battery AUDI A4 2021 Owner´s Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 2021, Model line: A4, Model: AUDI A4 2021Pages: 304, PDF Size: 107.89 MB
Page 178 of 304
Audi connect
Information about the services and the corre-
sponding app was accurate at the time this man-
ual was printed. The scope of services depends
on the country and equipment. There may be
changes over the service life of the vehicle.
ZA WARNING
— Always follow the information found in > AA
in General information on page 173.
— Driver messages, text messages, and illumi-
nated warning and indicator lights in the ve-
hicle always take priority over information
from the Audi connect services. The infor-
mation displayed by the Audi connect serv-
ices should not cause you to take safety
risks. This can result in the vehicle breaking
down in traffic and to serious injuries or ac-
cidents.
G) Tips
— Accessing specific data or controlling func-
tions remotely depends on the charge level
of the vehicle battery. Therefore, these
functions only have limited availability after
switching off the ignition.
— An eSIM card establishes the Internet con-
nection for Audi connect vehicle control
services. The costs for this are included in
the price of Audi connect vehicle control
services. The cell phone network, for exam-
ple, must be available to use these services.
Applies to: vehicles with Audi connect vehicle control
Create a myAudi account by registering in the
myAudi app or at my.audi.com, depending on
your country.
>» Set the key user > page 30.
> Install the myAudi app on your mobile device
and log in with your access information.
@ Tips
Some services require you to enter a 4-digit
PIN that you set up during registration.
176
Settings
Applies to: vehicles with Wi-Fi hotspot
Requirement: the ignition must be switched on.
> Applies to: MMI: Select on the home screen:
SETTINGS > Connection settings > Wi-Fi
Depending on the country and the vehicle equip-
ment, the following functions may be available:
Wi-Fi
When the function is switched on, the MMI's Wi-
Fi hotspot is active and Wi-Fi devices can be con-
nected to the hotspot.
Wi-Fi hotspot settings
The Wi-Fi connection between the MMI and your
Wi-Fi device is encrypted. You can change the fol-
lowing information if needed.
— Access point (SSID): name of the Wi-Fi hot-
spot.
— Password: an initial password was set at the
factory in the MMI. Audi recommends changing
the initial password. Only use secure passwords
that conform to the general guidelines for se-
cure passwords. For more information, refer to
reputable and current sources on password se-
curity.
Allow data connection through Wi-Fi
When the function is switched on, mobile devices
can use the Internet connection through the Wi-
Fi hotspot. A data plan is needed to do this.
ZA\ WARNING
Always follow the information found in > A\
in General information on page 173.
@) Note
Always follow the information found in >@ in
General information on page 173.
Page 204 of 304
Media
— Note the volume setting on your Bluetooth
device. Audi recommends setting your mo-
bile device to the maximum volume when
using it as a Bluetooth audio player.
—Aselection of supported Bluetooth devices
can be found in the database for tested mo-
bile devices at www.audi.com/bluetooth.
Amazon Alexa
Applies to: vehicles with Amazon Alexa Integration
You can play various Amazon Alexa content using
the MMI. The voice recognition system is used to
operate it.
Requirement: Amazon Alexa must be activated
=> page 27.
> Start Amazon Alexa using the voice recognition
system.
» Applies to: MMI: Select on the home screen:
MEDIA > Source > Amazon Alexa.
@) Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
=> page 173.
Multimedia connections
USB adapter cable
[RAH-9202
Fig. 150 Audi Genuine Accessories: USB adapter
You can connect your mobile devices through the
Audi music interface to the MMI using the USB
adapter and charge the battery at the same time.
You can purchase the USB adapter cable from an
authorized Audi dealer or at specialty stores:
202
@ USB adapter for devices with a mi-
cro USB connection
@ USB adapter for Apple devices with
a Lightning connection
@ USB adapter for devices with USB
type C connection
() Note
Handle the USB adapter carefully. Do not al-
low it to be pinched.
@ Tips
Apple devices with a dock connector can only
be charged using a USB adapter designed for
devices with a dock connector. Data cannot be
transmitted.
Audi music interface
Connect your mobile devices to the Audi music in-
terface in order to operate them through the
MMI and charge the batteries.
The Audi music interface USB ports are located in
the center console in the front and in the rear*
and are labeled with the «> symbol. If multiple
USB devices are connected to the USB ports (for
example, a smartphone and a USB flash drive),
all of these devices can be used as the playback
source.
Connecting or charging mobile devices using
a USB adapter
> Connect the matching USB adapter to the Audi
music interface USB port and connect it to the
mobile device, such as a smartphone.
The battery will charge automatically.
Mobile devices connected to the Audi music inter-
face can be started and operated using the MMI
=> page 203.
Disconnecting a mobile device from the Audi
music interface
> Remove the USB adapter cable from the Audi
music interface.
Page 211 of 304
8W1012721BC
Media
Troubleshooting
The information that follows lists some trouble-
shooting options. They depend on the equip-
ment.
Problem Solution
Audi music interface/Bluetooth
audio player: the mobile device is
not supported.
Read the instructions in the chapter > page 202, Multimedia
connections/> page 201, Bluetooth audio player.
Audi music interface: the mobile
device is not recognized as a
source.
For many mobile phones or mobile devices, playback is not possi-
ble when the battery level is too low (less than 5% charge level).
The mobile device will only be recognized as a media source in
the MMI after connecting if the battery charge level is sufficient.
