electrical system AUDI E-TRON 2021 User Guide

High-voltage system

Charging at household and industrial sockets
or at public charging stations with
alternating current (AC)
The vehicle's high-voltage battery can be charged
with alternating current (AC) via the charging
port () on the driver's side. Depending on the ve-
hicle equipment, there may be a second charging
port © on the front passenger's side. Both
charging ports have the same charging power.
You can use whichever charging port is more con-
venient for your charging setup. When using one
charging port, the opposite charging port is
locked.
Quick charging at public direct current (DC)
charging stations
The vehicle’s high-voltage battery can be charged
at a direct current (DC) charging station via the
charging port on the driver's side (S). There is a
significant decrease in charging time. The charg-
ing cable used may be a maximum of 98 feet (30
m).
Charging time
The duration of the charging process may vary
based on the following factors:
— Sockets being used (household or industrial
sockets)
— Country-specific system voltage, current
strength and number of available phases
— Household connection
— The value set for the charging power level on
the Audi charging system control unit
— Fluctuations in the system voltage
— The temperature outside the vehicle
— The temperature of the high-voltage battery
and the Audi charging system control unit.
— Settings for the climate control inside the vehi-
cle
— Current capacity of the charging connector
— Whether the ignition is on or off
Important safety precautions

ing the battery incorrectly (for example by
disregarding general safety precautions, using
unsuitable or damaged sockets and charging
cables, or charging with unsuitable electrical
equipment) and can lead to serious and fatal
injuries.
— Do not charge using sockets/electrical
equipment that is clearly damaged or instal-
led incorrectly.
— Never use charging equipment that is clearly
damaged and/or dirty. Check the charging
equipment for damage before every use.
— Never modify or repair any electrical compo-
nents, especially the high-voltage system.
— Never charge in areas at risk for explosions.
The components in the charging equipment
can trigger sparks, which can cause flamma-
ble or explosive fumes to ignite. To reduce
the risk of explosions, especially in garages,
make sure the Audi e-tron charging system
control unit is at least 19 inches (50 cm)
above the floor when charging.
— Never use the charging equipment with an
extension cord, a cable reel, a power strip,
or an adapter, for example, a travel adapter
or timer.
— Do not touch the contacts on the vehicle
charging port or charging equipment.
— Do not insert any objects in the vehicle
charging port or in the charging equipment.
— Always protect the sockets and connections
from water, moisture and other fluids.
— Never charge with both vehicle charging
ports at the same time.
— Only use the charging equipment provided
by the factory or the charging station cable.



ZA\ WARNING
Short circuiting, electric shock, explosions,
fire, and severe burns can result from charg-

ZA\ WARNING
Applies to: Audi charging systems
Sockets that are installed incorrectly can
cause electric shock or fire when charging the
high-voltage battery using the vehicle charg-
ing connection.
— Read all information and safety precautions
for Audi charging systems before using
them.



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High-voltage system



— Monitor the Audi charging system if it is be-
ing used near children.
— Installation and setup of the household con-
nection for Audi charging systems may only
be performed by a qualified electrician. The
qualified electrician is thereby responsible
for adhering to applicable standards and
regulations.
— Make sure that the household socket is
grounded and shielded from water.
— If Audi charging systems do not function ac-
cording to the specifications in the operat-
ing manual, they must not be used. Contact
an authorized Audi dealer or authorized
Audi Service Facility.
— Audi charging systems are intended for use
in private and semi-private areas (for exam-
ple, private property and company parking
lots). Depending on the country where the
vehicle is operated, charging with a mode 2
charging cable (meaning charging with the
Audi charging system) may be prohibited in
public areas. Contact an authorized Audi
dealer or authorized Audi Service Facility for
more information.
— Operate the Audi charging systems in power
networks that are properly grounded. It can-
not be used with non-grounded power net-
works (such as IT networks).
— When charging the high-voltage battery us-
ing household/industrial sockets, the elec-
trical installation can be used at full capaci-
ty. Audi recommends having a qualified elec-
trician regularly inspect the electrical instal-
lations that are used for charging.
— If possible, disconnect Audi charging sys-
tems from the power network during a
thunderstorm.
— Never submerge the Audi charging systems
or the connectors in water.
— Audi charging systems must only be cleaned
when the control unit is completely discon-
nected from the power supply and from the
vehicle. Use a dry towel to clean.
— Audi charging systems are only intended for
use on Audi vehicles and vehicles within the
Volkswagen Group. Using the devices on

vehicles made by another manufacturer is

not authorized.


