2009 AUDI A4 CABRIOLET open gas tank

Fuel supply and filling your fuel tank
Fuel supply and filling your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environment clean and
prevents engine damage.
Fuel recommendation
Th e fuel recommended for your vehicle is unleaded premium grade
gasoline. See also=>
page 314, "Data". Audi recommends using TOP
TIER Detergent Gasoline with a minimum octane rating of 91 AKI (95
RON). For more information on TOP TIER Detergent Gasoline, please
go to the official website (www .toptiergas.coml.
The recommended gasoline octane rating for your engine can also be found on a label located either on the driver's side B-pillar (visible
when the door is open) or inside the fuel filler flap. This rating may
be specified as AKI or RON.
Your vehicle may also be operated using unleaded regular gasoline
with a minimum octane rating of 87 AKl/91 RON. However, using 87
AKl/91 RON octane fuel will slightly reduce engine performance.
Use unleaded gasoline only. Unleaded gasoline is available
throughout the USA, Canada, and in most European countries. We
recommend that you do not take your vehicle to areas or countries
where unleaded gasoline may not be available.
For more information on refueling your vehicle, see=>
page 245.
Octane rating
Octane rating indicates a gasoline's ability to resist engine
damaging "knock" caused by premature ignition and detonation.
The refore, buying the correct grade of gasoline is very important to
help prevent possible engine damage and a loss of engine perfor ­
mance. Gasoline most commonly used
in the United States and Canada has
the following octane ratings that can usually be found on the filler
pump:
• Pr emium Grade: 91 -96 AKI
• Regular Grade: 87 -90 AKI
Explanation of the abbreviations:
AKI = Anti Kno ck Ind ex= (R+Ml/2 = (RON+MON)/2
RON= Research Octane Number
MON = Motor Octane Number .
0 Note
• Do not use any fuel with octane ratings lower than 87 AKI or 91
RON otherwise expensive engine damage will occur .
• Do
not use leaded gasoline. The use of leaded gasoline will
severely damage your vehicle's catalytic converter and its ability to
control exhaust emissions. •
Blended gasoline
Use of gasoline containing alcohol or MTBE (methyl
tertiary butyl ether)
You may use unleaded gasoline blended with alcohol or MTBE (commonly referred to as oxygenates) if the blended mixture meets
the following criteria:
Blend of gasoline methanol (wood alcohol or methyl alcohol)
• Anti-knock index must be 87 AKI or higher.
• Blend must contain no more than 3% methanol.
• Blend must contain more than 2% co-solvents.

•
Ble nd o f gas oline and eth ano l (gr ain al coh ol o r eth yl a lcoho l)
• Anti -knock index must be 87 AKI or higher.
• Blend must not contain more than 10% ethanol.
Blend of gasoli ne a nd MTBE
• Anti-knock index must be 87 AKI or higher.
• Blend must contain not more than 15% MTBE.
Seasonall y ad ju ste d ga solin e
Many gasoline grades are blended to perform especially well for
winter or summer driving . During seasona l change -over, we suggest
that you fil l up at busy gas stations where the seasonal adjustment
is more likely to be made in time.
0 Note
• Methanol fuels which do not meet these requirements may
cause corrosion and damage to p lastic and rubber components in
the fuel system.
• Do not use fuels that fail to meet the specified criteria in this
chapter .
• If you are unable to determine whether or not a particu lar fuel
blend meets the specifications, ask your service station or its fuel
suppl ier.
• Do not use fuel for which the contents cannot be identified.
• Fuel system damage and performance problems resu lting from
the use of fuels different from those specified are not the responsi ­
bility of Audi and are not covered under the New Vehicle or the
Emission Control System Warran ties.
• If you experience a loss of fue l economy or driveability and
performance problems due to the use of one of these fue l b lends,
we recommend that you switch to unblended fuel.•
Fue l supply and fillin g yo ur fu el tank
Gasoline additives
A major concern among many auto manufacturers is carbon
deposit build-up caused by the type of gasoline you use.
Although gasoline grades d iffer from one manufacturer to another,
they have certain things in common. A ll gaso line grades contain
substances that can cause deposits to collect on vita l engine parts,
such as fuel injectors and intake valves. Although most gaso line
brands inc lude additives to keep engine and fue l systems c lean,
they are not equally effective.
Audi recommends using TOP T IER Detergent Gasol ine. For more
information on TOP TIER Detergent Gaso line, please go to the offi­
cial website (www.toptiergas .coml.
After an extended period of using inadequate fue ls, carbon deposit
build -ups can rob your engine of peak performance.
(D Note
Damage or malfunction due to poor fuel qua lity is not covered by
the Audi New Vehic le Limited Warranty .•
Fuel tank
Fuel filler neck
The fuel fi ller neck is located on the right rear side panel behind the
fue l filler f lap.
If the power locking system should fail, you can still open the flap
manually - for detailed instructions see~
page 248.
You can find the fuel tank capacity of your vehicle in Tech nic al Dat a
~ page 314 . _,.
Ve hic le care

