2009 AUDI S4 CABRIOLET ESP

Airbag system . . . . . . . . . . . . . . . . . 168 Trailer to\Ning . . . . . . . . . . . . . . . . . . 224
Important things to know . . . . . . . 168 Driv ing with a trailer . . . . . . . . . . . . 224
Front airbags . . . . . . . . . . . . . . . . . . 172 Trailer towing tips . . . . . . . . . . . . . . 226
Monitoring the Advanced Airbag
System . . . . . . . . . . . . . . . . . . . . . . .
179
Knee airbags . . . . . . . . . . . . . . . . . . 184
Side a irbags . . . . . . . • . . . . . . . . . . . 187
Child Safety . . . . . . . . . . . . . . . . . . . . 190
Impor tant things to know . ..... .
Child safety seats ............. .
Insta lling a chi ld safety seat .... . 190
195
200
Add it ional Information ....... .. . 203 Vehicle care . . . . . . . . . . . . . . . 229
Lower anchorages and tethe r for
children (LA TCH) . .. ... ... ... ... .
205 Cleaning and protection . . . . . . . 230
~----
t
Vehicle operation .... ... . 211
212
212
2 12
215
Intelligent
technology ... ... ... .
Notice about data recorded by
ve hicle contro l modules .. ..... .
Electronic Stabilization Program
(ESPJ . .... ... ......... ... ... .. .
B rak ing ..... ... .... .... ... ... .
Servotronic® -advanced power
steering system ............... .
Driving with your quattro® ..... .
Driving and environment .... . . 217
2
18
2 19
The first 1,000 miles (1,500 km) and
afterwards . . . . . . . . . . . . . . . . . . . .
21 9
Catalytic converter . . . . . . . . . . . . .
220
Avoid damaging the ve hicle . . . . . 221
Operate your vehicle economically
and minimize pollution . . . . . . . . .
221
General information ........... .
Care of exterior ................ .
Care of inte rior ...... .... ... ... .
Fue l supply and filling your fuel
tank ........................... .
Gasoline ........... ........... .
Fuel tank ..................... .
Checking and filling .. ... ...... .
Engine hood ......... ......... .
Engine compartment ...... ... . .
Engine oil ..................... .
Engine cooling system ......... .
Brake fluid ................ ... . .
Battery . ... ... ... ............. .
W indshield /headligh t washer
rese rvoir ...................... .
Tires and \Nheels .......... .... .
Tires ..... .. ..... ... .. - . -.. • · · ·
230
230
238
244
244
245
249
249
251
252
257
260
261
266
267
267
Table of contents
Do-it-yourself service ... 289
What do I do no\N? . . . . . . . . . . . . . 290
Trunk escape ha ndle . . . . . . . . . . . . 290
Jack, tools and spare wheel . . . . . . 290
Whee l change .............. .... 293
Fuses and bulbs . . . . . . . . . . . . . . . . 300
Fus es ................. ......... 300
Bulbs .......................... 302
Emergency situations . . . . . . . . . . 304
Genera l ... .. ... .... _ .. _ ...... .. 304
Starting by pushing or towing . . . . 304
Starting with jumper cables . . . . . . 304
Use of jumpe r cables . . . . . . . . . . . . 305
Em ergency towing with commercial
tow truck ... ......... ....... .. .
Lifting vehicle ................. .
Technical data
General information 306
308
311
312
Explanation
of technical data 312
Vehic le ide ntific ation . . . . . . . . . . . . 312
Weights ........................ 313
Dimensio ns . . . . . . . . . . . . . . . . . . . . 313
~ehicle care irechnical data

