2013 AUDI A5 COUPE engine

136 Safet y belt s
with the vehicle interior has all the energy
they had just before the crash.
Neve r rely on airbags a lone for p rotec tion.
Even when they deploy, airbags provide only
addit io nal p rotection . Airbags are not sup­
posed to deploy in all kinds of accidents. Al­
though your Audi is equipped with a irbags, all
vehicle occupants, including the driver, must
wear safety belts correctly in order to min i­
mize the risk of severe injury or death in a
crash .
Remember too, that airbags wi ll deploy on ly
once and that your safety belts are always
there to offer protection in those accidents in
which airbags are not supposed to deploy or when they have a lready deployed . Unbelted
occupants can also be thrown out of the vehi­
cle whe re even more severe o r fatal in juries
can occu r.
It is also impo rtant for the rear passenge rs to
wear safety belts correctly. Unbelted passen­
gers in the re ar seats end anger no t on ly them­
selves but a lso the d river a nd other passen­
gers ~
fig. 134. In a frontal collision they will
be thrown forward violent ly, where they can
h it and injure the dr iver and/or front seat pas ­
senger.
Safety belts protect
People think it's possible to use the hands to
brace the body in a minor collision. It's simply
not true!
F ig . 135 Driver is co rrectly re st ra ined in a s udden b rak ·
i n g m an euve r
Safety belts used properly can make a big dif­
ference . Safety be lts he lp to keep passengers
in their seats, gradually reduce energy levels applied to the body in an accident, and help
prevent the
uncontrolled movement that can
ca use serio us in juries . In addition, safety be lts
reduce the danger of being thrown out of the
vehicle .
Safety be lts attach passengers to the car and
give them the benefit of being slowed down
more gently or "softly" through the "give" in
the safety belts, crush zones and other safety
features engineered into today's vehicles. By
"abso rbing" t he kinetic energy over a longer
per iod of t ime, the safety belts make the
forces o n the body more " tolerable" and less
l ikely to ca u se inju ry.
Although these examples are based on a fron­
ta l co llision, saf ety belts can a lso substantia l­
ly red uce the r isk of injury in other kinds of
cr ashes. So, whether you're on a long t rip o r
j u st going to the corner store, a lways buckle
u p and make sure others do, too. Accident sta ­
tistics show that veh icle occupants properly
wearing safety belts have a lower risk of be ing
injured and a much better chance of surviving
an accident. Properly using safety be lts also
greatly increases the ability of the supplemen ­
tal airbags to do the ir job i n a collision. Fo r
t hi s reason, wea ring a safety belt is legally re­
quired in mos t countr ies includi ng mu ch of
t h e Un ited States and C anada .
Althoug h your Aud i is equipped with a irbags,
you still have to wear the safety be lts prov id­
ed . F ront ai rbags, fo r example , a re ac tivated
o nly in some front al coll isions. The fron t air­
bags are not act ivated in a ll fron tal collis ions,
in side and rear co llisions, in roll overs or in
cases where there is not eno ugh deceleration
through impact to the front o f the veh icle.
The same goes for the other a irbag systems in
your Audi. So, always wear your safety belt and make su re everybody in your veh icle is
properly restrai ned !

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
Control (ESC)
Description
ESC 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. ESC detects
Intelligent technology 185
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
JjJ in the instrument cluster
blinks when ESC is taking action to help you
control the vehicle.
ESC has limitations .
It is important to remem­
ber that ESC 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, ESC 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, ESC 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), ESC 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, ESC cannot always deal as effectively
with difficult driving situations than at lower
speeds. When towing a trailer, ESC 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. ESC 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, ESC 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 ESC can
provide any assistance, you may not experi­
ence the benefits of ESC.
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186 Intelligent technology
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
e lectronic interaxle differentia l lock* /selective
wheel torque control* . ESC is switched on all
the t ime. I n certa in s ituations whe n you need
l ess t raction, you can switch
off ASR by p ress­
i ng the bu tto n
[ru ¢ page 187, fig. 161 or
¢ page 187, fig. 162. Be sure to sw itch ASR
on aga in when yo u no longer need less t rac­
tion .
