ESP AUDI R8 COUPE 2020 Workshop Manual
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Page 208 of 308

Airbag system
- If the airbag indicator light > page 17
comes when the vehicle is being used, have
the system inspected immediately by your
authorized Audi dealer. It is possible that
the airbag will inflate when it is not sup-
posed to, or will not inflate when it should.
How supplemental side airbags work
Side airbags deploy instantly and can help re-
duce the risk of upper torso injuries for occu-
pants who are properly restrained.
B4S-0122
Applies to: vehicles without Power top
Fig. 164 Inflated side airbag on left side of vehicle
B4S-0176
Applies to: vehicles with Power top
Fig. 165 Inflated side airbag on left side of vehicle
When the system is triggered, the airbag is filled
with propellant gas and breaks through a seam in
the seat surface area marked “AIRBAG”. It ex-
pands between the side trim panel and the pas-
senger. In order to help provide this additional
protection, the side airbag must inflate within a
fraction of a second at very high speed and with
great force. The supplemental side airbag could
injure you if your seating position is not proper or
upright or if items are located in the area where
the supplemental side airbag expands. This ap-
plies especially to children > page 211, Child
safety. Supplemental side airbags inflate be-
206
tween the occupant and the door panel on the
side of the vehicle that is struck in certain side
collision > fig. 164.
Although they are not a soft pillow, they can
“cushion” the impact and in this way they can
help to reduce the risk of injury to the upper part
of the body.
A fine dust may develop when the airbag deploys.
This is normal and does not mean there is a fire
in the vehicle.
Important safety instructions on the side
airbag system
Airbags are only supplemental restraints. Always
properly wear safety belts and ride in a proper
seating position.
There is a lot that you and your passengers must
know and act accordingly to help the safety belts
and airbags do their job to provide supplemental
protection.
Z\ WARNING
An inflating side airbag can cause serious or
fatal injury. Improperly wearing safety belts
and improper seating positions increase the
risk of serious personal injury and death
whenever a vehicle is being used.
—In order to reduce the risk of injury when the
supplemental side airbag inflates:
— Always sit in an upright position and never
lean against the area where the supple-
mental side airbag is located.
— Never let a child or anyone else rest their
head against the side trim panel in the
area where the supplemental side airbag
inflates.
— Always make sure that safety belts are
worn correctly,
— Do not let anyone sitting in the front seat
put their hand or any other parts of their
body out of the window.
— Always make sure that the side airbag can
inflate
without interference.
— Never install seat covers or replacement
upholstery over the front seatbacks that
Page 211 of 308

4S1012721BA
Airbag system
How side curtain airbags work
Applies to: vehicles with side curtain airbags
Side curtain airbags can work together with side
airbags to help reduce the risk of head and upper
torso injuries for occupants who are properly re-
strained.
B4S-0115
Fig. 167 Illustration of principle: Inflated side curtain air-
bags on the left side
The side curtain airbags inflate between the oc-
cupant and the windows on the side of the vehi-
cle that is struck in a side collision > fig. 167.
When the system is triggered, the side curtain
airbag is filled with propellant gas and breaks
through a seam above the front and rear side
windows identified by the AIRBAG label. In order
to help provide this additional protection, the
side curtain airbag must inflate within the blink
of an eye at very high speed and with great force.
The side curtain airbag could injure you if your
seating position is not proper or upright or if
items are located in the area where the supple-
mental side curtain airbag inflates. This applies
especially to children > page 211.
Although they are not a soft pillow, side curtain
airbags can “cushion” the impact and in this way
they can help to reduce the risk of injury to the
head and the upper part of the body.
A fine dust may develop when the airbag deploys.
This is quite normal and does not mean there is a
fire in the vehicle.
Important safety instructions on the side
ty le S)i)
Applies to: vehicles with side curtain airbags
Airbags are only supplemental restraints. Always
properly wear safety belts and ride in a proper
seating position.
There is a lot that you and your passenger must
know and do to help the safety belts and airbags
do their job to provide supplemental protection.
ZA WARNING
Improperly wearing safety belts and improper
seating positions increase the risk of serious
personal injury and death whenever a vehicle
is being used.
— Never let occupants place any parts of their
bodies in the area from which the side cur-
tain airbag inflate.
