Subaru Ascent Touring 9 months old. The nav system has opened with a fully white screen probably about 10 times during the past 9 months. It was never convenient to drive it immediately to the dealer and it then fixed itself after repeated power ups. It finally failed today with my wife driving and she was able to take it immediately to the dealer. They looked at it and said it's a common problem. Not sure if they meant an Ascent problem, a 2019 problem, or a general Subaru problem. They performed a software upgrade that failed and ordered a new Harmon Kardon head unit. I'll take it in for replacement when it arrives. Luckily all under warranty. I can't imagine the cost if this happened after the new car warranty expired.