Just installed the OPT7 in my 2015MY. Had the wrong frequency blinking issue... ordered the extra resistors to solve it. So far so good.
But I also have the missing DRL feature. My OPT7 have never lit up in white yet. I tried to Forscan the registers as mentioned above (726-45-01, 726-50-01). No luck.
What I am puzzeled about is if my stock turn signals should have been solid amber at any time... I believe they have not. Could that be the issue? Question though would be why??