AUDI A4 CABRIOLET 2009 Owner's Manual

CRUISE
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~
i::::3
D
BRAKE

Q
Controls and equip­
ment
Tire pressure monitoring system*
USA models:
Cruise control activated
Canada models:
Cruise control activated
USA models:
Anti-lock brake system (ABS)
Canada models:
Anti -lock brake system (ABS)
Safety belt Power top operation
Left turn signal
Electronic stabilization program
(ESP)
Generator
High beam
Electronic power control
USA models:
Brake system, parking brake set
Canada models: Brake system, parking brake set
Right turn signal
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~ page 27
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Instruments and warning/indicator lights
& WARNING
• Failure to heed warning lights and other important vehicle
information may result in serious personal injury or vehicle
damage .
• Whenever stalled or stopped for repair, move the vehicle a safe
distance off the road, stop the engine, and turn on the emergency
flasher
~ page 82.
• The engine compartment of any motor vehicle is a potentially
hazardous area. Before you check anything in the engine compart­
ment, stop the engine and let it cool down . Always exercise
extreme caution when working under the engine hood
~ page 242, "Engine compartment" .
[ i] Tips
Many functions are monitored by the Auto-Check system
~ page 28. Malfunctions or faults will be identified either with a red
symbol (priority 1 -Danger!) or with a yellow symbol (priority 2 -
Warning) .•
Malfunction Indicator Lamp (MIL)
L.i (USA models)/ (Canada models)
The Malfunction Indicator Lamp (MIU is part of the On-Board Diag­
nos tic (OBD Ill system. The symbol,.. lights up when the ignition is
turned on and will turn off after the engine has started and has
settled at constant idle speed . This indicates that the MIL is wo rking
properly.
The warning light illuminates when there is a malfunction in the
engine electronic syst em . Contact your authori zed Audi d ealer and
have the malfunction corrected.
For more information
~ page 27 . •

Instruments and warning/indicator lights
Airbag system ~
This warning/indicator light monitors the airbag and the
tensioner systems.
The GA warning light illuminates for a few seconds each time you
switch on the ignition.
If the
ffl warning light does not go out, or if it illuminates while you
are driving, or if it starts to flash, then there is a malfunction some ­
where in the system. If the light does not illuminate when you
switch on the ignition, this also means there is a malfunction.
& WARNING
If you have a malfunction in the airbag system, contact your autho­
rized Audi dealer immediately. Otherwise the airbag or the belt
tensioner may not work properly in an accident. •
Tire pressure monitoring system -telltale
indicator lamp
D
The warning/indicator light appears in the event of a
significant loss of air pressure.
The warning/indicator light illuminates for a few seconds after
the ignition is turned on as function check and then goes out.
If the ( symbol appears, pressure is too low in at least one tire.
When the system detects a malfunction, the warning/indicator light
will flash for approximately one minute and then remain continu­
ously illuminated. This sequence will continue upon subsequent
vehicle starts up as long as the malfunction exists. Contact your
authorized Audi dealer and have the malfunction corrected.
For more information
=> page 43. •
Cruise control
CRUISE (USA models) / •0 (Canada models)
The CRU ISE warning/indicator light illuminates when the cruise
control is activated. •
Anti-lock brake system
(USA models) / (Canada models)
This warning/indicator light monitors the ABS and the
electronic differential lock (EDL).
The A S warning light will come on for a few seconds when the igni­
tion is switched on. The 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 illuminate 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.
Without the electronic assistance of the ABS, the brake system will
still respond and brake the car. Have the brake system checked and
restored to its full performance by an authorized Audi dealer as
soon as possible.
For more information regarding the ABS see
=> page 216.
Since any malfunction of the ABS also affects the ESP, that system's
warning symbol.,
=> page 22 will light up along with the n /
(Canada models) warning light.
Unspecific malfunction in the brake system
If both the brake warning light=> page 23 and the c.., warning light
illuminate when the parking brake is released, the likely cause is a
serious malfunction in the brake system beyond an inoperative ABS
=> & . ~

