ECU AUDI E-TRON 2021 Repair Manual

4KE012721BF
Media

Media
General information
There may be different media sources and con-
nections available depending on the vehicle
equipment. For example, you can play media files
using a connected USB drive or connect your mo-
bile devices to the Audi music interface and oper-
ate them through the MMI.
Media and format restrictions: the MMI (includ-
ing the USB storage device connection) was test-
ed with a variety of products and media on the
market. However, there may be cases where indi-
vidual devices or media and audio/video files may
not be recognized, may play only with restric-
tions, or may not play at all.
Restricted functionality: reset the MMI to the
factory default settings if functionality is restrict-
ed > page 229.
Digital Rights Management: please note that
the
audio/video files are subject to copyright pro-
tection.
Files that are protected by DRM and are identi-
fied with the symbol f@ will not play.
Data security: never store important data on
CDs/DVDs or mobile devices. Audi is not responsi-
ble for damaged or lost files and media.
Loading times: the more files/folders/playlists
there are on a storage medium, the longer it will
take to load. To reduce the amount of time it
takes the audio/video files to load, use a storage
medium that only contains audio/video files, and
create subfolders (for example, for each artist or
album).
Additional information: when playing, audio
files are automatically displayed with any addi-
tional information that is stored (such as the ar-
tist, track and album cover). If this information is
not available on the medium, the MMI will revert
to the local Gracenote metadata database or
search online if necessary. See > page 223, On-
line additional data. However, in some cases, the
additional information may not be displayed.
CG) Note
Read the information about Audi connect, and
be sure to note the connectivity costs section
=@ in General information on page 186.
DVD drive
General information
Applies to: vehicles with a DVD drive
The functionality of individual storage mediums
may be limited due to the variety of blank CDs/
DVDs available and the various capacities. Audio
CDs or video DVDs with copy protection, CDs/
DVDs that do not conform to the standard, and
multisession CDs may have limited playback or
may not play at all. Audi recommends finalizing
the recording process when creating multisession
CDs. Multisession DVDs are not supported.
() Note
To reduce the risk of damaging the drive and
data carriers:
— Always store data carriers in a protective
sleeve and do not expose them to direct
sunlight
— Do not use damaged, dirty, or laminated da-
ta carriers
— Do not use single CDs/-DVDs with a 3.1 inch
(8 cm) diameter, non-circular CDs/DVDs
(shaped CDs), cleaning CDs, and protective
rings
— Never force CDs/DVDs into the drive. Discs
are pulled in automatically.
@® Tips
The thermal protection switch stops playback
temporarily when outside temperatures are
too high.
215

Media

Applies to: vehicles with a DVD drive

[RAH-9153]


Fig. 145 Glove compartment: DVD drive
Loading a CD/DVD
> Slide the CD/DVD straight into the DVD slot @
with the label facing up. The CD/DVD will be au-
tomatically pulled in.
Ejecting a CD/DVD
> Press the button @).
The CD/DVD is pulled in again automatically if it
is not removed from the DVD slot within approxi-
mately ten seconds after ejecting it.
The DVD drive is accessed and operated through
the MMI > page 218.
G) Tips
— Playback cannot be guaranteed with media
files that have a high data rate.
— Always read the chapter > page 215, Gener-
al information.
Bluetooth audio player
Applies to: vehicles with Bluetooth audio player
With the Bluetooth audio player, you can play
music wirelessly through the MMI from your
Bluetooth-capable mobile device (such as a cell
phone).
Requirement: the vehicle must be stationary and
the ignition must be switched on. The Bluetooth
settings will open on your mobile device during
the connection setup. The Bluetooth function and
visibility of the MMI > page 229 and mobile de-
vice must be switched on.
216
Connecting a mobile device
> Applies to: MMI: Select on the home screen:
MEDIA > Source > Connect external device >
New connection. The available Bluetooth devi-
ces will be displayed after several seconds.
> Press on the desired mobile device in the list of
displayed Bluetooth devices.
> To update the list, press OQ.
A PIN for a secure Bluetooth connection will be
generated.
> Confirm the PIN on your mobile device.
After connecting successfully, the mobile device
will be displayed in the Connected devices menu
as a Bluetooth audio player.
Playing media > page 218.
(i) Tips
— Check for any connection requests on your
Bluetooth device.
— Multiple Bluetooth audio players can be
paired with the MMI, but only one at a time
can be active as a Bluetooth audio player
=> page 230.
— The supported media functions (such as
shuffle, list view, categories, search, op-
tions) depend on the Bluetooth device being
used.
— 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 26.
>» Start Amazon Alexa using the voice recognition
system.

