2018 AUDI A5 COUPE engine

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filler door. For additional information on fuel,
see
~page 322.
The fuel tank capacity of your vehicle is listed in the
T ec hnical Dat a section ~ page 388.
To avoid fuel spill ing or evaporating from the fuel
tank always close fuel cap p roperly and com­
p letely . An improperly closed fue l filler cap may
a lso cause the MIL
lamp~ page 24 t o come on.
A WARNING -
Not paying attention when fueling or han­
dling fue l incorrectly can lead to fires, exp lo ­
sions or serious in juries.
-Fuel ignites easily and can cause serious
burns and other injuries.
-If you do not switch the engine off when fu ­
eling and/or do not insert the fuel nozz le
completely into the tank opening, fue l can
leak out or run over. Leaked fuel can ignite
and start a fire.
-Do not use the telephone whi le fueling. The
electromagnetic rays can cause sparks,
wh ich can ignite fuel vapors and start a fire.
-Do not sit in your vehicle while fueling. If
you must make an except ion and enter your
vehicle again wh ile fue ling, close the door
and touch meta l to discharge static electric­
ity befo re touch ing the fue l nozzle. Static
elect ricity can create spar ks, wh ich can ig ­
ni te vapo rs when fue ling.
-Do not smoke or have an open flame in the
area when fueling your veh icle o r filling a
f uel contai ner because th is increases the
risk of an explos ion .
-For yo ur safety, carrying f uel containers in
yo ur vehicle is no t recommended. Whethe r
f ull or empty, the conta iner can leak a nd
cause a fire in the event of an accident .
-If you must make an exception and trans­
port a fuel container, note the following :
-Never fill the fuel container with fuel
while it is in or on the vehicle. Stat ic elec­
tr icity is d ischa rged when filling wh ich can
cause the f uel vapors to ignite and in­
creases the r isk of an explos ion.
-Always p lace a fuel containe r on the
g ro u nd before fi llin g.
Ch eck ing and Filling
-Always hold the fue l nozzle completely in
the fuel container when filling.
-If the fuel container is made of metal, the
fuel nozzle must always be in contact with
the container when filling it with fuel. This
prevents stat ic electricity from discharg­
ing .
-Never spill fuel in the vehicle or the lug­
gage compartment. Evaporated fuel is ex­
plosive and increases the risk of serious in­
jury or death .
-Follow legal requirements when using,
stor ing and transporti ng fuel conta iners .
-Make sure the fuel container conforms to
industry standards (ANSI/AS TM F8S2-86).
@ Note
-Remove spilled fuel from vehicle pa int im­
mediately, because it can damage paint.
-Never drive unti l the fuel tank is complete ly
empty. The irregular supply of fue l that re­
sults from that can cause eng ine misfires.
Uncombusted fuel will enter the exhaust
system and increase the risk of damage to
t he catalytic converte r.
-If the fue l tank runs complete ly empty in a
vehicle with a
diesel eng ine , the ignition
must remain swit ched on fo r at least 30
se conds afte r ref ueli ng before starti ng the
eng ine. It may take longer than usual fo r
t he engine to s tart, even up to a minu te.
T his is because the air must first b leed out
of the fue l system when starting the eng ine.
@ For the sake of the environment
Do not overfill the fuel tank, otherwise fuel
can leak out when the veh icle is warming up.
(D Tips
D iesel ve hicles are eq uipped w ith a diesel mis­
fueling guard .
It allows the vehi cle to be fu­
eled on ly with a diesel fuel pump nozzle. A
worn or damaged nozzle or a nozzle that is
too small may not be able to open the diese l
misfueling guard. If this is the case, try turn­
i ng the nozzle before inserting it in the fue l
filler neck, use a different fuel pump, o r see
325

This message appears when there is only enough
Ad Blue left to drive the distance indicated in the
i nstr ument cluster . Fill the Ad Blue .
• Refill with at least x qt (l) AdBlue. No en·
gine start in
x mi (km ). See owner 's manual
This message appears when there is only eno ugh
Ad Blue lef t to d rive the distance indicated in the
i nstr ument cluster. Fill the Ad B lue. O therwise
the engine will not start again if you stop it once
the distance indicated has been driven .
• Refill with at least x qt (l) AdBlue . Engine
start n ot possibl e. See owner 's manual
This message appea rs when the Ad Blue tank is
empty. Fill the AdB lue. Otherwise you will not be
ab le to s tart the engine aga in once yo u stop it.
The AdBlue must be refilled when the amount in
the tank has reached the minimum level
¢ page 327, Preparation.
