My regime, whilst nothing nearing the fastidiousness of @DFB5.0, usually takes around 3.5 hours starting with the initial pressure rinse and snow foaming.
You are probably seeing the DRL's - not the fog lights - they are both contained within the the same housing on the 2016-2017 and would remain on unless you switch your parkers/headlights on.
I suspect that you would need a FORScan to change their behaviour.