2021 AUDI A4 start stop button

8W1012721BC
Driving

Switching the Start/Stop system off and on
The )* button is located above the selector lev-
er in the center console. The LED in the button
turns on when the function is switched off.
> Press (A)°* to switch the system on or off.
If you switch the system off during a Stop phase,
the engine will start again automatically.
Basic requirements
— The driver’s door and the hood must be closed
and the driver’s safety belt must be fastened.
—"P","N", or "D" must be engaged.
—The steering wheel must not be turned far in ei-
ther direction.
— The vehicle must have driven faster than 2 mph
(3 km/h) since the last time it stopped.
— The vehicle is not in trailer mode.
@ Note
Always switch the Start/Stop system off when
driving through water > page 103.
@ Tips
— Depending on the driving situation, the en-
gine may already stop when coasting before
the vehicle has come to a complete stop.
— If you select the "D" position after shifting
into reverse, the vehicle must be driven fast-
er than 6 mph (10 km/h) in order for the
Start/Stop system to become active again.
This makes it possible to maneuver without
stopping the engine.
Stopping and starting the engine
Applies to: vehicles with Start/Stop system
> Press and hold the brake pedal until the vehicle
has stopped. The @] indicator light appears in
the instrument cluster once the engine stops
automatically.
> The engine starts again when you remove your
foot from the brake pedal. The indicator light
turns off.
If the parking brake is set, the engine will only
start again when the accelerator pedal is pressed.
@) Tips
— Press the brake pedal during a Stop phase
to keep the vehicle from rolling.
— The ignition will turn off if you press the
START ENGINE STOP] button during a Stop


phase.
— If you leave the vehicle briefly during a Stop
phase and then enter again, the driver's
door must be closed and the safety belt
must be fastened in order for the engine to
be able to restart.
— You can control if the engine will stop or not
by reducing or increasing the amount of
force you use to press the brake pedal. For
example, if you only lightly press on the
brake pedal in stop-and-go traffic or when
turning, the engine will not switch off when
the vehicle is stationary. If you press the
brake pedal harder, the engine will switch
off.
Starting and stopping the engine automat-
ically
Applies to: vehicles with Start/Stop system
The system checks if certain conditions are met
before and during the Stop phase, and deter-
mines if the engine stops and how long it re-
mains stopped. For example, if power usage is
high, the engine will not be stopped. Along with
other conditions, the following factors influence
the automatic engine start or stop:
— Environmental conditions (slopes, inclines, ele-
vation, temperature)
— Battery (charge status, temperature, power us-
age)
— Engine temperature
— Assist systems
— Driving behavior
Depending on the engine, the Gy indicator light
may appear if the engine is not stopped.
Applies to: vehicles with Start/Stop system
Drive system: please start the vehicle manually >
103

Driving

This message appears when specific conditions
are not met during a Stop phase. The Start/Stop
system will not be able to restart the engine. The
engine must be started with the
START ENGINE STOP] button.


