A few days ago my standard heater gave up the spirit. My XC60 is now almost a year old and I had no problems so far. At first the heater only started for a short time, about 5min with a quiet pump or fan gyro, but the typical firing of the burner didn’t come. No error message, just abort. Then came the message via the VOC app on’s mobile phone(“Bug: pre-climate due to necessary maintenance by Volvo aborted”. In the course of the day, “fuel-powered heating maintenance required” appeared in the AI. The message now appears every time after starting and the box takes forever to get warm (about 10km of highway). Does anyone have any idea what the cause might be? The days and nights before the failure it was relatively cold (below -10°C). Could it be due to bad diesel (sulphurization) or what else is going on at the SHZ?