() Note
— If the vehicle is not being used for long peri-
ods of time, the high-voltage battery must
be charged after four months at the latest
or the vehicle must be continuously con-
nected to a power source (for 50% charging
target > page 115). Otherwise, the high-
voltage battery could become damaged.
— Make sure that you always use the correct
charging equipment for the country in
which it is being used. Contact an author-
ized Audi dealer or authorized Audi Service
Facility for more information.
— On vehicles with only one charging port,
there is a cover on the opposite side of the
vehicle with no charging components instal-
led underneath it. Do not try to open this
cover.
G@) Tips
— Your vehicle can only be charged at charging
stations that meet the requirements in the
respective country and meet the following
standards, at a minimum:
— GB/T 18487.1 and GB/T 20234 (China)
— IEC 61851 and IEC 62196 (Europe)
— SAE J1772 (North America, Japan)
— You can use your Audi charging system if
there is a household or industrial connec-
tion available at the charging station.
(i) Tips
Applies to: Audi charging systems
— For an uninterrupted charging process, Audi
recommends only charging using sockets
that are connected to a separately protected
circuit.
— Audi recommends using Audi charging sys-
tems in the wall mount clip* during opera-
tion. If this is not possible, always position
Audi charging systems on a secure surface
during the charging process > A.
—To reduce the risk of overheating during op-
eration, do not place Audi charging systems
111
>

High-voltage system

Requirement: the correct power plug must be in-
stalled > page 124.
— Insert the plug into the socket.
— Plug the vehicle charging connector into the ve-
hicle charging port.
— The charging process e will start automatically.
— Once the charging process has completed, un-
lock the vehicle and remove the vehicle charg-
ing connector from the vehicle charging port.
Adjusting the charging power level
The control unit automatically recognizes the
voltage and the available current strength. You
can set whether you would like to charge with full
or reduced charging power. The last setting that
was selected will be saved and used again the
next time the vehicle is charged. If multiple
items are connected to the power circuit, the
charging current may be reduced when charging
Control unit: status and malfunction indicators
at a power outlet. This can help to prevent the
electrical equipment from overheating.
The vehicle has a minimum battery charging ca-
pacity of 880 W. Therefore, if the network volt-
age is less than 200 V, charging using a house-
hold socket will only be possible if the charging
power level is set to 100%. Otherwise, the charg-
ing process will not start.
Before charging, always check if the charging
power setting that was selected last is still suita-
ble.
— To set the charging power level, press and hold
the ® button © ® fig. 87 for at least two sec-
onds.
After the charging power level is set, the status
LEDs Q, {and (will flash green one time. The
selected value (50% or 100%) is displayed on the
left or right side of the ® button.

Indicator lights Meaning Solution


O Green The charger is ready to charge, | Starting the charging process
O O Off but is not charging. => page 112.
O & off
O 0 off
9 Off
O Flashing green _| The vehicle is being charged
QO Off with the ground conductor
E off monitor activated.
0 Off
Off

Flashing green
®O®OVSSC|I®OO0O

ance will be reduced.
C Yellow ed. Possible cause of the mal-
a
& oft is being used in single-phase
mode. The charging perform-
Off
The power cable has overheat- | After the cable cools down, the malfunc-
tion will be automatically cleared. Until it
Off function: a multi-phase socket | cools down, charging performance will be
reduced. If the malfunction continues,
have the power supply/household con-
nection checked by a qualified electrician.

