Automatic Transmission Control Module problems of the 2017 Infiniti QX60

A mechanic says it is pcm failure. I have owned the car for 18 months. Shortly after buying it, it started doing this thing where it loses power for just a second or two. Cruise control and proximity sensors kick off, steering wheel locks and/or power steering turns off, all interior components turn off. Usually everything comes right back on, and I can reset the cruise control. Lately it has been more frequent, and things don't go back to normal. It sometimes causes the vehicle to stall and not start as well. Today even once things are back "on", I can't control the ac fan, radio volume, etc. Bluetooth shows connected to the car on my phone but isn't playing through the vehicle speakers. I don't undersrand how this could not be a recall when it poses a major safety risk to suddenly lose power and be unable to steer the vehicle! this has been happening since Feb 2024, so I'll just put the original date. Sometimes it happens 15 times in a day and the vehicle is more or less not drivable. Other times I'll go a month or so with no glitches.