About this Owner's Manu al
About this Owner's Manual
This owner's manua l contains important information, tips, sugges ­
tions, and warnings for the use of your vehicle.
Make sure that this owner's manual is always located in the vehicle .
This is especially important if you allow other people to drive the
veh ic le, or if you sell it .
T his owner's manua l describes the
equipment range specified for
t his model at the editoria l deadline date . Some of the equipment
described here will only be available at a later date, or on ly in
specific markets.
Some sect ions in this owner's manual do not apply to all vehicles.
I n that case, the
range of appl icability is given at the beginning of
t he sect io n, e.g . "Applies to veh icles : with Audi Parking System". In
addition, optional equipment is indicat ed by an asterisk"* ".
T he deta ils in the
illu strations may be diffe ren t from those in your
veh ic le, and are intended to be viewed as a basic guide .
You wil l find a
table of contents at the beginning of this book, which
d isplays all top ics descr ibed in this manua l in order of appearance .
You wil l find an a lphabetical
inde x at the end of this book.
A ll
directions , such as "left", "righ t", "front", "back", are re lative to
the d irection of trave l.
* optiona l equipment
.,. This section continues on the next page .
a Indicates the end of a section .
® Registered tradema rks are identified with a®. If this symbol is
m issing, it is no guaran tee that the terms can be used freely.
=> & Cross -reference to a "WARNING!" within a section . For indi ­
cat ion with a page number, the corresponding "WAR NIN G!" can be
found outside of the section .
& WARNING
Text with thi s symbol conta ins important information on safety
and how to reduce the risk of per sonal injury or death .
0 Note
Text with this symbol draws your at te nt ion to potent ial sources of
damage to your vehic le.
<£' For the sake of the environment
Te xt with this symbol contains information about the environ ment
and how you can he lp protect it.
[ i ] Tips
Text with this symbol contains specia l tips and other information
about getting the most out o f your vehicle and i ts features .•

Instruments and controls
General illustration
G)
0
©
©
©
©
0
©
G)
Power window switches
Door handle
Power locking switch . ..... .. .... .... .... ...... .
Adjuster control for outside mirrors .............. .
Air outlets ...... .. ......... .... .. .. .... .. ..... .
Light switch .. ...... .... ...... .... ... .. .... ... .
Turn signal and high beam .. .... .... ..... ...... .
Instrument cluster ... ...... ... .. ..... ... .... ... .
Switches for
- Windshield wiper/washer ......... ...... ...... .
- Driver information display ........... .... ..... .
- Operation trip computer .. .... ... .... .... .. ... .
- Adjusting and storing the tire pressure" ........ .
@ Steering lock/ignition/starter switch ....... .... ... .
@ Depending on options :
@
@
@
@
@
@
@
@
@
@
@
-Electronic Stabi lization Program (ESP) switch .....
- Warning light for deactivated front passenger airbag
Emergency flasher . ...... ...... .... ... .. ... .... .
Storage compartment for sma ll objects
Sound System
Glove compartment ( lockable) . .... .... .... .... .. .
Front passenger airbag ........................ . .
Climate controls ........ ... .... .... .... .. ..... .
Rear window defogger switch .......... ..... ... .
Switch for seat heating . .... .. .... .. ... .. .... ... .
Ashtray .. ....... .... ... .... .... .... .... .... .. .
Se lector lever (automatic transmission) ....... ... . .
Parking brake lever ....... .. ... ... .. ...... .... . .
Controls and equip ­
ment
59
54
89
115
76
83
12
85
36,37
38
43
119
212
82
108
107
172
111
116
116
104
131
121
Instruments and controls
@ Cupholder ............ ...... ... .. .... ..... .. .. .
@ Power top switch .............................. .
@) Power outlet . .... ...... ... .. .... .... .... .... .. .
@ Memory buttons (driver seat) .. .... .... .... .... .. .
@ Release lever for the engine hood .............. .. .
@ Coming home/leaving home activation ...... ...... .
@ Cruise control .... .... .... .... ... ........ .... .. .
@ Steering wheel with :
- Horn
- Driver airbag .... .... .... ... .. ...... .... .... . .
@ Adjustable steering column ..................... .
[ i ] Tips
A separate brochure is provided for your factory-insta lled audio
system and/or the Audi Navigation System. •
104
61
106
101
249
80
123
172
118

