For the headlights, do you still hear the motor work to try and open the headlights? The failure is likely either the motor or a relay (if you don't hear the motor try to work) or the bushings if the motor works but the covers fail to open. Bushings used to be available inexpensively on eBay.
F1 means a communication error to the traveler if I remember. Probably need to make sure everything is still plugged into it and if nothing is obvious get a wiring diagram and check it out.
I somtimes get the F1-1 error on the Traveler and simply advancing to the next screen clears it up. It usually happens when I turn the key from run to accessory. I guess that creates a minor drop in voltage that the computer can't handle. Otherwise, you may have lost the data buss.