2020 AUDI A6 brakes

Driver assistance

— The adaptive cruise assist does not respond to
people, animals, or objects that are crossing or
approaching from the opposite direction.

Z\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 118.
Display overview
Applies to: vehicles with adaptive cruise assist

3] S|
me Ny Iz G3

Fig. 104 Instrument cluster: driver assistance display
Indicator lights and messages in the speedome-
ter @ -@) inform you about the driving situation
and the settings. In the Driver assistance display
@ - @, you can find more detailed information
about the system. The displays depend on the
country and equipment.
Display in the speedometer
The display in the speedometer is not available in
all layouts*.
@ Marking for the set speed
@ Current vehicle speed
@® Available speed range for adaptive cruise as-
sist (example)
136
Image in the Driver assistance display
The display only appears when the Driver assis-
tance display is open in the on-board computer
=> page 16.
Messages and settings
Detected vehicle driving ahead
Set target distance
The set distance is not met. The distance bars
will be colored red from the bottom upward.
Your vehicle
©®
CC®
Availability of lane departure warning and
lane guidance for adaptive cruise assist
© Availability of lane guidance for adaptive
cruise assist
Indicator lights
A - The speed/distance control is active. No
vehicles were detected ahead. The stored speed
is maintained.
Ba - The speed/distance control is active. A vehi-
cle was detected ahead. The adaptive cruise as-
sist controls the speed and distance from the ve-
hicle 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.
BS - 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 to a vehicle driving
ahead. You must intervene > page 141, Driver in-
tervention request.
& - The indicator light turns on if the system
does not detect enough steering activity by the
driver. Always keep your hands on the steering
wheel so you can be ready to steer at any time.
The indicator light will also turn off, for example
if the steering power from the system is not suf-
ficient and adaptive cruise assist is canceled
=> page 139, Steering intervention request.

4K0012721BD
Driver assistance

— The driver's hands are not on the steering
wheel
— Visibility is obstructed by a rise or dip.
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. Take over
the steering and keep your hands on the steering
wheel so that you will be ready to steer at any
time. The system will become inactive after a
short time and will only be active again later.
If the driver does not take over steering, adaptive
cruise assist will be canceled. If the vehicle is
equipped with emergency assist and it is ready to
function, it will be activated if possible
=> page 154.

ZA\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 118.

G) Tips
— Always keep your hands on the steering
wheel so you can be ready to steer at any
time. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— It is recommended to only switch on lane
guidance on well-constructed roads.
— Certain settings are stored automatically in
the active personal profile.
—The & fig. 107 button switches lane guid-
ance availability and the lane departure
warning on or off simultaneously, if lane
guidance is preset in the adaptive cruise as-
sist settings.
Setting the distance
Applies to: vehicles with adaptive cruise assist

B4M-0234


Fig. 108 Operating lever: setting the distance
If you adjust the speed, you must also change the
time gap to the vehicle driving ahead. The higher
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 G) or ().
The newly-set distance will be shown briefly, for
example with the indicator light. In the Driv-
er assistance display, a graphic display is shown
instead of the indicator lights > page 136,
fig. 104. The display matches the functions of
the indicator lights.
When approaching a vehicle driving ahead, the
adaptive cruise assist brakes to the set speed and
then maintains the set distance. If the vehicle
driving ahead accelerates, then the adaptive
cruise assist will also accelerate up to the speed
that you have set.
The following distances can be set:
139

4K0012721BD
Driver assistance

Audi pre sense basic
Applies to: vehicles with Audi pre sense basic
Audi pre sense basic is automatically active at
speeds of approximately 20 mph (30 km/h) and
higher. Audi pre sense basic can trigger the Audi
pre sense preemptive safety measures during
emergency braking and dangerous braking ma-
neuvers as well as in unstable driving situations,
such as oversteering or understeering.