Anti -lock braking system (ABS)
ABS prevents the wheels from locking up
when braki ng. The veh icle can still be steered
even d uring h ard br aking. Apply ste ady p res ­
sure to the brake pedal. Do no t pump the ped­
a l. A pulsing in the brake peda l indicates t hat
the system is he lping yo u to b rake the vehicle .
Brake assist system
The brake assis t system can decrease b ra ki ng
d ista nce. It incre ases braking power w hen the
d river p resses the brake pedal q uic kl y in eme r­
gency situations . You must p ress and hold the
b rake peda l until the situation is over. In
vehicles w ith adapt ive cru ise contro l", the
brake assist system is more sensit ive if the
d ista nce detected to t he vehicle a head is too
small.
Anti-slip regulation (ASR)
ASR reduces engine power when the drive
wheels begin to spin and adapts the fo rce to
the road condit ions. This makes it eas ier to
start , accelerate and drive up hills.
Electronic differenti al lock (EDL )
The ED L brakes wheels that are spinn ing and
transfers the drive power to the other drive
wheel or whee ls if t he vehicle is equipped with
all-w heel drive*. This function is available up
to abo ut 60 mph (100 km/h).
In extreme cases, EDL automat ica lly switches
off to help keep the bra ke on the braked whee l
from overheating. EDL wi ll switch on again au-tomat
ica lly when conditions have ret urned to
no rma l.
Dynamic steering*
On vehicles wi th dynam ic steering*, ESC he lps
st abiliz e the steer ing in cr itical situ ations.
Electronic interaxle differential lock* /
selective wheel torque control*
T he elec troni c int eraxle differentia l lock (front
whee l dr ive) o r th e se lec tive whee l torque
control (all-whee l dr ive) oper ates when dr iv ­
ing t hro ugh curves. The front w heel on the in ­
side of the c urve or both whee ls on the inside
of the c urve are b raked se lectively as needed.
This m inimizes sliding in the front wheels and
allows for more precise driving through
curves . The applicable system may not acti­
vate when dr iving in wet o r snowy cond itions.
A WARNING
- ESC, ABS, ASR, EDL dynam ic steering*
an d the ele ct roni c interaxle differential
lo ck* /se lective whee l torque con trol *
fu nction canno t over come the laws of
p hys ics. Th is is especially important on
slippe ry or wet roads . If the systems be­
g in acting to stabilize yo ur vehicle, you
should immediately change yo ur speed
to match the road and traffic conditions. Do not let the increased safety provided
by these systems tem pt you to ta ke risks.
Doing so will increase the risk of a loss of
veh icle cont ro l, col lision and ser ious per­
sonal injur ies.
- Always ada pt your speed to road, traffi c
a nd wea ther condi tions. The risk of los-
ing con trol of the vehicle increases when
d riving too fast, es pec ia lly through
curves and o n slippe ry or wet roads, an d
when dr iv ing too close to vehicles up
ahead. ESC, ABS, the brake ass ist sys­
tem, ASR, EDL dynam ic steer ing* and the
e lectronic inte raxle differentia l lock*/se­
lec tive whee l to rque control* func tion
cannot prevent collisions.
-

-Always acce lerate with specia l care on
even, smooth surfaces s uch 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.
(0 Tips
- ABS and ASR on ly work correctly when
all four wheels are equ ipped w ith ident i­
ca l tires. Different tire s izes can lead to a
reduct ion i n eng ine power.
- You may hear noises when the systems
described are wo rking .
- If the indicator light D] or m!S (USA
models) ;tiJ (Canada models) appears,
the re may be a malfunct ion
c::> page 19,
~ page 19.
Switching on/off
ESC turns on automatically when you start
the engine .
Fig . 161 Vers ion A: low er c en ter co nsol e, fj. OFF bu t­
to n
Fig. 162 Ve rsio n B: upper ce nte r console,~ OFF bu t­
to n
Intelligen t technolog y 187
Turning off ASR
In some sit uatio ns, it may be useful to switch
ASR
off to a llow the wheels to spin . For exam­
ple:
- Rocking the vehicle to free it when i t is st uck
- Dr iving in deep snow or on loose ground
- Dr iving with snow chains
Qu ick ly press the
I~ O FF I button c::> fig. 161
and c::> fig . 162. The Ii indicator light turns on
and the message
Trac tion control (A SR) : Off.
