2011 AUDI A5 COUPE ESP

Fuel supply and filling your fuel tank
Blend of gasoline and MTBE
• Anti-knock index must be 87 AKI or higher.
• Blend must contain not more than 15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform especially well fo r
winter or summer driving. During seasonal change-over, we suggest
that you fill up at busy gas stat ions where the seasonal adjustment is
more likely to be made in time.
0 Note
• Methano l fuels which do not meet these requirements may cause
corrosion and damage to plastic and rubber components in the fue l
system .
• Do not use fuels that fail to meet the specified criteria in this
chapter .
• If you are unab le to determine whether or not a particu lar fuel
blend meets the spec ifications, ask your serv ice station or its fuel
supplier.
• Do not use fuel for which the contents cannot be identified.
• Fuel system damage and performance problems resulting from
the use of fuels different from those specified are not the responsi­
bility of Aud i and are not covered under the New Vehicle or the Em is­
sion Control System Warranties.
• If you experience a loss of fuel economy or driveab ility and perfor­
mance problems due to the use of one of these fuel blends, we
recommend that you switch to unblended fuel.•
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 differ from one manufacturer to another,
they have certain things
in common. All gaso line g rades contain
substances that can cause deposits to collect on v ital engine parts,
such as fuel injectors and intake valves. A lthough most gasoline
brands include additives to keep eng ine and fuel systems clean, they
are not equally effective.
Audi recommends using TOP TIER Detergent Gasoline. For more
information on TOP TIER Detergent Gasoline, please go to the officia l
webs ite (www.toptiergas.com).
After an extended period of using inadequate fuels, built-up carbon
deposits can rob your engine of peak performance.
0 Note
Damage or malfunction due to poor fuel quality is not covered by the
Audi New Vehicle Limited Warranty. •
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear side panel behind the
fuel filler flap .
If the power locking system should fail, you can still open the flap
manually- for detailed instructions see~
page 273.
You can find the fue l tank capacity of your vehicle in Technical Data
~page 339.
The label on the inside of the fuel filler flap tells you the correct fuel
for your ve hicle. For more information about fuel specifications, see
~page 269.
Your vehicle fuel tank has an on-board refue lling vapor recovery
system. This feature helps to prevent fuel vapors from escaping from
the tank and polluting the environment wh ile you refuel your veh icle . ..,_

-Fuel supply and filling your fuel tank
P:Vf------=-=----------=-:o..------------
To avoid fu el sp illin g o r evaporat ing from th e fue l tank a lways clos e
fu el cap prop erl y and com plete ly.
& 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 neck 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 fuel vapors and
cause a fire.
• Never get back into your vehicle while refueling. If in excep­
tional circumstances you must get back in your vehicle while refu­ eling, make certain that you close the door and touch metal to
discharge static electricity before touching the filler nozzle again.
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 exceptional 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 container on the ground before
filling.
& WARNING (co ntinued )
-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. This will help
prevent static electricity from discharging and cause a fire.
- Never spill fuel inside the vehicle or luggage compartment .
Fuel vapors are highly flammable.
- Always observe local and state/provincial laws regarding the
use, storage and transportation of fuel containers.
- Make certain the fuel container meets industry standards
(ANSI/ ASTM F852-86).
0 Note
If any fu el ha s sp illed onto t he car , it shoul d be remove d imme diate ly
to p revent damage to the pa int.
As soo n as the cor rect ly operate d nozz le switches off automatically
fo r the fi rs t time, the tank i s full. D o not try to add mo re fue l because
fu el may spill ou t. In addi tion, t he e xpans ion s pace in the fuel ta nk
w ill b e filled - causing t he fue l to overflow when it becomes warm an d
poll ute the environment .
W Tips
• Runn ing y our e ng in e while ref uellin g m ay caus e vapor s to escape
or
even cause fuel to spill out of the tank . This wo uld then shut of f the
fue l no zzle before the tank is ful l.
• Do not ref uel your vehicle with t he ignition turned on . T h e f uel
g auge may o therwise not indicate the co rrec t fu el level af te r ref uel-
ling . .,_

