ZAB: menu item Pre-heating missing

Moin. I read out the error codes in my car two days ago, because the air conditioning doesn’t cool properly. There was an error in the ventilation. Meaningful: Ventilation additional control unit standing heater unplausible signal. I didn’t think anything about it, because I thought that I had pulled the telestarter off. Today I play around in the menus and have to find out that the menu item standing heating is missing. Instead, “residual heat” is to be read there. Since I’m on my way, I can’t post the original bug text. Comes when I’m home later. Does anyone have an idea anyway? Greeting RocketRider