2021 AUDI S4 Indicator lights

8W1012721BC
Driver assistance

Driver assistance
Cruise control system
Applies to: vehicles with cruise control system
The cruise control system assists the driver in
maintaining a constant speed above approxi-
mately 15 mph (20 km/h). The system maintains
the desired speed by braking and accelerating.

ZA WARNING
— Always pay attention to the traffic around
your vehicle when the cruise control system
is in operation. As the driver, you are always
responsible for controlling your vehicle
speed and the distance between your vehicle
and
other vehicles.
— For safety reasons, cruise control should not
be used in the city, in stop-and-go traffic, on
winding roads, and when road conditions are
poor (such as ice, fog, gravel, heavy rain,
and conditions that could lead to hydroplan-
ing), because this increases the risk of an ac-
cident.
— Switch the cruise control off temporarily
when driving in turning lanes, highway exits,
or in construction zones.
—To reduce the risk of an accident, you should
only resume the stored speed if it is suitable
for the current traffic conditions.

() Note
Before driving downhill a long distance ona
steep hill, decrease your speed and select a
lower gear. This makes use of the engine brak-
ing effect and reduces the load placed on the
brakes.
@ Tips
The brake lights turn on when the brakes are
applied automatically.
Switching the system on
Applies to: vehicles with cruise control system

BFV-0220



Fig. 105 Operating lever: switching the system on
Requirement: the ignition must be switched on.
> To switch the system on, pull the lever toward
you to position ©.
The Gia or i$) indicator light and the corre-
sponding message will appear in the instrument
cluster.

ZA\ WARNING
If the brakes are malfunctioning (for example,
overheating) while the cruise control system
is switched on, the regulating functions may
shut off automatically.



estate Rem lad lite: Rag ena)
speed
Applies to: vehicles with cruise control system
When the vehicle is stationary, you can preselect
the cruise control speed or activate the speed
while driving.
Requirement: the system must be switched on.
> To preselect a cruise control speed when the ve-
hicle is stationary, tap the lever toward @)/G)
=> page 127, fig. 105.
> To activate the cruise control speed, pull the
lever
toward position @ while driving.
> To set the current driving speed as the cruise
control speed, press the button @) on the lever.
The active cruise control speed is indicated with
the Gg or kl indicator light in the instrument
cluster. >
127

8W1012721BC
Driver assistance

— The system does not react to a stationary vehi- @ - @, you can find more detailed information
cle in the same lane if it expects that you can about the system. The displays depend on the
easily drive around the stationary vehicle by country and equipment.
turning the steering wheel.
— The system cannot react to stationary objects, Display th thespeedsmeter
such as vehicles at the end of a traffic jam, es- @ Marking for the set speed
pecially when traveling at high speeds. @ Current vehicle speed
— The system has a limited ability to detect © Available speed range for the adaptive cruise
vehicles that are a short distance ahead, off to control (example)
the side of your vehicle, or moving into your
iane: Image in the Driver assistance display
— Objects that are difficult to detect, such as mo- The display only appears when the Driver assis-
torcycles, vehicles with high ground clearance, tance display is open in the on-board computer
or vehicles with an overhanging load, may be > page 16.
detected late or not detected at all.
— The system does not respond to people, ani-
mals, or objects that are crossing or approach-
ing from the opposite direction.
Messages and settings
Detected vehicle driving ahead
Set target distance
If you fall below the set distance, the dis-
tance bars turn red from the bottom upward.

ZA WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 117. Your
vehicle
Availability of Audi active lane assist
©O©©OQ®
COG®
Availability of traffic jam assist


Indicator lights
BI alo A - The speed/distance control is active. No
Applies to: vehicles with Audi adaptive cruise control

vehicles were detected ahead. The stored speed
is maintained.
RAZ-0205. a - The speed/distance control is active. A vehi-
cle was detected ahead. The system controls the
speed and distance from the vehicle driving
ahead, and accelerates and brakes automatically.
A - The speed/distance control is active but the
vehicle is not ready to drive. A vehicle was de-
tected ahead. Your vehicle is stationary and will
not start driving automatically. BI 3 9) nN | fac B - The speed/distance control is active but the
vehicle is not ready to drive. No vehicles were de-
tected ahead. Your vehicle is stationary and will
not start driving automatically.
aA - The automatic braking is not enough to
maintain a sufficient distance from a vehicle driv-
Fig. 108 Instrument cluster: driver assistance display ing ahead. You must intervene > page 137, Driv-
er intervention request. >

Indicator lights and messages in the speedome-
ter @ -@ inform you about the driving situation
and the settings. In the Driver assistance display
131

