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If the ASTC indicator lamp flashes and the multi-information display shows that the brake system is hot, the ASTC will be disabled.
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This operation is performed for the following reasons and is not a malfunction.
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- ASTC-ECU calculates the estimated temperature of the brake pad. In general, as the brake pad temperature increases, the coefficient of friction for the brake pad becomes smaller, resulting in the reduced braking force. When the estimated temperature of the brake pad reaches the specified value or more, ASTC-ECU flashes the ASTC indicator lamp at a rate of 2 Hz to warn the driver that the brake controllability by ASTC is decreased by the reduced braking force. Consequently, ASTC-ECU prohibits the ASTC control until it determines that the estimated temperature of the brake pad is normal.
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