2021 AUDI A4 cruise control

Driver assistance

handling with predictive control, for example the
speed for driving through curves.
@) Tips
Certain settings are automatically stored and
assigned to the remote control key being
used.
Applies to: vehicles with Audi adaptive cruise control
If or is displayed when there is a mal-
function, the adaptive cruise control or traffic
jam assist functions may be unavailable or may
be limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 119 and try to turn on the sys-
tems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
Please take over!

This message appears if the vehicle rolls back
when starting on a slight incline, even though the
systems are active. Press the brake pedal to pre-
vent the vehicle from rolling or starting to move.
Traffic jam assist
Applies to: vehicles with traffic jam assist

B8V-0692


Fig. 115 Turn signal lever: button for traffic jam assist and
Audi active lane assist
138
Traffic jam assist supports the driver when driv-
ing in traffic jams or in heavy traffic.
In a speed range under 40 mph (65 km/h), the
system can help to keep the vehicle within a lane
calculated by the system. Within the limits of the
system, the system controls the steering auto-
matically when adaptive cruise control is switch-
ed on. Since traffic jam assist is only an assist
system, the driver must always keep his or her
hands on the steering wheel and be ready to
steer. The driver can override the control at any
time by actively steering.
The system is designed for driving on express-
ways and highways.
Requirements for using traffic jam assist:
> The traffic jam assist is preselected in the MMI
settings: Select on the home screen: VEHICLE >
Driver assistance > Traffic jam assist.
> Adaptive cruise control must be switched on
and active > page 132.
If you open the Driver assist display in the on-
board computer => page 16, the indicator
light and the message Traffic jam assist will turn
on when a traffic jam is detected.
Activating or deactivating traffic jam assist
> To activate or deactivate traffic jam assist,
press the > fig. 115 button.
Always switch off traffic jam assist in the
following situations:
— When increased attention is needed from the
driver
— In construction zones
— In city driving
— On stretches of road with curves
—In unclear traffic situations such as at intersec-
tions or toll stations
— The turn signal was activated.
Indicator lights
Traffic jam assist is available.
B and B - Traffic jam assist is switched on.
Vehicles driving ahead were detected. Your vehi-
cle adapts while driving.

8W1012721BC
Driver assistance

B - Traffic jam assist switches off if the driver
does not take over steering after multiple driver
intervention requests. The system brakes the ve-
hicle until it is stationary.
Steering intervention request
If no steering activity is detected or the steering
power from the system is not sufficient, the driv-
er steering intervention request will alert the
driver using audio and visual signals, such as
or E. Take over the steering and keep your
hands on the steering wheel so that you will be
ready to steer at any time.
If the driver does not take over steering, adaptive
cruise control (with traffic jam assist) will be
switched off. The system brakes the vehicle until
it is stationary.*

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras page 117.
— The activated traffic jam assist is only an as-
sist system, and the driver is still responsi-
ble for controlling the vehicle. The driver is
especially responsible for braking, steering,
starting to drive, and controlling the speed
and the distance from other vehicles.
— Turn on the traffic jam assist only if the sur-
rounding conditions permit it. Always adapt
your driving style to the current visual,
weather, road, and traffic conditions.
— Switch the traffic jam assist off temporarily
when driving in turning lanes or highway ex-
its. This prevents the vehicle from accelerat-
ing to the stored speed when in these situa-
tions.

@) Tips
— Always keep your hands on the steering
wheel. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— Pay attention to applicable local regulations
relating to driving tasks, leaving space for
emergency vehicles, etc. The driver is always
responsible for following the laws that are
applicable in the location where the vehicle
is being operated.
— If traffic jam assist was deactivated through
the MMI, you can continue operating the
Audi active lane assist using the > fig. 115
button > page 141. The traffic jam assist
functions are no longer available.
— You are not necessarily guided to the center
of your lane.
Messages
Applies to: vehicles with traffic jam assist
if &. or |i is displayed when there is a mal-
function, the traffic jam assist functions may be
unavailable or may be limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 119 and try to turn on the sys-
tems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
139

Driver assistance

Distance warning
Applies to: vehicles with distance warning
S| iS 9] nN ‘|
ja

Applies to: vehicles with adaptive cruise control:
Fig. 116 Instrument cluster: display of the current dis-
tance
RAZ-0400

