You know what just dawned on me? Perhaps these incidents are occurring when Tesla is having server issues. Once in a while the app is unavailable to all due to communication or server issues. Could be a case of bad timing?
I've had this problem for weeks. Don't know when it started but since the warm weather began I've rarely been able to turn on the climate control remotely.
Now with sleep mode off it works every time. But my morning range has dropped into the 330's from 344 km (which is in turn a drop from 353 that came from 5.11).
Rob.