engine AUDI A5 CABRIOLET 2014 Repair Manual

Tire pressure
When towing a trailer, inflate the tires of your
vehicle to the cold tire pressure listed under
"Full load" on the label located on the driver's
side B-pillar (visible when the door is open).
Inflate trailer tires to trailer and tire manufac­
turers' specifications.
Lights
The headlight settings should be checked with
the trailer attached before driving off. Check
to make sure both vehicle and trailer lights
are working properly.
Safety chains
Be sure trailer safety chains are properly con­
nected from the trailer to the hitch on the ve­
hicle. Leave enough slack in the chains to per­
mit turning corners . When you install safety
chains, make sure they will not drag on the road when you are driving.
The chains should cross under the trailer
tongue to prevent it from dropping in case of
separation from the hitch .
Driving instructions
Driving with a trailer always requires extra
core and consideration.
To obtain the best possible handling of vehicle
and trailer, please note the following:
.,. Do not tow a loaded trailer when your car it­
self is not loaded.
.,. Be especially careful when passing other
vehicles.
.,. Observe speed limits .
.,. Do not drive at the maximum permissible
speed .
.,. Always apply brakes early.
.,. Monitor the temperature gauge.
Weight distribution
Towing a loaded trailer with an empty car re­
sults in a highly unstable distribution of
weight . If this cannot be avoided, drive at very
low speeds only to avoid the risk of losing
steering control.
Trailer towing 193
A "balanced" rig is easier to operate and con­
trol. This means that the tow vehicle should be loaded to the extent possible and permissi­
ble, while keeping the trailer as light as possi­
ble under the circumstances. Whenever possi­
ble, transfer some cargo to the luggage com ­
partment of the tow vehicle while observing
tongue load requirements and vehicle loading
considerations.
Speed
The higher the speed, the more difficult it be­
comes for the driver to control the rig . Do not
drive at the maximum permissible speed . Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -particularly
when going downhill.
Reduce vehicle speed
immediately if the trail­
er shows the slightest sign of swaying .
Do not
try to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds
for vehicles towing trailers are lower than for
regular vehicles .
Always apply brakes early. When driving downhill, shift into a lower gear to use the en ­
gine braking effect to slow the vehicle . Use of
the brakes alone can cause them to overheat
and fail.
Coolant temperature
The coolant temperature gauge<=> page 10
must be observed carefully . If the need le
moves close to the upper end of the scale, re­
duce speed immediately and/or turn off the
air conditioner.
If the coolant temperature warning light •
in the instrument cluster starts flashing, pull
off the road, stop and let the engine
idle for
about two minutes to prevent heat build-up .
A WARNING
Anyone not properly restrained in a mov­
ing vehicle is at a much greater risk in an
accident. Never let anyone ride in your car
who is not properly wearing the restraints
provided by Audi.
-
•
•

194 Trailer towing
Trailer towing tips
Important to know
Your vehicle hand les different ly w hen tow ing
a tr ailer because of the addit ional weight and
different weight distribution . Safety, perform­
ance and economy wi ll greatly depend on how
carefully you load your trailer and operate
your rig.
Before you actually tow your trailer, practice
turning, stopp ing and backing up in an area
away from traffic. Keep practicing until you have become comp letely familiar with the way
your veh icle-trailer combination behaves and
responds.
Backing up is difficult and requires practice.
Backing up with a trai ler genera lly requires
steering action opposite to that when backing
up your veh icle without a trailer.
Maintain a greater distance between your ve­
hicle and the one in front of you . You will need
more room to stop. To compensate for the
trailer, you will need a larger than normal
turning radius .
When passing, remember that you cannot ac­
celerate as fast as you normally would be­
cause of the added load. Make sure you have
enough room to pass . After passing, allow
plenty of room for your tra iler before chang­
in g lanes again.
Avoid jerky starts, sharp turns or rapid lane
changes.
{Dl Tips
- Do not tow a tra iler dur ing the break-in
period of your vehicle.
- If you tow a trailer, your A udi may re­
quire more frequent maintenance due to
the extra load
q page 264.
