While I was driving 55 mph, on the throttle, the transmission acted as it was in Neutral but all indicators verified it was in Drive. The RPMs were fluctuating during this & my car wouldn't accelerate. I was in the middle of a busy highway, the car came to a stop, I shifted it into Park, then tried to engage back into Drive with no success. In the middle of oncoming & ongoing HWY traffic, I turned the car off, back on & the car acted as if it was in limp mode. The VSA light & Triangle appeared. I had to pay get a towing service to get me & my car. It never had any transmission issues before & all of a sudden it did all of the above, erratic shifting, flare up shifts, won't move. It was then put on a diagnostic scanner which showed a code for Torque Converter Clutch Solenoid but was cleared & didn't reappear. After the car has been sitting for a while (days) you can crank it, put it into drive & it is hesitant to go & will drive ONLY for a few minutes. After the transmission heats up, it stops pulling. I have read numerous complaints, safety concerns, bulletins, etc. I am devastated & lost on what's going on with the car & what can be done. I purchased my '05 TL in 2022 & haven't been able to drive it but for one & a half years. I've put so much money into the repairs & maintenance. I replaced the rear & front motor mounts, transmission speed sensor, transmission position sensor, etc. I am now disabled & don't have the means to put into it anymore. I pray there's an investigat