2020 AUDI A3 ECU

Warm and cold
& Flammable refrigerant

Make sure all components are dis-
posed of correctly and never install
q components in the vehicle that have
been removed from old vehicles or
taken from recycling.

Lubricant in the A/C system
The exact specification and amount of lubricant
in the A/C system can be obtained from an au-
thorized Audi dealer or authorized Audi Service
Facility or at https://erwin.audiusa.com/erwin.

To ensure secure and safe operation, the A/C
system must only be serviced by qualified
technicians.

— Never repair the A/C system evaporator with
components from old vehicles or from recy-
cling.
— New replacement evaporators for portable
A/C systems must be certified and labeled
as such, so that they comply with the SAE
standard J2842 HFO-1234yf and R744.
70

Driving

> Select the “P” selector lever position to secure
the vehicle from rolling away.
> Turn the steering wheel when parking on in-
clines so that the wheels will roll into the curb
if the vehicle starts moving.
> Switch off the ignition before leaving the vehi-
cle.
On hills, activate the parking brake first and then
shift into the "P" selector lever position. This pre-
vents too much stress from being placed on the
locking mechanism.

ZA WARNING
— Always set the parking brake when leaving
your vehicle, even if for a short period of
time. If the parking brake is not set, the ve-
hicle could roll away, increasing the risk of
an accident.
— Do not leave your vehicle unattended while
the engine is running, because this increases
the risk of an accident.
— If the parking brake is set, it can release au-
tomatically when the accelerator pedal is
pressed. To reduce the risk of an accident,
do not inadvertently press the accelerator
pedal and always shift into “P” when the ve-
hicle is stopped.
— If you leave the vehicle, switch the ignition
off and take the key with you. This is espe-
cially important when leaving persons or an-
imals in the vehicle. Otherwise, the vehicle
could start unintentionally, the parking
brake could release, or electronic equipment
could activate, which increases the risk of an
accident.
— No persons or animals should be left in a
locked vehicle. Locked doors make it more
difficult for emergency workers to enter the
vehicle, which puts lives at risk.
— If you do not begin driving immediately af-
ter releasing the brake pedal, your vehicle
may begin to roll backward. Press the brake
pedal or set the parking brake immediately.

@) Note
If you have to stop on an incline, always press
the brake pedal to hold the vehicle in place to
74
reduce the risk of the vehicle rolling back-
ward. Do not try to hold the vehicle in place
by pressing and holding the accelerator pedal.
The transmission can overheat, which increas-
es the risk of damage.
Hill hold assist
If you take your foot off of the brake pedal when
driving on hills, the braking force will be held for
several seconds. At that time, you can start driv-
ing without the vehicle rolling backward.
Requirement: the driver's door must be closed,
the engine must be on, and the vehicle must be
traveling uphill.
> To activate hill hold assist, press and hold the
brake pedal for several seconds while the vehi-
cle is stationary.

Z\ WARNING
— If you do not begin driving immediately af-
ter releasing the brake pedal, your vehicle
may begin to roll backward. Press the brake
pedal
or set the parking brake immediately.
— The hill hold assist cannot hold the vehicle
on inclines in every scenario (for example,
on slippery or icy ground).
Messages
Bw Hill hold assist: unavailable

The hill hold assist is temporarily unavailable.
Press the brake pedal to secure the vehicle from
rolling away unintentionally.
Manual control!
The vehicle cannot be held in place automatically.
Press the brake pedal to secure the vehicle from
rolling away unintentionally.