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Emergency call

Emergency call
Overview
Applies to: vehicles with emergency call function
An emergency call is a combination of data trans-
mission and a phone call. The data transmission
from your vehicle forwards important informa-
tion, such as the vehicle and position data, to the
emergency call center.
Depending on the country and the vehicle equip-
ment, the following functions may be available:
With the emergency call, you can call for help in
dangerous situations as quickly as possible. Use
this function when emergency help is needed
=>page 191.
— Audi connect emergency call (TPS emergency
call). This eCall system uses emergency call
centers operated by third party providers.
With online roadside assistance, you can request
assistance if there is a breakdown or a minor acci-
dent > page 192.

ZA\ WARNING
In areas with poor GPS reception or outside
the coverage range of the respective cell
phone service provider, some functions and/or
services may not be available, it may not be
possible to send or receive data, or functional-
ity may be limited.
@) Tips
To see which data can be transmitted, visit
your Audi country or sales region website at
www.audi.com.

Emergency call
Applies to: vehicles with emergency call function
The services are provided through a SIM card in-
stalled in the vehicle. Services are provided as-
suming that the cell phone network required for
the installed SIM card is functioning and availa-
ble for use. The services made availably by Audi
are only available within the mobile phone net-
work coverage area for the mobile phone service
provider selected by Audi.

—The emergency call function cannot be deac-
tivated in the Infotainment system settings.
— The availability of the TPS emergency call is
limited to certain times.
—The costs for call and data connections for
TPS emergency calls is included in the price
of the services.
Applies to: vehicles with emergency call function
A TPS emergency call can be made manually or
automatically > page 191.
Making an emergency call
Applies to: vehicles with emergency call function

Fig. 131 Front headliner: cover for the emergency call but-
ton
Manual emergency call
Requirement: the ignition must be switched on.
> Tap the cover (@) to open it.
> Press and hold the emergency call button until
the LED () blinks. The emergency call will be
made.
> If the emergency call button is pressed by mis-
take, then press it again immediately and hold
it until the LED stays on. The emergency call
will be canceled.
Automatic emergency call
The vehicle electrical system initiates an auto-
matic emergency call under certain circumstan-
ces, for example if an airbag deploys. The LEDin >
191

Emergency call

the emergency call button () will blink. The
emergency call will be made. The emergency call
cannot be canceled.
LED status
— Green - The emergency call function is availa-
ble.
— Red - There is a malfunction in the emergency
call function. Contact an authorized Audi dealer
or authorized Audi Service Facility. Note the
messages about the availability of the emer-
gency function > page 192.
— Off - The emergency call function is not availa-
ble, perhaps because no network is available.
Warnings
If there is a critical system failure in the emer-
gency call systems, the vehicle occupants will re-
ceive the following warning: see > page 192, LED
status
and > page 192, Messages.
@) Tips
If the emergency call is canceled due toa
poor connection, then the system automati-
cally tries to connect again.
Messages
Applies to: vehicles with emergency call function
508 Emergency call function: malfunction! Lim-
ited availability. Please contact Service
If this indicator light turns on and this message
appears, the emergency call function is restrict-
ed. For example, you cannot call the emergency
call center, but data may still be transmitted un-
der certain circumstances. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately to have the malfunction corrected.
BS Emergency call function: malfunction! Func-
tion unavailable. Please contact Service
If this indicator light turns on and this message
appears, you cannot make an emergency call.
Drive to an authorized Audi dealer or authorized

) The availability of the services offered depends on the
country and may change in the future.
192
Audi Service Facility immediately to have the
malfunction corrected.
Online roadside
assistance
Applies to: vehicles with online roadside assistance
An online roadside assistance call )) is a combina-
tion of data transmission and a phone call. The
data transmission from your vehicle forwards im-
portant information to the Audi service center,
such as the vehicle and position data.
Calling online roadside assistance
Applies to: vehicles with online roadside assistance

RAZ-0443


Fig. 132 Front headliner: online roadside assistance but-
ton
Calling online roadside assistance
> Press the button @). The LED in the button
turns red. The online roadside assistance call
will be made.
> If you press the button @) by mistake, then
press it again.
Audi incident assistance
A minor accident may be detected by the vehicle
electrical system. You are able to select between
online roadside assistance and an emergency call
in the MMI.

