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Home >> Buick >> 2021 >> Envision Preferred, FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Description and Operation >> ABS Description and Operation >> Brake System Control Module Features
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Brake System Control Module Features

Brake Drying/Cleaning 

Brake Drying/Cleaning autonomously applies a small amount of brake pressure during long driving on wet roads in order to remove water from the rotor surface. The brake application is unperceivable to the driver, but should result in improved brake feel and performance. Conditions to enable Brake Drying/Cleaning.

Hill Start Assist 

Hill Start Assist is a feature that will temporarily hold the vehicle while on a grade. This feature will hold the vehicle 2-5 seconds after the driver has removed their foot from brake pedal and the vehicle is on a grade exceeding 5%. The design is to prevent the vehicle from rolling down the hill before the driver has an opportunity to apply accelerator pedal.

Driveline Damping 

Driveline Damping is required on vehicles with ESC, Stop/Start functionality and an automatic transmission. This feature holds brake pressure to dampen driveline acceleration disturbance as engine is restarted and holds brake pressure to retard or prevent the vehicle from rolling. It is used for driver comfort and has also been used to extend vehicle hold on a steep grade.

Extended Hold Hill Start Assist 

Extended Hold Hill Start Assist will function the same as Hill Start Assist except there will be an indefinite vehicle hold instead of a temporary vehicle hold. The vehicle will be held by the Brake System Control Module, and then will transfer the hold to Electronic Park Brake when necessary. All of the driver exit strategies of Hill Start Assist with Electronic Park Brake will also apply to this feature.