CRUISE
ti(')
~
i::::3
D
BRAKE

Q
Controls and equip­
ment
Tire pressure monitoring system*
USA models:
Cruise control activated
Canada models:
Cruise control activated
USA models:
Anti-lock brake system (ABS)
Canada models:
Anti -lock brake system (ABS)
Safety belt Power top operation
Left turn signal
Electronic stabilization program
(ESP)
Generator
High beam
Electronic power control
USA models:
Brake system, parking brake set
Canada models: Brake system, parking brake set
Right turn signal
~ page 20
~ page20
~ page20
~ page20
~ page20
~ page 21
~ page21
~ page 27
~ page22
~ page22
~ page22
~ page22
~ page23
~ page23
~ page21
Instruments and warning/indicator lights
& WARNING
• Failure to heed warning lights and other important vehicle
information may result in serious personal injury or vehicle
damage .
• Whenever stalled or stopped for repair, move the vehicle a safe
distance off the road, stop the engine, and turn on the emergency
flasher
~ page 82.
• The engine compartment of any motor vehicle is a potentially
hazardous area. Before you check anything in the engine compart­
ment, stop the engine and let it cool down . Always exercise
extreme caution when working under the engine hood
~ page 242, "Engine compartment" .
[ i] Tips
Many functions are monitored by the Auto-Check system
~ page 28. Malfunctions or faults will be identified either with a red
symbol (priority 1 -Danger!) or with a yellow symbol (priority 2 -
Warning) .•
Malfunction Indicator Lamp (MIL)
L.i (USA models)/ (Canada models)
The Malfunction Indicator Lamp (MIU is part of the On-Board Diag­
nos tic (OBD Ill system. The symbol,.. lights up when the ignition is
turned on and will turn off after the engine has started and has
settled at constant idle speed . This indicates that the MIL is wo rking
properly.
The warning light illuminates when there is a malfunction in the
engine electronic syst em . Contact your authori zed Audi d ealer and
have the malfunction corrected.
For more information
~ page 27 . •

Instruments and warning/indicator lights
Airbag system ~
This warning/indicator light monitors the airbag and the
tensioner systems.
The GA warning light illuminates for a few seconds each time you
switch on the ignition.
If the
ffl warning light does not go out, or if it illuminates while you
are driving, or if it starts to flash, then there is a malfunction some ­
where in the system. If the light does not illuminate when you
switch on the ignition, this also means there is a malfunction.
& WARNING
If you have a malfunction in the airbag system, contact your autho­
rized Audi dealer immediately. Otherwise the airbag or the belt
tensioner may not work properly in an accident. •
Tire pressure monitoring system -telltale
indicator lamp
D
The warning/indicator light appears in the event of a
significant loss of air pressure.
The warning/indicator light illuminates for a few seconds after
the ignition is turned on as function check and then goes out.
If the ( symbol appears, pressure is too low in at least one tire.
When the system detects a malfunction, the warning/indicator light
will flash for approximately one minute and then remain continu­
ously illuminated. This sequence will continue upon subsequent
vehicle starts up as long as the malfunction exists. Contact your
authorized Audi dealer and have the malfunction corrected.
For more information
=> page 43. •
Cruise control
CRUISE (USA models) / •0 (Canada models)
The CRU ISE warning/indicator light illuminates when the cruise
control is activated. •
Anti-lock brake system
(USA models) / (Canada models)
This warning/indicator light monitors the ABS and the
electronic differential lock (EDL).
The A S warning light will come on for a few seconds when the igni­
tion is switched on. The light will go out after an automatic check
sequence is completed.
There is a malfunction in the ABS when:
• the warning/indicator light does not illuminate when you switch
on the ignition.
• the warning/indicator light does not go out after a few seconds.
• the warning/indicator light illuminates while driving.
Without the electronic assistance of the ABS, the brake system will
still respond and brake the car. Have the brake system checked and
restored to its full performance by an authorized Audi dealer as
soon as possible.
For more information regarding the ABS see
=> page 216.
Since any malfunction of the ABS also affects the ESP, that system's
warning symbol.,
=> page 22 will light up along with the n /
(Canada models) warning light.
Unspecific malfunction in the brake system
If both the brake warning light=> page 23 and the c.., warning light
illuminate when the parking brake is released, the likely cause is a
serious malfunction in the brake system beyond an inoperative ABS
=> & . ~

