engine AUDI A5 CABRIOLET 2010 Owner's Guide

Deluxe automatic climate control
plus
A pplie s to v ehicl es: w ith d elu xe auto matic climate control p lu s
Description
The air conditioner is fully automatic and is designed to
maintain a comfortable and uniform climate inside the
vehicle.
We recommend the following settings:
- Set the temperature to 75
°F (+23 °C).
- Press the [AUTO] button .
With this setting, you attain maximum comfort in the least amount
of time. Change this setting, as desired, to meet your personal needs.
The climate controls are a combination of heating, ventilation and
cooling systems, which automatically reduce humidity and cool the
air inside your vehicle.
The climate control automatically maintains a temperature once it has been set. The temperature of the air from the vents, fan speed
(air volume) and air distribution are also automatically adjusted . The
system also takes into account strong sunshine so that manual
adjustment is not necessary . So in almost all cases ,
automatic mode
offers the best conditions for the comfort of the occupants at all
times of the year:::::,
page 97.
Please note the following:
Turn on the air conditioner to reduce humidity in the vehicle. This also
prevents the windows from fogging up.
When the outside temperature is high and the air is very humid,
condensation from the evaporator may drip under the vehicle . This is
normal and does not indicate a leak.
Controls and equip ­
ment Safety first
Warm and cold
If the outside temperature is
low, the fan normally only switches to a
higher speed once the engine coolant has warmed up sufficiently .
The air conditioner temporarily switches off when you drive off from
a standstill using full throttle to save engine power.
The compressor also switches off if the coolant temperature is too
high, so that t he engine can be adequately cooled under ex treme
loads.
Pollutant filter
The pollutant filter (particle filter) ensures that impurities in the
outside air (e.g. dust, pollen) and odors are significantly reduced or
stopped . The air is also filtered in recirculation mode.
The pollutant filter element must be changed at the intervals speci­
fied in the service plan so that the performance of the automatic
climate control system is not impaired .
If the effectiveness of the filter decreases prematurely due to opera­
tion of the vehicle in areas with significant pollution, the filter
element must be changed between the specified service dates.
Key recognition
The current climate control settings are automatically stored and
assigned to the key being used. The settings assigned to the key are
restored automatically when the vehicle is started. These settings are
different when the power top is open or closed. Each driver can use
his or her preferred settings without having to manually adjust them
when using their own key.
If another driver changes the settings while using your key, your
preferred settings will be erased.
Energy management
To prevent the battery from being discharged and to restore the
balance of energy, components which require large amounts of
energy are temporarily cut back or switched off=>
page 247. Heating
systems in particular require a great deal of energy .
If you notice, for
example, that the rear window heater is not heating, then it has been
temporarily cut back or switched off by
energy management. These .,_
Vehicle care Technical data

llffl!IL-_W.:..:...:: a:.:.r..:. m.:..:...:: a:.:.n..:. d.:::.... c.:. o .:...: l..:.d ;__ ______________________________________________ _
- Press the [@I button again, or press th e [AUT O I button to
tur n it off .
Temperatu re is cont rolled a utomat ic a lly. The max imum amount of
air f lows ma inly from the vents below the windsh ie ld.
Pressing the
I@ ] button switches off reci rculation mode. •
Applies to vehicles: w ith deluxe automatic climate control plus
Rear window defogger [GiP ]
The rear win dow defogger clears the rear window of
condensation.
- Press th e [llW] button to turn t he rea r window defogger on
and off.
Th e re ar window defogge r wo rks only w hen the engine is running. The
indicator light in the button i llum inates when the rear window
defogger is on.
T he rear w indow defogger is sw itched off automatically after 10 to
20 min utes, depending o n the outsi de temperature .
T he rear win dow defogger can be tu rned on permanen tly by pressing
the
ICiW] button for more than two seconds. This rema ins stored until
t he igni tion is sw itched off. A re ar window defogger that was
switched on also remains stored for 15 minutes after the ignition is
switched off.
If the e ng ine is restarted within these 15 minutes, the rear window
defogger is activated for 10 to 20 minutes, depending on outside
t emperature. When a vehicle is par ked fo r a short time, the rear
window defogger does not need to be man ua lly activated again.
W For the sake of the environment
As soon as t he rear w indow is clear, yo u should switch the rear
window defogger off. The reduced power cons umption has a benefi­
c ial effect on fue l co nsu mption. •
Applies to veh icles: with deluxe automatic cl ima te cont rol plus
AC mode [AC]
Turning AC off
- Press t he !AC ] button.
Turning AC on
-Press th e !AC] butto n aga in .
T he coo ling system is tu rned on in AC mode. The heating and ve ntil a ­
tion system is contro lled automatically.
[ i ] Tips
If the LED in the switch does not illum inate after AC mode has been
t urne d on (= tu rning the AC o ff), there is a fau lt in an a ir -condit ioning
component. Please consult a authorized dealership if there is an
operat ing p roblem. •

