page 34 AUDI A4 2021 Owner´s Manual

Emergency assistance

@) Note
The compressor must be switched off after six
minutes at the most to reduce the risk of
overheating. Let the compressor cool down
for several minutes before using it again.
Jump starting
You should only perform the steps that follow if
you have the necessary tools and technical ex-
pertise.
If the engine does not start because the vehicle
battery is drained, you can jump start your vehi-
cle using another vehicle. Jump start cables are
needed to do this.
Both vehicle batteries must have 12 V nominal
voltage. The voltage capacity (Ah) of the vehicle
battery that is giving power must not be less
than the capacity of the drained vehicle battery.
Jump start cable
Only use a jump start cable with a large enough
diameter. Note the manufacturer's specifica-
tions.
Only use a jump start cable with insulated termi-
nal clamps.
Positive cable - usually red.
Negative cable - usually black.

ZA\ WARNING
— A drained battery can freeze at tempera-
tures around 32 °F (0 °C). If the vehicle bat-
tery is frozen, it must be thawed before con-
necting the jump start cables. If it is not,
the risk of an explosion and chemical burns
increases. After jump starting the vehicle,
drive to an authorized Audi dealer or author-
ized Audi Service Facility immediately to
have the vehicle battery checked.
— Read the warnings when working in the en-
gine compartment > page 221.
— Handling the jump start cables incorrectly
may cause the vehicle battery to explode
and lead to serious injuries.

268
@) Note
Jump start cables can cause considerable
damage to the vehicle electrical system if
they are connected incorrectly.
@) Tips
— There must be no contact between the
vehicles, or else voltage could flow when
connecting the positive terminal and drain
the vehicle battery of the vehicle providing
the jump start.
— The drained vehicle battery must be con-
nected correctly to the electrical system.
— Switch off electrical equipment that is not
needed.

Both jump start cables must be connected in the
correct order.

Fig. 179 Engine compartment: connectors for jump start
cables or a charger



Fig. 180 Engine compartment: connectors for jump start
cables or a charger
The jump start cable connections are located in
the engine compartment.
Follow the information about the vehicle battery
=> page 230. >

Emergency assistance

Tow bar and towing cable
The vehicle can be towed with a tow bar or tow-
ing cable. Both drivers should be familiar with
the special considerations when towing, especial-
ly when using a towing cable.
Always make sure the traction force does not ex-
ceed the permitted level and there are no shock
loading conditions. There is always the risk of the
coupling becoming overloaded when driving off-
road.
For the most safety and security, drive with a tow
bar. You should use a towing cable only if a tow
bar is not available. Use a towing cable made of
synthetic elastic cable similar elastic material.

ZA\ WARNING
— Towing highly increases the risk of an acci-
dent, for example from colliding with the
towing vehicle.
— To reduce the risk of an accident, do not al-
low anyone to remain inside the vehicle
when it is being transported by a tow truck
or a special transporter.

@) Note
— If normal towing is not possible, for exam-
ple if the transmission is faulty or if the
towing distance is greater than 30 miles
(50 km), then transport the vehicle on a
special carrier.
— If the vehicle is towed by a tow truck at the
axle that is not permitted, this can cause se-
vere damage to the transmission.
— The vehicle must not be tow started for
technical reasons.
G) Tips
— If the power supply is interrupted, then it
will not be possible to move the selector
lever out of the "P" position. The parking
lock must be released using the emergency
release before towing the vehicle
=> page 100.
— Switch Audi pre sense* off > page 146 when
loading the vehicle onto a vehicle carrier,
train, ship,
or other type of transportation,
270
or when towing the vehicle. This can prevent
an undesired intervention from the pre
sense* system.
— Follow the local legal regulations for tow-
ing.
Read and follow the important information under
=> page 269.
Preparations
> Only secure the towing cable or tow bar at the
designated towing loop > page 271.
> Make sure the towing cable is not twisted. Oth-
erwise it could disconnect from the towing loop
while towing.
> Switch the emergency flashers on in both
vehicles > page 53. However, do not do this if it
prohibited by law.
Towing vehicle (front)
> Only start to drive when the towing cable is
taut.
> Press the brake pedal very carefully.
> Avoid sudden braking or driving maneuvers.
Vehicle being towed (rear)
» Make sure the ignition is switched on so that
the steering wheel is not locked and so that you
can use the turn signals, the horn, and the
windshield wipers if needed > A\.
> Switching it off before the vehicle has stopped
may impair the function of the brake booster
and power steering. You would then need to
use more force to steer and brake the vehicle.
> Release the parking brake > page 106.
> Select the “N” selector lever position.
> Make sure the towing cable is always taut.

ZA\ WARNING
— Never tow a vehicle using a tow bar or tow-
ing cable if the vehicle does not have electri-
cal power.
— If the vehicle runs out of power while it is
being towed, stop towing the vehicle imme-
diately and consult an authorized Audi deal-

er or qualified repair facility.

