2009 AUDI S4 CABRIOLET battery

• .___S_ e_a _ t_ s_ a_ n_ d_ s_t _o _r_ a...; g==- e ________________________________________________ _
The socket of the cigarette lighter may be used for 12 -volt appli ­
ances with maximum consumption of up to 100 wat ts, such as a
flash light, small vacuum cleaner, etc.
Before you purchase any accessories, always read and fo llow the
informat ion in~ page
318, "Additional accessories and parts
replacement".
& WARNING
Improper use of the cigare tte l ighter can cause seriou s injury or
s ta rt a fire .
• Be c are ful when u sing the cigarette lighter. If you do n ot pay
attention t o what you a re do ing wh en you are u sing the cig are tte
lighter you can burn yourself .
• The cig arette lighte r and so ck et r em ain fu nctio nal e ven if the
ign ition i s switched off or the ig nition k ey is re m oved . Never l eave
c hildren in side the veh icle w ithout supe rvisi on.
0 Note
• To avoid damaging the socket, only use p lugs that fit properly .
• Only use the cigarette lighter socket as a power source for elec­
trical accessories for short durations. Use the socke ts in the vehicle
when a power source is needed for longer durations .
[ i ] Tips
When the engine is off and accessories are sti ll plugged in and are
on, the vehic le battery can sti ll be drained. •
Outlets
The outlet in the front center console and in the luggage
compartment may be used for 12-volt appliances .
IJ
-
Outlet in the front cent er co nsole
Fig. 12 3 Center
co nsole, fron t: 12-volt
outl et
F ig . 12 4 Sid e trim i n
lu gga ge co mpartmen t:
1 2- vol t outl et
Fo ld the cover fo r the outlet down => fig . 123.
Plug in appliance to be used .
Outlet in the luggage compartment
Tap cover => fig. 124.
Plug in appliance to be used .

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The outlet may be used for 12-volt appliances with maximum
consumption of up to 100 watts, such as a flash light, small vacuum
cleaner, etc.
Before you purchase any accessories, a lways read and follow the
information in~
page 318, "Additional accessories and parts
replacement".
& WARNING
The outlet plus any appliances plugged into it remain functional
even if the ignition is switched off or the ignition key is removed.
Never leave children inside the vehicle without supervision.
0 Note
To avoid damaging the socket, only use plugs that fit properly.
[ i] Tips
When the engine is off and accessories are still plugged in and are
on, the vehic le battery can still be drained. •
Storage
General
& WARNING
• Always remove objects from the instrument panel. Any items
not put away could slide around inside the vehicle while driving or
when accelerating or when applying the brakes or when driving
around a corner.
• When you are driving make sure that anything you may have
placed in the center console or other storage locations cannot fall
Contro ls and eq uip­
ment
& WARNING (continued)
out into the footwells . In case of sudden braking you would not be
able to brake, depress the clutch or accelerate .
• Any pieces of clothing that you have hung up must not interfere
with the driver's view. The coat hooks are designed only for light­
weight clothing . Never hang any clothing with hard , pointed or
heavy objects in the pockets on the coat hooks . During sudden
braking or in an accident -especially if the airbag is deployed -
these objects could injure any passengers inside the vehicle. •
Glove compartment
The glove compartment is illuminated and can be locked.
To open glove compartment
Fig. 125 Glove
compartment
P ull the handle~ fig. 125 in the direction of the arrow
and pull the lid down.
To close glove compartment
Push the glove compartment lid upward until the lock
engages.
In the glove compartment lid, you w ill find a place to store a pen and
a pad of paper . ..,_
~ehicle care irechnical data