War ning! R estrict ed stability
appears in the
display .
It i s only possible to turn
off the ASR up to
30 mph (SO km/h) for vehicles wi th front
wheel drive . At about 45 mph (70 km/h) it au ­
tomat ically turns on again .
It is possible to
turn
off the ASR at any speed fo r vehicles with
all wheel drive .
Turning off ESC
Press and hold the I;; OFFI button for three
seconds . The
fl ESC indicator light turns on
and the message
Stabil ization cont rol (ESC ):
o ff . Warni ng ! Re str icted stab ilit y
appea rs in
the d isplay. ASR is also sw itched
off when ESC
i s sw itched off.
Switching on
Press the j ;; O FFI button again . The fi indica­
tor light t urns on and the message
St abi liz a­
t ion control (ESC ): On
appears in the disp lay.
_&. WARNING
- Drive whee ls can sp in and you can lose
contro l of the vehicle more eas ily when
ASR and ESC are switched off, especia lly
when the road is s lippery .
- Switch ASR/ESC
off only when yo ur driv ­
ing skills, traffic and weather conditions
permit.
@ Tips
You cannot sw itch ASR and ESC off when
adaptive cruise control* is working .
-

188 Intelligent technology
Braking
What affects braking efficiency?
New brake pads
During the first 250 miles (400 km), new
b rake pads do not possess their fu ll braking
effect , they have to be "broken in" first¢.&. .
You can compensate for this slightly reduced braking power by push ing harder on the brake
pedal. Avoid heavy braking loads during the
break-in per iod.
Operating condition s and d riv ing hab it s
The brakes on today's automob iles are st ill
subject to wea r, 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 b rake pads should be checked by your author­
ized Audi dealer more often than specified in
the
Warranty & Maint enan ce booklet . Failure
to have your b rake pads inspected can res ult
in red uced brake pe rformance.
On steep slopes, you shou ld use the brak ing
effect of the engine. This way, you p revent un­
necessa ry wear on the brake system. If yo u
must use yo ur brakes, do not hol d the brakes
down continuously. P ump the brakes at inter ­
va ls.
Operating noise
Noises may occur when braking depending on
the speed, brak ing fo rce and outside condi­
tions such as temperature and humidity.
Effect of water and road salt
In ce rtain situat ions, for example after driving
through water , in heavy ra in, after overn ight
conde nsation or afte r washing your car, the
b rak ing effect can be redu ced by mois ture or
ice on the brake rotors and brake pads . The
brakes must be dried first with a few careful
brake applications .
A t higher speeds and with the w indshield w ip­
ers turned on, the brake pads press against
the brake rotors for a short amount of time .
This occurs at regular intervals witho ut the driver noticing and p
rovides fo r bette r brake
response time under wet conditions .
T he effec tiveness of the brakes can be red uced
when the vehicle is d riven on a sa lt -covered
r oad and the brakes are not used . Likewise,
you clean off accumulated salt coating from brake d iscs and pads with a few cautio us ap­
plicat ions of the brake ¢ .&. .
Corro sio n
The re may be a tendency for di rt to b uild up
on the brake pads and corrosion to form on
the discs if the car is not driven regularly or only fo r short trips w ith litt le use of the
brakes.
If the brakes are not used frequently, o r if cor ­
rosion has formed on the discs, it is advisable
to clean off the pads and d iscs by braking
firmly a few times from a moderately high
speed ¢.&. .
Fault s in the brak e syst e m
If you s hou ld notice a sudden increase i n
brake pedal trave l, then one of the two brake
c ircuits may have failed ¢.&. .
Low brake fluid level
Malfunctions can occ ur in the b ra ke system if
the brake fluid level is too low. The brake fluid
l evel is monitored electronica lly.
Brake booster
T he bra ke booster inc reases the pressure that
you generate wi th the b rake peda l. It works
o n ly when the engine is runn ing .¢ .&.
Brake lining wear status
Brake lining wear may be checked by visual in­
spect ion of the condition of the brake pads
th rough the ope nings in the wheel. If neces­
sary, the wheel may be removed for t his in­
spect ion ¢
page 253, Changing a wheel.
