2009 AUDI A4 CABRIOLET ECU

Driver inf orma tion d ispl ay
Parking brake warning
- Release the parking brake.
If you should drive off with the parking brake sti ll engaged, a
warning tone wi ll sound to remind you to release the parking brake.
Also , the following message will appear in the display:
H and bra ke is a ppl ied
The parking brake warning is activated when you drive longer than
3 seconds and faster than 3 mph (5 km/h) .•
Red symbols
A red symbol means DANGER.
- Pull of the road and stop t he vehicle.
- Turn off the engine .
Fig . 17 Disp lay : eng ine
coola nt le v el wa rning
(p riority 1)
- Check the malfunctioning system. Contact your aut ho-
rized Audi dea ler or a qualified workshop for assistance.
The red symbols mean:
BRAKE
U SA m od els: => page30 Ma lfunction in the brake system

Can ada m od els: => page30 Ma lfunction in the brake system
- L Engine coolant level too low/ => page 31 COOLANT engine coolant temperature too high
~ Engine oil pressure
OIL PRES -=> page 32 too low
SURE
Red symbols indicate a priority 1 malfunction -Danger!
When a red symbol appears, a warning tone w ill sound consecu ­
tively
three times. The symbo l continues to flash until the malfunc­
tion has been repaired . If there are
more than one priority 1 malfunc ­
tions, the symbols appear one after the other for about two
seconds. a
Brake system malfunction
BRAKE (USA models) /
(CD) (Canada models )
A malfunction in the brake system must be repaired as
soon as possible.
When BRAKE / (Canada models) appears in the display
and flashes, this means there is a ma lfunction in the brake
system. In add ition to the symbo l, one of the following two
messages also appears in the display:
Stop v ehi cle, che ck br ake flu id and hydrauli c fluid lev els
Warning! Fault in ABS brak e system. Contact workshop!
- Pu ll of the road and stop the vehicle.
- Check the brake fluid level ~
page 260 .

Opening and closing
Keys
Key set
@ Master key w ith rem ote con tro l
Fig . 3 6 Key set
You can centrally lock and unlock your vehicle and start the engine
with the master key with remo te contro l.
@Val et k ey
The va le t key fits only the driver's door and the ignition lock. If you
have to leave the key with somebody else, you are well-advised to
turn over the valet key only.
Be aware that the rear lid can be opened from inside t he veh ic le with
the remote rear lid release located in the driver's door. Before you
turn ove r the valet key you should therefo re lock the rear lid
mechanica lly with the master key.
Turn t he master key
clo ckwi se to the hor izont al posit ion and pull it
out. This has two effects:
• the
remote rear lid release i s dea ctivated ,
• the lid will rem ain lo cked when the power locking system is actu­
ated .
Controls and equip ­
ment
Op ening and clo sing
In this state the rear lid can be unlocked only with the remote
control unlock button
c::::5 on the master key.
© Em erg en cy key
The emergency key is only for temporary use if the vehicle key
should be lost or misplaced
~ & .
Key r epla cemen t
If you lose a key, contact your authorized Audi dea ler immediately
to have the /ostkey disab led. Be sure to bring all your keys with you.
& WARNING
• Do not leave your vehicle unattended wi th the key in the igni ­
tion lock. Entr y by un auth orized persons could e ndanger you or
re sult in theft or damage the vehi cle . Always lock all door s and
t a ke th e key.
• Do not le ave children unattend ed
in the vehicle , es pecially with
a cce ss to vehic le key s. Unguarded a ccess to the ke ys prov ide s
children th e opportunity to start th e eng ine and /or a ctivate vehicle
s y stem s suc h as the po wer w indo ws. Un sup erv is ed oper atio n of
an y vehi cle sy ste m by children can re sult in seriou s injury .
[ i ] Tips
• If you open the driver's door with the key left in the ignition lock,
a chime will sound . This is your reminder to remove the key and lock
the door .
• For security reasons, replacement keys are only available from
Audi dealers. •