If an unspecific defect in the brake system is indicated, the entire
b rake system is likely to be a ffec ted a nd y ou mus t ex pec t degra ded
brake response and performance .
Since any malfunction of the ABS also effects the ESP, that system's
w arning symbol
=> page 22 w ill light up alo ng w ith t he ->-1 t
(Canada models) warning light.
Malfun ction in the electronic diff erential lock
(EDL)
The two systems E DL and ABS inte ract. For this reason the ,t.
warning light/ 3 (Canada mode ls) wi ll come on to indicate a
malfunction in the EDL system~
page 213. See your authorized
Aud i deale r as soo n as poss ib le.
& WARNING
• If the ,.r;_/ :· (Canada models) warning light does not go out ,
or if it comes on while driving, the ABS system is not working
properly . The vehicle can then be stopped only with the brakes
operating without ABS support . You will not have the protection
ABS provides. Contact your Audi dealer as soon as pos sible.
• USA models : If both the BRAKE warning light and the "
warning light come on at the same time , the rear wheels could
lock up first under hard braking. Rear wheel brake lock-up can
cau se loss of vehicle control and an a ccident. Have your vehicle
repaired immediately by your author ized Aud i dealer or a qualified
work shop. Drive slowly and avoid sudden , hard brake application.
• Canada models : If both the brake warn ing light ((j)) and the ABS
warning light come on at the same time , the rear wheels could
loc k up first under hard braking . Rea r wheel brake lock-up can
cause loss of vehicle control and an accident. Have your vehicle
repaired immediately by your authorized Audi dealer or a qualified
workshop. Drive slowly and avoid sudden, hard brake
application . •
Controls and equip ­
ment
Instrum ents and warning /indi cator lights
Power top.--·
Th e w arning/i ndicator lig ht m oni tors the power top fu n c­
tion .
The warning/indicator light illuminates when you switch on the
i gni tion f or about 2 seconds as a c heck a nd the n goes out . T he
warning/indicator light has the follow ing functions:
• The ligh t illu mina tes whe n the power top opens or c loses.
• T he light also illuminates if one of the requirements for powe r
t o p o per ation is not m et when the swi tc h i s ope rate d. In th is case
the instrument c luster display also shows a corresponding message
=> pag e 64, "M essage s in th e ins trum ent clus ter d isplay" .
• T he light illuminates when the power top is opened or c losed
inco mple tely. •
Saf ety belts i
Th is warn ing/i ndic ator l ight re minds you to p ut o n you r
s af ety b elt.
The ~ wa rning/ ind icator lig ht illum inates when the i gni tion is
switched on to remind the driver and (on USA models on ly) any front
p ass enge r to put on t he sa fety belt. A ddi tionally, a n acous tic
warning (gong ) will also sound .
F o r m ore Infor mati on =>
page 159, "Safe ty belt wa rning l ig ht ,(,.". •
Turn signals ¢ ¢
The indic ator l ight flas hes whe n you use either turn
si gnal.
When eve r y ou u se th e left ¢i o r the right 9 tu rn signa l, the indicato r
light flashes. When you use the emergency flasher, both ind icator
l ig ht s flas h. ...

Inst rum ents and warnin g/indi cato r li ghts
If one of the turn signal light bulbs burn out, the turn signal will
flash twice as fast as normal. •
Electronic Stabilization Program (ESP)
The warning/indicator light monitors the electronic stabi­
lization program.
The warning/indicator light has the following functions :
• it flashes while you are driving , when the ESP is working .
• it illuminates when you switch on the ignition for approximately
2 seconds as a function check .
• it illuminates when there is a ma lfunction in the ESP.
• it illuminates after the battery has been disconnected.
• it illuminates continuous ly when the ESP is switched off.
• it illuminates if there is a malfunction in the ABS, since the ESP
is part of the ABS system.
If the ESP warning/indicator light i lluminates and stays on after you
have started the engine , this may mean that the control system has
temporari ly switched off the ESP. If this is case, you can reactivate
the ESP by switching the ignition o ff and then on again. The
warning/indicator light should go out to show that the system is
fully functional again.
If the battery terminals were disconnected and re-connected, the
vehic le was jump started or the battery is very weak, the ESP sensor
system goes through a learning process for the first few yards.
During this time, the indicator light illuminates. It goes out as soon
as the learning process is comp lete .
For more information about the ESP~
page 22. •
Generator 0
T his warning/indicator light detects a malfunction in the
generator or in the vehicle's electrical system .
The D warning/indicator light illuminates when you switch on the
ign itio n and must go out after the engine has started.
If the
D warning/indicator light illuminates while you are driving,
you shou ld contact your authorized Audi dealer . Since the vehicle
battery is discharging, you should switch off any unnecessary elec ­
trical consumers (for example, the air conditioner) .
0 Note
If the -t warning/indicator light (ma lfunction in the engine coo ling
system) in the instrument cluster shou ld illuminate~
page 31, stop
the vehicle and turn off the engine. The coo lant pump is not working
- this can cause engine damage! •
High beam ~D
The@:Dwarning/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~
page 83. •
Electronic power control p
This warning/indi cator light monitors the electronic
power control.
The warning/indicator light (Electronic Power Control) il lumi-
nates when you switch on the ignition as a function check .