Vehicle starting system: malfunction! Please
contact Service
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to
have the malfunction corrected.
Brakes
General information
You can apply the vehicle's brakes using the brake
pedal.
Operating noise
Noises may occur when braking depending on the
speed, braking force, and outside conditions such
as temperature and humidity.
Braking effect
The response time from the brakes depends on
the weather and environmental conditions. To
ensure the optimal braking effect, the brake sys-
tem is cleaned at regular intervals. This is done
by applying the brake pads to the brake rotors for
a short period of time when driving at high
speeds when the windshield wipers are switched
on.
If the brake system becomes damp, for example
after driving in heavy rain, the braking effect may
be delayed. Other factors that could temporarily
increase the response time of the brakes include:
— Wet conditions
— Low temperatures, ice, and snow
— Roads covered in salt
— Dirty brake pads
Corrosion
Corrosion may form on the brake rotors if there is
no heavy braking, if the vehicle is not driven for
long periods of time, or if the vehicle is not driv-
en
frequently or for long distances. In this case,
104
braking heavily several times while driving at
high speeds can clean the brake rotors > A\.
Brake pads
New brake pads do not achieve their full braking
effect during the first 250 miles (400 km). They
must be “broken in” first. However, you can com-
pensate for the slightly reduced braking force by
pressing firmly on the brake pedal. Avoid heavy
braking during the break-in period.
Brake pad wear depends largely on the way the
vehicle is driven and on operating conditions.
Brake pad wear increases when driving frequently
in the city or short distances or when using a very
sporty driving style.
Ceramic brakes
Applies to: vehicles with ceramic brakes
Ceramic brakes provide excellent deceleration
rates.
The break-in period for new ceramic brakes may
be significantly longer than for standard brake
rotors. Due to the properties of the material,
they may cause noises at lower speeds. Ceramic
brakes also absorb more moisture in wet condi-
tions. Therefore, there will temporarily be less
braking force than when the brakes are dry. You
can compensate for this by pressing the brake
pedal harder.
Automatic post-collision braking system
The automatic post-collision braking system can
help to reduce the risk of sliding and of addition-
al collisions after an accident. If the airbag con-
trol module detects a collision, the vehicle is
braked by the ESC.
The vehicle does not brake automatically if one of
the following occurs:
— The driver presses the accelerator pedal, or
— The braking force generated by the pressed
brake pedal is greater than the braking force
that would be initiated by the system
— The ESC, the brake system, or the vehicle elec-
trical system is not functioning

Driving


stabilize the vehicle will no longer be availa-
ble. This could cause the vehicle to swerve,
which increases the risk that the vehicle will
slide. Do not continue driving. See an author-
ized Audi dealer or authorized Audi Service Fa-
cility for assistance.

Electromechanical
parking brake
Operating the parking brake
The electromechanical parking brake is used to
secure the vehicle from rolling away unintention-
ally.
The ©) switch is located under the selector lever
in the center console. It turns on when the park-
ing brake is set. You can release the parking brake
manually or automatically when you start to
drive.
Setting and releasing the parking brake
> Setting: pull the ©) switch.
> 1f BM / © appears, the parking brake is hold-
ing the vehicle. You can remove your foot from
the brake pedal.
> Releasing: when the ignition is switched on,
press and hold the brake pedal and press the ©)
button.
If the red indicator light flashes, the braking
force has not built up enough or it has decreased.
You can also secure the vehicle by selecting the
“P” gear or pressing the brake pedal. Make sure
the indicator light is off before you start driving.
Automatically releasing the parking brake
when starting to drive
Requirement: the driver's door must be closed
and the driver’s safety belt must be fastened.
> Press the accelerator pedal to start to drive.

ZA\ WARNING
—To reduce the risk of an accident, always
make sure the vehicle is situated safely
while stationary.
— If the parking brake is set, it can release au-
tomatically when the accelerator pedal is

106
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 the power supply fails, you cannot set the
parking brake once it is released, or release
it if it is set. Secure the vehicle against roll-
ing before exiting the vehicle > page 96. See
an authorized Audi dealer or authorized
Audi Service Facility for assistance.
G) Tips
— On steep inclines, especially when in trailer
mode, the vehicle may roll backwards unin-
tentionally when starting to drive. To reduce
the risk of this happening, pull and hold the
switch while pressing the accelerator
pedal. If enough drive power has built up at
the wheels and the vehicle does not roll
backwards, then release the switch to start
to drive.
— If you leave the vehicle when “D” or “R” are
engaged, the parking brake will be set auto-
matically.

— Noises when the parking brake is set and re-
leased are normal and are not a cause for
concern.
— The parking brake goes through a self-test
cycle at regular intervals when the vehicle is
stopped. Any noises associated with this are
normal.
Emergency braking function
Emergency braking should only be used in an
emergency, if the standard brake pedal is mal-
functioning or obstructed. When the emergency
braking function is activated, the braking effect is
similar to a heavy braking maneuver.
> Pull and hold the @) switch while driving.
» An audio warning signal will sound and emer-
gency braking will begin.
> If you press the accelerator pedal, emergency
braking will be canceled.

