
Check ing and F illing
Read and follo w the WARN IN GS before check
ing anything in the engine compartment
c::> page 236, Working in the engine compart
ment.
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged .
Applies to vehi cles w ith p lug-in hybrid dr ive* :
switch the ignition off before re leasing the hood
so that the gasoline engine does not start auto mat ica lly.
... With the driver's door open, pull the lever be
low the instrument panel in the direction of the
arrow
c::> fig. 191 .
... Raise the hood s lightly c::> ,&. .
... Press the rocker switch under the hood upward
c::> fig. 192. This releases the catch.
... Open the hood .
A WARNING
Never open the hood when you see that steam
or coolant drips from the engine compart-
238
ment- there is a dange r of bu rns! Wait unt il
no steam or coolant flows out.
Closing the hood
... Push the hood down until the force of the strut
is overcome.
... Let the hood fall lightly into the latch .
Do not
press it in .
c::> ,&..
A WARNING
If the hood is not latched complete ly, it could
f ly up wh ile you are dr iving and obst ruct your
vision .
- For safety reasons, the hood m ust always be
closed securely while driv ing. Because o f
this, always chec k the hood after closing it
to make sure it is latched correctly. The
hood is latched if the front corners cannot
be lifted.
- If you notice that the hood is not latched
while you are driving, stop immed iate ly and
close it, because this increases the risk of an
accident.

.... N
0 > CX)
.... I.Cl U"I
.... I.Cl ....
corrosion can cause a loss of coolant and
serious engine damage .
- Do not add any type of radiator leak sealant
to your vehicle's engine coolant . Adding ra
diator repair fluid may adversely affect the
function and performance of your cooling
system and could result in damage not cov
ered by your New Vehicle Limited Warranty.
Adding coolant
F ig . 198 Engine compa rtment: mark in gs on t he coo lant
expa nsion tank
Read and follow the WARNINGS before check
ing anything in the engine compartment
¢ page 236, Working in the engine compart
ment.
Checking the engine coolant level
• Park your vehicle on a level surface .
• Switch the ignition off .
• Read the coolant level on the coolant expansion
tank
¢ fig. 198 . The coolant level must be be
tween the markings when the engine in cold .
When the engine is warm it can be slightly above the upper marking.
Adding coolant
Plug-in hybrid drive*: your vehicle has two cool
ant expansion tanks that are separate from each
other. The smaller of the two expansion tanks
must not be opened
¢ page 108. Read and fol
low the important safety precautions ¢
A in
Coolant on page 109.
Requirement: there must be a residual amount of
coolant in the expansion tank ¢(D .
• Let the engine cool down .
Checking and Filling
• Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockwise
¢ A .
• Add coolant mixed in the correct ratio
¢
page 244 up to the upper marking.
• Make sure that the fluid level remains stable.
Add more coolant if necessary.
• Close the cap securely .
A coolant loss suggests a leak. Immediately drive
your vehicle to an authorized Audi dealer or au
thorized Audi Service Facility and have the cool
i ng system inspected. If the cooling system is not
leak ing, a loss can come from the coolant boiling
through overheat ing and being pushed out of the
cooling system .
,&_ WARNING
-= -The cooling system is pressurized and can be
come very hot. To reduce the risk of burns
from hot coolant:
- Do not open the coolant expansion tank cap
with the engine hot. There is a risk of burns.
- Stop the engine and allow it to cool.
- Protect your face, hands and arms from es-
caping coolant and steam by covering the
coo lant tank cap with a large, thick cloth.
- Turn the coolant tank cap counterclockwise
slowly and keep light pressure on the cap.
- To reduce the risk of burns, do not allow any
antifreeze or coolant to drip onto the ex
haust system or hot engine components.
The ethylene glycol in engine coo lant can
catch fire under certain circumstances .
- The coolant additive and the coolant can be
dangerous to your health . For th is reason,
keep the coolant in the original container
away from children. There is a risk of poi
soning .
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, wh ich
increases the risk of persona l injury.
(J) Note
Do not add coolant if the expansion tank is
empty . Air could enter the cooling system and
damage the eng ine.
If this is the case, do not ..,_
245