1111....__w __ a _r_ m __ a_n_ d_ c_ o _ l_d _______________________________________________ _
Applies to veh icles : wi th d eluxe automat ic clim ate cont rol pl us
Economical use of the climate control
system
Economical use of the climate control system helps save
fuel.
When the climate control system is working in cooling mode,
engine performance is reduced and fuel consumption is
affected. To keep the time the climate control system is on as
short as possible, you should do the following:
- To save fuel, turn off cooling mode by pressing the AC
button (indicator light goes out).
- In addition, if you open the window while driving, turn off
cooling mode by pressing the AC button (indicator light
goes out).
- If the vehicle is extremely hot due to the heat of the sun,
briefly open doors and windows.
~ For the sake of the environment
When you save fuel, you reduce emissions from the vehicle. •
Applies to vehicles: with deluxe automatic climate cont rol plus
Deluxe automatic climate control plus -
basic settings
The basic climate control settings can be adjusted in the
radio or MM!*.
-Select: Function button (CAR]> Climate control switch.
Automatic recirculation
An air quality sensor detects increased concentrations of pollutants
in the outside air and automatically switches to recirculation mode. We recommend that you always keep automatic
recirculation ON to
prevent polluted outside air from entering the vehicle interior.
If the
air quality sensor located in the climate control system detects
polluted outside air, the sensor decides whether the air pollution can
be reduced by the factory-installed pollutant filter or whether it is
necessary to switch to recirculation. With heavy concentrations of
pollutants, the climate control system is switched automatically to
recirculation mode and the supply of outside air is blocked. As soon
as the concentration of pollutants in the outside air drops, fresh air is
supplied to the vehicle interior again.
In the event that the windows fog up during automatic recirculation,
press the
l@I button immediately.
Under certain operating conditions, automatic recirculation is
switched off automatically. When outside temperatures are below
about 50
°F ( + 10 °(), automatic recirculation is limited to
30 seconds. When outside temperatures are below about 30
°F (-
1 °C), automatic recirculation is limited to 15 seconds .
Synchronization
After Synchronization is set to on, all of the subsequent climate
control settings (except for seat heating*) for the driver are trans­
ferred to the front passenger .
Synchronization is canceled when settings are adjusted on the front
passenger's side .•

ffl Warm and cold .._ ____ .....;_____,;,;_ _______________________________ _
Applie s to veh icles : wi th upp er cabi n heat in g
Upper cabin heating
The upper cabin area of the front seats can be heated at
three levels when the engine is running .
Fig. 105 Driver's seat:
vent for upper cabin
heating
Fig . 106 Driver's seat:
upper cabin heating
button
- Press the [~l button to switch the upper cabin heating on.
The LED illuminates.
- Press the
[ switch the upper cabin heating off.
& WARNING
The output from the upper cabin heating system may be very hot
temporarily if the air vents in the seats
~ fig. 105 are covered by
clothing or other objects when the system is switched on. This can
cause burns on unprotected skin exposed directly to the vents.
[ i ] Tips
• Upper cabin heating a lways switches on at the highest level. You
can reduce the heat output with the
[cg;) button and increase it with
the[~] button as needed.
• Energy management ~
page 247 may reduce the heat output if
the battery voltage is too low.•

