2015 AUDI A5 CABRIOLET Owners Manual

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~ Open the engine hood ¢page 195 .
~ Open the cover on the positive pole ~ fig. 177.
~ Connect the charger connectors accord ing to
the instructions to the
j ump sta rt bolts . (Bolts
under the cover= "positive", Bo lts with hex
head = "negat ive") .
~ Only now plug the mains lead for the charg ing
equipment into the wall outlet and turn it on
~ & -
~ Ma ke s ure th e char gin g rate is not ov er
3 0 amp s/14 .8 Volt .
~ When the battery is fully charged: Turn the
charging equipment
off and remove the mains
l ead from the wall outlet.
~ Now remove the clamps for the charging equip-
ment.
~ Close the cover on the positive pole .
~ Close the hood 9 page 195.
A discharged battery can freeze at temperatures
of only 32 °F (0 °C). Allow a frozen battery to
thaw completely before attempting to charge it
9 & . However, we recommend not using a
thawed battery again because the batte ry casing
can be cracked due to ice formation and can leak
battery ac id.
Battery charg ing (Ma ximum charging rate of
30 amps /14.8 Volt )
When charging at low voltages (e.g. w ith a tri ckl e
c h arge r),
the battery cables do not have to be
disconnected first. The battery caps shou ld
not
be opened when charging a battery.
It is not necessary to remove the batte ry from
the luggage compartment.
F a st charging th e battery (charg ing r ate
above 14.8 Vo lts )
For technical reasons do no t use a battery charg­
e r that uses voltage greater than 14.8 Volts to
charge your vehicle's battery .
A WARNING
Charging a battery can be dangerous.
- Always follow the operating instructions
provided by the battery charger manufactur­
er when charging your battery.
Checking and Fillin g
-Never charge a frozen battery. It may ex­
plode because of gas trapped in the ice. Al­
low a frozen battery to thaw out first.
- Do not reuse batteries wh ich were frozen.
The battery housing may have cracked and
weakened when the battery froze.
- Charge the battery in a well ventilated area. Keep away from open flame or electrical
spark. Do not smoke. Hydrogen gas generat­
ed by the batte ry is explosive.
- To reduce the danger of explosion, never
connect or d isconnect charger cables wh ile
the charger is operating.
- Fast charging a battery is dangerous and
should only be attempted by a competent
technician w ith the proper equipment.
- Battery acid that may sp ill dur ing charging
should be washed
off with a solut ion of
warm water and baking soda to neutralize the acid .
@ Note
Never use a fast charger as a booster to start
the engine . This w ill ser iously damage sensi­
tive electronic components, suc h as control
units, relays, radio, etc., as we ll as the battery
charger.
Battery replacement
The new battery must have the same specifica­
tions and dimensions as the original equipment
battery.
Intelligent energy management in your vehicle is
responsible for distributing the elect rical energy
throughout your vehicle
9 page 175. T he intelli­
gent energy management system w ill keep the
engine battery charged better then vehicles with­
out this system. To make sure the additional elec­
trical energy is avai lab le once again after you
have changed the battery, we recommend that
you install batteries of the same type and manu­
facture only (the same as those installed at the
t ime your vehicle was delivered) . Specifications
are listed on the battery housing . Your autho r­
ized Audi dealer must code the battery in the en-
ergy management system to enab le you to use .,,.
207

Checking and Fill in g
th e e nergy management functions correctly after
replacing the battery.
If i t is not poss ible to use a battery of this type,
the new battery must have the same capacity,
voltage (12-vo lts), amperage, construct ion and
p lug sealing.
When insta lling the battery, make sure the igni­
tion and all elec trical consumers are t urned off.
CD Note
Make sure the ventilation hose on the s ide of
t he batte ry is connected, otherwise fumes or
bat tery ac id can leak out.
@ For the sake of the environment
Because of the problem of proper d isposa l of
a battery, we recommend your author ized
Audi dea le r change the battery for yo u. Ba t­
teries contain su lfuric acid and lead and must
always be disposed of properly in compliance
w ith all environmenta l reg ulations. D isposing
of vehicle batteries improperly is very danger­
ous to the environment.
Windshield/headlight* washer container
Fig. 178 Engine co mpa rtment : Cove r on th e w in d shiel d
an d h ead ligh t• was her fl uid container
The washer fluid containe r is marked with the
symbol
O on its cap ¢ fig . 178 , ¢page 197,
fig . 172 .
.,. Before you check anyth ing in the eng ine com­
partment , alw ays re ad and he ed all WARN·
I NGS
¢ ,& in Working in the engine comport­
ment on page 195 .
208
.,. Lift the filler cap tongue to add washer fluid.
Yo u can fill the container to the top.
.,. Press the cap back onto the filler neck after fill-
ing the container .
You can find the reservoir ca p acit y in the table in
~ page 246.
Clean water should be used when filling up. If
possible, use soft water to prevent scaling on the
washer jets . Always add a g lass cleaner solution
(with frost protection in the winter) .
CD Note
Do not mix engine coolant antifreeze or any
other additives to fill up the windsh ield wash­
er reservoir.

Wheels
Wheels and Tires
General information
.,.Che ck 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.
"'Protec t your tires from oil,
grease and fuel.
.,.Ma rk 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 tem­
peratures, 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. 179 T ir e designations on the sid e-
wall ,..
209

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
W inter tires on page 224 .
"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)
210
Speed rat- Maximum permitted speed
Ing
R up 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)a>
z above 149 mph (240 km/h)a)
w up to 168 mph (270 km/h)a)
y up to 186 mph (300 km/h)a)
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 ... 4514 ...
means , for example, that the tire
was produced in the 45th week of
the year 2014.
@ 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.
Your authorized Audi dealer will
be happy to provide more infor­
mation.