Driving

Offroad driving
Applies to: allroad
Your vehicle is not an offroad vehicle. Note the
following points when driving offroad:
— Drive slowly and carefully.
—To reduce the risk of underbody damage, pay
attention to the vehicle's ground clearance and
drive across raised areas of the ground with the
wheels on one side of the vehicle, instead of al-
lowing the center of the vehicle to pass over the
raised areas.
— To reduce the risk of becoming stuck, drive
through sandy or swampy areas at a steady
speed and without stopping, if possible.
If necessary, use the following functions:
— Audi drive select* Offroad mode > page 110
— Hill hold assist* > page 108
— Limit ESC > page 114

ZA WARNING
Only drive in terrain that is suitable for the ve-
hicle and your driving ability.

@ For the sake of the environment
Avoid actions that are damaging to the envi-
ronment. Show respect for the natural envi-
ronment and remain on marked routes.
G) Tips
Clean your vehicle after driving offroad. Dirt
and stones falling off your vehicle can affect
other road users.
Driving through water
If you must drive through water, follow these in-
structions:
— Check the stability of the ground, the current,
and the water depth. If the ground is unstable,
there is a strong current, or there are waves,
the water must only reach up to the lower edge
of the body at the most.
— Deactivate the Start/Stop system*.
— Drive carefully and no faster than at walking
speeds to prevent the front of the vehicle from
108
creating waves, because they could splash
above the lower edge of the body. Oncoming
vehicles could also create waves.
— Do not stop the vehicle while in the water.
— Drive in reverse.
— Do not turn the engine off.

ZA WARNING
After driving through water, press the brake
pedal carefully to dry the brakes so that the
full braking effect will be restored.
@) Note
Vehicle components such as the engine, drive
system, suspension, or electrical system can
be severely damaged by driving through wa-
ter
Gi) Tips
If possible, avoid driving through salt water
because it increases the risk of corrosion. Use
fresh water to clean any vehicle components
that come into contact with salt water.
Hill descent assist
Applies to: vehicles with hill hold assist


The “2 button is located above the selector lever
in the center console. It lights up when the sys-
tem is turned on.
Hill descent assist can assist you when driving
down hills by maintaining a constant vehicle
speed by automatically braking all four wheels.
You can adjust the speed using the accelerator
and brake pedals. The regulation depends on the
hill and the vehicle speed.
> Switching on: press “2.
> Switching off: press “2 again.
Active regulation
Regulation begins shortly after you start driving
and is possible at speeds up to approximately 19
mph (30 km/h) and on hills that have an approxi-
mately 6-60% grade. If these conditions are met,
regulation will be activated and the indicator
light will turn on.

Driving information

— The traffic signs on the road always take pri-
ority over the display. The driver is always
responsible for adhering to the regulations
applicable in the country where the vehicle
is being operated.
— Units of measurement and language set-
tings are displayed based on how they were
set in the MMI system settings > page 212.
Applies to: vehicles with traffic light information
Switching traffic light information on and
off
» Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > Traffic light in-
formation.
Accessing traffic light information
> Select in the instrument cluster: vehicle func-
tions tab > Traffic signs.
@® Tips
If another tab or another function is selected
in the instrument cluster, the traffic light in-
formation will appear in the status bar on the
instrument cluster.
Messages
Applies to: vehicles with traffic light information
Malfunction! See owner's manual
The system could not be configured, for example
due to a network malfunction. Switch the igni-
tion off and shut down the vehicle to restart the
system. Wait several minutes until the vehicle
has shut down completely and then switch the
ignition back on.
Function currently unavailable. See owner's
manual
There is a temporary system malfunction. Check
if one or more of the following situations applies
and correct the issue if necessary:
— Traffic light information is switched off
— Data transmission is deactivated
124
— The vehicle is not equipped with traffic sign rec-
ognition.
— There is no valid license
— Traffic light information is not available in that
area
Lap timer
Introduction
Applies to: vehicles with lap timer
You can record and evaluate lap times with the
lap timer. You can operate the lap timer using the
multifunction steering wheel > page 13.
Opening the lap timer
> Select in the instrument cluster: Vehicle func-
tions tab > [| button > Lap times.
An additional indicator appears in the head-up
display*.

