I have a 1997 4runner. I just got back last night, from a long trip where I towed a 1500lbs boat about 600 miles. all seemed well when I got home, but today I went to move it and It was stuck in park. I was able to push the shift lock and get it in drive, but it now I have to push it everytime i want to shift out of park. What would cause this. I know there is a little solenoid that controls it, but what would cause the solenoid not to activate the shift lock. Could the solenoid be bad or is the computer tell it not to activate.