Warnings problems of the 2016 Subaru Outback

My 2016 Subaru Outback has gone through 5 batteries since purchase in 4/2016. The reason for my contact with you is that the navigation function “eyesight” has been problematic for at least two years and began with the third of five batteries. The function stops working randomly at any hour of the day and in all conditions. This year it went off and on in excess of 300-400 times. Each time it stops, cruise control, lane warnings, etc. Are off. This can be harrowing with highway driving. On the three occasions I took it to the dealer the past two years they could not find a cause. After I replaced the battery again recently, they reset a dcm whose warranty had been extended by Subaru and that I brought in myself. There have been a number of parasitic drain tests, some finding a drain, others not on the batteries when the car was returned to me, the navigation system went off only once that same day but I presume it will go off in the future. I do not find the car or system reliable. The problem appears to be exceedingly hard to diagnose. Since these are the types of systems used with automatic and self driving car functions, I thought it important that you be made aware of the hazards these systems present.

I own a 2016 Subaru Outback. While driving approximately 40:mph on a local main road (CT rte 10) the eyesight pre-collision brake assist suddenly activated and caused the vehicle to completely stop. The brakes then released and I was able to continue driving. This is the second incident with in a month that this has happened. The approximate failure mileage was 104,000 there were no prior warning lights or engine lights on. The vehicle has not been inspected by the dealer. This sudden stopping can cause an accident.