Z\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 118.
Audi pre sense front
Applies to: vehicles with Audi pre sense front

The Audi pre sense front uses the data from the
camera and calculates the probability of a rear-
end collision. Within the limits of the system, an
impending frontal impact with vehicles, pedes-
trians), or cyclists!) may be detected in both ur-
ban and rural speed ranges.
Audi pre sense front is active at speeds of approx-
imately
6 mph (10 km/h) and higher. It can react
to pedestrians”) or cyclists!) at speeds up to ap-
proximately 50 mph (85 km/h), and can react to
vehicles at speeds up to approximately 155 mph
(250 km/h).
Early warning/acute warning
The system can recognize various dangerous sit-
uations. The early warning occurs if:
— A vehicle driving ahead brakes suddenly
— Your own vehicle approaches a vehicle in front
of you that is traveling at a significantly slower
speed or that is stationary
—A pedestrian or cyclist!) is standing in the lane
or is moving into the lane
The message Audi pre sense [J and a warning
tone will warn you about the danger.
The brakes may also be applied as an acute warn-
ing when there is an impending collision. You will

D_ This is not available in some countries.
also be warned by an indicator in the instrument
cluster display. When this warning occurs, it may
only be possible to avoid a collision by swerving
or braking strongly.
Automatic deceleration
If you do not react to the acute warning, Audi pre
sense front can brake the vehicle to a full stop
within the limits of the system )). This reduces
the vehicle speed in the event of a collision.
Automatic braking force increase
If Audi pre sense determines that you are not
braking strongly enough when a collision is immi-
nent, it can increase the braking force based on
the
situation.
Take-over
If the message Bo Please take over! appears, the
vehicle has been braked to a stop by Audi pre
sense and you must resume control of the vehi-
cle.

ZX WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 118.
— Audi pre sense front cannot overcome natu-
ral physical laws. It is a system designed to
assist and it cannot prevent a collision in ev-
ery circumstance. The driver must always in-
tervene. The driver is always responsible for
braking at the correct time. Do not let the
increased safety provided tempt you into
taking risks. This could increase your risk of
a collision.
— Audi pre sense front does not react to cer-
tain objects, such as animals, crossing or on-
coming vehicles, bars, railings, or railcars.
— Audi pre sense front may be limited or un-
available when driving in curves.
— Loose objects can be thrown around the ve-
hicle interior during sudden driving or brak-
ing maneuvers, which increases the risk of
an accident. Store objects securely while
driving.

147

Driver assistance


as well as the vehicle's surroundings with di-
rect eye contact.
— The system may not react if vehicles are ap-
Proaching very fast.
@ Tips
For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see > page 296.


Emergency assist
Applies to: vehicles with emergency assist
General information
Within the limits of the system, the emergency
assist detects if the driver is inactive. In these in-
stances, the system warns the driver, assumes
control of the vehicle if necessary, and brings the
vehicle automatically to a stop in the lane.
Regardless of the speed, the emergency assist is
automatically available when the adaptive cruise
assist* is activated. When the adaptive cruise as-
sist® is deactivated, the system is only active at
speeds higher than approximately 40 mph
(65 km/h).
Emergency assist functions
Within the limits of the system, the emergency
assist monitors the driver’s steering, accelerator,
and brake pedal activity. Depending on the se-
verity of the situation, it may initiate visual, au-
dio, and haptic warnings in stages:
— Reduces the speed
— Messages
— Lowers the volume of the Infotainment system
— Audible warning
— Tightening of the safety belt
—A brief application of the brakes

D_ This function is not available in every market and on all ve-
hicle equipment levels.
154
If the driver remains inactive despite the warn-
ings, the emergency assist controls the vehicle
within the limits of the system:
— The Audi pre sense preemptive safety measures
are triggered > page 146.
— The vehicle will stay in the lane and will be
braked to a stop.
— As soon as the vehicle comes to a full stop, the
emergency flashers are activated and the vehi-
cle prepares for the vehicle passengers to be
rescued. The parking brake is set, “P” gear is
engaged, the doors are unlocked, and the inte-
rior lighting is activated. If there is no move-
ment for several seconds, the emergency call ))
will be made if necessary.
Overriding the emergency assist
You can override the emergency assist > A\:
— Move the steering wheel. Or
— Press the brake pedal. Or
— Press the accelerator pedal distinctly.
When stationary, you can end the emergency as-
sist by leaving the "P" position or releasing the
parking brake > page 104.
Switching the emergency assist on and off
The system can be switched on and off in the
MMI & page 121.
Messages
1f E or EB is displayed when there is a malfunc-
tion, the emergency assist 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 120 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.

