Description & Operation
WARNING:
For warnings and procedures regarding vehicles equipped with Anti-Lock Brake Systems (ABS), see ANTI-LOCK BRAKE SYSTEM
article.
The hydraulic brake system uses a tandem master cylinder with vacuum power assist servo. All models except Avalon are equipped with standard front disc and rear drum brakes. Avalon is equipped with standard front and rear disc brakes.
A proportioning valve is used to regulate brake pressure between front and rear brakes. Rear drum brakes on all models are self-adjusting.
Parking brake lever mechanically activates rear brakes. On models with rear drum brakes, a cable applies rear shoes. On Avalon with rear disc brakes, parking brake is a duo servo mechanical drum brake design built into bell of rear rotor assemblies.