2010 AUDI A5 CABRIOLET Owners Manual

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Checking and filling
Engine hood
Releasing the engine hood
The engine hood is released from inside the vehicle.
- Open the driver's door.
Fig. 218 Driver's side
footwell : engine hood
release lever
- Pull the release lever on the left under the instrument
panel ::::, fig . 218 in the direction of the arrow.
The hood pops up slightly under spring pressure. •
Vehicle OP-eration
Opening the engine hood
Fig. 219 Release lever
under the engine hood
Before opening the engine hood, make sure that the wind­
shield wipers are flat against the windshield. Otherwise, they
could damage the paint on the hood.
Pull up on the release under the hood::::, fig. 219 . This
releases the catch.
- Open the hood all the way::::,& .
& WARNING
Hot engine coolant can burn you.
• 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. •
Vehicle care Do-it-yourselt service iTechnical data

-Checking and filling
-------=------=---------------------------------------------------
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.
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park).
• 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: -First, fully apply the parking brake, move selector lever of
automatic transmission to "P" (Park). ..,

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& WARNING (co ntinued )
-Alway s use extreme caution to prevent clothing , jewelry , or
long hair from getting caught in the radiator fan, V-belts or
other moving parts, or from contacting hot parts. Tie back hair
before start ing , and do not wear clothing that will hang or
d roop into the engine.
• Minimize expo sure to emis sion and chemical hazards~& .
& WARNING
California Proposition 65 Warning:
• Engine exhaust, some of it s constituents, and certain vehicle
components contain or emit chemicals known to the State of Cali ­
fornia to cause can cer and birth defects and reproductive harm . In
addition, certain fluids contained in vehicles and ce rtain products
of component wear contain or emit chemicals known to the State
of California to cause cancer and birth defects or othe r reproduc­
tive harm.
• Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive harms . Wash hands after
handling.
0 Note
When adding fluids , a lways make sure that they are poured into the
proper co nta iner o r filler opening, otherwise serio us damage to
vehicle systems will occur.
<£> For the sake of the environment
To detect leaks in time, inspect the vehicle floor pan from underneath
reg ula rly . If yo u see spot s from o il or o ther vehicle fluid s, have your
vehicle inspected by an authorized Aud i dea ler. •
Vehicle OP-eration
Engine compartment
These are the most i mportan t it ems that you can check.
Fig . 220 Typ ical layout for c ontainer s and engine oil filler cap
(D Jump start point( +) under a cover ........ .. .. .. .. . 293, 334
@ Brake fluid reservo ir ( ) . . . . . . . . . . . . . . . . . . . . . . . . 290
@ Engine oil f iller c ap
('1::r. ) . . . . . . . . . . . . . . . . . . . . . . . . 285
© Coolant ex pansion ta nk (-L ) . . . . . . . . . . . . . . . . . . . . . 28 7
© Jump start point( -) w ith he x head screw ..... ... .. . 293 , 33 4
© Winds hield/head light washer container (0 ) . . . . . . . . 295
(j) Power steering reservoir . . . . . . . . . . . . . . . . . . . . . . . . 246
Th e posi tion of the eng ine o il filling hole ~ fig. 220 (i tem @) can
differ depending on the eng ine des ign . ..,.
Vehicle care Do-it-yourselt service iTechnical data