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Ignition lock and ignition switch
Ignition lock
T he i gnition k ey sta rts or st ops t he e ngin e.
0
Ignition off 0
Fig. 13 6 Ignition lock
positi ons
In position~ fig. 136 0 both the ignition and engine are off, and
t he stee rin g is locke d.
To
lo ck the steering after you have removed the ignit ion key, turn
t he stee rin g wheel in either direc tion un til you hear it loc k into
p lace . You should always lock the steering whenever you leave your
vehicle . This ma kes a vehic le theft even more difficult ~ & .
Ignition on 0
If it is difficult to turn the key afte r yo u have inserted it into the igni­
tion lock, turn the steering wheel back and forth. This will take the
load off the steering lock mechanism and you will be able to turn the
key free ly an d start the engine.
Starting the engine @
In th is position the engine starts . While the engine is starting, the
power supply to the headlights and other electrical consumers is
temporarily interrupted to conserve battery power. After the engine has started, release the key and it wi ll return to position
(v.
Contro ls and eq uip­
ment
Before the starter can be operated again the key must be turned
b ack to position
(D . Th e non -repeat lock p re vents y ou fr om
damag ing the starter when the engine is running .
& WARNING
• Never remove the key from the ignit ion lock while the vehicle is
moving. The steering wheel will lock causing loss of control .
• If you have to leave your vehi cle- even for just a minute- always
remove the ignition key and take it with you. This is especially
important if you are going to leave children behind in the vehicle.
The children could start the engine or use other vehicle controls. Unsupervised use of vehicle controls (for e xample , power
windows) can cause serious personal injuries.
[ i ] Tips
If the vehicle battery has been disco nnec ted and then recon nected,
then you must leave the key in position
0 for about 5 seconds
be fore you can start the eng ine .•
Ignition key safety lock
T he i gnit ion key ca n only be remove d when the se lector
lever is in the "P " (Pa rk) pos itio n.
A fte r swi tc h ing o ff th e ig nition, the ig nition key can only be
removed from the ignition lock when the selector lever is in the "P"
(Park) posi tio n. Af ter y ou h ave remo ved the key, the selec to r lever is
locked and cannot be moved. •
~ehicle care irechnical data

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& WARNING (continued )
• Always make sure that the side airbag can inflate without inter­
ference :
- Never install seat covers or replacement upholstery over the
front seatbacks that have not been specifically approved by
Audi.
- Never use additional seat cushions that cover the areas
where the side airbags inflate.
- Damage to the original seat covers or to the seam in the area
of the side airbag module must always be repaired immedi ­
ately by an authorized Audi dealer.
• The airbag system can be activated only once. After an airbag
has inflated, it must be replaced by an authorized Audi dealer or
qualified technician who has the technical information , training
and special equipment nece ssary.
• The airbag system can be deployed only once . After an airbag
has been deployed , it must be replaced with new replacement
part s designed and approved especially for your Audi model
version. Replacement of complete a irbag systems or airbag
components must be performed by qualified workshops only .
Make sure that any airbag service action is entered in your Audi
Warranty
& Maintenance booklet under AIRBAG REPLACEMENT
RECORD .
• In accidents when an airbag is deployed , the vehicle battery
s eparates the alternator and the starter from the vehicle electrical
system for safety reasons with a pyrotechnic circuit interrupter.
-Work on the pyrotechnic circuit interrupter must only be
performed by a qualified dealer -risk of an accident !
- If the vehi cle or the circuit interrupter is scrapped , all appli ­
cable safety precautions must be followed . •
Controls and equip­ ment Safety first
Vehicle operation
Other things that can affect Advanced Airbag
performance
Changing the vehicle 's suspension system can cha nge the way that
the Advanc ed Ai rbag Syste m perfor ms in a cras h. Fo r ex amp le,
u sing tire -rim combinations not a pproved by Audi, lowering the
ve hicle , c hang ing the st iffness o f the suspe nsion, inclu din g the
spr ings, s uspension struts, shock absorbers etc. can change the
fo rc es that ar e meas ured by th e a irbag sens ors and sent to the e lec ­
tronic control un it. Some suspens ion changes can, for example,
in crea se th e fo rc e leve ls meas ured by th e se nsors and ma ke t he
airbag system dep loy in crash es in wh ich it wou ld not dep loy if the
c h anges had no t been m ade . Ot her k in ds of cha nge s m ay red uce
the fo rce levels measured by the sensors and p revent t he airba g
fr om depl oyin g whe n it should.
T he sensors in the safe ty b elt b uckle fo r the driver a nd front
passenger seat te ll the electronic control module if the safety belt is
l a tc h e d or not. If the s afe ty be lt is bei ng use d, t he fr ont ai rbag w ill
dep loy at a s lightly higher rate of vehic le dece leration than if the
sa fe ty belt is not be ing used . T here for e, in a partic ular co lli sion , it is
possible t hat an airbag will not dep loy at a seating position w here
the safe ty belt is b ein g us ed b ut will infl ate a t th e po siti on w here the
safety belt is not being used. It is important that nothi ng interfere
with the safety belt b uck les so that the sensors can send the correct
i nformat ion about safety b elt use to the electronic control un it.
& WARNING
Changing the vehicle's suspension including use of unapproved
tire -rim combinations can change Advanced Airbag performance
and increase the risk of serious personal injury in a crash.
• Never install suspension components that do not have the
same performance characteristics as the components originally
installed on your vehicle .
• Never use tire-r im combinations that have not been approved
by Audi. .,.
Vehicle care Do-it-yourself service Technical data

