DRL/Signature light problem

Hi All,

I have a 2014 Metropolis with the lovely LED signature lights on them. However, the passenger side unit isn't lighting up correctly. Not as apparent in this photo but it's very noticeable during the day or in your reflection on the car in front! Worried this might be a new headlight unit job but just wondered if anyone else has experienced this?

From memory, the signature LED emitters are on the same circuit, so if one section has failed, it'll be a new headlamp unit, as I suspected the LEDs aren't available as a spare part.