The doors will lock automatically when all doors are closed, the ignition is on, and the vehicle is shifted out of P (Park).
If a vehicle door is unlocked and then opened and closed, the doors will lock either when your foot is removed from the brake or the vehicle speed becomes faster than 13 km/h (8 mph).
To unlock the doors:
Automatic door locking cannot be disabled. Automatic door unlocking can be programmed. See Vehicle Personalization.
Brake Booster Vacuum Assist Description and Operation Hydraulic Brakes Brake Booster
System Component DescriptionHydraulic Brakes Block DiagramB19BBrake Booster Vacuum SensorK17Electronic Brake Control ModuleM9Brake Booster Pump MotorHard-WiredB19B-Brake Booster Vacuum SensorK17-Electronic Brake Control ModuleM9-Brake Booster Pump MotorThe Brake Booster Vacuum Assist system consists ...