2018 AUDI A5 COUPE Owners Manual

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.

.. Place a cloth over the coolant expansion tank
cap .
.. Push the release button ¢ fig. 2 78 and careful­
ly unscrew the cap to the left until you feel re­
sistance¢ &_ .
.. Push the release button again and remove the
cap completely .
.. Make sure that the fluid level remains stable .
Add more coolant if necessary .
.,. Turn the cap to the right to secure it until yo u
feel resistance a second time.
Coolant loss usually indicates there is a leak . Im­
mediately drive your vehicle to an authorized
Audi dealer or authorized Aud i Serv ice Facility
and have the cooling system inspected. If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cooling system.
A WARNING
- The cooling system is under pressure. Do
not open the coolant expansion tank cap
when the engine is hot. This increases the
risk of burns .
-The coolant additive and the coolant can be
dangerous to your health . For this reason,
keep the coolant in the original container
and away from children. There is a risk of
poisoning.
-When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
CD Note
Do not add coolant if the expansion tank is
empty. There may be air i n the cooling sys­
tem, which increases the risk of engine dam­
age . If this is the case, do not continue driv­
ing . See an authorized Audi dea ler or author­
ized Aud i Service Facility for assistance.
Checking and Filling
Brake fluid
Fig. 279 E ng in e compartment : cap on brake fluid reservo ir
Observe the safety precautions ¢&. in Working
in the engine compartment on page 330 .
Checking the brake fluid level
... Read the brake fluid level on the brake fluid
reservoir¢ page 332, fig . 276 . The brake fluid
level must be between the MIN and MAX mark­
ings¢_.&. .
The brake fluid level is monitored automatically.
Changing the brake fluid
Have the brake fluid changed regularly by an au­
thorized Audi dealer or authorized Audi Service Facility.
A WARNING
- If the brake flu id level is below the MIN
marking, it can impair the brak ing effect
and driving safety, wh ich increase the risk of
an accident. Do not continue dr iving . See an
authorized Audi dealer or authorized Audi
Serv ice Facility for assistance.
-If the brake fluid is old, bubbles may form
in the brake system dur ing heavy braking.
This would impair braking performance and
driving safety, which increases the risk of an
accident.
-To ensure the brake system functions cor­
rectly, only use brake fluids that comp ly
with VW standard 501 14 or FMVSS-116 DOT 4.
CD Note
-If the brake flu id l eve l is above the MAX
marking, brake fluid may leak out over the
337