8W1012721BC
Driver assistance

the speed, the greater the distance that is need-
ed.
> Tap the rocker switch to display the distance
that is currently set.
> To increase or decrease the distance in incre-
ments, tap the switch again toward @) or ().
The newly-set distance will be shown briefly, for
example with the [eg indicator light. In the Driv-
er assistance display, a graphic display is shown
instead of the indicator lights > page 131,
fig. 108. The display matches the functions of
the indicator lights.
When approaching a vehicle driving ahead, the
adaptive cruise control system brakes to match
that vehicle's speed and then adjusts to the set
distance. If the vehicle driving ahead accelerates,
then the adaptive cruise control will accelerate
up to the speed that you have set.
The following distances can be set:

Sym-
bol
Meaning

The time between is approximately 2.4
seconds. This setting corresponds toa
distance of approximately 219 feet
(100 m) when traveling at 62 mph
(67 m/h).
The time between is approximately 3.6
seconds. This setting corresponds toa
distance of approximately 328 feet
(100 m) when traveling at 62 mph
(100 m/h).
D
1D



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


Meaning

The time between is approximately 1
second. This setting corresponds toa
distance of approximately 92 feet
(100 m) when traveling at 62 mph
(28 m/h).
The time between is approximately 1.3
seconds. This setting corresponds toa
distance of approximately 118 feet
(100 m) when traveling at 62 mph
(36 m/h).
nD
The time between is approximately 1.8
seconds. This setting meets the general
recommendation of “half the speed
shown on the speedometer”. This cor-
responds to a distance of approximate-
ly 164 feet (SO m) when traveling at
62 mph (100 km/h).
(i) Tips
— When setting the distance, the driver is re-
sponsible for adhering to any applicable le-
gal regulations.
— Depending on the selected driving program
and distance, driving behavior when acceler-
ating may vary from moderate to sporty
= page 137, Adjusting adaptive cruise con-
trol.
— The distances provided are specified values.
Depending on the driving situation and how
the vehicle ahead is driving, the actual dis-
tance may be more or less than these target
distances.
Overriding control
Applies to: vehicles with Audi adaptive cruise control



[RAZ-0096


Fig. 112 Operating lever: decreasing the distance
135

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

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

Audi connect

Information about the services and the corre-
sponding app was accurate at the time this man-
ual was printed. The scope of services depends
on the country and equipment. There may be
changes over the service life of the vehicle.

ZA WARNING
— Always follow the information found in > AA
in General information on page 173.
— Driver messages, text messages, and illumi-
nated warning and indicator lights in the ve-
hicle always take priority over information
from the Audi connect services. The infor-
mation displayed by the Audi connect serv-
ices should not cause you to take safety
risks. This can result in the vehicle breaking
down in traffic and to serious injuries or ac-
cidents.
G) Tips
— Accessing specific data or controlling func-
tions remotely depends on the charge level
of the vehicle battery. Therefore, these
functions only have limited availability after
switching off the ignition.

— An eSIM card establishes the Internet con-
nection for Audi connect vehicle control
services. The costs for this are included in
the price of Audi connect vehicle control
services. The cell phone network, for exam-
ple, must be available to use these services.
Applies to: vehicles with Audi connect vehicle control
Create a myAudi account by registering in the
myAudi app or at my.audi.com, depending on
your country.
>» Set the key user > page 30.
> Install the myAudi app on your mobile device
and log in with your access information.
@ Tips
Some services require you to enter a 4-digit
PIN that you set up during registration.
176
Settings
Applies to: vehicles with Wi-Fi hotspot
Requirement: the ignition must be switched on.
> Applies to: MMI: Select on the home screen:
SETTINGS > Connection settings > Wi-Fi
Depending on the country and the vehicle equip-
ment, the following functions may be available:
Wi-Fi
When the function is switched on, the MMI's Wi-
Fi hotspot is active and Wi-Fi devices can be con-
nected to the hotspot.
Wi-Fi hotspot settings
The Wi-Fi connection between the MMI and your
Wi-Fi device is encrypted. You can change the fol-
lowing information if needed.
— Access point (SSID): name of the Wi-Fi hot-
spot.
— Password: an initial password was set at the
factory in the MMI. Audi recommends changing
the initial password. Only use secure passwords
that conform to the general guidelines for se-
cure passwords. For more information, refer to
reputable and current sources on password se-
curity.
Allow data connection through Wi-Fi
When the function is switched on, mobile devices
can use the Internet connection through the Wi-
Fi hotspot. A data plan is needed to do this.

ZA\ WARNING
Always follow the information found in > A\
in General information on page 173.
@) Note
Always follow the information found in >@ in
General information on page 173.