— Always make sure that the side curtain air-
bags can inflate without interference.
— Use the built-in coat hooks only for light-
weight clothing. Never leave any heavy or
sharp-edged objects in the pockets that may
interfere with airbag deployment and can
cause personal injury in a collision.
— Never use hangers to hang clothes on the
hooks.
— Only use factory-installed sun shades or, if
shades installed after the vehicle leaves the
factory, use only genuine Audi sun shades.
—A deploying airbag inflates in a fraction of a
second and with great force.
— Never attach objects to the cover or in the
deployment zone of a side curtain airbag.
— The airbag deployment zones must be kept
clear at all times. Make sure there are no ob-
jects, pets, or other persons in the space be-
tween any vehicle occupant and any airbag
at any time.
— Do not attach any accessories to the doors.
ZA WARNING
—The airbag system can deploy only once. If
the airbag has been triggered, the system
must be replaced by an authorized Audi
dealer or qualified workshop.
209
Page 213 of 308

4S1012721BA
Child safety
Child safety
Important information
Introduction
The physical principles of what happens when
your vehicle is in a crash apply also to children
= page 181, What happens to occupants not
wearing safety belts?. But unlike adults and
teenagers, their muscles and bones are not fully
developed. In many respects children are at
greater risk of serious injury in crashes than
adults.
Because children's bodies are not fully developed,
they require restraint systems especially de-
signed for their size, weight, and body structure.
Many countries and all states of the United
States and provinces of Canada have laws requir-
ing the use of approved child restraint systems
for infants and small children.
Ina frontal crash at a speed of 20-35 mph
(30-56 km/h) the forces acting on a 13 Lbs (6 kg)
infant will be more than 20 times the weight of
the child. This means the weight of the child
would suddenly be more than 260 lbs (120 kg).
Under these conditions, only an appropriate child
restraint properly used can reduce the risk of seri-
ous injury. Child restraints, like adult safety belts,
must be used properly to be effective. Used im-
properly, they can increase the risk of serious in-
jury in an accident.
If you must install a child restraint on the front
passenger seat in exceptional circumstances, be
sure to read and heed the important information
and warnings > page 188. Infants and other chil-
dren who are properly restrained in an appropri-
ate child restraint that is for their size and age
can benefit from the protection that supplemen-
tal side airbags provide in some kinds of crashes.
For more information please see information pro-
vided by the:
— National Highway Traffic Safety Administration
(NHTSA), currently at : http://www.safercar.gov
(for the USA)
— Transport Canada Information Centre, currently
at: http://www.tc.gc.ca (for Canada)
Consult the child safety seat manufacturer's in-
structions in order to be sure the seat is right for
your child's size > page 214, Important safety
instructions for using child safety seats. Please
be sure to read and heed all of the important in-
formation and WARNINGS about child safety, Ad-
vanced Airbags, and the installation of child re-
straints in this chapter.
There is a lot you need to know about the Ad-
vanced Airbags in your vehicle and how they work
when infants and children in child restraints are
on the front passenger seat. Because of the large
amount of important information, we cannot re-
peat it all here. We urge you to read the detailed
information in this owner's manual about airbags
and the Advanced Airbag System in your vehicle
and the very important information about trans-
porting children on the front passenger seat.
Please be sure to heed the WARNINGS - they are
extremely important for your safety and the safe-
ty of your passengers, especially infants and
small children.
ZA\ WARNING
All vehicle occupants and especially children
must be restrained properly whenever riding
in a vehicle. An unrestrained or improperly re-
strained child could be injured by striking the
interior or by being ejected from the vehicle
during a sudden maneuver or impact. An un-
restrained or improperly restrained child is al-
so at greater risk of injury or death through
contact with an inflating airbag.
Z\ WARNING
Children on the front seat of any car even with
Advanced Airbags can be seriously injured or
even killed when an airbag inflates. A child in
a rearward-facing child safety seat installed
on the front passenger seat will be seriously
injured and can be killed if the front airbag in-
flates.
— The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, center armrest, or
door.
