202 Intelligent technology
- when driving with tire chains
- when driving in deep snow or on loose
ground and
- when rocking the vehicle loose after it has
become stuck .
When the abnormal situat ion is over, you
should activate the ASR again .
.&_ WARNING
The increased safety afforded by ASR does
not mean that you can take safety risks.
Always adapt your driving style to the road
conditions and traffic situation.
{i) Tips
To ensure that the ASR works properly, all
four wheels must be fitted with identical
tires. Any diffe rences in rolling radius of
the tires can cause the system to reduce
engine power when this is not desired. See
also
c:> page 258, New tires and replacing
tires and wheels.
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automobiles are still
subject to wear, depending largely on operat-
ing conditions and dr iving habits
c:> & . On ve-
hicles that are either driven mostly in stop-
and-go city traffic or are driven hard, the
brake pads should be checked by your author-
ized Audi dealer more often than specified in
the
Warranty & Maintenance booklet . Failure
to have your brake pads inspected can result
in reduced brake performance.
On st eep slopes, you shou ld use the braking
effect of the engine. This way, you prevent un-
necessary wear on the brake system. If you
must use your brakes, do not hold the brakes
down continuously . Pump the brakes at inter-
vals.
Noises may occur when braking depending on
the speed, braking force and outside condi-
t ions such as temperature and humidity .
Moisture or road salt
If you are driving faster than 31 mph (SO km/
h) and the windshield wipers are on, the brake
pads will briefly touch the brake discs in regu-
lar intervals so as to improve reaction time
when braking on wet surfaces. You, the driver,
will not notice anything.
Under certain conditions, for example, when
driving through water or very heavy rain, or
even after washing your vehicle, the braking
effect can be reduced due to moisture (or in
freezing conditions ice) on the brake pads. A
few careful brake applications should dry off
the brake pads or remove any ice coatings .
The effectiveness of the brakes can be reduced
when the vehicle is driven on a salt-covered
road and the brakes are not used. Here too,
you should clean off accumulated salt coating
from brake discs and pads w ith a few careful
applications of the brake
c:> .&..
Corrosion
There may be a tendency for dirt to build up
on the brake pads and corros ion to form on
the discs if the car is not driven regularly or
on Ly for short tr ips w ith litt le use of the
brakes.
If the brakes are not used frequently, or if cor-
rosion 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<=>& .
Faults in the brake system
If you should notice a sudden increase in
brake pedal trave l, then one of the two brake
circuits may have fa iled
c:> & -
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low . The brake flu id
level is monitored electronically . ..,.
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