When I started my Hyperscreen equipped EQS580 today, the driver's instrument cluster screen remained blank, totally off, black. Restarted several times with no effect. I drove to my destination about 5 miles away and called Mercedes me assistance. The young lady who dealt with me listened attentively and then said she would run some remote diagnostics on the car and put me on hold. Six minutes later, she returned and told me I would have to visit my dealer. This did not thrill me since I am waiting already for the software patch that Mercedes sent a letter about several weeks ago and the earliest they could see me was December 27! We ended the call and I did my shopping. When I returned to the car and restarted, all was back to normal! Anyone else encounter this? Is there a procedure with the EQS to reboot the car that is comparable to the procedure I would use on my 2014 Tesla Model S?