Checking and Filling

Audi dealer or authorized Audi Service Facility
for assistance.
Brake fluid

BFV-0229|


Fig. 159 Engine compartment: cap on brake fluid reservoir
Follow the safety precautions > page 231, Gener-
al information.
Checking the brake fluid level
> Slide the cover that is located below the wind-
shield wipers on the driver's side toward the
windshield and remove the cover.
> Read the brake fluid level on the brake fluid res-
ervoir > page 234, fig. 156. The brake fluid lev-
el must be between the MIN and MAX markings
>A.
The brake fluid level is monitored automatically.
Message
Ga / @ Brakes: stop vehicle and check brake
fluid level
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

Z\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and

240

driving safety, which increase the risk of an
accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.
() Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.


Electrical system
If the = A B or fm] indicator light turns on,
there is a malfunction in the power supply, the
battery, or the vehicle electrical system.
/ BB Electrical system: malfunction! Safely
stop vehicle
Do not continue driving and switch the ignition
off > A\. See an authorized Audi dealer or author-
ized Audi Service Facility for assistance.
= Electrical system: malfunction! Restart not
possible. Please contact Service
If you switch the ignition off, you will not be able
to restart the vehicle. Vehicle functions/driving
stability may be limited. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately.
= Electrical system: malfunction! Please con-
tact Service

Wheels

Glossary of tire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto-
matic transmission, power steer-
ing, power brakes, power win-
dows, power seats, radio, and
heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent.
Numbers of 55 or lower indicate a
low sidewall for improved steer-
ing response and better overall
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim.
Bead separation
means a breakdown of the bond
between components in the bead.
248
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the tire pressure recom-
mended by the vehicle manufac-
turer for a tire of a designated
size that has not been driven for
more than a couple of miles (kilo-
meters) at low speeds in the three
hour period before the tire pres-
sure is measured or adjusted.
Curb weight
means the weight of a motor ve-
hicle with standard equipment in-
cluding the maximum capacity of
fuel, oil, and coolant, air condi-
tioning and additional weight of
optional equipment.
Extra load tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Extra load
tires may be identified as “XL”,
“xl”, “EXTRA LOAD”, or “RF” on
the sidewall.

Wheels

Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs.
(2.3 kg) in excess of those stand-
ard items which they replace, not
previously considered in curb
weight or accessory weight, in-
cluding heavy duty brakes, ride
levelers, roof rack, heavy duty
battery, and special trim.
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the
beads are laid at substantially
90 degrees to the centerline of
the tread.
Recommended inflation
pressure
see > page 248, Cold tire infla-
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Rein-
forced tires may be identified as
“XL”, “xl”, “EXTRA LOAD”, or “RF”
on the sidewall.
250
Rim
means a metal support for a tire
ora tire and tube assembly upon
which the tire beads are seated.
Rim diameter
means nominal diameter of the
bead seat. If you change your
wheel size, you will have to pur-
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be-
tween the tread and bead.
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend-
ed periods of time. The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h) > table
on page 246. You may not find
this information on all tires be-
cause it is not required by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates the >

4K0012721BD
Wheels



Z\ WARNING
Overloading a vehicle can cause
loss of vehicle control, a crash
or other accident, serious per-
sonal injury, and even death.
—Carrying more weight than
your vehicle was designed to
carry will prevent the vehicle
from handling properly and in-
crease the risk of the loss of
vehicle control.
—The brakes on a vehicle that
has been overloaded may not
be able to stop the vehicle
within a safe distance.
—Tires on a vehicle that has
been overloaded can fail sud-
denly, including a blowout and
sudden deflation, causing loss
of control and a crash.
—Always make sure that the to-
tal load being transported -
including the weight of a trail-
er hitch and the tongue
weight of a loaded trailer -
does not make the vehicle
heavier than the vehicle’s
Gross Vehicle Weight Rating.

Determining correct load
Talis
Use the example below to calcu-
late the total weight of the pas-
sengers and luggage or other
things that you plan to transport
so that you can make sure that
your vehicle will not be overload-
ed.
Steps for Determining Correct
Load Limit
1. Locate the statement “THE
COMBINED WEIGHT OF OCCU-
PANTS AND CARGO SHOULD
NEVER EXCEED XXX KG OR XXX
LBS” on your vehicle’s placard
(tire inflation pressure label)
=> page 255, fig. 165.
2. Determine the combined
weight of the driver and pas-
sengers that will be riding in
your vehicle.
3. Subtract the combined weight
of the driver and passengers
from “XXX” kilograms or “XXX”
pounds shown on the sticker
=> page 255, fig. 165.
4. The resulting figure equals the
available amount of cargo and
luggage load capacity. For ex-
ample, if the “XXX” amount
equals 1400 lbs. and there will >
259