If an unspecific defect in the brake system is indicated, the entire
b rake system is likely to be a ffec ted a nd y ou mus t ex pec t degra ded
brake response and performance .
Since any malfunction of the ABS also effects the ESP, that system's
w arning symbol
=> page 22 w ill light up alo ng w ith t he ->-1 t
(Canada models) warning light.
Malfun ction in the electronic diff erential lock
(EDL)
The two systems E DL and ABS inte ract. For this reason the ,t.
warning light/ 3 (Canada mode ls) wi ll come on to indicate a
malfunction in the EDL system~
page 213. See your authorized
Aud i deale r as soo n as poss ib le.
& WARNING
• If the ,.r;_/ :· (Canada models) warning light does not go out ,
or if it comes on while driving, the ABS system is not working
properly . The vehicle can then be stopped only with the brakes
operating without ABS support . You will not have the protection
ABS provides. Contact your Audi dealer as soon as pos sible.
• USA models : If both the BRAKE warning light and the "
warning light come on at the same time , the rear wheels could
lock up first under hard braking. Rear wheel brake lock-up can
cau se loss of vehicle control and an a ccident. Have your vehicle
repaired immediately by your author ized Aud i dealer or a qualified
work shop. Drive slowly and avoid sudden , hard brake application.
• Canada models : If both the brake warn ing light ((j)) and the ABS
warning light come on at the same time , the rear wheels could
loc k up first under hard braking . Rea r wheel brake lock-up can
cause loss of vehicle control and an accident. Have your vehicle
repaired immediately by your authorized Audi dealer or a qualified
workshop. Drive slowly and avoid sudden, hard brake
application . •
Controls and equip ­
ment
Instrum ents and warning /indi cator lights
Power top.--·
Th e w arning/i ndicator lig ht m oni tors the power top fu n c­
tion .
The warning/indicator light illuminates when you switch on the
i gni tion f or about 2 seconds as a c heck a nd the n goes out . T he
warning/indicator light has the follow ing functions:
• The ligh t illu mina tes whe n the power top opens or c loses.
• T he light also illuminates if one of the requirements for powe r
t o p o per ation is not m et when the swi tc h i s ope rate d. In th is case
the instrument c luster display also shows a corresponding message
=> pag e 64, "M essage s in th e ins trum ent clus ter d isplay" .
• T he light illuminates when the power top is opened or c losed
inco mple tely. •
Saf ety belts i
Th is warn ing/i ndic ator l ight re minds you to p ut o n you r
s af ety b elt.
The ~ wa rning/ ind icator lig ht illum inates when the i gni tion is
switched on to remind the driver and (on USA models on ly) any front
p ass enge r to put on t he sa fety belt. A ddi tionally, a n acous tic
warning (gong ) will also sound .
F o r m ore Infor mati on =>
page 159, "Safe ty belt wa rning l ig ht ,(,.". •
Turn signals ¢ ¢
The indic ator l ight flas hes whe n you use either turn
si gnal.
When eve r y ou u se th e left ¢i o r the right 9 tu rn signa l, the indicato r
light flashes. When you use the emergency flasher, both ind icator
l ig ht s flas h. ...

