2009 AUDI A4 CABRIOLET change wheel

• .___O_ n_ t_ h _e _ ro_ a_d __________________________________________________ _
Storing a sp eed
You must set and then store a vehicle speed using the
cruise control.
Fig . 138 Cruise control
switches
- Accelerate until you reach the driving speed you want to
store.
Pull lever @ towards the steering wheel
G) => fig. 138 to
switch the system on.
Press button
® ·
After you release button@, the current vehicle speed is stored and
maintained. •
Changing a stored speed
You can change a stored speed.
Accelerate (faster)
-Lift lever @ toward 0 => fig. 138.
Release the lever to store the new speed.
Decelerate (slower)
-Lower lever@ toward O => fig. 138.
- Release the lever to store the new speed.
You can also increase the vehicle speed by depressing the acceler­
ator pedal. The vehicle speed will increase as long as you keep the
accelerator pedal depressed. When you let up on the accelerator
pedal, the vehicle speed will automatically return the to previously
stored vehicle speed in the cruise control.
If the actual vehicle speed exceeds the stored vehicle speed in the
cruise control for longer than five minutes and by more than 6 mph
(10 km/h), the cruise control will automatically erase the stored
vehicle speed and you will have to reset the cruise control again.
Tapping the lever lightly @
By lightly tapping the lever@toward G) ~ fig. 138, you can
increase vehicle speed by approximately 1 mph (2 km/h).
By lightly tapping the lever @toward
O ~ fig. 138, you can
decrease vehicle speed by approximately 1 mph (2 km/hl. •
Switching the system off t emporarily
Either of the following actions will temporarily deactivate
the cruise control:
- pressing the brake pedal, or
- pressing the clutch pedal (on manual transmission
models), or
moving the lever@ up in direction
@ (not engaging)
=>fig .138.
When you temporarily deactivate the cruise control for a brief
period, the previously stored vehicle speed remains in the memory. -.,

___ A_ ir_b _ a_ g~ s_ y_s _t _e _m _________________________________________________ _
& WARN IN G (c ontinu ed )
seating posit ion and ha ve the airb ag system inspected by your
Audi dealer .
• A t ight tether or other strap on a rearward-fa cing child restr aint
atta ched to the front pas senger se at can put too much pres sure
on the weight-sensing mat in the seat and reg ister more weight
than i s actually on the seat. The heavier weight registered can
make the system work as though an adult were on the seat and
deploy the Advanced Airbag when it must be suppre ssed causing
serious or even fatal injury to the child .
• If, in exc eptional cir cum stance s, you mu st in stall a forward ­
facing child restraint on the front passenger seat , always move the
seat into its rearmost po sition in the seat's fore and aft adjust ­
ment range , as far away from the airbag as possible . The ba ckrest
must be adjusted to an upright position. Make sure that the
PASSENGER AIR BAG OFF light comes on and stays on all the time
whenever the ignition is switched on .
& WARNING
• If the PASSENGER AIR BAG OFF light does not go out when an
adult is sitting on the front passenger seat after taking the steps
described above, make sure the adult i s properly seated and
restrained at one of the rear seating position s.
• Have the airbag system inspected by your Audi dealer before
transpo rting anyone on the front passenger seat .
[ i ] Tips
If the weight -sensing mat in the front passenger seat detects an
e m pty seat , the fron t airbag on the passenge r side will be tu rned
off, and PASSENGER AIR BAG OFF will stay on.•
Repair, care and disposal of the airbags
P arts of the airbag system are installed at many different p laces on
your Au di. Insta lli ng, removing, se rvic ing or repa iring a par t in an
area of the vehicle can damage a part of an airbag system and
p revent that system from w orking properly in a c ollisi on.
There are some important things you have to know to make sure
that the effectiveness of the system will not be impai red and that
discarded componen ts do no t cause injury or po llute t he e nv iro n­
ment .
& WARNING
Improper care , servicing and repair procedures can increase the
risk of personal injury and death by preventing an airbag from
deploying when needed or deploying an airbag unexpectedly:
• Never cover , obstruct , or change the steering wheel horn pad
or airbag cover or the instrument panel or modify them in any way .
• Never attach any objects su ch as cup holders or telephone
mountings to the surfa ces covering the airbag units .
• For cleaning the horn pad or instrument panel , use only a soft ,
dry cloth or one moistened with plain water. Solvents or cleaner s
c ould damage the airbag cover or change the st iffness or strength
of the material so that the airbag cannot deploy and protect prop­
erly .
