istered can make
the Advanced Airbag System wo rk as
though an adult we re on the seat and de­
ploy the Advanced A irbag when it m ust
be s uppressed causing ser ious or even
fatal inj ury to the child.
- If you mus t install a rearward f acing
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
mediately install the rear-facing child
safety seat in a rear seating position a nd
have the a irbag system inspected by you r
Audi dealer.
Installing the upper tether strap on the
anchorage
F ig . 1 58 Tethe r strap: prope r rou ting and mounting
Installing the tether strap
.,. Release or deploy the tether strap on the
child restra int acco rding to the child re­
straint manufacturer's instruct ions . .,.
Guide the upper tether strap
under the rear
head restraint co
fig. 158 (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 t he tether anchorage.
.,. Pull on the tethe r strap hook so that the
spri ng catch of the hook engages .
.,. Tight en t he te ther s tra p firmly fo llow ing
the child restraint manufac turer's instruc­
tions .
Releasing the tether strap
.,. Loosen the tens ion fo llowing the child re­
s traint manufa cture r's instr uctions.
.,. Depress the spring c atc h o n the hook and
release it from the ancho rage.
(D Note
If yo u leave the child restr aint w ith the
tethe r strap firm ly ins talled 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
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 res traint
systems come w ith a tether. Please read and
heed the c hild restra int system man ufactur­
er 's instr uctions carefully to determine how to
properly install the tether .
A WARNING
-
-
A child in a rearward-fac ing ch ild safety
seat installed on the front passeng er seat
will be s erious ly inju re d and ca n be killed if
the fr ont air bag infla tes -even with an Ad­
va nced A irbag Sys tem .
- Th e inflating airbag will h it th e chi ld
safety sea t or infant c arrie r wi th gre at
for ce and will sma sh the child s afety seat
~

ESC includes and/or works together with the
anti-lock brake system (ABS), brake assist sys ­
tem, anti -slip regulation (ASR) , e lectronic dif­
ferential lock (EDL), dynamic steering* and electronic i nteraxle differential lock* /selective
wheel torque control* . ESC is switched on all
the t ime. I n certain s ituations when you need
less traction, you can switch
off ASR by press­
i ng the button~~
page 186, fig. 159 or
~ page 186, fig. 160. Be sure to sw itch ASR
on again when you no longer need less trac­
tion.
Anti-lock b ra king s ystem (ABS)
ABS prevents the wheels from locking up
when braking. The vehicle can still be steered
even d uring hard brak ing . Apply ste ady p res­
sure to the brake pedal. Do not pump the ped­
a l. A pulsing in the brake peda l indicates t hat
the system is he lping you to brake the vehicle .
Brake assist system
The brake assist system can decrease bra king
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 situation is over. In
veh icles w ith adaptive cru ise contro l*, the
brake assist system is more sensit ive if the
d istance detected to the veh icle ahead is too
small.
Anti- slip regulati on (ASR)
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to
the road condit ions. This makes it eas ier to
start, accelerate and drive up hills.
Elect ronic diffe renti al lo ck (EDL )
The ED L brakes wheels that are spinning and
transfers the drive power to the other drive
wheel or wheels if the vehicle is equipped with
all-wheel drive*. This function is available up
to about 60 mph (100 km/h) .
In extreme cases, EDL automatica lly switches
off to help keep the brake on the braked whee l
from overheating. EDL w ill switch on again au-
Intellig ent technolog y 185
tomat ica lly when conditions have returned to
norma l.
Dynamic steering*
On vehicles with dynam ic steering*, ESC helps
stab il ize the s teer ing in crit ica l sit uat io ns.
Electronic interaxle differential lock* /
selective wheel torque control*
T he electronic i nteraxle differential lock (front
whee l dr ive) or the se lective whee l to rque
control (all-whee l dr ive) opera tes when dr iv­
ing thro ugh curves. The front wheel on the in­
side of the c urve or both whee ls on the inside
of the curve are braked selectively as needed .