Checking and filling Ill
-------------~--
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced.
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage=:> &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area=>& .
& WARNING
To help avoid injury, before you check anything under the hood:
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake.
Safety first
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park);
put manual transmission in Neutral.
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment.
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm. The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary:
-Always disconnect the battery.
- Never smoke or work near heaters or open flames. Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine is
running or being started, never touch:
-Ignition cables
- Other components of the high voltage electronic ignition
system.
• If you must perform a check or repair with the engine running: ..,
Vehicle care Technical data

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0 Note
• Before w inter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions. This is especially important if yo u live in a region where
the winter is extremely cold.
If necessary, increase the proportion of
coolant additive to 60% .
• When adding coolant additive to your cooling system, remember :
- We recommend using only coolant additive G12++ (check the
label) for your vehicle. This coolant additive is available at autho­
r iz ed Audi dealers. Other types of antifreeze can s ignificantly
reduce corrosion protection. The resulting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sealant to your vehicle 's
engine coolant. Adding radiator repair flu id may adversely affect the
function and performance of your cooling system and cou ld result in
damage not covered by your New Vehicle Limited Warranty .•
Checking the engine coolant Level
The engine coolant level can be checked with a quick
glance.
Fig. 208 Engine
co mpartment : Coolant
expansion tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS~ & in "Working in
the engine compartment" on
page 275.
-Turn off the ignition.
- Read the engine coolant level from the coolant expansion
tank~ fig. 208 . With a cold engine, the coolant level
should be between the "MIN" and "MAX" markings. When
the engine is warm, the level may be slightly above the
"MAX" marking.
The locat io n of the coolant expansion tank can be seen in the engine
compartment illustration~
page 276.
To obtain an accurate reading, the engine must be switched off.
The expansion tank in your vehicle is equipped with an electric coolant level sensor.
When the coolant level is too low, the warning light in the Auto-Check
System =>
page 34 will blink until you add coolant and the level has
been resto red to normal. Even though there is an electric coolant
level sensor, we still recommend you check the coolant level from
time to time.
Coolant loss
Coolant loss may indicate a leak in the coo ling system. In the event of
coolant loss, the cooling system should be inspected immediately by
your authorized Audi dealer. It is not enough merely to add coolant.
In a
sealed system, losses can occur only if the boiling point of the
coo lant is exceeded as a result of overheating .
& WARNING
The cooling system is under pressure and can get very hot. Reduce
the risk of scalding from hot coolant by following these steps.
• Turn off the engine and allow it to cool down.

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Have the battery checked when you take your vehicle in for service.
You are well advised to replace a battery that is older than 5 years.
With certain types of a irbag deployment, the battery is disconnected
from the vehicle e lectrical system for safety reasons=>
& in "Repair,
care and disposal of the airbags" on
page 204.
Disconnecting the battery terminals
Some vehicle functions (power window regulators, for example) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the battery terminals are connected aga in . To
prevent this, the battery should only be disconnected from the
vehicle electrical system when absolutely necessary for repairs.
Vehicles not driven for long periods
If you do not dr ive your vehicle over a period of several days or weeks,
electrical components are gradually cut back or switched off. This
reduces energy consumption and maintains starting capability over a
longer period=>
page 243.
Take into consideration that when you unlock you r vehicle, some
convenience functions, such as the master key remote function or
power seat adjustment, may not be available. The convenience func­
tions will be available again when you turn on the ign ition and start
the engine.
W inter operation
During the w inte r months, battery capacity tends to decrease as
temperatures drop. This is because more power is also consumed
wh ile starting, and the headlights, rear window defogger, etc., are
used more often.
Avoid unnecessary power consumption, particularly in city traffic or
when traveling only short distances. Let your authorized Audi dealer
check the capacity of the vehicle battery before winter sets in
=> page 288. A well charged battery will not only prevent starting
problems when the weather is cold, but will also last longer.
W Tips
If your vehicle is left standing for several weeks at extremely low
temperatures, the vehicle battery should be removed and stored
where it will not freeze. This will prevent it from being damaged and
having to be replaced .•
Working on the battery
Be especially careful when working on or near the
battery.
The battery is located in the luggage compartment under the
floor. Before you check anyth ing in the lu~gage compart­
ment,
read and heed all WARNINGS:=>& .
Always heed the safety warnings, when working on the vehicle
battery or the vehicle electrical system to prevent injury .
The following WARNINGS are very important when
working on the battery:
Always heed the following WARNING SYMBOLS and safety pre­
cautions when working on the battery.
Always wear eye protection.
Battery acid contains sulfuric acid. Always wear
gloves and eye protection . .,,_