_& WARNING ,____
-New b rake pads don't have the best stop­
p ing power and m ust be "broken-in" dur-
ing the initial 100 to 150 miles (150 to
11>-

200 kilometers) of normal city driving.
You can compensate for this by press ing
the brake pedal more firm ly. This also
applies later when new pads are instal­
led .
- You should perform brak ing maneuvers
for the purpose of clean ing the brake
system only if road cond it ions permit.
Other road users must not be put at r isk -
you may cause an acc ident!
- Before descending a steep grade, reduce
speed and shift transmiss ion into a lowe r
gear or lowe r 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 diminish braking
efficiency.
- Do not "ride the brakes" by resting your
foot on the pedal when yo u do not intend
to brake. Th is may cause the brakes to
overheat, premature wear and increased
stopp ing distance.
- Under certain climat ic and operating
condit ions such as passing through wa­
ter, driving in heavy rain or after wash ing
the vehicle, the effect iveness of the
brakes can be reduced. In winter, ice ca n
a ccumulate on the brake pads, linings,
dis cs and d rums. Carefully apply brakes
f or a test . Brakes will dry and ice coat­
ings will be cleaned off after a few ca re ­
ful brake applications.
- Driv ing fo r an ex tended period of time on
salt-covered roads without using your
brakes can also affect braking efficiency.
Clean off accumulated salt coating from
brake discs and pads w ith a few caref ul
brake applicat ions.
- If you damage the front spoiler, or if you install a different spoiler, be sure the air
flow to the front brakes is not obstruct­
ed . Otherwise the brake system co uld
overheat reducing the effectiveness of
t h e ent ire brake system.
- Failur e of one bra ke c ircuit will impair
t h e braking capability resulting in an in­
cr eased stop ping distan ce. Avoid driv ing
the vehicle and have it towed to t he near-
Int ellig ent technolog y 189
est a uthorized Audi dea ler or q ualified
workshop.
- Never let the ve hicle roll to a stop with
the engine shut off.
- If the brake booster is not working, for
examp le when towing you r vehicle, or
because the brake booster has somehow
been damaged, the bra ke pedal must be
pressed considerably harder to make up
for the lack of booster assistance .
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps
the driver when steering.
Power steer ing adapts electronically based on
the ve hicle speed .
Indicator lights and messages
• Steering d efective! Do not driv e vehi cle!
If this indicato r light tur ns on and stays on
and t his message appears, the power steer ing
may have failed .
Do
not continue dr iv ing . See your author ized
Audi dealer or other qualified repair facility
fo r ass istance.
':r,y Dy namic steer ing: System fault! You can
continue driving
If the indicator light turns on and the mes­
sage appears, the steering may be more diffi­
cu lt to move or more sensit ive tha n usual. The
steering wheel may a lso be at an ang le when
dr iv ing straight .
Drive slowly to your a uthorized Audi dea ler or
qualified workshop to have the ma lf u nction
corrected .
'Taj Dynamic steering: init ializing
If this drive r message appears and t he in dica ­
tor light is flashing on the instrumen t panel,
dynamic steering * is being rei nitialized. Once
you start the engine afte r this is finished, the .,..
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190 Intelligent technology
steering wheel will be easy to move. Re­
initia lization might be necessary if the steer­
ing whee l was moved hard to the left and
right while the vehicle was not moving. The
d isplay goes out as soon as in itia lizat ion is
comp lete.
A WARNING
Have the dynamic steering* system ma l­
function repaired as soon as poss ible by an
authori zed A udi dealer or any qualified
workshop -risk of accident!
- If the . or
l:r-ij indicator light on ly stays
on for a short t ime, yo u may continue
drivi ng.
- The dynamic steering * stability systems
are not available in the event of a system
malfunction.
- Fo r additional informat ion on dynamic
stee ring*, refer to ¢
page 109.
Driving with your
quattro ®
Applies to vehicles: with all-wheel drive
With all-wheel drive, all four wheels are driv­
en.
General information
W ith all-whee l drive, power is distribute d to
a ll fo ur whee ls. This happens automat ica lly
d epending on your dr iving sty le and the road
conditions at the t ime. See also¢
page 185 .