This min imizes sliding in the front wheels and
allows for more precise driving through
cu rves . The applicable system may not acti­
vate when dr iv ing in wet or snowy conditions.
A WARNING
- ESC, ABS , ASR, EDL dynam ic steering*
a nd the elect ronic interaxle differential
loc k* /se lective wheel torque control*
function cannot overcome the laws of
physics. This is especially important on
slippery or wet roads . If the systems be­
gin acting to stabilize your vehicle, you
should immediately change yo ur speed
to match the road and traff ic conditions.
Do not let the increased safety provided
by these systems tempt you to take risks .
Doing so will increase the risk of a loss of
veh icle contro l, col lision and ser ious per­
sonal injuries.
- Always adapt your speed to road, traffi c
and wea ther conditions. The risk of los­
ing con tro l of the vehicle increases when
driving too fast, espec ially through
curves and on slippery or wet roads, and
when dr iv ing too close to vehicles up
ahead. ESC, ABS, the brake ass ist sys­
tem, ASR, EDL dynam ic steering* and the
electronic interaxle differentia l lock*/se­
lective whee l torque control* function
cannot prevent collisions.
•
•

186 Intelligent technology
-Always accelerate with special care on
even, smooth surfaces such as those that
are wet or covered with ice and snow.
The drive wheels can spin even with
these assistance systems that cannot al­
ways help to reduce the risk of loss of ve­ hicle control.
(i_) Tips
- ABS and ASR only work correctly when
all four wheels are equipped with identi­
cal tires . Different tire sizes can lead to a
reduction in engine power.
- You may hear noises when the systems
described are working .
- If the indicator light
I] or l;S (USA
models);tl] (Canada models) appears,
there may be a malfunction ¢
page 19,
¢page 19.
Switching on /off
ESC turns on automatically when you start
the engine .
Fig. 159 Vers ion A: low er ce nter c onsol e, 1', OFF but­
to n
.... .. [ I _j nw· 1-_, .. _ , 1 -- - .-=---1
I;· . i-a~ -~ ~-,' I ' .;- c;.il..-~ -~ 1,1
~' . -' ' 1 ' ...... ~ ... ~- ;. '"~ l __,
Fig. 160 Versio n B: upper ce nter console,!'> OFF but­
to n
Turning off ASR
In some situations, it may be useful to switch
ASR
off to allow the wheels to spin. For exam­
ple:
- Rocking the vehicle to free it when it is stuck
- Driving in deep snow or on loose ground
- Driving with snow chains
Qu ickly press the
i.i, OFF I button ¢ fig. 159
and¢ fig. 160. The fi indicator light turns on
and the message
Traction control (ASR): Off.
Warning! Restricted stability
appears in the
display .
It is only possible to turn off the ASR up to
30 mph (SO km/h) for vehicles with front
wheel drive . At about 45 mph (70 km/h) it au ­
tomatically turns on again .
It is possible to
turn
off the ASR at any speed for vehicles with
all wheel drive.
Turning off ESC
Press and hold the I B OFFI button for three
seconds . The
Ii ESC indicator light turns on
and the message
Stabilization control (ESC):
off. Warning! Restricted stability
appears in
the display. ASR is also switched
off when ESC
is switched off.
Switching on
Press the 1 .$ OFFI button again. The 11 indica­
tor light turns on and the message
Stabiliza­
tion control (ESC): On
appears in the display .
_&. WARNING
- Drive wheels can spin and you can lose
control of the vehicle more easily when
ASR and ESC are switched off, especially
when the road is slippery .
- Switch ASR/ESC
off only when your driv­
ing skills, traffic and weather conditions
permit.
(D Tips
You cannot switch ASR and ESC
off when
adaptive cruise control* is working.
-

Braking
What affects braking efficiency?
New brake pads
During the first 250 miles (400 km), new
brake pads do not possess their full braking
effect, they have to be "broken in" first¢& .
You can compensate for this slightly reduced braking power by pushing harder on the brake
pedal. Avoid heavy braking loads during the
break-in per iod.