Parking on a slope
Do not park on a slope with a trailer . If it can­
not be avoided, do so only after doing the fol­ lowing :
When parking:
.. App ly the foot brake.
.. Have someone place chocks under both the
veh icle and the trailer wheels .
.,. With chocks in place, slowly release the
brakes until the wheel chocks absorb the
load.
.. Turn the whee ls towards the curb.
.. App ly the parking brake.
.. Move the selector lever to P.
When restarting after parking:
.. App ly the foot brake .
.. Start the engine.
.. Move the selector lever to D/S .
.. Release the parking brake and s lowly pull
out and away from the wheel chocks .
.. Stop and have someone retrieve the wheel
chocks .
(D Tips
If you move the selector lever of the auto ­
matic transmission to P before applying
the parking brake and before blocking the
whee ls, you may have to use more force
later to move the lever out of the P posi­
tion.

Fuel supply and filling
your f uel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environ­
ment clean and prevents engine damage.
Fuel recommendation
The fuel recommended for you r vehicle is un­
leaded premium
g rade gasolin e. A udi recom­
mends us ing TO P TI ER D etergent Gaso line
w ith a m inim um octane ra ting of 91 A KI ( 95
RON ). Fo r more inform ation on TOP TIER De­
tergent Gasoline, please go to the off ic ial
website (www.toptie rgas .com) .
The re commended gasoline octane rating for
your en gine can also be fo und o n a label loca t­
ed on t he ins ide of the fuel filler flap . This ra t­
ing may be specif ied as AKI or RO N.
Your veh icle may al so be operated using un­
l e aded regular g asoline w ith a min imum o c­
tane rating of 87 AK I/91 RO N. However, using
87 AK I/91 RON octa ne fue l w ill sli ghtly re­
d uce eng ine perfo rmance .
Use unleaded ga solin e only. Unleaded g aso­
line is available th rougho ut the USA, Ca nada,
and i n most E uropean countries . We recom­
mend that you do not ta ke yo ur vehicle to
areas or co untries where unleaded gasoline
may not be ava ilable.
F or mo re informat ion on refue ling your ve hi­
cle, see~
page 203.
Octane rating
Octane rati ng in dicates a gaso line's abili ty to
r es is t engi ne da mag in g "knoc k" ca use d b y
p remature ign ition and detona tion. Therefore,
b uying the correct grade of gaso line is very
i mportant to he lp prevent possible engine
damage and a loss o f engine performance.
Gasoline mos t common ly used in the Unite d
States an d Canada has the following octane
ratings that ca n usua lly be fo und on the filler
pump:
Fuel supply and filling your fuel tank 201
- Premium Grade: 9 1 -96 AKI
- Regular Grade: 87 -90 AKI
Explanation of the abb reviations :
AKI = Anti Knock Index = (R+ M)/2 = (RO N
+M ON)/2
RON = Research Octane Num ber
M ON = M otor Octane Number.
@ Note
- Do not use a ny fue l w it h octane rat ings
lower than 87 A KI or 9 1 RO N oth erwise
ex pensive engi ne da mage w ill occu r.
- Do
not use leaded gasoli ne. The use of
leade d gasoline w ill severely damage
yo ur vehicle's cata ly tic co nve rter and i ts
a bili ty to con trol exh aust emi ssion s.
Blended gasoline
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether )
You may use unleaded gasoline blende d with
alcohol or MTBE (commonly referred to as
oxygenates) if the blended m ixture meets the
fo llow ing criter ia:
Blend of gasoline methanol (wood alcohol or
methyl alcohol )
-Anti -kno ck index mus t be 87 A KI or higher.
- Blend mus t contain no more t han 3% me th-
a nol.
- Blend must contain more than 2% co-sol-
vents.
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must not conta in more than 10%
ethanol.
- Ve hicles w ith flex ible f uel e ngine : blend
m ust not contain more t han 85% ethanol.
Blend of gasoline and MTBE
- Anti-knoc k index must be 87 A KI or higher.