-~_C_ h_e _c _ k_ i_ n ...:::g:;..._ a_n_ d_ f_ i_ll _in ....;g:::;.._ ___________________________________________ _
Closing the engine hood
-Pull t he hood down until the pressure from the strut is
reduced.
- Let t he hood
drop down and latch in place. Do not try to
push it shut;
it may fai l to engage ~& .
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ 6 .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake.
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park);
put manual transmission in Neutral.
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood .
• Keep children away from the engine compartment.
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm. The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery .
- Never smoke or work near heaters or open flames. Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch :
- Ignition cables
- Other components of the high voltage electronic ignition
system.
• If you must perform a check or repair with the engine running:
~

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& WARNING (conti nued )
-First , fully apply the parking brake , move selector lever of
automatic transmis sion to "P " (Park) ; put manual transmiss ion
in Neutral.
- Always u se extreme caut ion to prevent clothing, jewelry , or
long hair from getting caught in the radiator fan, V-belts or
other moving parts , or from conta cting hot parts. Tie back hair
before starting , and wear no cloth ing that will hang or droop
into the engine.
• Minimize exposure to emission and chemical hazards
~ & .
& WARNING
California Proposition 65 Warning :
• Engine exhaust , some of its constituents , and certa in vehicle
components contain or emit chemicals known to the State of Cali ­
fornia to cause cancer and birth defects and reproductive harm . In
addition , certain fluids contained in vehicles and certain produ cts
of component wear contain or emit chemicals known to the State
of California to cause cancer and birth defects or other reproduc ­
tive ha rm .
• Battery post s, terminals and related acces sories contain lead
and lead compounds , chemicals known to the St ate of California
to cause cancer and reproductive harms. Wash hands after
handling.
0 Note
When adding f luids, always make sure that they are poured into the
p roper container o r filler opening, otherwise se rio us damage to
vehicle systems will occur .
W For the sake of the environment
To detect lea ks i n tim e, inspect t he v ehi cle floor pa n from u nde r­
neath regularly. If you see spots from oil or other vehicle fluids, have
y o ur v ehicl e inspected by an author ized Au di dea ler. •
Engine compartment
App lies to veh icles: with 2 .0 I turbo, 4-cylinder •engine
2.0 I , 4-cylinder turbo engine (200 hp )
The se are th e m ost important items that you can check .
Fig. 196 Engine comp art m ent : 2 .0 I, 4-cy lind er turbo
G) Battery ..................................... •..
0 Engine oi l fi lle r ca p ('1:::r.l ..... ... ... ....... .... .. .
© Bra ke fluid reservoir ( ) ..... ... .... ... ... ... .. . .
© Engine oil dipstick (orange) ........ .......... ... .
Vehic le care
N
N
I
261
255
2 60
25 4 ...
irechnical data

