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This can cause a temporary reduction in braking
force compared to dry brakes. You can compen-
sate for this by pressing the brake pedal harder.
Corrosion
There may be a tendency for dirt to bui ld up on
the brake pads and corrosion to fo rm on the discs
if the car is not driven regularly or only for short
trips with little use of the brakes.
If the brakes are not used frequently, or if corro-
sion has formed on the discs, it is advisable to
clean off the pads and discs by braking firmly a
few times from a moderately high speed
c:>
&..
Faults in the brake system
If you should notice a sudden increase in brake
pedal travel, then one of the two brake circuits
may have fai led c:> .&,.
Low brake flu id level
Malfunct ions can occur in the brake system if the
brake fluid level is too low. The brake flu id level is
monitored electronically.
Brake power assist unit
The brake power assist unit increases the pres-
sure that you generate with the brake pedal.
It
works only when the engine is running .
Brake lining we ar st atu s
Brake lining wear may be checked by visual in-
spection of the condition of the brake pads
through the openings in the wheel. If necessary,
the wheel may be removed for this inspection
c:>
page
203 .
.8,
WARNING
- New brake pads don't have the best stop-
ping power and must be "broken-in" during
the init ial 250 mi les (4 00 km) of normal city
driving. The break-in period can be consider-
ably longer for vehicles with ceramic brake
rotors * . You can compensate for this by
pressing the brake pedal more firmly. This
also applies later when new pads are instal-
led .
- You should perform brak ing maneuvers for
the purpose of clean ing the brake system
Int e lli ge n t te chn o lo g y
only if road conditions permit. Other road
users must not be put at risk - you may
cause an accident!
- Before descending a steep grade, reduce
speed and shift transmission into a lower
gear or lower dr iving range. Do not ride the
brakes or hold the pedal down too long or
too often. This could cause the brakes to get
hot and dimin ish braking effic iency.
- Do not " ride the brakes" by rest ing your foot
on the pedal when you do not intend to
brake. This may cause the brakes to over-
heat, premat ure wear and increased stop-
ping distance.
- Under certain climatic and operat ing condi -
tions such as passing thro ugh water, dr iving
in heavy rain or after washing the vehicle,
the effectiveness of the brakes can be re-
duced. In winter, ice can accumulate on the
brake pads, lin ings, discs and drums. Care-
fully apply brakes for a test. Brakes will dry
and ice coatings will be cleaned off after a
few careful brake applications.
- Driving for an extended period of t ime on
salt-covered roads without using your
brakes can also affect braking efficiency .
Clean off accumulated salt coating from
brake discs and pads with a few cautious
brake applications.
- If you damage the front spoiler, or if you in-
stall a different spoiler, be sure the air flow
to the front brakes is not obstructed . Ot her-
wise the brake system could overheat reduc-
ing the effectiveness of the entire brake sys-
tem .
- Failure of one brake circuit will impai r the
braking capability resulting in an increased
stopping distance . Avoid driving the vehicle
and have it towed to the nearest Aud i dealer
or qualif ied workshop.
- Never let the vehicle roll to a stop with the
engine shut off.
- If the brake booster is not working, for ex-
ample when towing your vehicle, or because
the brake booster has somehow been dam-
aged, the brake pedal must be pressed con-
siderably harder to make up for the lack of
booster assistance.
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