4KE012721BF
Checking and Filling

Checking and Filling
Motor compartment
(eT e @eleurlsela)
Special care is required if you are working in the
motor compartment
For work in the motor compartment, such as
checking and filling fluids, there is a risk of in-
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The vehicle's motor compartment is
a dangerous area. > /\.
Explanation of warnings (sticker in the motor
compartment):
©
Bs
Ay
Always follow the instructions in the op-
OA erating manual.

Hot motor components!
Rotating parts!

The radiator fan can switch on at any
time!

High voltage! The voltage in the high-
voltage system is high enough to cause
fatal injuries. Touching a damaged high-
voltage component can result in a fatal
electric shock.



— The coolant expansion tank cap is equipped
with a seal that must never be removed un-
der any circumstances > page 236. If the
coolant expansion tank is not sealed, con-
tact an authorized Audi dealer or authorized
Audi Service Facility.
— The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure.
—To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— 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 chemicals to as short
atime as possible.


Z\ WARNING
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Keep children away from the motor com-
partment.
— Never spill operating fluids in the motor
compartment.
— Avoid short circuits in the electrical system.
— Never open the hood when there is steam or
coolant escaping from the motor compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
— The cap on the coolant expansion tank may
only be opened by an authorized Audi dealer

ZA WARNING
The voltage in the high-voltage system is high
enough to cause fatal injuries. Touching a
damaged high-voltage component can result
in a fatal electric shock. The components in
the high-voltage system are marked with a
warning label which warns of the high-volt-
age.
— The voltage level in the high-voltage system
is still dangerous and potentially life-threat-
ening when the ignition is switched off.
— Never perform work on orange high-voltage
cables or on high-voltage components. Only
authorized repair facilities that are certified
may perform work on the high-voltage sys-
tem.


or authorized Audi Service Facility.


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

233

4KE012721BF
Checking and Filling

> Read the brake fluid level on the brake fluid res-
ervoir > page 235, fig. 151. The brake fluid lev-
el must be between the MIN and MAX markings
>A.
The brake fluid level is monitored automatically.
Messages
Ga i @ Brakes: stop vehicle and check brake
fluid level
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

ZA\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an
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.

@) 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 [am] indicator light turns on,
there is a malfunction in the power supply, the
battery, or the vehicle electrical system.
= / 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
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
If this message turns off after a little while, the
vehicle battery has been charged enough by the
high-voltage battery while driving.
If this message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility.

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

237

Checking and Filling


authorized Audi dealer or authorized Audi
Service Facility for assistance.

Battery
eae elec acl)
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\.
Batteries with different technologies are instal-
led in your vehicle:
— 12 volt vehicle battery (for example, for basic
power supply) > page 238, 12 Volt vehicle bat-
tery
— High-voltage battery (for example, for electric
drive system, climate control) > page 108, In-
troduction
Not running the vehicle for long periods of
time
When the vehicle is not used for long periods, the
12 Volt vehicle battery will drain little by little. To
ensure 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 con-
venience functions will be available again when
you establish drive ready mode.
Even when electrical equipment is switched off,
the equipment can still drain the 12 Volt vehicle
battery if the vehicle is not driven for long peri-
ods of time. Deep draining results in a chemical
reaction that destroys the inside of the battery.
To reduce the risk of this, the battery must be
charged monthly by an authorized Audi dealer or
authorized Audi Service Facility > page 239. Con-
tact an authorized Audi dealer or authorized Audi
Service Facility for more information.
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-
238
ized Audi Service Facility before cold weather be-
gins.

ZA WARNING
All work on the battery or electrical system in
your vehicle can result in injuries, chemical
burns, accidents, or burns. Because of this, all
work must be performed only by an author-
ized Audi dealer or authorized Audi Service Fa-
cility.