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in. WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS~
& in "Working in the engine
compartment" on
page 280. •
Engine oil
Engine oil specifications
The engine oil used in your Audi needs the right kind of oil.
The engine in your Audi is a sophisticated power plant that was built
to exacting specifications. This engine needs the right kind of engine
oil that meets specifications regarding quality and viscosity so that it
can run smoothly and reliably. Choosing the right oil and changing oil
within the time and mileage intervals printed in your vehicle 's
Warranty
& Maintenance booklet matters a lot more today than it did
years ago. Audi has developed a special quality standard for engine oil
that will help assure that your vehicle 's engine will get the lubrication
it needs for proper operation .
Modern engine lubrication has taken a quantum leap in the last few
years. Many synthetic oils available today provide better engine lubri­
cation that can outlast traditional petroleum-based oils, making
them a smart choice for use throughout the life of your Audi.
Whether you use synthetic or petroleum-based engine oil, the oil that
you use must conform to Audi's oil quality standard VW 502 00 to
help keep your vehicle's engine running smoothly and help prevent
the formation of harmful deposits , sometimes called "sludge", that
over time can lead to expensive repairs.
At the time of printing, engine oils available in the U.S. and Canada
that meet the exacting specifications of Audi oil standard VW 502 00
are synthetic engine oils. This does not mean, however, that every
synthetic engine oil will meet Audi oil standard VW 502 00. So always
be sure that you use an approved oil. To help prevent the formation of harmful deposits
use only oil with
the following specifications printed on the oil container:
Audi oil standard VW 502 00
Oil container labels may carry the specification singly or in combina­
tion with other designations and oil quality standards.
Viscosity
Engine oils are graded according to their viscosity. The proper
viscosity grade oil for your engine depends on climactic or seasonal
conditions where you drive. You can use oil with a viscosity grade of
SAE 5W40 across all temperature ranges for normal driving condi­
tions.
However, if engine oil viscosity grade SAE 5W40 is not available, you
can also use viscosity grade SAE 5W -30 or SAE OW -40 as long as it
meets Audi oil quality standard VW 502 00 specifications.
Because engine oil that meets the Audi oil standard may not be avail­
able everywhere when you need it, we strongly recommend that you
always carry with you an extra quart (liter) of oil that expressly
conforms to the VW 502 00 specification, in case you have to top off
the oil while on the road.
Only if the level of the oil is at or below the minimum mark - and no
oil that expressly conforms to Audi oil standard VW 502 00 specifica­
tions is available - may you top off with a high quality engine oil, pref­
erably synthetic-based, that meets ACEA A3, ACEA AS or ACEA BS or
API SL specifications, but even then, only in viscosity grades SAE 5W-
40, SAE SW-30, or SAE OW-40 . However, during the entire time
between oil change intervals, never top off with more than a total of
0.5 qt/liter engine oil that does not conform to Audi oil specification
vw 502 00.
For more information about engine oil that has been approved for
your vehicle, please contact either your authorized Audi dealer or
Audi Customer Relations at 1 (800) 822-2834 or visit our web site at
www.audiusa.com or www .audicanada.ca. Here you will also find a
current list of oils (manufacturers, brand names etc.) that conform to
Audi oil standard VW 502 00. ._

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Changing the engine oil
The engine oil and oil filter must be changed according to the mileage
(kilometers) and time intervals specified in your vehicle's Warranty
&
Maintenance booklet. Do not exceed these intervals -harmful
deposits from old engine oil can reduce engine performance and can
lead to expensive engine repairs.
Changing the oil at the recommended intervals is so very important
because the lubricating properties of oil decrease gradually during
normal vehicle use. If you are not sure when you have your oil
changed, ask your authorized Audi Service Advisor .
Under some circumstances the engine oil should even be changed
more frequently. Change oil more often if you drive mostly short
distances, operate the vehicle in dusty areas or mostly under stop­
and-go traffic conditions, or when you use your vehicle where temper­
atures stay below freezing point for long periods.
Detergent additives in the oil will make fresh oil look dark after the
engine has been running for a short time. This is normal and is not a
reason to change the oil more often than recommended.
Damage or malfunctions due to lack of maintenance
It is essential that you change your oil at the recommended intervals
using only engine oil that complies with Audi oil standard
VW
502 00 . Your Limited New Vehicle Warranty does not cover
damage or malfunctions due to failure to follow recommended main­
tenance and use requirements as set forth in the Audi Owner's
Manual and Warranty
& Maintenance booklet. Your dealer will have
to deny warranty coverage unless you present to the dealer proof in
the form of Service or Repair Orders that all scheduled maintenance
was performed in a timely manner. •
Safety first
Engine oil consumption
The engine in your vehicle depends on an adequate
amount of oil to lubricate and cool all of its moving parts.
In order to provide effective lubrication and cooling of internal
engine components, all internal combustion engines consume a
certain amount of oil. Oil consumption varies from engine to engine
and may change significantly over the life of the engine. Typically,
engines with a specified break-in period (see~
page 250) consume
more oil during the break-in period than they consume after oil
consumption has stabilized.
Under normal conditions, the rate of oil consumption depends on the
quality and viscosity of the oil, the RPM (revolutions per minute) at
which the engine is operated, the ambient temperature and road
conditions. Further factors are the amount of oil dilution from water
condensation or fuel residue and the oxidation level of the oil. As any
engine is subject to wear as mileage builds up, the oil consumption
may increase over time until replacement of worn components may
become necessary.
With all these variables coming into play, no standard rate of oil
consumption can be established or specified. There is no alternative
to regular and frequent checking of the oil level, see
Note.
If the yellow engine oil level warning symbol in the instrument
cluster _ lights up, you should check the oil level as soon as possible
~ page 284. Top off the oil at your earliest convenience~ page 285.
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS~
& in "Working in the engine
compartment" on page
280.
Vehicle care Technical data