-Ch
ecking and filling
_ _..;:::;__=----------------
©
©
0
Coolant expansion tank (.J_ J .. .. .. .. . ... .. .. .... .
Windshield/head light washer container ( O ) ..... .. .
Po wer steering re servoi r
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNINGS
=> & in "Working in the engine
c ompartment " on
page 250. •
Applies to veh icles : w ith 6 ·cy lind er engine
3.2 liter , 6-cylinder engine (255 hp)
258
266
217
Th ese a re t he most im por tan t it em s th at you c an ch eck.
F ig . 197 Engine compartment : 3.2 liter , 6- cylinder
G) Battery ... ... .. ...... .... ... .... .... .... ..... .
0 Bra ke fluid reservoir ( l ....... .. .. .. .. ...... .. .
© Engine oil fi ller cap ('t:::n) ..•. ..• ..... .•. ...• ..•..
26 1
260
255
©
©
©
0
Engine oil dipstick (orange) ...... ..... ... .... ... .
Coolant expansion tank
( -L J .. ... ... . .... ... ... .. .
W indshield/headligh t washer c ontainer (O l .. .... . .
Powe r steering rese rvoir
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
=> & in "Working in the engine
compartmen t" on
page 250. •
Engine oil
Engine oil specifications
254
258
266
2 17
The engine oil used in your Audi needs the right kind of
oil.
The engi ne in y our Audi is a sophisticated powe rp lan t tha t was built
to exacting specifications. This engine needs the right kind of
eng ine oil that meets specifications regarding quality and viscos ity
so that it can run smoothly and reliably . Choosing the right oil and
changing oil within the time and mileage interva ls printed in your
vehic le's Warranty
& Maintenance booklet matters a lot more today
than it did years ago. Audi has developed a special quality standa rd
f or e ngin e oil tha t w ill help assure that your vehicle's engine will get
the lubrication it needs for proper operation.
Modern engine lubrication has taken a quantum leap i n the last few
years. Many synthetic oils ava ilable today provide better engine
lubrication that can o utlast traditional petro leum -based oil s,
making them a smart choice for use throughout the life of your Audi.
Whether you use synthetic or petro leum -based engine oil, the oi l
tha t you use mus t conform to Audi 's oi l qual ity standard VW 502 00
to help keep your vehicle's engine running smoothly and help ._

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•
The brake fluid reservoir is located at the rear partition of the engine
compartment on the left side~
page 252 .
The fluid level may drop slightly after some time due to the auto­
matic adjustment of the brake pads. This is not cause for alarm .
If the brake fluid level falls
considerably below the "MIN" mark, the
brake warning/indicator light (U .S. models :
BRAKE, Canadian models :
(CD) ) wi ll come on
~ page 23 and ~ page 30. Do not continue to
operate the vehicle. The complete brake system should be thor ­
oughly checked by an authorized Audi dealer or qualified workshop
and the cause corrected . If the brake fluid level is too low, the brake
warning/indicator light will illuminate. Contact an authorized Audi
dea ler
immediately .•
Changing brake fluid
Have the brake fluid changed by an experienced techni­
cian.
Brake fluid absorbs moisture from the air . If the water content in the
brake fluid is too high, corrosion in the brake system may result
after a period of time. The boiling point of the brake fluid wil l also
decrease considerably and decrease braking performance.
Therefore, the brake fluid must be changed
every two years. Always
use new brake fluid which conforms to Federa l Motor Vehic le Stan­
dard "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficult to reach, therefore, we
recommend that you have the brake fluid changed by your autho ­
rized
Audi dealer. Your dealer has the correct tools, the right brake
fluid and the know -how to do this for you.
& WARNING
• Brake fluid is poisonous. It must be stored only in the closed
original container out of the reach of children!
& WARNING (continued)
• Brake failure can result from old or inappropriate brake fluid.
Observe these precautions :
- Use only brake fluid that meets SAE specification
J 1703 and
conforms to Federal Motor Vehicle Standard 116. Always check
with your authorized Audi dealer to make sure you are using
the correct brake fluid. The correct type of brake fluid is also
indicated on the brake fluid reservoir .
- The brake fluid must be new . Heavy use of the brakes can
cause a vapor lock if the brake fluid is left in the system too
long. This can seriously affect the efficiency of the brakes as
well as your safety . This could result in an accident.
0 Note
Brake fluid wil l damage the paint of your vehicle .
ci> For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special tools required and the necessary expertise, we recom­
mend that you have the brake fluid changed by your authorized Audi
dealer. •
Battery
General information
Under normal operating conditions, the battery in your Audi does
not need any maintenance. With
high outside temperatures it is
advisab le however to check the fluid level at regular intervals
through the transparent battery housing. Also check the fluid level
each time you charge the battery . After charging the battery
~ page 265, you shou ld likewise check the battery acid level. ...
Vehic le care