211
Page 216 of 308

Child safety
For this reason, the United States National High-
way Traffic Safety Administration has published a
list of specific type, makes and models of child
restraints that must be used to certify compli-
ance of the Advanced Airbag System in your vehi-
cle with the suppression requirements of Federal
Motor Vehicle Safety Standard 208. These child
restraints are:
Subpart A - Car bed child restraints
Model Manufactured on or
after
Evenflo Medallion 254 |December 1, 1999
Evenflo Generations
352xxxx
September 25, 2007
Graco ComfortSport September 25, 2007
Model Manufactured on or
after
Angel Guard Angel September 25, 2007
Ride AA2403FOF
Subpart B - Rear-facing child restraints
Model Manufactured on or
after
Century SmartFit 4543 | December 1, 1999
Cosco Arriva
22-013PAW and base
22-999WHO
September 25, 2007
Evenflo Discovery Ad- |December 1, 1999
just Right 212
Graco Toddler Safety
Seat Step 2
Graco Platinum Cargo
September 25, 2007
September 25, 2007
Z\ WARNING
To reduce the risk of serious injury, make sure
that the PASSENGER AIR BAG OFF #; light
comes on and stays on whenever a child re-
straint is installed on the front passenger seat
and the ignition is switched on.
— Never install a reward facing child safety
seat on the front passenger seat if the PAS-
SENGER AIR BAG OFF 3%; light does not
turn on and stay on.
— Have the airbag system inspected by your
authorized Audi dealer immediately.
Evenflo First Choice
204
December 1, 1999
Graco Infant 8457 December 1, 1999
Graco Snugride September 25, 2007
Peg Perego Primo Viag- | September 25, 2007
gio SIP IMUNOOUS
Subpart C - Forward-facing and convertible
child restraints
Model Manufactured on or
after
Britax Roundabout
E9QLO2xx
September 25, 2007
Cosco Touriva 02519 December 1, 1999
Cosco Summit Deluxe
High Back Booster
September 25, 2007
22-262
Cosco High Back Boos- | September 25, 2007
ter 22-209
Evenflo Tribute V September 25, 2007
37 9XXxx
214
@) Tips
The child seats listed in categories A to C have
been statically tested by Audi only for the Ad-
vanced Airbag function.
acetamide mCi iis)
nema aT)
Correct use of child safety seats substantially re-
duces the risk of injury in an accident!
As the driver, you are responsible for the safety of
everybody in the vehicle, especially children:
> Always use the right child safety seat for each
child and always use it properly > page 216.
> Always carefully follow the child safety seat
manufacturer's instructions on how to route
the safety belt properly through the child safe-
ty seat.
> When using the vehicle safety belt to install a
child safety seat, you must first activate the
convertible locking retractor on the safety belt
to prevent the child safety seat from moving
=> page 220.
Page 217 of 308

4S1012721BA
Child safety
> Push the child safety seat down with your full
weight to get the safety belt really tight so that
the seat cannot move forward and sideways
more than 1 in (2.5 cm).
Always remember: Even though your vehicle is
equipped with an Advanced Airbag system, a
child should always ride in the seat properly re-
strained for its age and size.
Z\ WARNING
Not using a child safety seat, using the wrong
child safety seat or improperly installing a
child restraint increases the risk of serious
personal injury and death.
— All vehicle occupants and especially children
must be restrained properly whenever riding
in a vehicle. An unrestrained or improperly
restrained child could be injured by striking
the interior or by being ejected from the ve-
hicle during a sudden maneuver or impact.
An unrestrained or improperly restrained
child is also at greater risk of injury or death
through contact with an inflating airbag.
— Commercially available child safety seats are
required to comply with U.S. Federal Motor
Vehicle Safety Standard (FMVSS) 213 (in
Canada CMVSS 213).
— When buying a child restraint, select one
that fits your child and the vehicle.
— Only use child restraint systems that fully
contact the flat portion of the seat cush-
ion. The child restraint must not tip or
lean to either side. Audi does not recom-
mend using child safety seats that rest on
legs or tube-like frames. They do not pro-
vide adequate contact with the seat.
— Always heed all legal requirements per-
taining to the installation and use of child
safety seats and carefully follow the in-
structions provided by the manufacturer
of the seat you are using.
— Never let more than one child occupy a child
safety seat.
— Never let babies or older children ride in a
vehicle while sitting on the lap of another
passenger.
— Holding a child in your arms is never a sub-
stitute for a child restraint system.
