its giving me more symptoms now!

I went for a ride with everything connected, after a while 3rd gear locked on.. as usual.. usually it is fixed by turning the car off and back on...

Now, however, when i start it and put it on D, it goes on the "Limb home mode" all the transmission lights come on, but only when putting D on, not with N or P or R...

Ill try cleaning all the connectors i can find and see whats going on, do you know if theres any wiring for the gearbox in the engine room that couldve taken some water?