Incorrect filling /system ma lfunction
A message appears if the Ad Blue tank was filled
with a fluid other than AdBlue and the system
has detected that the tank was f illed incor rectly,
or if there is a system malfunction .
II Ad Blue: malfunct ion ! No engine start in
x mi (km ). Se e owner's manual
This message appears when it is only possible to
drive the d istance ind icated in the instrument
cluster . Drive to the nearest author ized Audi
dealer o r authorized Aud i Serv ice Facility to have
the malfunction corrected . Otherwise the engine
w ill not start again if you stop it once the d is­
tance indicated has been dr iven .
• Ad B lu e: malfunction! No engine start poss i­
ble . See owner' s manual
This message appears if the system has detected
that the tank was filled incorrectly or that there
is a malfunction . Drive immediately to the near ­
est autho rized Aud i dea ler or authorized Aud i
Service Facility to have the malfunction correct­
ed. Othe rwise you will not be able to start the en­
g ine again once you stop i t.
Checking and Filling
Preparation
Applies to: vehicles with selective cata lytic reduction
Fig. 272 R ight rear s ide o f th e ve hicle: removing t he Ad Bl­
u e cap
The Ad Blue tank ope ning is located near the d ie­
se l tank opening. Add at least the amount of
AdB lue shown in the instrument cluster display.
This is the minimum amount required to ensure
the system detects the refilling and to start the
engine. You can add a maximum of 6.3 gallons
(24 L).
Requirement: the request to add Ad Bl ue must
appear in the instrument cluster display.
.. Switch t he ignit ion off .
.. Open the tank filler door¢ page 324 .
.. Turn the ta nk filler neck cap to the left to re­
move
¢fig . 272.
.. Refill Ad Blue us ing a pump noz zle ¢ page 328,
a canister ¢ page 328 or a bott le ¢ page 328 .
A WARNING ,~ -Ad B lue can irritate the s kin, eyes and respira­
tory sys tem.
If th ere is contact with t he flu id,
flus h immed iate ly w ith plenty of wa ter. Con­
su lt a phys icia n if necessary .
(D Note
- Only use Ad Blue that conforms to the
standard ISO 22241-1. Do not m ix any addi­
tives with the Ad Blue and do not dilu te it
w ith wate r.
- Do not add AdBl ue to the diesel tank or add
diese l fuel to t he A d Bl ue tank. Do not s tart
t he engine un de r any c ircumst ances if th e
wrong fuel is filled in the tan k. There is a
327

Checking and Filling
risk of damaging the fuel tank system and
the engine. See an authorized Audi dealer or
authorized Audi Service Facility for assis­
tance.
- Ad Blue attacks surfaces such as painted ve­
hicle components, plastic and carpet. Re­
move the fluid as quickly as possible with a
damp cloth and plenty of cold water. If the
Ad Blue has already crystallized, use warm
water and a sponge . AdBlue residue that is
not removed will crystallize and can damage
the affected surface.
- Do not store refill bottles or canisters per­
manently in the vehicle. If the container
leaks, the escaping AdBlue could damage
the vehicle interior.
- Do not allow AdBlue to come into contact
with clothing. If there is contact with the
fluid, flush immediately with plenty of wa­
ter.
(D Tips
Follow the Ad Blue manufacturer 's instruc­
tions for use and storage.
Refilling AdBlue using a pump
Applies to: veh icles with selective catalyt ic reduction
.,. Open the tank filler door c::> page 324, fig. 268.
.,. T urn the tank filler neck cap to the left to re­
move
c::> page 327 , fig . 272.
.,. Refill Ad Blue until the pump noz zle switches
off for the first time
c::> (D .
.,. Close the filler neck . c::> page 329, Completing
AdBlue refill
(fl Note
- The pump nozzle handle must be pointing downward when filling. Otherwise the pump nozzle will not switch off automati­
cally
c::> Q) in Preparation on page 32 7.
- Do not continue filling once the pump noz­
zle automatically switches off for the first
time. The AdBlue tank system could be
overfilled and leak Ad Blue
c::>(D in Prepara­
tion on page 327.
328
Refilling AdBlue using a canister
Applies to: vehicles with selective cata lytic reduction
®
+®
Fig. 273 Caniste r w ith attachable hose
.,. Remove the cover from the refill canis ter c::> A
in Preparation on page 3 27, c::>(D in Prepara ­
tion on page 32
7 .
.,. Secure the end of the hose (D on the opening in
the canister @by turning the hose to the right.
.,. Remove the cap@from the other end of the
hose @ .