— The strongest person could not hold the
child with the forces that exist in an acci-
dent. The child will strike the interior of
the vehicle and can also be struck by the
passenger.
— The child and the passenger can also injure
each other in an accident.
Never install rear-facing child safety seats or
infant carriers on the front passenger seat.
A child will be seriously injured and can be
killed when the passenger airbag inflates -
even with an Advanced Airbag System.
The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, center armrest, door
or roof.
If exceptional circumstances require the use
of a forward-facing child restraint on the
front passenger's seat, the child's safety and
well-being require that the following special
precautions be taken:
— Make sure the forward-facing seat has
been designed and certified by its manu-
facturer for use on a front seat with a pas-
senger front and side airbag.
— Always carefully follow the manufacturer's
instructions provided with the child safety
seat or carrier.
— Always move the front passenger seat into
the rearmost position of the passenger
seat's fore and aft adjustment range, and
as far away from the airbag as possible be-
fore installing the child restraint.
— Always make sure that nothing prevents
the front passenger's seat from being
moved to the rearmost position in its fore
and aft adjustment range.
— Always make sure that the backrest is in
the upright position.
— Never place or use any electrical device
(such as a laptop, CD player, electronic
games device, power inverter or seat heat-
er for child seats) on the front passenger
seat if the device is connected to the 12-
volt socket or the cigarette lighter socket.
215
Page 221 of 308

4S1012721BA
Child safety
The vehicle's safety belts alone will not fit most
children until they are at least 4 ft 9 in (57 in/
1.45 m) tall and weigh about 80 lbs (36 kg).
Booster seats raise these children up so that the
safety belt will pass properly over the stronger
parts of their bodies and the safety belt can help
protect them ina crash.
> Do not use the convertible locking retractor
when using the vehicle's safety belt to restrain
a child on a booster seat.
> The shoulder belt must lie as close to the cen-
ter of the child's collar bone as possible and
must lie flat 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 tight-
en if necessary.
Children up to at least 8 years old (over 40 lbs or
18 kg) are best protected in child safety seats de-
signed for their age and weight. Experts say that
the skeletal structure, particularly the pelvis, of
these children is not fully developed, and they
must not use the vehicle safety belts without a
suitable child restraint.
It is usually best to put these children in appro-
priate booster seats. Be sure the booster seat
meets all applicable safety standards.
Booster seats raise the seating position of the
child and reposition both the lap and shoulder
parts of the safety belt so that they pass across
the child's body in the right places. The routing of
the belt over the child's body is very important
for the child's protection, whether or not a boos-
ter seat is used.
Never use the lap belt portion of the vehicle's
safety belt alone to restrain any child, regardless
of how big the child is. Always remember that
children do not have the pronounced pelvic struc-
ture required for the proper function of lap belt
portion of the vehicle's three point lap and
shoulder belts. The child's safety absolutely re-
quires that a lap belt portion of the safety belt be
fastened snugly and as low as possible around
the pelvis. Never let the lap belt portion of the
safety belt pass over the child's stomach or abdo-
men.
In acrash, airbags must inflate within a blink of
an eye and with considerable force. In order to do
its job, the airbag needs room to inflate so that it
will be there to protect the occupant as the occu-
pant moves forward into the airbag.
A vehicle occupant who is out of position and too
close to the airbag gets in the way of an inflating
airbag. When an occupant is too close, he or she
will be struck violently and will receive serious or
possibly even fatal injury.
In order for the airbag to offer protection, it is
important that all vehicle occupants, especially
any children, who must be in the front seat be-
cause of exceptional circumstances, be properly
restrained and as far away from the airbag as
possible. By keeping room between the child's
body and the front of the passenger compart-
ment, the airbag can inflate completely and pro-
vide supplemental protection in certain frontal
collisions.
Z\ 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 death in a collision or other emer-
gency situation. To help reduce the risk of se-
rious personal injury and/or death:
— The shoulder belt must lie as close to the
center of the child’s collar bone as possible
and must lie flat 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 that 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
accident or other emergency situation
=> page 180.
— The rear side of the child safety seat should
be positioned as close as possible to the
backrest on the vehicle seat.
