My 2016 MS is acting up I think. I tried auto park last night and it would not complete the task. For the last week or so since I came back from a 2k road trip, the reverse position has been acting a little funny. I notice that as soon as I go into reverse, the STOP is displayed under camera. Also the chimes go off, and seem to be excessive as I reverse to park or pull out. Are my sensors bad? Do they need replacing, recalibrating? The stop and chimes do not stay on all the time during reverse, but they do every time I back up, just intermittently. Any suggestions?