2003 Nissan Pathfinder Owner's Manual - Page 188

If any malfunction occurs in the 4WD system when the key switch is ON, the warning light will either remain illuminated or blink. If the 4WD warning light comes on, the 4WD indicator light goes out. High-temperature transfer case oil makes the warning light blink rapidly (about twice per second). If the warning light blinks rapidly during operation, stop the vehicle in a safe place immediately. Then if the light goes off after a while, you can continue driving. A large difference between the diameters of front and rear wheels will make the warning light blink slowly (about once per two seconds). Change the 4WD shift switch into 2WD and do not drive fast. recommended when the 4WD warning light turns on. ¼ When the warning light comes on, the 2WD mode may be engaged even if the 4WD shift switch is in AUTO or 4H. Be especially careful when driving. If corresponding parts are malfunctioning, the 4WD mode will not be engaged even if the 4WD shift switch is shifted. ¼ Do not drive on dry hard surface roads in the 4H or 4LO position. Driving on dry hard surface roads in 4H or 4L may cause unnecessary noise, tire wear and increased fuel consumption. If the 4WD warning light turns on when you are driving on dry hard surface roads ¼ in the AUTO or 4H position, shift the 4WD shift switch to 2WD. ¼ in the 4LO position, stop the vehicle, move the automatic transmission lever to the N position, and shift the 4WD shift switch to 2WD. ¼ If the warning light is still on after the above operation, have your vehicle checked by an authorized NISSAN dealer as soon as possible. ¼ The transfer case may be damaged if you continue driving with the warning light blinking rapidly. CAUTION ¼ If the warning light comes on or blinks slowly during operation or rapidly after stopping the vehicle for a while, have your vehicle checked by an authorized NISSAN dealer as soon as possible. ¼ Shifting between 4H and 4LO is not Starting and driving 5-31