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0 Note
Driv ing with an i nsufficient o il level is likely to cause severe damage
to the engine .
[I) Tips
• The oil pressure warning display 'e:r. is not an ind icator of the oil
level. Do not rely on it . Instead, check the oil level in your engine at
regular intervals, preferably each time you refuel, and always
before going on a long trip.
• If you have the impression your eng ine consumes excessive
amo unts of o il, we re commen d that yo u cons ult an aut ho riz ed Aud i
dealer to have the cause of your concern properly diagnosed . Keep in
m ind th at the accurate measure ment o f oil consumption re quires
great care and may take some time. An author ized Audi dealer has
ins truc tions about how to meas ure o il consumption acc ura tely .•
Checking the engine oil level
Fig . 22 1 MMI D isplay :
Oil level indi cat or
Read oil level
- Select : Funct ion button (C AR]> Oil level.
- Park you r veh icle so that it is horizont ally level. -
Shut t he engine off whe n it is at o perating temp eratu re.
- W hile at operat ing state te mperatu re, br ie fl y let the
eng in e r un at id le and then shut it o ff.
- W ait approx. two m inutes.
- Read the oi l leve l in t he MM I Di splay=> fig. 221. A dd
eng ine o il if the bar of the oi l leve l indicato r is nea r "m in"
=> page28 5
The oil leve l needs to be c hecke d at regular interva ls. The best times
t o do this a re whe neve r you refuel and prior to long tr ips.
Depend ing on the way the vehicle is drive n and the operating condi­
ti ons, oil consumpt io n can be up to a 1/ 2 quart pe r 6 00 m iles (0 .5
liter per 1000 km). Consumption may be higher w ithin the first 3000
mi les (50 00 km).
(I) Tips
The oil leve l ind icator in the MM I Display is only an in forma tion
display . If the o il level is too low, a m inimum oi l warning appea rs in
the inst rument cl uster . Ad d oil ~
page 285 . If the hood has been
opened, the c urrent oil leve l is shown in the ins trument cluste r th e
next time the ignition is sw itched on .•

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Adding engine oil
'e::1.
Fig . 222 En gin e
c om par tm ent: Oil filler
cap lo catio n
Before you c hec k a nythi ng in th e eng ine co mpart ment ,
always read and heed all WARNINGS=> & in "Working in
the e ngi ne compar tmen t" on
page 280.
- Unscr ew the cap~ to the eng in e oil fillin g ho le
=> fig. 222 .
- Care fu lly top of f wi th th e ap pro priate oil i n 0.5 liter doses.
- Screw the cap back o n the fil ling hole a nd close t he eng ine
hood .
- Check t he oi l leve l agai n after two minu tes=>
page 28 4.
- To p off the oil aga in , if nece ssary.
& WARNING
• While topping off, the oil must not come in contact with hot
engine parts -fire hazard!
• The oil filler cap must be properly secured to prevent oil from
being sprayed on the hot engine and exhaust system when the
engine is running -fire hazard!
• If your skin ha s come in contact with the eng ine oil , you must
s ubsequently cleanse it thoroughly .
Vehicle OP-eration
0 Note
• Chec k the oil leve l using t he radio o r the MMI*. If the message
Please reduce oil level appears, contact yo ur authorize d Au di dea ler
or o ther qual ifie d wo rks hop to have ex cess oil ex trac ted if nece ss ar y.
• Audi does not recommend the use of oil additives. They may
damage the engine and adver se ly affect your New Vehicle
Warranty.
<£' For the sake of the environment
• Under no circumstances can the o il come in contact with the
sewage netwo rk o r the soil.
• Observe and fo llow legal reg ulations when dis pos ing of empty oi l
conta iners .•
Changing the eng ine oil
We recommen d th at have your oil chan ged by an autho­
rized Audi dealer or a qualifi ed service stat ion .
Before you check anything in the e ng ine compartment, always read
and heed all WARNINGS~
& in "Wo rking in the eng ine com pa rt ­
me nt" o n
pag e 280.
The eng ine oil must be changed according to the intervals specified in
your Warran ty
& M ain tena nce book let. This is very import ant beca use
the lubricating propert ies of oil d iminish grad ually dur ing norma l
vehicle use .
U nder som e circumstances the eng ine oil s hou ld be chang ed mo re
frequently. C hange o il more often if you drive most ly short dista nces ,
operate the vehicle in dusty a reas o r under p redom inan tly s top-and­
g o traffic conditions, or have your ve hicle where temperatures remain
below freezing for e xtended per iods. .,
Vehicle care Do-it-yourselt service Technical data

