2016 AUDI S4 open gas tank

Fuel and Refueling
Gasoline additives
A major concern among many auto manufactur­
ers is carbon deposit build-up ca used by the type
of gasoline you use.
Although gasoline grades d iffer from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on v ital engine
parts, such as fuel injectors and intake valves. Al­
though most gasoline brands include additives to
keep engine and fuel systems clean, they are not
equally effective.
Audi recommends using TOP TIER Detergent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline, please go to the official website (www.toptiergas.com).
After an extended period of using inadequate
fue ls, built-up carbon depos its can rob your en­
g ine of peak performance.
CD Note
- Damage or malfunction due to poor fuel
quality is not covered by the Audi New Vehi­
cle Limited Warranty .
- Do not add aftermarket fuel additive prod­
ucts to yo ur fuel tank.
Refueling
Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel f iller flap .
If the power locking system should fail, you can
still open the flap manually -for detailed instruc­
tions see
c> page 202.
You can find the fuel tank capacity of your vehicle
in
c> page 256 .
The label on the inside of the fuel filler flap tells
you the correct fue l for your vehicle. For more in­
formation about fuel specifications, see
<=>page 198.
Your vehicle fuel tank has an on-board refuelling
vapor recovery system. This feature he lps to pre­
vent fuel vapors from escaping from the tank and
200
polluting the environment whi le you refuel your
vehicle. In order to fill the tank proper ly while
protecting the env ironment, please follow th is
refueling procedure carefully.
A WARNING
Under normal operating conditions, never car­
ry additional fuel containers in your car. Gas
can isters and other containers used to trans­
port fue l can be dangerous. Such containers,
full or empty, may leak and could cause a fire
in a col lision.
If you must transport fuel to
use for your lawn mower, snow blower, etc.,
be very careful and always observe local and
state laws regarding the use, transportation
and storage of such fuel containers. Make cer­
tain the container meets industry standards (ANSI/ASTM F852 -86).
CD Note
Never drive your vehicle until the fuel tank is
complete ly empty. The irregular supply of
fuel can cause misfiring. Gasoline could enter the exhaust system and damage the catalytic
converte r.
Refuelling
Fig. 175 R ight rea r vehicle side: Open ing the fuel filler flap
Fig. 176 Fuel filler flap w ith attac hed fuel cap

..... N
0 ::..:: co ..... ..... When activating the central locking, the fuel fill­
er flap is automatically unlocked or locked. Re­
fue l the vehicle with the ignit ion turned
off.
T a king the fuel cap off
.,. Turn off the ignition.
.,. Press the left side of the fue l filler flap to open
it
c:> fig . 175 -arrow -.
.,. Unscrew fue l cap counter -clockwise and hang it
on the fue l filler flap
c:> fig. 176.
Refuelling proc edure
.,. Inse rt the fue l nozzle from the gasoline pump
into the fuel filler neck as far as it will go .
.,. Se lect a medium refuelling rate so that the
nozzle switches off automatically when the
tank is full.
Putting the fuel cap back on
.,. After filling your tank, tw ist the f uel cap clock-
wise as far as it wi ll go .
.,. Close the fuel filler flap.
To avoid fuel spill ing o r evaporating from the f uel
tank always close fuel cap proper ly and com ­
pletely.
A WARNING
Improper refueling or handling of fuel can
cause fire, explosion and severe b urns.
-
- Fuel is highly flammable and can cause se­
vere burns and other injur ies .
- Failure to shut the engine off wh ile refuel ­
ing and/or to insert the pump nozz le fully
into the fuel filler neck could ca use fue l to
spray out of filler neck or to ove rflow. Fuel
spray and overflowing fue l can cause a fire.
- Never use a cellular telephone wh ile refuel­
ing. The electromagnetic radiation can
cause spa rks that can ignite f uel vapors and
cause a fire.
- Never get back into your vehicle while refu­
eling. If in except ional circumstances you
must get back in your vehicle while refuel­
ing, make certain that you close the door
and touch meta l to discha rge static ele ctric­
ity befo re touching the filler noz zle ag ain.
Fuel and R efueling
Stat ic elect ricity can cause sparks that can
ignite fue l vapors released during refueling.
- Never smo ke or have an open flame any ­
where in or near your vehicle when ref ueling
or filling a portable fuel container .
- For your safety, we strongly recommend
that you do not trave l with a po rtable fuel
container in your veh icle. The container, fu ll
or empty may leak and co uld cause a fire,
especially in a crash.
- If, under except ional circumstances, you
m ust transport a portable fuel container,
p lease observe the following:
- Never fill a portab le fue l conta iner while it
is anywhere in or on the vehicle (for exam­
ple, in the l uggage compa rtment, o r on
the trunk). Static electricity can build up
while filling and can ignite fuel vapors caus ing a f ire .
-Always place a portab le fue l conta iner on
the ground before fi lling .
-A lways keep the f iller nozzle comp lete ly
inside the portable container before and
during f il li ng.
- If filling a portable conta iner made of
metal, the filler nozz le must always be in
contact with the container . This will he lp
prevent stat ic elec trici ty from discharging
and ca use a fire.
- Never spill fue l inside the vehicle o r lug­
gage compartment. F uel vapors a re highly
flammable.
- Always observe loca l and state/prov incial
laws rega rding the use, storage a nd trans­
po rtation of fuel contai ners.
- Make ce rtain the f uel con tainer mee ts i n­
dust ry standards (A NSI/ AS TM F852 -86).
(D Note
If any fuel has sp illed onto the car, it should
be removed immed iately to p revent damage
to the pa int.
@) For the sake of the environment
As soon as the correctly operated nozzle
switches off automatically for the first time,
201

