2018 AUDI A5 COUPE ESP

Child safety
Booster seats and safety belts
Properly used booster seats can help protect
children weighing between about 40 lbs . and
80 lbs. (18 kg and 36 kg) who are less than 4
ft.
9 in . (57 inches/1.45 meters) tall.
Fig. 260 Rear seat: ch ild proper ly restrained in a booster
seat
The vehicle's safety belts alone will not fit most
children until they are at least 4
ft . 9 in. (57 in­
ches/1.45 meters) tall and weigh about 80 lbs .
(36 kg). Booster seats raise these child ren up so
that the safety belt will pass properly
over the
stronger parts of their bodies and the safety belt
can help protect them in a crash.
• Do not use the convertible locking retractor
when using the vehicle's safety belt to restrain
a chi ld on a booster seat.
• The shoulder be lt 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 pelv is and never
across the stomach or abdomen . Make sure the
belt lies flat and snug. Pull on the belt to tight­
en if necessary .
• If you must transport an older child in a boos­
te r seat on the front passenger seat, you can
use the safety belt height adj ustment to help
adjust the shoulder portion properly .
• Secure unused safety belts on the rear seat
qpage308.
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
312
must not use the vehicle safety belts without a
suitable child restraint.
It is usually best to put these children in appro­
pr iat e 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 be lt
over the chi ld's body is very important
for t he child's protection, whether or not a boos­
ter seat is used. Children age 12 and under must
always ride in the rear seat.
Children who are at least 4 ft. 9 in. (57 inches/
1.45 meters) ta ll can generally use the vehicle's
three point lap and shoulder belts. Never use the
lap belt portion of the vehicle's safety belt alone
to restrain any child, regard less of how big the
c hil d is. Always remember that children do not
have the p ronounced pelvic structure required for
the proper function of lap be lt portion of the
ve­
hicle's three point lap and shoulder belts. The
c hild' s safety abso lutely requ ires that a lap belt
portion of the safety belt be fastened snugly and
as low as possible around the pe lvis. Never let
the lap belt portion of the safety belt pass over
the chi ld 's stomach or abdomen.
In a crash, airbags must inflate within a blink of
an eye and with considerab le force . In order to do
i ts 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 a irbag 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 a irbag to
offer protection, it is
important that all vehicle occupants, especially
any ch ildren, who must be in the front seat be­
cause of exceptional c ircumstances, be properly
r estra ined and as far away from the a irbag as
possible. By keeping room between the child's
.,..

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3 a,
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

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3 a,
-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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fill up at busy gas stations where the seasonal
adjustment is more likely to be made in time .
(D Note
-Methanol f uels which do not mee t these re­
quirements may ca use corrosion and dam­
age to plastic and rubber components in the
fuel system.
-Do not use fuels that fai l to meet the speci­
fied criteria in this chapter.
- If you are unable to determine whether or not a particular fuel blend meets the speci­
fications, ask your service station or its fuel
supplier.
-Do not use fuel for which the contents can­
not be identif ied.
-Fuel system damage and performance prob­
l ems resulting from the use of fue ls differ­
ent from those specified are not the respon­
s ibility of Audi and are not covered under
the New Veh icle or the Emiss ion Control
System Wa rrant ies.
-If you experience a loss of fue l economy or
driveability and performance problems due
to the use of one of these fuel b lends, we
recommend that you switch to unblended
fuel.
Gasoline additives
Applies to: vehicles with gasol ine engine
A majo r concern among many auto manufactur ­
ers is carbon deposit build-up caused by the type
of gasoline you use.
A lthough gasoline grades d iffer from one manu­
facturer to another, they have cer tain things in
common . A ll gasoline grades contain substances
that can cause deposits to collect on vita l engine
parts, such as fue l injectors and intake valves . Al ­
though most gasoline brands include additives to keep engine and fuel systems clean, they are not
equally effective.
Audi recommends using TOP TIER Detergent Gas­
oline. For more informat ion on TOP TIER Deter­
gent Gasoline, please go to the official website (www.toptiergas .com) .
Check ing and Filling
After an extended period o f using inadeq uate
fuels, bui lt-up ca rbon deposits can rob your en­
gine of peak performance.
(D Note
- Damage or malfunction d ue to poor f uel
quality is no t covered by the Audi New Veh i­
cle Lim ited Warranty .
- Do not add af termarket fuel addi tive prod­
u cts to your fue l tank.
Diesel fuel
Applies to: vehicles with diesel engine
Always use U LSD (Ult ra Low Sulfur Diesel) No. 2.
T he ULSD No. 2 meets the AS TM 0975.
D iesel fuel w ith concentrations of b iod iesel h igh­
er than 5
% such as Bl 1, B20 or B100 are st rict ly
prohib ited.
Service station fuel pumps are labeled with the
cor rect fuel i nformation for easy recogn ition by
the user. If the d iesel fue l pump is not labeled
as k t he station operator wha t fuel is being dis­
pensed before fill ing up your vehi cle.
U LSD No . 2 may not be ava ilable outside the USA
and Canada. Be su re to check befo re t raveling to
othe r countr ies.
ULSD No . 2 can become thicker in very cold tem­
peratures, and th is can impa ir the engine's start­
ing and runn ing . Depend ing o n the season, gas
stations provide ULS D No. 2 that flows be tte r in
cold te mpe ra tures so that you can conti nue ope r­
at ing your vehicle as usual.
(D Note
- Yo ur vehicle's diese l eng ine w as designed
so ley for use w ith ULS D No. 2. Therefo re,
never use gasoline, heating oil, other fuels
or flow improvers. These contain s ubstances
that will severely damage the fuel system
and the engine. Such damage will not be
covered by your New Vehicle Limited War­
ranty.
- If you put any amount of incorrect fuel in
the fuel tank, do not start the engine under
..,_
323

