All-wheel drive
All-wheel drive is standard with the twin-turbo 3.5-liter V6. In good weather over smooth roads at modest speeds - when AWD is not needed - the system intelligently routes power only to the front wheels, improving fuel efficiency.
When driver input or road conditions indicate that slip might occur, the system sends power rearward to help prevent tire slip from happening in the first place (such as on rain-slicked or snow-covered roads).
A myriad of inputs enables the computer-controlled system to identify and immediately react - in as little as 16 milliseconds - to changing road conditions and driver demands. The amount of torque sent to the rear axle varies depending on road conditions and dynamic needs.
See also:
Damage
Periodically inspect the tire treads and sidewalls for damage (such as
bulges in the tread or sidewalls, cracks in the tread groove and
separation in the tread or sidewall). If damage is observed ...
Tire rotation
Rotating your tires at the recommended interval (as indicated in the
Scheduled Maintenance chapter) will help your tires wear more evenly,
providing better tire performance and longer tire life.
...
First generation (1998–2002)
The 1998 Navigator introduced the concept of the American luxury SUV,
competing at first with only the Land Rover Range Rover. It was trimmed with
leather, wood, and fine carpeting, but its humble ...