light AUDI A5 COUPE 2018 Owners Manual

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body and the front of the passenger compart­
ment, the airbag can inflate comp letely and pro­
vide supp lemental protect ion in certain frontal
collisions.
& WARNING
Not using a booster seat, using the booster
seat improperly, incorrectly installing a boos­
ter seat or using the vehicle safety belt im­ properly increases the risk of serious personal
injury and dea th in a collision or other eme r­
gency sit uat ion. To help red uce the risk of se­
rious personal injury and/or death:
- T he shoulder be lt must lie as close to the
center of the child's collar bone as possible
and must lie f lat and snug on the upper
body. It must never lie across the throat or
neck. The lap belt must lie across the pelvis
and never across the stomach or abdomen.
Make sure the belt lies flat and snug. Pull on
the belt to tighten if necessary .
- Failure to properly route safety belts over a
child's body will cause severe injuries in an
acc ident or other emergency situation
¢ page 268.
- The rear side of the child safety seat should
be pos itioned as close as poss ible to the
backrest on the vehicle seat. Adjust or re­
move the rear seat head restraint if it is d if­
ficult to install the child seat with the head restra int in place¢
page 74. Install the
head restraint again immediately once the
child seat is removed . Driving without head
restraints or w ith head restraints that are
not properly adjusted increases the risk of
serious or fatal neck injury dramatically.
- Never let a child put the shoulder belt under
the arm or beh ind the back, because it cou ld
cause severe injur ies in a crash.
- Children on the front seat of any car, even with Advanced Airbags, can be seriously in­
jured or even killed when an airbag inflates.
- Never let a child stand or kneel on any seat,
for example the front seat.
- Never let a child ride in the cargo area of your vehicle .
- Always remember that a child leaning for­
ward, sitting sideways or out of position in
Ch ild safety
any way du ring an accident can be struck by
a dep loying airbag. Th is will result in serious
personal injury or death.
- If you must install a booster seat on the
front passenger seat because of exceptional
circumstances the
PASSENGER AIR BAG
OFF
'-I; light must come on and stay on,
whenever the ignit ion is switched on.
- If the
PASSENGER AIR BA G OFF '-I; light
does not come on and stay on, perform the
checks described ¢
page 289, Monitoring
the Advanced Airbag System.
- Take the child restra int off the front passen­
ge r seat and install it prope rly at one of the
rear seat positions if the
PASSENGER AIR
BAG OFF
'-I; light does not stay on whenever
the ignition is switched on .
- Always read and heed all WARNINGS when­
eve r using a child restrained in a vehicle is
be ing used
¢ page 268, Safety belts,
¢ page 2 77, Airbag system and
¢ page 302, Important information .
Securing child safety
seats
Securing a child safety seat using a safety
belt
Safety belts for the rear seats and the front pas ­
senger can be locked with the convertible locking
retractor to properly secure child safety seats .
The safety belts for the rear seats and for the
front passenge r's seat have a convertible locking
retractor for child safety seats. The safety belt
must be locked so that be lt webbing cannot un­
reel. The retractor can be activated to lock the
safety belt and prevent the safety belt webbing
from loosening up dur ing normal driving . A ch ild
safety seat can only be properly installed when
the safety be lt is locked so that the ch ild and
c h ild safety seat will stay in place.
Always remember : Even though your veh icle is
equipped with an Advanced Airbag system, all
children, especially those 12 years and younger,
shou ld a lways r ide in t he back seat p roperly re-
strained for their age and s ize.
.,.
31 3