& WARNING (co ntin u ed)
• Do n ot l ea ve c hildr en i ns ide th e vehicle un sup erv is ed. In an
e m erg en cy it w ould be impo ssible to op en the door s from the
out side without the key.
[ i ] Tip s
• In the event of a crash with airbag deployment all locked doors
wi ll be automat ically unlocked to give access to the vehicle occu­
pants from the outside.
• If the power locking system should fail, you can st ill open the
fue l tank flap in an emergency~
page 248.
• You are we ll advised not to keep va luables inside an unattended
vehic le, visible or not. Even a properly locked vehicle cannot provide
the security of a safe! •
Keyless entry remote control
General description
The remote controls allows you to:
• lock or un lock the vehicle
• selective ly un lock the rear lid.
The turn signals wi ll flash briefly whenever you lock or unlock the
vehic le . Also, the interior light will come on or go off whenever you
open or c lose the driver's door.
The transmitter and battery are located in the head of the remote
control. The receiver is located inside the vehicle. The maximum
effective range depends on severa l things. Remember, if the battery
is weak, the effective range decreases .
The remote -control key contains a fo ld-ou t key that you can use to
manual ly lock or unlock the vehicle and to start the engine .
Controls and eq uip­
ment
Op enin g and clo sing
If you need to replace the remote control, or if you need to have it
repaired, you must see your authorized Audi dealer. Only then can
you use the key again. •
Unlocking and locking the vehicle with the
remote control
How the remote control works.
To unlock the v ehicle m
- Press button @.
Fig. 40 Remo te
co ntr ol: fu nctio n
b utt ons
- Press button @two times within two seconds to unlock
all doors and the rear lid .
To lock the vehicle [II
-Press bu tton @ => &, in "Gener al descri ption" on
page 50.
- Watch that all turn signal lights flash once.
To unlo ck r ear lid only ,c::;
- Press button @for approx imate ly one second.
~ehicle care Technical data

Opening and closing
& WARNING
• Be careful when closing the window s. Check to see that no one
is in the way, or serious injury could result !
• Always read and heed WARNING~
& in "General des cript ion "
on
page 50. •
Locking and unlocking the vehicle from inside
T he vehicle can be l oc ke d or unlocked from the insid e
usin g th e pow er lock in g switches lo ca te d in t he driver's
a nd the f ront pas senger d oor.
t----~~~....,.~--,.,:,,....,...,..,.~..,...,. ..... ...,..,.._,......,...,......., ij
i
Fig . 4 3 Driv er's door:
po wer lo cking sw it c h
How to lock all doors and the rear lid
simultaneously
Press l ower part o f the po wer loc kin g s witch
IJt,,=
=> fig . 43 => & .
How to unlock all doors and the rear lid
simultaneously
- Press the uppe r part o f the switch
How to unlock each door separately using the
door handle
- Pull the handle to o pen th e do or.
If you loc k the vehicle us ing the power lo cking switch c»= , please
no te the foll owi ng:
• You cannot open the doors or the rear lid from the
outside
!increased security, for example when you are stopped at a red
li g ht).
• The diode i n the powe r loc king switch ill uminate whe n all the
doors and the rear lid are c losed and loc ke d .
• You ca n unl ock and o pe n t he d oors from the in side by pull ing o n
t h e door ha ndle.
• I f th e driver's door is opened (a fter you have locke d the ve hicle
from the inside using the power locking switch), the door will
rema in unlocke d to prevent you from locki ng y ourse lf out o f yo ur
veh ic le. Aft er you c lose t he door, you have to lock the d river 's doo r
agai n.
• I f you have an accident and the airbag is activated, the doors
u nl ock au tomaticall y.
& WARNING
• If you use the power locking switch with the doors closed ,
remember that all the vehicle doors will lock .
• Locking doors from the inside can help prevent inadvertent
door opening during an accident and can also prevent unwanted
entry from the out side . Locked doors can, however , delay a ssis­
tance to vehicle occupant s and hold up rescue efforts from the
outside in an accident or other emergency.
[ i ] Tips
Be awa re t hat t he rear lid can be op ened from insi de th e vehic le with
the remote rear lid release located in the driver's door. Before you _,.

