Electronic Brake Force Distribution (Ebd) System - Subaru 2008 Impreza Owner's Manual

position and goes out after approximately
2 seconds.
This is an indication that the ABS system
is working properly.
When driving with an insufficient battery
voltage such as when the engine is jump
started, the ABS warning light may illumi-
nate. This is due to the low battery voltage
and does not indicate a malfunction.
When the battery becomes fully charged,
the light will go out.
CAUTION
If the warning light behaves as
described below, the ABS system
may not be working properly.
When the warning light is on, the
ABS function shuts down; however,
the conventional brake system con-
tinues to operate normally.
The warning light does not illu-
minate when the ignition switch
is turned to the "ON" position.
The warning light illuminates
when the ignition switch is
turned to the "ON" position, but
it does not go out even when the
vehicle speed exceeds approxi-
mately 8 mph (12 km/h).
The warning light illuminates dur-
ing driving.
If these occur, have the ABS system
repaired at the first available oppor-
tunity by your SUBARU dealer.
NOTE
If the warning light behavior is as
described below, the ABS system may
be considered normal.
The warning light illuminates right
after the engine is started but goes out
immediately, remaining off.
The warning light remains on after
the engine has been started, but it goes
out when the vehicle speed reaches
approximately 8 mph (12 km/h).
The warning light illuminates during
driving, but it goes out immediately and
remains off.
Starting and operating
Electronic Brake Force Dis-
tribution (EBD) system
The EBD system maximizes the effective-
ness of the brakes by allowing the rear
brakes to supply a greater proportion of
the braking force. It functions by adjusting
the distribution of braking force to the rear
wheels in accordance with the vehicle's
loading condition and speed.
The EBD system is an integral part of the
ABS system and uses some of the ABS
system's components to perform its func-
tion of optimizing the distribution of brak-
ing force. If any of the ABS components
used by the EBD function fail, the EBD
system also stops working.
When the EBD system is operating, you
may hear a chattering noise or feel a slight
vibration in the brake pedal. This is normal
and does not indicate a malfunction.
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