2021 AUDI A5 battery

8W7012721BB
Additional settings

> Press on the notification, or
> Open the notification in the notification center
on > page 23 and press on the notification.
> Follow the system instructions.
Depending on the scope of the update, the online
system update may only be started if you follow
these instructions:
>» Switch the emergency flashers off, if necessary
> Make sure that the starter battery is charged.
> To start the update, exit and lock the vehicle.
The MMI will start the installation. When the up-
date has ended, a notification will be displayed.

ZA\ WARNING
Depending on the scope of the installation,
the ignition must not be switched on during
the installation to ensure the installation

completes successfully.

() Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
=@ in General information on page 182.
@ Tips
The software update may take some time.
WEE Tel
Applies to: vehicles with online system update
Online system update: incomplete. Warning!
Vehicle functions limited
If an error occurs when installing an online sys-
tem update, certain functions such as the emer-
gency call function may not be available. Drive to
an authorized Audi dealer or authorized Audi
Service Facility immediately to have the malfunc-
tion corrected.
Connected devices
Displayed connected devices
Requirement: the vehicle must be stationary and
the ignition must be switched on.
> Applies to: MMI: Select on the home screen:
SETTINGS > Connected devices.
Possible menu items:
— Telephone 1
— Telephone 2
— Audio player
— Wi-Fi hotspot
— Headset
Audi smartphone interface
You can connect your smartphone to the MMI
> page 219.
myAudi app
This function is available if the myAudi app is in-
stalled on your mobile device and started, and if
the mobile device is connected with the vehicle’s
Wi-Fi hotspot.
() Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
=> page 182.
Managing connected devices
Requirement: the connected devices menu must
be displayed > page 223.
Connecting a device
Requirement: Bluetooth visibility must be acti-
vated in the MMI & page 222 and mobile device.
> Press on a menu item, such as Telephone 1.
> To search for and connect your mobile device,
press New connection = page 171.
Selecting a connected device
> Press on a menu item, such as Telephone 1.
> Press on the desired mobile device in the list of
displayed devices. The connection will be made.
Disconnecting a connected device
> Press on a menu item, such as Telephone 1.
> Press on the connected mobile device. The se-
lected mobile device will be disconnected from
the MMI.
Deleting a device
> Press on a menu item, such as Telephone 1.
223
>

8W7012721BB
Checking and Filling


— Never work near open flames.
— Always have a working fire extinguisher
nearby.
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Limit your exposure to exhaust and chemi-
cals to as short a time as possible.


ZX WARNING
California Proposition 65 Warning:
— Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu-
ids contained in vehicles and certain prod-
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.

0) Note
When filling fluids, be sure not to add any flu-
ids to the wrong reservoirs. Otherwise severe
malfunctions and engine damage will occur.
@ For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids,
bring your vehicle to an authorized Audi deal-
er or authorized Audi Service Facility to be
checked.

2) The &> symbol is not available in all countries.

Opening and closing the hood
The hood is released from inside the vehicle.


ig. 166 Unlocked hood: lever
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
> With the door open, pull the lever 2 below
the instrument panel in the direction of the ar-
row > fig. 165.
> Raise the hood slightly > page 230.
» Press the lever > fig. 166 in the direction of the
arrow. This releases the hooks.
> Open the hood.
Closing the hood
> Push the hood down until you override the
force of the struts.
> Let the hood fall lightly into the latch. Do not
press it in. > /\.
Messages
B Warning! Hood is not locked. Stop vehicle
and check the lock
231

Checking and Filling

The hood latch is not locked correctly. Stop im- this, always check the hood after closing it

mediately and close the hood. to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ZA\ WARNING ay
— Never open the hood when there is steam or — If you notice that the hood is not latched
coolant escaping from the engine compart- while you are driving, stop immediately and
ment, because there is a risk that you could close it, because driving when the hood is
be burned. Wait until no steam or coolant is not latched increases the risk of an accident.
escaping.
— For safety reasons, the hood must always be
latched securely while driving. Because of



Fig. 167 Typical location of the reservoir and the engine oil filler opening (example)
Observe the safety precautions > page 230. Coolant expansion tank (L) > page 237
a Brake fluid reservoir (OC) > page 238

Washer fluid reservoir (>) > page 242
Jump start points: (+) under the cover The coolant expansion tank and the engine oil
= page 241, Charging the 12 Volt vehicle filling opening may be located in different places
battery > page 280, Preparation within the engine compartment, depending on
Engine oil filler opening (%57) > page 234 the engine version.
() Sticker* for engine oil specifications
=> page 233

232

8W7012721BB
Checking and Filling


accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet
the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.

