- Before descending a steep grade, reduce
speed and shift transmiss ion into a lower
gear or lower driving 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
efficiency .
- Do not "ride the brakes " by resting your
foot on the pedal when you do not intend
to brake . This may cause the brakes to
overheat, premature wear and increased
stopping distance .
- Under certain climat ic and operating
condit ions such as passing through wa-
ter, driving in heavy rain or after washing
the vehicle, the effectiveness of the
brakes can be reduced . In winter, ice can
accumulate on the brake pads, linings,
discs and drums . Carefully apply brakes
for a test . Brakes will dry and ice coat -
ings will be cleaned off after a few care-
ful brake applications .
- Driving for an extended period of time on
salt-covered roads without us ing your
brakes can also affect braking efficiency .
Clean off accumulated salt coating from
brake discs and pads with a few caref ul
brake applicat ions.
- If you damage the front spoiler, or if you
install a different spoiler , be sure the air
flow to the front brakes is not obstruct -
ed . Otherwise the brake system could
overheat reducing the effectiveness of
the entire brake system.
- Failure of one brake circuit will impair
the braking capability resulting in an in-
creased stopp ing distance. Avoid driv ing
the vehicle and have it towed to the near-
est author ized Audi dealer or qualified
workshop .
Brake booster
The brake boos ter adds extra braking power.
The brake boost er works with vacuum pres-
su re wh ich is created only when the eng ine is
running¢ &,.
Int e llig e nt technolog y 20 1
A WARNING
- Never let the veh icle roll to a stop with
the engine shut off.
- If the brake booster is not working, for
example when towing your vehicle, or
because the brake booster has somehow
been damaged , the brake pedal must be
pressed considerably harder to make up
for the lack of booster assistance .
Functioning of Anti-Lock Brake System
(ABS)
ABS prevents the wheels from locking up un-
der braking.
The ABS contributes effect ively to vehicle con-
trol since it preve nts the whee ls from
locking
when the brakes are applied . This means that
the vehicle remains steerable and is less likely
to skid .
With ABS you do not need to pump the
brake. Just hold t he brake pedal down .
However, do not expect the ABS to shorten
braking distance under all circumstances .
When dr iving on g ravel or on new ly fallen
snow o n top of icy surfaces, braking dis t ance
may be even longer, therefore, under these
circumstances, it is especia lly important that
you drive s lowly and with great care.
How the ABS system works
An a utomat ic check is made when a speed of
about 12 mph (20 km/h) is reached . When
th is happens, a pumping noise can be heard.
If an ind ividual whee l begi ns to rotate too
s lowly in relation to vehicle speed and tends
to lock, the ABS automatically reduces brake
pressure to prevent that wheel from locking .
This automatic adjustment process will cause
a
slight vibrati on of the brake pedal and some
noises to a le rt you that ve hicle speed must be
adapted to existing road and traffic condi -
tions.
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