Vehicle brake system

A brake system for a vehicle, comprising:

• a first hydraulic-pressure control mechanism configured to control a hydraulic pressure in a plurality of hydraulic brakes respectively provided for a plurality of wheels of the vehicle to thereby control a braking force to be applied to the vehicle;
• a second braking-force control mechanism configured to control the braking force, the second braking-force control mechanism being different from the first hydraulic-pressure control mechanism;
• and
• a controller including a first-abnormal-state detecting device configured to detect whether the first hydraulic-pressure control mechanism is in a first abnormal state as an abnormal state,
• wherein the controller is configured to:
• control the first hydraulic-pressure control mechanism so as to control the braking force when the first-abnormal-state detecting device does not detect that the first hydraulic-pressure control mechanism is in the first abnormal state;
• and
• control not the first hydraulic-pressure control mechanism but the second braking-force control mechanism so as to control the braking force when the first-abnormal-state detecting device detects that the first hydraulic-pressure control mechanism is in the first abnormal state,
• wherein the brake system comprises a temperature obtaining device configured to obtain a temperature of a working fluid in the brake system,
• wherein the controller includes:
• a second-abnormal-state detecting device configured to detect whether the first hydraulic-pressure control mechanism is in a second abnormal state, the second abnormal state being a state that the first hydraulic-pressure control mechanism reaches before reaching the first abnormal state;
• and
• an assist control device configured to control the second braking-force control mechanism so as to control the braking force when an assist wait time elapses after the second-abnormal-state detecting device has detected that the first hydraulic-pressure control mechanism is in the second abnormal state, the assist wait time being determined based on the temperature of the working fluid obtained by the temperature obtaining device.