[ i] Tips
If this warning/indicator light illuminates while you are driving, then
there is a malfunction in the engine electronics. Have the malfunc ­
tion corrected as soon as possible by your authorized Audi dealer or qualified workshop. •
Brake system BRAKE (USA models)/ (CD)
(Canada models)
This warning/indicator light illuminates when the brake
fluid level is too low or when there is a malfunction in the
ABS, or when the parking brake is set.
The light illuminates when the ignition is turned on. It goes out after
the engine has been started and the parking brake is fully released.
This indicates that the brake warning light is functioning properly.
If the brake warning light does not light up when the engine is
cranking or the parking brake is applied, there may be a malfunction
in the electrical system. In this case, contact your Audi dealer.
(USA models): If the warning light BRAKE and the warning light
illuminate together, immediately contact your authorized Audi
dealer or qualified workshop to have all brake pads inspected
=:> page 33.
When the light comes on, an audible warning signal is also given.
Parking brake set
The BRAKE or ((D) (Canada) warning/indicator light illuminates when
the parking brake is set=:>& .
& WARNING
• USA models: If the BRAKE warning light and the . J'l warning
light come on together, the rear wheels could lock up first under
hard braking. Rear wheel lock-up can cause loss of vehicle control
Controls and equip ­
ment
Instruments and warning/indicator lights
& WARNING (continued)
and an accident. Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models: If the brake warning light (CD) and the ABS
warning light _. come on together, the rear wheels could lock up
first under hard braking. Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme­
diately by your authorized Audi dealer or a qualified workshop.
Drive slowly and avoid sudden, hard brake applications.
• If the brake warning/indicator light does not go out after a few
seconds and the parking brake released, or lights up while you are
driving, the fluid level in the brake fluid reservoir is too low. If you
believe that it is safe to do so, proceed immediately at low speed
to the nearest authorized Audi dealer or qualified repair facility
and have the brake system inspected .
• Always keep in mind that after several brake applications, you
will need greater pressure on the brake pedal to stop your vehicle.
Do not rely on strained brakes to respond with maximum stopping
power in critical situations . You must allow for increased braking
distances. The extra distance used up by fading brakes could lead
to an accident. •

Driver inf orma tion dis pl ay
Driver information display
Introduction
General notes
The driver information display inside the instrument
cluster provides you , the driver, with much useful infor­
mation.
Fi g. 9 Inst rum en t
c luster : ce nter dis play
The driver information system updates important information in the
c e nter display in clear view of the driver . In an easy to und erstand
format, the display tells you how your vehicle is functioning
a t the
c u rre nt mo ment .
For example, the display can tell you how many
mi les (kilometres) you can still dr ive unt il it is time to bring your
vehic le to your authorized Audi dealer for a scheduled Maintenance
Service . This feature helps preventing costly repairs . It is just one of
many different items of information available for recall . The display
also gives you a "status report" whenever the
so und and navi gati on
systems are being used . The operation of Audi Navigation System *
is described in a separate booklet.
The Driver Information System provides the following functions: Sound system display
Outside air temperature
Door open indicator
Selector
lever position Tiptronic®
Selector lever position multitronic™
Auto Check system Driver informat ion
Messages : power top operation
Par king brak e warning
Service interval display
Headlight/tail light malfunction
On -b oard computer
[ i ] Tip s
=> page 25
=> page25
=> page26
=> page 127
=> page 133
=> page 34
=> page 28
=> page29
=> page 64
=> page30
=> page 17
=> page 35
=> page 37
• If your vehicle has an automatic transmission , the various
display contents will appear only after you have moved the selector
lever into
R , D or S.
• In the event of a ma lfuction either a red or yellow icon appears
in the display. Red symbols indicate
Dan ger => page 30. Yellow
symbo ls indicate a
Warn ing => page 32 . •

