2012 AUDI A5 COUPE differential

16 Instruments and warning/indicator lights
(l) Tire pressure monitoring system -
telltale indicator lamp
A ppl ies to vehicles: with tire pressure monit oring sys te m
The warning/indicator light appears in the
event of a significant loss of air pressure.
The ti) warning/ind icator light illuminates for
a few seconds after the ignit ion is turned on
as function check, and then goes out.
If the
(g symbol appears, pressure is too low
in at least one tire.
When the system detects a ma lfunction, the
warning/indicator light will flash for approx i­
mately one minute and then remain continu­
ously illum inated. Th is sequence will continue
upon subsequent vehicle starts up as long as
the ma lfunction ex ists. Contact your author­
ized Audi dealer and have the malfunction
corrected .
For more informat ion
c::> page 2 71 .
¢i 9 Turn signals
The indicator light blinks when you use either
turn signal .
Whenever you use the left B or the right II
turn signal, the indicator light blinks. When
you use the emergency flashers , both indica­
tor lights flash .
If one of the turn signal light bulbs burn out,
the turn signal will blink tw ice as fast as nor­
mal.
~ Safety belts
This warning/indicator light reminds you to
put on your safety belt.
The . warning/ indicator light illum inates
when the ignition is switched on to remind
the dr iver and (on USA models only) any front
passenger to put on the safety belt. Add ition­
a lly, an audible warning tone will a lso sound.
For more Information
c::> page 154, Safety
belt warning light.
o Malfunction Indicator Lamp (MIL)
The Ma lfunction Indicator Lamp (MIL) is part
of the On-Board Diagnostic (OBD II) system.
The
fcj symbol lights up when the ign ition is
turned on and will turn off after the engine
has started and has settled at a constant idle
speed. This indicates that the MIL is work ing
proper ly.
The warning light illuminates when there is a
malfunction in the engine electronic system.
Contact your authorized Audi dea ler and have
the malfunction corrected.
For more information
c::> page 26.
~D High beam
The II warning/indicator light illuminates
when the high beams are on or when you use
the headlight flasher. For more information
about using the high beams, see
c::> poge 52.
CRUISE/ (,)" Cruise control
Them! (USA models)/ . (Canada models)
warning/indicator light illuminates when the
cruise control is activated .
ABS/ (9) Anti-lock brake system (ABS)
This warning/indicator light monitors the ABS
and the electronic differential lock (EDL).
The warn ing/indicator light r4iS (USA mod­
els)!Ei] (Canada models) will come on for a
few seconds when the ignition is switched on.
T he light will go out after an automatic check
sequence is completed.
There is a malfunction in the ABS when:
-The warning/indicator light does not i llum i­
nate when you switch on the ignition .
- The warning/indicator light does not go out
after a few seconds.
- The warning/indicator light illuminates
while driving.
The brake system will still respond even
without the assistance of the ABS system.

Instruments and warning/indicator lights 17
See your authorized Audi dealer a s soon as
po ssible to restore full braking performance.
For mo re in format ion regarding the ABS
c:> page208.
The ABS warning light and the b rake warn­
ing light come on together. The ABS will not
work and you will notice a change in braking response and performance.
Malfunction in the brake system
If the b rake warn ing lig ht <=:> page 18 and
the ABS wa rn ing illumina te
together there
may be a ma lf u nction in the ABS, an d there
may a lso be a malf unct ion in the brake system
itself
c:> ,&. .
In t he event o f a malfunction in the brake
system
the warn ing/indicato r light _
(USA
models) ,11 (Canada models) in the in­
strument cluster flashes. By pressing the
! SE T!
b utton, you can bri ng up a dr iver message
which expla ins the ma lfu ncti on in more de ­
tail. Please note
c:> page 30 .
Malfunction in the electronic differential
lock (EDL)
The EDL works toget her with the ABS . The
A BS warning ligh t will come on if the re is a
malfunc tion in the EDL system
c:> page 205 .
See your au tho riz ed A ud i deale r as so on as
po ssib le.
.&_ WARNING
- If the m (U SA mode ls)/ 11] (Canada
mode ls) warn ing light does not go o ut,
o r if it comes o n while driving, the ABS
system is not working prope rly. The veh i­
cle can then be stopped only with the
standard brakes (without ABS). You will
not have the protection ABS provides .
Contact you r autho riz ed Aud i d ea le r as
soo n as poss ible.
- USA models: If the - warning ligh t
and
t h e m warning ligh t come on to­
ge ther, the rear w heels could loc k up
firs t un der har d b ra king. Rear wheel l ock­
up c an c ause loss o f vehicle con trol an d
an acc iden t. H ave your ve hicle re paired
-
immed iate ly by yo ur autho rize d Au di
dea le r o r a qua lified w ork shop. Drive
slowly and avo id sudden, hard brake a p­
plications.
- Canada models: If the brake warning
light . and the ABS war ning light
li]
come on togethe r, th e rear whe els could
loc k up firs t und er hard braking. Rear
wheel lock -up can caus e loss o f vehicle
con trol and an a ccide nt. Have yo ur vehi­
cle re pa ire d imme diately by your author­
i z ed A udi d ealer o r a qu alifie d wor ksh op.
D rive s low ly and avoid s udden, hard
brake applications .
:ru I<®> Electromechanical parking brake
The warning/indicator light monitors the
elec tromechanical parking brake.
Wi th t he pa rking brake applied and the igni­
tio n tu rn e d on, the. (US A
models) ,11 (C an ­
ad a models) warn ing/indi cator lig ht ill umi ­
nates . After the ignition has been t urne d off,
the wa rn ing/ indicato r light cont inues to ill u­
minate for about 30 seconds . If the parking
brake is applied w ith the ign ition t urned off,
the war ning/ indicato r light illum inates for
abo ut 30 seconds .
The wa rning/indicator light wi ll go out when
the pa rking bra ke is re leased .
If the warning/indicator light flas hes continu­
o us ly
after applying the parking bra ke, brak ­
ing fo rce is not s uff icient to prevent the vehi­
cle from rolling unintentionally . Please note
the followi ng:
- If the slo pe of the ground is too steep to
park the vehicle, the addit ional drive mes­
sage appea rs
Caution : Vehicle parked too
steep .
- In the eve nt of a pa rking bra ke malfunction,
the yellow
IIJ symbol appears in the instr u­
ment cluste r display a nd the driver message
Parking brake malfunction! is display ed .
Have t he ma lf u nct ion r epair ed as soon as
po ssible by a n authoriz ed Audi dea le r or a ny
o th er q ualifi ed w orksh op.

