will not shift out of second gear

What is your question?

has happened 5-6 times in last year. normally happens fist time driving in day. have to come to complete stop then accelerate and it will shift. dealer cannot duplicate the issue and computer shows nothing. any thoughts. thnx.

What makes this problem better or worse?

issue is first time driving in the day

How long has your 2017 Lexus LX570 had this problem?

one year