2011 AUDI A5 CABRIOLET ignition

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Have the battery checked when you take your vehicle in for service .
You are well advised to replace a battery that is older than 5 years.
With certain types of a irbag deployment, the battery is disconnected
from the vehicle electrica l system for safety reasons~
& in "Repair,
care and disposal of the airbags" on
page 213.
Disconnecting the battery terminals
Some vehicle funct ions (power window regulators, for example) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the battery termina ls are connected aga in . To
prevent this, the battery should only be disconnected from the
vehicle electr ica l system when absolute ly necessary for repairs.
Vehicles not driven for long periods
If you do not drive your veh icle over a period of several days or weeks,
electrical components are gradually cut back or switched off. This
reduces energy consumption and maintains starting capability ove r a
longer period
~ page 247.
Take into consideration that when you unlock your vehicle, some
convenience functions, such as the master key remote function or
powe r seat adjustment, may not be available. The convenience func ­
tions will be available again when you turn on the ignition and start
the engine.
Winter operation
During the winter months, battery capacity tends to decrease as
temperatures drop. This is because more power is also consumed
while starting, and the headlights, rear window defogger, etc., are
used more often .
Avoid unnecessary power consumption, particu larly in city traffic or
when travel ing only short distances. Let your authorized Audi dealer
check the capacity of the vehicle battery before winter sets in
~ page 293. A well charged battery will not only p revent start ing
problems when the weather is cold, but will also last longer.
Safety first
(I] Tips
If your vehicle is left standing for several weeks at extremely low
temperatures, the vehicle battery shou ld be removed and stored
where it will not freeze. This will prevent it from being damaged and
having to be replaced. •
Working on the battery
Be especially careful when working on or near the
battery.
The battery is located in the luggage compartment under the
floor. Before you check anything in the lu~gage compart­
ment,
read and heed all WARNINGS =:,& .
Always heed the safety warnings, when working on the vehicle
battery or the vehicle electrical system to prevent injury .
The following WARNINGS are very important when
working on the battery:
Always heed the following WARNING SYMBOLS and safety pre ­
cautions when working on the battery.
Always wear eye protection.
Battery acid contains sulfuric acid. Always wear
gloves and eye protection. .,_
Vehicle care Technical data

lfflJL_JC~h~e~c~k~i~n~g~a~n~d:!._!f~il~l:!!in~g L_ ________________________________________ _
No
• sparks
- flames
- smoking .
When a battery is charged, it produces hydrogen
gas which is explosive and could cause personal injury .
Always keep the battery well out of reach of chil- _,.
dren .
& WARNING
Whenever working on the battery or on the electrical system,
there is the risk of injury, accident and even fire. Read and heed
the following WARNINGS:
• Always wear eye protection. Do not let battery acid or any l~ad
particles get on your skin or clothing. Shield your eyes . Explosive
gases can cause blindness or other injury.
• Battery acid contains sulfuric acid. Sulfuric acid can cause
blindness and severe burns.
-Always wear gloves and eye protection. Do not tilt the
battery because acid could leak out of the ventilation open­
ings.
- If you get battery acid in your eyes or on your skin, immedi·
ately rinse with cold water for several minutes and get medical
attention.
- If you should ingest any battery acid, seek medical attention
immediately.
• Do not expose the battery to an open flame, electric sparks or
an open light. • Do not smoke.
• Do not interchange the positive and negative cables.
& WARNING (co ntinued )
• When working on the battery , be sure not to short-circuit the
terminals with tools or other metal objects. This would cause the battery to heat up very quickly, which could lead to damage or
explosion and personal injury.
• When a battery is charged , it produces hydrogen gas which is
explosive and could cause personal injury.
• Always keep the battery well out of the reach of children.
• Before work is done on the electrical system, disconnect the
negative ground cable.
• Before performing any work on the electrical system, switch
off the engine and ignition as well as any electrical equipment.
The negative cable on the battery must be disconnected. If you are
just going to replace a light bulb, then it is enough to switch off
the lights.
• Before disconnecting the battery, switch off the anti-theft
alarm system! Otherwise you will set
off the alarm.
• When disconnecting the battery, first disconnect the negative
cable and then the positive cable.
• Before reconnecting the battery, make sure all electrical
consumers are switched off. Reconnect the positive cable first and
then the negative cable. Never interchange the cables· this could start a fire!
• Never charge a frozen or a thawed-out battery. It could
explode! If a battery has frozen , then it must be replaced. A
discharged battery can freeze over at 32°F (0°C).
• Make sure the vent hose is always attached to the opening on
the side of the battery .
• Never use batteries which are damaged . There is the danger of
an explosion! Always replace a damaged battery. _,.

