Audi allroad 2001, Руководство пользователя

Страница: 207 / 306

VEHICLE
Operation
The Anti-Lock Brake System (ABS) and the
Electronic Differential Lock (EDU are inte­
grat_ed in the Electronic Stability Program. In
a_ddrtron to the data provided by these func­
tions, the ESP control unit requires addition­
al measurement data provided by high-per­
forman?e sensors. The rotational speed of
the veh1cle about its vertical axis, vehicle lat­
eral acceleration, brake pressure and the
steering angle are measured.
The direction in which the driverwishes to
travel is determined with the aid of the
stee�ing angle and the vehicle speed and is
contmually compared with the actual be­
havior of the vehicle.
If the data do not match-for example when
a vehrcle is beginning to spin out of control
-the ESP applies the brakes to the appropri­
ate wheels for the given situation and, if
necessary, changes the vehicle traction
forces so as to reduce the slipping of individ­
ual wheels (ASR anti-slip regulation).
206
The vehicle is then stabilized by the forces
a?tin� on the wheel during braking. If the ve­
hicle
IS
oversteering (rear tends to skid out
of the turn), the brakes are mainly applied on
the wheel that is on the outside ofthe curve.
In the case of a vehicle that is understeering
(tendency to slide out of the curve). the
brakes are applied at the rear wheel that is
on the inside of the curve. An audible signal
�rll accompany the brake application func­
tion.
All �SP sensors a�e monitored continuously
wh1le the vehicle
IS
being driven. However,
when the vehicle is driven at low speed on
extremely rugged terrain, it is not always
possrble to monrtor the ESP sensors contin­
uously. Thus, in rare and exceptional cases
the ESP itself can deactivate (ESP and ABS
indicator lights will be lit continuously).
In this case. the ride level adjustment sys­
tem lowers the vehicle to the normal level
If this happens, you may need to select th�
ride level again (see page 1 53).
Operation of the ESP and ABS is restored
whenever you restart the engine.
m
WARN I N G
!
he Electronic Stability Program
••
nevertheless subject to the laws
of physics. It is particularly impor­
tant to pay attention to this fact on
wet and slippery roads.
It is therefore important that you
always adapt your driving to the
condition of the road and traffic
conditions. Do not allow the in­
creased safety provided by the
Electronic Stability Program sys­
tem to lull you into accepting addi­
tional safety risks.