Applies to: vehicles with Audi adaptive cruise control
Fig. 117 Instrument cluster: distance warning
General information
At speeds above approximately 40 mph (65
km/h), this function measures the distance to the
vehicle ahead as time. If the distance falls below
the warning threshold and remains there, the
system will warn you of the hazard with the &
indicator light.
Image in the Driver assistance display
Applies to: vehicles with Audi adaptive cruise control
The display only appears if the Driver assistance
display is selected in the on-board computer
= page 16 and the adaptive cruise control is not
actively controlling the vehicle.
@ Detected vehicle driving ahead
@ Use the markings to help you estimate the
distance to an obstacle. Each marking repre-
sents approximately one second.
@® Set warning threshold. Depending on the set-
tings, the display will be colored in from the
bottom to the top.
140
@ The actual distance is smaller than the set
distance and you will be informed about the
danger.
Adjusting the distance warning
The system can be switched off or on in the MMI
and you can customize the distance warning
threshold. The settings depend on the vehicle
equipment.
— Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > Distance warn-
ing.
Messages
1f Bo is displayed when there is a malfunc-
tion, the distance warning functions may be un-
available or may be limited.

A message that indicates the cause and possible
solution
may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 119 and try to turn the system on
again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.

ZA\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.

Gi) Tips
— The driver is always responsible for adhering
to the regulations applicable in the country
where the vehicle is being operated.
— You may fall below the warning threshold
briefly when passing or when quickly ap-
proaching a vehicle driving ahead. There is
no warning in this scenario. A warning is giv-
en only if you fall below the warning thresh-
old for an extended period of time.

8W1012721BC
Driver assistance

Audi active lane assist/
lane departure warning
General information
Applies to: vehicles with Audi active lane assist
The Audi active lane assist/lane departure warn-
ing (called only Audi active lane assist in the vehi-
cle displays and in the information that follows in
this Owner's Manual) can detect lane marker
lines within the limits of the system. If you are
approaching a detected lane marker and it ap-
pears likely that you will leave the lane, the sys-
tem can warn you with corrective steering anda
steering wheel vibration, if necessary.

Applies to: vehicles with Audi active lane assist

Fig. 118 Instrument cluster: driver assistance display
The system functions in the speed range of ap-
proximately 40 mph - 155 mph (65 km/h -
250 km/h).
Applies to: vehicles with Audi adaptive cruise control and traf-
fic jam assist
If the conditions are met, traffic jam assist
switches on at speeds under approximately
40 mph (65 km/h) > page 138.

Z\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117.

Display and warning
The availability, readiness to provide warnings,
and the warnings are indicated with indicator
lights. Audi active lane assist is ready to provide
warnings if an object is detected on at least one
side of the lane where your vehicle is traveling.




Driver assistance Indicator lights Meaning
display Audi virtual | Instrument
cockpit cluster (analog)
@ White 71% 7% Audi active lane assist is activated, but is not
lines ready to provide warnings.
@ Green ex 7\ Audi active lane assist is activated and ready to
line(s) provide warnings.
@ Red 7X 7 \ Blinking Audi active lane assist will warn you with correc-
line tive steering before exiting the lane. If the system
must intervene for a long period of time, a mes-
sage will request the driver to drive in the center
of the lane. The steering wheel will also vibrate
lightly when exiting the lane.

If the system is switched on but is not ready to
provide warnings, one of the following systems
limits or situations could be the cause:
— The necessary lane marker lines have not been
detected (for example, in a construction zone
or because the lines are obstructed by snow,
dirt, water, or lighting)
— The speed is below the activation speed
— The lane is too narrow or too wide
— The curve is too narrow
— The driver's hands are not on the steering
wheel
— Visibility is obstructed by a rise or dip.
141

Fuses and bulbs






Fuse panel @) (brown) Fuse panel (© (black)
14 | Fuel injectors, engine control module 11 Left rear door control module, left rear
15 |Ignition coils, heated oxygen sensors power window
16 | Fuel pump 12 | Parking heater
Fuse panel (®) (red) Fuse panel (0) (black)
No. | Equipment No. | Equipment