• Never repair , adju st, or change any parts of the airbag sy stem .
• All work on the steering wheel , instrument panel, front seats or
electrical system (including the installation of audio equipment ,
cellular telephones and CB rad ios , etc .I must be performed by a
qualified technician who has the training and special equipment
necessary .
• For any work on the airbag system, we strongly recommend
that you see your author ized Audi dealer or qualified workshop .
• Never modify the front bumper or parts of the vehicle body .

Braking
General information
What affects braking efficiency?
O pera tin g co ndition s and drivi ng h abit s
The brakes on today's automobiles are still subject to wear,
depending large ly on operating conditions and dr iving habits~
&­
On vehicles that are either driven mostly in stop -and -go city traffic
or are driven hard, the brake pads shou ld be checked by your autho­
rized Audi dealer more often than specified in the
W arr anty & Main ­
t e nanc e bo okle t.
Fai lure to have you r brake pads inspec ted ca n
resu lt in reduced brake performance.
On steep slopes, you shou ld use the braking effect of the engine.
This way, you prevent unnecessary wear on the brake system. If you must use your brakes, do not hold the brakes down continuous ly.
Pump the brakes at intervals.
Moi sture or road salt
If you are driv ing faster than 50 mph (80 km/h) and the windshie ld
wipers are on, the brake pads wi ll briefly touch the brake discs in
regu lar intervals so as to improve reaction time when braking on
wet surfaces. You, the driver, wil l not notice anything.
Under ce rta in conditions, for example, when dr iving through water
or very heavy rain, or even after washing your vehicle, the braking
effect can be reduced due to moisture (or in freezing conditions ice)
on the brake pads. A few cautious brake applications should dry off
the b rake pads or remove any ice coatings .
At speeds
over80 km/h and with the windshie ld wiper turned on, the
brake pads are app lied briefly to the brake discs. This occurs at
regu lar interva ls wi thout the driver not icing and provides for better
brake response time under wet conditions.
The effectiveness of the brakes can be reduced when the vehicle is driven on a sa lt-covered road and the brakes are not used. Likewise,
Controls and equip­
ment Safety first Vehicle operation
Int
ellig ent tec hnol ogy
you clean off accumulated sa lt coating from brake discs and pads
with a few ca utious applications of the brake ~
&-
Cor rosi on
There may be a tendency for dirt to build up on the brake pads and
corrosion to form on the discs if the car is not driven regularly or
only f or sho rt trips with little use of the brakes.
If the brakes are not used frequently, or if corrosion has formed on
the discs, it is advisable to clean off the pads and discs by braking
firm ly a few times from a moderately high speed~
&-
Fa ults in the brake system
If you shou ld notice a sudden increase in brake pedal trave l, then
one of the two brake circuits may have failed~
&-
Lo w brak e fluid l evel
Malfunctions can occur in the brake system i f the brake fluid level is
too low . The brake fluid level is monitored electronically .
Brake lining wear statu s
Brake lining wear may be checked by visua l inspection of the condi ­
tion o f the brake pads through the open ings in the wheel. If neces­
sary, the wheel may be removed for this inspection
~ page 293,
"Whee l change".
& WARNING
• You should perform braking maneuver s for the purpo se of
cl eani ng th e br ake sy stem onl y if ro ad condition s permit . Other
road u se rs mu st not be put a t ris k -you may cau se an accident!
• Before des cending a steep gr ade , reduce sp eed and sh ift tr ans ­
mi ssion into a lower gear or lower driving po sition . Do not ride the
brake s or hold the pedal d ow n too long or t oo often . This could
cau se the brake s to get hot and dimini sh brakin g efficien cy . _.
Vehicle care Do-it-yourself service Technical data

Tires a nd wh eels BIii ________________________________ :....:.:.....::.=.....::.:..:..:..::..:___:___:..__ __
•
Tires and wheels
Tires
General notes
Tires may be the least appreciated and most abused parts
of a motor vehicle.
Tires may be the least appreciated and most abused parts of a
motor vehicle. Tires are, however, one of the most important parts
of a vehicle, particular ly considering the comparative ly sma ll patch
of rubber on each tire that assures that all -important contact
between you, your vehicle and the road .
Maintaining the correct tire pressure, making sure that your vehicle
and its tires do not have to carry more weight than they can safely
handle, avoiding damage from road hazards and regular ly
inspecting tires for damage inc luding cuts , slashes irregular wear
and overal l condition are the most important things that you can do
to help avoid sudden tire failure including tread separation and
b lowouts .