Inst rum ents and warnin g/indi cato r li ghts
If one of the turn signal light bulbs burn out, the turn signal will
flash twice as fast as normal. •
Electronic Stabilization Program (ESP)
The warning/indicator light monitors the electronic stabi­
lization program.
The warning/indicator light has the following functions :
• it flashes while you are driving , when the ESP is working .
• it illuminates when you switch on the ignition for approximately
2 seconds as a function check .
• it illuminates when there is a ma lfunction in the ESP.
• it illuminates after the battery has been disconnected.
• it illuminates continuous ly when the ESP is switched off.
• it illuminates if there is a malfunction in the ABS, since the ESP
is part of the ABS system.
If the ESP warning/indicator light i lluminates and stays on after you
have started the engine , this may mean that the control system has
temporari ly switched off the ESP. If this is case, you can reactivate
the ESP by switching the ignition o ff and then on again. The
warning/indicator light should go out to show that the system is
fully functional again.
If the battery terminals were disconnected and re-connected, the
vehic le was jump started or the battery is very weak, the ESP sensor
system goes through a learning process for the first few yards.
During this time, the indicator light illuminates. It goes out as soon
as the learning process is comp lete .
For more information about the ESP~
page 22. •
Generator 0
T his warning/indicator light detects a malfunction in the
generator or in the vehicle's electrical system .
The D warning/indicator light illuminates when you switch on the
ign itio n and must go out after the engine has started.
If the
D warning/indicator light illuminates while you are driving,
you shou ld contact your authorized Audi dealer . Since the vehicle
battery is discharging, you should switch off any unnecessary elec ­
trical consumers (for example, the air conditioner) .
0 Note
If the -t warning/indicator light (ma lfunction in the engine coo ling
system) in the instrument cluster shou ld illuminate~
page 31, stop
the vehicle and turn off the engine. The coo lant pump is not working
- this can cause engine damage! •
High beam ~D
The@:Dwarning/indicator light illuminates when the high beams are
on or when you use the headlight flasher. For more information
about using the high beams, see~
page 83. •
Electronic power control p
This warning/indi cator light monitors the electronic
power control.
The warning/indicator light (Electronic Power Control) il lumi-
nates when you switch on the ignition as a function check .

[ i] Tips
If this warning/indicator light illuminates while you are driving, then
there is a malfunction in the engine electronics. Have the malfunc ­
tion corrected as soon as possible by your authorized Audi dealer or qualified workshop. •
Brake system BRAKE (USA models)/ (CD)
(Canada models)
This warning/indicator light illuminates when the brake
fluid level is too low or when there is a malfunction in the
ABS, or when the parking brake is set.
The light illuminates when the ignition is turned on. It goes out after
the engine has been started and the parking brake is fully released.
This indicates that the brake warning light is functioning properly.
If the brake warning light does not light up when the engine is
cranking or the parking brake is applied, there may be a malfunction
in the electrical system. In this case, contact your Audi dealer.
(USA models): If the warning light BRAKE and the warning light
illuminate together, immediately contact your authorized Audi
dealer or qualified workshop to have all brake pads inspected
=:> page 33.
When the light comes on, an audible warning signal is also given.
Parking brake set
The BRAKE or ((D) (Canada) warning/indicator light illuminates when
the parking brake is set=:>& .
& WARNING
• USA models: If the BRAKE warning light and the . J'l warning
light come on together, the rear wheels could lock up first under
hard braking. Rear wheel lock-up can cause loss of vehicle control
Controls and equip ­
ment
Instruments and warning/indicator lights
& WARNING (continued)
and an accident. Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models: If the brake warning light (CD) and the ABS
warning light _. come on together, the rear wheels could lock up
first under hard braking. Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme­
diately by your authorized Audi dealer or a qualified workshop.
Drive slowly and avoid sudden, hard brake applications.
• If the brake warning/indicator light does not go out after a few
seconds and the parking brake released, or lights up while you are
driving, the fluid level in the brake fluid reservoir is too low. If you
believe that it is safe to do so, proceed immediately at low speed
to the nearest authorized Audi dealer or qualified repair facility
and have the brake system inspected .
• Always keep in mind that after several brake applications, you
will need greater pressure on the brake pedal to stop your vehicle.
Do not rely on strained brakes to respond with maximum stopping
power in critical situations . You must allow for increased braking
distances. The extra distance used up by fading brakes could lead
to an accident. •