ZA\ WARNING
Your focus should always be on driving your
vehicle safely. As the driver, you have com-
plete responsibility for safety in traffic. To re-
duce the risk of an accident, only use the lap
timer functions in such a way that you always
maintain complete control over your vehicle in
all traffic situations.
G) Tips
You can retrieve information from the trip
computer while the lap timer stopwatch is
running.
ey sae |
Applies to: vehicles with lap timer

Requirement: the lap timer must be open
=> page 124.
Timing laps
> To start timing manually, select Start lap 1 in
the menu.
> To start timing automatically as soon as you be-
gin to drive, select Start lap 1 by driving off or
Start by driving off in the menu.

8W1012721BC
Driving information

> To start timing a new lap after driving a lap, se-
lect New lap in the menu. This starts timing
the next lap at the same time.
After completing a lap, the difference between
the last lap and the previous best lap time will be
won an indicated with a “~” or “+”.
Pausing timing and displaying a split time
> To insert a pause @ select Pause in the menu.
> To resume timing, select Resume in the menu.
> To display a split time, select Split time in the
menu. The split time appears for approxi-
mately ten seconds in the instrument cluster.
The current lap timing will continue running.
Canceling lap timing
The timing of the current lap will stop. The lap
time will be erased and will not be included in the
statistics.
> Select Cancel lap in the menu.
Resetting the time
> Select Reset lap times in the menu.
G) Tips
— A maximum of 99 lap times can be meas-
ured.
— If timing is paused, you can continue it later
even if you switch the ignition off.
— Saved lap times cannot be individually de-
leted from the total results.
— The saved lap timer values will remain after
switching the ignition off.
yo e-) a(t)
Applies to: vehicles with lap timer
Displaying lap statistics

You can display the number of laps driven
the fastest lap “+”, the slowest lap “-”, and the
average time “®” in the instrument cluster.
> Select in the instrument cluster: Vehicle func-
tions tab > E] button > Lap statistics.
> Turn the thumbwheel down or up to display the
individual lap times.
> To return to the lap timing that was started, se-
lect the [I button > Lap times.
Resetting lap statistics
Requirement: the lap statistics menu must be
displayed.
> To reset the lap statistics, press and hold the
left thumbwheel until the message No lap
times have been recorded yet. appears.
@) Tips
The lap statistics list the lap times for the last
30 laps. The fastest and slowest lap times out
of up to 99 measured laps are also displayed.
Integrated Toll Module
Applies to: vehicles with Integrated Toll Module
Depending on the region, you can pay toll fees in
certain countries using the Integrated Toll Mod-
ule (ITM). It replaces a separate transponder for
detecting toll fees. The system electronics are in-
tegrated in the rearview mirror housing.
To use the ITM in toll zones, you must register
and activate it.
Registration
> Applies to MMI: Select on the home screen: VE-
HICLE > Settings & Service > Vehicle informa-
tion Toll module.
> Note the Integrated Toll Module ID.
> To register the ITM, go to the displayed web ad-
dress and follow the instructions.
Activation
> To activate the ITM, press CD in the MMI.
Entering the number of passengers
Depending on the number of passengers and the
region, a lower toll fee may be charged. You must
either enter the number of passengers or deacti-
vate the ITM based on the laws applicable in the
area where you are driving.
> To enter the number of passengers, select the
appropriate button in the MMI.
> To deactivate the ITM, press @ in the MMI.
125
>

Parking and maneuvering

brakes or changing the direction. Park assist au-
tomatically steers the vehicle into the parking
space while the driver presses the pedals.
>» After stopping the vehicle briefly, make sure
the actual direction the vehicle is traveling
matches the direction indicated by the park as-
sist.
> Remove your hands from the steering wheel.
> Pay attention to the path of the vehicle. If the
traffic situation permits, accelerate carefully
> AX. The maximum parking speed is approxi-
mately 4 mph (7 km/h).
> Follow the visual instructions in the center dis-
play and the warning tones until the parking
process has ended.

