battery capacity AUDI A5 CABRIOLET 2015 Owners Manual

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The all-wheel drive concept is designed for high
engine power . Your vehicle is exceptionally pow­
erful and has excellent driving character istics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre­
cautions <=>
,&.
Winter tire s
When driving in the winter, your vehicle with all­
wheel drive has an advantage, even with regular
tires. In winter road conditions it may be advisa­
ble to mount w inter tires (or all-season tires) for
improved driveability and braking: these tires
must be mounted on
all four wheels. See also
<=> page 224, Winter tires.
Tire chains
Where tire chains are mandatory on certain
roads, this normally also applies to vehicles with
all-wheel drive <=>
page 224, Snow chains.
Replacing wheels/tires
Vehicles with all-wheel drive must a lways have
tires of the same size. Also avoid tires with differ­
ent tread depths. For details see page
<=>
page 216, New tires or wheels.
Off-Road driving?
Your Audi does not have enough ground clear­
ance to be used as an off-road vehicle. It is there­
fore best to avoid rough tracks and uneven ter­
rain as much as possible. Also refer to
<=>page 177.
A WARNING
Always adjust your driving to road and traffic
conditions. Do not let the extra safety afford­
ed by all-wheel drive tempt you into taking
extra risks.
- Although the all-wheel dr ive is very effec­
t ive, always remember that braking capacity
is limited by tire traction. You should there­
fore not drive at excessive speeds on icy or
slippery road surfaces.
- On wet road surfaces, be careful not to dr ive
too fast because the front wheels could be ­
gin to slide on top of the water (aquap lan­
ing). If this shou ld occur, you will have no
Smart Technology
warning from a sudden increase in engine
speed as with a front-wheel drive vehicle.
Always drive at speeds which are suited to the road conditions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution of
electrical energy and thus optimizes the availa­
bility of electrical energy for starting the engine.
If a vehicle with a conventional energy system is
not driven for a long pe riod of time, the battery
is discharged by idling current consumers (e.g.
i mmobil izer). In certain circumstances it can re­
su lt in there being insufficient energy available to
start the engine.
Intelligent energy management in your vehicle
hand les the distribution of electrical energy.
Starting ability is markedly improved and the life
of the battery is extended.
Basically, energy management consists of
bat­
tery diagnosis , idling current management
and
dynamic energy management.
Battery diagnosis
Battery diagnosis continuously determines the
state of the battery . Sensors determine battery
vo lta ge, battery current and battery tempera­
tu re. This determines the current state of charge
and the power of the battery.
Idling current management
Idling current management reduces energy con­
sumption whi le the vehicle is standing. With the
ignition switched off, it contro ls the energy sup­
ply to the various electrical components. Data
from battery diagnosis is considered.
Depending on the battery's state of charge, indi­
vidual consumers are gradually turned off to pre­
vent excessive discharge of the battery and thus
maintain starting capability .
Dynamic energy management
While the vehicle is being driven, dynamic energy
management distr ibutes the energy generated ..,.
175

