Brake-by-wire replaces the traditional hydraulic linkage between the driver's foot and the brake calipers with electronic sensors and actuators. When the driver presses the pedal, an electronic control unit calculates the required stopping force and commands electric motors or electro-hydraulic pumps to apply pressure at the wheels. This allows for precise integration with regenerative braking and stability control systems.
We need to recalibrate the pedal stroke sensor on the BBW system before clearing the ABS fault codes.
Technicians must follow specific electronic service routines to bleed or service BBW systems, as traditional manual bleeding can damage the hydraulic accumulators.
Also heard as
- brake-by-wire
Related terms
ABS
The anti-lock braking system prevents wheels from locking up during emergency stops.
ECU
The primary computer that manages engine performance, fuel delivery and emissions.
Regenerative braking
A system that slows a vehicle by converting its kinetic energy into electrical energy.
Drive-by-wire
The replacement of traditional mechanical control linkages with electronic sensors and actuators.