.,. Position the end of the hose @on the filler
neck in the vehicle and turn the hose to the
right to tighten it .
.,. Lift th@ canister up and then tip it. Continue
holding the canister in a tipped position until it
is empty or until no more fluid flows into the
tank .
.,. Remove the canister and close the filler tube
c::> page 329, Completing AdBlue refill .
(D Note
Only use refill canisters that are approved for
your vehicle. Using other systems can cause Ad Blue to leak .
(D Tips
-An authorized Audi dealer or authorized
Audi repair facility can tell you which refill
canisters are approved for your vehicle .
- A permitted refill canister contains approxi­
mately 1.3 gallons (5 liters) of Ad Blue.
Refilling AdBlue using a bottle
Applies to: vehicles with selective catalytic reduction
.,. Remove the cap from the refill bottle c::> A in
Preparation on page 327,
c::> (D in Preparation
on page 327.
..,.

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• Position the bottle on the filler tube and turn
the bottle clockwise unti l it stops turning.
• Press lightly against the bottom of the bottle
to empty it. Continue pressing the bottom of
the bottle until it is empty or until f luid stops
flowing into the tank .
• Remove the bottle and seal the filler neck
~ page 329, Completing AdBlue refill .
(D Note
Only use refill bottles that are approved for
your veh icle. Us ing other systems can cause
Ad Blue to leak.
-You can obta in refill bottles from an author­
i zed Audi dealer or author ized Audi Service
Fac ility.
- A perm itted refill bottle contains approxi­
mately 0.5 gallon ( 1.9 liters) of Ad B lue.
Completing AdBlue refill
Applies to: vehicles with selective catalytic reduction
Closing th e filler neck
• Turn the Ad Blue cap to the right on the filler
tube u ntil the cap clicks into p lace
c;> .&. in
Preparation on page 32
7, c;> (Din Preparation
on page 327 ..
• Then press on the left side of the tank door un -
ti l it latches.
After filling
The vehicle must be driven so that the system
recognizes t hat the Ad Bl ue was refilled. This can
take severa l min utes .
• If there was no Ad Blue left in the tank and a
range of O mi (0 km) was shown in the display ,
switch the ign ition on for about 3 0 seconds be­
f ore star ting the engine .
(D Tips
Ad Blue in the tank can free ze at very low tem­
pe ra tures. If this happens, the system will
no t detect t hat the Ad Bl ue was refilled and i t
wi ll continue to inform you of the low Ad Blue
Ch eck ing and Filling
level. The message t urns off as soon as the
tank thaws out again .
Emissions control
systems
Catalytic con verter
Applies to: vehicles with gasoline engines
T he vehicle may only be driven with un leaded
gasoline, otherwise the catalytic converter will be
destroyed.
Never drive until the tank is compl ete ly empty .
The irregu lar supply of fuel that resu lts from that
can cause eng ine misfires. Uncombusted fuel will
enter the exhaust system, which can cause over­
heating and damage to the catalytic converter .
Diesel particulate filt er
Applies to: vehicles with diesel engines
The diese l particu late filter filters near ly all of
the soot particles out of the exhaust. The filter
cleans itself automatically under norma l driving
condit ions. If the filter cannot clean itself (for ex­
ample, because you are only driving short distan ­
ces), the filter becomes clogged with soot and
the
1\1 i ndicato r light for the diese l part iculate
filte r tu rns on
c;> page 33.
_& WARNING
The tempera ture of the exhaus t sys tem is
high, bot h when driv ing and a fter stoppi ng
the engine.
- Never tou ch the e xhaust tail pipes once they
have become hot. This cou ld res ult in burns .
- Do not par k your veh icle over flamm ab le
materia ls such as grass or leaves because
the high temperature of the emissions con­ trol system (catalytic converter or diesel particu late filter) cou ld start a fire.
-Do not app ly underbody protectant in the
exhaust system area, beca use this increases
the risk of f ire.
329

Check ing and F illing
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
Fo r wo rk in th e engine compa rtmen t, s uch as
c h ec kin g and filli ng flu id s, th ere is a risk of in­
j u ry, sc aldin g, ac cide nts, a nd b urn s. For this
rea son, foll ow all the warning s and gener al
s a fe ty p recaution s pr ov ided in the f ollow ing in·
f o rm ation . Th e en gine c omp artmen t is a dan ­
ger ous are a.
q ,&.
_& WARNING
- T urn the engine off.
- Switch the ign ition off .
- Set the parking brake .
- Shift the gearshift lever to neutral in vehicles with a manual transm ission and se­
lect the P selecto r lever pos ition in vehicles
with an automatic transmission.
