Start-Up Cycle

When the ignition is turned ON, a popping sound and a slight brake pedal movement may be noticed. The ABS warning lamp will also be on for up to 5 seconds after the ignition is turned ON. When the vehicle is first driven off, a humming may be heard or felt by the driver at approximately 20-40 kph (12-25 mph). All of these conditions are a normal function of ABS as the system is performing a diagnosis check.