While on the track today my PDK went into limp mode only allowing fifth and sixth gear. The message on PCM read "transm fault, poss no R, drive poss". Not having seen this before in other track days at much higher ambient temps I packed up my stuff without turning the car off and limped the 60 miles home. I was afraid to turn the car off that far from home for fear of it completely faulting. When I got home I turned the car off and then started it again and the fault was gone and all is well. Is the message I received the message for high PDK oil temp? The car is in warranty and even though all seems well should I have the dealer look at it? Is this the new computer age of autos and I should just get over it?