2009 AUDI A4 CABRIOLET Owners Manual

_______________________________________________ C _o_ n _ s_u _ m_ e_ r_l_n _f_o _ r_ m_ a_ t _i _o _ n __ llll
& WA RNIN G (cont in u ed)
me nt zone s. Do ing so will in cre ase the r isk of injury if airb ags are
trig gered in an accident!
• Before you che ck anyt hing in the eng ine comp artment , al ways
re ad and heed all WARN IN GS =>
page 242.
0 Note
• If items other than genuine Audi spare parts, add-on equipment
and accessory items are used or if repair work is not performed
according to specified methods, this can resu lt in severe damage to
your vehicle 's engine and body (such as corrosion) and adverse ly
affect your vehicle's wa rra nty .
• If emergency repairs must be performed elsewhere, have the
vehic le examined by an authorized Audi dea lership as soon as
possible .
• The manufacturer cannot be held liable for damage which occurs
due to failure to comply with these stipulations. •
Installing/replacing a sound system
If you wish to install a radio or replace the factory installed radio,
p lease note the following:
The factory insta lled radio connectors are designed for genuine
Audi radios. When installing a different radio, difficu lties co uld arise
such as:
- the radio may not fit into the space provided
- the electrical connections may not be compatible
- different connector terminals may be needed .
Therefore, we recommend that you have your authorized Audi dea ler instal l or rep lace the radio.
Controls . and equip­
ment . Safety first Vehicle operation They are the most fami
liar with the technical features of your
vehicle . They also offer Genuine Audi Radios wi th the necessary
insta llation components and instructions .
& WARNING
Improperly in sta ll ing a r adio co u ld cau se a short circu it and an
el ect rical fire. •
Technical Modifications
Our guidelines must be complied with when technical
modifications are made.
A lways consult an authorized Audi dealer before starting work on
any modifications .
This w ill help ensure that vehic le function, performance and safety
are not impaired=> &-
Attempting to work on electronic components and the software used with them can cause malfunctions. Because of the way elec ­
tronic components are interconnected with each other, such
malfunctions can also have an adverse affect on other systems that
are not directly involved . This means that you risk both a substantial
reduct ion in the operat ional safety of your vehicle and an increased
wear of vehicle parts=>&.
Authorized Audi deale rs wi ll perform this work in a professional and
competent manner or, in special cases, refer you to a professional
company that specializes in such modifications .
& WARNING
Improper repair s and modifica tion s ca n change the way vehi cle
sy stems work and cause serio us per sonal injur y.
IIJi,
Vehicle care Do-it-yourself service Tec hn ica l da ta

___ C_ o_n_ s_ u_m _ e_ r_ ln_ f_ o _r _m _ a_ t_ i_o _n ______________________________________________ _
0 Note
If emergency repairs must be performed elsewhere, have the
vehic le examined by an authorized Audi dealership as soon as
possible .•
Declaration of Compliance,
Telecommunications and Electronic Systems
Rad io Frequency Devices an d Rad ioc ommunic ation
Equipment User Man ual N otic e.
T he manufacturer is not responsib le for any radio or TV interference
cause d by unauthorized mod ifications to this equipment .
Devic es
The fol lowing dev ices eac h comply with FCC Part 1 5.19, FCC Part
15.21 and RSS -Gen Issue 1:
• Cell phone package
• Electronic immobi lizer
• Homelink® unive rsal remote contr ol
• Remote control key
• T ire pressure monitoring system
FCC Part 15 .1 9
This device complies with part 15 of the FCC Rules. Operation is
subject to the fo llowing two cond itions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, inc luding
interference that may cause undesired ope ra tion .
FCC Part 15 .21
CAUT IO N: Changes or modifications not expressly approved by the party
responsible for complia
nce cou ld void the user's au thority to
operate the equipment.
RSS -Gen Is sue 1
Operation is subject to the following two conditions :
(1) th is device may not cause interference, and
(2) this device must accept any interference, including interference
that may cause undesired operation of the device. •

Consumer Information -_______________ ___,
Controls and equip­
ment Safety first
Vehicle operation Vehicle care Do-it-yourself service Tec hn ica l da ta

