On a recent trip towing the caravan I suddenly lost drive power (like engine revving and not connected to the transmission) and the ATP & 4WD Mode Indicator lights began to flash. I pulled over and let everything cool down for about half an hour. Restarted ok, drove another hour into Longreach, had transmission fluid flushed and replaced then drove home gently to the Gold Coast. This was the best the mechanics could do but did not really know the cause. Am not sure I feel confident in it not happening again. Any ideas will be appreciated.