Zitat:The AH system performs "sanity checks" continuously while you are driving. If it notices any parameters that appear to be "unreasonable", it will perform a calibration routine. During this time, AH is not active. If calibration returns the readings to sane values, you're good to go. If not, AH will set a code and display a message telling you to service active handling.

This message is most often seen shortly after starting and driving off in the car, especially if going over rough pavement or making sharp maneuvers. It can also happen at other times when sensors report things the AH system doesn't consider reasonable for the way you're driving.

This should be considered normal unless it happens frequently. Then you should have the car checked to make sure none of the sensors are intermittently malfunctioning.