8V2012721BK
Driving

Gears and driving programs

RAZ-0405



HEeEes
D/S .
a
Fig. 86 Center console: selector lever


The automatic transmission shifts automatically
depending on the selected gear and the current
driving style. When driving with a moderate driv-
ing style, upshifting early and downshifting late
will help to improve fuel economy. When driving
with a sporty driving style, the transmission per-
mits higher RPMs.
The gears are displayed next to the selector lever.
— P (Park): parking lock
—R (Reverse): driving in reverse
—N (Neutral)
— D (Drive): driving forward
Selecting a gear
Requirement: the ignition must be switched on.
— Bring the vehicle to a full stop and press the
brake pedal.
— Press the release button (@) on the selector lev-
er.
—To select a gear, move the selector lever into
the corresponding position.
— The label next to the selector lever for the se-
lected gear will light up.
“N” (Neutral) gear
In the “N” gear, power is not transmitted to the
driving wheels. Use the “N” gear in a car wash
(with conveyor belts), for example.
If you unintentionally select “N” while driving
(faster than 1 mph (2 km/h)), you can also shift
back to “D” without pressing the brake pedal.
For safety reasons, the vehicle cannot be locked
when the transmission is in the "N” gear.
“Pp” (Park) gear
The vehicle is secured from rolling away by the
parking lock when in the “P” gear.
If you cannot shift out of “P”, for example be-
cause the vehicle has no power, you may need to
use the emergency release for the parking lock
=> page 88.
Selecting a driving program
Various driving programs can be selected when in
the “D” gear. The programs influence when the
transmission shifts and how the accelerator ped-
al responds.
The selected driving program is displayed in the
instrument cluster.
—D (Drive): normal driving mode
—S (Sport): sporty driving mode
If you select the Dynamic mode in Audi drive se-
lect*, the “S” driving program will be activated.
When the ignition is switched off, the driving pro-
gram may be reset to “D”.
To switch between the current driving program
and “S”, push the selector lever toward the rear.
Plug-in hybrid drive: if you press the while in “S”, the “D” driving program will be se-
lected.

Z\ WARNING
— Before starting to drive, check if the desired
gear is displayed next to the selector lever.
— Always secure your vehicle from rolling
away. Press the brake pedal or shift to “P”.
When leaving the vehicle, also set the park-
ing brake.
— Power is still transmitted to the wheels
when the engine is running at idle. To pre-
vent the vehicle from “creeping”, you must
keep your foot on the brake in all selector
lever positions (except "P" and "N") when
the engine is running.
—To reduce the risk of an accident, do not
press the accelerator pedal when changing
gears if the vehicle is stationary and the en-
gine is running.

75

8V2012721BK
Driving

the high-voltage battery and the temperature of
the drive system components, among other
things.

ZA WARNING
The driving wheels could spin and the vehicle
could swerve on slick or slippery road surfaces
when using kick-down, which increases the
risk of an accident.

ET een ace)
Applies to: vehicles with S tronic transmission and Launch
Control
Launch Control provides the best possible accel-
eration when starting from a stop.
Requirements
— The engine must be at operating temperature.
— The steering wheel must not be turned.
— Start/Stop system* must be deactivated
=> page 85.
— ESC must be limited > page 94.
— Driving program “S” > page 75 or the dynamic
Audi drive select* mode must be selected
=> page 91.
Using Launch Control
— Press the brake pedal with your left foot and
hold it all the way down for at least one second.
— With the brake pedal pressed, press the accel-
erator pedal all the way down with your right
foot at the same time.
— Once the engine reaches a constant speed, re-
move your foot from the brake pedal.
Once the vehicle has started moving, reactivate
the ESC so that it is fully functional.

Z\ WARNING
Only use Launch Control when road and traffic
conditions allow it and other road users will
not be endangered or impacted by your driv-
ing and the vehicle's acceleration. The driving
wheels could spin and the vehicle could
swerve, especially on slick or slippery road
surfaces, which increases the risk of an acci-
dent.