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Ignition Lock and ignition switch
Starting engine with the key
The ignition is switched on and the engine started with
the ignition key.
F ig. 10 8 Igniti on k ey
-Inse rt the key in to the ig n ition lock.
- Step on th e brake pedal and mov e th e selec tor lev er to th e
P or N posi tion.
- Press the key=> fig. 108 -the engine wi ll start.
By pressing the key without stepp ing on the clutch or the b rake, the
ign itio n is switc hed on and o ff . With the ignition on, the steeri ng
w heel is unlocked.
You can o nly remove the key with the ig nition switc hed off . To do this,
you have to press on the key ag ain. Wi th an a utomat ic transm iss io n,
the selector lever must be in the P pos ition.
W hen s tarting the engine, major electrica l loads a re swi tched off
temporarily .
After startin g a cold engine, there may be a brief period of increased
noise be cause the oil p ress ure mu st firs t b uild up in t he hydr auli c
valve adjuste rs. This is normal and not a cause for concern. If
the eng ine s hould not start immediately, the starting process is
a u tom atically st op ped aft er a sh ort t ime. Re peat sta rtin g p ro cedu re.
Driver message in the instrument cluster display
Press brake pedal to start engine
T h is message ap pears i f yo u do not step on the brake pedal to start
t he engine on a vehicle w ith an au toma tic transmission.
Engage N or P to start engine
This message appea rs when at tempti ng to start the eng ine if the
sele ctor lever fo r the au tomatic t ransm ission is no t in the P or N po si·
t ion. The engine can on ly be sta rted wi th the selecto r in these posi­
tions.
Shift to P , otherwise vehicle can roll away. Doors do not lock if lever
is not in P .
This message app ears fo r sa fe ty reasons along with a wa rning sig nal.
It appea rs if the selector lever for t he automat ic transm iss io n is not
in the P posi tion af ter the ignition is sw itched off . M ov e t he se lector
lever to the P pos itio n, ot herw ise the vehicle is not secured against
rolling away . You a lso ca nnot lo ck th e ve hi cle u sing the locking
button on the door hand le or us ing the remote key.
& WARNING
• Always take the key with you whenever you leave your vehicle.
Otherwise, the engine could be started or electrical equipment
such a s the power windows could be operated . This can lead to
serious in jury.
• Never leave children or per sons requiring assistan ce unat­
tended in the vehicle. The doors can be locked u sing the remote
transmitter, p reventing people from escaping from the vehicle on
their own in the event of an emergency. Depending on the time of
year, people inside the vehicle can be exposed to very high or very low temperatures. ..,

_________________________________________________ O_ n_t_ h _ e_ ro_ a_d __ ffl'II
& WARNING (co ntinued )
• Never remo ve the ignition key from the ignition look while the
vehicle is moving. Otherwi se, the steering lock could suddenly
engage and you would not be able to steer the vehicle.
0 Note
• In the event of a malfunction in the electronic ignit ion lock a
symbo l in th e instr umen t cluster flashes with the message
Ignition
lock defective .
• Avoid h igh eng ine speeds, fast acce lerat ion or heavy eng ine loads
whi le the engine is still co ld. This cou ld damage the engine .
<£> For the sake of the environment
To avoid unnecessary engine wear and to reduce exhaust emiss ions,
do not let your vehicle s tand and w arm up. Be re ady to dr ive off i mme­
diately after starting your ve hicle. Mai ntain mode rate speed until the
eng ine is complete ly w arm . R emembe r, the eng ine per forms best at
operat ing temperature.
[I) Tips
• If the key ca nnot be removed from the ignition lock , yo u have to
pull the mec hanica l key o ut o f the maste r key in o rde r to be able to
lock the ve hicle Th e veh icle can be locked with the mec han ical key
=> page 39.
• If you open the driver's door with the ig nit io n switched on, a
buzze r soun ds and the message
Ignition is on appea rs in the instru ­
ment cl uster d is p lay . Switch t he ig nitio n off .•
Stopping the engine
- Bring the vehic le to a fu ll s top.
Controls and equip ­
ment Safety first
M
ove the select or lever to the P or N po sit ion .
- Press on t he igni tion key. The engi ne is tu rned of f.
Emergency off
If it is necessary in unusual circ umstances, the engine can be
switched off while the vehicle is mov ing . The eng ine will be switched
off if you press on the key for an extended period.
& WARNING
• Never turn off the engine until the vehicle has come to a
complete stop .
• The brake booster and servotronic only work when the engine
is running . With the ignition turned off, you ha ve to apply more
force when steering or braking. Since you cannot steer and stop
normally, this can lead to accident s and serious injuries.
• The radiator fan can continue to run for up to 10 minute s even
after you have turned of f the engine and removed the ignition key.
The radiator fan can also turn on a gain if the engine coolant heats
up becau se of intense sunlight or heat build-up in the engine
compartment.
0 Note
Do not stop the engine immediately after har d or extended dr iving.
Keep the eng ine runni ng fo r approx imately two m in utes to p revent
excessive heat b uild -up. •
Vehicle care Technical data

