TSB software update

Last Sunday just one minute from my house, multiple warning lights came on. The big triangle with exclamation mark, VSC, yellow brake light with exclamation mark, check engine and a car with exclamation mark on the MFD. I sort of knew what the problem was; in fact I was proven right when I took the car to the dealer the next day. I have to say that the car's performance was not affected at all! It turned out to be the Coolant Heat Storage Water Pump; I already knew it was not working properly by the noise it made every morning. I was waiting for December to take the car to the dealer (the issue becomes very noticible the colder the ambient temperature, being Texas I figured December was a good time to let the dealer hear the noise). The car had other plans! The dealer immediately put me in a loaner car (2009 Toyota Highlander) and next day the car is fixed.

My question is, does the new pump include a new operating software? The new pump operates in a completely different manner! It always pumps the coolant back to the thermos under shutdown procedures. However, under start-up procedures it only pumps coolant back to the engine when the car has being sitting for a long time. My old pump would work everytime I started the car. I think the new pump will wait for the engine temperature to drop below a new threshold and them pump warm coolant to speed up warm-up time.