- Let the engine coo l down .
- Never open the hood when there is steam or coolant escaping from the eng ine compart­
ment, because there is a risk that you cou ld
be burned. Wait until no steam or coolant is
escaping.
- Keep ch ildren away from the engine com­
partment.
- Never spill f lu ids on a hot engine. These flu­
ids (such as the anti-freezing agent con­
ta ined in the coolant) can ignite .
- Avoid sho rt circu its in the electrical system.
- Whe n working in the engine compartment ,
remember that the rad iator fan can sw itch
on even if the ign ition is switched off, which
increases the risk of in jury.
- Never open the cap on the coolant expan­
sion tank when the eng ine is warm. The
cooling system is under pressure.
- T o protect your face, hands, and arms from
hot steam or coolant, cove r the cap with a
large cloth when opening .
- Do not remove the engine cover under any
c ircumstances. This increases the risk of
burns .
330
-If tests need to be performed with the en­
gine running, there is add itiona l danger due
to mov ing components (such as the r ibbed
belt, alternator and rad iator fan) and from
the high-voltage ignition system .
- Do not under any circumstances activate the
throttle inadvertently (for example, by hand
from the engine compartment) if the veh i­
cle is stat ionary but the eng ine is r unning
and a gear is engaged. Otherwise, the veh i­
cle will start to move immediately and this
could result in an acc ident.
- Pay attent ion to the following warnings
when work on the fue l system is required :
- Do not smoke.
- Never work near open flames.
-Always have a working fire extinguisher
nearby .
-All work on the battery or electrical system
in your vehicle can result in inju ries, chemi­
cal b urns, acc idents or burns. Because of
this, all work must be performed
onl y by an
author iz ed Audi dealer or authori zed Audi
Serv ice Facili ty .
-To reduce the r isk of e lectr ic shock and in­
jury, never touch the follow ing components
when the engine is running or is being start­ ed:
- Ign ition cable
- Other components in the electronic high- vo ltage ign ition system
- If you must che ck or perform wo rk on the
engine whi le it is running:
-First, set the parking brake and and move
the gearshift lever to neutral (for manual
transm issions) or select the P selector lev­
er posit ion (for automatic transm issions) .
- Always proceed with extreme caution so
that clothing, jewelry or long hair do not become caught in the rad iator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie bac k long hair befo re beginn ing
work and do not wear clothing that can
hang down into the engine.
-Lim it yo ur exposure to exhaust and chemi­
cals to as short a time as possible
q .&. .

,&_ WAR NING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and reproduct ive harm. In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chem icals known to the State of California
to cause cancer and birth defects or other reproduct ive harm.
- Battery posts, terminals and related acces­ sories contain lead and lead compounds,
chem icals known to the State of California
to cause cancer and reproduct ive harms.
Wash hands after handling.
(D Note
When filling flu ids, be sure not to mix the flu­
ids up . Otherwise severe ma lf u nctions and en­
gine damage w ill occur.
@) For the sake of the environment
You shou ld regularly check the ground under
your vehicle in o rder to detect leaks qu ickly .
If
there a re visible spots from oil or other fluids,
bring your vehicle to an authorized Aud i dea l­
er or authorized Audi Service Facility to be
checked.
Opening and closing the hood
The hood is released from inside the vehicle.
Fig. 274 Driver footwell: release leve r
Checki ng an d Fill in g
Fig. 275 Unlocked hood : lever
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be damaged .
Opening the hood
" With the driver's doo r open, pull the lever be­
low the instrument panel in the direction of the
arrow
r:;, fig . 2 7 4.
" Ra ise the hood slightly ¢.&_ .
"Press the lever ¢ fig. 275 in the direct ion of the
arrow. This releases the hooks .
"Open the hood .
Closing the hood
" Push the hood down until you override the
force of the str uts.
" Let the hood fall lightly into the latch . Do not
press it
in. ¢ .&_ .
A WARNING ,..___
-Never open the hood when there is steam or
coo lant escaping from the engine compart ­
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
- For safety reasons, the hood must always be
closed securely while driv ing. Because of
this, always check the hood after closing it
to make sure it is latched correctly . The
hood is latched if the front corners cannot
be lifted.
- I f you notice that the hood is not latched
while you are d riving, s top immed iately and
close it, because driving when the hood is not latched increases the r isk of an accident . .._
331

Checking and Filling
-If the hood is not latched completely, it
could fly up while you are driving and ob­
struct your vision.
Engine compartment overview
The most important check points.
