Did you have a scanner (scanguage) attatched to your obdii port
If so that will do it for sure
The CRD's data bus is a confused mess and does not like being messed with
Did it operate ok after pulling it off the road and restarting it? It's been a long time since it's been happening here and I don't remember the lights but suddently down shifting to 3rd at highway speeds was one symptom the a torque converter failing
Another symptom was like driving a stick shift and forgetting to push the clutch while coming to a stop.