- Blend must contain no t mo re tha n 15%
MTB E.
•
•

202 Fuel supply and filling your fuel tank
Seasonally adjusted gasoline
Many gasoline grades are blended to perform
especially well for winter or summer driving. During seasonal change-over, we suggest that
you fill up at busy gas stations where the sea­
sonal adjustment is more likely to be made in
time.
CD Note
- Fuels containing a high percentage of
ethanol such as ESO and E85 may only be used in vehicles with flexible fuel en­
gines. Using high ethanol fuel in vehicles not equipped with flexible fuel engines
can cause severe engine damage.
- Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compo­ nents 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 particular fuel blend meets the
specifications, ask your service 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 responsibility of Audi and are not
covered under the New Vehicle or the
Emission Control System Warranties.
- If you experience a loss of fuel economy
or driveability and performance prob­
lems due to the use of one of these fuel
blends, we recommend that you switch
to unblended fuel.
Ethanol fuel (Bio -ethanol)
App lies to vehicles: with flexible fuel e ngi ne
You con recognize vehicles with a flexible fuel
engine by looking at the label on the inside of the fuel filler flap.
Vehicles with flexible fuel engines may be op­
erated with bio-ethanol fuels such as E85 (8S% ethanol and
15% gasoline) or with un­
leaded gasoline (91 AKI/ROZ 95). The vehicle
may also be operated with a mixture of these
fuels.
Your fuel consumption will increase when us­
ing bio-ethanol fuels due to the lower amount
of energy contained per unit volume in etha­
nol.
Warming up the flexible fuel engine in low temperatures
Due to the chemical composition of bio-etha­
nol, a certain amount of fuel ends up in the
engine oil when driving short distances in very
low temperatures . This fuel evaporates again
when the engine is warmed up.
II Please warm up engine.
If the driver message appears in the instru­
ment cluster display, drive with a warm en­
gine to reduce the oil level.
CD Note
- Never fill with methanol or with a higher
percentage of bio-ethanol than 85%
(E85). A higher percentage of bio-etha­
nol in the fuel can cause damage to the
engine or to the fuel system.
- If you use only E85, it is recommended
to fill the fuel tank completely with un­
leaded premium grade gasoline every
5,000 miles.
- If you experience starting, rough idle or
hesitation driveability problems, fill the
fuel tank completely with unleaded pre­ mium grade gasoline and drive it nor­
mally until the gasoline is used. See your
authorized Audi dealer if the problem
persists.
- Inform your authorized Audi dealer that
you are operating or have operated the
vehicle with E85.
- Read and follow the information and tips
about gasoline
c::> page 201. .,.

@ Tips
It may take longer to start the engine
when the outside temperature is very cold.
If possible, use winterized fuel if tempera­
tures are below freezing.
Gasoline additives
A major concern among many auto manufac­
turers 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 gasoline grades contain
substances that can cause deposits to collect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline
brands include additives to keep engine and
fuel systems clean, they are not equally effec­
tive.
Aud i recommends using TOP TIER Detergent
Gasoline. For more information on TOP TIE R
Detergent Gasoline, please go to the officia l
website (www.toptiergas .com) .
Afte r an extended pe riod of using inadequate
fuels, built-up carbon deposits can rob your
engine of peak performance.
CD Note
- Damage or malfunction due to poor fuel
quality is not covered by the Audi New
Vehicle Limited Warranty.
- Do not add aftermarket fuel additive
products to your fuel tank.
Fuel tank
Fuel filler neck
The fuel filler neck is located on the r ight rear
side panel behind the fuel filler flap.
If the power locking system should fail, you
can sti ll open the flap manually - for detailed
instructions see
c:> page 205.
You can find the fue l tank capacity of your ve ­
hicle in
c:> page262.
Fuel supply and filling your fuel tank 203
The label on the inside of the fuel fi lier f lap
te lls you the correct fue l for your vehicle. For
more information about fuel specifications,
see
c:> page 201.