Fuel supply and filling your fuel tank
The labe l on the inside of the fuel filler flap tells you the correct fuel
f o r your vehicle . Fo r m ore inf ormatio n about f uel specifica tions, see
~ page 244.
Y our vehicle fuel tank has an on -b oard refuelling vapor recove ry
system. This feature he lps to preve nt fuel vapors from escap ing
from the tank and polluting the environment while you refue l you r
veh ic le . I n o rder t o fill the tank properly while protec ting the envi ­
ronmen t, please follow this re fueling procedure carefully .
L1}. WARNING
Under normal operating conditions , never carry additional fuel
containers in your car. Gas canisters and other containers used to
transport fuel can be dangerous . Such containers , full or empty,
may leak and could cau se a fire in a collision . If you must transport
fuel to use for your lawn mower , snow blower , etc ., be very careful
and alway s ob serve local and state laws regarding the u se , tran s­
portat ion and storage of su ch fuel container s. Make certain the
c ontainer meets industry standard s (ANSI/ASTM F852 -861 .
0 Note
Never d rive your vehic le un til the fue l tank is co mpletely empty . The
irregular supply of fuel can cause misfiring . Gasoline could enter
t he exhaus t system and damage the catalytic converter . •
Refuelling
Fi g. 191 Rig ht v ehi cle
si de , st andi ng beh ind
the rear whe el:
opening the fuel filler
flap ,
F ig . 19 2 Fuel cap
s itting on th e opened
fuel filler f lap
W hen a dding fuel, th e i gnit io n a nd any ce llular ph ones in
th e v ehicl e m ust be sw itch ed off.
Taking the fuel cap off
Press the rig ht side o f the f uel fi ller fla p to ope n it
=> fig .19 1.
Unsc rew fuel filler cap co unter-clock wise and han g it o n
t h e fuel fille r flap .
~

•
Refuelling procedure
-Insert the fue l nozzle from the gaso line pump i nto the
fue l fi ller neck as far as it w il l go.
- Select a medium refue lling rate so that the nozzle
swi tches off automatica lly w hen the tank is ful l.
Putting the fuel cap back on
-Aft er fillin g yo ur ta nk, twist th e fue l fille r cap clockw is e
unt il you hear a de finit e cli ck .
- Cl ose the fue l fille r flap.
To avo id fu el sp illing or evapora ting from the fuel tan k always close
fu el filler cap p rop erly and co mplet ely . An i mprope rly clo sed fue l
fi ller cap may a lso cause a messa ge in the dr iver in fo rm ation display
=>
page 27 or cause the MIL lamp=> page 27 to come on.
,& WARNING
Improper refueling or handling of fuel can cause fire, explosion
and severe burns .
• Fuel is highly flammable and can cause severe burns and other
injuries .
• Failure to shut the engine off while refueling and /or to insert
the pump nozzle fully into the fuel filler ne ck could cause fuel to
spray out of filler neck or to overflow. Fuel spray and overflowing
fuel can cause a fire .
• Never use a cellular telephone while refueling . The electromag ­
netic radiation can cause sparks that can ignite fue l vapors and
c ause a fire .
• Never get ba ck into your vehicle wh ile refueling . If in e xcep ­
tional circumstan ces you must get ba ck in your vehicle while refu­
eling , make certain that you close the door and touch metal to
di scharge static electricity before touching the filler nozzle again.
Fu el supply and filling your fu el tank
& W ARNING (continued )
Static electricity can cause sparks that can ignite fuel vapors
released during refueling .
• Never smoke or have an open flame anywhere in or near your
vehicle when refueling or filling a portable fuel container.
• For your safety , we strongly recommend that you do not travel
with a portable fuel container in your vehicle. The container , full or
empty may leak and could cause a fire , especially in a crash .
• If, under e xcept ional circumstances , you must transport a
portable fuel container, please observe the following:
-Never fill a portable fuel container while it is anywhere
in or
on the vehicle (for example , in the luggage compartment , or on
the trunk) . Static electricity can build up while filling and can
ignite fuel vapors causing a fire.
- Always place a portable fuel containe r on the ground before
filling.
- Always keep the filler nozzle completely inside the portable
container before and during filling .
- If filling a portable container made of metal , the filler nozzle
must always be in contact with the container. Thi s will help
prevent static ele ctricity from discharging and cause a fire.
- Never spill fuel inside the vehicle or luggage compartment .
Fuel vapors are h ighly flammable .
- Always observe local and state/provincial laws regarding the
use , storage and transportation of fuel conta iners.
- Make certain the fuel container meets indu stry standards
(ANSI / ASTM F852-86).
0 Note
If any fuel has spil led onto the car , it should be removed immedi -
ate ly to prevent da mage to the pa int. _,.
Vehic le care

