1998 Nissan Frontier Owner's Manual - Page 127

COLD WEATHER DRIVING built-in diagnostic feature that tests the system each time you start the engine and move the vehicle at a low speed in forward or reverse. When the self-test occurs, you may hear a ''clunk'' noise and/or feel a pulsation in the brake pedal. This is normal and is not an indication of any malfunction. If the computer senses any malfunction, it switches the anti-lock brake system off and turns on the ABS brake warning light in the dashboard. The brake system then operates normally, but without anti-lock assistance. If an abnormality occurs in the system, the anti-lock function will cease but the ordinary brakes will continue to operate normally. The ABS brake warning light will then come on. If the light comes on while you are driving, contact an authorized NISSAN dealer for repair. WARNING The anti-lock brake system is a sophisticated device. But it cannot prevent accidents resulting from careless or dangerous driving techniques. It can help maintain vehicle control under some conditions, but remember that the stopping distance on slippery surfaces will be longer than on normal surfaces even with ABS. Stopping distances may also be longer on rough, gravel, or snow covered roads, or if you are using tire chains. Always maintain a safe distance from the vehicle in front of you. Ultimately, the responsibility for safety of self and others rests in the hands of the driver. Tire type and condition may also affect braking effectiveness. ● When replacing tires, install the specified size of tires on all four wheels. ● When installing a spare tire, make sure it is the proper size and type as specified on the tire placard. See ''Tire placard'' in the ''Technical and consumer information'' section. Freeing a frozen door lock To prevent a door lock from freezing, apply de-icer or glycerin through the key hole. If the lock becomes frozen, heat the key before inserting it in the key hole. Anti-freeze In the winter when it is anticipated that the temperature will drop below 32°F (0°C), check anti-freeze (ethylene glycol base) to assure proper winter protection. For details, see ''Engine cooling system'' in the ''Do-ityourself'' section of this manual. Battery If the battery is not fully charged during extremely cold weather conditions, the battery fluid may freeze and damage the battery. To maintain maximum efficiency, the battery should be checked regularly. For details, see ''Battery'' in the ''Do-it-yourself'' section of this manual. Using the System Depress the brake pedal and hold it down. WARNING Do not pump the brake pedal. Doing so may result in increased stopping distances. Draining of coolant water If the vehicle is to be left outside without anti-freeze, drain the cooling system by opening the drain valves located under the radiator and on the engine block. Refill 5-26 Starting and driving