The bulbs could be burned out, the fuse could be bad, the switch that turnes them on/off could be bad, or there could be a faulty wire somewhere in the circuit. This is all I can think of right away, I'd start by checking the fuse and replacing the bulbs, and if neither of those fix it, you may have to take it in to a mechanic to check the switch and circuit wiring unless you know a fair amount about electrical systems.
NO!
Why does your 2001 Nissan Pathfinder heater fan stay on high even after I try to shut it off?"
change your bulbs and see if that's it.
your serpin belt needs replaced
For optimum performance, you should use high-test or premium gasoline in your Nissan Pathfinder, as per Nissan's specifications. Using a lower octane gasoline can result in premature ignition which can in the long run damage your engine.
Typically when a vehicles high beams fail to function, you will not see the high beam indicator illuminate on the dash either. When the combination switch is prompted by the user to activate the high beams it makes a ground connection on one of the relays terminals, closing the relay and the high beams turn on. The relay could potentially be bad, or the contact from the switch has been compromised by corrosion, or dirt. It is also possible that the contact point has bent far enough that it is unable to make contact with the relay from years of using the switch.
Get a new headlight switch even check your bulbs might help
Check bulbs Check switch Check relay Check Circuit breaker
Replace the bushings in the track bars that connect the rear axle to the vehicle.
An idle set too high can cause a 1994 Nissan Pathfinder to run at a high RPM in 5th gear. A bad transmission gasket can also cause this.
It is possible that the transmission bands are out of adjustment. They are not able to engage because of the maladjustment.
Only high beams work on my 93 Nissan maxima. Had new headlight put in but still doesn't work. What may this be? Thanks you so much