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& WARNING
California Proposition 65 Warning:
• Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive problems. Wash hands after
handling.
0 Note
• Do not disconnect the vehicle battery when the ignition is
sw itched on or wh en the eng ine is running, otherw ise , you will
damage electronic components in the electrical system.
• If your vehicle is going to stand for a long period of time without
being driven , protect the battery from "freezing" , otherwise it will be
damaged and will then have to be replaced. •
Battery charging
Starting the engine requires a well charged battery.
Fig. 225 Engine
compartment: Connec·
tors for charger and
jumper cables
Always read and heed all WARNINGS below=:> & and =:> &
in "Working on the battery " on
page 291.
- Turn off the ignition and all electrical consumers.
Vehicle OP-eration
-Make sure the area is well ventilated when you charge the
battery.
- Open the engine hood=:>
page 279.
- Remove the cover over the positive terminal in the plenum
chamber.
- Open the red cover on the positive pole=:> fig. 225.
- Connect the charger connectors according to the instruc-
tions to the
jump start bolts. (Bolts under the red cover =
"positive", Bolts with hex head
= "negative").
- Only now plug the mains lead for the charging equipment
into the wall outlet and turn it on =>& .
-Make sure the charging rate is not over 30 amps/14.8
Volt.
- When the battery is fully charged: Turn the charging
equipment off and remove the mains lead from the wall
outlet.
- Now remove the clamps for the charging equipment .
- Close the red cover on the positive pole.
- Close the hood=:>
page 280.
A discharged battery can freeze at temperatures of only 32 °F (0 °C) .
Allow a fro zen battery to thaw completely before attempting to
charge it=>&. However , we recommend not using a thawed battery
aga in because the battery casing can be cracked due to i ce formation
and can leak battery acid. .,_
Vehicle care Do-it-yourselt service iTechnical data

IIIIL-_T.:..:..: ir:....:e~ s=---= a~ n:..:..: d:......: w..:....:.. h:....:e~ e= ls=--------------------------------------------------
The tire pressure monitor ing must be reset via rad io or MMI* each
t ime t he press ures are adjusted (e.g. w hen sw itching be tween p artial
and full load pressure) o r after changing or replac ing a tire on yo ur
vehicle => page
316. You ca n find t he recommen ded tire pressures
for your veh icle on the labe l on driver's s ide B-pilla r => page
300.
Tire tread circ umference and vibrat ion characteristics can change and
c a u se a tir e pressure war ning if:
• the t ire pressure in one or more tires is too low,
• t he tire ha s structur al dam age,
• the tire press ure was changed, wheels rotated or rep laced but the
TPM S was no t reset=> page
316.
Warning symbols
1..1' Loss of press ure in at least one tire=> &. Check the tire or tires
and replace or repair if necessary. The indicator light (• in the instru­
me nt cluste r a lso illuminates=> page
12. Check/correct the p res­
sures o f all four tires and reset TPMS via rad io or MMI *.
rr :; (T ire Pressu re M on itor ing System) Tire pres sure! System
malfunction.
If T ,.;> appears after switching the ignition on or w hile
dr iv ing => page
315, fig. 23 3 and the indica to r lig ht 'in th e instr u­
me nt clus ter b links for approx ima tely one m inute and the n stays on,
there is a system ma lf u nct io n. See your authorized Audi dealer as
soon as poss ible.
& WARNING
• If the tir e pres sure indicator appears in the instrument cluster
display, one or more of your tires i s significantly under-inflated.
Reduce your speed immediately and avoid any hard steering or
braking maneuvers. Stop as soon a s possible and check the tires
and their pressures . Inflate the tire pressure to the proper pres­
sure as indicated on the vehicle 's tire pressure label=>
page 300.
Driving on a significantly under -inflated tire causes the tire to
overheat and can lead to tire failure. Under -inflation also is likely
to impair the vehicle's handling and stopping ability.
& WARNING (co ntinued )
• The driver is re sponsible for maintaining the correct tire pres­
sures . You must check the tire pres sures regularly .
• Under certain conditions (such as a sporty driving style , winter
conditions or unpaved roads) , the pressure monitor indicator may
be delayed.
• Ask your authorized Audi dealer if run-flat tires may be used on
your vehicle . Your vehicle registration becomes invalid if you u se
the se tires when not permitted. Damage to your vehicle or acci­
dents could also result.
[ i ] Tips
• T he tire pressure monito ring system stops working when there is
an ES P/ABS malf u nctio n.
• Using snow cha ins may res ult in a system ma lf u n ct ion .
• The tire pressure mon itor ing system on your Au di was calibrated
using t ires with the "AO" or "RO " id ent ificat ion . We re comme nd
using these tires. •
Applies to vehicles: with tire p ressure monito ring sys tem
Reset tire pressure monitoring system
I f the tire pressure is adjus ted, wheels are rotated or
changed, th e TPfvf S must b e re set via radio or fv1fv1 I*.
- Turn on the ign it ion .
- Sele ct: Fu nct ion bu tton
[C AR]> Tire pressure monitoring
> Store now.
[ i ] Tips
Before resett ing the TPMS, the current pressures of all four t ires
mus t co rrespo nd to the specifie d val ues. A djust the tire pre ssure and
~

