Hello Rainer, perhaps you could elaborate on the access permissions again. I just had a case with a standing heater in a T6 where a "too high resistance in the glow plug" error was displayed, and then the heater was locked. After replacing the glow plug, I couldn't clear the error because the heater was still locked, and I couldn't unlock it because I didn't have the necessary access permissions.
Best regards, Rene
To add to this, even though I couldn't delete the entries at that moment and the pop-up appeared indicating that I didn't have the necessary access permissions, the heating eventually started working again.
Here's how to unlock the pre-heating function:
I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.