Child safet y
A WARNING
-
Improperly installed child safety seats in­
crease the risk of ser ious personal injury and
death in a collision .
- Always make sure that the safety belt re­
tractor is locked when installing a child safety seat. An unlocked safety belt retrac­
tor cannot hold the child safety seat in place dur ing normal driving or in a crash.
- Always buckle the child safety seat firmly in
place even if a child is not s itting in it. A
loose child safety seat can fly around during
a sudden stop or in a coll is ion .
- Always make sure that the rear seat back­
rest to which the center rear safety belt* is
attached is securely latched whenever the
rear cente r safety belt is being used to se­
cu re a ch ild restraint.
- If the backrest is not securely latched, the
child and the child restraint will be thrown
forward together w ith the backrest and will
strike parts of the vehicle interior. The chi ld
can be se riously injured or killed .
- Never ins tall rear-facing chi ld safety seats
or infant carriers on the front passenger
seat . A child will be serious ly inju red and
can be killed when the passenger airbag in­
flates.
- The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the chi ld safety seat and child
against the backrest, center armrest, door
or roof .
- Always install rear-facing child safety seats
or infant carr iers on the rear seat.
- Forward-facing ch ild safety seats or infant
carr iers installed on the front passenger's
seat may interfere with the deployment of
the a irbag and cause serious injury to the
child .
- It is safer to install a forward -facing ch ild
safety seat on the rear seat .
- Always read and heed all WARNINGS when­
ever using a child restrained in a veh icle is
being used
~ page 302 . Specia l precaut ions
apply when installing a child safety seat on
the fron t passenger seat
~ page 2 78, Child
314
restraints on the front seat -some impor­
tant things to know.
A WARNING
A lways take special precautions if you must
install a forward or rearward-facing child re­
stra int on the front passenger's seat in excep ­
tional s ituations:
- Whenever a forward or rearward-fac ing
child restraint is installed on the front pas ­
senger seat, the
PASSENGER AIR BAG OFF
~; light must come on and stay on whenev­
er the ign ition is switched on.
- If the
PASSENGER AIR BAG OFF ~; light
does not come on and stay on , perform the
checks desc ribed
~ page 289, Monitoring
the Advanced Airbag System.
- Take the child restra int off the front passen­
ger seat and install it prope rly at one of the
rear seat positions if the
PA SSENGER AIR
BAG
OFF ~. light does not stay on whenever
the ignition is switched on .
- Improper installation of child restraints can
reduce their effectiveness or even prevent
them from providing any protect ion .
- An improperly installed child restraint can
interfere with the airbag as it deploys and
serious ly injure or even kill the child.
- Always carefully follow the manufacturer's
instructions provided with the child safety
seat or carrier.
- After checking to make sure that the child
restraint is properly installed, make certain
that the child restraint is correctly recog­ nized by the capacitive passenger detection
system in the front passenger seat and that
the
PASSENGE R AIR B AG OFF ~; light sig­
na ls the correct front passenger fronta l air­
bag stat us.
A WARNING
Forward-facing child restra ints:
- Always make sure the forward-facing seat
has been des igned and certified by its man­
ufacturer for use on a front seat with a pas­
senger front and side airbag.
-