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Fuses and bulbs
Electrical fuses
Replacing fuses
Fuses that have blown will have metal strips that have
burned through .
Fig. 24 4 Left cockp it:
f use panel cove r
The fuses are located at the front left and right of the cockp it
and behind the trim on the righ t side of the luggage compart­
ment .
- Turn off the ignition and the affected electrical
consumers.
- Check the following table to see which fuse belongs to the
consumer.
- Remove the appropriate cover.
- To remove the purple plastic clip if necessary
4>, hold onto
it at the small s ide and pull it out of the fuse panel
=--page 329, fig . 245.
4
) Yo u ca n dis p ose of the p las tic cli p afte r remo vin g it.
- Remove the clamp from the rear side of the fuse cover
=> fig. 244.
-Remove the fuse using the clamp and replace the blown
fuse with an identical new one .
& WARNING
Do not re pair fu se s a nd neve r replace a blo wn fuse with one t hat
ha s a hig her amp rating . Th is c an ca use d am ag e to t he elec tric a l
sys tem and a fire.
0 Note
If a n ew fus e burns out again after shortly have you hav e installed it,
have the electrica l system checked by your authorized Audi dealer.
[I) Tips
• The fo llow ing tab le does not list fuse locat ions that are not used .
• Some of the equipment items listed are optional o r only ava ilable
on certain model configurat ions .•

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No. Consumer Amps
8 II vehicle electrical system control modu le 1 30
-
9 L eft rea r window regula to r moto r 7
,5
10 Vehicle electrical system control module 1 30
11 R
ight rear window regulator motor 7,5
1 2 C onvenience electron ic s 5
Right cockpit fuse assignment
Fig. 246 Right coc kp it :
fuse panel with pla sti c
clip
•
No. Consumer Amps
Fuse panel @ (black)
5 Steer ing column switch module 5
6 Electronic Stabilization Program
5
7 Terminal 15 diagnostic connector 5
8 Gateway (Databus diagnostic interface)
5
Fuse panel
® (brown)
1 CD-/DV D player 5
2 Aud
i drive se lect switch module
s
3 MMI/Radio 5/20
4 Instrument clust er s
5 Gateway (instrument cluster control module) s
6 Ignition lock 5
7 Rotary light switch s
8 Climate control system blower 40
9 Steer ing colum n lock
5
10 Climate cont rol 10
11 Terminal 30 diagnostic connector
10
1 2 Steering column sw itch module 5
•

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The safety compliance sticker
is your assurance that yo ur new vehicle complies with all applicable
Fede ral Motor Veh icle Safe ty Standards which were i n effect at the
time the vehicle was manufact ured . Yo u can fi nd this sticker on the
left doo r jamb.
It shows the mont h and year of prod uct io n and the
vehicle identification number of your veh icle (perforation) as well as
the Gross Vehicle Weight Rating (GV WR) and the Gross Axle Weight
Rating (GAWR).
The high voltage warning label
is located o n the loc k carrier.
The spark ignition system complies with the
Canadian standard ICES-002. •
Weights
Gross Vehicle Weight Rating
The Gross Vehicle Weight Rating (GVWR), and the Gross Axle Weight
Rating (GAWR) for front and rear are listed on a sticker on the left
door jamb.
T he Gross Vehicle Weight Rating includes the weight of the basic
vehicle pl us f ull f uel tank, oil and coo la nt, plus max im um load, whi ch
includes passenger we ight (150 lbs/68 kg per des ignated seating
position) and luggage weight~& .
Gross Axle Weight Rating
The Gross Axle Weight Ra ting is the maximum lo ad that can be
applied at each axle of the vehicle~&.
Vehicle capacity weight
The vehicle capac ity weight (max . load) is listed either on the driver's
side B -pillar or inside the fuel fille r flap .
Safety first
& WARNING
• The actual Gross Axle Weight Rating at the front and rear axles
s hould not exceed the permis sible weights, and their combination
must not exceed the Gross Vehicle We ight Rating.
• Exceeding permi ssible weight rating s can result in vehicle
damage, accidents and personal injury .
0 Note
• The vehicle capac ity we ight figu res apply when the load is distrib­
uted evenly i n the vehicle (passengers and luggage). When trans ­
porti ng a heavy load i n the l uggage compartment, ca rry the load as
near to the rear axle as possible so that the veh icle's handling is not
impa ired.
• Do not exceed the maximum permiss ible axle loads o r the
maximum gross vehicle weig ht. Always remember that the vehicle's
hand ling will be affecte d by the extra load. Therefore, adjust your
speed a ccording ly .
• Always observe loca l reg ulations. •
Dimensions
The specifications refer to the basic mo de l. Differences may occur
depend ing on the model ty pe a nd options ordered, for exam ple, tir e
sizes .
0 Note
When d riving up steep ramps, on rough roads, over c urbs, etc . it is
impo rtan t to remember th at some parts of yo ur vehicl e, s uch as
spoilers or ex haust system components, may be close to the ground.
B e careful not to d amage them .•
Do-it,yourself service Technical data

