i don't know what to do except to take it to the shop and pay an arm and a leg.

I am thinking that this is an electrical problem, each time I use the remote to unlock the doors, or even lock the doors when I get out, the headlights pop up and then close (not supposed to do that) and then the driver side headlight makes this horrible grinding noise, like the motor is eating the teeth on a gear... any suggestions as to what this is or how I go about fixing it, please, please, please let me know! Thanks!