Avo iding d am age
If you have to drive over a curb or similar obstacle, drive very slowly
and as close as possible at a right angle to the curb.
A lways keep chemica ls including grease, oil, gasoline and brake
flu id off the ti res .
I nspect the tires regularly for damage (cuts, cracks or blisters, etc .!.
Remove any foreign bodies embedded in the treads .
Storing tire s
Mark tires when you remove them to indicate the direction of rota ­
tion. This ensures you to be ab le to mount them correctly when you
reinstall them. When removed, the whee
ls or tires should be stored in a coo l, dry
and preferably dark place.
Store tires in a vertical position i f they are not mounted on r ims, in
a horizontal position if they are mounted on rims.
N ew tire s
New tires have to be broken in => &.
The tread depth of new tires may vary, according to the type and
make of tire and the tread pattern.
Hidd en d am ag e
Damage to tires and rims is often not readily visible . If you notice
unusua l vibration or the vehic le pul ls to one side, this may indicate
that one of the tires has been damaged . The tires must be checked
immediately by an author ized Audi dealer or qualified workshop .
Uni dir ection al tire s
A unidirect ional tire can be identified by arrows on the sidewa ll, that
point in the direction the tire is designed to rotate. You must fo llow
the specified direction of ro tation . This is necessary so that these
tires can deve lop their optimum characteristics regarding grip, road
noise, wear and hydroplaning resistance . For more information
=> page 298.
Rim s with bolted rim ring *
Light-alloy wheels with a bo lted rim ring consist of several parts .
These parts are screwed together with special bo lts, using a specific
technique. This ensures proper function, seal, safety, and true running of the wheel. For this reason, damaged rims shou ld be
replaced, and you should never repair or dismantle them
=> & .
Rim s with screw -on decorative co vers *
Light-a lloy whee ls can be furnished with interchangeab le decora -
tive covers that are mounted to the rim with se lf -locking bolts. ...
Vehic le care

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Rei nf orced tire
means a tire designed to operate at higher loads and at higher inf la ­
tion pressures then the corresponding standard tire. Reinforced
tires my be identified as "XL",
"xi", "EXTRA LOAD", or "RF" on the
sidewall.
Rim
means a metal support for a tire or a tire and tube assembly upon
which the t ire beads are seated.
R im di am eter
means nomina l diameter o f the bead seat. If you change your wheel
size, you wi ll have to purchase new tires to match the new rim diam­
eter.
R im size des ig nati on
means rim diameter and width.
Rim width
means nominal distance between rim flanges .
Sidewall
means that portion of a tire between the tread and bead.
Speed rating (le tter code )
means the speed at which a tire is designed to be driven for
extended periods of time . The ratings range from 93 mph ( 150 km/h)
to 186 mph (298 km/h)~
page 281. You may not find this informa­
tion on a ll tires because it is not required by law .
The speed rating letter code, where appl icable, is molded on the tire
sidewal l and indicates the maximum permissible road speeds~
&
in "Winter tires" on page 284 .
Tire pres su re m onitoring s yste m*
means a system that detects when one or more of a vehicle's tires
are underinflated and i lluminates a low tire pressure warning te ll­
tale .
Trea d
means that portion of a tire that comes into contact with the road .
Trea d se parati on
means pulling away of the tread from the tire carcass .
Treadw ear indi cato rs (TWI)
means the projections within the princ ipal grooves designed to give
a visual indication of the degrees of wear of the tread. See
~ page 278, "Tread Wear Indicator (TWI)" for more informatio n on
measuring tire wear.
Uniform Tire Q uality Gra ding
is a tire information system developed by the United States National
Highway Traffic Safety Administration (N HTSA) that is designed to
help buyers make relative comparisons among tires. The U TQG is
not a safety rating and not a guarantee that a tire wil l last for a
prescribed number of miles or perform in a certain way. It simply
gives tire buyers additiona l information to combine wit h other
considerations, such as price, brand loyalty and dea ler recommen­
dations. Under UTQG, tires are graded by the tire manufacturers in
three areas: treadwear, traction and temperature resistance . The
UTQG information on the tires, molded into the sidewalls.