ZX WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
— The park assist is an assist system. The driv-
er is still responsible for monitoring the ve-
hicle's surroundings and preventing colli-
sions when using the system.
— When using park assist to drive into or out
of a parking space, the steering wheel turns
quickly on its own. Reaching into the steer-
ing wheel spokes while this is happening can
result in injury.

tomatically steers the vehicle out of the parking
space while the driver presses the pedals.
> Start the engine.
> Press the Pe button in the center console.
> Wait until a message appears in the center dis-
play that specifies the direction of travel re-
quired to exit the parking space.
> Activate the turn signal on the desired side or,
depending on vehicle equipment, press that
side next to the vehicle in the center display.
» Make sure the actual direction the vehicle is
traveling matches the direction indicated by the
park assist.
> Remove your hands from the steering wheel.
> Pay attention to the path of the vehicle. If the
traffic situation permits, accelerate carefully
> AX. The maximum speed for exiting a parking
space is 3 mph (5 km/h).
> Follow the visual instructions in the display and
the warning tones until the vehicle has finished
exiting the parking space.
>» The process of exiting the parking space has
ended if additional corrective movements are
no longer necessary and the specified steering
wheel angle is sufficient to drive out of the
parking space. Resume control of the steering
wheel >@).


G) Tips
You can also cancel the driving direction set
by the system by shifting between a forward
gear and reverse gear. Based on the position
of the vehicle, the system then calculates the
additional steering and driving directions for
maneuvering.

Exiting parking spaces with park assist
Applies to: vehicles with park assist
If you parked the vehicle in a parallel parking
space, park assist can help you drive out of it.
In the center display, arrows and symbols on the
vehicle roof @) > page 158, fig. 133 indicate
what action is needed, such as applying the
brakes or changing the direction. Park assist au-
160
ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.
— The park assist is an assist system. The driv-
er is still responsible for monitoring the ve-
hicle's surroundings and preventing colli-
sions when using the system.
— When using park assist to drive into or out
of a parking space, the steering wheel turns
quickly on its own. Reaching into the steer-
ing wheel spokes while this is happening can
result in injury.

@) Note
Resume steering immediately after the last
corrective movement and the takeover
prompt, so that the specified steering wheel
angle is not recentered.

8W1012721BC
Navigation

Selecting map content (such as POIs) as the
destination
Requirement: map content must be displayed
=>page 191.
> Press on map content on the map (for example,
ii).
Selecting the destination
> Select: 4 > Start.
Route guidance will be activated and the map will
be displayed > page 185, fig. 142.
ST) ee mee EL
Applies to: vehicles with navigation system
You can enter additional destinations during ac-
tive route guidance.
Entering a stopover
Requirement: route guidance must be active.
> Enter a destination > page 182.
Displaying stopovers or the route plan
All destinations are listed in the route plan.
> Press on Pin the side menu on the map
=> page 185, fig. 142.
Editing stopovers
> Press on Pin the side menu on the map
=> page 185, fig. 142.
> Adding a stopover: Select: Add destination >
select a destination > Add to route.
> Moving a stopover: press Z. Touch the > sym-
bol and move the entry to the desired position.
Press Done.
> Deleting a stopover: Select: Z > one or more
entries or Select all > Delete > (Done).
Stopping route guidance
Applies to: vehicles with navigation system
Requirement: route guidance must be active and
the map must be displayed.
> Applies to: MMI: Press BX > page 185, fig. 142.
> Applies to: multifunction steering wheel: Select
in the instrument cluster: Navigation tab >
button > Cancel route guidance.

Map
Applies to: vehicles with navigation system
eee)
Pn ae
ie ie [Mena
Fig. 143 Marked map object
Opening the map
Applies to: MMI
> Press NAVIGATION on the home screen.
> If necessary, press /\ to display the map.
The following list gives an overview of the infor-
mation displayed on the map. Press on any func-
tion (for example, alternative routes) to show ad-
ditional options.
Select destination > page 183
Enter a destination using intelligent search
=> page 182
Cancel route guidance > page 185
Current route
Request spoken prompt
Alternative routes > page 187
COOH
OO
Display active destinations, stopovers, or
route plan > page 185. The distance to the
destination including the calculated arrival
time is displayed.
Online traffic information > page 190
Altitude ©®
185