Active Stability & Traction Control (ASTC)
6-60
Starting and driving
6
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The active stability & traction control
(ASTC) takes overall control of the anti-lock
brake system, active stability control function
and active traction control function to help
maintain the vehicle’s control and traction.
Please read this section in conjunction with
the page on the anti-lock brake system, active
stability control function and active traction
control function.
Anti-lock brake system (ABS)
P.6-57
Active Stability Control function
P.6-60
Active Traction Control function
P.6-61
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The active stability control function is
designed to help the driver maintain control
of the vehicle on slippery roads or during
rapid steering maneuvers. It works by con-
trolling the engine output and the brake on
each wheel.
Active Stability & Traction
Control (ASTC)
CAUTION
Do not over-rely on the ASTC. Even the
ASTC cannot prevent the natural laws of
physics from acting on the vehicle.
This system, like any other system, has lim-
its and cannot help you to maintain traction
and control of the vehicle in all circum-
stances. Reckless driving can lead to acci-
dents. It is the driver’s responsibility to drive
carefully. This means into account the traffic,
road and environmental conditions.
Be sure to use the same specified type and
size of tyre on all 4 wheels. Otherwise, the
ASTC may not work correctly.
Do not install any aftermarket limited slip
differential (LSD) on your vehicle. The
active stability control function may stop
functioning properly.
NOTE
An operation noise may be emitted from the
engine compartment in the following situa-
tions. The sound is associated with checking
the operations of the ASTC. At this time, you
may feel a shock from the brake pedal if you
depress it. These do not indicate a malfunc-
tion.
• When the operation mode is put in ON.
• When the vehicle is driven for a while after
the engine is turned on.
When the ASTC is activated, you may feel a
vibration in the vehicle body or hear a whin-
ing sound from the engine compartment.
This indicates that the system is operating
normally. It does not indicate a malfunction.
When the anti-lock brake system warning
lamp is illuminated, the ASTC is not active.
CAUTION
On vehicles with the rear differential lock,
the ASTC and ABS functions are suspended
while the rear differential lock is activated.
ASTC indicator lamp, ASTC OFF indicator
lamp and ABS warning lamp are illuminated
while these functions are suspended. It does
not indicate a problem. When the rear differ-
ential lock is disengaged, these indicator
lamp go out and function again. Refer to
“ABS warning lamp/display” on page 6-58,
“ASTC indicator or ASTC OFF indicator”
on page 6-62.
Active Stability Control func-
tion
NOTE