CG) Note
When accelerating using Launch Control, all
vehicle components are subject to heavy
loads. This can result in increased wear.
G@) Tips
After accelerating using the Launch Control,
the temperature of some vehicle components
may increase greatly. If that happens, the
function will not be available for a few mi-
nutes to reduce the risk of damage. After a
cool-down period, Launch Control will be
available again.
Messages
& Transmission: malfunction! Safely stop vehi-
cle
Do not continue driving. Stop the vehicle as soon
as possible in a safe location and secure it so it
does not roll. See an authorized Audi dealer or
authorized Audi Service Facility for assistance.
& Transmission: too hot. Please stop vehicle
Do not continue driving. Select "P" and contact an
authorized Audi dealer or authorized Audi Service
Facility for assistance.
fal Transmission: too hot. Please adapt driving
style
The transmission temperature has increased sig-
nificantly. Drive very cautiously or take a break
from driving until the temperature returns to the
normal range and the indicator light turns off.
[Gj Transmission: malfunction! You can contin-
ue driving. See owner's manual
There is a system malfunction in the transmis-
sion. You may continue driving. Drive to an au-
thorized Audi dealer or authorized Audi Service
Facility soon to have the malfunction corrected.
[8] Transmission: malfunction! You can contin-
ue driving with limited function. Please contact
Service
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. This mode only shifts into certain gears or >
77

Driving

may no longer shift at all. The engine may stall.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
fs} Transmission: malfunction! You can contin-
ue driving with limited function. No reverse
gear
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. This mode only shifts into certain gears or
may no longer shift at all. The engine may stall.
You cannot engage the reverse gear. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
i Transmission: malfunction! You can contin-
ue driving in D until engine is off
There is a system malfunction in the transmis-
sion. The transmission is switching to emergency
mode. If you turn the engine off, you will not be
able to select any other gears after restarting the
engine. Drive to an authorized Audi dealer or au-
thorized Audi Service Facility immediately to have
the malfunction corrected.
fs} Danger of rolling away! P not possible.
Please apply parking brake
— The parking lock was released using the emer-
gency
release > page 88. Or
— The parking lock can no longer be engaged.
Drive to an authorized Audi dealer or author-
ized Audi Service Facility immediately to have
the malfunction corrected.
Drive system
A new vehicle must be broken in within the first
1,000 miles (1,500 km) so that all moving parts
work smoothly together, which helps to increase
the service life of the engine and other drive com-
ponents.
Do not drive higher than two-thirds of the maxi-
mum permitted engine RPM during the first 600
miles (1,000 km) and do not use full accelera-
78
tion. The engine can be increased RPM gradually
during the next 300 miles (S500 km).
Conventional drive system
Applies to: vehicles with conventional drive system
Vehicles with a conventional drive system are
powered by a combustion engine. It uses fuel to
recover energy.
ate RMN elec: me Lah)
Applies to: vehicles with plug-in hybrid drive
With plug-in hybrid drive, you can select between
the electric and combustion engine drive systems
or combine them > page 79, > page 76.
Coasting
Applies to: vehicles with coasting function
Similar to vehicles with a conventional drive sys-
tem, plug-in hybrid drive vehicles can also disen-
gage the combustion engine to save fuel. The ve-
hicle rolls without an engine braking effect in this
mode, which is “similar to coasting”. However,
the electric portion of the drive system remains
engaged and recuperates if necessary. You can
activate the coasting function in the “D” driving
program up to approximately 112 mph
(180 km/h). This occurs automatically when you
take your foot off the accelerator pedal.
Applies to: vehicles with plug-in hybrid drive
The vehicle is able to recover energy by using “re-
cuperation”. The electric drive system operates
like a generator and converts a large portion of
kinetic energy into electrical energy that is stored
in the high-voltage battery. The vehicle is braked
during recuperation, which is similar to the en-
gine braking effect on a vehicle with a combus-
tion engine. This will happen automatically when
you press the brake pedal while driving in “D”
gear, or when you remove your foot from the ac-
celerator pedal.
The energy recovery is displayed in the energy
flow display > page 80. The recuperation

8V2012721BK
Driving



Component Color Meaning
Motion arrow Green Electric driving
Orange Driving with the gasoline engine

Green-orange Driving with the gasoline engine and electric mo-
tor (boost)

Green

@®) Motion arrow

Recuperation

a) Not available in all Infotainment systems.
Applies to: vehicles with plug-in hybrid drive
RAX-0108, Range potenti
+3 miles (1)
net)
eis)
te ace aera etre)
Bt 15 mites —@)) =
Fig. 91 Range monitor

You can display the projected range of the vehi-
cle.

