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ABS op
e
ration
When a vehicle speed of about 10 mph
(20
km/h) is reached, an
aut
o
-
matic test sequence is
run
.
Some noise from the pump may be
audible
.
If
the speed of a whee
l
slows down too much relative to vehic le
speed and it starts to lock, brake pressure
to th
is wheel is reduced.
This adj ustment process can be felt as a
pulsing motion of the brake
pedal
, accompanied by some noises. You as the driver are
intention-
ally being given the infor mation tha
t
the wheels are tending t
o
lock
(ABS control range). In order for ABS to be ab le
to
operate optima lly
in this range, you must keep the brake pedal depressed
-
do
not
"pump
the brakes".
Brake
assistant
The brake power assist un it
increases
the pressure that you
genera
t
e wi
t
h
t
he brake
p
edal.
It
wo rks only when
t
he engine is
running.
Automatic
full braking
This function allows fu ll bra king in spite of high brake pedal forces
(e.g. whe
n t
he brakes are seve rely
str
essed beca use
t
he veh icle is
fully loaded)
.
The driver not ices this function through a reduction of
pedal force and increased pedal t ravel. When the brake peda
l
is
released, fu
ll
braking assist switches off again automatically
.
If there is an ABS failure, the brake assistant and automatic fu ll
brak
i ng
assist are not available.
&
WARNING
•
ABS cannot suspend the
law
s of
physics.
You should keep this
in mind in parti cular on an icy or wet road
.
If ABS control of braking
intervenes
,
you should adjust your speed immediately to road and
traffic condit
ions.
Do not be tempted by the increased safety
provided to take risks
-
danger of an accident.
•
Please keep in mind that the risk of an accident is increased by
driving too fast
,
particularly in bends and on icy or wet
roads,
and
&
WARNING (continued
)
by driving too close to the vehicle ahead
.
The increased risk of an
accident cannot be reduced by the brake assistant
-
danger of an
accident
.
[
i
]
Tips
If a ma lfunction occurs in the ABS,
th
is is signalled by an indicator
l
ight, see
=>
pag
e
20.
E ectro-mechan-;cal
power
assist
The electro-me chanical po wer assist helps the driver
when steering.
The
d
egree
of
pow
er
assis
t
is electronically
matched t
o
veh ic le
speed
.
The power stee ring system assists
the
driver so that he can steer the
vehic le with reduced physica
l
effort.
Power steering wil
l
not work if the engine is off. As a result, the
ste
eri ng wheel wi
ll
be hard to
t
urn
.
&
WARNING
If the system develops a problem
,
you must seek qualified
profes-
sional
assistance.
0
Note
If there is an electronic ma lfunction, servotronic wi ll st ill
function
li
ke a conve ntio nal power stee ri ng system, prov
idi
ng a constant
steering support force
that
is no longer proportionate
to the
vehicle
speed. This is most
not
iceable when turni ng the
st
eering wheel at
low speeds (for examp le when parking),
-
more effort will be
required
t
han usual.
._
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