I have corolla xli 2007 . Since last 2 weeks i had saw problem which my headlights they wouldnt switch on in first try and i also saw light flucatuating like sometimes going dim. So today i tried to switch on the car ,sulf was fine but it didn start tried alot battery ndd everythin is fine. Got machenic he said everything is fine might be problem of computer chip. So can someone guide me wat to do. And also how much it cost for new chip