IIPJI Alphabetical index _ __,__ ___ ____;_...::.:...::... ___________________________ _
Hood ...... ... ...... .. ... .. .. ... 249
Starting .. .... .... ....... ... 119,120
Starting with jumper cables ....... 304
Stopping . . . . . . . . . . . . . . . . . . . . . . .
120
Engine compartment
Safety instructions . . . . . . . . . . . . . . .
250
Working in the engine compartment 250
Engine coolant .................. ... 258
Checking the engine coo lant level .. 258
Malfunction warning symbol ... ..... 31
Engine coolant level
Checking ... .. .... .... ..........
258
E . I
ngine coo ant system ... .... ....... 257
Adding coolant .................. 259
Radiator fan . . . . . . . . . . . . . . . . . . . . . 260
Engine coolant temperature
Temperature gauge ....... .... ....
13
Engine data ...... ............... ... 314
Engine hood Closing ... .... ... .... .... ...... .
250
How to release the hood . . . . . . . . . . 249
Opening .. .... .... ....... .... ... 249
Engine oil ... ... .... .... .... ... .... 252
Adding ... .. ...... ... .... ...... . 255
Additives . . . . . . . . . . . . . . . . . . . . . . . 255
Changing . .............. ........ 256
Checking the engine oil level ...... . 254
Indications and conditions requiring extra
checking .... .... ....... .... ...
254
Indicator light . . . . . . . . . . . . . . . . . . . . 33
Oil capacity . . . . . . . . . . . . . . . . . . . . .
314
Oil consumption ................. 254
Oil grades . . . . . . . . . . . . . . . . . . . . . . . 252
Recommended oil check intervals .. 254
Sensor defective . . . . . . . . . . . . . . . . . . 33
Specification and viscosity ...... ..
252
Engine oil pressure
Malfunction .. ....... ..... ... .... . 32
Environment Break -in period .... .... .... .... ..
219
Catalytic converter .... .... .... ... 220
Disposing of your vehic le battery ...
262
Driving at high speeds ...... .... .. 221
Driving to minimize pollution and noise .
221
Fuel ......... .... ... .. .... .... .. 246
Fuel economy ....... ...... ...... 221
Leaks under your vehicle . ...... ... 250
Letting the vehicle stand and warm up
222
Proper disposa l of drained brake fluid
261
Proper disposal of drained engine
coo lant ..................... ...
259
Proper disposa l of drained engine oil
255,256
Recycling used eng ine oil ......... 255
Unleaded fuel ... .... ..... .... ... 244
What should I do with an old battery?
262
EPC
See Electronic power control .. ... .. . 22
ESP Electronic stabi lization program ....
212
See also Electronic stabilization program
(ESP) . ... .... .... ........ ......
212
Event Data Recorder (EDR) .. ....... .. 212
Expansion tank .. .. .. .. .. .... .... ... 258
F
Fahrenheit
Switching between Fahrenheit and Centigrade ... .... ..............
113
Fan
Climate controls ... ....... .... ...
114
Radiator ...... .... ........... ... 260
Setting the fan speed 114
Flat tire
Changing .. .... .... ............. 293
Floor mats
Fog lights
153
Front ....... ...... .... ........ ... 79
Folding master key with remote control . 47
Foot pedals . ... .. .... .... .... ...... 152
For the sake of the environment
Gaso line fumes and the environment
246
Letting your engine warm up ....... 120
Reducing engine noise by early
upshifting ......................
13
Refueling ......... ...... ........ 246
Saving fuel by early upshifting . ..... 13
Using the rear window defogger ....
116
Front airbags
Description ......................
172
How they work ..... .... ....... ... 177
Front ashtray . . . . . . . . . . . . . . . . . . . . . . . 104
Front seat adjustment
Safety guide lines .................. 92