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 12 Volt vehicle battery
against the cold so that it will not “freeze”
and become damaged. Have the battery
charged by an authorized Audi dealer or au-
thorized Audi Service Facility > page 239,
Charging the 12 Volt vehicle battery.
AAO) CM alate ey pan-18 7
Explanation of warnings:


Always wear eye protection.

Battery acid is highly corrosive. Always
wear protective gloves and eye protection.

Fire, sparks, open flame, and smoking are
forbidden.

A highly explosive mixture of gases can
form when charging batteries.

Always keep children away from battery
acid and the battery.

Always follow the instructions in the oper-
se
@
> @
PE
©

ating manual. >

4KE012721BF
Fuses and bulbs

Fuses and bulbs
Fuses
erate mie

Fig. 172 Right side of the motor compartment: fuse panel
cover @)


Fig. 173 Front passenger footwell: cover and clip Q), left
side of the luggage compartment: cover @)
A fuse that has blown will have metal strips that
have burned through.
The fuses are located on the right side of the mo-
tor compartment (@ in the front passenger foot-
well @), and under the left side of 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 from the vehicle tool
kit > page 267.
> Remove the appropriate cover.
> Remove the colored plastic clip from the fuse
panel, if necessary.
> Remove the clip from the fuse panel in the
front passenger’s footwell @).
> Remove the fuse using the clip.
>» Replace the blown fuse only with a fuse that
has the same amp rating.
> Reinstall the plastic bracket.
> Install the cover.
Fuse color identification








Color Current rating
in amps
Black 1
Gray 2
Purple 3
Pink 4
Light brown 5
Brown 16d)
Red 10
Light blue 15
Yellow 20
White or transparent [25
Light green 30
Teal 35
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.

Qo Note
If a new fuse burns out again shortly after you
have installed it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili-
ty.
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Fuses and bulbs


Fuse panel (2) (black) Fuse panel (4) (brown)

9 |Instrument cluster No. | Equipment

10 | Volume control Right front safety belt tensioner

11 | Light switch, switch panels Left front safety belt tensioner

12 | Steering column electronics Air suspension/suspension control

15 |Steering column adjustment Right headlight

16 | Steering wheel heating Left headlight


Fuse panel 2) (black)
Left rear door control module


No. | Equipment
WOl/@OIN|
A)
M|AILN
Right rear door control module


10 | Infotainment system


























1 |Front seat heating - -
> |Cimateconerl system 11 Exe Sealealite systems control module
3 |Left headlight electronics 12 | Diagnostic interface
4 |Panoramic glass roof Fuse panel (5) (black)
5 |Left front door control module No. | Equipment
6 | Sockets 1 Seat electronics, front seat ventilation,
8 | Instrument panel rearview mirror, diagnostic connection
9 | Right headlight electronics 2 Vehicle electrical system control module,
Windshield washer system/headlight diagnostic interface
10 washer system 3 | Exterior sound generator
12 | Parking lock 5 | Electric drive system
raven 6 | Traffic information antenna (TMC)
Fuse panel (8) (re
ueeiP eed) 7 |Active accelerator pedal
No. | Equi it
o. atipmen 8 | Night vision assist
1 |Anti-theft alarm system - - -
9 |Adaptive cruise assist
2 |Drive system control module , - . -
ll Driver assistance systems, intersection as-
3_| Emergency call module sistant control module
4 | Selector lever 15 |USB input
5 |Horn
6 | Parking brake Fuse assignment - luggage compa
7 High-voltage battery, battery monitoring
control module

8 | Roof electronics control module

10 | Airbag control module

11 | Left front lumbar support

12 | Diagnostic connection, light/rain sensor

14 | Right front door control module

15 | Climate control system compressor


16 | Climate control system blower

5 iF
| | eo ed oO
' rR mae Y= ae
aR EE


Fig. 177 Left side of the luggage compartment: fuse panel
with plastic clip
279
>