M N 0 u. "! ... IO "? N U'> .....
® Mud and snow capability
"M/S" or "M+S" indicates the tire
has characte ris tics that make it
suitable for driving on mud and snow .
& indica tes a winter tire.
@ Composition of the tire cord
and materials
T he number of plies indicates the
number of rubber ized fabric lay­
ers in the tire . In general: the
more layers, the more weight a
tire can carry. Tire manufacturers
must also specify the mater ials
used in the tire. These include
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.
@ Uniform tire quality grade
standards for treadwear,
traction and temperature resistance
Treadwear , traction and tempera­
ture ranges
c::::> page 225 .
@Running direction
The arrows ind icate the running
direction of unidirect ional tires.
You must always follow the speci- fied running direction
c::::> page 235.
€3) Ma
ximum permitted
inflation pressure
Whe els
This number indicates the maxi­
mum pressure to which a tire can
be inflated unde r normal operat­
ing conditions.
Glossary of t ire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer­
ing, power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items are available as factory-in ­
stalled equipment (whether in­
stalled or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent. Numbers of 55 or lower indicate a
low s idewall for improved steer­
ing response and better overall
handling on dry pavement . .,.
211

Wheels
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim .
Bead separation
means a breakdown of the bond
between components in the bead.
Cord
means the strands form ing the
plies in the tire.
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated
size that has not been driven for
more than a coup le of miles (kilo­
meters) at low speeds in the three
hour period before the tire pres­
sure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capacity of
fuel, oi l, and coolant , air condi ­
tioning and additional weight of optional equipment.
E x tra load tire
means a tire des igned to operate
at higher loads and at higher in-
2 12
flation pressures than the corre­
sponding standard tire . Extra load
tires may be identified as "XL",
"xl", "EXTRA LOAD", or "RF" on
the sidewall.
G ross A xle Weight Rating
("GAWR ")
means the load-carrying capacity
of a single axle system , measured
at the tire-ground interfaces .
Gross Vehicle Weight Rating
( "GVWR" )
means the max imum total loaded
weight of the vehicle .
Groove
means the space between two ad­
jacent tread ribs .
Load rating (code )
means the max imum load that a
tire is rated to carry for a given in­
flation pressure . You may not find
this information on all tires be­ cause it is not required by law.
Ma ximum load rating
means the load rating for a tire at
the maximum permissible infla­
tion pressure for that tire .
Maximum loaded vehicle
w eight
means the sum of: ...

M N 0 u. "! ... IO "? N U'> .....
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Product ion options weight
Maximum (permissible)
inflation pressure
means the max im um cold infla­
tion pressu re to which a tire may
be inflated . Also called "maxi­
mum inflation pressure ."
Normal occupant weight
means 150 lbs . (68 kilog rams)
times the number of occupants
seated in the veh ic le up to the to­
tal seating capacity of yo ur vehi­
c le.
Occupant distribution
means d istr ibution of occupants
in a vehicle.
Outer diameter
means the overall diameter of an
inflated new tire .
Overall width
means the linear dis tance be­
tween the exter iors of the side­
walls of an inflated tire, including
elevations d ue to labe ling, deco­
rations , or protective bands or
ribs .
Whee ls
Ply
means a layer of rubbe r-coated
parallel cords .
Production options weight
means the comb ined weight o f
those installed regular production
options weighing over 5 lbs . (2 .3
kg) in excess o f those s tandard
items which they re place , not pre ­
viously conside red in cu rb weight
or accessory weight, including heavy duty brakes, ride levelers,
heavy du ty bat tery, and special
trim .
Radial ply tire
means a pneumat ic t ire in which
the ply co rds that ex tend to the
beads are laid at substantially 90
degrees to t he ce nterli ne of the
tread .
Recommended inflation
pressure
see ~ page 212, Cold tire infla­
tion pressure .
Reinforced tire
means a tire designed to operate
at higher loads and at h igher in­
flat ion pressures than the corre­
sponding standard tire . Rein­
f orced tires may be identified as
2 13

Wheels
"XL" "xl" "EXTRA LOAD" or "RF" I I I
on the sidewal l.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the
bead seat. If you change yo ur
wheel size , you w ill have to pur­
chase new tires to match the new rim diameter .
Rim size designation
means rim diameter and width.
Rim width
means nomina l distance between
rim flanges .
Sidewall
means that port ion o f a t ire be­
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend ­
ed periods of t ime. The rat ings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 210 .
You may not find
this information on all tires be­
cause it is not required by la w.
2 14
The speed rating letter code ,
where applicable , is mo lded on
the tire sidewall and indicates the maximum permiss ible road
speeds
¢ .&. in Winter tires on
page 224.
Tire pressure monitoring
system*
means a system that detects
when one or mo re of a ve hic le's
tires are under inflated and illumi ­
na tes a low tire p ressu re warning
tellta le .
Tread
means that portion of a tire that
comes into contact w ith the road.
Tread separation
means pu lling away of the tread
from the t ire carcass.
Treadwear indicators (TWI)
means the projections wi thin the
principal grooves designed to give
a visua l indication of the deg rees
of wear of the tread . See
¢ page 218 , Treadwear indicator
for mo re information on measur­
ing t ire wear.