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-Never put the forward-facing child restraint
up, against or very near the instrument pan­
el.
-Always move the front passenger seat to
the highest position in the up and down
ad­
justment range and move it back to the
rearmost position in the seat's fore and aft
adjustment range, as far away from the air­
bag as possib le, before insta lling the
for­
ward-facing child restra int.
- Always make sure that the safety belt upper
anchorage is beh ind the child restraint and
not next to or in front of the chi ld restraint
so that the safety belt will be properly pos i­
tioned.
-Make sure that the PASSENGER AIR BAG
OFF ~; light comes on and stays on a ll the
time whenever the ignition is switched on.
,&. WARNING t-==
Rearward-facing child restraints:
-A ch ild in a rearward-facing child safety seat
installed on the front passenger seat wi ll be
seriously injured and can be killed if the
front airbag inflates
-even with an Ad­
vanced Airbag System.
-The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the chi ld safety seat and child
against the backrest, center armrest, door
or roof .
-Always be especially careful if you must in­
stall a rearward facing child safety seat on
the front passenger seat in exceptional c ir­
cumstances .
-Make sure that the PASSENGER AIR BAG
OFF ~; light comes on and stays on a ll the
t ime whenever the ignition is switched on.
-If the PASSENGE R AIR BAG OFF ~; light
does not come on and stay on, immed iate ly
install the rea r-facing child safety seat in a
rea r seat ing pos ition and have the airbag
system inspected by your Aud i dealer.
Ch ild safety
Activating the convertible locking retractor
Use the convertible locking retractor to secure a
child restraint .
Always heed the child safety seat manufacturer's
instructions when installing a child restraint in
your vehicle. To activate the convertible locking retractor:
.. Place the child restraint on a seat, preferably
on the rear seat .
.. Slowly pull the belt all the w ay out .
.. Route it around or through the child restra int
be lt
path ¢&. -
.. Push the ch ild safety seat down with you r full
weight to get the safety belt really tight.
.. Insert the belt tongue into the buckle for that
seating position.
.. Guide the safety belt back into the retractor un­
til the belt lies flat and snug on the child safety
seat .
.. You should hear a ''cl icking" noise as the belt
w inds back into the inertia reel. Test the con ­
vert ible lock ing retractor by pulling on the belt .
You shou ld no longer be able to pull the belt
out of the retractor. The convertib le loc king re­
t ractor is now activated.
.. Make sure that the red release button is facing
away from the child restraint so that it can be
unbuckled quickly .
.. Pull on the belt to make sure the safety belt is
properly tight and fastened so that the seat
cannot move forward or sideways more than
one inch (2 .5 cm) .
,&. WARNING
Using the wrong ch ild rest raint or an improp­
e rly installed child restra int can cause se rious
personal injury or death in a crash.
-Always make sure that the safety be lt re­
tr actor is locked when installing a child
safety seat . An un locked safety be lt retrac­
tor cannot hold the chi ld safety seat in p lace
during normal driving or in a crash.
-Always buckle the child safety seat firm ly in
p lace even if a child is not sitting in it. A
loose child safety seat can fly around during
a sudden stop or in a crash.
.,.
315

Child safety
Installing the upper tether strap on the
anchorage
App lies to: Coupe
F ig. 266 Te ther s trap : proper ro utin g an d mo untin g
~
,r~~
Applies to: Sportback/Cabriolet
Fig. 267 Tet her st rap : proper rou ting and moun ting (ex ­
amp le)
In sta lling th e te th er strap
• Release or deploy the tether strap on the child
restraint according to the child restra int manu ­
facturer's instructions .
• Applies to: Cabrio let: Fold the backrest s light ly
forward
~ page 79 and locate the tethe r anchor
behind the rear seat backrest .
• Guide the upper tether strap under the rear
head restraint (raise the head restraint if neces­
sary) . For child restraints with V -tether straps ,
always make sure that the head restraint guide rods do no t interfere with any part of the top
tether strap .
• Applies to: Coupe: Tilt the recess flap up to ex­
pose the anchor bracket .
• Applies to: Coupe: Attach the tether strap an­
cho rage hook into the open ing of the tether an­
c h orage.
• Applies to: Sportback/Cabriolet: Guide the up­
per tether strap into the rear cargo area and
slide the tether strap hook over the anchor bracket.
320
• Applies to: Cabriolet: Make sure the seat belt is
not pinched or damaged when folding the bakr­
est.
• Applies to: Cabriolet: Fold the backrest up
again until it locks into place.
• Pull on the tether strap hook so that the spring
catc h of the hook engages.
• Tighten the tether strap firm ly following the
child restra int manufacturer's ins truc tions.
Releasing the tether strap
• Loosen the tension follow ing the child restra int
manufacturer's instructions .
• Depress the spring catch on the hook and re­
lease it from the anchorage.
(D Note
If you leave the child restraint with the tether
strap firmly installed for severa l days, this
could leave a mark on the upholstery on the
seat cushion and ba ckrest in the area where
the te ther s trap was installed . The upholstery
would a lso be permanently stretched around
the tether strap . Th is app lies especia lly to
l eather seats.
Using tether straps on rearward -facing
child restraints
Currently, few rear-facing child restraint systems
come wi th a tether. Please read and heed the
c hi ld rest raint system manufacture r's instr uc­
tions caref ully to determine how to properly in­
stall the tether.
A WARNING
A child in a rearward-facing child safety seat
installed on the front passenger seat will be
seriously injured and can be k illed if the front
a irbag inflates
-even with an Advanced Air­
bag System .
- The inflating airbag will h it the chi ld safety
seat or infant carrier with great force and
will smas h the child safety seat and child
aga inst the backrest, ce nter armrest, or
door.
- If you must install a rearward facing child
safety seat on the front passenger seat