204 Intelligent technology
Intelligent technology
Notice about data
recorded by vehicle
control modules
Your veh icle is not equipped with an Event Da­
ta Recorder (EDR), installed by some manu­
facturers fo r 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 retrieval 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 example, engine function, emis­
sion control, as well as for the airbags and
safety belts .
These electronic control modules also record
vehicle-related data during normal 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 pe riod 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)
General information
The ESP improves the vehicle stability .
Fig. 195 f;. OFF button
Fig. 196 Center console wit h ~ OFF button
ESP is designed to help you maintain vehicle
control in situations where the car approaches
the limits of "grip", especia lly when accelerat­
ing and cornering . ESP reduces the risk of
skidding and improves stability under all road
conditions .
The system operates across the ent ire speed
range in combination with the ABS system . If
the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP will also shut down.
How the system works
The Anti -Lock Brake System (ABS), Electronic
Differential Lock (EDL) and the Anti-Slip Regu­
lation System (ASR) are integrated in the elec­
tronic stabilization program. In addition to
the data provided by these functions, the ESP
control unit requires additional measurement
data provided by high performance sensors.
T he rotational speed of the vehicle about its
II>-

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>
•
•

210 Intellig ent technol ogy
- If the power steer ing system should fail
entirely, or if the engine is not running (for example, while being towed), you
will still be ab le to steer the vehicle.
However,
considerably more effort w ill
be required to do so .
- If the power steer ing system should
have a leak, or is not functioning proper­
ly, contact your authorized Aud i dealer
i mmediately.
- The power steering system requires a
spec ially formulated hydraulic flu id . T he
power steer ing reservoir is the one locat­
ed farthest to the rear on the left side of
the engine compartment~
page 239.
The correct flu id leve l in the reservo ir is
important for proper functioning o f the
power steering.
Driving with your
quattro ®
With all wheel drive, all four wheels are driv­
en.
Gener al inform ation
W ith all wheel dr ive, power is distr ibuted to
all four wheels . This happens automatically
depending on your dr iving style and the road
conditions at the t ime . See also ~
page 205,
Electronic differential lock (EDL) .
The all wheel drive concept is designed for
h igh engine power . Your vehicle is exception­
ally powerful and has excellent dr iving charac­
ter istics both under normal driving conditions
and on snow and ice . Always read and follow
safety precautions
~ ,&. .
Winter tires
When driving in the w inter, your vehicle w ith
all wheel drive has an advantage, even with regular t ires. In winter road conditions it may
be adv isable to mount winter t ires (o r all-sea ­
son t ires) for improved driveability and brak­
ing : these tires must be mounted on all four
wheel s. See also
q page 267, Winter tires .
Tir e chain s
Where tire chains are mandatory on certain roads, this norma lly also app lies to vehicles
with all wheel drive~
page 268, Snow
chains.
Replacing wheels /tires
Vehicles with a ll wheel d rive must always have
ti res of the same s ize. A lso avo id tires w ith
different t read dep ths . For detai ls see page
~ page 263, New tires and replacing tires
and wheels .
Off-Road dr iv ing?
Your Audi does not have enough g round clea r­
ance to be used as an off-road vehicle .
It is
therefore best to avoid rough tracks and un ­
even terrain as much as possib le . Also refer to
9 page 214.
A WARNING
-
Always adjust your dr iv ing to road and traf-
f ic conditions. Do not let the extra safety
afforded by all whee l drive tempt you into
taking extra risks.
- Although the all whee l drive is very effec­
tive, always remember that braking ca­ pacity is limited by tire tract ion. You
should t herefore not d rive at excessive
speeds on icy or slippe ry road s urfaces.
- On wet road surfaces, be careful not to
drive too fast because the front whee ls
co uld begin to slide on top of the water
(aquaplaning) . If th is should occur, you
wi ll have no warning from a s udden in ­
crease in engine speed as w it h a front­
wheel drive veh icle. Always drive at
speeds which are su ited to the road con­
ditions -risk of crash.

