I live in the USA and I'm having the same problem with my 2016 RX450h. Thank you for the hints. The factory rep is coming in on Tuesday, 12 Dec, to have a look. I'll mention to him the solutions you've found. Thank you! Regards, Mike PS--If you'd like to see other problems I've had in 20,000 miles, check either KBB.com or Edmunds.com and look for a review, "Making Lemonade With This Lexus Lemon."
Here is a link: https://www.edmunds.com/lexus/rx-450h/2016/consumer-reviews/pg-1/?sorting=REVERSE_OVERALL_RATINGS