Anti-theft alarm system

Front seat electronic, seat ventilation,
rearview mirror, rear climate control sys-

































tem control panel, windshield heating, di-
agnostic connection
2 Diagnostic interface, vehicle electrical sys-
tem control module
3 |Sound generator
4 |Clutch position sensor
5S |Engine start, emergency shut-off
6 Diagnostic connection, traffic information
antenna (TMC)
7 |USB input
8 |Garage door opener
9 Audi adaptive cruise control, distance reg-
ulation
11 | Front camera
12 | Right headlight
13 | Left headlight
14 | Transmission fluid cooling
Fuse panel (©) (red)
No. | Equipment
1 {Ignition coils
2 |Climate control system compressor
S |Left headlight
6 |Automatic transmission
7 |Instrument panel
8 | Climate control system blower
9 |Right headlight
10 | Dynamic steering
11 | Engine start



2 | Engine control module
3 Left front seat electronics, lumbar sup-
port, massaging seat
4 | Automatic transmission selector lever
5 |Horn
6 |Parking brake
7 | Diagnostic interface
8 | Roof electronics control module
9 |Emergency call module
10 | Airbag control module
11 Electronic Stabilization Control (ESC), An-
ti-Lock Braking System (ABS)
12 | Diagnostic connection, light/rain sensor
13 | Climate control system
14 | Right front door control module
15 | Climate control system compressor
16 | Brake system pressure reservoir
Fuse panel (©) (black)
No. | Equipment
Front seat heating
2 |Windshield wipers
Left headlight electronics
4 Panoramic glass roof / sliding/tilting sun-
roof
5 |Left front door control module
6 | Sockets
7 Right rear door control module, right rear
power window
All wheel drive control module
9 | Right headlight electronics
10 Windshield washer system/headlight

washer system control module

274

Index

Numbers and
Symbols
3-zone deluxe automatic climate control.... 91
A
A/G.cooling MOde:. 6 « vice a 6 assis av arene «ow 91
A/C system refrigerant oil............00. 287
Accelerator pedals ¢ wes 2 naan ox news s crew 99
also refer to Accelerator pedal........... 99
AGCOSSOMIES « sresis as isso 4 o ansnine ao atowen 8 He 283
Active lane assist
refer to Audi active lane assist.......... 141
Adaptive cruise control................. 130
Adaptive dampers...............0.-005 111
Adjusting air distribution (automatic climate
control system) ................0 eee eee 92
Adjusting the brightness................. 55
Adjusting the sound..............-..00- 212
Adjusting the temperature (automatic climate
control system) ......... 0.0.00 cee eee eee 92
Adjusting the volume.............0 eee ee 29
Adjusting the volume (announcements).... 212
Adjusting the welcome sound............ 212
Airbag’system . « sss 5 sees se een se cee ee 71
Alarm system
refer to Anti-theft alarm system.......... 36
Alignment pin (changing the wheel)....... 261
All-weather lights...............-.000005 51
AS@ASON tifeSmman: + » swe se meee s Hee Be 250
All wheel drive
refer toquatto sews s ween ss ween as wens 112
Amazon Alexa integration
Media:playback:. jo sscee oo cise a enero oo 202
Operating...............0..0..0.0000. 27
AMI
refer to Audi music interface........... 202
Android Auto
refer to Audi smartphone interface...... 210
Anti-lock braking system............0005 113
Anti-Slip Regulation.................05. 113
Anti-theft alarm system...........-...04. 36
Apple CarPlay
refer to Audi smartphone interface...... 210
288
ASR
refer to Anti-Slip Regulation............
Audi active lane assist...............005
Cleaning the camera area..............
Audi adaptive cruise control
Cleaning the sensors...............005
Predictive control..............000005
Traffic jam assistwax < » sees ss eeee ss eens
Audi adaptive light..............--..00-.
Audi connect
TEfEFLO CONNEC: « = ewan ss news ss Hea Fs
AUdidrive SeleCt ws s y oem s i ween ya eee 4
Audi music interface..............0000-
Audio files........ 0.00.00 cece eee eee
Safety measures... ...... eee eee e wees
Audi side assist
refer to Side assist............-..000-5
Audi smartphone interface..............
Legal information...................5
Audi virtual cockpit
refer to Instrument cluster..............
AUTO
Automatic climate control system........
Automatic headlights ..................
Auto Lock (central locking) ...............
Automatic climate control system.........
Automatic luggage compartment lid....
Automatic transmission............-...05
Automatic wipe/wash system.............
Average consumption...................
Average speed... 0... ee eee eee eee
B
Bag hooks........ 2.52.
Band
refer to Frequency band...............

