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WARNING
Lifting off of the rear wheel
due to heavy braking
Accident hazard
When braking heavily, bear
in mind that the ABS control
cannot always be relied on
to prevent the rear wheel
from lifting off the ground.
What are the design
characteristics of the
BMW Motorrad ABS?
The BMW Motorrad ABS en-
sures riding stability on any sur-
face within the limits of riding
physics.
From a speed greater than
2.5 mph (4 km/h), the
BMW Motorrad ABS can
ensure riding stability on any
surface within the limits of
riding physics. At lower speeds,
the BMW Motorrad ABS cannot
provide optimal support on
all surfaces due to system
limitations.
The system is not optimized
for the special requirements
encountered under the extreme
conditions of competitive off-
road and racetrack use.
Special situations
To detect the tendency of the
wheels to lock up, the speeds
of the front and rear wheel are
compared. If implausible values
are detected over a longer pe-
riod of time, the ABS function
is switched off for safety rea-
sons, and an ABS error is dis-
played. A self-diagnosis must
be completed before the fault
memory entry can be displayed.
Apart from problems with the
BMW Motorrad ABS, unusual
riding conditions can also
cause a fault memory entry to
be generated:
Riding on the rear wheel
(wheelie) for an extended
period.
Rear wheel spinning in place
with front wheel brake en-
gaged (burn out).
Rear wheel locked-up for a
longer period of time by en-
gine brake, e.g. when riding
downhill on slippery surfaces.
Should a Check Control mes-
sage occur due to an unusual
driving condition, the ABS
function can be reactivated by
switching standby mode off
and then on again.
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