Fuel Delivery problems of the 2004 Toyota Highlander

Have experienced acceleration hesitation problem on 2004 Toyota Highlander. Have taken the car to Toyota who insist that the car if fine and performing to their specs. Also contacted their regional office and was told to periodically check with the dealership to see if a technical service bulletin may have been issues, but as of now nothing was being worked on. Toyota did issues a TSB on a different 2004 model. As my wife drives this car usually with children I am very concerned about this hesitation.

The automatic transmission electronics get confused at street speeds, not allowing me to accelerate, especially when making a left across traffic. I have been nearly t-boned on numerous occasions. I talked to the Toyota dealership about a year ago, and the technician said that he was aware of the problem and expects Toyota to come up with a software update to fix the problem. Recently, I left a message with the same technician asking what progress has been made, and I received no reply. It is extremely scary to find this 'dead spot' in acceleration. This is our fourth Toyota, and might be the last if Toyota does not address this accident waiting to happen.