As a Lexus technician have you seen the shift solenoid a electrical issue much? they tell me it's either the solenoid or the connections between the solenoid and the computer or the computer I just wonder what you generally see on this, mine is new to me, a low miles, 45K, on a 1994, some seem to think sticky varnish on the solenoid and use some Berryman B12 to disolve the varnish, B12 cust svc concurs its worth a try, i suction out 3qts after a treatment and put Dexron III back in.