I don’t know if the facelifted version has been updated. Have you tried the Bluelink App to see if your Tucson Phev can pre-heat or cool the car @Kezo
As explained to Rene I honestly don’t know, as I haven’t read the manual coming from a Tucson or have I downloaded the app. Rather just gave insight to how your model heated and asumed the same.
In all fairness I’m suprised a PHEV has a coefficient heater given how tiny the batteries are in comparison to BEV’s and with winter being hard enough on the battery, zapping another 4 or 5kW out of it preheating, will surely put into hybrid mode sooner, than having the engine on high tick over to keep the heat topped up every now and again, especially if your journey is anymore than local and you want to prioritise electric range for as long as possible. Catch 22 whether it is a benifit or not!