> Select in the Infotainment system: [MENU] but-
ton > Vehicle > left control button > Range &
statistics > Range.
@ Range potential (value)
@ Range potential (graphic)
@®) Total range (graphic)
@ Total range (value)
Range potential: the value indicates an addition-
al amount of distance that can be gained by turn-
ing off certain convenience functions. The con-
venience functions with high energy usage are
listed on the display.
@) Tips
— The range can also be displayed in the in-
strument cluster in the on-board computer.
— The values given are based on the latest
consumption values.
— The range that is indicated is based on the
previous and predicted consumption values.
For example, these can be affected if con-
venience functions are turned on.
Statistics
Applies to: vehicles with plug-in hybrid drive
You can display statistics about the trips traveled
using electric power and those using fuel. The
values are taken from the short-term memory
and long-term memory of the on-board comput-
er.

> Select in the Infotainment system: [MENU] but-
ton > Vehicle > left control button > Range &
statistics > e-tron statistics.
Vehicle sound
Applies to: vehicles with plug-in hybrid drive

The electric drive system generates considerably
less noise than a combustion engine. An artificial
engine sound is generated when driving electri-
cally so that the vehicle can be heard from the
outside when driving. The vehicle sound auto-
matically fades out at higher speeds when the
sounds from the tires and wind start increasing.

ZA WARNING
Other road users may not be able to defini-
tively hear electric vehicles when they are
driving. This increases the risk of an accident
particularly when driving in areas with little
traffic, when maneuvering, or when driving in
reverse.
aie e- Riedie liereliea lt)
driving
Your driving style greatly influences the amount
of fuel and energy consumed, the environmental
impact, and the wear on the engine, brakes, and
tires. Note the following information for efficient
and environmentally-conscious driving: >

81

Driving

— Turn off electrical equipment that is not need-
ed, for example seat heating*.
— Anticipate upcoming traffic situations while
driving to avoid unnecessary acceleration and
braking.
— Avoid driving at high speeds.
— Avoid adding extra weight to the vehicle if pos-
sible, for example by not leaving roof racks or
bike racks installed when they are not needed.
— Make sure the tire pressure is correct.
— Have maintenance performed regularly on the
vehicle.
— Do not drive with winter tires during the summ-
er.
— Do not let the engine run while the vehicle
parked.
— Use the Start/Stop system.
— Utilize the engine braking effect.
— Avoid driving short distances when possible.
— Plug-in hybrid drive: brake early and evenly to
use the recuperation function.
@) Tips
The amount of noise produced by the vehicle
can increase significantly when driving with a
sporty style. Show respect to others around
you and the environment with the way you op-
erate your vehicle, especially at night.
Energy management
Your vehicle is equipped with an intelligent ener-
gy management system for distributing electrici-
ty. This significantly improves the starting ability
and increases the vehicle battery life.
G) Tips
— If you drive short distances frequently, the
vehicle battery may not charge enough
while driving. As a result, convenience func-
tions for electrical equipment may be tem-
porarily unavailable.
— The vehicle battery will gradually drain if
the vehicle is not driven for long periods of
time, or if electrical equipment is used
when the engine is not running. To ensure
that the vehicle can still be started, the
82
electrical equipment will be limited or
switched off.
S Engine stopped: power steering and brake
booster not possible
There is a malfunction in the engine or the fuel
supply. More force is needed to steer and brake
the moving vehicle when the engine is stopped.
If the vehicle is rolling, try to bring it to a stop off
to the side from moving traffic. See an author-
ized Audi dealer or authorized Audi Service Facili-
ty for assistance.
EB EB Drive system: malfunction! Safely stop
vehicle
There is a malfunction in the plug-in hybrid sys-
tem. The brake booster and the power steering
may stop working. Stop the vehicle immediately
at a suitable location or as soon as possible. Park
the vehicle in a safe place outdoors that is not
near buildings, roof overhangs, carports or simi-
lar structures. Switch the ignition off. Have the
problem corrected by an authorized Audi dealer
or authorized Audi Service Facility.
B i B Electric drive: overheated! Safely stop
vehicle and check coolant
The coolant level is too Low or the coolant tem-
perature is too high. Stop the vehicle in the out-
doors as soon as it is safely possible. Switch the
ignition off.
Read the important safety precautions > A in
Coolant on page 312 and check the coolant level
= page 312. If the coolant level is OK, the mal-
function may be caused by the system overheat-
ing. Let the vehicle's electric drive system cool
down for some time.
— If the message turns off after cooling down and
switching the ignition back on, you can contin-
ue driving. Contact an authorized Audi dealer or
authorized Audi Service Facility immediately to
have the malfunction corrected.
— If the indicator light stays on, contact an au-
thorized Audi dealer or authorized Audi Service
Facility.