U.S . D OT T ir e Ident ifi ca tion Num ber (T IN )
This is the tire's "serial number" It begins with the le tters "DOT" and
indicates that the tire meets all federa l standards . The next two
numbers or letters indicate the plant where it was manufactured,
and the last four numbers represent the week and year of manufac­
ture. For example,
D OT ... 2 209 ...
means that the tire was produced in the 22th week of 2009 . The
other numbers are marketing codes that may o r may not be used by
the tire manufacturer . This information is used to contact
consumers if a tire defect requires a reca ll. -.,

-Tires and wheels
P'U:1-------------------
warmed up than when it is "cold." It is the inflation pressure in a
"cold" tire that counts. Therefore, you should never let air out of a
warm tire to match "cold tire inflation pressure" recommendations .
The tires would then be underinflated and could fail suddenly.
Maintaining proper tire pressure is one of the most important
things you can do to help avoid sudden tire failure. Underinflated
tires are a major cause of sudden tire failure. Keeping tires at the
right pressure is also important for safe and responsive vehicle
handling, traction, braking and load carrying.
Tire pressures are
particularly important when the vehicle is being driven at higher
speeds, and then especially when heavily loaded even within the
permissible load-carrying capacities approved for your vehicle .
The recommended tire pressures for your Audi depend on the kind
of tires on your vehicle and the number of passengers and/or
amount of luggage you will be transporting.
On USA vehicles, the tire pressure label is located on the driver's
side B-pillar . On Canada vehicles, the tire pressure label is located
either on the driver's side B-pillar or inside the fuel filler flap. The tire
pressure label lists the recommended cold tire inflation pressures
for the vehicle at its maximum capacity weight and tires that were
on your vehicle at the time it was manufactured.
If you wish to improve comfort when operating the vehicle at
normal load (up to 2 occupants), you can adjust tire pressures to
-
those specified for normal vehicle load. Before operating the vehicle
at maximum load, you must increase the tire pressures to those
specified for maximum vehicle load
=> & .
If your vehicle is equipped with a tire pressure monitoring system *,
bear in mind that the system can only monitor the tire pressures you
have stored. The system does not recognize the load condition of
your vehicle.
The effectiveness of the tire pressure monitoring system will be
impaired if you store normal load pressures but then operate the
vehicle at its maximum load=>&.
See the illustration =>
page 271, fig. 207 for the location of the label
either on driver's side B-pillar or inside the fuel filler flap (color of
the actual label and exact location on the vehicle will vary slightly).
Note that the following table is accurate at the time of going to
press and is subject to change. In the event of discrepancies, the tire
pressure label (either on driver's side B-pillar or inside the fuel filler
flap) always takes precedence .
The table below lists the recommended cold tire inflation pressures
for the Audi model covered by your Owner's Literature at the
vehicle's capacity weight and the tire sizes installed on the respec­
tive models as original equipment, or as a factory option.
Engine
(displace­
ment in liter) Tire designation
Tire pressure front Tire pressure rear
4-cylinder
2.0 215/55 R16 93H All Season
235/45 R17 94H All Season
235/45 R17 94Y High Performance
235/40 R18 95Y XL High Performance
normal load
condition (up to
2 occupants)
PSI
33
33
30
36
kPA
230
230
210
250
full load
condition
PSI
35
35 33
42
II kPA
240
240
230
290
normal load
condition (up
to 2 occupants)
PSI
30
30
30
36
JI kPA
210
210
210
250
11 full load
condition
PSI
38
38
33
42
JI kPA
260
260
230
290
I

Tires and wheels -
----------------
•
Engine Tire designation Tire pressure front Tire pressure rear
(displace- normal load normal load
ment in full load
full load
liter ) c
ondit ion (up to
condition c
ondition (up
condition
2 occupants ) to 2 occupants)
PSI kPA PSI kPA PSI kPA PSI kPA
6 -cylinder 215 /55 R16 93H All Season 35 240
38 260
30 2
10
38 260
3.2
235/45 R17 94H All Season 35 2
4 0
38 260 30 2
10
38 260
235/45 R17 94V High Performance 30 2 10 3 3 230 30 2 10 33 230
235 /40 R18 95V XL High Performance 41 280 46 320 41 280 4 6 320
XL= reinforced or extra load tire. It may also appear as x i, EXTRA LOAD , or RF on the tire sidewa ll.
The correct tire pressure for the
spare wheel is located on a label
either on the dr iver's side B-pilla r or i nside the fuel filler flap.
Because technical changes may be made to vehicle equipment
dur ing the mode l year, a lways co mpare the tire size designatio n on
the tire pressure label on your vehicle with the tires on your vehicle .
