My headlights in my 05 don't want to come on at the same time. Usually it's one side or the other or sometimes neither. I have to turn the headlights on and off multiple times to get both bulbs to eventually come on. Once they're on, they stay on and work perfect. Thanks

 

maybe either your ballast, ignitor or bulb are on their way out...

 

I replaced the ballasts and ignitors already and the bulbs are fairly new

 

My brother and I ran into a similar problem with our 08 tl-s. He ended up replacing the bulbs and that fixed the issue for him. best of luck to you!