Brakes - Audi A8 2018 Owner's Manual

u.
co ....
N
"
N
....
0
0
:c
'<t
Brakes
New brake pads
New brake pads do not achieve t heir f ull braking
effect during the firs t 25 0 mi (400 km) . They
must be "b roken in" fi rst . The break-in per iod can
be considerably longe r f or vehicles with ceram ic
brake roto rs*. However, you can compensate for
the slightly reduced braking fo rce by pressing
firm ly on the brake pedal. Avoid heavy braking
during the break-in period .
Wear
Brake pad
wear depends largely on the way the
vehicle is driven and on operat ing cond itions.
This is especially true if you are driving frequently
in the city and on curves or with a sporty driving
style .
Operating noise
Noises may occur when bra king depend ing on the
speed, braking force and outs ide cond itions such
as temperature and humidity .
Noises may become more apparent at lower
speeds due to the nature of the mater ials in the
ceramic brake rotors*.
Effect of water and road salt
In cert ain sit uat ions, f or example aft er dr iving
throu gh water, in heavy rain, afte r overnig ht con-
densat ion or after washing your car, the braking
effect can be red uced by moisture or ice on the
brake rotors and brake pads. The brakes must be
"dr ied" fi rst w it h a few careful brake applica-
tions .
At highe r speeds and with the windsh ield wipers
turned on, the brake pads press against the brake
rotors for a short amount of time. This action,
which is not felt by t he driver, happens at regular
inte rvals and ensures a bette r reacti on time fo r
the bra kes in wet weat her.
The braking eff ect can also be reduced if you are
driving on salted roads and you do not apply t he
brakes fo r long periods of t ime . The layer of salt
on th e brake rot ors and pads must be wo rn off
fi rst when th e brakes are applied.
Intelligent Technology
Due to its surface, t he ceram ic brake rotor * ab-
sorbs moistu re in certain situations. Therefore,
t here w ill tempora rily be less brak ing f orce t han
whe n the brakes are dry. You can compensate for
t his by pressing t he brake pedal harder.
Corrosion
Leaving t he vehicle parked f or lo ng periods of
time, low mileage and avoidin g heavy braking
can contrib ute to corros ion on the brake roto rs
and to dirty brake pads.
If you usually avoid heavy bra king or if the re is
corrosion present, occasional heavy bra king at
high speeds is recommended to clean the brake
roto rs and pads
c:>
,& .
Brake system malfunction
If you notice t hat the brake pedal t ravel has sud -
denly
increased, then a brake circuit in the dua l-
circuit brake system may have malfu nctioned .
Drive to an authorized Audi dealer or autho rized
Audi Service Facility immed iate ly to have the
prob lem cor rected . On the way there, drive w ith
reduced speed and keep in mind that you will
need a longer dist ance to stop and you will need
to press the bra ke pedal harder.
Low brake fluid level
When the bra ke fluid level is low, malfu nctions in
the brake system may occur . The brake fl uid level
is elect ron ically moni t ored.
Brake booster
The brake booster ampli f ies t he pressure you ap-
ply to the brake pedal. It on ly works w hen the en-
gine is runn ing.
A
WARNING
-
- Only apply the brakes for the purpos e of
cleani ng the bra ke syst em when road and
t raffic cond ition s permi t . You mu st not en-
danger oth er road users. This incr eases th e
risk of an accident.
- Never let t he vehicl e roll wh ile th e engi ne is
st opped because this incr eases th e risk of an
accident .
ll),
129