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Hill Start Assist ECU

Prevents vehicle from rolling backward for a smooth start
For easy and safe clutch operation in starting the vehicle on a steep grade, this system retains the brake force even after the driver's foot leaves the brake pedal while the vehicle is stationary and automatically release the brake force when the clutch is engaging for start-up. This system utilizes the latest technologies including the computer-based automatic clutch wear monitoring.



The normally-open solenoid valve situated between the master cylinder and brake caliper can maintain or reduce fluid pressure when a vehicle is idling or starting up. Brake pressure is retained for brief a moment after the driver releases the brake pedal while the vehicle is stationary. The brake pressure is automatically released when the vehicle starts again, facilitating smooth start-off.

Hill Start Assist ECU