219
Page 223 of 308

4S1012721BA
Child safety
ZA\ WARNING
Always take special precautions if you must
install a forward or rearward-facing child re-
straint on the front passenger's seat in excep-
tional situations:
— Whenever a forward or rearward-facing
child restraint is installed on the front pas-
senger seat, the PASSENGER AIR BAG OFF
#; light must come on and stay on whenever
the ignition is switched on.
— If the PASSENGER AIR BAG OFF %; light
does not come on and stay on, perform the
checks described > page 198, Monitoring
the Advanced Airbag System.
— If the PASSENGER AIR BAG OFF %; light
does not come on and stay on whenever the
ignition is switched on the inflating airbag
will hit the child safety seat or infant carrier
with great force and will smash the child
safety seat and child against the backrest,
center armrest, door or roof. Have the air-
bag system inspected immediately by your
Audi dealer.
— Improper installation of child restraints can
reduce their effectiveness or even prevent
them from providing any protection.
— An improperly installed child restraint can
interfere with the airbag as it deploys and
seriously
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 PASSENGER AIR BAG OFF %; light sig-
nals the correct front passenger frontal air-
bag status.
ZA\ WARNING
Forward-facing child restraints:
— Always make sure the forward-facing seat
has been designed and certified by its manu-
facturer for use on a front seat with a pas-
senger front and side airbag.
— Never put the forward-facing child restraint
up, against or very near the instrument pan-
el
— Always move the passenger seat into its
rearmost position in the seat's fore and aft
adjustment range, as far away from the air-
bag as possible before installing the for-
ward-facing child restraint. The backrest
must be adjusted to an upright position.
— Make sure that the PASSENGER AIR BAG
OFF 3%; light comes on and stays on all the
time whenever the ignition is switched on.
ZA WARNING
Rearward-facing child restraints:
—A child in a rearward-facing child safety seat
installed on the front passenger seat will 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 child 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 cir-
cumstances.
— Make sure that the PASSENGER AIR BAG
OFF %; light comes on and stays on all the
time whenever the ignition is switched on.
— If the PASSENGER AIR BAG OFF #; light
does not come on and stay on, have the air-
bag system inspected by your Audi dealer.
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.
> Slowly pull the belt all the way out.
221
Page 226 of 308

Child safety
Installing the tether strap on the
anchorage
Applies to: vehicles with Tether anchors and tether straps
Installing the tether strap
> Release or deploy the tether strap on the child
restraint according to the child restraint manu-
facturer's instructions.
> Guide the upper tether strap sideways (Version
A) > page 223, fig. 171 or under (Version B)
=> page 223, fig. 172 the head restraint.
> Remove the cover to expose the anchor bracket.
> Attach the tether strap anchorage hook into the
opening of the tether anchorage.
> Pull on the tether strap hook so that the spring
catch of the hook is engaged.
> Tighten the tether strap firmly following the
child restraint manufacturer's instructions.
Releasing the tether strap
> Loosen the tension following the child restraint
manufacturer’s instructions.
> Depress the spring catch on the hook and re-
lease it from the anchorage.
©) Note
If you leave the child restraint with the tether
strap firmly installed for several days, this
could leave a mark on the upholstery on the
seat cushion and backrest in the area where
the tether strap was installed. The upholstery
would also be permanently stretched around
the tether strap. This applies especially to
leather seats.
Using tether straps on rearward-facing
Riera)
Applies to: vehicles with Tether anchors and tether straps
Currently, few rear-facing child restraint systems
come with a tether. Please read and heed the
child restraint system manufacturer's instruc-
tions carefully to determine how to properly in-
stall the tether.
Z\ WARNING
A child in a rearward-facing child safety seat
installed on the front passenger seat will be
224
seriously injured and can be killed if the front
airbag inflates - even with an Advanced Airbag
System.
— The inflating airbag will hit the child safety
seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, center armrest or
door.
— Never install a rearward facing child safety
seat on the front passenger seat unless the
PASSENGER AIR BAG OFF 3; light comes
on and stays on. If the PASSENGER AIR
BAG OFF ¥; light does not come on and stay
on the inflating airbag will hit the child safe-
ty seat or infant carrier with great force and
will smash the child safety seat and child
against the backrest, door or roof. Have the
airbag system inspected immediately by
your authorized Audi dealer.