Index
Engine hood Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . .
203
How to release the hood . . . . . . . . . . . . . . 203
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Adding .. .. .. ............... .... ... 207
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Check oil level . . . . . . . . . . . . . . . . . . . . . . 207
Consumption . . . . . . . . . . . . . . . . . . . . . . . 207
Indicator light .. .................. 17, 20
Oil consumption . . . . . . . . . . . . . . . . . . . . . 206
Pressure malfunction . . . . . . . . . . . . . . . . . 17
Sensor defective . . . . . . . . . . . . . . . . . . . . . . 20
Specification and viscosity . . . . . . . . . . . . . 205
Engine speed limitation . . . . . . . . . . . . . . . . . 20
Environment
Catalytic converter . . . . . . . . . . . . . . . . . . .
186
Disposing of your vehicle battery . . . . . . . 215
Driving at high speeds . . . . . . . . . . . . . . . . 187
Fuel. .... .. .. .. ............. .... .. . 200
Leaks under your vehicle . . . . . . . . . . . . . . 203
Letting the vehicle stand and warm up . . . 187
Proper disposal of drained brake fluid . . . 212
Proper disposal of drained engine coolant 210
Proper disposal of drained engine o il 207, 208
Recycling used engine oil . . . . . . . . . . . . . 207
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Unleaded fuel . . . . . . . . . . . . . . . . . . . . . . . 198
What should I do with an old battery? 215
E PC
refer to Electronic power control . . . . . . . . 20
Ethyl alcohol (Fuel) . . . . . . . . . . . . . . . . . . . . 199
Event Data Recorder (EDR) . . . . . . . . . . . . . 176
Expansion tank
Exterior lighting
Exterior mirrors 209
48
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
D ' . 1mming ... .. .. ................ ..... 52
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
F
Fan
Radiator
211
Fastening
Booster seats . . . . . . . . . . . . . . . . . . . . . . .
166
Convertible chi ld safety seats . . . . . . . . . . 164
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 163
266
Fastening eyes
refer to Tie-downs . . . . . . . . . . . . . . . . . . . . 72
flexib le fue l . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Fog lights/rear fog light(s) . . . . . . . . . . . . . . 48
Fold ing the rear seats . . . . . . . . . . . . . . . . . . . 69
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 125
For the sake of the environment
Environmentally -friendly driving . . . . . . .
187
Gasoline fumes and the environment . . . . 200
Letting the engine warm up . . . . . . . . . 80, 83
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Sav ing fuel by early upshifting . . . . . . . . . . 11
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . .
142
How they work . . . . . . . . . . . . . . . . . . . . . . 146
Frontal collisions and the laws of physics . . 131
Front passenger 's door emergency locking . . 36
Front seats
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . .
123
Child restraints in the front seat . . . . . . . . 139
Fuel
Additives .. ... ... ... ...... ....... ...
198
Blended gasoline 198
Consumption . . . . . . . . . . . . . . . . . . . . . . . . 24
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline add it ives . . . . . . . . . . . . . . . . . . . 200
Low fue l level symbol . . . . . . . . . . . . . . . . . 20
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 198
Recommendation ... ................. 198
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Saving fuel . . . . . . . . . . . . . . . . . . . . . . . . . 187
Tank capacity . . . . . . . . . . . . . . . . . . . . . . . 256
Tank system . . . . . . . . . . . . . . . . . . . . . . . . . 20
Unlocking the fuel filler flap by hand . . . . 202
Fuel economy messages (efficiency program) 28
Fuel filler flap
Unlocking the fuel filler flap by hand . . . .
202
Fuses
A . ss 1gnment . .. .. .. .. .. ..... 246, 247, 248
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 246
G
Garage door opener (HomeLink) . . . . . . . . . . 44