Your vehicle fue l tank has an on -board refue l­
ling vapor recovery system. This feature helps
to prevent fuel vapors from escaping from the
tank and polluting the environment while you
refuel your vehicle. In order to fill the tank
proper ly while protecting the environment,
please follow this refueling procedure careful­
ly.
_&. 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 con­
tainers, fu ll or empty, may leak and could
cause a fire in a collision. If you must
transport fuel to use for your lawn mower,
snow blower, etc., be very careful and al­
ways observe local and state laws regard­
ing the use, transportation and storage of
such fuel containers. Make certain the con­
tainer meets industry standards (ANSI/
ASTM F852 - 86).
CD Note
Never drive your veh icle until the fuel tank
i s completely empty. The irregu la r supply
of fue l can cause misfiring. Gasoline cou ld
enter the exhaust system and damage the
catalytic converter.
•
•

204 Fuel suppl y and filli ng your fu el t ank
Refuelling
Fig. 169 Rig ht rear veh icle s ide: Open ing t he fuel fille r
fl ap
Fig. 170 Fu el fi ller fla p w ith attached fuel c ap
When activating the central lock ing, the fuel
fi ller flap is automatically un locked or loc ked.
Refue l the vehicle with the ig nition turned
off .
Tak ing th e fuel cap off
~ Turnoff the ignition .
~ Press the left side of the fuel filler flap to
open it
c::> fig. 169 -arrow- .
~ Unscrew fuel cap counter-clockwise and
hang it on the fuel filler flap
~ fig . 170.
Refu elling proc edure
~ Insert the fuel no zzle from the gasoline
pump into the fuel filler nec k as far as it will
go .
~ Select a medium refuelling ra te so that the
nozzle swi tches off a utomatica lly when the
tank is full.
Putting the fuel cap back on
~ After filling your tank , tw ist the fuel cap
clockwise as far as it w ill go .
~ Close the fuel fil le r flap. T
o avoid fuel spill ing or evaporating from the
fuel tank always close fuel cap properly and
completely .
A WARNING
-Im proper refueling or handling of fuel can
cause fire, explosion and severe burns.
- Fue l is highly flammable and can cause
severe burns and other injur ies.
- Failure to shut the engine off while refu­
eling and/or to insert the pump noz zle
fully into the fuel filler neck could cause fuel to spray out of filler neck or to over ­
f low . Fuel spray and overflowing fuel can
cause a fire .
- Never use a cellular telephone while re ­
fueling . The electromagnet ic rad iat io n
can cause sparks that can ignite fuel va­
pors a nd cause a fire .
- Never get back into your vehicle wh ile re­
fue ling.
If in exceptional circumstances
you mus t get back in your vehi cle while
ref ueling, make ce rtain that you close
the door and touch meta l to discharge
static electricity before touching the fill ­
er nozzle again . Static e lectr icity can
cause sparks that can ignite fuel vapors re leased during refueling .
- Never smoke or have an open flame any­
where in or near your veh icle when refu­
eling or filling a portable fue l conta iner .
- For your safety, we strongly recommend
that you do not travel with a portable
fue l conta iner in your vehicle . The con­
tainer, fu ll o r empty may leak and could
cause a fire, especially in a crash .
- If, u nder exceptional c ircumstances, you
must transport a portable fuel conta iner,
p lease observe t he follow ing:
- Never fill a portable f uel container
whi le it is anywhere in or on the vehicle
(for example, in the luggage compart­
ment, or on the trunk). Static electrici­
ty can build up while filling and can ig­
ni te f uel vapors causing a fire .
- Always place a portab le fue l conta iner
on the ground before fi lling.

-Always keep the f iller nozzle complete­
ly inside the portable conta iner before
and during filling.
- If filling a portable container made of
metal, the filler nozz le must always be
in contact with the container. Th is w ill
he lp prevent static electricity from dis­
charging and cause a fire .
- Never spi ll fuel inside the vehicle or
luggage compartment. Fuel vapors are
h ighly f lammable .
- Always observe local and state/provin­ cial laws regarding the use, storage
and tra nsporta tion of fuel containers.