8W1012721BC
Wheels

Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys-
tem is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal-
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
If the tire pressure monitoring indicator
appears
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Using the ABS sensors, the tire pressure monitor-
ing system compares the tire tread circumference
and vibration characteristics of the individual
tires. If the pressure changes in one or more
tires, this is indicated in the instrument cluster
display with an indicator light @ and a message.
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored again each
time you change the pressures (switching be-
tween partial and full load pressure) or after
changing or replacing a tire on your vehicle
=> page 254. The tire pressure monitoring system
only monitors the tire pressure you have stored.
Refer to the tire pressure label for the recom-
mended tire pressure for your vehicle
= page 245, fig. 168.
Tire tread circumference and vibration character-
istics can change and cause a tire pressure warn-
ing if:
— The tire pressure in one or more tires is too low
— The tires have structural damage
— The tire was replaced or the tire pressure was
changed and it was not stored > page 254
— Tires that are only partially used are replaced
with new tires
Indicator lights
If the @ indicator light turns on, there is a loss
of pressure in at least one tire .> A\ Check the
tires and replace or repair if necessary. Check and
correct the pressures of all four tires and store
the pressure again > page 254.
ia Tire pressure: malfunction! See owner's
manual
fi appears after switching the ignition on or
while driving and the @ indicator light in the in-
strument cluster blinks for approximately one
minute and then stays on, there is system mal-
function. Try to store the correct tire pressures
=> page 254. In some cases, you must drive for
several minutes after storing the pressures until
the indicator light turns off. If the indicator light
does turn off or turns on again after a short peri-
od of time, drive to an authorized Audi dealer or
authorized Audi Service Facility immediately to
have the malfunction corrected.

ZA WARNING
— If the tire pressure indicator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu-
vers. Stop as soon as possible and check the
tires and their pressure.
— The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
— Under certain conditions (such as a sporty
driving style, winter conditions, or unpaved
roads), the tire pressure monitoring system
indicator may be delayed.

253

8W1012721BC

HFP
refer to Hands Free Profile............. 162
High beams
High beam assistant.................4. 52
Highway lights ....... 0... cece eee eee ee ee 51
Hill descent assist..............02-000. 108
Hill descent control............0 eee eee 107
Hill hold assist... 0.0.2... ee ee eee eee 97
Home
refer to Home address...........-000% 187
Home address ....... 0.00.0. c eee eee ee 187
HomeLink
refer to Garage door opener............. 48
Home screen... ... 2. eee e eee eee eee eee 18
HOM... eee eee 6
Hotspot
refer to Wi-Fi...........0. 2.0 e eee eee 176
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Idle
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Ignition
Switching onvand Off". wes x y says « ¢ caver « 9 95
Imbalance (wheels) ............000000 0s 244
Immobilizer
refer to Electronic immobilizer........... 37
Indicatorlights » neow ¢ a wes ¢ ewer ws wares ao ee 7
INSpPectionintetWals ¢ ssw < gapen g x paves se ne 233
INStroMment ClUStErs = wasn s x wom » x eowe sy ew 12
Adjusting the layout................00. 13:
Cleaning........ 0... eee eee eee eee 258
ENGin@: code: « = sas ¢ seas ¢ eee ae Heese 215
Failures: «osc 2s mene oe pews se ee ¥ ee 12
On-board computer............00200 eee 16
Operating...............2.. 0.02.0 000 13
Service interval display................ 233
Software information................. 215
Switching tabs..................200005 13
Switching the view............ 00ers 13
Vehicle functions................00000- 16
Version information...............0-5 215
Instruments
Adjusting illumination.................. 55
Integrated Toll Module................. 125
Intelligent search
Navigation’: « s sxe 5 ¢ caw + + seein s o tees = 182
Interior lighting « . esccms ve ewe ve mes vw 54,55
Interior MONitOriNg’s + 2 wesw ce wows s ween a ae 36
Intermittent mode (windshield wipers) ..... 58
International’ travel... seessieivaseveuea Li?
Internet
veferto:connects =» ssw ss wees eo wes 2 oe 173
Internet radio
refer to Online radio.............. 197,198
iPhone
refer to Audi music interface........... 202
J
Jump starting......................00. 268
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Convenience opening and closing......... 46
Key replacement.........c:eecceeeeees 37
Mechanical key...........0...000 02000 37
PANIC button ....... 2.20... 00 cece eee eee 38
Replacing the battery.................. 39
Unlocking and locking.............e eee 38
Vehicle code... 6.2.2... eee eee eee eee 37
Key user... 2... ee eee ee eee 31
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Lane assist
refer to Audi active lane assist.......... 141
Lane departure warning
refer to Audi active lane assist.......... 141
Laptimer........... 0.000000. 0.0 2000. 124
Evaluating s « saws « & cae & & eee so ees os 125
StANEIINGsis 6 & conse w o owen 7 cummins & 7 aE & > 124
LATCH (securing child safety seats)......... 78
Leather care and cleaning............... 258
Legal information
License subscriptions................. 215
Software information................. 215
Software licenseSicx « s wews ss wee s genes 215
Version information...............000- 21S
License plate: brackets + scies 6 seen 3 6 ser 283
Lifting points (vehicle jack).............. 264
293