I have checked fuses and the bulbs, the owners manual does not show any relays or Diodes specific to 2013. The ambient light sensor seems to be working properly as well, I had put good quality Morimoto LEDs in over a year a go and everything has been working great. I am not that sure when they quit coming on ( not real observant, huh) . Anyway would appreciate any 2013 specific trouble shooting for DRLs would be helpful.