Make sure t hat the tire s ize informa tion o n the vehi cle labe l is the
same as the size of the tires on the vehicle . This is especially impor ­
t a nt if th e ve hicle belo ngs to someone else or you bough t the
vehic le with different rims/tires or you bought the vehicle as a previ ­
ously owned vehicle.
Re member, your safety and that of your passeng ers a ls o depends
on making sure that load limits are not exceeded. Vehicle load
inc lude s every body and everyt hin g i n and o n the vehic le . These load
limits are techn ically referred to as the vehicle's Gross Vehic le
Weight Ra tin g ("GVWR") . The Gross Axle Weig ht Ra ting ("GAWR") is
the maximum load that can be applied at each of the veh icle's two
ax les . The Gross Vehic le W eight Rating and the Gross Ax le Weight
Rating are listed on the safety compliance sticker label located
either on the driver's s ide 8 -pillar or on the inside of the fuel fi ller
fl ap. T he ti re pressure labe l on your Aud i lists the max imum
combined weight of a ll of the occupants and luggage or other cargo that the vehicle can car
ry. Fo r the l ocat io n of the tire pressure la bel
=> page 271, fig. 207.
LJ}. WARNING
Overload ing a vehicle can cause loss of vehi cle cont rol , a crash or
other ac cident , serious per sonal injury , and even death .
• Carrying more weight than your vehicle wa s designed to carry
will prevent the vehicle from handling properly and increase the
risk of a loss of vehicle control .
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehi cle within a safe dist ance.
• Tires on a vehicle that has been overloaded can fail suddenly
cau sing lo ss of control and a crash .
• Always make sure that the total load being transported -
including the weight of a trailer h itch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
vehi cle 's Gross Vehicle Weight Rating . .,,_
Vehic le care

Tires and wheels -
----------------
•
• The tire pressures should only be checked and adjusted when
t he t ires are co ld . The s lightly raised press ures of warm tires must
not be reduced .
• Adjust t he tire p re ssure to the load you are carrying.
• Reinstall the va lve stem cap on the valve.
When should I check the tire pressure?
The correc t tire p re ssur e is espec ially i mportant at high speeds. The
pressure should there fore be c hecked at least once a month and
a lways before starting a journey. Do not forget to check the tire pres ­
su re for t he spare whee l::::>
page 291.
When should I adjust the tire pressures?
Adjust the ti re pressur e to the load you are carrying. A fter chang in g
a wheel
or replacing whee ls you have to adj ust t he t ire pressure s on
a ll whee ls. In addition, o n ve hicles w ith t ire pressure monito ring
system * you must then store the new tire pressures in the system
=> page 41.
& WARNING
Incorrect tire pres sures and /or underinflation can lead sudden tire
failure, loss of control , collision, serious personal injury or even
death .
• When the warning symbol ( appears in the instrument
cluster , stop and inspect the tires .
• Incorrect tire pressure and /or underinflation can cause
increased tire wear and can affe ct the handling of the vehicle and
stopping ability .
• Incorre ct tire pressures and /or underinflat ion can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehi cle control.
• The driver is responsible for the correct tire pressures for all
tires on the vehicle . The appli cable pre ssure values are located on
a sticker on the driver 's side 8-pillar or on the inside of the fuel
filler flap .
& WARNING (continued )
• Only when all tires on the veh icle are filled to the correct pres­
s ure, the tire pressure monitoring system * can work correctly .
• The use of incorrect tire pressure values can lead to accidents
or other damage . Therefore it is essential that the driver observe
the specified tire pressure values for the tires and the correct pres­
sures for the function of the tire pressure monitoring system*.
• Alway s inflate tires to the recommended and corre ct tire pres ­
sure before driving off.
• Driving with underinflated tires bend more , letting them get
too hot resulting in tread separation , sudden tire failure and loss
of control.
• Excessive speed and /overloading can cause he at build -up ,
sudden tire failure and loss of control.
• If the tire pressure is too low or too high , the tires will wear
prematurely and the vehicle will not handle well.
• If the tire is not flat and you do not have to change a wheel
immediately, drive at reduced speed to the nearest service station
to che ck the tire pressure and add air as required .
0 Note
Driving without valve stem caps can cause damage to the tire
valves. To p revent this, a lways make sure tha t factory installe d va lve
stem caps on al l wheels are securely mounted on the va lve .
<£> For the sake of the environment
Underinflated tires wi ll a lso increase the fue l consumption. •
Tires and vehicle load limits
There are limits to the amount of load or weight that any vehic le and
any tire can carry. A vehicle that is overloa ded wil l n o t handle well _,.
Vehic le care