Power top
Normal operation
General information
The power top is designed for quick and easy operation. The power
top opens and closes automatically by itself . When the top is folded
dow n, it is stored in a special compartment and hidden under a
cover.
The power top is both wind -and waterproof under normal oper ­
ating conditions . Only under extreme weather conditions, for
examp le, a violent burst of rain or torrentia l rainfall, can a few drops
of water possibly form inside the roof. This is normal and no cause
for concern.
To maintain the appearance of the power roof and to keep it water ­
proof , read the information on roof care in=> page
233, "Power top
care". In addition to this, please note the following:
• Always open or close the power roof on ly when it is clean . Other­
wise particles of dirt can scratch the rear window when the power
top fo lds down . The particles can chafe a nd damage the fabric over
a period of time. It is a lso important to remove ice and snow before
opening the power roof.
• Do not use a sharp object or any other tools, which cou ld scratch
t he fabr ic when removing ice or snow. A normal ice scraper can be
used to remove ice from the rear window.
• The power roof should be opened only when it is completely dry .
I f you open and store the power roof when it is wet, unsight ly marks
or mildew can form if left for long per iods of time .
• Never leave the roof open for severa l weeks at a time. You should
close it occasiona lly to prevent discoloration in the folds of the
fabric and to allow the creases to smooth out. This is especially
impor tan t if t he top has once been s tored away when it was not
completely dry .
Controls and equip ­
ment
P ow er top
• Do not open the power when it is colder than 32 °F (0 °C). At
these temperatures, the fabric is less flexible.
L1}. WARNING
• For safety reasons never open or close the power top when the
v ehi cle is moving .
• Never drive the vehicle without the power top securely locked
in the closed po sition . If it i s not firml y en gaged , the top can be
blown open by the airstream and cau se in jur ies and damage to the
vehi cle . - Risk of cr ash!
• When opening and closing the power top m ake sure to keep
yo urself and other s clear of all moving pa rt s. Risk of injury!
• During opera tion of the power top the head clearance in the
re ar of the vehi cle is r edu ced . Alw ay s m ake sure that rea r seat
p assen gers keep clear of the power top a s it is being opened or
cl osed . Ri sk of injury!
[ i ] Tip s
• The power top can only be operated w ith the ignition switched
on.
• To avoid unnecessary strain on the battery, you should not open
and c lose the top several times in a row when the e ngine is n ot
running.
• The display in the ins trument cluster will indicate if a pr otective
feature of the power top has been activated or if a malfunction
occurs ~ page
64.
• In case of a ma lfunction the power top can be operated manu­
a lly. This is intended for a limited time only~ page
68, "Opera te the
power top manually" . T he cause of the malfunction should be
tracked down and repaired by an au tho rized Aud i deale r as soon as
possible . _.,

Power top: ca nnot b e use d
Power top not operating
This message wi ll appear in the display if the power top has been
deactivated for safety reasons or if there is a malfunction. Possible
causes are:
• vehicle speed t oo high: the power top operation is deactivated
for safety reasons if the vehic le is mov ing at a speed above 3 mph
(5 km/hi.
• battery voltage too low: the power top wil l not operate if the
battery voltage is too low . This is a precautionary feature to make
s u re that the re is always enough battery power avai lable to start the
engine. The power top can be activated again once the engine has
been started and is running.
• ove rload cut -off: if the power top is operated repeatedly the
hydraulic actuator components will be severely stressed . In this
case the over load cut -off will safeguard the system against damage.
This safeguard deactiva tes the system fo r abou t 15 to 30 minutes.
After this time the power top can be operated again as usual=> & .
• Malfunction: One possible cause of a malfunction is the fai lure
of a system component. In this case the power top can a lso be
manual ly operated =>
page 68. Turning off the ignition during the
opening or closing process may cause a malfunction. You can
correct this yourself=>
page 65.
Pow er top no t sec ure
Power top not locked in place
If the top has not opened or closed completely and the vehicle
moves then at a speed above 3 mph (5 km/h), this
warning will
appear in the instrument cluster display. Stop the vehicle. Open or
close the power top completely. The warning should disappear .
& WARNING
Never drive the car with a power top that is not securely lock ed in
place . If it i s not fir mly engaged , the top can b e blown ope n by the
Contro ls and eq uip­
ment
P o w er top
& W ARN ING (conti nued )
airstre am and ca u se injur ies and damage to the vehicle . - Risk of
crash !•
Correcting a malfunction
Turning off the ignition durin g the opening or closing
process may cause a malfunction.
F ig. 57 Power top
cov er in end p osition
App ly the hand b rake.
Sw it c h t he igniti on off .
Fold the powe r top cove r upward un til it engages.
Stow the power top in the powe r top compa rtment.
T ur n on the igni tion.
Press or pull the swi tch f or p ow er top operatio n
~ page 62, fig . 52 un til the powe r top is f ully clos ed o r
open .a
~ehicle care Technical data

