Thank you for that response. I was feeling myself that it could be a software issue, but am not savvy enough to understand. Last night something strange happened when driving. I was in D7 and climbing a hill, the car started laboring and I saw the indicator show D4 on the dash, but the box had not changed down and there was no acceleration. It then changed down and revved slightly in the process. My simpleton take on this, is that the management system knows what had to happen, but the box was not getting/receiving the message. Am I making any sense? I am 65 years old and struggle with today's technology, it absolutely confounds me. Your thoughts would be appreciated.