Check ing and F illing
edge of the reservoir and result in damage
to the vehicle .
- Do not get any bra ke fluid on the ve hicle
paint, beca use it will cor rode t he pa int .
Battery
General warnings about batteries
Because of the complex power s upply, a ll wor k
on batte ries such as disconnecting, rep laci ng,
etc. s hou ld
onl y be per formed by an auth or ized
Aud i dea ler o r autho rized Aud i Serv ice Facility
c;> .&. .
The te rm "vehicle battery " refers to the 12 Vo lt
b at tery i n your veh icle.
Detailed warnings for the vehicle battery:
®
Wear eye protection .
A
Battery acid is highly corrosive. Wear p ro-
tective gloves and eye p rotection.
@
F ire, sp arks , open flame and smo king a re
forbidden.
A
A highly explosive mixtu re of gases can
form when charging ba tte ries.
®
Keep c hildren away from battery acid and
batteries.
A WARNING
All work on the batte ry o r electrical system in
your vehicle can result in injuries, chemical
burns, accide nts o r burns. Because of this, a ll
wor k mu st be perf ormed
only by an au thor­
ize d Aud i de aler o r authorized Aud i Se rv ice
Facility .
A WARNING
California Proposit io n 65 Warning:
- B attery posts, termin als and re late d a cces­
so ries contai n lead and lead compounds,
chem ica ls known to the State of California
to cause cance r and rep roduct ive p roblems.
Wash hands after handling.
338
(D Note
P rotect the vehicle battery aga inst freezing if
the ve hicle wi ll be par ked for long periods of
time so t hat it is not destroyed by "freezing"
c;> page339.
@ For the sake of the environment
'8 Batteries conta in polluting s ubstances such
as sulfur ic acid and lead. Contact an aut ho r­
i zed Audi dealer or authorized A udi Service
Fac ility for more informat io n.
· Vehicle battery
The term "vehicle battery" refers to the 12 Volt
battery in your vehicle.
Not running the v ehicl e for long period s of
time
If you do not d rive your vehicle for severa l days o r
weeks, electrical equ ipment is gradually sca led
back or sw itched off . Th is reduces energy use and
ensures the vehicle will be ab le to s tart after long
per iods o f time
9 page 155. Some co nvenience
funct io ns, such as interio r lighting o r power seat
adjus tment, may not be av ail abl e un de r c ertain
c irc umstances. These convenience functions will
be available again once you switch the ignition on
and sta rt the engine .
E ven when ele ctrical eq uipment is swi tched off,
t h e eq uipment can still dra in the vehicle ba tte ry
i f the ve hicle is not driven for long periods of
time. Deep drai ning results in a chemica l reaction
that destroys the ins ide of the vehicle batte ry.
The vehicle battery must be cha rged every month
to reduce the risk of this happening
c;> page 339.
Contact an authorized Aud i dea ler or authorized
Audi Se rvice Fac il ity for more information.
Winter operation
Co ld weather places higher demands on the vehi­
cle battery. T his resu lts in reduced starting abili­
ty. Have the vehicle battery chec ked by an au­
thorized Aud i dea ler or authorized Audi Service
Fac ility befo re t he cold ti me of year.

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

Check ing and F illing
-Do not use a glass cleaner that contains
paint solvents, because this could damage
the pa int .
Service interval display
The service interval display detects when your ve­
hicle is due for service.
Checking service int ervals
You can check the remaining distance or time un ­
til the next oil change or next inspection in the
Infotainment system .
.. Se lect in the Infotainment system: the I MENU I
button
> Vehicle > left contro l button > Ser vice
& check s > Ser vice inte rval s.
Resetting the indicator
An author ized Audi dealer or author ized A udi
Serv ice Facility will rese t the serv ice interval d is­
p lay after performing serv ice .
I f you have changed the oil yourself, you must re­
set the oil change interva l.
.. Select in the Infotainment system: the!MENUI
button > Vehicle > left contro l button > Service
& chec ks > Service interval s > Reset oil change
interval.
If an oil change or inspection is due, you can ac­
cess it in the Infotainment system. The display
wo rks in two stages:
-Servic e reminde r: after a certain distance is
driven, a message appears in the inst rument
cluster d isp lay every time the ign ition is switch­
ed on. The rema ining distance and t ime is d is­
played br iefly.
-Service due : if your vehicle has reached a serv­
ice i nterval, a message appears briefly after
swi tching the igni tion on.
(D Note
- Only reset the oil change indicato r if the oil
was changed.
- Fo llow ing the service i ntervals is c ritical to
maintain ing the service life a nd va lue of
you r vehicle, especia lly the engine. Even if
340
the mileage on the vehicle is low, do not ex ­
ceed the time for the next service .

Wheels
Wheels and Tires
General information
.,.Check your tires regularly for
damage (punctures, cuts, cracks
and bulges). Remove foreign ob­
jects from the tire tread.
.,. If driving over curbs or similar
obstacles, drive slowly and ap­
proach the curb at an angle.
.,.Have faulty tires or rims re­
placed immediately.
"'Protect your tires from oil,
grease and fuel.
.,.Mark tires before removing
them so that the same running
direction can be maintained if
they are reinstalled.
"'Lay tires flat when storing and
store them in a cool, dry location
with as little exposure to light as
possible.
(D Note
-Please note that summer and
winter tires are designed for
the conditions that are typical in those seasons. Audi recom­
mends using winter tires dur­
ing the winter months. Low
temperatures significantly de­ crease the elasticity of summ­
er tires, which affects traction
Wheels
and braking ability. If summer
tires are used in very cold
temperatures, cracks can form
on the tread bars, resulting in
permanent tire damage that
can cause loud driving noise
and unbalanced tires.
-Burnished, polished or
chromed rims must not be
used in winter driving condi­
tions. The surface of the rims
does not have sufficient corro­
sion protection for this and
could be permanently dam­ aged by road salt or similar
substances.
Tire designations
Fig. 282 T ir e designations on the side -
wall Ill>
341