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Det ergent add it ives in the o il w ill make fres h oil look dark a fter the
e n g in e has bee n ru nning for a s hort time. This is n orma l and is not a
reason to cha nge the oil mo re often t ha n recomme nded .
Beca use of the prob lem of proper disposal, a long w it h the s pec ia l
t o ols and n ecessa ry e xper tise req uire d, we stro ng ly recom men d th at
you have your o il changed by an a utho rize d
Audi dealer or a qualified
s erv ice stat ion.
If you choose to change your oil yourself , please note the following
im portant info rmat io n:
& WARNING
To reduce the risk of personal injury if you must change the engine
oil in your vehicle yourself:
• Wear eye protection .
• To reduce the risk of burns from hot engine oil, let the engine
cool down to the touch .
• When removing the oil drain plug with your fingers , stay as far
away as possible. Always keep your forearm parallel to the ground
to help prevent hot oil from running down your arm.
• Drain the oil into a container designed for this purpose, one
large enough to hold at least the total amount of oil in your
engine .
• Engine oil is poisonous . Keep it well out of the reach of chil­
dren.
• Continuous contact with used engine oil is harmful to your
skin. Always protect your skin by washing oil off thoroughly with
soap and water .
0 Note
Never m ix o il additives w ith your eng ine o il. The se a ddi tives c an
damage your engine and adverse ly affect your Audi Limi ted New
V ehicle Warranty .
W For the sake of the environment
• Before changi ng yo ur oil, fir st ma ke s ure you know w here you c an
pro perly dis pose of the used oi l.
• Always dispose of used eng ine o il prope rly . Do no t dump it on
garden soi l, wooded areas, into ope n streams o r down sewa ge dr ains.
• Recycle used engin e oil by taking it to a used eng ine oi l collect ion
facility in your area, or contact a serv ice station .•
Engine cooling system
Coolant
The engin e coolan t p erforms two fun ctions: it ke ep s t he
en gine from overheati ng and i t protects the engine fr om
fr eez in g in th e winte r.
Th e cooling system is sea le d and genera lly requ ires lit tle at tention.
Th e cooling system has been f illed at th e factory w it h a p erm anent
coo lant which does not need to be changed. T he coolant cons ists o f a
mix tur e of wa ter a nd the manufacturer's gly co l-basedcoolan t addi ­
tive
Gl2+ + antifreeze with anticorros ion addit ives (50% for USA
m odels; 60 % fo r C an ad ian models). This mixture both as su re s th e
necessary frost protect ion and protects meta l components in the
eng ine's coolin g sy stem fr om co rrosion and scaling .
It als o ra ises the
boiling point of th e coolant.
Do not re duce the concentration of the coo lant in the summer by
add ing p la in wate r.
The proportion of coolant additive must be at
least 50 % but not more than 60%
to mai ntain antifreeze protection
an d co olin g efficiency . If the co ola nt frost p ro te ct ion i s to o low , the
coo lant co uld freeze and damage the veh icle heating and engine
cooling system.
For year -round drivi ng, antifreeze is added at t he factory for tempe r-
atures down to: .,,