BMW R 1200 GS 2005 Rider's Manual page 77

higher braking efficiency than
standard brake systems.
ABS anti-lock braking
system
ABS prevents the wheels
locking under braking, thus
contributing significantly to
road safety.
Rear wheel lift
Even under severe braking,
a high level of tyre grip can
mean that the front wheel
does not lock up until very
late, if at all. Consequently,
ABS does not intervene until
very late, if at all. Under these
circumstances the rear wheel
can lift off the ground, and the
outcome can be a highsiding
situation in which the motor-
cycle can flip over.
Severe braking can
cause the rear wheel to
lift off the ground.
Bear in mind that ABS can-
not be relied on in all circum-
stances to prevent the rear
wheel from lifting clear of the
ground.
Residual braking func-
tion
When the ignition is switched
off, during self-diagnosis,
or if the BMW Integral ABS
malfunctions, only a residual
braking function remains
available in the brake circuits
in question. The residual
braking function is the braking
power without the hydraulic
servo assistance of the BMW
Integral ABS. Under these
circumstances, therefore,
you must apply considerably
higher pressure to the brake
levers in question in order to
apply the brakes, and lever
travel is longer. When the
residual braking function
is active, the ABS function
is unavailable in the brake
system in question. When the
residual braking function is
active, the integral braking
function is partially or entirely
unavailable.
Without the assistance
of the ABS function, the
wheels could lock when the
brakes are applied hard. You
have to apply considerably
more force to the brake
levers to brake without
servo-assisted brakes. The
changed braking response
can cause accidents.
Avoid hard braking if possible.
Apply brakes in good time as
increased effort is required.
Have the fault rectified as
quickly as possible by a spe-
cialist workshop, preferably
an authorised BMW Motorrad
dealer.
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