Lexus is300 2021, Service Manual

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4-2. Driving procedures
4
Driving
■ If “Brake Hold Malfunction Press Brake
to Deactivate Visit Your Dealer” or
“Brake Hold Malfunction Visit Your
Dealer” is displayed on the multi-infor-
mation display
The system may be malfunctioning. Have
the vehicle inspected by your Lexus dealer.
■
Warning messages and buzzers
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution. If a warn-
ing message is shown on the multi-informa-
tion display, read the message and follow
the instructions.
■ If the brake hold operated indicator
flashes

P.343
*
: If equipped
1 Louder
2 Lower
When the dial is turned to the lowest
volume, driving sound will be turned off
and the indicator will go off.
■ ASC is enabled when
The vehicle is being driven in normal mode
or sport mode. (

P.236)
WARNING
■ When the vehicle is on a steep incline
When using the brake hold system on a
steep incline, exercise caution. The brake
hold function may not hold the vehicle in
such a situation.
■ When stopped on a slippery road
The system cannot stop the vehicle when
the gripping ability of the tires has been
exceeded. Do not use the system when
stopped on a slippery road.
NOTICE
■ When parking the vehicle
The brake hold system is not designed
for use when parking the vehicle for a
long period of time. Turning the engine
switch off while the system is holding the
brake may release the brake, which
would cause the vehicle to move. When
operating the engine switch, depress the
brake pedal, shift the shift lever to P and
set the parking brake.
ASC (Active Sound Con-
trol)
*
The ASC system is an electronic
sound system that generates driv-
ing sound, conveying the kinetic sit-
uations of the vehicle’s acceleration
and deceleration to the driver
through the speakers behind the
instrument panel. The vehicle’s
response to the driver’s accelera-
tion behavior and shift operations
are also conveyed in sound. When
sport mode is selected, the sound
conveyed to the driver will be
louder.
Controlling volume