8W1012721BC
Emergency assistance

Rear towing loop


Fig. 181 Rear bumper: installing the towing loop
The threaded opening for the towing loop is lo-
cated on the right rear of the bumper.
> Remove the towing loop from the vehicle tool
kit > page 261.
> Press the cap inward with brief, strong pressure
> fig. 181. The cap will loosen from the bump-
er.
> Tighten the towing eye as far as it will go into
the mount. Use a suitable object to tighten the
towing eye completely and securely in the
mount.
>» After using, place the towing loop back in the
vehicle tool kit.


If the towing loop is not tightened until it
stops when installing, the threads may be
pulled out when towing the vehicle and result
in an accident.


Depending on the model, the shape of the cap
can vary.
271

Fuses and bulbs

Fig. 182 Driver's side footwell (left-hand drive vehicles):
footrest (@), front passenger's footwell (right-hand drive
vehicles): cover

Zag
BBW-0257
Fig. 183 Driver's side cockpit (left-hand drive/right-hand
drive vehicles): cover ©, left side of luggage compartment:
cover ()
272

A fuse that has blown will have metal strips that
have burned through.
The fuses are located in the footwell under the
r behind foot rest (left-hand drive vehicle) @
the cover (right-hand drive vehicle)
fuses are located on the front side of the cockpit
(driver's side) © and under the left cover in the
luggage compartment (

> Switch the ignition and all electrical equipment
off.
> Check the table that follows to see which fuse
belongs to the equipment.
» Remove the screwdriver and the reversible Torx
bit from the vehicle tool kit > page 261.
> Remove the footrest or the corresponding cov-
er.
> Remove the colored plastic clip from the fuse
panel, if necessary > page 273, fig. 184.
> Remove the clip from the rear side of the cover
(©):
> Remove the fuse using the clip.
> Replace the blown fuse only with a fuse that
has the same amp rating.
> Reinstall the plastic bracket.
>» Reattach the footrest or the cover.
Fuse color identification








Color Current rating
in amps
Black 1
Purple 3
Light brown 5
Brown 7.5
Red 10
Blue 15
Yellow 20
White or transparent [25
Green 30
Orange 40
Z\ WARNING
Do not repair fuses and never replace a blown
fuse with one that has a higher amp rating.
This can cause damage to the electrical sys-
tem and increases the risk of fire.

Fuses and bulbs


2 | Audi phone box

Right front seat electronics, lumbar sup-
port, massaging seat
4 |Side assist


6 |Tire pressure monitoring system

Convenience access and start authoriza-
tion control module

8 | Auxiliary heating, tank module

TV tuner, data exchange and telematics
10 control module

11 | Auxiliary battery control module

12 | Garage door opener

13 | Rearview camera, peripheral cameras
14 | Right tail lights
16 | Airbag control module



No. | Equipment

Exhaust treatment
Right trailer hitch light
Trailer hitch
Left trailer hitch light
Trailer hitch socket


WO)
O};N]/
Mm|
Ww

All wheel drive control module, sport dif-
10
ferential


11 | Exhaust treatment

Bulbs
Replacing bulbs
Audi recommends having a bulb replaced by an
authorized Audi dealer or authorized Audi Service
Facility in cases of doubt. These facilities have
the correct tools and replacement parts as well
as the required technical knowledge.
LED lights*
Your vehicle is equipped with maintenance-free
headlights and tail lights. However, if a light bulb
needs to be replaced, please contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty.
276

If you still would like to try replacing the
bulbs in your vehicle yourself, read the warn-
ings regarding working in the engine compart-
ment > A\ in General information on
page 221.

Make sure the covers are fitted correctly on
the headlight and tail light so that no water
will leak in from the outside and the light
function will not be impaired.

8W1012721BC
Data privacy

You can also deactivate individual services for
your vehicle at my.audi.com if you are logged into
the vehicle as the key user > page 30. These de-
activated services will not be available in the ve-
hicle. For additional information, visit my.audi.
com.)
@) Note
You are responsible for all precautions taken
for data protection, anti-virus protection, and
protection against loss of data on mobile de-
vices that are used to access the Internet
through the Wi-Fi hotspot.
@ Tips
— The following interfaces are not affected by
changes to the privacy settings: Bluetooth,
Bluetooth Low Energy (BLE), Wi-Fi, Audi
smartphone interface (ASI), Near Field
Communication (NFC), charging communi-
cation (high-voltage system), Electronic Toll
Collect (ETC), On-Board Diagnostic System
(OBD) if equipped.
— If the maximum privacy settings are switch-
ed on, your vehicle may not receive security
updates and certificates for establishing an
encrypted connection, depending on vehicle
equipment. In order to receive security up-
dates and certificates, switch the maximum
privacy settings off for at least ten minutes
every six months. Make sure that your vehi-
cle is connected to the Internet. A symbol in
the MMI status bar indicates if the required
data connection is available > page 22.
— If the transmission of data is limited, it will
have the following effects on the exchange
of data for Audi connect services and emer-
gency calls, if equipped:
— The emergency call function will remain
available without restrictions and will con-
tinue to transmit data.
— If an online roadside assistance call is ini-
tiated, no data will be transmitted, but a
call will be made.
— If the Geofencing Alert, Speed Alert,
and/or Valet Alert services have been acti-