ffl..__O_ n_ t_h _ e_ r_ o_ a_ d _________________________________________________ _
Starting and stopping the engine
with convenience key
A pplies to veh ic le s: w ith conven ience ke y
Starting the engine with the
[START ENGINE S TOP] button
This button switches on the ignition and starts the
engine.
Fig. 109 Convenience
key: START ENGINE
STOP button
-Step on the brake pedal and move the selector lever to P
orN =>& .
- Press onthe[START ENGINE STOP)button::::>fig. 109-
the engine will start .
By pressing the [START ENGINE STOP] button without depressing
the clutch or the brake peal, the ignition is switched on and sw itched
off by pressing it again .
If the engine does not start immediately, stop trying after 10 seconds
and then try to restart the engine about 30 seconds later.
After a co ld engine is started, there may be a brief period of increased
noise because oil pressure must first build up in the hydraulic valve
adjusters. This is normal and not a cause for concern.
Driver message in the instrument cluster display
No key identified
This message appears when the !START ENGINE STOP] button is
pressed if there is no master key ins ide the veh icle or if the system
does not recognize it. For example, the master key cannot be recog­
nized if it is covered by an object (e.g. aluminum brief case) which
screens the radio signal. Electronic devices such as cell phones can
also interfere with the radio signal.
Press brake pedal to start engine
This message appears if you press the !STAR T ENGINE STOP)
button to start the engine and do not depress the brake pedal. The
eng ine can only be started if the brake peda l is depressed.
Engage N or P to start engine
This message appears when attempting to start the engine if the
selector lever for the automatic transmission is not in the P or N posi­
tion. The engine can on ly be started with the selector in these posi­
tions.
Key not in vehicle
This message appears along with the.:! symbol if the master key is
removed from the vehicle with the engine running. It is intended to
remind you (e.g. when changing drivers) not to continue the journey
without the master key .
If the master key is no longer in the vehicle, you cannot switch on the
ignition after stopping the engine and you also cannot start the
eng ine again. Moreover, you cannot lock the vehicle from the outside
w ith the key.
Shift to P, otherwise vehicle can roll away. Doors do not lock if lever
is not in P .
This message appears for safety reasons along with a wa rning signal.
It appears if the selector lever for the automatic transmission is not
in the P position when switching off the ignition with the
!START ENGINE STOP] button. Move the selector lever to the P _..