- Make certa in the fuel container meets
industry standards (ANSI
I ASTM
F852-86).
(D Note
If any fuel has spilled onto the car, it
should be removed immediate ly to prevent
damage to the paint.
@ For the sake of the environment
As soon as the correctly operated nozzle
sw itches off automatically for the fi rs t
time, the tank is full. Do not try to add
more fue l because fuel may spill out. In
add it ion, the expans io n space in the fuel
t ank will be fi lled -ca using the fue l to
overflow when it becomes warm and pol ­
lute the env ironment.
@ Tips
- Runn ing yo ur engine while re fuelling
may cause vapors to escape or even
cause fue l to spill out of the tank . This
would then shut off the fuel nozzle be­
fo re the tank is fu ll.
- Do not refuel your vehicle w ith the igni ­
tion t urned on. The fuel gauge may oth­
erwise not ind icate the correct fue l level
after refuelling.
- The fuel filler flap of your vehicle is not locked when you lock the vehicle from
the i nside.
Fu el suppl y and filli ng your fuel t ank 205
Unlocking the fuel filler flap by hand
You can open the fuel filler flap by hand if the
power locking system should fail .
Fig . 1 71 Lu ggage co mpartme nt: ope ning the side trim
Fi g. 172 Lu ggage co mpa rtme nt: Eme rgency ope ning
of fue l fil ler flap
The emergency opening mechanism is located
behind the right side trim panel in the lug­
gage compartment .
Opening the side trim
... Insert a tool such as a screwdriver
~ page 243 or the emergency key into the
r ight side of the upper gap
c::> fig. 171 .
... Pry upward to release the trim.
Fuel filler door emergency release
... Loosen the st rap from its bracket a nd p ull
on it
c::> fig . 172. Yo u can now open the fuel
filler flap as usual~
page 204.

206 Checking and filling
Checking and filling
Engine hood
Releasing and opening the engine hood
The engine hood is released from inside the
vehicle .
Fig . 173 D river' s side footwe ll: e ngin e hood re lease
lever
F ig. 1 74 Re lease lever u nde r the eng ine hood
Before openin g the engine hood, ma ke s ure
that the windshie ld w ipers are flat against the
windshield. Otherwise, they co uld damage the
pa int on the hood .
... Pull the release lever on the left unde r the
inst rument panel in the direction of the ar­
row
c;, fig . 173.
... Raise the hood slightly r::;, .&,
... Press the rocke r swi tch u nder the hood up­
ward
c;, fig . 174 . Th is re leases the catch .
... Ope n t he hood.
A WARNING
Hot engi ne co olan t ca n bur n you.
- T o redu ce the r is k o f being burned, never
op en t he ho od if yo u see or hea r steam
or cool an t esc aping from the engine
c ompartment. Wait unti l no steam or co
olant can be seen or heard before care ­
fu lly opening the hood.
Closing the engine hood
... Pull the hood down until the pressure from
the struts is reduced .
... Le t the hood
drop down and latch in p lace.
Do not try to push it shut; it may fail to en­
gage
r::;, .&, .
A WARNING
-
A ho od th at is not co mpletely latched
could fly u p an d block your view while driv­
in g.
- Wh en you close the engi ne ho od, ch ec k it
t o make sure the sa fe ty ca tch has pro pe r­
ly engaged . The hood s hould be flush
wit h the surroun ding vehicle body pa rts .
-If you notice while driv in g that t he hood
is not secured prope rly, sto p at once and
close it.
Working in the engine compartment
Be especially ca reful whenever you work in
the engine compartment.
Whenever you must perform any work in the
engine compartment, for example checking
and filling different fluid s, there is a ri sk of
injury , burns and accidents . To prevent per­
sonal injury always observe the following
WARNINGS. The engine compartment of any
vehicle is a hazardous area
r::;, ,&. .
A WARNING
-To help avo id injury, before yo u check any-
thing unde r the hoo d:
- Turn off the eng ine.
- Remove the ignition key.
- Ap ply the park ing brake .
- Move selector leve r of automatic t rans -
miss io n to "P" (Par k).
