Headlight problem

'96 Grand Cherokee w/ auto on/off headlight switch. Last night, low beams came on at startup, passenger side low beam out, high beam ok. Today I checked lights by turning switch to on, high and low beams ok. At dark on auto, no passenger low beam. When I put light switch on on than I got that light to work, both high and low beam on. What is wrong? Thank anyone in advance for solution.

Not to sound strange my passenger headlight is doing the same thing. I wonder if it is the sensor. Can any one help?

I just took my jeeep into the Dealer today with the same problem. I have a 2000 JGC laredo. Hope this isn't going to be expensive. Hopefully I will know something today and I can give y'all the info. I any one else has experienced this problem please chime in.