I have a 1999 GS300 SE (UK spec) which shows a continuous flashing ECT/PWR light on the dash, ostensibly indicating a Solenoid problem. However, I have changed the transmission/gearbox oil with no sign of metal shavings therein (an indication of Solenoid problems) and I have driven more than a 1000 miles with the light flashing and with the car running PERFECTLY. Any thoughts anyone?