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because of excep tional circ umstances and
the
PASSENGER AIR BAG OFF~ ; light does
not come on and stay on, immediately in­
sta ll th e rear-fac ing ch ild safety seat in a
r e a r se at ing pos ition and hav e the airbag
sys tem i nspecte d by your Au di dea ler .
Additional information
Sources of information about child
restraints and their use
There are a number of so urces of addit iona l in­
formation about child restraint selection, i nsta l­
l ation and use:
NHTSA advises that t he best child safety seat is
the one t hat fits your ch ild and fits in you r vehi ­
cle, and that you will use co rrectly and consis­
tently .
Try before you buy !
U.S National Highway Traffic Safety Administra­
tion
T el. : 1-888-327 -4236 (TTY: 1- 800-424-91 53)
http :/ /www. nhtsa.gov
h ttp :/ /www.safercar.gov
National SAFE KIDS Campaign
T el. : (2 02) 662-0600
http :/ /www.safek ids.o rg
Safety BeltSafe U.S.A
Tel.: (800) 745-SA FE (Eng lish)
T el. : (8 00) 747-SANO (Spa nish)
http :/ /www.carseat.org
Transport Canada Information Centre
Tel.: 1-8 00-333-037 1 or call 1 -613-998-8 616 if
you are in the Ottawa area
http ://www.tc.gc.ca/ eng/roadsafety/menu .htm
Audi Customer Relations
Tel.: (800) 822-2 834
Child safety
321

Check ing and F illing
Checking and Filling
Gasoline
Fuel supply
Applies to: vehicles with gaso line engine
Using the right fuel helps keep the environment
clean and prevents engine damage.
F u el r eco mmend ati on
The fuel recommended for your vehicle is unle ad­
e d pr em ium
grade gasoline . Audi recommends
using TOP TIER Detergent Gasoline with a mini­
mum octane rating of 91 AKI (95 RON). For more
information on TOP TIER Detergent Gasoline,
p lease go to the offic ial website
(www.toptiergas .com).
The recommended gasoline octane rating for
your engine can also be found on a label located
on the ins ide of the fuel filler flap . This rating
may be specified as AK I or RON .
Your veh icle may also be operated using unlead­
ed regular gasoline with a minimum octane rat ­
ing of 87 AKl/91 RON. However, using 87 AKI/91
RON octane fuel w il l slightly reduce engine pe r­
forma nce.
Us e un leade d gaso lin e onl y. Unleaded gasoline
is availab le throughout the USA , Canada, and in
most European countries . We recommend that
you do not ta ke your vehicle to areas or co unt ries
where un leaded gaso line may not be availab le.
For more information on refueling your vehicle,
see
¢ page 324 .
Octane ra ting
Octane rating indicates a gasoline's ability to re­
sist engine damaging "knock" caused by prema­
ture ignit ion and detonation . Therefore, buy ing
the correct grade of gasoline is very important to
he lp prevent poss ible engine damage and a loss
of eng ine performance.
Gasoline most commonly used in the Un ited
States and Canada has the following octane rat­
i n gs that ca n usually be found on the filler pump:
- Premium Grade: 91 - 96 AKI
322
- Regu la r Grade: 87 - 90 AK I
Explanation of the abbreviations:
AKI = Anti Knock Index = (R +M)/2 = (RON +MON)/
2
RON = Research Octane Number
MON = Motor Octane Number.
{[) Note
- Do not use a ny fue l w ith o ctane ratings low­
er than 87 AKI or 91 RON othe rw ise expen­
sive engine damage wi ll occur .
- Do
not use leaded gasoline. The use of lead­
ed gasoline will severely damage your vehi­
cle's catalyt ic converter and its ability to
control exhaust emissions .
Blended gasoline
Applies to: vehicles with gasoline engine
Use of gaso lin e conta ining alcoho l or MTBE
(meth yl tertia ry butyl ether )
You may use unleaded gasoline blended with al­
cohol or MTB E (commonly referred to as oxygen ­
ates) if the blended m ixture meets the follow ing
criteria:
Blend of g asoline methanol (wood alcohol o r
m eth yl alcoho l)
-Anti -knock index must be 87 AKI or h igher.
- Blend must contain no more than 3% metha-
nol.
- Blend must contain more than 2% co -solvents.
Blend of ga soline and ethanol (grain alcohol or
ethyl alc ohol )
- Anti-knock index must be 87 AKI or h igher .
- Blend must not conta in more than 15% etha-
nol.
Blend of gas oline and M TBE
- Anti-knock index must be 87 AK I or h igher .
- Blend must contain not mo re than 1S% MTB E.
S easonall y adjust ed gasoline
Many gasoline grades are blended to perform es­
pecially well for winter or summer dr iv ing . Dur-
i ng seasonal change-over, we suggest that you
.,..