Sound system display
Fig . 1 0 Displ ay : soun d
syste m
If priority 1 or priority 2 faults are not shown by the Auto Check
Control, the name of the radio station you are tuned to or the
frequency and the reception range are shown in the upper area of
the display .
When the CD is in use , the title of the track being p layed is shown .
The number of the CD (CD1 to CD6) currently being played is also
shown. •
Outside temperature display
Fig . 11 Dis pla y :
o utsi de tem perature
The outside temperature will be displayed when you switch on the
ignition=> fig. 11 . If your vehicle has an Automa tic transmission , the
Contro ls and eq uip­
ment
Dri ver informa tio n di spl ay
outside temperature will appear in the disp lay only after you have
moved the selector lever into a gear (for example, when you shift
into
" D ") .
The snowflake symbo l a lso appears when the outside temperature
is between 41 °F (+5 °C) and 23 °F (-5 °Cl. Th is is to warn you, the
driver, to be extra cautious because the road surfaces may be
i c y . If
the vehicle is at a standstill, or if you are driving at a very low speed, the temperature shown in the display might be slightly higher than
the actua l outs ide temperature. This is caused by the heat be ing
radiated from the engine.
Remember , if your vehicle is equipped with a ir conditioning and you
change the display from °F (Fahrenhei t) to °C (Centigrade), then the
outside temperature will automatically be displayed in
•c (Centi ­
g rade) =>
page 113.
& WARNING
• Never r ely exc lusiv el y o n th e out side t emp erat ure di spl ay to
determine if a ro ad sur face is icy or not. Keep in mind that road
s urf aces , esp eci ally br idge s and overpa sses, co uld b e ic e co ve red
and slipp ery even at an out side temperature above 41 °F (+ 5 °C l.
• Alway s re memb er, eve n if the "snowflake" sy mbol (ic e
warning ) does not ap pea r in the display , b lack ice cou ld be on the
r o ad .
• Alway s reduc e your speed and driv e with sp ec ial care in cold
we ather condition s when th e chance of en countering i cy ro ad
s urf ace s incr eases.
[ i ] Tips
When using the navigation system feature "Destination", the
outside temperature is also displayed. •
~ehicle care irechnical data

Driver inf orma tion d ispl ay
Miles (kilometers ) to empty
The miles (kilometers) to empty indication is a valuable
aid to schedule the refueling stops on a trip .
.,
8 :i: ., m
F ig . 12 Display: miles
(k ilo m eters} to empty
T his feature shows you the estimated range in miles (km)=> fig. 12
until the tank runs dry. This fea ture ca lculates how far you could
drive with the amount of fuel left in your fuel tank while driving
under the current driving conditions. The remaining distance is
recalculated every
6 miles (10 km) .
Whi le calculating the mi les (km) to empty, the system also ca lcu ­
lates your fuel consumption over the last
18 miles (30 km!.
Remember: -the more economically you drive, the further you can
go. •
Open door or trunk lid warning
Fig. 13 D isp lay: o pe n
door o r tr un k wa rning
With the ignition switched on, the open -door-or -lid warning illumi­
nates when at least
one door, or the engine hood or the trunk lid is
not closed. The symbol also shows you
which door(s) or lid is not
closed. The illustration shows that both the dr iver's and the right
rear door are not closed=>
fig. 13.
If the engine hood or trunk lid are not closed, the display will f lash.
As soon as all the doors and lids a re proper ly closed, the warning
goes out .
You can switch off the open -door -or -lid warning display by briefly
pressing the On Board computer control buttons=>
page 38. The
open door or trunk warning will, however, illuminate again as soon
as there is a change in the position of the doors, engine hood or
trunk lid. •