D In certain countries
vated by the key user, then they will re-
main available without restrictions and
continue to transmit data.
— Stored destinations (favorites, last desti-
nations) are only stored in the vehicle. If
you allow transmission of data again,
these destinations will be synchronized via
the myAudi account. To prevent synchroni-
zation of destinations, delete the destina-
tions before you allow data to be trans-
mitted again.
Applies to: vehicles with Audi connect Infotainment
Audi collects, uses, stores and shares your per-
sonal information, such as contact data, vehicle
data, usage data, driving data and precise geolo-
cation, in order to provide you with the products
and services you have purchased or requested,
and for a number of other purposes, for example,
to track quality issues, to performance and safe-
ty, to meet our internal compliance or legal re-
quirements and to market to customers and po-
tential customers. For a more complete list of
the data we collect, how we use it and with
whom we share it, please visit your Audi nation-
al/sales region website at www.audi.com.
The collection, use and sharing may vary depend-
ing on your model and model year, your subscrip-
tion status, or the service offering. For example,
collection, use and sharing may vary between
Audi connect services, if you have designated a
key user, or if you are driving a model equipped
with persistent data logging. Please review the
complete Privacy Statement to understand our
data handling practices with respect to a particu-
lar service.
You can find additional information about our da-
ta privacy practices in your MMI.
> Applies to: MMI: On the home screen, select:
SETTINGS > General > Legal notes > About
Audi connect.
Information about our privacy practices in con-
junction with the mobile Audi connect
279

8W1012721BC
Accessories and technical changes

Accessories and
technical changes
Warranty
Your vehicle is covered by various warranties:
— New Vehicle Limited Warranty
— Limited Warranty Against Corrosion Perforation
— Emissions Control System Warranties: Federal
Emissions Control System Defect Warranty,
Federal Emissions Performance Warranty
— Applies to: USA models: Kansas Safety Belt
Limited Warranty
— Applies to: USA models: California Emissions
Control Warranties: Short-term Emissions De-
fects Warranty, Long-term Emissions Defects
Warranty, TZEV models Emissions Defects
Warranty, California Emissions Performance
Warranty
You can find detailed information in your Warran-
ty & Maintenance Booklet and in the California
Emissions Booklet*.
Audi Literature Shop
Service information is made available as soon as
possible after a model is introduced and can be
ordered in the Audi Literature Shop: http://
literature.audiusa.com
Driving in other
countries
Government regulations in the United States and
Canada require motor vehicles to comply with
emissions regulations and safety standards.
Therefore, vehicles that were produced for the
U.S. and Canadian markets are different from
vehicles produced for other countries.
If you plan to use your vehicle outside of the
United States or Canada, it is possible that:
— Fuel may have a significantly lower octane rat-
ing. Unsuitable fuels can cause engine damage.
— Proper maintenance and repair work may not
be possible because special service equipment,
tools, or measuring devices needed for your ve-
hicle may not be available.
— Replacement parts may not always be availa-
ble.
— Navigation systems for vehicles built for the
U.S.A. and Canada will not necessarily work in
Europe, and may not work in other countries.
() Note
Audi is not liable for damage to the vehicle re-
sulting from these country-specific differen-
ces.
Maintenance, repairs,
and technical modifi-
cations
Observe the safety precautions > page 221, Gen-
eral information and > page 264, Raising the ve-
hicle.
General information
Due to the increasing complexity of technology in
these vehicles, as well as the safety and environ-
mental standards that apply, you can only per-
form a very limited amount of repairs and modifi-
cations to the vehicle yourself.
Proof of maintenance work may be required to
submit a claim within the warranty period.
We recommend that you have your vehicle serv-
iced by an authorized Audi dealer or authorized
Audi Service Facility and that Audi Genuine Parts
and Audi Genuine Accessories are used. This
helps to ensure that your vehicle's functionality,
performance, and safety are not impaired.
Maintenance and repairs
Your vehicle was designed to help keep mainte-
nance requirements to a minimum. Some regular
maintenance is required to help ensure that your
vehicle runs in a safe, economical, and reliable
manner. Please refer to your Warranty & Mainte-
nance Booklet for more detailed information
about vehicle maintenance.
When operating the vehicle under more extreme
operating conditions, for example when outside
temperatures are very low or in very dusty envi-
ronments, certain maintenance should be per-
formed between the specified intervals.
281