Electric Parking Brake System Description - Overview
The electric parking brake system replaces the traditional parking brake pedal or lever and linkage with an electrically controlled parking brake mechanism in the rear calipers. This reduces driver effort and provides additional features such as:
Simple electric switch operation
Parking brake release upon acceleration
Automatic rollaway prevention

The system is controlled by the VSA modulator-control unit.

The electric parking brake consists of the following primary components:
VSA modulator-control unit
Electric parking brake actuators
Electric parking brake switch
System indicators

For locations of each component on vehicle, refer to Component Location Index, and for functions of indicators, refer to How to Troubleshoot the Electric Parking Brake.

Function
The electric parking brake system has following functions.