Alphabetical index

llffl __ A_l-=- p _h_ a_ b_e _t_ic _ a_l _in _ d_e _x ____________________________________________ _
A
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 318
Acoustic park assist . . . . . . . . . . . . . . . . . 122
Adaptive Light Air outlets
Climate controls .. .... ...... ..... 115
How should I adjus t the air outlets to de­
frost my windows as quickly as
possible? . . . . . . . . . . . . . . . . . . . . . . 115 Warning/indicator lights
... ... .... .. 20
When must the system be inspected? . ..
179
All Wheel Drive ... .... .... ...... .... 218
Alloy wheels . . . . . . . . . . . . . . . . . . . . . . . 237
defective ............. ........ .. . 34 Air quality sensor .
.... .... .... .... .. 114 All-whee l drive
adaptive light .. ... .... .... ... ...... . 79 Air recirculation
............... ..... 113
Winter tires .. ......... .... .... .. 284
Adding Engine coolant ... .... .... ...... .
259
Engine oi l ..... .... ... .... .... .. .
255
Windshield washer fluid .... .... . .
266
Additiona l accessories .. ...... ...... . 318
Additives Engine oil . ..... .. ..... ... ...... . 255
Adjusting Instrument cluster illumination .. .... 15
Steering wheel co lumn .... ... .... 118
Adjusting the seats
Manual seats ...... .... ........... 94
Advanced Airbag System . . . . . . . . . . . . 172
Children ... ........... .... ... ... 191
Components ...... .... .......... 175
Front airbags . . . . . . . . . . . . . . . . . . . . 173
How the components work together 176
Monitoring . . . . . . . . . . . . . . . . . . . . . . 179
Weight -sensing mat . .... ... .. .... 191
Air conditioning
See Climate controls . . . . . . . . . . . . . . 110
Air distribution Clima te con trols ... .... ... .... ... 114 Climate controls
...... ...... ... .. 114 Alternator
When should I use the air recircu lation?
114
Air ventilation in the glove compartment ...
108
Airbag system ..... ... .... ..... . 168, 188
Care ... ... .... .... .... .... .... .. 182
Child restraints .............. .... 192
Components (front airbags) .. ... ... 175
Danger of fitting a child safety seat on the
front passenger seat . . . . . . . . . . . . 170
Disposal . . . . . . . . . . . . . . . . . . . . . . . . 182
Front airbags . ....... ..... .... ... 172
How do the front airbags work? . . . . 177
How many airbags does my vehicle have? 175
Important safety instructions on the knee
airbag system .... .... .... .... .. 186
Important things to know ... .... .. 168
Indicator light ... .......... ... ... 179
Knee airbags .... . .. .. ........... 184
Monitoring .... .... .... .... .... .. 179
PASSENGER AIR BAG OFF light ..... 180
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . 182
Side airbags . . . . . . . . . . . . . . . . . . . . . 187
See Generator . . . . . . . . . . . . . . . . . . . . 22
Anti -freeze
S ee Engine coolant system .. ...... 257
Anti-glare inside day-night mirror ...... 88
Anti-lock brake system How the ABS system works . .... ... 216
Warning/indicator lights ........... . 20
An ti- Slip Regulation System (ASR)
How the sys tem works .. ... .... ... 214
Anti-Theft Alarm System Tilt sensors ..... ....... ..... ...... 58
Anti-theft alarm system .. .. .. .... .... . 57
Anti -theft systems
Electronic immobilizer ......... .... 49
Armrest Adjusting ...... .... ..... .. ..... . 100
Storage bin
Ashtray 100
Front ....... .................... 104
Rear .......... .... .... ........ .. 105
Asterisk What does it mean when something is marked with an asterisk? . ..... ... .. 6
Audi Service Repair Manuals and Literature 316

