Sharkyy

So I own a RC 300 F Sport and I was doing a little drive this morning (6:30-7:30 am - currently 8:35 am)

During my drive, the entire dashboard, navigation screen, music, phone charging, exterior and interior lights, and ac shut off without reason. About 3-5 seconds later they all turned back on, but they started booting up like they do when you first start the car, not like the screens just turning back on. As far as I could tell the engine stayed on, power steering, and power braking. When it came back on every single light on the dash was lit, just like it does when you start the car. After this happened everything was fine for about 30 minutes, but then it happened again. As I was around the corner from my house, again everything except the engine shut off, when it came back on, the dash made a chime like it does when you start the car. There was only one chime and a message appeared on the dash "Steering power low, visit your dealer". Then it went away, I checked the messages and vehicle alert history, nothing in either. This hasn't caused me any issues yet, but I would like to get it resolved before it evolves into something more serious, like the engine, steering, or brakes (or maybe all) cutting out.

AeroEdd

I'd start by getting that battery tested if I were you.
Hopefully that's all it is and not the alternator too.
Fingers crossed for ya!

Giangsturh

I'd up on this too. Check your battery terminal connectors to see if it's tight and not loose. Check for corrosion as well.