Operating conditions and driv ing habits
The brakes on today's automobi les are sti ll
subject to wear, depending largely on operat ­
ing conditions and driving habits¢.&. . On
vehicles that are e ither driven mostly in stop­
and-go city traffic or are driven hard, the
brake pads should be checked by your author­
ized Audi dealer more often than specified in
the
Warranty & Maintenance booklet . Failure
to have your b rake pads inspected can result
in red uced brake performance.
On steep slopes, you shou ld use the brak ing
effect of the engine. This way, you p revent un­
necessary wear on the brake system.
If you
must use yo ur brakes, do not hold the brakes
down continuously. Pump the brakes at inter­
va ls.
Operating noise
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity.
Effect of water and road salt
In certain situat ions, for example after driving
through water, in heavy ra in, after overnight
condensation or after washing your car, the
braking effect can be reduced by moisture or
ice on the brake roto rs and brake pads . The
brakes must be dried first with a few careful
brake applications .
A t hi gher speeds and with the windshield w ip­
ers turned on, the brake pads press against
the brake rotors for a short amount of time .
This occurs at regular intervals without the
Intelligent technology 187
driver noticing and provides for better brake
response time under wet conditions .
T he effectiveness of the brakes can be red uced
when the vehicle is driven on a sa lt-co vered
road and the b rakes are not used. Likewise,
you clean off accumulated salt coating from
brake discs and pads with a few cautious ap­
plications of the brake ¢ & .
Corrosion
There may be a tendency for dirt to build up
on the brake pads and corrosion to form on
the discs if the car is not driven regu larly or
on ly for short trips with litt le use of the
brakes.
If the brakes are not used frequently, or if cor ­
rosion has formed on the discs, it is advisable
to clean off the pads and discs by braking
firmly a few times from a moderately high
speed ¢.&. .
Faults in the brake system
If you should notice a sudden increase in
brake pedal trave l, then one of the two brake
c ircuits may have failed ¢.&. .
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low. The brake fluid
level is monitored electronica lly.
Brake booster
T he brake booster increases the pressure that
you generate with the brake peda l. It works
only when the engine is runn ing .¢ .&.
Brake lining wear status
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
through the openings in the wheel. If neces­
sary, the wheel may be removed fo r this in­
spection ¢
page 252, Changing a wheel .
A WARNING
-
- New brake pads don't have the best stop­
ping power and must be "broken-in" dur-
ing the initial 100 to 150 miles (150 to
~
•
•

steering wheel wi ll be easy to move . Re­
initialization might be necessary if the steer ­
ing wheel was moved hard to the left and
right while the vehicle was not moving. The
d isplay goes out as soon as in itializat ion is
comp lete .
A WARNING
Have the dynamic steering* system mal­
function repaired as soon as poss ible by an
authori zed A udi dealer or any qualified
workshop -risk of accident!
@ Tips
- If the . or 1;r,ij indicator light only stays
on for a short t ime, you may continue
driving.
- The dynamic steering * stability systems
are not available in t he event of a system
malfunction.
- Fo r additional informat ion on dynamic
stee ring*, re fer to
c::> page 111.
Driving with your
quattro ®
Applies to vehicles: with all-wheel drive
With oil-wheel drive, oil four wheels ore driv­
en.
General information
W ith all -whee l dr ive, power is dis tributed to
a ll fo ur wheels. This happens automatica lly
depending on yo ur driving sty le and the road
conditions at the time. See also
c::> page 184 .
A center different ial d is tributes the dr iv ing
power var iably to the front and rear axle. It
wo rks together with se lective whee l to rque
contro l, which activates when driving throug h
curves
c::> page 185. With the sport d ifferen­
tial*, power distribution to the rear w heels is
variable and can be adjusted with Audi drive se lect
c::> page 111 .
The all-wheel drive concept is designed for
hi gh engine power. Your vehicle is exception­
ally powerful and has exce llent dr iving charac ­
ter ist ics both under normal d riving conditions
Int ellig ent technolog y 189
and on snow and ice . Always read and follow
safety precautions
c::> & .