,....,
N
0 > co ,....,
you.
A WARNING
- Brake fluid is poisonous. It must be stored
only in the closed original container out of
the reach of chi ldren!
- Brake failure can resu lt from old or inappro
priate brake fluid. Observe these precau
t ions:
- Use only brake flu id that meets SA E speci
fication
J 1703 and conforms to Federal
Motor Vehicle Standard 116. Always check
with your authorized Audi dealer to make
sure you are using the correct brake fluid.
The correct type of brake fluid is also indi
cated on the brake flu id reservoir.
- The brake fluid must be new. Heavy use of
the brakes can cause a vapor lock if the
brake fluid is left in the system too long.
This can ser iously affect the efficiency of
the brakes as well as your safety. This
could result in an acc ident.
(D Note
Brake fluid w ill damage the pa int of your vehi
cle.
For the sake of the environment
Because of the prob lem of proper disposal of
brake flu id as well as the special tools re
quired and the necessary expertise, we rec
ommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
All work on the battery requires expert knowl
edge.
Read and foll ow t he WARNING S before check
ing anything in the engine compartment
¢ page 236, Working in the engine comport
ment.
Ch eck ing and Filling
Plug -in hybrid drive* : you can find important in
formation about the high -vo ltage battery under
¢ page 98.
The battery in yo ur Audi does not need any ma in
tenance under
normal operating conditions . Audi
recommends having the electrolyte level check
by an authorized Audi dealer or author ized Audi
Service Facility when there are
high outside tem
peratures or when dr iving all day. The e lectrolyte
level should also be checked each time the bat
tery is charged¢
page 249.
Have the battery checked when you bring your ve
hicle in for an inspection. It is a good idea to re
place the battery if it is more than 5 years old.
D uring certa in types of a irbag deployments, the
battery is d isconnected from the veh icle electri
cal system for safety reasons¢
& in Repair, core
and disposal of the airbags on page 199.
Di sco nnecting the battery te rminal s
The battery should not be disconnected. Several
vehicle functions (power windows, for example)
will be lost when the battery is disconnected. The
funct ions must be reprogrammed after connect
ing the battery. To avoid this, the battery should
only be disconnected from the vehicle electrical
system when it is absolutely necessary.
To reprogram the functions, proceed as follows:
Function Reprogramming
Power window one-¢ page 44, Correcting
touch up/down func-power window molfunc-
tion tions
Remote control key or
If the vehicle does not
Convenience key react to the key, it must
be synchronized
¢page 37
Dig ita l clock ¢page 10
ESC indicator light The indicator light goes
out after driving a few
meters
247

Tires and 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 269 .
"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
up to 93 mph (150 km/h)
Q up to 99 mph (160 km/h )
254 Speed rat- Maximum permitted speed
ing
R
u p to 106 mph (170 km/h)
s up to 110 mph (180 km/h)
T up to 118 mph (190 km/h)
u up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
V up to 149 mph (240 km/h)al
z above 149 mph (240 km/h)al
w up to 168 mph (270 km/h)al
y up to 186 mph (300 km/h)al
a) Tire manufacturers sometimes use "ZR"
for ti res with a maximum speed above
149 mph (240 km/h).
(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 ... 2215 ...
means, for example, that the tire
was produced in the 22nd week of
the year 2015.
@ Audi Original equipment
tires
Audi Original equipment tires
with the designation "AO" or "RO"
have been specially matched to
your Audi . When used correctly,
these tires meet the highest standards of safety and handling.
An authorized Audi dealer or au
thorized Audi Service Facility will .,..

Uniform Tire Quality Gr ading
is a tire information system devel
oped by the United States Nation
al Highway Traffic Safety Admin
istration (NHTSA) that is designed
to help buyers make relat ive com
parisons among tires. The UTQG
is not a safety rating and not a
guarantee that a tire will last for
a prescribed number of miles
(kilometers) or perform in acer
tain way. It simply gives t ire buy
ers additional information to
combine with other considera
tions, such as price, brand loyalty
and dealer recommendations . Un
der
UTQG, tires are graded by the
tire manufacturers in th ree areas:
treadwear, traction, and tempera
ture resistance. The UTQG infor
mation on the tires, molded into
the sidewalls .
U.S. DOT Tire Identification
Number (TIN )
This is the tire's "serial number".
It begins with the letters "DOT"
and indicates that the tire meets
all federal standards . The next
two numbers or letters indicate
the plant where it was manufac
tured, and the last four numbers represent the week and year of
manufacture. For example,
Tires and wheels
DOT ... 2215 ...
means that the tire was produced
in the 22nd week of 2015. The
other numbers are marketing co des that may or may not be used
by the t ire manufacturer. This in
formation is used to contact con
sumers if a tire defect requires a
recall.
Vehicle capacity weight
means the rated cargo and lug
gage load plus 150 lbs . (68 k ilo
grams) times the vehicle's desig
nated seating capacity.
Vehicle ma ximum load on the
tire
means that load on an indiv idual
tire that is determined by distrib
ut ing to each axle its share of the
maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual
tire that is determined by dist rib
uting to each ax le its share of the
curb weight, accessory weight,
and normal occupant weigh t (dis
tributed in accordance with
c:::> ta
ble on page 265) and dividing by
two. .,.
259

