ignition AUDI A5 CABRIOLET 2010 Service Manual

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. •

ffl..__O_ n_ t_h _e_ r_o _ a_ d _________________________________________________ _
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 .,

On the road -
----------------
more detail. If the driver message Parking brake! appears, there is an
operat ing malfunction in the parking brake which you should have
repaired immediately by an authorized Audi dealer or other qualified
workshop ~
page 28.
[I] Tips
• You can apply the parking brake at any time -even with the igni­
tion turned off. The ig nition must be turned on in order to release the
parking brake.
• Occasional noises when the parking brake is applied and released
are normal and are not a cause for concern.
• When the vehicle is parked, the parking brake goes through a self­
test cycle at regular intervals . Any associated noises are normal. •
Parking
Various rules apply to prevent the parked vehicle from
rolling away accidentally.
Parking
-Stop the vehicle with the foot brake.
- Pull the switch to apply t he parking brake.
- Move the selector lever to P.
- Turn the engine off::::>&.
In addition on inclines and grades
-Turn the steering wheel so that your vehicle will ro ll
against the curb in case it should start to move.
_& WARNING
• When you leave your vehicle -even if only briefly· always
remove the ignition key. This applies particularly when children
Controls and equip ­
ment Safety first
& WARNING
(continued )
remain in the vehicle. Otherwise the children could start the
engine, release the parking brake or operate electrical equipment
(e.g. power windows). There is the risk of an accident.
• When the vehicle is locked, no one -particularly not children
should remain in the vehicle. Locked doors make it more difficult
for emergency workers to get into the vehicle -putting lives at
risk. •
Starting from rest
The starting assist function ensures that the parking
brake is released automatically upon starting.
Stopping and applying parking brake
-Pull the switch to apply the parking brake.
Starting and automatically releasing the
parking brake
- When you start to drive as usual, the parking brake is auto -
matically released and your vehicle begins to move.
Whe n stopping at a tra ffic signal or stopping in city traffic on ve hicles
with an automatic transmission, the parking brake can be applied.
Th e vehicle does not have to be held with the footbrake. The parking
brake eliminates the tendency to creep with a drive range engaged.
As soon as you drive off as usual, the parking brake is released auto­
matically and the vehicle starts to move.
Starting on slopes
When starting on inclines, the starting assist prevents the vehicle
from unintentionally rolling back. The braking force of the parking
brake is not released until sufficient driving force has been built up at
the whee ls. ..,
Vehicle care Technical data

1111....__0_ n_ t_h_ e_ r_ o_ a _ d _________________________________________________ _
& WARNING (continued)
• Please note that unconsciously "resting" your foot on the
accelerator pedal cau ses cruise control not to brake. This is due to
the control system being overridden by the drive r's acceleration.
[ i J Tips
The brake lights illuminate as soon as the brakes apply
automatically. •
Applies to veh icles: with c ruise contro l
Changing speed
-Press the lever in the direction of the 0 => page 113,
fig. 111 or in the direction of the Qto increase or
decrease your speed.
- Let go of the lever to save that speed.
Change speed in increments of 1 mph (1 km/h) by lightly pressing the
lever. If you keep the lever p ressed down, you will alter your speed in
5 mph (10 km/h) increments .
You can also press the accelerator peda l down to increase your speed,
e .g . if you want to pass someone . The speed you saved earlier w ill
resume as soon as you let off of the accelerator pedal.
If, however, you exceed your saved speed by 5 mph (10 km/h) for
longer than 5 minutes, the cruise control will be turned off tempo ­
ra rily. The green symbol in the display turns white, the saved speed is
retained .•
A pp lies to veh ic les : wi th cru ise contro l
Pre-selecting speed
You can pre-select your desired speed while the vehicle is
not moving.
- Turn on the ign ition.
- Pull lever into position 1 =>
page 113, fig. 111.
- Press the lever in the
0 or Q direction to increase or
decrease your speed.
- Let go of the lever to save that speed.
This function makes it possible, for example, to save the speed you
want before dr iv in g on the highway. Once on the highway, activate
the cruise contro l by pulling the lever toward
(D. •
App lies to veh icles : w ith c ruise contro l
Switching off
Temporary deactivation
-Step on the brake pedal, or
- Press the lever into position @ (not clicked into place)
=>
page 113, fig . 111, or
- Drive for longer than S minutes at more than S mph
(10 km/h) above the stored speed.
Switching off completely
-Press lever into position @ (clic ked into p lace), or
- Switch the ignition off.