Alph ab eti ca l ind ex -
-------------=----
AUTO
Climate controls .. ...... ..... .... . 112
Switching on .... .... .... .... .... 112
When should I use AUTO? ....... .. 112
Auto Safety Hotl ine .. ..... ... ... .... . 155
Auto-Check Control .. ... ... .... ... .. .. 28
Automat ic air recirculation ........... 114
Automatic belt retractor .... ...... .... 163
Automatic car wash
See Washing .. .... .... ... ...... .. 231
Automatic headlight con trol ....... .... 77
Automatic rollover protection system . . 156
Automatic Shift Lock (ASLl ....... 128, 135
Automatic transm ission
6 -spe ed automatic transmission .... 126
Automatic Shi ft Lock (ASLl .... . 128, 135
Driving ........ ..... ....... ..... 126
Dynamic shif t prog ram ... .... .... . 129
Fail-safe mode ... ...... ........ .. 13 1
Ignition key safety lock ... ... ... .. . 119
Kick-down ... .... .... .... ... .... . 129
Manual sh ift program . ... .... .... . 130
multitronic® ... ... ... .... ... ..... 131
Se lector lever ..... .... ...... . 127, 133
Shift but tons . ... .... .... .... 131, 137
Steering wheel with tiptronic® . 131,137
Average speed ... ... ... ... .. ...... ... 37
Avoid damaging the v ehicle .. ... .... . 22 1
Controls and equip­
ment Safety first
B
Battery .
.... .... ...... .... ... .. 261, 264
Charging ...... .. ... ..... .. .. .... 265
Checking battery acid level . .... .... 264
Important warnings when working on the batte ry . .......... .... ... .. ... . 263
Low vol tage symbo l .. ....... .... ... 34
Replacing the battery . ...... .. .... 262
Winter opera tion ... .. ...... ...... 261
Working on the battery .......... .. 263
B efore driving ... ..... .. ...... ...... 146
Blended gasoline ... ... .. .. .. .... .... 244
Body cavity sealing .. .. .. ...... .... .. 237
Boos ter seats .... .... .... .... .... ... 198
How do I properly instal l a booster seat in
my vehicle? . .......... ...... ... 198
Sa fety instructions . .... .... .... ... 198
Brake f luid
Changing the brake fluid .......... 261
Checking the brake fluid leve l .. .... 260
Reservoir . ... .... .... ....... .... . 260
What is the correct brake fluid level? 260
What shou ld I do if the brake fluid warning
light comes on? . ..... ... .... .... 260
Brake system .. ...... .... .... .... ... 260
An ti- lo ck brake system (ABS) ... .... . 20
Brake ass istant . .... .. .... .... ... . 217
Brake booster .... .... .... .... .... 216
Brake flu id .... ... .... .... .... .... 260
Brake f luid specifications for refi ll and
rep lacement . ... ..... ... .... .... 261
Brake pads ...... .... .... .... .... 220
Genera l informa tion ....... .. .... . 215 How does the moisture or road salt affect
the brakes? ....... ... .... .... ... 215
Ma lfunction ... .. .... .... .... .. .. . 30
Warning/indicator lights .. .. .... .... 23
Worn brake pads symbol . ..... .. .. . 33
B reak -in period ...... .... .... .... ... 219
B rake pads ... .... .... .. . .... .... 220
Tires ..... .... .... .... ... .... .. .. 219
Bu lbs ... ... .... ... ... ... .... ...... . 302
C
California Proposition 65 Warning . .... 251
Battery specific ..... ...... .... .... 264
Capacities Eng ine oil .... .... .... ... .... .... 31 4
Fuel tank ..... ...... .. ...... .... . 314
Windshield washer fluid ... .... .... 314
Car care ... .. .... ... .... .... .... .. .. 230
Interior ... .... .... .... ... .... .... 238
Plastic and v inyl .... ... .... .... ... 234
Weatherstr ips . .... .... .... ...... . 236
Care of exterior ..... .... .... .... .. .. 230
Cargo area
See Loading the luggage compartment .
153
Catalytic converter .. ...... ...... .... 220
Centigrade Switching between Centig rade and
Fahrenheit ...... .... .. .. ... .. .. 11 3
Certification . ............ ...... .... . 320
Changing a flat tire ....... ... .... .. .. 293
Chan ging a wheel .... .... ... .... .... 293
Vehicle operation Vehicle care Do-it-yourself service Technical data

