2021 Audi A4 / S4 — Owner's Manual – Page #106

Posted on 12 Oct, 2020
Model: 2021 Audi A4 / S4
Pages: 304


File size: 108 MB

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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

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