- Alway s le t the eng ine cool d own. Ho t
components w ill bur n skin on contact .

-To reduce the r isk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before ca re­
fully opening the hood .
- Keep children away from the engine com ­
partment.
- Never spill flu ids on hot engine compo­
nents. They can cause a fire .
- Never touch the radiator fan. The aux ili­
ary e lectr ic fan is temperature controlled
and can switch on suddenly .
- Never open the coolant reservoir cap
when the eng ine is still warm . The cool­
ant system is pressur ized and hot coo l­
ant could spray out.
- Protect your face, hands and arm from
steam or hot eng ine coolant by placing a
thic k rag over the cap when you open the
coolant reservoir.
- Do not remove the engine cover under
any c ircumstances. Th is increases the
risk of bu rns.
- If wo rk on the fuel system or the electri­
cal sys tem is ne cessary:
- Always disconnect the battery.
- Never smoke or work near heaters or
open flames . Fluids in the engine com­
partment co uld start a fire.
- Keep an approved fire extinguisher im­
mediately ava ilable.
- To avoid electrical s hock and persona l in­
jury 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 repa ir
with the engine running:
- Fir st, fully apply the parking brake,
move se lector lever of a utomatic trans­
mission to "P" (Park).
Checkin g and fillin g 207
-Always use extreme caut ion to prevent
clothing, jewelry, or long hair from get­
ting caught in the radiator fan, V-be lts
or other moving parts, or from contact­
i ng hot parts . Tie back hair before
starting, and do not wear clothing that
will hang o r droop into the engine.
- Minimize exposure to em ission and
chemical hazards
9 .&, .
&_ WARNING
Califo rnia Proposition 65 Wa rni ng:
- Engi ne exhaust, some of its const ituents,
and certa in vehicle components contain
or emit chemi cals known to the State of
California to cause cancer and birth de­
fects and reproduc tive harm. In addition,
certain fl uids con tained in vehicles and
certain products of component wear con­
tain or emit chemica ls known to the
State of California to cause cancer and
birth defects or other reproductive harm.
- Battery posts, terminals and related ac­
cessories conta in lead and lead com ­
pounds, c hemicals known to the State of
California to cause cancer and reproduc ­
tive harms. Wash hands afte r handling .
(D Note
When adding flu ids, always make sure that
they are poured into the proper conta iner
or f iller opening, otherwise serious dam­
age to vehicle systems w ill occur .
@ For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly . If
you see spots from oil or other veh icle flu­
i ds, have you r vehicle inspected by an au­
thori zed Audi dealer. •
•

208 Checking and filling
Engine compartment
Engine compartment
These are the most important items that you can check.
Fig . 17 5 Typical layout for containers and eng ine o il filler cap
(D Eng ine oi l filler cap ("1::::r.) . . . . . 211
@ Jump start point(+) under a cov-
er .. .. .... ... ....... .... ..
219, 256
@ Brake fluid reservo ir (0)) . . . . . 216
@ Coolant expansion tank (-L) . . . 214
® Jump start point(-) with hex
head sc rew ..... .......... ..
219, 256
® Windshield/headlight* washer
. (" ') container o ........ ... .. . 220
The pos ition of the engine o il fi lling hole
¢ fig . 175 (item @) can differ depending on
the engine design.
A WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ¢.&. in Working in the engine
compartment on page 206.
-
Engine oil
· Engine oil specifications
The engine in your Audi needs the right kind
of oil.
The eng ine in your Audi is a sophist icated
power plant that was bu ilt to exacting specifi­
cations . Th is engine needs the right k ind of
engine oil that meets specifications regarding
quality and v iscosity so that it can run
smooth ly and reliab ly. Choosing the right o il
and changing oil within the t ime and mileage
i n tervals prin ted in you r vehicle's Warranty
&
Maintenance booklet matters a lot more to ­
day than it did years ago . Aud i has developed
a specia l quality standard for engine oil that
will help assure that your vehicle 's engine wi ll
get the lubr ication it needs for proper opera-
t ion . ..,_