Index

Closing
Automatic luggage compartment lid...... 41
Convenience closing...........00.++00% 46
HOOP «a asaces Luggage compartment lid............... 41
Luggage compartment lid with foot motion . 42
Panoramic glass'roOf ici «+ eaves ew wrens oo a 47
Sliding/tilting sunroof................-. 46
Sufishadé (OOF): « + eww = x sates ¢ oem ze se 47
Wind OwS:. « sess «save oo ance 2 0 weuew sw vee 45
Cockpit diMMING:: « & excuse cers so eens ees 55
Cockpit (GVEMIEW)'s + saws 2 2 eam ae wows 2c ce 6
Collapsible spare tire.................0- 267
Collapsible tire
refer to Collapsible spare tire........... 267
Color cOd@ Compact spare tire. ........... sce e eee 266
Compartments...........0.0 eee eee eee 83
Compass inthe mirror............-0 0-0 ee 61
Compliance ..... 0.0... cee eee eee eee 284
Conference call......... eee eee eee eee 168
Configuration wizard « « sce 26 wicca a wena o 19
CONNEC son 2 & ieee 2 wares o were oo sR we oe L73
Data plans... 0... eee eee eee ee 177
Data Privacy..............2..0..0200. 279
Eme@ngericy'Calll ws a » aaa a & ons 2 9 rey 178
Infotainment............... 2.0 e ee eee 173
Infotainment services............00005 174
Online roadside assistance............. 179
Vehicle control services................ 175
Connected devices
Device overvieW.......... 00 eee eee eee 214
Connections
referto Media................--- 201, 203
Consumer information.................- 281
Consumption
Re@dUCING secs << sees = = wows sp eee sp ee 102
Consumption (fuel) .................000. 16
Contacts
IMPOFUNG ces s news 3 x woRG 5 5 aeEE Tae 170
Updating inthe MMI.................. 170
also refer to Directory...............-. 167
Convenience key...............00 000s eee 33
Convenience closing...........-...+6.: 46
also refer to Vehicle key..............-. 37
Convenience opening and closing
Windows or panoramic glass roof........ 46
290
Coolant temperature display.............. 14
Cooling system
Adding
coolant..............2--0000- 228
Checking the coolant level............. 228
GOOlANE
« sess oo soem oo memes © a ieenen @ DesemN 227
Cornering
lighticcs : gees s see es Senge 2 wes 51
Cruise control system..............00-5 127
CUB ROIGETS secs 5 eas « Basen Gs Hates ee BEG 82
Current consumption..............000005 16
D
Data module
Serial number (IMED) «swiss eae as rene 170
Data Plans = sees ss sees sine sarees bees 177
Data Privacy... .... cece cee ee eee eee 279
Date... eee eee 16
SEUting:< = = seme ¢ = see Fe ewes Fe ee Ee we 212
Daytime running lights.................. 51
Declaration of compliance............... 284
DEF (instrument cluster)..............005 12
Demo mode
refer to Presentation mode............. 191
Destination onthe map...............0. 184
Details... 6.0... ieee eee eee eee 184
Determining correct load limit........... 249
Digital GOMpass)s: sevsia + 0 woicssue se anesene 6 coven ws 61
DIMENSIONS ie. © & sss 2 w mens © w seen we AMR 286
Dimming the exterior mirrors............. 56
Dimming the rearview mirror............. 56
DIRECtO RY asus 5 2 wees 5s eee 5 3 ee Ey ERE 167
BUSIMESSICATG iam a wasn a 6 anesens « @ asanim www 168
Settings.......... 20.0.0 e eee eee eee 170
Display
Cleaning ....... 6... cece eee eee eee 258
Displaying tooltips..................00. 19
Disposal. ... 2.0.0... cee eee eee eee ee 281
DIStANGE cecriie is « coemmes ox mevece x somnwse ow omevere & 16
Distance’ Warning « sesisies + s acs w o enone & eeewens 140
Doors
Child safety lock............. 00... eee 44
DOOr COMEACESWITCH): « s waas s 6 eae s jaan a 3 54
Mechanically unlocking and locking....... 36
Driver information system................ L3
Drives
Feferto Med ideas se exw ae eevee 6 owe 201, 203