Normal operation

The ABS operates at speeds above 3 - 6 MPH (5 - 10 km/h). The speed varies according to road conditions.

When the ABS senses that 1 or more wheels are close to locking up, the actuator rapidly applies and releases hydraulic pressure. This action is similar to pumping the brakes very quickly. You may feel a pulsation in the brake pedal and hear a noise from under the hood or feel a vibration from the actuator when it is operating. This is normal and indicates that the ABS is operating properly.

However, the pulsation may indicate that road conditions are hazardous and extra care is required while driving.

    See also:

    Warning signals
    To help prevent the vehicle from moving unexpectedly by erroneous operation of the Intelligent Key or to help prevent the vehicle from being stolen, a chime or buzzer sounds from inside and ou ...

    Going & Stopping
    Base Altimas have a 2.5-liter four-cylinder engine that makes 175 horsepower (170 hp in states that have adopted California's emissions rules). A 270-hp, 3.5-liter V-6 is optional. A six-speed man ...

    Connecting procedure
    NOTE: The connecting procedure must be performed when the vehicle is stationary. If the vehicle starts moving during the procedure, the procedure will be cancelled. 1. Push the button on t ...