Problem – automatic transmission – lever in the “P” position extremely heavy

My almost new S60 seems to have a problem. If I have the car gaparkt – and would like to start it again. The lever can only be moved with enormous effort from the P position. everything else works tip-top. I know that the gearbox has a mechanical lock, however I have exactly after instruction tightened the hand brake, pressed foot brake etc.. knows a vno you what is going on ? or is that normal ? It’s still warranty on it – but well.. Thanks for your answers Gruss from Paris