Wheels
(D Tires for passenger vehicles
(if applicable)
"P" indicates a tire for a passenger
vehicle. "T" indicates a tire desig­
nated for temporary use.
@ Nominal width
Nominal width of the tire be­
tween the sidewalls in millime­
ters. In general: the larger the
number, the wider the tire.
@ Aspect ratio
Height/width ratio expressed as a
percentage.
@ Tire construction
R indicates a radial tire.
® Rim diameter
Size of the rim diameter in inches.
@ Load index and speed rating
The load index indicates the tire's
load-carrying capacity.
The speed rating indicates the maximum permitted speed
¢ & in
Winter tires on page 357 .
"EXTRA LOAD", "xl" or "RF" indi­
cates that the tire is reinforced or
is an Extra Load tire.
Speed rat- Maximum permitted speed
ing
p
u p to 93 mph (150 km/h)
Q up to 99 mp h (1 60 km/h )
342
Speed rat- Maximum permitted speed
Ing
R
up t o 106 mph (1 70 km /h)
s up to 110 mph (180 km/h)
T up to 1 18 m ph (190 km /h)
u up to 124 mph (200 km/h)
H up to 130 m ph (2 10 km /h)
V up to 149 mph (240 km/h) al
z a bove 14 9 mph ( 240 km /h) al
w up to 168 mph (270 km/h) al
y up to 186 mph (300 km /h)a l
a) For tires above 149 mph (240 km/h ),
tire manufacturers sometimes use the
code
"ZR ".
(j) US DOT number (TIN) and
manufacture date
The manufacture date is listed on
the tire sidewall (it may only ap­
pear on the inner side of the tire):
DOT ... 2216 ...
means, for example, that the tire
was produced in the 22nd week of
the year 2016.
@ Audi Original Tires
Audi Original equipment tires
with the designation "AO" have
been specially matched to your
Audi. When used correctly, these
tires meet the highest standards
for safety and handling. An au­
thorized Audi dealer or author­
ized Audi Service Facility will be
able to provide you with more in­
formation.

® Mud and snow capability
"M/5" or "M+S" indicates the tire
is suitable for driving on mud and
snow. £ indicates a winter tire.
@Composition of the tire cord
and materials
The number of plies indicates the
number of rubberized fabric lay­
ers in the tire . In general: the
more layers, the more weight a
tire can carry. Tire manufacturers must also specify the materials
used in the ti re . These inc lude
stee l, nylon, polyester and other
materials.
@ Maximum permitted load
This number indicates the maxi­
mum load in kilograms and
pounds that the tire can carry.
@ Un iform tire quality grade
standards for treadwear,
traction and temperature resistance
Treadwear, traction and tempera ­
ture
ranges¢ page 359.
@ Running direction
T he arrows indicate the running
direction of unidirectional tires.
You must always follow the speci­
fied running direction
¢page 374.
~ Maximum permitted
inflation pressure
Wheels
T his number indicates the maxi­
mum pressure to which a tire can
be inflated under normal operat ­
ing condit ions .
Glossary of tire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic t ransmission, power steer ­
ing, power brakes, power win­
dows , powe r seats, radio, and
heater, to the extent tha t these
items are avai lab le as factory- in­
stalled equipment (whether in­
s t alled or not).
Aspect ratio
means the ratio of the height to
the w idth of the tire in percent.
Numbers of 55 or lower indicate a
low sidewall for improved steer­
ing response and better overall
handling on dry pavement .
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinfo rced by ply cords and that is
shaped to fit the rim.
...
3 4 3