Audi music interface: malfunc-
tions during audio playback
through an iPod touch/iPhone.
The Bluetooth audio player function is switched on. Switch this
function off > page 213 when you are not using the Bluetooth
audio player.
Audi music interface: audio play-
back through the connected mo-
bile device is not possible.
Make sure the USB mode M7P is selected in the settings on your
mobile device.
Bluetooth audio player: interfer-
ence with track display and audio
playback.
Playback interference can occur when using the Bluetooth audio
player if a music player app from a third party provider is open.
Audi recommends using the integrated media player on your
Bluetooth device (such as a smartphone).
209
Page 213 of 304
8W1012721BC
Audi smartphone interface
— The menu language shown in the MMI is
based on the settings in your smartphone.
— Some MMI functions are not available when
there is an active Audi smartphone interface
— Usage of the Audi smartphone interface de-
pends on the availability of services through
third party providers.
— Audi merely provides access to third party
connection.
— You cannot connect any mobile devices via
Bluetooth when an Audi smartphone inter-
services through the MMI and does not as-
sume any responsibility for the content of
these services.
face connection is active.
Troubleshooting
Applies to: vehicles with Audi smartphone interface
The information that follows lists some trouble-
shooting options. They depend on the equip-
ment.
Problem Solution
Audi smartphone
interface cannot be
opened.
Check the battery charge level on your smartphone.
Check the USB cable and use a different one if necessary.
Check if Android Auto or Apple CarPlay is available in the country where the vehi-
cle is being operated.
Android Auto: check if the Android Auto app is installed on your smartphone.
Connecting the
smartphone to the
MMI failed.
Make sure that you are using the correct USB adapter and check if the USB
adapter is connected correctly to your smartphone and the Audi music interface
=> page 202.
Apple CarPlay: check if Apple CarPlay is activated on your iPhone.
Android Auto: check in the Android Auto app if Android Auto permits new
vehicles.
Wireless connection: open the settings for Bluetooth and Apple CarPlay on your
iPhone. Remove your vehicle. Open the connection manager in the MMI
= page 214. Delete your iPhone in the Telephone 1 and Audi smartphone inter-
face submenus. Repeat the connection process. Restart the MMI > page 19. Re-
start your iPhone.
The smartphone is
not automatically
detected.
Make sure that you are using the correct USB adapter and check if the USB
adapter is connected correctly to your smartphone and the Audi music interface
=> page 202.
Check if the requirements needed to connect a smartphone have been met.
211
Page 216 of 304
Additional settings
> Press on the notification, or
> Open the notification in the notification center
on > page 22 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.
Z\ 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 173.
@ 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.
214
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 210.
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 173.
Managing connected devices
Requirement: the connected devices menu must
be displayed > page 214.
Connecting a device
Requirement: Bluetooth visibility must be acti-
vated in the MMI & page 213 and mobile device.
> Press on a menu item, such as Telephone 1.
> To search for and connect your mobile device,
press New connection > page 162.
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. >
Page 224 of 304
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.
Z\ 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.
O 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.
D_ The & symbol is not available in all countries.
222
Opening and closing the hood
The hood is released from inside the vehicle.
Fig. 158 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 >) below
the instrument panel in the direction of the ar-
row > fig. 157.
>» Raise the hood slightly > page 221.
> Press the lever > fig. 158 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 itin. > AX.
Messages
B Warning! Hood is not locked. Stop vehicle
and check the lock
Page 225 of 304
8W1012721BC
Checking and Filling
The hood latch is not locked correctly. Stop im-
mediately and close the hood.
K WARNING
— Never open the hood when there is steam or
coolant escaping from the engine compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
— For safety reasons, the hood must always be
latched securely while driving. Because of
NY [1
this, always check the hood after closing it
to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ed.
— If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.
Fig. 159 Typical location of the reservoir and the engine oil filler opening (example)
Observe the safety precautions > page 221.
@ Washer fluid reservoir (>) > page 233
) Jump start points: (+) under the cover
= page 232, Charging the 12 Volt vehicle
battery > page 268, Preparation
Engine oil filler opening (%27) > page 225
Sticker* for engine oil specifications
=> page 224
) Coolant expansion tank (-£) > page 228
Brake fluid reservoir (OC) > page 229
The coolant expansion tank and the engine oil
filling opening may be located in different places
within
the engine compartment, depending on
the engine version.
223
Page 232 of 304
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.
z= 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 = / B or = indicator light turns on,
there is a malfunction in the power supply, the
battery, or the vehicle electrical system.
mz / 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
230
ZA\ 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
ela lame (Tem eeecela)
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 231, 12
Volt vehicle battery or > page 232, Other bat-
tery types
— Auxiliary battery (for example, for recuperation
or optional equipment) > page 232, 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 >
Page 233 of 304
8W1012721BC
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 232. 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 232, 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.
ZA 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 232.
ZA 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
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-
(QO | 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.
231
Page 234 of 304
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.
ZA\ 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
“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.
232
rging the 12 Volt vehicle battery
Fig. 163 Engine compartment: connectors for a charger or
jump start cables
Observe the safety precautions > page 221, Gen-
eral information, > /\ in Battery general infor-
mation on page 231 and > /\.
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 222.
> Press the release lever on the positive terminal
and fold the cover upward > fig. 163.
> 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 222.
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 232. >