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
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.

Charging the vehicle battery
Fig. 280 Engine compartment : connectors for a charger
and jump start cables
Requirement: only use chargers with a maximum
charging voltage of 30 amps/14.8 Volts.
The
vehicle battery cables remain connected .
.,. Read the warnings¢ & in General warnings
about batteries on page 338
and ¢ ,& .
.,. Switch off the ignition and all electrical equip­
ment .
.,. Open the hood ¢ page 331 .
.,. Open the red cover on the positive terminal
¢ fig. 280 .
.,. Clamp the charger terminal clamps to the jump
start pins
according to the instructions . (pin
under the red cover= "positive", pin with hex­
agonal head= "negative").
.,. Insert the power cable for the charging device
into the socket and switch the device on.
.,. At the end of the charging process, switch the
charger off and pull the power cable out of the
socket .
.,. Remove the charger terminal clamps.
.,. Close the red cover on the positive terminal.
.,. Close the hood ¢ page 331 .
A WARNING
-A highly explosive mixture of gases can form
when charging batteries. Only charge the
vehicle battery in well-vent ilated areas.
-A drained vehicle battery can freeze at tem­
peratures around 32
QF (0 QC). A frozen or
thawed vehicle battery must not be charged
and must not be used anymore. The battery
housing can crack and battery acid can leak
out if ice forms, which increases the risk of
an explosion and chemical burns. Contact an
Checking and Filling
authorized Audi dealer or authorized Audi
Service Facility for more information.
- Do not connect or disconnect the charging
cable while charging because this increases
the risk of an explosion.
@ Tips
- Only charge the vehicle battery through the
connections in the engine compartment.
- Read all of the manufacturer's instructions
for the charger before charging the vehicle
battery.
Windshield washer system
Fig. 281 E ngine compartmen t: was her fluid reservoi r cap
The windshield washer fluid reservoir O contains
the cleaning solution for the windshield and the
headlight washer
system*¢ page 332, fig. 276 .
The reservoir capacity can be found in
¢ page 388.
To reduce the risk of lime scale deposits on the
spray nozzles, use clean water with low amounts
of calcium. Always add window cleaner to the wa­
ter . When the outside temperatures are cold, an
anti -freezing agent should be added to the water
so that it does not freeze.
(D Note
-The concentration of ant i-freezing agent
must be adjusted to the vehicle operating
conditions in the respective climate . A con­
centration that is too high can lead to vehi-
cle damage.
- Never add radiator anti-freeze or other addi-
tives to the washer fluid.
.,..
339