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:

    Center armrest (if so equipped)
    Pull the armrest down until it is horizontal. ...

    Anti-freeze
    In the winter when it is anticipated that the temperature will drop below 32°F (0°C), check the anti-freeze to assure proper winter protection. For details, see Engine cooling system in the M ...

    Altima in the Market
    Though it's subtle, Nissan's redesign of the Altima — its most popular model and the sixth-best-selling car in the U.S. last year — is significant, which is nothing less than what was needed i ...