Low beams shut off wont turn on manually or automatically on 2007 Buick LaCrosse

I would remote start the buick at 4 am in dark. the low beams wouldnt light up. after a while they would go on. I had to drive with high beams on. now they wont light at all. checked fuses, the relay was replaced by an after market, but wasnt burnt or scored. replaced bulbs. cant afford a dealership repair job.

Asked by for the 2007 Buick LaCrosse
Will they work with the headlight switch on, if not have the dimmer switch tested.