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Fast charging the battery (charging rate above 14 .8
Volts)
For technical reasons do not use a battery charge r that uses voltage
greater than 14.8 Volts to charge yo ur vehicle's battery.
& WARNING
Charging a battery can be dangerous.
• Always follow the ope rat ing instructions provided by the
battery charger manufacturer when charging your battery .
• Never charge a frozen battery. It ma y explode because of gas
trapped in the i ce . Allow a frozen battery to thaw out first .
• Do not reuse batteries which were frozen . The battery housing
may hav e cra cked and weakened when th e batter y froze.
• Charge the battery in a well ventilated area . Keep away from
open flame or electr ical spark . Do not smoke . Hydrogen gas gen er­
ated by the battery i s explosive.
• To reduce the danger of explo sion, n ever conne ct or dis connect
c harger cables while the charger is operating.
• Fast charging a battery is dangerous and should only be
attempted by a competent te chnician with the proper equipment.
• Battery acid that may spill during charging should be washed
off with a solution of warm water and baking soda to neutralize
the acid.
0 Note
Never use a fast charger as a booster to start the eng ine. This w ill seri­
ous ly damage sens itive elect ronic components, such as control units,
re lays, rad io, etc., as well as the battery charger. •
Safety first
Battery replacement
The ne w ba ttery must have the same spe cific ations and
dimensions as the original equi pment battery.
Inte lligent energy management in your veh icle is responsible for
dist ributing the ele ct ric a l ene rgy t hroughout yo ur veh icle
~ page 243. The intelligent energy management system will keep
t he eng ine ba ttery c ha rged better then vehicles wi thou t this system.
To make sure the additional e lectrical energy is available once again
after you h ave changed the ba tte ry, we re commend t hat yo u inst all
batter ies of the same type and ma nufacture only (the same as t hose
installe d at the time your ve hicle was delivere d). Specifications a re
listed on the battery housing . Your authorized Aud i dealer must code
the batte ry in the energy management system to enable you to use
the energy management f unctions co rrectly after rep laci ng the
battery.
If it is no t poss ibl e to use a batte ry of thi s ty pe, the new ba tte ry mus t
have the same capac ity , voltage (12 volts) , amperage , construction
and plug sea ling .
Whe n ins tal ling the ba ttery, make sure the ign it io n and a ll electr ica l
cons umers are turned off.
0 Note
Make s ure t he venti lation hose on the s ide of the battery is
co nnected, o the rwise fumes or battery acid can lea k out.
W For the sake of the environment
B ecau se of the p roblem of proper di sposal of a ba tte ry, we recom ­
mend your authorized Audi dealer change the battery for you.
B atteries con tain sulfuri c acid and lead and m ust always be dispose d
of properly in comp liance w it h all environmental regulations.
Dis pos ing o f vehi cle b atter ies im proper ly is ve ry dange ro u s to the
environment .•
Vehicle care Technical data

