Hello, I have the XC 60 D4 Summum, R-Design with preheater. EZ 12/2014. I use the Volvo app. See picture in the appendix! Question: If I start the preheater directly and without a timer in the app, it always went out again after 5 minutes…. The interior remained cold. Outside temperature around -2 to 0 degrees. Do I do something wrong? There is then in the app: preheater starts, start requested, preheater switched on. At the car also quietly something is buzzing…But just after 5 minutes the fun is over. Tank and battery are full. Question about the timer: There I set my departure time and not the time when the preheater should start, right? The interior should then be warm even after 20 minutes, or? Previously in the app stood about 25 minutes that the preheater would be switched on. I get out to the car. No noises, car cold. What am I doing wrong? Do I have to program something in the car? The runtime or the temperature?