___________________________________________________ O_ n_ t_h _e_ r_o _a_ d __ _
position, otherwise the vehicle is not secured aga inst rolling away.
Y ou also ca n not lock t he vehi cle using th e locking button on the door
hand le or us ing the remote key .
Convenience key defe ctive ! Use ignition lock
T hi s message appears if t he veh icle has to be sta rted not w ith the
! STAR T EN GINE STO PJ bu tton bu t with the ig nition key.
& WARNING
• Never allow the engine to run in confined spaces -danger of
asphyxiation.
• Never turn off the engine until the vehicle has come to a
complete stop.
• The brake booster and servotronic only work when the engine
is running . With the ignition turned off , you have to apply more
force when steering or braking. Since you cannot steer and stop normally, this can lead to accidents and serious injuries.
0 Note
• Avoid high engine rpm, full throttle and heavy engine loa ds until
t he e ngi ne h as r eache d op erat ing temperat ure -oth erwi se you ri sk
eng ine damage.
• Th e en gine ca nnot be sta rted by p us hi ng or tow ing t he veh icle.
• If the eng ine has bee n un der h eavy load for a n ex tended per iod,
heat b uilds up i n the engin e compartmen t after the engine is
switched off- there is a risk o f damag ing the engine. Allow the engine
t o r un at idle for abou t 2 min utes before sw itc hing it off.
[I) Tips
If y ou open t he dr iver 's door wi th th e ig nit io n sw itche d on, a bu zzer
so unds and the message
Ignition is on appears in the instrument
clu ster displa y. Swi tch t he ig nition o ff.•
Controls and equip ­
ment Safety first
App
lies to vehicles : w ith con venience key
Sw itching engine off with the
[ START ENGINE S TOP] button
- Bring yo ur ve hic le to a co mplete sto p.
- Aut omat ic tra nsmissi on*: Mo ve the select or l eve r to the P
o r N posit ion.
- Press the !ST ART EN GI NE STO P] but to n => page 108,
fig . 109 .
Emergency OFF function
If necessary, the eng ine ca n be switched off with the se lecto r lever in
t he R, Dor S* po sitio ns. To d o so, step o n the b rake pedal and pr ess
and ho ld the
! ST ART ENGINE STOPJ button (vehicle speed must be
les s than 6 mph / 10 km /h.
& WARNING
• Never turn off the engine until the vehicle has come to a
complete stop.
• The brake booster and servotronic only work when the engine
is running . With the ignition turned off , you have to apply more
force when steering or braking. Since you cannot steer and stop normally , this can lead to accidents and serious injuries .
• For safety reasons, you should always park your vehicle with
the selector lever in P . Otherwise, the vehicle could inadvertently
roll away .
• After the engine has been switched off , the radiator fan can
continue to run for up to 10 minutes -even with the ignition
switched off. It can also switch on again after some time if the
coolant temperature rises as the result of a heat buildup or if the
engine is hot and the engine compartment is additionally heated
by the sun's rays.
~
Vehicle care Technical data

ffl..__O_ n_ t_h _e_ r_o _ a_ d _________________________________________________ _
0 Note
If the eng ine has been under heavy load for an extended period, heat
builds up in the engine compartment after the engine is switched off
- there is a risk of damaging the engine. Allow the engine to run at idle
for about 2 minutes before switching it off. •
Electromechanical parking brake
Operation
The electromechanical parking brake replaces the hand
brake.
Fig. 110 Center
consol e: Par king brake
-Pull on the switch @~ fig. 110 to apply the parking
brake . The indicator light in the switch illuminates.
- Step on the brake pedal or the accelerator pedal and press
the switch at the same time to release the parking brake.
The indicator light in the switch goes out.
Your vehicle is equipped with an electromechanical parking brake.
The parking brake is designed to prevent the vehicle from rolling
unintentiona lly and replaces the hand brake. In addition to the normal functions of a traditional hand brake, the
electromecha
nical parking brake provides various convenience and
safety functions.
When starting from rest
• The integral starting assist helps you when driving by automati­
cally releas ing the parking brake=>
page 111, "Starting from rest".
• When starting on inclines, the starting assist prevents the vehicle
from unintentionally ro ll ing back. The braking fo rce of the parking
brake is not released until sufficient driving force has been built up at
the whee ls.
Emergency brake function
An emergency brake ensures that the vehicle can be slowed down
even if the
normal brakes fail=> page 112, "Emergency braking" .
Indicator lights
• If the parking brake is closed with the ignition switched on the
ind icator lights come on:::, (USA models)/ ®) (Canada models) in the
instrument cluster and the switch.
• If the park ing brake is closed with the ign it ion
switched off the
indicator lights come on
::'l'n (USA models) I © (Canada models) in the
instrument cluster and the switch fo r about 20 seconds.
& WARNING
If a gear or a drive range (automati c transmission ) is engaged
with the vehicle stationary and the engine running , you must in no
instance accelerate or release the clutch carelessly. Otherwise the
vehicle will start to move immediately -risk of an accident.
0 Note
If the symbol ID in the display or the indicator light BRAKE (USA
mode ls)/ ((j)) (Canada models) in the instrument cluster flashes, there
is a malfunct ion in the brake system. By pressing the
! SET] button,
you can bring up a driver message which explains the ma lf u nction in .,