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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

,&_ 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

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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

Checking and Filling
areas, into open streams or down sewage
drains.
- Recycle used engine oil by taking it to a used
engine oil collection facility in your area, or
contact a service station .
Cooling system
Coolant
The engine cooling system is filled with a mixture
of pur ified water and coolant addit ive at the fa c­
tory . T his coolant must not be not changed.
The coolant leve l is monitored through
the . in­
d icator
light ~ page 30. Howeve r, we do recom­
mend occasionally check ing the coo lant level
manually.
I f you must add coolant , use a m ixt ure of water
a nd coolant addit ive. M ixing the coolant additive
with d istilled water is recommended .
Coolant additive
The coolant addit ive is made of anti-freez ing and
corros ion protection agents . Only use the fo llow­
ing coolant add it ives . These additives may be
mixed w ith each other.
Coolant additive Specification
G13
TL 774)
G12++ TL
774 G
The amount of coo lant additive that needs to be
mixed with water depends on the climate where
the vehicle will be operated . If the coolant addi­
tive percentage is too low, the coolant can free ze
and damage the eng ine.
Coolant Freeze protec-
tion
additive
Warm m in .40% m in . - 13 °F
reg io ns (-25 °C)
max. 45%
Cold min
. 50% max. -40 °F
reg ions (-40 °C)
max . 55%
336
(D Note
- Before the start of winter, have an a uthor­
ized Aud i dea ler or a uthorized Audi Service
Facility check if the coo lant add itive in your
vehicle matches the pe rcentage appropr iate
for the climate. This is especially important
when drivi ng i n colder climates .
- If the appropriate coo lant additive is not
available in an emergency, do not add any
ot her additive. Yo u could damage the en­
gine. If this happens, only use wa ter and re­
s tore the correct m ix tur e ratio wi th the
specifie d coo lant ad ditive as soon as poss i­
ble.
- Onl y refill with new coolan t.
- Radiator sealant must not be mixed with
the coolant.
Adding coolant
Fig. 278 Engine compa rtment: release butto n on coo lant
expansion ta n k
Observe the safety precautions ~ A in Working
in the engine comportment on page 330.
Checking the engine coolant level
.,. Park the vehicle on a level surface .
.,. Switch the ignit io n off.
.,. Read the coolant level on the coolant expansion
tank
¢ fig. 278 .
.,. The coolant leve l must be between the MIN and
MAX markings when the engine in cold. When
the engine is warm it can be slightly above the MAX marking .
Adding coolant
.,. Let the engine cool down.