Fuel filler cap not closed properly
M ....
~ :c IX) m
Fig. 14 Center disp lay:
fu el f iller ca p open
A message C LO SE FUEL TANK CAP! in the driver information display
wi ll come on if the fuel filler cap is not properly closed . If the
message comes on, please perform the following steps upon
reaching your next destination.
With the ignition turned off, open the fuel filler flap and remove the
fue l cap. Next, reinstall the fuel cap being sure to twist the fue l filler
cap clockwise until you hear a definite "click." Press the fuel filler
flap closed until it locks into place (and is flush with the car body).
After switching on the ignition, the message may remain lit even
though the fuel filler cap is properly c losed . This is norma l and there
is no reason to take your vehicle for service .
I f, however, the Malfunction Indicator Lamp (MIU~ comes on,
always drive to your nearest authorized Audi dealer or qualified
workshop and have the vehicle checked .
For more information =>
page 246, "Refuelling".•
Controls and equip ­
ment
Driv er inf ormati on di spl ay
On-Board Diagnostic system (08D)
Malfunction Indicator Lamp (MIL) ?-1' (USA
models)/ (Canada models)
The Malfunction Indicator Lamp (M IU in the instrument cluster
=>
page 18, fig. 8 is part of the On-Board Diagnostic (OBD I I) system.
The warning/indicator light illuminates when the ignition is switched on and goes out after the engine starts and the idle has
stabi lized. This indicates that the MIL is working properly.
If the l ight doe s not go out after the engine is started, or illuminates
wh ile you are driv ing, a ma lfunc tion may ex ist in the engine system .
If the light starts flashing, the catalytic converter cou ld be damaged.
Continue driving
with r educ ed power (avo iding sustained high
speeds and/or rapid accelerations) and have the condition
corrected . Contact your authorized Audi dea ler.
I f the light illuminates, the electron ic speed limiter may also be
malfunctioning . For more information=>
page 28, "Electronic speed
limiter" .
An improperly clo sed fu el filler cap may also cau se the MIL l amp to
illuminate
=> page 246 . •

Driver information display
On-Board Diagnosti cs
Fig . 15 Location of
Data Link Connector
(DLC)
On-Board Diagnostics monitors the components of your emission
control system. Each controlled component in your engine system
has been assigned a code. In case of a malfunction, the component
will be identified and the fault stored as a code in the control module memory .
Th e MIL lamp may also illuminate if there is a leak in the on -board
fuel vapor recovery system. If the light illuminates after a refuelling,
pull off the road and stop the vehicle, then check that the fuel filler
cap is properly closed
=> page 246.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnostic equipment (generic scan tool for
OBDl.
In order to connect the special diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is located to the right of
the engine hood release lever=> fig. 15.
Your authorized Audi dealer or a qualified service station can inter ­
pret the code and perform the necessary repair. •
Electronic speed limiter
Your vehicle may be factory equipped with tires that are rated for a
maximum speed of 130 mph (210 km/h). This is less than the
maximum speed of your vehicle . To reduce the risk of sudden tire
failure and loss of control if the vehicle is operated at excessive
speeds, your vehicle also has an electronic speed limiter . The elec­
tronic speed limiter prevents your vehicle from going faster than the
tire speed rating. For more information=>
page 279, "New tires and
replacing tires and wheels".
If the engine control unit receives faulty vehicle roadspeed signals,
the Malfunction Indicator Lamp (Mill will illuminate. If this
occurs, contact the nearest authorized Audi dealer for assistance.
& WARNING
Always observe the posted speed limits and adjust your speed to
suit prevailing road, traffic and weather conditions. Never drive
your vehicle faster than the maximum speed rating of the tires installed. •
Auto-Check Control
Introduction
The Auto-Check control monitors the function of certain vehicle
features and components. It simply makes sure these features and
components are working properly. The Auto-Check control works as
long as the ignition is on, as well as whenever the vehicle is driven.
If a component is malfunctioning or if the need for an urgent repair
has been detected, this will appear in the instrument cluster display.
You will also hear an audible warning tone. The displays are color
coded in either red or yellow depending on their level of priority. .,_