Checking and Filling


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.
® Note
When filling fluids, be sure not to add any flu-
ids to the wrong reservoirs. Otherwise, severe
malfunctions and 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.
Opening and closing the hood

The hood is released from inside the vehicle.



RAZ-0606

Fig. 150 Unlocked hood: lever

D_ The & symbol is not available in all countries.
234
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. 149.
>» Raise the hood slightly > page 233.
> Press the lever > fig. 150 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 strut.
> Let the hood fall lightly into the latch. Do not
press it in. > /\.
Messages
EB warning! Hood is not locked. Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop im-
mediately and close the hood.

ZA\ WARNING
— 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.
— For safety reasons, the hood must always be
latched securely while driving. Because of
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.

4KE012721BF
Emergency assistance

> Inflate the tire to between 29 psi (200 kPA)
and 36 psi (250 kPA) and read the pressure on
the gauge.
> If this tire pressure is not reached, remove the
filler hose. Drive slowly approximately 33 feet
(10 m) forward or in reverse so that the sealant
can be distributed in the tire. Inflate the tire
again > A\.
ZA\ WARNING
— Read and follow the manufacturer's safety
precautions on the compressor and in the in-
structions on the bottle of sealant.
— Ifa tire pressure of 29 psi (200 kPA) cannot
reached after inflating for 6 minutes, then
the tire is too severely damaged. Do not con-
tinue driving.
— If the tire cannot be repaired with the tire
sealant, see an authorized Audi dealer or au-
thorized Audi Service Facility for assistance.
@) Tips
Do not operate the compressor for more than
six minutes continuously, or it can overheat.
Once the compressor has cooled, you can con-
tinue to use it.
CeoT nn tata]
Applies to: vehicles with tire mobility kit


> Affix the sticker that says "max. 50 mph (max.
80 km/h)" that is provided with the tire mobili-
ty kit within the driver's field of vision.
> Stop the vehicle after driving for about 10 mi-
nutes and check the tire pressure.
> If the tire pressure is lower than 19 psi (130
kPA), then the tire is too severely damaged. Do
not continue driving.

Nv WARNING
Pay attention to the following after repairing
the tire:
— Do not drive faster than 50 mph (80 km/h).
— Avoid hard acceleration or braking and driv-
ing fast around curves.
— The vehicle may become more difficult to
control.

— If the tire is too severely damaged, see an
authorized Audi dealer or authorized Audi
Service Facility for assistance.


(@) For the sake of the environment
You can give the used tire sealant bottle to an
authorized Audi dealer or authorized Audi
Service Facility for disposal.
G) Tips
Remember to obtain a new bottle of sealant
from an authorized Audi dealer or authorized
Audi Service Facility after repairing a tire.
Replacing wheels
You must complete the preparation before
changing a tire.
> Read and follow the important safety precau-
tions > page 267.
> Set the parking brake.
> Select the “P” position.
> When towing a trailer: disconnect the trailer
from your vehicle.
> Lay out the vehicle tool kit > page 267 and the
spare tire > page 273.
> Applies to: vehicles with air suspension: Select
on the home screen: VEHICLE > Settings &
Service > Air suspension: wheel change.
> Switch the ignition off.

Z\ WARNING
The vehicle must also be secured to prevent it
from rolling when using the vehicle jack*. Use
suitable objects to block the front and back of
the wheel that is diagonal from the wheel
with the flat tire.

269

Emergency assistance

Removing the caps

B4L-1337

Bp
Fig. 163 Wheel: wheel bolts with caps
> Slide the plastic clip from the vehicle tool kit
onto the cap until it engages > fig. 163.
>» Remove the cap with the plastic clip.
Anti-theft wheel bolts
Applies to: vehicles with anti-theft wheel bolts
°
® al) — 2

B4H-0470


Fig. 164 Anti-theft wheel bolt with cap and adapter
You need a special adapter in the vehicle tool kit
to remove the anti-theft wheel bolts.
> Remove the cap (2).
> Slide the adapter @) all the way onto the anti-
theft wheel bolt @.
>» Slide the wheel wrench* from the vehicle tool
kit all the way onto the adapter @).
> Loosen the wheel bolt > page 270.
G) Tips
Note the code number for the wheel bolt
adapter and store it in a safe place separate
from the vehicle. If you need a replacement
adapter, contact an authorized Audi dealer or

2) You need the matching adapter in order to loosen and
tighten anti-theft wheel bolts* > page 270.
270

authorized Audi Service Facility and give them
the code number.
Loosening the wheel bolts


B4S-0221

Fig. 165 Wheel: loosening the wheel bolts
>» Slide the wheel wrench* from the vehicle tool
kit all the way onto the wheel bolt).
> Turn the wheel bolt approximately one turn to
the left. To achieve the required torque, hold
the end of the wheel wrench*. If the wheel bolt
will not loosen, press carefully on the wheel
wrench* with your foot. Hold onto the vehicle
securely while doing this and make sure your
footing is stable.