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Disconnecting the battery terminals
Some vehicle functions (power window regula­
tors , for example) are lost if the battery termi­
nals are disconnected. These functions have to be
re learned after th e battery terminals are con­
nected again. To prevent this, the batte ry should
only be disconnected from the ve hicle electrical
system when absolutely necessary for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period of
several days or weeks, e lectrica l components are
gradually cut back or switched off. This reduces
energy consumption and maintains starting ca­ pability over a longer period
c:> page 175 .
Some of the conven ience functions may not oper­
ate, such as the interior lights or the power seat
adjustment. The convenience functions will be
available aga in when you turn on the ignition and
start the engine.
Winter operation
During the winter months, battery capacity tends
to decrease as temperatures drop. This is because
more power is also consumed while s tart ing, and
the headlights, rear window defogger, etc ., are
used more often .
Avoid unnecessary power consumption, part icu­
larly in city traffic or when traveling only short
d istances . Let your authorized Aud i dealer check
the capacity of the vehicle battery before w inter
sets in ¢
page 206 . A well charged battery will
not only prevent starting problems when the
weather is cold, but will also last longer.
(D Tips
If your vehicle is left standing for severa l
weeks at extremely low temperatures, the ve­
hicle battery should be removed and stored
where it will not freeze. This will prevent it
from being damaged and having to be re­ placed.
Checking and Filling
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart­
men t under the floor. Before you check anything
in the luggage compartment ,
read and heed all
WARNINGS
c:> .&_ .
Always heed the safety warnings, when working
on the vehicle battery or the vehicle electr ical
system to prevent injury .
The following WARNINGS are very important
when working on the battery :
Always heed the following WARNING SYM-
BOLS and safety precautions when working on
the battery.
®
Always wear eye protection.
A
Battery acid contains sulfuric acid. Al-
ways wear gloves and eye protection.
@
No
- sparks
- flames
- smoking.
~
When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal injury.
®
Always keep the battery well out of reach
of children.
A WARNING
= -
Whenever working on the battery or on the
e lectr ical system, there is the risk of injury,
accident and even f ire. Read and heed the fol ­
lowing WARNINGS:
- Always wear eye protection . Do not let bat­
tery ac id or any lead particles get on your
skin or clothing. Shield your eyes. Exp losive
gases can cause blindness or other in jury.
- Battery acid conta ins sulfuric acid . Sulfuric
acid can cause blindness and severe burns.
- Always wear g loves and eye protection. Do
not tilt the battery because acid could leak
out of the ventilation openings. ...,
205

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.

Emerg enc y s it uat ion s
Emergency situations
General
T his c hapt er is inte nded fo r tra ined e merg ency
c rews a nd worki ng p ers onn el w ho h ave the nec­
e ssa ry tool s and equipm ent t o perf orm the se
op era tion s.
Starting by pushing or
towing
CD Note
Vehicl es with an automa tic tra nsmission
c annot be st arted by pushing or towing .
Starting with jumper
cables
If necessary, the engine con be started by con­
necting it to the battery of another vehicle .
If the engine should fail to start because of a d is­
charged or weak battery, the battery can be con­
nected to the battery of
another vehicle, us ing a
p air of j umpe r cables to start the engine.
Jump er c abl es
Use only jumper cab les of sufficiently largec ross
sec tion
to carry the starter current safely. Refer
to the manufacturer's specifications.
Use on ly jumper cables with
insulated term inal
clamps which are d istinctly mar ked:
plus (+ ) cabl e in most cases co lored re d
minu s(-) cable
in most cases colored black .
A WARNING
Batteries contain electricity, ac id, and gas.
Any of these can cause very ser ious or fatal in­
jury . Fo llow the inst ruct ions be low for safe
hand Ling of your veh icle's battery.
- Always shield your eyes and avoid leaning
over the battery whenever possible.
- A discharged battery can freeze at tempera­
tures just below 32 °F (0 °C). Before con­
nect ing a jumper cab le, you must thaw the
240
frozen battery completely, otherwise it
could explode.
- Do not allow battery acid to contact eyes or
skin. Flush any contacted area with water immed iately.
- Improper use of a booster battery to start a
veh icle may cause an explosion.
- Vehicle batteries generate explosive gases .
Keep sparks, flame and lighted cigarettes
away from batteries.
- Do not try to jump start any vehicle with a
low acid level in the battery.
- The voltage of the booster battery must al­
so have a 12-Volt rat ing . The capacity (Ah)
of the booster battery should not be lower
than that of the discharged battery. Use of batter ies of different voltage or substantial­
ly different "Ah" rating may cause an explo­
sion and personal injury .
- Never charge a frozen battery . Gas trapped
in the ice may cause an explosion .
- Never charge or use a battery that has been
frozen . The battery case may have be weak­
ened .
- Use of batter ies of different voltage or sub­
stantially d ifferent capacity (Ah) rating may
cause an explosion and injury. The capacity
(Ah) of the booster battery sho uld not be
lowe r than that of the discharged battery.
- Before you check anything in the engine
compartment, always read and heed a ll
WARNINGS
qpoge 195.
CD Note
-App lying a higher voltage booster battery
wi ll cause expensive damage to sensitive
elec tronic components, such as control
units, re lays, radio, etc.
- T here must be no electrical contact between
the vehicles as otherwise cu rrent cou ld al­
ready start to flow as soon as the positive
(+) termina ls are connected.
@ Tips
The discharged battery must be properly con-
nected to the vehicle's electrical system. .,.