302 Index
Efficiency program . . . . . . . . . . . . . . . . . . . 24
Fuel economy messages . . . . . . . . . . . . . 26
Memory leve ls . . . . . . . . . . . . . . . . . . . . . 23
Other equipment . . . . . . . . . . . . . . . . . . . 25
Shift indicator . . . . . . . . . . . . . . . . . . . . . 25
Electrical seat adjustment
refer to Seat adjustment ........... . . 63
E lectromechan ical park ing brake
E mergency braking . . . . . . . . . . . . . . . . . 98
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 99
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 96
Parking .... ................ ..... .. 97
Releasing and closing ............. . . 96
Starting assist ........... .. .. .. .. .. 98
Starting from rest .......... .. .... .. 98
Starting off with a trailer . . . . . . . . . . . . . 98
Warning/ indicator lights .... ..... .. .. 17
Electronic differential lock (EDL) How the system works ....... .. .... . 205
Warning/indicator lights ... .. .. .. .. . . 16
Electronic immobilizer . . . . . . . . . . . . . . . . 39
Electronic power control
(EPC) warn ing/ indicator light ... .. .. . . 15
Electronic stabili zation program (ESP)
How the sys tem works ....... .. .. .. . 204
Warning/indicator lights ....... .. .. .. 15
Emergency braking . . . . . . . . . . . . . . . . . . . 98
E mergency flasher . . . . . . . . . . . . . . . . . . . 52
Warn ing/ indicator lights ..... .. .. .. . . 16
Emergency key . . . . . . . . . . . . . . . . . . . . . . 3 7
Start ing engine ........... ... .. ... . 39
Emergency locking of the doors ..... .. .. 44
E mergency release
Selector lever ............ .. .. .... . 132
E mergency starting ......... ... .. .. . 284
Emergency towing .......... ... .... . 286
E mergency unlocking
I gnition key ........... .. .. .. .. .. .. 39
Energy management ..... .. .... .. .. . 211
Battery power ............... .. ... 212
Driver notification . ......... .. .. .. . 212
E ngine
Compartment . ........... .. .. .... . 239
Coolant .. .. ............... .. .... . 244
H ood .. .. .. ................ ... .. . 237
Starting ... ... .... ...... .. .. .. .. .. 92 Starting
with jumper cables ....... .. 284
Stopping . ..... .. .. .............. .. 94
Engine compartment Safety instructions ............. .. .. 23 7
Working the engine compartment .... 237
Engine coolant system ............ ... 244
Adding coolant . .. ................ . 245
Checking coolant level ............ .. 244
Checking the engine coolant level ..... 244
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 31
Radiator fan ..... ................ . 246
Engine coolant temperature
T emperature gauge . ........... .. .. . 10
Engine data . .... .. ............. .... 292
Engine hood
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7
How to release the hood . . . . . . . . . . . . 23 7
Engine oil ...... .. ............. .... 239
Adding . .. .. .. .. ............. .. .. 242
Additives . ... .. .. .. .............. . 242
Changing ..... .. .. .............. . 243
Check oil level ... ............. .... 242
Consumption .. .. ............. .. .. 242
Oil consumption .. ... .......... .. .. 241
Oil grades . .... ................... 239
Specification and viscosity ........ ... 239
Engine oil level .... ................ .. 36
Engine oil pressure
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 31
Engine oil sensor defective . . . . . . . . . . . . 36
Engine speed limitation . . . . . . . . . . . . . . . 36
Environment Break-in period . .. ............. .... 213
Catalytic converter ............. .... 214
Disposing of your vehicle battery ..... 251
Driving at high speeds .............. 215
Driving to minimize pollution and noise 215
Fuel .. .. .. .. .. .. ............. .. .. 234
Fuel economy .. .. ... .......... .. .. 215
Leaks under your vehicle .......... .. 23 7
Letting the vehicle stand and warm up. 216
Proper d isposal of drained brake fluid . 247
Proper disposal of drained engine cool-
ant .. .. .. .... .. ............. .... 245
Proper disposal of drained engine
oi l . . . . . . . . . . . . . . . . . . . . . . . . . 242, 243
Recycling used engine oil ............ 242