different tire speeds. For this reason, in case of emergency, only
use a spare tire* that is the same
circumference as the regular
tires.
&_ WARNING -
-Only use tire/rim combina tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident could result.
-For technical reasons, it is not possible to use tires from oth
er vehicles - in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you
select have enough clearance
to the vehicle . Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif
ferent construction can differ
greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged and this can reduce driving
safety and increase the risk of
an accident.
Tires and wheels
-Only use tires that are more
than 6 years old when abso lutely necessary and drive
carefully when doing so.
-Do not use run-flat tires on
your vehicle. Using them when
not permitted can lead to ve
hicle damage or accidents.
-If you install wheel covers on the vehicle, make sure they allow enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 203 Tire profile: tread wear indica
tor
Tire wear
Check the tires regularly for wear .
- Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear. ..
261

Tires and wheels
-Have an authorized Audi dealer or authorized Audi Service Facili
ty check the wheel alignment if
there is unusual wear .
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear more quickly.
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread pattern, which are bars that are 1/16 in. (1.6 mm) high and are
spaced evenly around the tire per
pendicular to the running direc
tion
¢ fig . 203 . The letters "TWI"
or triangles on the tire sidewall indicate the location of the tread
wear indicators.
The tires have reached the mini mum tread depth
l) when they
have worn down to the tread wear
indicators. Replace the tires with
new ones
¢ ..&. .
Wheel rotation
Rotating the wheels regularly is
recommended to ensure the tires
1> Obey any applicable regulations in your
country.
262
wear evenly. To rotate wheels, in
stall the wheels from the rear
axle on the front axle and vice
versa . This will allow the tires to
have approximately the same
length of service life.
For unidirectional tires, make
sure the tires are installed accord
ing to the running direction indi
cated on the tire sidewall
¢page 288.
Hidden damage
Damage to tires and rims can of
ten occur in locations that are hidden . Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage.
Reduce your speed immediately.
Check the tires for damage . If no
damage is visible from the out
side, drive slowly and carefully to
the nearest authorized Audi deal
er or authorized Audi Service Fa
cility to have the vehicle inspect
ed .
.&_ WARNING
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety. ,..

Tires and wheels Model/ Tire designation
Tire pressure
Engine Normal load
Maximum load
(up to 3 people)a>
front rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
A3 Sportb 225/45 Rl 7 91 Y ack: High Performance
30 210 28 190 36 250 36 250
2.0L
225/40 Rl8 92Y XL
4 cylinders High Performance
35 240 32 220 36 250 36 250
(Diesel en-
225/45 Rl7 91H
gine) All Season
33 230 30
210 41 280 41 280
225/40 Rl8 92H XL
All Season
36 250 33 230 41
280 41
280
A3 Sportb 205/55 Rl6 91 V
ack e-tron: High Performance
35 240 35 240 36 250 39 270
1.4 liters
225/40 Rl8 92Y XL
4 cylinders High Performance
33 230
33 230
36 250 39 270
(Gasoline/
225/45 Rl 7 91H
electric en- All Season
33 230 33 230 38 260 38 260
gine)
225/40 Rl8 92H XL
All Season
33 250 33 250 41 280 41 280
XL= reinforced or extra load tire. It may also appear as xi, EXTRA LOAD, or RF on the tire sidewall.
a) 2 people in the front, 1 person in the rear
A WARNING
Please note the important safe
ty precautions regarding tire pressure ¢
page 263 and load
limits ¢
page 266.
Tires and vehicle load limits
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle
that is overloaded will not handle
well and is more difficult to stop. Overloading can not only lead to
loss of vehicle control, but can al-
266
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
and sudden deflation that can
cause the vehicle to crash.
Your safety and that of your pas sengers also depends on making
sure that load limits are not ex
ceeded. Vehicle load includes ev
erybody and everything in and on
the vehicle. These load limits are
technically referred to as the vehi cle's
Gross Vehicle Weight Rat-
ing
("GVWR"). ..,