Additional information
Sources of information about child
restraints and their use
There are a number of sources of additional infor-
mation about child restraint selection, installa-
tion and use:
NHTSA advises that the best child safety seat is
the one that fits your child and fits in your vehi-
cle, and that you will use correctly and consis-
tently.
Try before you buy!
U.S.
National Highway Traffic Safety Adminis-
tration
Tel.: 1-888-327-4236 (TTY: 1-800-424-9153)
www.nhtsa.gov
National SAFE KIDS Campaign
Tel.: (202) 662-0600
www.safekids.org
Safety BeltSafe U.S.A.
Tel.: (800) 745-SAFE (English)
Tel.: (800) 747-SANO (Spanish)
www.carseat.org
Page 229 of 308

4S1012721BA
Checking and Filling
— Do not use any gasoline mixture whose
composition cannot be identified.
— Audi does not assume any responsibility for
damage to the fuel system or for perform-
ance problems caused by using gasoline
mixtures different from those specified.
This type of damage also does not fall under
the New Vehicle Limited Warranty or under
the emissions control system warranty.
— If you notice a higher fuel consumption or
poor handling or performance problems due
to such gasoline mixtures, we recommend
fueling with unblended gasoline.
Gasoline additives
An important issue for many automobile manu-
facturers is combustion residue in the engine
that results from the use of certain fuels.
Although types of gasoline differ depending on
the manufacturer, there are similarities. Certain
substances in the gasoline may cause deposits in
the engine. Additives in the gasoline that should
keep the engine and fuel system clean do not all
function equally.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
If you use incorrect fuels over a long period of
time, the maximum engine performance may be
impaired by combustion residue.
@) Note
— Damage or malfunctions caused by the use
of incorrect types of gasoline are not cov-
ered by the New Vehicle Limited Warranty.
— Only gasoline additives that have been ap-
proved by Audi may be used.
Refueling
Fueling procedure
Your vehicle is equipped with a capless fuel filler
system.
B4S-0209
Fig. 173 Right rear side of the vehicle: opening the fuel
filler door
@
B4S-0210
Fig. 174 Right rear side of the vehicle: fuel pump nozzle
inserted
The fuel filler door is unlocked or locked by the
central locking system.
> Press on the left side of the fuel filler door to
open it > fig. 173.
> Insert the fuel pump nozzle all the way into the
fuel tank filler neck > fig. 174. Make sure it is
seated correctly.
> Begin fueling. Once the fuel pump nozzle turns
off the first time, the fuel tank is full. Do not
continue fueling, or else the expansion space in
the tank will be filled with fuel.
> After the fuel pump has switched off, wait five
seconds before removing the nozzle to allow
the rest of the fuel to finish dripping into the
fuel tank.
> Close the fuel filler door and then press on the
left side until it latches.
227
>
Page 239 of 308

4S1012721BA
Checking and Filling
Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)
@) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
@ Tips
In certain weather conditions, water can
evaporate on the radiator and exit the side
vents as steam after stopping the engine.
Adding coolant
Applies to: vehicles without power top
st SN
S QD < a
Fig. 183 Engine compartment: markings on the coolant
expansion tank
Observe the safety precautions > page 229, Gen-
eral information.
Checking the engine coolant level
>» Park the vehicle on a level surface.
>» Switch the ignition off.
> Allow the engine to cool.
> Place a large, thick cloth over the coolant ex-
pansion tank cap and unscrew the cap counter-
clockwise > A\.
> Read the coolant level using the coolant level
float. The coolant level float may only stick out
over the edge of the coolant expansion tank a
maximum of 0.39 in (1 cm) when the engine is
cool.
Adding coolant
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Add coolant in the correct mixture ratio
=> page 236 until the dipstick is no more than
0.39 in (1 cm) above the edge of the coolant
expansion tank.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Close the cap securely.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.
ZA\ WARNING
— The engine compartment in any vehicle can
be a dangerous area. Stop the engine and al-
low it to cool before working in the engine
compartment. Always follow the informa-
tion found in > page 229, General informa-
tion.
— Never open the engine compartment lid if
you can see or hear steam or coolant escap-
ing from the engine compartment. This in-
creases the risk of burns. The cooling system
is under pressure. When you no longer see
or hear steam or coolant escaping, you may
open the engine compartment with caution. |>
237