Switch off all electrical equipment that is not
needed. If necessary, some equipment will be
switched off automatically. Vehicle functions or
driving stability may be limited. Drive to an au-
thorized Audi dealer or authorized Audi Service
Facility immediately.
= Electrical system: low battery charge. Bat-
tery
will be charged while driving
The starting ability may be impaired.
If this message turns off after a little while, the
vehicle battery has charged enough while driving.
If this message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility.

@) Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.
Electrical system
If the = f B or = indicator light turns on,
there is a malfunction in the power supply, the
battery, or the vehicle electrical system.
= f B Electrical system: malfunction! Safely
stop vehicle
Do not continue driving and switch the ignition
off > A\. See an authorized Audi dealer or author-
ized Audi Service Facility for assistance.
= Electrical system: malfunction! Restart not
possible. Please contact Service
If you switch the ignition off, you will not be able
to restart the vehicle. Vehicle functions or driving
stability may be limited. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately.
= Electrical system: malfunction! Please con-
tact Service
Z\ WARNING
When there is an electrical system malfunc-
tion, vehicle functions may not work and driv-
ing stability may be limited, which increases
the risk of an accident. Do not continue driv-
ing and switch the ignition off. See an author-
ized Audi dealer or authorized Audi Service Fa-
cility for assistance.


Battery
lala Meme cd)
Because of the complex power supply, all work on
batteries such as disconnecting, replacing, etc.,
should only be performed by an authorized Audi
dealer or authorized Audi Service Facility > A\.
Multiple batteries with different technologies
may be installed in your vehicle:
— Vehicle battery (for example, for starting the
engine, basic power supply) > page 240, 12
Volt vehicle battery or > page 241, Other bat-
tery types
— Auxiliary battery (for example, for recuperation
or optional equipment) > page 241, Other bat-
tery types
Not running the vehicle for long periods of
time
The battery will gradually drain if the vehicle
does not run for long periods of time. To ensure
239
>

Checking and Filling

that the vehicle can still be started, the electrical
equipment will be limited or switched off. Some
convenience functions, such as interior lighting
or power seat adjustment, may not be available
under certain circumstances. The convenience
functions will be available again when you start
the engine.
Even when electrical equipment is switched off,
the equipment can still drain the battery if the
vehicle is not driven for Long periods of time.
Deep draining results in a chemical reaction that
destroys the inside of the battery. The battery
must be charged every month to prevent this
= page 241. Contact an authorized Audi dealer or
authorized Audi Service Facility for more infor-
mation.
Winter operation
Cold weather places an especially high load on
the 12 Volt vehicle battery. Have the battery
checked by an authorized Audi dealer or author-
ized Audi Service Facility before cold weather be-
gins.
so that it will not be destroyed by “freezing”
= page 241, Charging the 12 Volt vehicle
battery.
— There are electrical components under the
cargo floor behind a trim panel that warm
up during operation. To reduce the risk of
the components overheating, do not store
objects such as blankets under the cargo
floor. If the components overheat, they will
switch off temporarily. This will be indicated
by a message that will be displayed in the
instrument cluster until the temperature re-
turns to normal.
12 Volt vehicle battery
Explanation of warnings:
Always wear eye protection.

forbidden.

ZX WARNING
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Never connect a charging cable or jump
start cable directly to the 12 Volt vehicle
battery. Only use the connections in the en-
gine compartment > page 241.

Z\ WARNING
California Proposition 65 Warning:
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.

@) Note
— If the vehicle will be parked for long periods
of time, protect the battery against the cold
240
A highly explosive mixture of gases can
form when charging batteries.

Always keep children away from battery
acid and the battery.
Battery acid is highly corrosive. Always
wear protective gloves and eye protection.
® Fire, sparks, open flame, and smoking are

@/ | Always follow the instructions in the oper-
(Q | ating manual.

@) For the sake of the environment

% Lead-acid batteries must be disposed of
using methods that will not harm the environ-
ment. Do not dispose of them in household
trash. They contain harmful substances, such
as sulfuric acid and lead, and also recyclable
raw materials. Contact an authorized Audi
dealer or authorized Audi Service Facility for
more information.

8W7012721BB
Checking and Filling

Other battery types
Explanation of warnings:
Fire, sparks, open flame, and smoking are
& forbidden.
Always keep children away from battery
@) acid and the battery.


@/ | Always follow the instructions in the oper-
fQ | ating manual.