Winter tires
When dr iving in t he winter, yo ur vehicle wi th
a ll -wheel drive h as an adv ant age, even w it h
regular tires. In wi nter road conditions it may
be advisable to mount winter tires (or all -sea ­
son tires) for improved driveability and brak­
ing : these tires must be mounted on
all fou r
wheels .
See also c::> page 245, Winter tires.
Tire chains
Where tire chains a re mandatory on certain
roads, this no rma lly also app lies to veh icles
with all-wheel drive
c::> page 246 , Snow
chains .
Replacing wheels /tires
Vehicles wi th a ll-wheel drive must alw ays
have tires of the same s ize. A lso avoid tires
with different tread depths . For detai ls see
page
c::> page 241, New tires and replacing
tires and wheels.
Off-Road driving?
Your A udi does no t have enough g ro und cle ar­
ance to be used as an off -road vehi cle. It is
therefore best to avoi d rough tracks and un­
even te rrain as much as possib le . Also refer to
c::> page 192.
A WARNING
A lways ad just yo ur dr iv ing to road and traf­
fic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking extra risks .
-Al tho ugh t he all-wheel driv e is ve ry ef­
fective, always remember that braking
capacity is lim ited by tire t raction. You
should t herefore not d rive a t excessive
speeds on i cy or slippery ro ad s urfa ces.
- On wet road surfa ces, be careful not to
d rive too fast bec ause the fron t whee ls
co uld begin to slide on top of the water
(aquaplani ng) . If th is should occur, yo u •
•

190 Intelligent technology
will have no warning from a sudden in­
crease in engine speed as with a front­
wheel drive vehicle. Always drive at speeds wh ich are suited to the road con­
ditions -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.
I f a vehicle with a conven tional energy system
i s not d riven for a long period of time , the bat­
tery is discharged by idling c urrent consumers
(e .g. immobilizer) . In certain circumstances it
can result in there being insuffic ient energy
avai lab le to start the engine.
I ntelligent energy management in your veh i­
cle hand les the distribution of electrical ener­
gy . Starting abi lity is marked ly improved and
the life of the battery is extended .
B asically , energy management consists o f
battery diagno sis, idling current manage­
ment
and dynami c ene rg y man agement.
Battery diagnosis
Battery d iagnosis con tinuously dete rm ines
the state of the battery. Senso rs determ ine
battery vo ltage, batte ry cur rent and battery
temperature. This determines the current
state of charge and the power of the battery.
Idling current management
I dling c urrent managemen t red uces energy
consumption while the vehicle is stand ing.
With the ignition switched off, it contro ls the
energy s upply to the various e lectrica l compo­
nents . Data from battery diagnosis is consid­
ered.
D epending on the battery's state of charge,
individual consumers are grad ually turned off
to prevent excess ive d ischarge of the battery
and thus ma inta in start ing cap ability .
Dynamic energy management
While the vehi cle is being driven, dynamic en­
ergy management distr ibutes the energy gen ­
erated according to the needs of the indiv id u­
al components.
It regulates consumption, so
that more electrical energy is not being used
t h an is being generated and ensures an opti­
mal state of c harge for the battery.
(!) Tips
- But even ene rgy management cannot
negate the limits of physics. Consider
that the power and life of a battery are limited.
- If start ing ability is threatened, the indi­
cator light(•] appears¢
page 17 .
What you should know
The highe st priori ty is given to main taining
starting capability.
T he battery is seve re ly taxed in short -d istance
driv ing, in city traff ic and during the cold time
o f year. Abundant electrical energy is re­
quired, but on ly a little is generated . It is also
critical if the engi ne is not r unning and electri­
ca l components are tu rned on. In this in­
sta nce ene rgy is be ing consumed bu t none is
being genera ted .
It is in precisely these s ituations t hat you will
notice ene rgy management active ly regu lat­
i ng t he d istribu tion of ene rgy.
