Lexus ES-300 2001 Manual page 331

STARTING AND DRIVING
Drum–in–disc type parking brake system
Your vehicle has a drum–in–disc type parking brake
system. This type of brake system needs
bedding–down of the brake shoes periodically or
whenever the parking brake shoes and/or drums are
replaced.
Have your Lexus dealer perform the bedding–down.
Brake assist system (Vehicles with
vehicle skid control system)
When you slam the brakes on, the brake assist
system judges as an emergency stop and provides
more powerful braking for a driver who cannot hold
down the brake pedal firmly.
When you slam the brakes on, more powerful braking
will be applied. At this time, you may hear a sound in the
engine compartment and feel the vibrations of the brake
pedal. This does not indicate a malfunction.
The brake assist system becomes operative after the
vehicle has accelerated to a speed in excess of
approximately 10 km/h (6 mph). It stops operating when
the vehicle decelerates to a speed below approximately
5 km/h (3 mph).
For an explanation of this system's warning light, see
"ABS warning light" on page 65 and "Vehicle skid control
system warning lights" on page 65.
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