If your vehicle gets stuck in mud or snow

Note: Do not rock the vehicle if the engine is not at normal operating temperature or damage to the transmission may occur.
Note: Do not rock the vehicle for more than a minute or damage to the transmission and tires may occur, or the engine may overheat.
If your vehicle gets stuck in mud or snow, it may be rocked out by shifting between forward and reverse gears, stopping between shifts in a steady pattern. Press lightly on the accelerator in each gear.
It may be beneficial to turn the AdvanceTrac with RSC system off so the wheels are allowed to spin.
See also:
Second generation (2003–2006)
   The Navigator was updated in 2003, along with the Ford Expedition, on the new 
Ford U platform. The interior was also substantially revised to bring it up to 
the level expected by luxury buyers. So ...
   
Underbody
   Flush the complete underside of your vehicle frequently. Keep body and 
door drain holes free from packed dirt. ...
   
Temperature A B C
   WARNING: The temperature grade for this tire is established 
for a tire that is properly inflated and not overloaded. Excessive 
speed, underinflation, or excessive loading, either separately or in  ...
   
