2007 Lexus LS460 w/192,000
I took a 3-hour trip. While in traffic on the interstate, when accelerating in D (not manual) the engine "revs", not engaging as if in neutral. Shifted to manual to overcome, which seemed to work. Cruised at 80 MPH for 3 hours. Upon getting off the highway, the car would drive but it was as if It was starting in 5,6,7,8th gear...a very sluggish start. Shifted to Manual (1st/2nd) which did NOT work. No warning lights, no visible leaks, no smells.
When shifting into reverse, I detected a "thud" or non-smooth shift. No way to check fluid since it's sealed. I am in rural Illinois--nearest dealer is 90 miles away. Called my dealer for ideas. Short of a diagnosis, not much insight.
Need to make it back home which seems doable based on behavior.
Thoughts?