ll'JI Alphabetical index _ __,__ ___ ____;_...::.:...::... ___________________________ _
Changing engine oil ...... ... ... .. ... 256
Chassis Undercoating ........ ...... .... .. 237
CHECK button . . . . . . . . . . . . . . . . . . . . . . . 16
Checking Battery acid level . . . . . . . . . . . . . . . . . 264
Engine coolant level .. ............ 258
Checking tire pressure ............... 274
Child restraint Danger of using child restraints in the
front seat . . . . . . . . . . . . . . . . . . . . . . 170
Child restraints What types of chi ld restraint anchors are
available? ..................... 203
Where can I get additional information
about child restraints? ... .... .... 204
Child safety .. ........ ....... ... 190, 195
Booster seats . . . . . . . . . . . . . . . . . . . . 198
Convertible child safety seats . . . . . . 196
Convertible locking retractor . . . . . . . 200
Guidance fixtures for lower anchorages 206
Important safety instructions for using
child safety seats .. ...... ....... 193
Important things to know when driving
with chi ldren ............. ...... 190
Infant seats . . . . . . . . . . . . . . . . . . . . . 195
Installing a child restraint using the
LATCH system .... ... .... ...... . 208
Lower anchorages .... .... ... ... . 205
Mounting and releasing the anchorage
hook ...... ...... .... .......... 209
O lder children and safety belts ... .. 199 Safety belts and oldler children
... .. 199
Which restraint system should my older chi ld wear? ........ .... ... .. ... 199
child safety seat LATCH system . .... .... .... ...... 208
Childsafetyseats .... ........ .... ... 195
Convertible locking retractor .... ... 200
How do I properly install a child safety seat in my vehicle? .. ...... .... .. 193
Installing .... .... ... .. .... .... .. 200
Safety instructions .............. .
Cigarette lighter .......... .... ..... .
Cleaning Alcantara (synthetic suede) ....... .
E . ngine compartment . .... ... .. .. .
Fabrics and fabric coverings ... ... .
Instrument panel ....... .... ..... . 193
105
241
242
238
239
I . ntenor ......................... 238
Leather .... ...... ... .. .... ...... 240
Plastic and vinyl . .... .... ... .. ... 234
P lastic parts ........... .... ... ... 239
Safety be lts ...... ............ ... 242
Trim strips ............. ... .... .. 234
trim strips ... .. ...... .... ..... ... 235
Cleaning and protection .......... ... 230
Climate controls .. .... ......... ..... 11
O
Air distribution . . . . . . . . . . . . . . . . . . 114
Air outlets . . . . . . . . . . . . . . . . . . . . . . . 115
Air recirculation .... .... .... .... .. 113
AUTO (standard setting) .... .... ... 112
Automatic air recirculation ... .. ... 114
Contro ls . . . . . . . . . . . . . . . . . . . . . . . . 111
Defrosting / Defogging . . . . . . . . . . . . 116
Description . . . . . . . . . . . . . . . . . . . . . . 11
O
ECON ... .. .. .. .... .... ..... .. ... 113
Fan .. ............ .... ... .... ... 114
Key coded setting ................ 11
O
Recommended settings ........... 11 O
Setting the temperature ........... 112
Switching between Fahrenheit and Centigrade ... .... .... ...... .... 113
Switching the air conditioning on or off .
113
Using the climate control economically . .
116
Warm and cold .................. 110
Clock .. ........... ........... .... ... 14
Closing Power top . . . . . . . . . . . . . . . . . . . . . . . . 62
Cold tire inflation pressure .. .... ..... 271
Coming -home -function .. ............. 80
Compartments in the door trims ... ... 109
Compass mirror .. .... ...... ... ..... . 90
Comp liance .......... ....... .... ... 320
Consumer Information ........... 155, 316
Contacting NHTSA .................. 155
Continuously Variable Transmission (CVT)
See multitronic® ........ ... ...... 131
Convenience close/open feature Power top . . . . . . . . . . . . . . . . . . . . . . . . 63
Windows ......................... 53
Convertible child seats How do I properly install a convertib le
chi ld seat in my vehic le? ...... ... 196
Safety instructions .. ...... .... ... 196