Hello all Im new here and to grand cherokees. My problem is this my dad has a 02 and and randomly the headlights will come on,the truck is off key out of ignition and out of the blue they come on and stay on long enough to drain the battery at times. any help would be great, thank you

 

May have a shorted relay, or low battery voltage will cause strange things to happen.

 

Turn the headlights off before turning off the engine will help.
I had that problem too and works for me.