Pow er to p
R emovin g
- Make sure the single piece section is folded up and
engaged in the vertical position as illustrated=> page
67,
fig. 62.
- Push the arresting pin on each side inward until the arresting button (darker green in => page
67, fig. 62) pops
up.
- Slightly slide the horizontal deflector sect ion forwa rd to
clea r the upholstery and then lift t he deflector out of the
veh icle.
- Turn the deflector so t hat its split sect ion points up verti­
cally as shown
G) => page 67, fig. 63
Folding
- Fo ld the reta iner pegs fl ush ag ainst the frame, small
arrows
(D => page 67, fig . 63 .
- Grab the split section at the top on both sides of the joint
and pull it apart in the direct io n of the bold arrows @.
- Fo ld the split halves down until they meet at the bottom.
- Fold the split halv es fo rward in the directi on of bol d
arrows @.•
Operate the power top manually
General notes
The po wer top can be closed manually in the event of a
malfunction.
- App ly the handbrake. - Lower the wi
ndows.
Remove the igni tion key.
You should operate the power top manually only if automatic oper­
ation does not wo rk. It is best to contact an Aud i dealer to identify
the cause of the ma lfunction .
Follow this procedure step by step to close the power top manua lly:
• Relea se a nd open the storage bay cover: you must use the
manual release key to unlock the storage bay cover . Unlock the
cover and swing i t ope n.
• Lift th e power top out and unfold it : lift the top out of the storage
bay by hand and extend it forward to the windshield.
• Lock the power top in pla ce: you must use the manual release
key to proper ly engage and lock the power top to the windshie ld.
& WARNING
• Ta ke care not to r ea ch in side the link age me ch an is m or a ny
moving p arts when you lift out and unfold the power top . Carel ess
h andling ri sk s injurie s to your hand s and finger s!
• Nev er driv e the car w it h a power top that is not securely locked
i n pl ace.
If it is not firmly engaged , th e top c an be blo wn ope n by
the air stream and c ause injurie s and damag e to the veh icle . - R isk
of cr ash!
0 Not e
The trunk lid must be closed be fore opening the storage bay cover
as otherwise the two panels can collide . T his can cause consider ­
able damage to the surfaces on both parts.
[ i ] Tips
It is advisable to have a second person assist you wi th closing the
power top. Particularly the part of folding up and extending the top
~

Clear vision
Applies to vehi cles : equip ped wit h Ligh t se nso r pa ckag e
Coming home /leaving home function gr!}
The coming home/leaving home function switches on the
external lights on a vehicle parked in the dark to illumi ­
nate the surroundings.
Activating the function
Fig . 91 Dashboard
detail: coming
home/leaving home
switch beside light
switch
- Briefly press the knob g{!} => fig. 91 (colored dot) so it will
stand out from the panel.
Turn the knob to position
1.
Push the knob back in to secure its setting.
Deactivating the function
- Briefly press the knob g{!} => fig. 91 so it will stand out
from the panel.
- Turn the knob to position
0.
Push the knob back in to secure its setting.
The coming home/leaving home function is controlled by light
sensors located in the inside mirror housing and stem. The system
is activated if all of the conditions below are fulfilled: •
the knob
lJ has been turned to position 1
• the driving lights and the ignition have been switched off
• the vehicle is parked in poor light or darkness with the sensors
detecting little or no light at all.
Coming home situation
In darkness , the activated system will turn on the front fog lights, tail
lights, and rear licence plate light as soon as the driver's door is
opened from inside.
As long as one of the doors or the rear lid remains open, the set of
external lights will keep burning for about two minutes maximum.
To provide ligh t for departure, the set of vehicle lights will keep
burning for about another 30 seconds after all doors and the rear lid
have been closed.
The factory -set time of 30 seconds until the lights are switched off
can be adjusted if you prefer a longer or shorter duration. Have the
adjustment done by your Audi dealer or a qualified workshop . The
system can be adjusted to keep the lights burning for a maximum
of 60 seconds.
Leaving home situation
As soon as the vehicle is unlocked by pressing the@ button on your
remote control, the set of external lights is switched on .
The external lights are switched off as soon as the driver's door is opened from outside. Even if you had the system readjusted to keep
the lights burning for an extended time for coming home, the
external lights will be turned off if you do not open the driver's door
within 60 seconds after unlocking see chapter "Opening and Closing" in your Owner's Manual. If the lights are switched off
before you reach the driver's door, press them button once more to
turn them on again. .,_