On the road Ill
----------------
The speed you saved will be retained if the cruise control has bee n
switc hed o ff tempo rar ily . To resume the saved speed , let up on the
bra ke or cl utch pedal and pull the leve r to position
(D .
The saved speed w ill be erased after turning the ignition off.
& WARNING
You s hould only resume the saved speed if it is not too high for
existing traffic conditions. Otherwis e you r isk an accident. •
Controls and equip ­
ment Safety first
Vehicle care Technical data

____________________________________________ A_ d_ a.._p _t_ i_ v _e_ c_r_u _ i_ s _e_ c_o_ n_ t_r _o _l __ ffl'II
& WARNING (co ntinued )
• Always turn off adaptive crui se control when entering turn
lanes, highway ex it lanes and con struction zones or similar situa­
tions because the vehicle will automatically accele rate to the
stored speed .
• Never rest your foot on the accelerator pedal, especially when
the adaptive cruise control is being u sed because doing so will
override the braking function and prevent the brakes from being
applied by the system when it detect s a situation when the brake s
must be applied.
• Alway s remember that the adaptive cruise control has limits -
it does not react when you drive towards an obstacle or something
else on or near the road that is not moving, such as vehicles
stopped in a traffic jam , a stalled or disabled vehicle .
• Always remember that the adaptive cruise control cannot
detect a veh icle th at i s driving towards you in your traffic lane and
that it cannot detect narrow vehicles such as motorcycles and bicy­
cles .
[ i] Tips
• For safety reasons, the stored speed is deleted when the ignition
is turned off.
• The Electronic Stabilization Program (ESP) and the Ant i-Slip Regu ­
la tio n (A SR) c anno t be de activated when the adaptive cruise cont rol
is sw itched on .
If the ESP and the Anti -S lip Regulation (ASR) has been
de activ at ed an d yo u the n switch on the ad apt ive cruise cont rol, the
ESP fu nction w ill also be activated automatically.
• Dam age cau sed by accide nts (e.g. if the vehicle is dam age d whe n
park ing) can affect the rada r sensor settings. This can cause t he
sys tem to malfunc tion or switch off comple tely.
• The radar sensor cover is heated. In w inter conditions, you should
st ill ch eck befor e dr iv in g to make s ure i t is free of ice and s now. If
necessary, clean the area nea r the rada r sensor carefully=>
page 116,
fig. 113 .
Controls and equip ­
ment Safety first
•
To ensure that the radar sensor is not blocked , fore ign objects
(e .g. st ickers, add -on par ts) m ust no t cover the are a ne ar th e radar
sensor=>
page 116, fig . 113 . The area near t he radar sensor must not
be painted, either .
• For Declaration of Compliance to United States FCC and Industry
C an ada regula tions =>
page 34 6. •
App lies to ve hicle s: with adap tiv e crui se contro l
How does adaptive cruise control work?
Vehicles traveling ahead are de tec ted w ith the aid of a
ra dar sens or.
I;= =;. =============== --~
~
l8
Fig. 114 Radar sen sor
mea sureme nt r an ge
A radar sensor is buil t into the front of the vehicle=> fig. 114, which
is subject to ce rtain system limits =>
page 12 7 . Stationary o bjects are
not taken into cons iderat ion. The system is intended to measure the
distance to reflective s urfaces. The system responds after the
dis tance measuremen t has taken place. If a meas urement is not
poss ible, the system does not respond.
Open road
When the road is clear, the adaptive c ruise contro l works like cr uise
cont rol. It ma inta ins a constant target speed specified by the drive r.
~
Vehicle care Technical data