Z\ WARNING
All work on the batteries must only be per-
formed by an authorized Audi dealer or au-
thorized Audi Service Facility.
— Gases that escape from these different bat-
tery types can be poisonous or flammable.
— The contents of these battery types can be
corrosive. If any battery contents come into
contact with the skin, flush the affected
area for at least 15 minutes with clean wa-
ter. Then wash the affected area with soap.
Have the affected area examined by a medi-
cal professional.
@) Note
Components must not be connected to the
battery terminals and wires on these battery
types because this increases the risk of dam-
age, for example due to overvoltage.

@ For the sake of the environment

“5 J These types of batteries must be dis-
posed of using methods that will not harm
the environment. Do not dispose of them in
household trash. They contain harmful sub-
stances and recyclable raw materials. Contact
an authorized Audi dealer or authorized Audi
Service Facility for more information.
ing the 12 Volt vehicle battery

Fig. 171 Engine compartment: connectors for a charger or
jump start cables
Observe the safety precautions > page 230, Gen-
eral information, > /\ in Battery general infor-
mation on page 240 and > /A\.
Requirement: only use chargers with a maximum
charging current of 14.8 volts. The battery ca-
bles remain connected.
The charging cable connections are located in the
motor compartment. The ground point ©) is al-
ways located on the vehicle body.
>» Switch off the ignition and all electrical equip-
ment.
> Open the hood > page 231.
> Press the release lever on the positive terminal
and fold the cover upward > fig. 171.
> Clamp the charger terminal clamps to the jump
start pins according to the instructions. (Hex
head bolt under a cover (), ground point on the
vehicle body ©).
> 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 charging device terminal clamps.
> Close the cover on the positive terminal.
> Close the hood = page 231.

ZA WARNING
— Never connect a charging cable or jump
start cable directly to the 12 Volt vehicle
battery. Only use the connections in the en-
gine compartment > page 241. >

241

Checking and Filling


— A highly explosive mixture of gases can form
when charging batteries. Only charge the
battery in well-ventilated areas.
— A drained battery can freeze at tempera-
tures around 32 °F (0 °C). Do not charge or
use a frozen or thawed battery. If ice forms,
the battery housing can crack and battery
electrolyte can leak out, which increases the
risk of an explosion and chemical burns.
Contact an authorized Audi dealer or author-
ized Audi Service Facility for more informa-
tion.
— Do not connect or disconnect the charging
cable while charging because this increases

the risk of an explosion.

G) Tips
Read all of the manufacturer's instructions
for the charger before charging the battery.
Windshield washer
system

B8W-0125


Fig. 172 Engine compartment: washer fluid reservoir cap
Observe the safety precautions > page 230, Gen-
eral information.
The windshield washer reservoir © contains the
cleaning solution for the windshield/rear win-
dow* and the headlight washer system*
> fig. 172, > page 232. The reservoir capacity
can be found in > page 300.
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.
242
Messages
gs Please add washer fluid
Fill the washer fluid for the windshield washer
system and the headlight washer system* when
the ignition is switched off.
C) Note
— The concentration of anti-freezing agent
must be adjusted to the vehicle operating
conditions and the climate. A concentration
that is too high can lead to vehicle damage.
— Never add radiator anti-freeze or other addi-
tives to the washer fluid.
— Do not use a glass cleaner that contains
paint solvents, because this could damage
the paint.
Service interval display
The service interval display detects when your ve-
hicle is due for service.
The service interval display works in two stages:
— Inspection or oil change reminder: after driv-
ing a certain distance, a message appears in the
instrument cluster display each time the igni-
tion is switched on or off. The remaining dis-
tance or time is displayed briefly.
— Inspection or oil change due: if your vehicle
has reached an inspection or oil change interval
or both intervals at the same time, the mes-
sage Inspection due! or Oil change due! or Oil
change and inspection due! appears briefly af-
ter switching the ignition on or off.
Checking service intervals
You can check the remaining distance or time un-
til the next oil change or next inspection in the
Infotainment system.
Applies to MMI: Select on the home screen: VE-
HICLE > Settings & Service > Service intervals.
Resetting the indicator
An authorized Audi dealer or authorized Audi
Service Facility will reset the service interval dis-
play after performing service.

8W7012721BB
Wheels

Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs.
(2.3 kg) in excess of those stand-
ard items which they replace, not
previously considered in curb
weight or accessory weight, in-
cluding heavy duty brakes, ride
levelers, roof rack, heavy duty
battery, and special trim.
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the
beads are laid at substantially
90 degrees to the centerline of
the tread.
Recommended inflation
pressure
see > page 247, Cold tire infla-
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Rein-
forced tires may be identified as
“XL”, “xl”, “EXTRA LOAD”, or “RF”
on the sidewall.
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 your
wheel size, you will have to pur-
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire 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 time. The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h) > table
on page 245. You may not find
this information on all tires be-
cause it is not required by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates the >
249