Fig. 276 Typ ical location of the reservoir and the engine o il filler o penin g
@ Washer fluid reservoir (W) c:> page 339
@ Jump start po int( +) under a cover,(-) w ith
hex head sc rew
c:> page 339 c:> page 381
@ Engine oil filling open ing ( page 334
© Eng ine oil label* w ith VW standard
c:> page332
® Coolant expansion tank (- L) c:> page 336
® Brake fluid reservoir ((0)) c:> page 33 7
The location of the engine oil fill ing opening and
the coolant expansion tank
c:> fig. 2 76 (items @
and@) may differ depending on the engine ver­
sion .
332
8,_ WARNING
Read and follow all WARNINGS befo re check­
ing anything in the engine compartment
c:>page330.
Engine oil
Engine oil specifications
The engine oil used must conform to exact speci ­
fications.
The serv ice interval d isplay i n the instrumen t
clus ter o f your veh icle will inform you when it is
time for an o il change . We recommend that you
have your oi l changed by an author ized Audi Serv-
ice Advisor.
..,_

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If you must add oil between oil changes, use an
oil that matches the Audi oil quality standard listed on the st icker. The sticker is located at the
front of the engine compartment
c> page 332,
fig . 276.
Audi re comm end s
Ocastrot /[g/j;t{E'g Frtw.::<.. ·-:dr,,JA.L
A ud i recommends Longlife h igh perform ance
e ngin e oil from Audi Genui ne Part s
Using the proper engine oil is important for the
functionality and service life of the eng ine. Your
engine was factory -filled with a high-quality oil
which can usua lly be used throughout the entire
yea r.
Note
Your Limited New Vehicle Warranty does not
cover damage o r malfunctions due to failure
to follow recommended maintenance and use requirements as set fo rth in the Aud i Owner's
Manual and Warranty
& Maintenance booklet.
- Use only a high q ual ity eng ine oil that ex-
pressly complies with the Aud i oil q uality
standard specified for your vehi cle's engine .
Using any other oil can cause serious engine
damage .
- Do not mix any l ubricants o r other additives
into the engine oil. Doing so can cause en­
gine damage.
(D Tips
If you need to add oil and there is none availa ­
b le that meets the Audi oil quality standard
your eng ine requires, you may add a total of
no more than 0.5 qt (0.5 l) of a h igh-quality
"synthet ic" o il that meets the following speci­
fications .
- Vehicles with gasoline eng ine: ACEA A3 or
API SM with a viscosity grade of SAE OW-30,
SAE 5W -30 or SAE 5W-40 .
- Vehicles with d iesel eng ine : ACEA C3 or
API CF with a v iscosity grade of SAE OW-30
or SAE 5W -30 .
- For more information about engine o il that
has been approved for your vehicle, please
contact e ither you r authorized Audi dea le r
or A udi C ustome r Relat ions at
Ch eck ing and Filling
1 (800) 822 -2834 or visit our web site at
www.audiusa .com or www .audicanada .ca.
Engine oil consumption
The engin e in your v ehicl e dep ends on an ad e­
quat e amount of oil to lubricate and cool all of
its moving parts.
In order to provide effect ive lub rication and cool­
ing of inte rnal engine components, all inte rnal
combustion engines consume a certain amount
of oil. Oil consumption varies from eng ine to en­
gine and may change significantly over the life of
the engine. Typ ically, engines w ith a specified
break -in period (see
c> page 86) consume more
o il dur ing the break-in per iod than they consume
after oil consumption has stabilized .
Under normal cond itions, the rate of oil con­
sumption depends on the qua lity and viscos ity of
the oil, the RPM (revolutions per m inute) at
which the engine is operated, the amb ient tem­
perature and road condi tions. Further facto rs a re
the amo unt of oil di lution from water co ndensa­
tion or fue l resid ue a nd the oxidation level of the
oi l. As any engine is subject to wear as mileage
builds up, the oi l consumption may increase ove r
time unt il replacement of worn components may
become necessary.
With a ll these variab les coming into play, no
standard rate of oi l consumption can be estab­
lished or spec ified . There is no alternative to reg­
ular and frequent checking of the oi l level, see
Note .
If the y ellow engine oil leve l warning symbo l Bl
in the instrument cluster lights up, you should
check the o il level as soon as possible
c> page 334. Top off the o il at your earliest con­
venience
c> page 334 .
A WARNING
--Before you check anyth ing in the eng ine com-
partment, always read and heed all WARN­
I NGS
c> .&. in Working in the engine compart-
ment on
p~e 330. ~
333