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• oil changes, and
• cl eaning or re placing t he air fi lter.
W For the sake of the environment
By reg ula rly m ainta ini ng yo ur vehicl e, you h elp ma ke sure th at emis­
sion standards are ma inta ined, thus mi nimizi ng adve rse effects o n
t he environmen t.•
Important considerations for you and your
vehicle
T he i ncreasing use of e lec tronics, soph is tica ted f uel inject io n a nd
em ission cont rol systems, and the gene rally increasing tec hnica l
c o m plex ity of to d ay' s automob iles, have ste adily re duced the s cope
of ma intenance and repairs wh ich can be carr ied o ut by vehicle
ow ne rs.
Also, safety and environmental co ncerns p lace very st ric t
limits o n the nature of re pairs and adjust ments to engi ne and trans­
mission parts which an owner c an per form .
Ma int ena nce, ad justments and repairs us ually r equire sp ecial tools,
test ing devices an d other e quipme nt available to s pec ia lly trai ne d
wo rks ho p pe rsonn el in order to assure p roper perfor mance, rel i­
ability and safety of the vehicle and its many systems.
Impro per m aintenan ce, a djustments an d repair s can im pair the ope r­
ation and reliability of your vehicle and even void your vehicle
wa rranty . Therefo re, proo f of se rvicing in accordan ce wi th the ma in ­
t enance schedule may be a condi tion fo r upholding a possib le
wa rranty cla im made w it hi n the wa rra nty period .
Above all, operat io nal safety can be adversely affected, crea ting
unnecessary risks for you and your passe nge rs.
I f i n do ub t abou t any se rvi cing, have it done by you r authorized Audi
dealer or a ny other pro perly eq uipped and qualified wo rkshop . We
st rong ly ur ge yo u to give you r a uth orized Aud i dea ler the opportun ity
t o pe rfor m all scheduled mainte nance a nd necessary repairs. Yo ur dea
ler has t he facilit ies , original parts a nd trai ned spec ia lists to keep
you r vehicle ru n ning pr operly.
Performing limited maintenance yourself
The follow ing pages des cribe a lim ited nu mber of pro ce dur es which
can be perfo rmed on your vehicle wit h ord ina ry tools, s houl d the need
a ris e a nd tra ined p erson ne l b e unavailable. Before perfo rm ing any o f
these procedures, always thorough ly r ead a ll of the applicab le text
a nd caref ully follow the ins truc tion s given. A lw ays r igoro usly o bserve
t he
WARNINGS prov ided .
Before you check anything in the engine compartment, always read
and heed all WARNINGS=>
& and=> & in "W orkin g in t he engine
compartment" on
page 280.
& WARNING
• Serious personal injury may occur as a result of improperly
performed maintenance, adjustments or repairs.
• Always be extremely careful when working on the vehicle.
Always follow commonly accepted safety practices and general
common sense . Never risk personal injury .
• Do not attempt any of the maintenance, checks or repairs
described on the following pages if you are not fully familiar with
these or other procedures with respect to the vehicle, or are uncer­
tain how to proceed.
• Do not do any work without the proper tools and equipment.
Have the necessary work done by your authorized Audi dealer or
another properly equipped and qualified workshop.
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never reach into the area around or touch the
radiator fan. It is temperature controlled and can switch on
suddenly -even when the engine is off and the ignition key has
been removed . The radiator fan switches on automatically when
the coolant reaches a certain temperature and will continue to run until the coolant temperature drops. _,,,