ZA WARNING
To reduce the risk of an accident, only loosen
the wheel bolts gently one turn before raising
the vehicle with the vehicle jack*.

Emergency assistance

Removing and installing a wheel
@ Rg tT
“% © oO

B8K-1477



Fig. 169 Wheel: alignment pin in the top hole
Removing a wheel
> Remove the top wheel bolt completely using
the hex socket in the screwdriver handle from
the vehicle tool kit > fig. 168 and place it ona
clean surface.
> Then install the alignment pin from the vehicle
tool kit in the empty wheel bolt hole by hand
> fig. 169.
> Remove the rest of the wheel bolts.
> Remove the wheel >(). The alignment pin re-
mains in the hole while doing this.
Installing a wheel
Read the directions on page 272 when instal-
ling unidirectional tires.
> Slide the wheel on over the alignment pin >@.
> Install the wheel bolts and tighten them gently
using the hex socket.
> Remove the alignment pin and tighten the re-
maining wheel bolt.
> Carefully lower the vehicle using the vehicle
jack*.
> Tighten the wheel bolts in a diagonal pattern
using the wheel wrench*.
272
The wheel bolts must be clean and loosen and
tighten easily. Check the contact surfaces for the
wheel and hub. Contaminants on these surfaces
must be removed before installing the wheel.

Z\ WARNING
— Read and follow the important information
and notes under > page 248.
— Never use the hex socket in the screwdriver
handle to tighten the wheel bolts. Using the
hex socket will not achieve the required
tightening torque, which increases the risk
of an accident.
C) Note
When removing or installing the wheel, the
rim could hit the brake rotor and damage the
rotor. Work carefully and have a second per-
son help you.
Unidirectional tires
A unidirectional tire profile is identified by arrows
on the tire sidewall that point in the running di-
rection. You must always maintain the specified
running direction. This is necessary to ensure the
tire's optimal performance in regard to adhesion,
running noise, and friction, and to reduce the risk
of
hydroplaning.

To benefit fully from the advantages of the uni-
directional tire design, you should replace faulty
tires as soon as possible and restore the correct
running direction on all of the tires.
> Reinstall the caps on the wheel bolts if necessa-
ry.
> Store the vehicle tool kit in its designated
place.
> If the removed wheel does not fit in the spare
wheel well, store it securely in the luggage
compartment © page 79.
> Check the tire pressure on the installed wheel
as soon as possible.
> Correct the tire pressure and store it in the MMI
=> page 260.

4KE012721BF
Emergency assistance

> The wheel bolt tightening specification must be
120 ft lbs (160 Nm). Have it checked as soon as
possible with a torque wrench. Drive carefully
until then.
> Have the faulty wheel replaced as quickly as
possible.
Collapsible spare tire
Applies to: vehicles with collapsible spare tire
The collapsible spare tire is intended for short-
term use only. Have the damaged tire checked
and replaced if necessary by an authorized Audi
dealer or authorized Audi Service Facility as soon
as possible.
There are some restrictions on the use of the col-
lapsible spare tire. The collapsible spare tire has
been designed specifically for your type of vehi-
cle. Do not replace it with the collapsible spare
tire from another type of vehicle.
The collapsible spare tire is located in the lug-
gage compartment under the cargo floor cover.
Requirement: the vehicle tool kit > page 267 and
the compressor must be laid out.
Removing
> Lift the cargo floor using the handle.
> Turn the handwheel counter-clockwise and re-
move it.
> Remove the cover.
> Remove the collapsible spare tire.
You must inflate the collapsible spare tire before-
hand in order to use it.
Inflating
> Remove the valve cap from the collapsible
spare tire.
> Tighten the compressor hose on the collapsible
spare tire valve.
> Connect the compressor hose to a vehicle sock-
et and switch it on.
> Let the compressor run until the specified value
on the tire pressure sticker is reached
page 251, fig. 158>©.
> Screw the valve cap back onto the valve.
Returning to storage
> To release air, turn the valve insert. See an au-
thorized Audi dealer or authorized Audi Service
Facility.
> Turn the valve insert back once the air has been
released.
>» Wait several hours before placing the collapsi-
ble spare tire in the spare wheel well. Only then
will it fold down completely so that you can
store it securely.
> Then screw the valve cap back onto the valve.
> Secure the collapsible spare tire with the cover
and the handwheel.
>» Fold the cargo floor cover back into place.
Snow chains
Using snow chains on the collapsible spare tire is
not permitted for technical reasons.
If you have to drive with snow chains and a rear
tire fails, mount the collapsible spare tire in place
of a front tire. Install the snow chains on the
front tire that you removed, and install that in
place of the rear tire that failed.

