I’m sure all of you have changed your batteries at one time or another, me too but now with all these electronics, I’m not real good with all this new technology and I just changed the battery in my wife’s car and thought maybe I’ll skim though my owners manual again and I found that some things when you disconnect the battery have to be reprogrammed so then I thought I’m screwed, but I talked to my son-law who worked at Toyota for a while about it and he said yeah some of the newer models do and what he did was made some jumpers so that there’s no lost connection so I made some and there under the back seat, in AZ you’re lucky to get 3 years out of a battery