Driving


ZA WARNING
— Only apply the brakes for the purpose of
cleaning the brake system when road and
traffic conditions permit. You must not en-
danger other road users and increase the
risk of an accident.
— Due to the risk of injury, only have an au-
thorized Audi dealer or authorized Audi
Service Facility work on the brake system.
Incorrect repairs could impair the function.
— Never let the vehicle roll while the engine is
stopped because this increases the risk of an
accident.
— During automatic braking maneuvers, the
brake pedal may move downward automati-
cally. To reduce the risk of injury, do not

place your foot under the brake pedal.
@) Note
— Never let the brakes “rub” by pressing the
pedal lightly when braking is not actually
necessary. This can cause the brakes to over-
heat and increases braking distance and
causes wear.
— Observe the important information for driv-
ing downhill > page 89. This especially ap-
plies when towing a trailer.
@) Tips
— If you retrofit your vehicle with a front spoil-
er, wheel covers or similar items, make sure
that the air flow to the brakes is not ob-
structed. Otherwise the brake system can
overheat.

— Also refer to the information about brake
fluid > page 313.
Ga i © Brakes: malfunction! Safely stop ve-
hicle
There is a malfunction in the brake system. If
EES / & and Ef also turn on, there is a malfunc-
tion in the ABS, ESC, and braking distribution.
Do not continue driving. See an authorized Audi
dealer or authorized Audi Service Facility for as-
86
sistance. Read and follow the other safety pre-
cautions > A\.
EG if @ Warning! Brake servo inoperative
If the brake booster is not working, you have to
use much more force when braking the vehicle.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
EG - @® Brake pads: wear limit reached. You
can continue driving. Please contact Service
The brake pads are worn. Drive to an authorized
Audi dealer or authorized Audi Service Facility as
soon as possible to have the malfunction correct-
ed.
Brake booster: limited functionality. You can
continue driving. Please contact Service
There is a brake booster malfunction. The brake
booster is available, but its effectiveness is re-
duced. The braking performance may be different
compared to the usual performance. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the malfunction cor-
rected.
Brake booster: deactivated. See owner's manual
The brake booster remains active for a brief peri-
od of time after switching off the ignition. Secure
the vehicle from rolling by selecting “P” and set-
ting the parking brake.

ZA\ WARNING
If a malfunction occurs in the ABS, ESC, and
braking distribution, interventions that stabi-
lize the vehicle will no longer be available.
This could cause the vehicle to swerve, which
increases the risk that the vehicle will slide.
Do not continue driving. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.