Z\ WARNING
— Only use the collapsible spare tire in emer-
gencies and drive very carefully, especially if
it is more than six years old.
— The compressor and the hose can become
very hot during operation which increases
the risk of burn injuries.
— After installing a collapsible spare tire, the
tire pressure must be checked as quickly as
possible to reduce the risk of an accident.
— Do not drive faster than 50 mph (80 km/h)
with the collapsible spare tire. Driving faster
than that increases the risk of an accident.
— To reduce the risk of an accident, avoid hard
acceleration or braking and driving fast
around curves with the collapsible spare
tire.
— Never drive using more than one collapsible
spare tire, because this increases the risk of
an accident.
— Normal tires or winter tires must not be
mounted on the collapsible spare tire rim.

273

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.
G) Tips
The ESC must not be limited or switched off
when driving with the collapsible spare tire
=> page 106.
Jump starting
The vehicle cannot be operated when the 12 Volt
vehicle battery is drained. Your vehicle must not
be jump started in this case. Contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty.
@) Note
The vehicle battery must not be bridged using
conventional jump start methods.
— You may neither give nor receive a jump
start. Otherwise, the electronic systems in
the vehicle may be severely damaged.
— The jump start pins in the motor compart-
ment are designed specifically for qualified
technicians.
Towing
Teele ela)
You should only perform the steps that follow if
you have the necessary tools and technical ex-
pertise.
Towing requires a certain amount of practice.
Audi recommends contacting a towing company
to have the vehicle transported.
You should only have your vehicle towed by an-
other vehicle when disabled in exceptional cir-
cumstances. Inexperienced drivers should not
tow.
Notes on towing
— The maximum permitted towing speed is 30
mph (50 km/h).
274
— The maximum permitted towing distance is 30
miles (50 km).
Additional information on towing with a tow
truck
The vehicle may only be towed with the front axle
raised. Do not wrap any chains or cables around
the brake lines.
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
—Ifthe |e} indicator light turns on, there is a
fault in the cooling circuit. The vehicle must
not be towed. The drive system can be se-
verely damaged.
— 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.

4KE012721BF
Emergency assistance

— When the parking lock is engaged, neither
the front nor rear axle may be lowered or
raised more than 10. The driveshafts or
tires could be seriously damaged.
— Towing must not be used to charge the
high-voltage battery (recuperation), be-
cause this could result in major damages to
the tow vehicle or the vehicle being towed.
— The vehicle must not be tow started for
technical reasons.
G) Tips
— Switch Audi pre sense* off > page 160 when
loading the vehicle onto a vehicle carrier,
train, ship, or other type of transportation,
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 274.
Preparations
> Only secure the towing cable or tow bar at the
designated towing loops > page 275,
=> page 276.
> 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 50. 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 98.
> Select the “N” selector lever position.
>» Switch the ESC off to avoid error messages
=> page 106.
> 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.

t towing loop


Fig. 170 Front bumper: installing the towing loop
The threaded opening for the towing loop is lo-
cated on the right side of the front bumper.
> Remove the towing loop from the vehicle tool
kit > page 267.
> Press the cap inward with brief, strong pressure
=> fig. 170. 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. >
275

Emergency assistance


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.
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.
Rear towing loop



Fig. 171 Rear bumper: installing the towing loop
Vehicles with a towing loop
On vehicles without a factory-installed trailer
hitch*, the towing loop threads are located on
the right rear side of the bumper.
> Remove the towing loop from the vehicle tool
kit > page 267.
>» Press the cap inward with brief, strong pressure
=> fig. 171. 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.
Vehicles with a trailer hitch*
» Attach the tow bar or the towing cable to the
trailer hitch.
Vehicles with a factory-installed trailer hitch* are
not equipped with towing loop threads at the
rear.
276
To reduce the risk of damaging the trailer
hitch*, only use suitable tow bars that are
compatible with it. If a tow bar is not availa-
ble, you can use a towing cable.
Depending on the model, the shape of the cap
can vary.