A cen ter different ial d istr ib ut es the dr iv ing
power var iably to the front and rear axle. It
wo rks together with se lective whee l torque
control, which activates when driving throug h
curves ¢
page 186. With the sport differen ­
tial*, power distribution to the rear wheels is
variable and can be adjusted with Audi drive se lect ¢
page 109 .
The all-wheel drive concept is designed for
h igh engine power . Your vehicle is exception­
ally powerful and has exce llent dr iving charac ­
terist ics bot h under normal driving conditions and on snow and
ice . Always read and follow
safety precautio ns ¢ &. .
Winter tires
When driving in t he win ter, yo ur vehicle wi th
all-wheel d rive h as an adv antage, eve n w it h
r egular tires. In wi nte r road conditions it may
be advisable to mount winter tires (or all -sea ­
son tires) for improved driveability and brak­
i ng : these tires must be mounted on
all fou r
wheels . See also ¢ page 246, Winter tires.
Tire chains
Where tire chains are mandatory on certain
roads, this no rma lly also app lies to ve hicles
with all-wheel drive¢
page 247, Snow
chains .
Replacing wheels/tires
Vehicles wi th a ll-wheel drive m ust always
have ti res of t he same s ize. A lso avoi d tires
with differe nt t read depths . For detai ls see
page ¢
page 242, New tires and replacing
tires and wheels.
Off-Road dr iving?
You r A ud i does no t have e nough gro und clea r­
ance to be used as an off -road vehicle .
It is
t h e refore best to avoid roug h tracks and u n­
even te rrain as much as possib le . Also refer to
¢ page 193.
A WARNING
Always ad just your dr iv ing to road and traf­
f ic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking ext ra risks .
-Al though the a ll-wheel drive is ve ry ef­
fective, always remember that braking capacity is lim ited by tire t raction. You
s hould t herefore no t drive at ex cessive
speeds on i cy or slippe ry road surfa ces.
- On wet road surfa ces, be careful not to
d rive too fast because the fr on t whee ls
could begin to slide on top of the water
(aquaplaning) . If thi s should occur, you

will have no warning from a sudden in­
crease in engine speed as with a front­
wheel drive vehicle. A lways drive at
speeds wh ich are suited to the road con­
ditions -risk of crash .
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
i s not driven for a long period of time, the bat­
tery is discharged by idling current consumers
(e.g. immobilizer) . In certain circumstances it
can result in there being insufficient energy
avai lab le to start the engine.
I ntelligen t energy management in your vehi­
cle handles the distribution of electrical ener­
gy . Starting ability is marked ly improved and
the life of the battery is extended .
Basically, energy management consists o f
battery diagnosis, idling current manage­
ment
and dynamic energy management.
Battery diagnosis
Batt ery d iagnosis continuously dete rmines
the state of the battery. Sensors determine
battery voltage, battery current and battery
temperature. This determines the current
state of charge and the power of the battery.
Idling current management
I dling current management reduces energy
consumption while the vehicle is stand ing.
With the ignition switched off, it contro ls the
energy supply to the various electrica l compo­
nents . Data from battery diagnosis is consid­
ered.
Depending on the battery's state of charge,
individual consumers are gradually turned off
to prevent excessive discharge of the battery
and thus mainta in start ing capability.
Intelligent technology 191
Dynamic energy management
While the vehicle is being driven, dynamic en­
ergy management distrib utes the energy gen ­
erated according to the needs of the individ u­
al components. It regulates consumption, so
that more e lectrical energy is not being used
than is being generated and ensures an opti­
mal state of charge fo r the battery .
{!) Tips
- But even energy 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 highest priority is given to maintaining
starting capability.
The battery is severe ly taxed in short-distance
driv ing, in city traff ic and during the cold time
of year. Abundant electrical energy is re­
quired, but on ly a little is generated . It is also
c rit ical if the engine is not running and electri­
ca l components are turned on. In this in­
stance ene rgy is be ing consumed but none is
being generated .
It is in precisely these situations that you will
notice energy management actively regulat­
in g the distribution of energy.
Vehicle stands for an extended period
If you do not drive your vehicle over a period
of several days or weeks, electr ical compo ­
nents are gradually cut back or switched off .
T h is reduces energy consumption and main­
tains starting 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
functions will be available again when you
switch on the ignition and start the engine.
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