Vehicle stands for an extended period
If you do not drive your vehicle over a period
of several days or weeks, e lectr ica l compo ­
nents a re g radually cut back or sw itched off .
T h is reduces energy consumption and ma in­
ta ins s tart ing capability over a longer pe riod .
Some of the convenience func tions may not
opera te, such as the interior ligh ts or the
power seat adjustment. The convenience
functions will be available again wh en you
switch on the ignition and start the eng ine .

With the engine turned off
If you listen to the radio, for example, with
the engine turned off or use other MMI func­
tions, the battery is being discharged .
If starting capability is jeopardized due to en­
ergy consumption, the following warning ap­
pears in the MMI display :
Please start the engine soon or the system
will be turned off.
The warning indicates 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 being driven , the battery can be ­
come discharged . This happens mostly when
little energy is being generated and a great
deal consumed and the battery's state of
charge is not optimal.
To bring the energy balance back into equili­ brium, consumers which require especially
large amounts of energy are temporarily cut
back or switched off . Heating systems in par­
ticular require a great deal of energy. If you
notice , for example , that the heated seats* or
the heated rear window are not heating, they
have been temporarily cut back or switched
off. These systems will be available 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 increasing engine idle
speed the additional energy required is gener­
ated and the battery is charged.
Intelligent technology 191
•
•

192 Driving and environment
Driving and
environment
The first 1,000 miles
(1,500 km) and
afterwards
New engine
The engine needs to be run-in during the first
1,000 miles (1,500 km).
For the fir st 600 miles (1,000
kilometers ):
.,. Do not use full throttle.
... Do not drive at engine speeds that are more
than 2/3 of the max imum permitted RPM.
From 600 to 1,000 miles (1 ,000 to
1,500 kilometers):
.,. Speeds can gradually be increased to the
max imum pe rm iss ible road or eng ine speed .
During and after break-in per iod
... Do not rev the eng ine up to h igh speeds
when it is cold. Th is app lies whether the
transmission is in N (Neutral) or in gear.
After the break- in period
... Do not exceed max imum eng ine speed un­
der any circumstances .
... Upshift into the next higher gear
before
reaching the red area at the end of the tach­
ometer scale¢
page 10.
During the first few hours of driving, the en­
g ine's inter na l friction is higher tha n later
when alt the moving parts have been broken
i n. How welt this break- in process is done de­
pends to a conside rable extent on the way the
ve hicl e is driven du ring the first 1,000 miles
(1, 500 kilome ters).
(D Note
E xtremely high engi ne speeds are auto­
mat ica lly re duced. However, these rpm
lim its are programmed for a n engine welt
r u n- in, not a new eng ine.
{® For the sake of the environment
Do not drive with unnecessarily high en­
g ine speeds - upshifting ear ly saves fuel,
reduces no ise and protects the environ­
ment.
, New tires
If your vehicle is runni ng on new tires, drive
very carefully for the first 350 miles (500 kilo­ meters) after fitting.
_& WARNING
N ew tires tend to be slip pery a nd mus t al­
so be "broken -in" . Be s ure to remembe r
this dur ing the fi rst 350 mi les (500 kilo ­
meters) . Brake gently . Avoid fo llow ing
closely behind other vehicles or other sit­
uations that m ight require sudden, hard
braking.
Avoid damaging the
vehicle
When you a re d rivi ng on poo r roads, or over
cu rbs, ste ep ramps, etc., ma ke certai n that
low- ly ing parts s uch as spoile rs and ex ha ust
s ystem parts do not bot tom o ut and get dam ­
aged.
T his is espec ially true for veh icles with low­
s lu ng chassis (s por ts chassis)* and fully load­
ed vehicles.
Driving through water
on roads
Note th e following to avoid vehicle damage
whe n driving through water, for examp le on
flooded roads:
- The wa ter must not be any hig he r th an the
bottom of the vehicle body .
- Do not dr ive faste r than walk ing speed.