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
& WARNING (conti nu ed )
• Tire s age even if they are not being used and can fail suddenly ,
especially at high speeds . Tires that are more than 6 year s old can
only be used in an emergency and then with special care and at low
s peed .
Glossary of tire and loading terminology
Accessory weight
means the combined we ight (in excess of those sta nda rd items which
may be rep lace d) of automatic transmission, power steering, power
bra kes, powe r w indows , power seats, radio, and heater, to the extent
that these items are avai lab le as factory- installed equipment
(w het he r i nsta lled or no t).
Aspect ratio
me ans the ratio of t he he ight to t he w id th of the tir e in percent .
Numbe rs of 55 o r lower indicate a low sidewa ll for improved steer ing
respo nse an d be tter overa ll handling on dry p avemen t.
Bead
means the part o f the tire that is made of stee l w ires , wrap ped o r
re in forced by ply cords and that is shaped to fit the rim.
Bead separation
means a brea kdown of the bon d between components in the bead .
Cord
means the st rands forming the plies in the tire.
& W ARNING (continued )
• Never mount used tire s on your vehicle if you are not sure of
their "previous hi story ." Old used tires may have been damaged
eventhoughthedamagecannotbeseenthatcanleadtosudden
tire failure and lo ss of vehicle control.
• If you notice unu sual vibration or if the vehicle pull s to one side
when driving, alway s stop as soon as it is safe to do so and check
the wheels and tires for damage. •
Cold tire inflation pressure
means the tire pressure recommended by the vehicle ma nufa cturer
for a tire of a des ignated size t hat has not been driven for more than
a couple of m iles ( kilomete rs) a t low speeds in the t hree ho ur period
before the tire pressure is measured or ad justed.
Curb weight
mea ns the weig ht of a motor vehicle wit h standard equ ipment
including the max imum cap aci ty of f ue l, oil, and coo lan t, air condi ­
tioning and additiona l weight of optional equipment.
Extra load tire
means a tire design to operate at higher loa ds and at higher inflation
pressures than the co rrespo nd ing standard tire. Extra load tires may
be identified as "XL", "xl", "EXTRA LOAD", or "RF" on the sidewal l.
Gross Axle Weight Rating ( "GAWR ")
means the load -ca rry ing capacity of a s ingle ax le system, measured at
t he t ire-grou nd inte rfaces .
Gross Vehicle Weight Rating ("GVWR")
means the max imum total loaded we ight of the vehicle .

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Groove
means the spa ce between two ad jacen t tread ribs .
Load rating (code)
mea ns the max imu m load th at a tir e is ra te d to c arry fo r a give n infla­
tion pressure. You may not find this information on all t ires beca use
i t is no t required by law .
Maximum load rat ing
me ans the load r ati ng for a t ire at th e maxi mum p ermis sib le in flation
pressure for that tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weig ht
(c) Vehicle ca pacity we ight, and
(d) Pro duct ion op tions weigh t
Maximum (permissible) inflation pressure
means the m aximu m cold infla tio n pr essur e to whi ch a t ire may be
inflated . Also called "maximum inflat ion press ure."
Normal occupant weight
means 150 lbs. (68 k ilog rams) times t he num ber of occupants seate d
in t he vehi cle up to the total sea ting cap aci ty of yo ur vehicl e.
Occupant distribution
means d is tribut ion of occ upan ts i n a vehicle.
Outer diameter
means the ove rall d iameter of an inflated new tire.
Overall width
means the linear distance betwee n the exter iors of the s idewalls of
a n in flated tire, in cludi ng eleva tions due to la beling, dec ora tions, o r
protective bands or ribs.
Safety first
Ply
means a layer o f rubbe r-coate d para llel co rds.
Production options we ight
me ans the co m bine d we ight of tho se in stalled regu lar pr oduction
options weighi ng over 5 lbs. (2.3 kg) in excess of t hose standard
i t ems w hic h they replace, not previously considere d in c urb we igh t o r
accessory weight, includ ing heavy duty brakes , ride levelers, roof
rack, heavy duty battery, and s pecial tr im.
Radial ply tire
me ans a pneuma tic tir e in wh ich the pl y cords that extend to t he
beads are laid at substantially 90 degrees to the centerline of the
t rea d.
Recommended inflation pressure
see => page 292, "C old tire in fla tion pr essu re".
Reinforced tire
mea ns a t ire desig n to operate at h ig her loads and at h igher i nflat io n
pressures tha n the corresponding standard tire . Re inforced tires may
be iden tifi ed as " XL", "x l", "E X TR A LOA D", or "RF " on t he sidew all.
Rim
means a metal suppo rt fo r a tire or a tire and tube assemb ly up on
wh ic h the t ire beads are seated.
Rim diameter
means nom inal d iameter of the bead seat . If you change yo ur whee l
si ze, yo u w ill have to purchase new tires to ma tc h the new r im diam­
eter .
Rim size designation
means r im diamete r and width.
Rim width
mea ns nom inal dis tance be twee n rim flanges.
Vehicle care Technical data