BMW HP4 Rider's Manual page 118

In addition to problems on the
7
BMW Motorrad Race ABS, un-
usual driving conditions can also
116
lead to a fault message.
Unusual driving conditions:
Heating up on an auxiliary
stand at idle speed or with gear
engaged.
Rear wheel locked-up for a
longer period of time by engine
brake, e.g. when riding down
steep hills.
Should a fault code result due to
one of the driving conditions de-
scribed above, the ABS function
can be reactivated by switching
z the ignition off and then on again.
How important is regular
maintenance?
Any technical system is al-
ways only as good as its
maintenance condition.
To ensure that the
BMW Motorrad Race ABS is in a
properly maintained condition, it
is vital that the specified service
intervals are kept to.
Reserves for safety
But remember: the potentially
shorter braking distances which
BMW Motorrad Race ABS per-
mits must not be used as an ex-
cuse for careless riding. ABS is
primarily a means of ensuring a
safety margin in genuine emer-
gencies.
Be careful in curves! When you
apply the brakes in a curve, the
motorcycle's weight and mo-
mentum take over and even
BMW Motorrad Race ABS is un-
able to counteract their effects.
Further development of
Race ABS to ABS Pro
with ABS Pro OA
In the past, the BMW Motorrad
Race ABS system of the HP4
provided for a very high level
of safety while braking during
straight-ahead riding. Now
ABS Pro also offers increased
safety even when braking in
curves. ABS Pro prevents
locking-up of the wheels even
in case of rapid brake actuation.
ABS Pro reduces abrupt changes
in steering forces, especially
during panic braking, and
therefore decreases the risk of
unwanted wheelies occurring.
ABS control
From a technical standpoint,
ABS Pro adjusts the ABS control
to the angle of inclination of the
motorcycle in dependence on the
respective riding situation. Sig-
nals for the roll and yaw rate and
the lateral acceleration are used
to determine the inclination of
the motorcycle. They come from