I'm not absolutely certain about the 2018 model, but there should be a DRL option which is set to disabled by default in Interceptors. It does work very well with the Ford Ready-for-the-Road LED parking/turn/strobe option if you want to enable it. Ford also sets two "Dark Car" parameters in the Interceptors' programming, one for exterior lighting and the other for interior. These settings keep the interior and exterior lights from coming-on automatically when doors are opened. I do not know if they interfere with enabling the DRL.
None of these options may be switched on or off without changing the vehicle's programming through Ford's IDS software or ForScan. These particular options are in the standard, menu-driven module reprogramming section, so a dealer mechanic should have no difficulty changing these settings in a few minutes.
I never really paid much attention to the Interceptor Sedans, today I learned that Ford didn't switch from using the projector headlights with them as they did with the Utility.